/* ====================================
   DomusFlow Configurator - Professional UI
   Design Philosophy: Technical Precision + Minimalism
   ==================================== */

:root {
    /* Color Palette - Monochromatic + Accent */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #fdfdfe;
    --color-bg-elevated: #ffffff;
    --color-bg-hover: #f5f7fa;

    --color-text-primary: #0f172a;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;

    --color-border-light: #e2e8f0;
    --color-border-medium: #cbd5e1;
    --color-border-strong: #94a3b8;

    --color-accent-primary: #0ea5e9;
    --color-accent-hover: #0284c7;
    --color-accent-light: rgba(14, 165, 233, 0.08);

    --color-blue: #3b82f6;
    --color-amber: #f59e0b;
    --color-green: #10b981;
    --color-purple: #8b5cf6;

    --color-status-complete: #10b981;
    --color-status-pending: #f59e0b;

    /* Shadows - Subtle Depth (refined for crispness) */
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.04), 0 1px 3px 0 rgba(15, 23, 42, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.10), 0 4px 6px -2px rgba(15, 23, 42, 0.05);
    --shadow-hover: 0 8px 12px -2px rgba(15, 23, 42, 0.12), 0 4px 8px -2px rgba(15, 23, 42, 0.06);

    /* Spacing System - 4px base grid */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */

    /* Typography - Refined scale with proper line heights */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --font-size-2xs: 0.6875rem;  /* 11px */
    --font-size-xs: 0.75rem;     /* 12px */
    --font-size-sm: 0.875rem;    /* 14px */
    --font-size-base: 1rem;      /* 16px */
    --font-size-lg: 1.125rem;    /* 18px */
    --font-size-xl: 1.25rem;     /* 20px */
    --font-size-2xl: 1.5rem;     /* 24px */
    --font-size-3xl: 1.875rem;   /* 30px */

    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Border Radius System */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 10px;
    --radius-xl: 12px;
    --radius-full: 9999px;

    /* Layout - Based on spacing multiples */
    --sidebar-width: 256px;      /* Slightly wider for better proportion */
    --header-height: 72px;       /* 18 * 4px grid */

    /* Component Sizes - Consistent touch targets */
    --button-height: 40px;       /* 10 * 4px */
    --button-height-sm: 32px;    /* 8 * 4px */
    --input-height: 40px;
    --icon-button-size: 36px;    /* 9 * 4px */
}

/* ====================================
   Base Styles
   ==================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    line-height: var(--line-height-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'tnum' 1, 'cv11' 1;  /* Tabular numbers + better single-story 'a' */
}

/* ====================================
   Layout Structure
   ==================================== */

/* Top Navigation Bar */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 48px;
    padding: 0 var(--space-6);
    background: var(--color-bg-primary);
}

.top-nav-left,
.top-nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.top-nav-logo {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-decoration: none;
}

.top-nav-logo:hover {
    color: var(--color-accent-primary);
}

.top-nav-separator {
    color: var(--color-text-muted);
    margin: 0 var(--space-2);
}

.top-nav-project {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.top-nav-item {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all 0.15s ease;
}

.top-nav-item:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-hover);
}

.main-content {
    min-height: calc(100vh - 48px);
}

/* ====================================
   Sidebar Components
   ==================================== */

.sidebar-header {
    padding: var(--space-6) var(--space-6);
    /* border removed - whitespace separates */
    min-height: var(--header-height);
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-blue));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    letter-spacing: -0.03em;
    flex-shrink: 0;
}

.logo-text {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
    letter-spacing: -0.025em;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-4) 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-6);
    margin: 0 var(--space-3);
    min-height: 44px;  /* Proper touch target */
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-snug);
    border-radius: var(--radius-md);
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: calc(var(--space-3) * -1);
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--color-accent-primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    transition: height 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-item:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.nav-item.active {
    color: var(--color-accent-primary);
    background: var(--color-accent-light);
    font-weight: var(--font-weight-semibold);
}

.nav-item.active::before {
    height: 20px;  /* Optically balanced */
}

.nav-icon {
    width: 20px;
    height: 20px;
    stroke-width: 2;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: var(--space-4) var(--space-6);
    /* border removed - positioned at bottom, clear without line */
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: auto;  /* Pushes to bottom */
}

.btn-icon {
    width: var(--icon-button-size);
    height: var(--icon-button-size);
    border: 1px solid var(--color-border-light);
    background: transparent;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-icon:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-medium);
}

.btn-icon:active {
    transform: scale(0.98);
}

.btn-icon svg {
    width: 18px;
    height: 18px;
    color: var(--color-text-secondary);
}

/* ====================================
   Header
   ==================================== */

.content-header {
    min-height: 56px;  /* Reduced from 72px since no title */
    padding: var(--space-4) var(--space-8);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.92);
    /* Subtle shadow instead of border - more premium */
    box-shadow: 0 1px 0 0 rgba(15, 23, 42, 0.04);
}

.header-left {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    justify-content: center;
}

.project-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-tight);
}

.breadcrumb-item {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
}

.breadcrumb-item.muted {
    color: var(--color-text-muted);
    font-weight: var(--font-weight-normal);
}

.breadcrumb-separator {
    color: var(--color-text-muted);
    user-select: none;
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    letter-spacing: -0.025em;
    color: var(--color-text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.save-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-status-complete);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    padding: var(--space-2) var(--space-3);
    background: rgba(16, 185, 129, 0.06);
    border-radius: var(--radius-md);
}

.status-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* ====================================
   Buttons
   ==================================== */

.btn {
    padding: 0 var(--space-5);
    height: var(--button-height);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    cursor: pointer;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    white-space: nowrap;
    user-select: none;
}

.btn-primary {
    background: var(--color-accent-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-medium);
    color: var(--color-text-primary);
}

.btn-secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-strong);
}

.btn-secondary:active {
    background: var(--color-bg-primary);
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--color-accent-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    height: auto;
}

.btn-text:hover {
    color: var(--color-accent-hover);
    background: var(--color-accent-light);
}

/* ====================================
   Content Body
   ==================================== */

.content-body {
    padding: var(--space-8);
    max-width: 1800px;
}

/* ====================================
   Cards
   ==================================== */

.card {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-xl);
    /* Border removed - shadow-only for modern, elevated feel */
    box-shadow: 0 1px 3px 0 rgba(15, 23, 42, 0.06),
                0 1px 2px 0 rgba(15, 23, 42, 0.04);
    margin-bottom: var(--space-6);
}

.card-header {
    padding: var(--space-8) var(--space-8) var(--space-6) var(--space-8);
    /* No border, no background - pure typography + spacing */
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 60px;
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    letter-spacing: -0.015em;
    color: var(--color-text-primary);
}

.card-body {
    padding: 0 var(--space-8) var(--space-8) var(--space-8);
    /* Top padding handled by card-header bottom padding */
}

/* ====================================
   Info Grid
   ==================================== */

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8) var(--space-6);
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.info-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    line-height: var(--line-height-tight);
    color: var(--color-text-muted);
}

.info-value {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-snug);
    color: var(--color-text-primary);
}

/* ====================================
   Summary Cards
   ==================================== */

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-5);
    margin-bottom: var(--space-8);
}

.summary-card {
    background: var(--color-bg-elevated);
    /* Border removed - shadow-only, cleaner */
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    display: flex;
    gap: var(--space-4);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    min-height: 112px;
    /* Slightly stronger base shadow since no border */
    box-shadow: 0 1px 3px 0 rgba(15, 23, 42, 0.08),
                0 1px 2px 0 rgba(15, 23, 42, 0.04);
}

.summary-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    /* No border color change needed */
}

.summary-card:active {
    transform: translateY(0);
}

.summary-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.summary-icon svg {
    width: 24px;
    height: 24px;
    stroke-width: 2;
}

.summary-icon.blue {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-blue);
}

.summary-icon.amber {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-amber);
}

.summary-icon.green {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-green);
}

.summary-icon.purple {
    background: rgba(139, 92, 246, 0.1);
    color: var(--color-purple);
}

.summary-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-1);
}

.summary-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text-secondary);
}

.summary-value {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
}

.summary-detail {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-tight);
    color: var(--color-text-muted);
}

