/* ============================================
   MHBM - Belegungsmanagement System
   Modern Dark Theme with Glassmorphism
   ============================================ */

/* --- CSS Variables --- */
:root {
    /* Primary palette */
    --primary-hue: 210;
    --primary: hsl(var(--primary-hue), 100%, 55%);
    --primary-light: hsl(var(--primary-hue), 100%, 65%);
    --primary-dark: hsl(var(--primary-hue), 100%, 40%);
    --primary-glow: hsla(var(--primary-hue), 100%, 55%, 0.3);
    
    /* Accent colors */
    --accent-green: hsl(152, 69%, 45%);
    --accent-green-glow: hsla(152, 69%, 45%, 0.25);
    --accent-red: hsl(0, 84%, 60%);
    --accent-red-glow: hsla(0, 84%, 60%, 0.25);
    --accent-orange: hsl(32, 98%, 56%);
    --accent-orange-glow: hsla(32, 98%, 56%, 0.25);
    --accent-purple: hsl(270, 76%, 60%);
    --accent-purple-glow: hsla(270, 76%, 60%, 0.25);
    --accent-cyan: hsl(187, 85%, 53%);
    --accent-yellow: hsl(48, 96%, 53%);
    
    /* Dark background palette */
    --bg-darkest: hsl(222, 47%, 7%);
    --bg-dark: hsl(222, 41%, 10%);
    --bg-card: hsl(222, 38%, 13%);
    --bg-elevated: hsl(222, 35%, 16%);
    --bg-hover: hsl(222, 32%, 20%);
    --bg-input: hsl(222, 38%, 11%);
    
    /* Glass */
    --glass-bg: rgba(17, 25, 40, 0.75);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: 16px;
    
    /* Text */
    --text-primary: hsl(210, 40%, 96%);
    --text-secondary: hsl(215, 20%, 65%);
    --text-muted: hsl(215, 15%, 45%);
    --text-inverse: hsl(222, 47%, 11%);
    
    /* Border */
    --border: hsl(222, 30%, 20%);
    --border-light: hsl(222, 25%, 25%);
    
    /* Spacing */
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    --header-height: 64px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.45);
    --shadow-glow: 0 0 20px var(--primary-glow);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-darkest);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Background gradient effect */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 20% 50%, hsla(210, 100%, 55%, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, hsla(270, 76%, 60%, 0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 100%, hsla(152, 69%, 45%, 0.03) 0%, transparent 50%);
    z-index: 0;
    pointer-events: none;
}

/* --- Pages --- */
.page { display: none; }
.page.active { display: flex; min-height: 100vh; }

/* --- Login Page --- */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 100vh;
    background: var(--bg-darkest);
    position: relative;
    z-index: 1;
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: 3rem 2.5rem;
    margin: 1rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-logo {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    font-size: 2rem;
    color: #fff;
    box-shadow: 0 0 30px var(--primary-glow);
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px var(--primary-glow); }
    50% { box-shadow: 0 0 40px var(--primary-glow), 0 0 60px hsla(270, 76%, 60%, 0.15); }
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 0.25rem;
}

/* --- Glass Card --- */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

/* --- Form Elements --- */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.form-group label i {
    width: 16px;
    margin-right: 0.25rem;
    opacity: 0.7;
}

input, select, textarea {
    width: 100%;
    padding: 0.7rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

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

select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
    padding-right: 2.5rem;
}

textarea {
    resize: vertical;
    min-height: 80px;
}

/* Checkbox styling */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.4rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition);
}

.checkbox-label:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    accent-color: var(--primary);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border: none;
    border-radius: var(--border-radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 2px 10px var(--primary-glow);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    box-shadow: 0 4px 20px var(--primary-glow);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, var(--accent-green), hsl(152, 69%, 35%));
    color: #fff;
    box-shadow: 0 2px 10px var(--accent-green-glow);
}
.btn-success:hover {
    box-shadow: 0 4px 20px var(--accent-green-glow);
    transform: translateY(-1px);
}

.btn-danger {
    background: linear-gradient(135deg, var(--accent-red), hsl(0, 84%, 48%));
    color: #fff;
    box-shadow: 0 2px 10px var(--accent-red-glow);
}
.btn-danger:hover {
    box-shadow: 0 4px 20px var(--accent-red-glow);
    transform: translateY(-1px);
}

.btn-warning {
    background: linear-gradient(135deg, var(--accent-orange), hsl(32, 98%, 44%));
    color: #fff;
}

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

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

.btn-block { width: 100%; }

.btn-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* --- Sidebar --- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: var(--transition-slow);
    overflow: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 1rem;
    border-bottom: 1px solid var(--glass-border);
}

.sidebar-logo {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: var(--border-radius-sm);
    background: linear-gradient(135deg, var(--primary), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #fff;
}

.sidebar-title {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.sidebar.collapsed .sidebar-title,
.sidebar.collapsed .user-info,
.sidebar.collapsed .menu-item span,
.sidebar.collapsed .menu-section,
.sidebar.collapsed .btn-logout span {
    display: none;
}

.sidebar-toggle {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 6px;
    transition: var(--transition);
}
.sidebar-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Sidebar User */
.sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

.user-avatar {
    font-size: 2rem;
    color: var(--primary-light);
    min-width: 40px;
    text-align: center;
}

.user-info {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Sidebar Menu */
.sidebar-menu {
    flex: 1;
    list-style: none;
    padding: 0.5rem;
    overflow-y: auto;
}

.menu-section {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 1rem 0.75rem 0.35rem;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.75rem;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.menu-item.active {
    background: hsla(var(--primary-hue), 100%, 55%, 0.12);
    color: var(--primary-light);
}

.menu-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--primary);
    border-radius: 0 3px 3px 0;
}

.menu-item i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--glass-border);
}

.btn-logout {
    width: 100%;
    background: transparent;
    color: var(--accent-red);
    border: 1px solid hsla(0, 84%, 60%, 0.2);
    font-size: 0.85rem;
}
.btn-logout:hover {
    background: hsla(0, 84%, 60%, 0.1);
}

/* --- Main Content --- */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
    transition: var(--transition-slow);
    position: relative;
    z-index: 1;
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed);
}

/* Content Header */
.content-header {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 1.5rem;
    background: hsla(222, 47%, 7%, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-left h2 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.4rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.header-badge {
    position: relative;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.15rem;
    transition: var(--transition);
}
.header-badge:hover { color: var(--text-primary); }

.badge-count {
    position: absolute;
    top: -6px;
    right: -8px;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    background: var(--accent-red);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    animation: badge-pulse 2s ease-in-out infinite;
}

@keyframes badge-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

.header-time {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

/* Content Area */
.content-area {
    padding: 1.5rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Dashboard Cards --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--card-accent, var(--primary)), transparent);
}

.stat-card:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card .stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.stat-card .stat-change {
    font-size: 0.75rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.stat-card.blue { --card-accent: var(--primary); }
.stat-card.blue .stat-icon { background: hsla(var(--primary-hue), 100%, 55%, 0.12); color: var(--primary-light); }

.stat-card.green { --card-accent: var(--accent-green); }
.stat-card.green .stat-icon { background: var(--accent-green-glow); color: var(--accent-green); }

.stat-card.red { --card-accent: var(--accent-red); }
.stat-card.red .stat-icon { background: var(--accent-red-glow); color: var(--accent-red); }

.stat-card.orange { --card-