/* Ultra-minimal status indicator */
.summary-status-dot {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    font-size: 11px;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.01em;
    /* Just colored text, no background, no decoration */
}

.summary-status-dot.complete {
    color: var(--color-status-complete);
}

.summary-status-dot.pending {
    color: var(--color-text-muted);
}

/* ====================================
   Action Grid
   ==================================== */

.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}

.action-card {
    background: transparent;
    border: 1.5px dashed var(--color-border-medium);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    min-height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    text-align: center;
}

.action-card:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-primary);
    border-style: solid;
    color: var(--color-accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.action-card:active {
    transform: translateY(0);
}

.action-icon {
    width: 32px;
    height: 32px;
    stroke-width: 1.5;
    flex-shrink: 0;
}

/* ====================================
   Utilities
   ==================================== */

.muted {
    color: var(--color-text-muted);
}

/* ====================================
   Responsive Design
   ==================================== */

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .content-header {
        height: auto;
        min-height: var(--header-height);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
        padding: var(--space-6);
    }

    .header-right {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: var(--space-3);
    }

    .content-body {
        padding: var(--space-6);
    }

    .card-header {
        padding: var(--space-6) var(--space-6) var(--space-5) var(--space-6);
    }

    .card-body {
        padding: 0 var(--space-6) var(--space-6) var(--space-6);
    }

    .info-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .summary-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .action-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
}

/* ====================================
   Devices View Styles
   ==================================== */

/* View Management */
.view {
    display: none;
}

.view.active {
    display: block;
}

/* Two Column Layout */
.devices-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
}

.devices-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.column-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

/* Device List */
.device-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    min-height: 200px;
}

/* Room Section Grouping */
.room-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.room-section-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0;
    padding-bottom: var(--space-2);
}

.room-devices,
.room-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.device-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.device-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.device-icon {
    font-size: var(--font-size-2xl);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.device-info {
    flex: 1;
}

.device-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.device-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Button Panels */
.button-panel-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    min-height: 200px;
}

.button-panel-card {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--space-5);
    transition: all 0.2s ease;
}

.button-panel-card:hover {
    box-shadow: var(--shadow-md);
}

.panel-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
}

.panel-title {
    flex: 1;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.panel-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.panel-slots {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.slot-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.slot-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    min-width: 60px;
}

.slot-label-group {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-width: 140px;
}

.slot-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--color-accent-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    flex-shrink: 0;
}

.slot-button-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    font-style: italic;
}

.slot-select {
    flex: 1;
    height: 36px;
    padding: 0 var(--space-3);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: var(--color-bg-hover);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.slot-select:hover {
    border-color: var(--color-border-medium);
}

.slot-select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

/* Empty State */
.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    padding: var(--space-8);
    text-align: center;
}

.empty-state p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* Add Buttons */
.btn-add {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 var(--space-5);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-accent-primary);
    background: transparent;
    border: 2px dashed var(--color-border-medium);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-add:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-primary);
    border-style: solid;
}

/* Icon Buttons Small */
.btn-icon-small {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-icon-small:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.btn-icon-small svg {
    width: 16px;
    height: 16px;
}

/* Header Actions */
.header-actions {
    display: flex;
    gap: var(--space-3);
}

/* Responsive */
@media (max-width: 1024px) {
    .devices-layout {
        grid-template-columns: 1fr;
    }
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideUp 0.2s ease;
}

.modal-large {
    max-width: 640px;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border-light);
}

.modal-header h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: 0;
}

.modal-form {
    padding: var(--space-6);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.form-group input[type="text"],
.form-group select {
    width: 100%;
    height: var(--input-height);
    padding: 0 var(--space-4);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.form-group input[type="text"]:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-hint {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    margin-top: var(--space-2);
    font-style: italic;
}

.form-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-5);
    line-height: 1.5;
}

/* Form section divider */
.form-section-divider {
    height: 1px;
    background: var(--color-border-light);
    margin: var(--space-6) 0 var(--space-5) 0;
}

/* Optional fields - subtle de-emphasis */
.form-group-optional {
    opacity: 0.7;
}

.form-group-optional label {
    font-weight: 400;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

.modal-actions {
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

/* Dynamic Modal Styles */
.modal-body {
    padding: var(--space-6);
}

.modal-footer {
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--color-border-light);
    background: var(--color-bg-secondary);
}

.modal-form-section {
    margin-top: var(--space-5);
}

.modal-form-section:first-child {
    margin-top: 0;
}

.modal-form-section-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
}

.modal-form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.modal-form-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.modal-form-field label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.modal-form-input-group {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.modal-form-input-group input {
    width: 80px;
    height: var(--input-height);
    padding: 0 var(--space-3);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
}

.modal-form-input-group input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

.modal-form-input-unit {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.modal-form-radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.modal-form-radio {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.1s ease;
}

.modal-form-radio:hover {
    background: var(--color-bg-hover);
}

.modal-form-radio input[type="radio"] {
    margin: 0;
}

.button-label-input {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.button-label-input .slot-number {
    flex-shrink: 0;
}

.button-label-input input {
    flex: 1;
    height: 36px;
    padding: 0 var(--space-3);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.button-label-input input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

/* ====================================
   Modern Form Styles
   ==================================== */

.modal-form-modern {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* Form Sections - Visual Grouping */
.form-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    padding: 0;
}

.form-section-secondary {
    padding-top: var(--space-6);
    margin-top: var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

/* Form Row - Side-by-side Layout */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-4);
}

/* Modern Form Groups */
.form-group-modern {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label-modern {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
    letter-spacing: -0.01em;
}

.form-label-optional {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-normal);
}

.form-input-modern {
    height: var(--input-height);
    padding: 0 var(--space-4);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
}

.form-input-modern::placeholder {
    color: var(--color-text-muted);
    font-weight: var(--font-weight-normal);
}

.form-input-modern:hover {
    border-color: var(--color-border-medium);
}

.form-input-modern:focus {
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-light);
    background: white;
}

.form-input-modern:disabled {
    background: var(--color-bg-primary);
    color: var(--color-text-muted);
    cursor: not-allowed;
}

/* Modern Select Styling */
select.form-input-modern {
    cursor: pointer;
}

/* Modern Modal Actions */
.modal-actions-modern {
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

/* Modern Buttons */
.btn-modern {
    height: var(--button-height);
    padding: 0 var(--space-6);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    letter-spacing: -0.01em;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    white-space: nowrap;
    user-select: none;
    outline: none;
}

.btn-modern-primary {
    background: var(--color-accent-primary);
    color: white;
    box-shadow: 0 1px 2px 0 rgba(14, 165, 233, 0.1);
}

.btn-modern-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px -2px rgba(14, 165, 233, 0.2),
                0 2px 4px -2px rgba(14, 165, 233, 0.12);
}

.btn-modern-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px 0 rgba(14, 165, 233, 0.1);
}

.btn-modern-primary:focus-visible {
    box-shadow: 0 0 0 3px var(--color-accent-light),
                0 1px 2px 0 rgba(14, 165, 233, 0.1);
}

.btn-modern-secondary {
    background: white;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-medium);
    box-shadow: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
}

.btn-modern-secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-strong);
}

.btn-modern-secondary:active {
    background: var(--color-bg-primary);
}

.btn-modern-secondary:focus-visible {
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-light),
                0 1px 2px 0 rgba(15, 23, 42, 0.04);
}

/* Responsive Form Adjustments */
@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .modal-actions-modern {
        flex-direction: column-reverse;
    }

    .btn-modern {
        width: 100%;
    }
}

/* ====================================
   Structure/Floorplan View Styles
   ==================================== */

#structure-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.structure-floor-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    box-shadow: var(--shadow-sm);
    transition: all 0.15s ease;
}

.structure-floor-card:hover {
    box-shadow: var(--shadow-md);
}

.structure-floor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.structure-floor-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.structure-floor-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
}

.structure-rooms-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.structure-room-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-hover);
    border-radius: var(--radius-sm);
    transition: all 0.15s ease;
}

.structure-room-item:hover {
    background: var(--color-bg-primary);
}

.structure-room-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.structure-empty-rooms {
    padding: var(--space-3);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    font-style: italic;
    grid-column: 1 / -1;
}

.btn-add-room {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-1) var(--space-2);
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-accent-primary);
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s ease;
}

.btn-add-room:hover {
    background: var(--color-accent-light);
}

/* ====================================
   Devices View - Master/Detail Layout
   ==================================== */

.devices-master-detail {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 0;
    min-height: calc(100vh - 180px);
    margin: calc(var(--space-8) * -1);
    margin-top: calc(var(--space-8) * -1);
}

/* Left Panel - Structure Tree */
.devices-tree-panel {
    background: var(--color-bg-primary);
    border-right: 1px solid var(--color-border-light);
    overflow-y: auto;
}

/* Unit selector in House tab */
.unit-selector-wrapper {
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border-light);
}

.unit-selector-dropdown {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    cursor: pointer;
}

.unit-selector-dropdown:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.tree-panel-header {
    padding: var(--space-4) var(--space-4);
    position: sticky;
    top: 0;
    background: var(--color-bg-secondary);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.tree-panel-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.btn-tree-add-labeled {
    padding: var(--space-1) var(--space-2);
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-accent-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: background 0.15s ease;
    white-space: nowrap;
}

.btn-tree-add-labeled:hover {
    background: var(--color-accent-light);
}

/* Inline room input */
.tree-room-input-wrapper {
    padding: var(--space-1) var(--space-3) var(--space-1) var(--space-5);
}

.tree-room-input {
    width: 100%;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-accent-primary);
    border-radius: var(--radius-sm);
    outline: none;
}

.tree-room-input::placeholder {
    color: var(--color-text-muted);
}

.tree-floor-input-wrapper {
    padding: var(--space-2) var(--space-3);
}

.tree-floor-input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-accent-primary);
    border-radius: var(--radius-sm);
    outline: none;
}

.tree-floor-input::placeholder {
    color: var(--color-text-muted);
    font-weight: var(--font-weight-normal);
}

/* Generic inline edit input */
.inline-edit-input {
    font-size: inherit;
    font-family: inherit;
    font-weight: inherit;
    padding: 2px 6px;
    border: 1px solid var(--color-accent-primary);
    border-radius: var(--radius-sm);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    outline: none;
    min-width: 100px;
}

.devices-tree {
    padding: 0 var(--space-4) var(--space-4);
}

/* Tree Floor Group */
.tree-floor {
    margin-bottom: var(--space-3);
}

.tree-floor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) 0;
}

.tree-floor-label-group {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.tree-floor-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.tree-floor-entities {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-2xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    outline: none;
    margin-left: var(--space-2);
}

.tree-floor-entities:hover {
    border-color: var(--color-border-medium);
}

.tree-floor-entities:focus {
    border-color: var(--color-accent-primary);
}

.btn-tree-action {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all 0.1s ease;
}

.tree-floor-label-group .btn-tree-action {
    opacity: 0;
}

.tree-floor-label-group:hover .btn-tree-action {
    opacity: 1;
}

.tree-room-label-group {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    min-width: 0;
}

.btn-tree-action:hover {
    background: var(--color-bg-hover);
    color: var(--color-accent-primary);
}

.btn-tree-delete:hover {
    color: #ef4444;
}

.tree-empty-rooms {
    padding: var(--space-2) var(--space-5);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-style: italic;
}


.tree-rooms {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.tree-room-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3) var(--space-2) var(--space-5);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.1s ease;
}

.tree-room-item:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.tree-room-item.active {
    background: var(--color-accent-light);
    color: var(--color-accent-primary);
    font-weight: var(--font-weight-medium);
}

.tree-room-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.tree-room-actions {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    opacity: 0;
    transition: opacity 0.1s ease;
}

.tree-room-item:hover .tree-room-actions {
    opacity: 1;
}

.tree-room-count {
    font-size: var(--font-size-2xs);
    color: var(--color-text-muted);
    background: var(--color-bg-primary);
    padding: 2px 6px;
    border-radius: var(--radius-full);
}

.tree-room-item.active .tree-room-count {
    background: rgba(14, 165, 233, 0.15);
    color: var(--color-accent-primary);
}

/* Right Panel - Room Content */
.devices-content-panel {
    padding: var(--space-8) var(--space-10);
    overflow-y: auto;
    background: var(--color-bg-primary);
}

#devices-room-content {
    width: 100%;
}

/* Room Header */
.room-content-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
}

.room-content-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.room-content-floor {
    font-weight: var(--font-weight-normal);
    color: var(--color-text-muted);
}

.room-area-field {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.room-area-input {
    width: 80px;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    text-align: right;
    outline: none;
}

.room-area-input:hover {
    border-color: var(--color-border-medium);
}

.room-area-input:focus {
    border-color: var(--color-accent-primary);
}

.room-area-unit {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    outline: none;
}

.room-area-unit:hover {
    border-color: var(--color-border-medium);
}

.room-area-unit:focus {
    border-color: var(--color-accent-primary);
}

.room-area-unit-label {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

/* Two Column Layout */
.room-two-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
}

.room-column-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.room-column-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.room-column-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.room-column-empty {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding: var(--space-4);
    text-align: center;
    background: var(--color-bg-hover);
    border-radius: var(--radius-sm);
}

/* Panel Items */
.panel-item {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.panel-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
}

.panel-item-info {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.panel-item-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.panel-item-type {
    font-size: var(--font-size-xs);
    color: #475569;
}

.panel-slots {
    display: flex;
    flex-direction: column;
    padding-bottom: var(--space-2);
}

.panel-slot {
    display: grid;
    grid-template-columns: 24px 1fr;
    gap: var(--space-3);
    align-items: center;
    padding: var(--space-1) var(--space-4);
}

.panel-slot-num {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    text-align: center;
}

.panel-slot-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.panel-slot-select {
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--space-2) var(--space-8) var(--space-2) var(--space-3);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    color: #334155;
    width: 100%;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
}

/* Inline Editable Panel Inputs */
.panel-name-input {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: var(--space-1) var(--space-2);
    margin: calc(var(--space-1) * -1) calc(var(--space-2) * -1);
    outline: none;
    transition: all 0.15s ease;
    min-width: 80px;
    width: auto;
}

.panel-name-input:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-light);
}

.panel-name-input:focus {
    background: var(--color-bg-secondary);
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 2px var(--color-accent-light);
}

.panel-slot-label-input {
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: var(--space-1) var(--space-2);
    margin: calc(var(--space-1) * -1) calc(var(--space-2) * -1);
    outline: none;
    transition: all 0.15s ease;
    min-width: 60px;
    width: 100%;
    max-width: 100%;
}

.panel-slot-label-input:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-light);
}

.panel-slot-label-input:focus {
    background: var(--color-bg-secondary);
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 2px var(--color-accent-light);
}

/* Device Name Input */
.device-name-input {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: var(--space-1) var(--space-2);
    margin: calc(var(--space-1) * -1) calc(var(--space-2) * -1);
    outline: none;
    transition: all 0.15s ease;
    width: 100%;
}

.device-name-input:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-light);
}

.device-name-input:focus {
    background: var(--color-bg-secondary);
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 2px var(--color-accent-light);
}

/* Drag and Drop */
.device-drag-handle {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab;
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: all 0.15s ease;
}

.device-drag-handle:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-secondary);
}

.device-drag-handle:active {
    cursor: grabbing;
}

.device-drag-handle svg {
    width: 16px;
    height: 16px;
}

.device-drag-handle.dragging {
    opacity: 0.5;
}

.device-item.dragging {
    opacity: 0.5;
}

.panel-slot.drop-target {
    background: var(--color-bg-hover);
    border-radius: var(--radius-sm);
}

.panel-slot.drop-hover {
    background: var(--color-accent-light);
    outline: 2px dashed var(--color-accent-primary);
    outline-offset: -2px;
    border-radius: var(--radius-sm);
}

/* Panel Type Dropdown */
.panel-type-dropdown {
    position: fixed;
    z-index: 10000;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    padding: var(--space-1);
    animation: dropdownFadeIn 0.1s ease;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.panel-type-dropdown-item {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background 0.1s ease;
}

.panel-type-dropdown-item:hover {
    background: var(--color-accent-light);
    color: var(--color-accent-primary);
}

/* Output Items */
.device-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.device-item-icon {
    font-size: var(--font-size-base);
}

.device-item-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.device-item-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.device-item-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.device-item-connections {
    font-size: var(--font-size-xs);
    color: var(--color-accent-primary);
    margin-left: auto;
    white-space: nowrap;
}

.btn-icon-tiny {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    opacity: 0;
    transition: opacity 0.1s ease;
}

.panel-item-header:hover .btn-icon-tiny,
.device-item:hover .btn-icon-tiny {
    opacity: 1;
}

.btn-icon-tiny:hover {
    color: #ef4444;
}

.btn-section-add {
    padding: var(--space-1) var(--space-2);
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-accent-primary);
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s ease;
}

.btn-section-add:hover {
    background: var(--color-accent-light);
}

/* Device List in Room */
.room-devices-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.room-device-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    transition: all 0.1s ease;
}

.room-device-item:hover {
    background: var(--color-bg-hover);
}

.room-device-icon {
    font-size: var(--font-size-lg);
    width: 32px;
    text-align: center;
}

.room-device-info {
    flex: 1;
    min-width: 0;
}

.room-device-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.room-device-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Empty state in room */
.room-empty-state {
    padding: var(--space-6);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* Responsive */
@media (max-width: 768px) {
    .devices-master-detail {
        grid-template-columns: 1fr;
    }

    .devices-tree-panel {
        display: none;
    }
}

/* ====================================
   Legacy Devices View (keeping for compatibility)
   ==================================== */

#devices-structure-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.devices-floor-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    background: var(--color-bg-secondary);
    padding: var(--space-5);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.devices-floor-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0;
}

.devices-rooms-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.devices-room-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    width: 100%;
    position: relative;
}

.devices-room-header {
    padding: var(--space-4) var(--space-5);
    background: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    transition: background-color 0.15s ease;
    position: relative;
}

.devices-room-header:hover {
    background: var(--color-bg-hover);
}

.devices-room-header-content {
    flex: 1;
    min-width: 0;
}

.devices-room-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
    transition: color 0.2s ease;
}

.devices-room-header:hover .devices-room-title {
    color: var(--color-accent-primary);
}

.devices-room-counts {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-2);
}

.room-count-badge {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-normal);
    transition: all 0.2s ease;
}

.devices-room-card[data-collapsed="true"] .room-count-badge {
    background: var(--color-bg-hover);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-light);
}

.room-collapse-chevron {
    width: 20px;
    height: 20px;
    color: var(--color-text-muted);
    transition: transform 0.2s ease, color 0.2s ease;
    flex-shrink: 0;
}

.devices-room-card[data-collapsed="false"] .room-collapse-chevron {
    transform: rotate(90deg);
    color: var(--color-accent-primary);
}

.devices-room-header:hover .room-collapse-chevron {
    color: var(--color-accent-primary);
}

.devices-room-content {
    padding: 0 var(--space-5) var(--space-4) var(--space-5);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    overflow: hidden;
    transition: max-height 0.2s ease, opacity 0.2s ease;
    max-height: 2000px;
    opacity: 1;
}

.devices-room-card[data-collapsed="true"] .devices-room-content {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
}

.devices-room-card[data-collapsed="true"] .devices-room-header {
    border-bottom: none;
}

.devices-room-card[data-collapsed="true"] {
    box-shadow: var(--shadow-sm);
}

.devices-room-empty {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    padding: var(--space-4) 0;
    grid-column: 1 / -1;
    text-align: center;
}

.devices-room-devices-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.devices-room-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.devices-room-empty-column {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    padding: var(--space-4) 0;
}

.device-item-compact {
    display: grid;
    grid-template-columns: 24px 1fr auto;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.device-item-compact:last-child {
    border-bottom: none;
}

.device-icon-small {
    font-size: var(--font-size-base);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
}

.device-info-compact {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
}

.device-name-compact {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.device-meta-compact {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
}

.btn-icon-tiny {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: color 0.15s ease;
}

.btn-icon-tiny:hover {
    color: var(--color-text-primary);
}

.btn-icon-tiny svg {
    width: 14px;
    height: 14px;
}

/* Button Panel Section */
.devices-room-panels-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.panel-section-header {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding-top: var(--space-4);
}

.panel-detail-card {
    background: var(--color-bg-hover);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.panel-detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background: white;
    border-bottom: 1px solid var(--color-border-light);
}

.panel-detail-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.panel-detail-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.panel-detail-type {
    font-size: var(--font-size-xs);
    color: #475569;
}

.panel-slot-mapping {
    display: flex;
    flex-direction: column;
}

.slot-mapping-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
}

.slot-mapping-row:last-child {
    border-bottom: none;
}

.slot-mapping-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.slot-mapping-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--color-border-light);
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.slot-mapping-text {
    font-size: var(--font-size-sm);
    color: #334155;
    font-weight: 500;
}

.slot-mapping-select {
    height: 32px;
    padding: 0 var(--space-3);
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    color: var(--color-text-primary);
    background: white;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
}

.slot-mapping-select:hover {
    border-color: var(--color-border-medium);
}

.slot-mapping-select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

.devices-room-actions {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    transition: padding 0.2s ease;
}

.devices-room-card[data-collapsed="true"] .devices-room-actions {
    display: none;
}

.btn-room-add {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 32px;
    padding: 0 var(--space-3);
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    background: white;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-room-add:hover {
    color: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
}

.btn-room-add svg {
    width: 14px;
    height: 14px;
}


/* Responsive */
@media (max-width: 1024px) {
    .devices-room-content {
        grid-template-columns: 1fr;
    }

    .slot-mapping-row {
        grid-template-columns: 120px 1fr;
    }
}

@media (max-width: 768px) {
    .slot-mapping-row {
        grid-template-columns: 1fr;
        gap: var(--space-2);
    }
}

/* ====================================
   Energy Systems Form
   ==================================== */

.energy-form {
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

/* ====================================
   Hardware View
   ==================================== */

.hardware-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-6);
}

.hardware-layout-full {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

/* Board Tree Items */
.tree-board-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.1s ease;
}

.tree-board-item:hover {
    background: var(--color-bg-hover);
}

.tree-board-item.active {
    background: rgba(14, 165, 233, 0.15);
}

.tree-board-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    flex: 1;
}

.tree-board-item.active .tree-board-name {
    color: var(--color-accent-primary);
}

.tree-board-item .btn-tree-delete {
    opacity: 0;
    transition: opacity 0.1s ease;
}

.tree-board-item:hover .btn-tree-delete {
    opacity: 1;
}

/* Board inline input */
.tree-board-input-wrapper {
    cursor: default;
}

.tree-board-input {
    width: 100%;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    border: 1px solid var(--color-accent-primary);
    border-radius: var(--radius-sm);
    outline: none;
    background: var(--color-bg-secondary);
}

.hardware-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.hardware-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hardware-section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.hardware-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.hardware-item {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.hardware-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
}

.hardware-item-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hardware-item-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.hardware-item-type {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.hardware-item-channels {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    background: var(--color-bg-hover);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

.hardware-channels {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--color-border-light);
}

.hardware-channel {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    background: var(--color-bg-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hardware-channel.used {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.hardware-item-simple {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.hardware-item-simple .hardware-item-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.hardware-item-simple .hardware-item-type {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Hardware inline editing */
.hardware-name-input {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    border: none;
    background: transparent;
    padding: 0;
    margin: 0;
    outline: none;
    width: 100%;
    min-width: 0;
}

.board-name-input {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
    border: none;
    background: transparent;
    padding: 0;
    margin: 0;
    outline: none;
    width: auto;
    min-width: 0;
}

.hardware-name-input:focus {
    background: var(--color-bg-hover);
    padding: var(--space-1) var(--space-2);
    margin: calc(-1 * var(--space-1)) calc(-1 * var(--space-2));
    border-radius: var(--radius-sm);
}

.board-name-input:focus {
    background: var(--color-bg-hover);
    padding: var(--space-1) var(--space-2);
    margin: calc(-1 * var(--space-1)) calc(-1 * var(--space-2));
    border-radius: var(--radius-sm);
}

.hardware-item-header .btn-icon-tiny {
    opacity: 0;
    transition: opacity 0.1s ease;
}

.hardware-item:hover .hardware-item-header .btn-icon-tiny {
    opacity: 1;
}

.hardware-item-simple .btn-icon-tiny {
    opacity: 0;
    transition: opacity 0.1s ease;
}

.hardware-item-simple:hover .btn-icon-tiny {
    opacity: 1;
}

.hardware-channel {
    cursor: pointer;
    transition: background 0.1s ease;
}

.hardware-channel:hover {
    background: var(--color-bg-hover);
}

.hardware-empty {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding: var(--space-4);
    text-align: center;
}

/* Hardware Tab - New Flat Layout */
.hardware-content-panel {
    padding: var(--space-6);
    overflow-y: auto;
    height: 100%;
}

.hardware-page {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}


/* Flat Hardware Item (with icon) */
.hardware-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.hardware-item-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.hardware-item-icon svg {
    width: 20px;
    height: 20px;
}

.hardware-item-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hardware-item-channels {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    background: var(--color-bg-hover);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.hardware-item .config-item-actions {
    flex-shrink: 0;
}

.hardware-item:hover .config-item-actions {
    opacity: 1;
}

.hardware-totals {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--space-2) var(--space-4);
    margin-top: var(--space-2);
}

.hardware-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

/* Dropdown category headers */
.dropdown-category {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-hover);
    border-bottom: 1px solid var(--color-border-light);
}

.dropdown-category:not(:first-child) {
    border-top: 1px solid var(--color-border-light);
    margin-top: var(--space-1);
}

/* Channel Assignment Dropdown */
.channel-assign-dropdown {
    background: white;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    min-width: 200px;
}

.channel-dropdown-item {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: background 0.1s ease;
}

.channel-dropdown-item:hover {
    background: var(--color-bg-hover);
}

.channel-dropdown-item.selected {
    background: var(--color-accent-light);
    color: var(--color-accent-primary);
}

.channel-dropdown-item.channel-dropdown-clear {
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border-light);
}

.channel-dropdown-meta {
    font-size: var(--font-size-xs);
    color: #475569;
    margin-left: var(--space-2);
}

.channel-dropdown-empty {
    padding: var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
    font-style: italic;
}

/* Energy Items */
.energy-item {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: var(--space-3) var(--space-4);
}

.energy-item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.energy-item-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.energy-item-select {
    font-size: var(--font-size-sm);
    padding: var(--space-1) var(--space-2);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    background: var(--color-bg-primary);
    color: var(--color-text-secondary);
    min-width: 160px;
}

.energy-item-details {
    margin-top: var(--space-2);
    padding-top: var(--space-2);
    border-top: 1px solid var(--color-border-light);
}

.energy-item-detail {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Overview List */
.overview-list {
    display: flex;
    flex-direction: column;
}

.overview-row {
    display: flex;
    align-items: center;
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.overview-row:last-child {
    border-bottom: none;
}

.overview-name {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
}

.overview-qty {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    min-width: 50px;
    text-align: right;
}

.overview-price {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    min-width: 100px;
    text-align: right;
}

.overview-value {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.overview-row.overview-total {
    border-top: 1px solid var(--color-border);
    border-bottom: none;
    margin-top: var(--space-2);
    padding-top: var(--space-3);
}

.overview-row.overview-total .overview-name,
.overview-row.overview-total .overview-price {
    font-weight: var(--font-weight-semibold);
}

/* Export Buttons */
.export-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.btn-export {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-export:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.btn-export svg {
    flex-shrink: 0;
}

/* ====================================
   Legacy Energy View (unused)
   ==================================== */

.energy-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    background: var(--color-bg-secondary);
    padding: var(--space-5);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.energy-section-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
    margin: 0;
}

.energy-subsection {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding-left: var(--space-6);
    margin-top: var(--space-3);
    border-left: 2px solid var(--color-border-light);
}

.energy-form-actions {
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    padding-top: var(--space-6);
    margin-top: var(--space-4);
    border-top: 1px solid var(--color-border-light);
}

/* ====================================
   Price Table
   ==================================== */

.price-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.price-table th,
.price-table td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
}

.price-table th {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-border-medium);
}

.price-table th:nth-child(2),
.price-table th:nth-child(3),
.price-table th:nth-child(4),
.price-table td:nth-child(2),
.price-table td:nth-child(3),
.price-table td:nth-child(4) {
    text-align: right;
}

.price-table tbody tr {
    border-bottom: 1px solid var(--color-border-light);
}

.price-table tbody td {
    color: var(--color-text-primary);
}

.price-table tfoot td {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border-light);
}

.price-table tfoot .price-total td {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    border-top: 2px solid var(--color-border-medium);
}

/* ====================================
   Collapsible Sidebar
   ==================================== */

.sidebar {
    width: var(--sidebar-width);
    transition: width 0.2s ease, transform 0.2s ease;
}

.sidebar.collapsed {
    width: 64px;
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-item span {
    display: none;
}

.sidebar.collapsed .sidebar-header {
    padding: var(--space-4);
    justify-content: center;
}

.sidebar.collapsed .logo {
    justify-content: center;
}

.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: var(--space-3);
    margin: 0 var(--space-2);
}

.sidebar.collapsed .nav-icon {
    margin: 0;
}

.sidebar.collapsed .sidebar-footer {
    padding: var(--space-4);
    align-items: center;
}

.sidebar-toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
    flex-shrink: 0;
}

.sidebar-toggle:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.sidebar-toggle svg {
    width: 18px;
    height: 18px;
}

.sidebar.collapsed .sidebar-toggle {
    margin: 0 auto;
}

.sidebar:not(.collapsed) .sidebar-header {
    gap: var(--space-3);
}


/* ====================================
   Header with Tabs
   ==================================== */

.content-header {
    min-height: auto;
    padding: 0;
    flex-direction: column;
    align-items: stretch;
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--color-border-light);
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    min-height: 56px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-direction: row;
}

.project-title {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
}

.project-title h1 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
    line-height: var(--line-height-tight);
    margin: 0;
}

.project-separator {
    color: var(--color-text-muted);
}

.project-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-normal);
}

/* Project Section Tabs */
.project-tabs {
    display: flex;
    gap: 0;
    padding: 0 var(--space-6);
    border-bottom: 1px solid var(--color-border-light);
    background: transparent;
}

.tab-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-5);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.15s ease;
}

.tab-item:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-hover);
}

.tab-item.active {
    color: var(--color-accent-primary);
    border-bottom-color: var(--color-accent-primary);
    background: transparent;
}

.tab-icon {
    width: 18px;
    height: 18px;
    stroke-width: 2;
    flex-shrink: 0;
}

/* ====================================
   Responsive - Tabs
   ==================================== */

@media (max-width: 768px) {
    .top-nav {
        padding: 0 var(--space-4);
    }

    .project-tabs {
        padding: 0 var(--space-4);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-item {
        padding: var(--space-3) var(--space-4);
        white-space: nowrap;
    }

    .tab-item span {
        display: none;
    }

    .tab-icon {
        width: 20px;
        height: 20px;
    }
}


/* ====================================
   HVAC Tab Styles
   ==================================== */

.hvac-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    transition: border-color 0.15s ease;
}

.hvac-item:hover {
    border-color: var(--color-border-medium);
}

.hvac-item-main {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hvac-item-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.hvac-item-detail {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.hvac-item-rooms {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: 0 var(--space-4) var(--space-3) var(--space-4);
    margin-top: calc(-1 * var(--space-2));
}

.hvac-room-tag {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    background: var(--color-bg-primary);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-light);
}

.btn-add-small {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-accent-primary);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    transition: background-color 0.15s ease;
}

.btn-add-small:hover {
    background: var(--color-accent-light);
}

.btn-delete {
    opacity: 0.4;
    transition: opacity 0.15s ease;
}

.hvac-item:hover .btn-delete {
    opacity: 1;
}

.empty-state-small {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding: var(--space-4);
    text-align: center;
    background: var(--color-bg-primary);
    border: 1px dashed var(--color-border-light);
    border-radius: var(--radius-md);
}

/* HVAC Category Headers */
.hvac-category {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.hvac-category-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    
    
}

/* HVAC Add Buttons */
.hvac-add-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.btn-hvac-add {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
    border: 1px dashed var(--color-border-medium);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-hvac-add:hover {
    color: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    border-style: solid;
    background: var(--color-accent-light);
}

.hvac-items-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.hvac-items-list:empty {
    display: none;
}

/* HVAC Item with Icon */
.hvac-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    transition: border-color 0.15s ease;
}

.hvac-item:hover {
    border-color: var(--color-border-medium);
}

.hvac-item-icon {
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.hvac-item-main {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.hvac-item-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.hvac-item-detail {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* HVAC Inline Form */
.hvac-inline-form {
    padding: var(--space-3) var(--space-4);
    background: var(--color-accent-light);
    border: 1px solid var(--color-accent-primary);
    border-radius: var(--radius-md);
}

.hvac-form-row {
    display: flex;
    gap: var(--space-2);
    align-items: center;
    flex-wrap: wrap;
}

.hvac-form-select {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    min-width: 150px;
}

.hvac-form-select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.btn-hvac-save {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    color: white;
    background: var(--color-accent-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s ease;
}

.btn-hvac-save:hover {
    background: var(--color-accent-hover);
}

.btn-hvac-cancel {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text-secondary);
    background: transparent;
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-hvac-cancel:hover {
    background: var(--color-bg-hover);
}

/* HVAC Section */
.hvac-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

/* HVAC Item Row - minimal/professional */
.hvac-item-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) 0;
    padding-left: var(--space-6);
    font-size: var(--font-size-sm);
}

.hvac-item-text {
    color: var(--color-text-primary);
}

.hvac-item-text-muted {
    color: var(--color-text-muted);
}

.hvac-item-sep {
    color: var(--color-text-muted);
}

.hvac-item-remove {
    margin-left: auto;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--color-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.hvac-item-row:hover .hvac-item-remove {
    opacity: 1;
}

.hvac-item-remove:hover {
    color: var(--color-text-primary);
}

/* ====================================
   Config Panel - Professional Card Layout
   ==================================== */

.config-panel {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-6);
}

.config-panel-header {
    margin-bottom: var(--space-6);
}

.config-panel-body + .config-panel-header {
    margin-top: var(--space-12);
}

.config-panel-header h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.config-panel-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.config-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.config-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border-light);
}

.config-card-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.config-card-add {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    color: var(--color-accent-primary);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    transition: background 0.15s ease;
}

.config-card-add:hover {
    background: var(--color-accent-light);
}

.config-card-body {
    padding: 0;
}

.config-card-body:empty,
.config-card-body:has(.config-empty) {
    padding: var(--space-4);
}

.config-empty {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
}

.config-card-body:has(.config-select) {
    padding: var(--space-4);
}

.config-select {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: border-color 0.15s ease;
}

.config-select:hover {
    border-color: var(--color-border-medium);
}

.config-select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.config-field-row {
    display: flex;
    gap: var(--space-3);
}

.config-field-row .config-select {
    flex: 1;
}

.config-input {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    transition: border-color 0.15s ease;
}

.config-input:hover {
    border-color: var(--color-border-medium);
}

.config-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

/* Config List Items */
.config-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
    transition: background 0.1s ease;
}

.config-list-item:last-child {
    border-bottom: none;
}

.config-list-item:hover {
    background: var(--color-bg-hover);
}

.config-list-item-selected {
    background: var(--color-accent-bg);
    border-left: 3px solid var(--color-accent-primary);
}

.config-list-item-selected:hover {
    background: var(--color-accent-bg);
}

.config-list-item-content {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
}

.config-list-item-secondary {
    color: var(--color-text-muted);
}

.config-list-item-remove {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-1);
    line-height: 1;
    opacity: 0;
    transition: opacity 0.15s ease, color 0.15s ease;
}

.config-list-item:hover .config-list-item-remove {
    opacity: 1;
}

.config-list-item-remove:hover {
    color: var(--color-text-primary);
}

/* Config Inline Form */
.config-inline-form {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
}

.config-inline-form:last-child {
    border-bottom: none;
}

.config-form-select {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-sm);
}

.config-form-select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.config-form-input {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-sm);
}

.config-form-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.config-form-input::placeholder {
    color: var(--color-text-muted);
}

.config-form-btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
}

.config-form-btn-primary {
    color: white;
    background: var(--color-accent-primary);
    border: none;
}

.config-form-btn-primary:hover {
    background: var(--color-accent-hover);
}

.config-form-btn-cancel {
    color: var(--color-text-muted);
    background: none;
    border: none;
}

.config-form-btn-cancel:hover {
    color: var(--color-text-primary);
}

/* Floors Accordion (Project Tab) */
.floors-accordion {
    display: flex;
    flex-direction: column;
}

.accordion-floor {
    border-bottom: 1px solid var(--color-border-light);
}

.accordion-floor:last-child {
    border-bottom: none;
}

.accordion-floor-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    cursor: pointer;
    transition: background 0.1s ease;
}

.accordion-floor-header:hover {
    background: var(--color-bg-hover);
}

.accordion-chevron {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    transition: transform 0.15s ease;
    color: var(--color-text-muted);
}

.accordion-floor.expanded .accordion-chevron {
    transform: rotate(90deg);
}

.accordion-floor-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    flex: 1;
    color: var(--color-text-primary);
}

.accordion-floor-count {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.accordion-floor-actions {
    display: flex;
    gap: var(--space-1);
    opacity: 0;
    transition: opacity 0.1s ease;
}

.accordion-floor-header:hover .accordion-floor-actions {
    opacity: 1;
}

.accordion-floor-content {
    border-top: 1px solid var(--color-border-light);
    padding: var(--space-3) var(--space-4);
}

.accordion-rooms {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.accordion-room {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    margin-left: var(--space-4);
}

.accordion-room-name {
    font-size: var(--font-size-sm);
    flex: 1;
    color: var(--color-text-primary);
}

.accordion-room-area {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.accordion-room-actions {
    display: flex;
    gap: var(--space-1);
    opacity: 0;
    transition: opacity 0.1s ease;
}

.accordion-room:hover .accordion-room-actions {
    opacity: 1;
}

.accordion-add-room {
    margin-left: var(--space-4);
    margin-top: var(--space-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    color: var(--color-accent-primary);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
}

.accordion-add-room:hover {
    background: var(--color-accent-light);
}

.accordion-empty-rooms {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    padding: var(--space-2) var(--space-3);
    margin-left: var(--space-4);
}

.accordion-room-form {
    margin-left: var(--space-4);
    padding: var(--space-2) 0;
    border-bottom: none;
}

/* Building Type Cards (Project Tab) */
.building-type-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-8);  /* Extra spacing before Floors section */
}

/* Units Section (Project Tab - multi-unit mode) */
#units-section {
    margin-bottom: var(--space-6);  /* Spacing before Floors section */
}

.building-type-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6);
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: center;
}

.building-type-card:hover {
    border-color: var(--color-border-medium);
    background: var(--color-bg-hover);
}

.building-type-card.selected {
    border-color: var(--color-accent-primary);
    background: var(--color-accent-light);
}

.building-type-card-icon {
    width: 48px;
    height: 48px;
    color: var(--color-text-secondary);
}

.building-type-card.selected .building-type-card-icon {
    color: var(--color-accent-primary);
}

.building-type-card-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.building-type-card-desc {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Unit count input (shown when multi-unit selected) */
.config-unit-count {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-4);
    padding: var(--space-4);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
}

.config-unit-count-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.config-unit-count-input {
    width: 80px;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-sm);
    text-align: center;
}

.config-unit-count-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

/* Area unit toggle */
.config-toggle-group {
    display: flex;
    gap: 0;
}

.config-toggle-btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    color: var(--color-text-secondary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: all 0.15s ease;
}

.config-toggle-btn:first-child {
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.config-toggle-btn:last-child {
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    border-left: none;
}

.config-toggle-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.config-toggle-btn.active {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    color: white;
}

/* Config card header with right controls */
.config-card-header-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.config-select-sm {
    width: auto;
    min-width: 150px;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-xs);
}

/* ====================================
   Deploy View
   ==================================== */

.deploy-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.deploy-card {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    transition: all 0.15s ease;
}

.deploy-card:hover {
    border-color: var(--color-border-medium);
    box-shadow: var(--shadow-sm);
}

.deploy-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-accent-light);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.deploy-card-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-accent-primary);
}

.deploy-card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.deploy-card-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.deploy-card-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.deploy-card-status {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    padding: var(--space-1) var(--space-3);
    background: var(--color-bg-hover);
    border-radius: var(--radius-full);
}

/* ====================================
   HVAC Heating - Room Multi-Select
   ==================================== */

/* Vertical inline form for complex inputs */
.config-inline-form-vertical {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
}

.config-inline-form-wide {
    max-width: 400px;
}

.config-form-row {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.config-form-row .config-form-input,
.config-form-row .config-form-select {
    flex: 1;
}

/* Room multi-select component */
.room-multiselect {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.room-multiselect-header {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    background: var(--color-bg-hover);
    border-bottom: 1px solid var(--color-border-light);
}

.room-multiselect-options {
    max-height: 200px;
    overflow-y: auto;
    padding: var(--space-2);
}

.room-group {
    margin-bottom: var(--space-2);
}

.room-group:last-child {
    margin-bottom: 0;
}

.room-group-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    padding: var(--space-1) var(--space-2);
    margin-bottom: var(--space-1);
}

.room-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background 0.1s ease;
}

.room-checkbox:hover {
    background: var(--color-bg-hover);
}

.room-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-accent-primary);
}

.room-checkbox span {
    flex: 1;
}

.room-multiselect-total {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-accent-primary);
    background: var(--color-accent-light);
    border-top: 1px solid var(--color-border-light);
}

/* Room checkbox row with radiator input */
.room-checkbox-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
}

.room-checkbox-row .room-checkbox {
    flex: 1;
}

.radiator-count-input {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    padding-right: var(--space-2);
}

.radiator-count-input input {
    width: 48px;
    padding: var(--space-1);
    font-size: var(--font-size-xs);
    text-align: center;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
}

.radiator-count-input input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

/* ====================================
   Light Configuration Form
   ==================================== */

/* Inline Add Form - clean minimal styling */
.light-form {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
    background: var(--color-bg-primary);
}

.light-form-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.light-form-type {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.light-form-close {
    background: none;
    border: none;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 2px;
    line-height: 1;
}

.light-form-close:hover {
    color: var(--color-text-primary);
}

.light-form-name input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
}

.light-form-name input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.light-form-params {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2) var(--space-3);
    margin-bottom: var(--space-3);
}

.light-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
}

.btn-text {
    background: none;
    border: none;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
}

.btn-text:hover {
    color: var(--color-text-primary);
}

.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-sm);
}

/* Inputs section (sensor selection) */
.light-form-inputs {
    margin-top: var(--space-3);
}

.form-input-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.form-input-row label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.form-input-row select {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    background: var(--color-bg-primary);
    cursor: pointer;
}

.form-input-row select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.form-input-row select:disabled {
    background: var(--color-bg-secondary);
    color: var(--color-text-muted);
    cursor: not-allowed;
}

/* Inputs in expanded params */
.inputs-section {
    margin-top: var(--space-3);
}

.inputs-section select {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    background: var(--color-bg-primary);
}

.inputs-section select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.inputs-section select:disabled {
    background: var(--color-bg-secondary);
    color: var(--color-text-muted);
}

.param-field-wide {
    grid-column: 1 / -1;
}

/* Info icon with tooltip */
.info-icon {
    margin-left: var(--space-1);
    color: var(--color-text-muted);
    cursor: help;
    font-size: var(--font-size-xs);
}

.info-icon:hover {
    color: var(--color-accent-primary);
}

.light-form-content {
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.light-form-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.light-form-row label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.light-form-row input[type="text"] {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    outline: none;
}

.light-form-row input[type="text"]:focus {
    border-color: var(--color-accent-primary);
}

.light-form-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.light-form-section-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.light-params-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

.light-param-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.light-param-field label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.light-param-input-group {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.light-param-input-group input {
    width: 60px;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    text-align: center;
}

.light-param-input-group input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.light-param-unit {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.light-sensor-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.light-sensor-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
}

.light-sensor-option:hover {
    background: var(--color-bg-hover);
}

.light-sensor-option.sensor-current-room {
    background: var(--color-accent-light);
    border-color: var(--color-accent-primary);
}

.light-sensor-option input[type="radio"] {
    accent-color: var(--color-accent-primary);
}

.light-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
}

.light-form-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.light-form-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

/* Form Parameters Grid */
.form-params-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

.form-param {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.form-param label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.form-param-input {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.form-param-input input {
    width: 70px;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    text-align: center;
}

.form-param-input input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.form-param-unit {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Expanded Parameters Grid */
.params-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

.param-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.param-field label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.param-input-group {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.param-input-group input {
    width: 60px;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    text-align: center;
}

.param-input-group input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.param-unit {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Cancel Button */
.btn-cancel {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    background: transparent;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-cancel:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
    color: var(--color-text-primary);
}

/* ====================================
   Light Item Display
   ==================================== */

.device-item-light {
    cursor: pointer;
}

.device-item-light:hover {
    background: var(--color-bg-hover);
}

.device-item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
}

.device-item-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.device-type-badge {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-normal);
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.device-item-summary {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.device-item-technical {
    font-size: var(--font-size-2xs);
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    color: var(--color-text-muted);
}

.device-item-connections {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ====================================
   Light Expanded Parameters Grid
   ==================================== */

.light-params-edit-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

.light-param-edit {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.light-param-edit label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.light-param-edit .light-param-input-group input {
    width: 70px;
}

.light-param-edit select {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    background: var(--color-bg-primary);
    cursor: pointer;
}

.light-param-edit select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.light-param-sensor {
    grid-column: 1 / -1;
    margin-top: var(--space-2);
    padding-top: var(--space-2);
    border-top: 1px solid var(--color-border-light);
}

/* ====================================
   Room Cards Layout (House Tab)
   ==================================== */

.room-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-4);
}

/* ====================================
   Light Item Wrapper (Nested Structure)
   ==================================== */

.light-item-wrapper {
    border-bottom: 1px solid var(--color-border-light);
}

.light-item-wrapper:last-child {
    border-bottom: none;
}

.light-item-wrapper.is-expanded {
    background: var(--color-bg-secondary);
}

/* Light Item Row (clickable header) */
.light-item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    cursor: pointer;
    transition: background 0.1s ease;
}

.light-item-row:hover {
    background: var(--color-bg-hover);
}

.light-item-row:hover .config-list-item-remove {
    opacity: 1;
}

.light-item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
}

.light-item-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.light-item-summary {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

/* Expanded Params (nested inside wrapper) */
.light-item-params {
    padding: var(--space-2) var(--space-4) var(--space-3);
    padding-left: var(--space-6);
}

/* ====================================
   Output Configuration Form
   ==================================== */

/* Inline Add Form - clean minimal styling */
.output-form {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
    background: var(--color-bg-primary);
}

.output-form-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.output-form-type {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.output-form-close {
    background: none;
    border: none;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.output-form-close:hover {
    color: var(--color-text-primary);
}

.output-form-name input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
}

.output-form-name input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.output-form-params {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2) var(--space-3);
    margin-bottom: var(--space-3);
}

.output-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
}

.output-form-content {
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.output-form-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.output-form-row label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.output-form-row input[type="text"] {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    outline: none;
}

.output-form-row input[type="text"]:focus {
    border-color: var(--color-accent-primary);
}

.output-form-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.output-form-section-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.output-form-params-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

.output-form-param {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.output-form-param label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.output-form-checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    cursor: pointer;
}

.output-form-checkbox-label input[type="checkbox"] {
    accent-color: var(--color-accent-primary);
}

.output-form-param select {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    background: var(--color-bg-primary);
    cursor: pointer;
}

.output-form-param select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.output-form-param input[type="time"] {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
}

.output-form-param input[type="time"]:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.output-form-input-group {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.output-form-input-group input {
    width: 80px;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    text-align: center;
}

.output-form-input-group input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.output-form-unit {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.output-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
}

/* ====================================
   Output Item Wrapper (Nested Structure)
   ==================================== */

.output-item-wrapper {
    border-bottom: 1px solid var(--color-border-light);
}

.output-item-wrapper:last-child {
    border-bottom: none;
}

.output-item-wrapper.is-expanded {
    background: var(--color-bg-secondary);
}

/* Output Item Row (clickable header) */
.output-item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    cursor: pointer;
    transition: background 0.1s ease;
}

.output-item-row:hover {
    background: var(--color-bg-hover);
}

.output-item-row:hover .config-list-item-remove {
    opacity: 1;
}

.output-item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
}

.output-item-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.output-item-summary {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

/* Expanded Params (nested inside wrapper) */
.output-item-params {
    padding: var(--space-2) var(--space-4) var(--space-3);
    padding-left: var(--space-6);
}

.output-params-edit-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

.output-param-edit {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.output-param-edit label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.output-param-checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    cursor: pointer;
}

.output-param-checkbox-label input[type="checkbox"] {
    accent-color: var(--color-accent-primary);
}

.output-param-edit select {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    background: var(--color-bg-primary);
    cursor: pointer;
}

.output-param-edit select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.output-param-edit input[type="time"] {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
}

.output-param-edit input[type="time"]:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.output-param-input-group {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.output-param-input-group input {
    width: 80px;
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    text-align: center;
}

.output-param-input-group input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.output-param-unit {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ====================================
   GVS Panel Visual Styles
   ==================================== */

.panel-item-wrapper {
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    margin-bottom: var(--space-2);
}

.panel-item-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-3);
}

.panel-item-content {
    flex: 1;
}

.panel-item-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.panel-visual {
    display: flex;
    justify-content: center;
}

/* GVS Panel Grid */
.gvs-panel {
    background: #f5f5f5;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.gvs-panel-1col { width: 130px; }
.gvs-panel-2col { width: 240px; }
.gvs-panel-3col { width: 350px; }

.gvs-row {
    display: flex;
    gap: 6px;
}

.gvs-button {
    flex: 1;
    height: 44px;
    background: #e8e8e8;
    border: 1px solid #d0d0d0;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}

.gvs-button:hover {
    background: #ddd;
}

.gvs-button-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #bbb;
}

.gvs-display-strip {
    display: flex;
    background: #2a2a2a;
    border-radius: 3px;
    padding: 8px 6px;
    gap: 6px;
}

.gvs-display-cell {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
}

.gvs-label {
    font-size: 11px;
    color: #5cb8ff;
    font-family: monospace;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100px;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 2px;
}

.gvs-label:hover {
    background: rgba(92, 184, 255, 0.2);
}

/* MDT Panel Grid (no display strip) */
.mdt-panel {
    background: #f5f5f5;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.mdt-panel-1col { width: 130px; }
.mdt-panel-2col { width: 240px; }
.mdt-panel-3col { width: 350px; }

.mdt-row {
    display: flex;
    gap: 6px;
}

.mdt-button {
    flex: 1;
    height: 44px;
    background: #e8e8e8;
    border: 1px solid #d0d0d0;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}

.mdt-button:hover {
    background: #ddd;
}

.mdt-button-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #bbb;
}

/* Panel Form (inline add form) */
.panel-form {
    background: var(--color-bg-secondary);
    padding: var(--space-3);
    margin-bottom: var(--space-2);
    border-radius: var(--radius-md);
}

.panel-form-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.panel-form-type {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.panel-form-close {
    background: none;
    border: none;
    font-size: 18px;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.panel-form-close:hover {
    color: var(--color-text-primary);
}

.panel-form-name input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
}

.panel-form-name input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.panel-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
}

/* ====================================
   Config Item Actions (Edit/Delete)
   ==================================== */

.config-item-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.config-item-actions {
    display: flex;
    gap: var(--space-1);
    opacity: 0;
    transition: opacity 0.15s;
}

.light-item-row:hover .config-item-actions,
.output-item-row:hover .config-item-actions,
.panel-item-row:hover .config-item-actions,
.config-list-item:hover .config-item-actions {
    opacity: 1;
}

.config-action-btn {
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, color 0.15s;
}

.config-action-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-secondary);
}

.config-action-btn svg {
    width: 16px;
    height: 16px;
}

.config-action-delete:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* ====================================
   Socket Configuration Styles
   ==================================== */

.socket-item-wrapper {
    border-bottom: 1px solid var(--color-border-light);
}

.socket-item-wrapper:last-child {
    border-bottom: none;
}

.socket-item-wrapper.is-expanded {
    background: var(--color-bg-secondary);
}

.socket-item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    cursor: pointer;
    transition: background 0.1s ease;
}

.socket-item-row:hover {
    background: var(--color-bg-hover);
}

.socket-item-row:hover .config-item-actions {
    opacity: 1;
}

.socket-item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
}

.socket-item-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.socket-item-summary {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.socket-item-params {
    padding: var(--space-2) var(--space-4) var(--space-3);
    padding-left: var(--space-6);
}

.socket-item-params select {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.socket-item-params select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

/* Socket Form */
.socket-form {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
    background: var(--color-bg-primary);
}

.socket-form-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.socket-form-type {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.socket-form-close {
    background: none;
    border: none;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.socket-form-close:hover {
    color: var(--color-text-primary);
}

.socket-form-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    margin-bottom: var(--space-3);
}

.socket-form-row label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.socket-form-row input[type="text"],
.socket-form-row select {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    outline: none;
}

.socket-form-row input[type="text"]:focus,
.socket-form-row select:focus {
    border-color: var(--color-accent-primary);
}

.socket-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
}

/* Socket suggestion in card header */
.socket-suggestion {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-weight: var(--font-weight-normal);
    margin-left: var(--space-2);
}

/* ============================================
   Projects Page
   ============================================ */

.projects-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6);
}

.projects-header h1 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-4);
    padding: var(--space-6);
}

.project-card {
    padding: var(--space-5);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.15s ease;
}

.project-card:hover {
    border-color: var(--color-accent-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.project-card h3 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-2) 0;
}

.project-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.empty-state {
    text-align: center;
    padding: var(--space-12);
    color: var(--color-text-muted);
}

.empty-state-hint {
    font-size: var(--font-size-sm);
    margin-top: var(--space-2);
}

/* ============================================
   New Project Modal
   ============================================ */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

#new-project-modal .modal-content {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow: hidden;
    transform: translateY(20px);
    transition: transform 0.2s ease;
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

#new-project-modal .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-border-light);
}

#new-project-modal .modal-header h2 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: 0;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: background 0.15s ease, color 0.15s ease;
}

.modal-close:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.modal-close svg {
    width: 18px;
    height: 18px;
}

#new-project-modal .modal-body {
    padding: var(--space-6);
}

.modal-form-group {
    margin-bottom: var(--space-5);
}

.modal-form-group:last-child {
    margin-bottom: 0;
}

.modal-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.modal-input {
    width: 100%;
    height: var(--input-height);
    padding: 0 var(--space-3);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.modal-input:focus {
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

.modal-input::placeholder {
    color: var(--color-text-muted);
}

.modal-building-types {
    margin-top: var(--space-3);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    background: var(--color-bg-secondary);
}

.modal-btn {
    height: var(--button-height);
    padding: 0 var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s ease;
}

.modal-btn-secondary {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-medium);
    color: var(--color-text-secondary);
}

.modal-btn-secondary:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.modal-btn-primary {
    background: var(--color-accent-primary);
    border: 1px solid var(--color-accent-primary);
    color: white;
}

.modal-btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

/* ====================================
   Login / Register Views
   ==================================== */

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
    padding: var(--space-6);
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-8);
}

.login-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 var(--space-2) 0;
}

.login-header p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.login-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
}

.btn-full {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
}

.login-footer {
    text-align: center;
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

.login-footer p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

.login-footer a {
    color: var(--color-accent-primary);
    text-decoration: none;
    font-weight: 500;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* Hide nav when on login/register */
body.auth-view .top-nav,
body.auth-view .project-tabs {
    display: none;
}

body.auth-view .main-content {
    padding-top: 0;
}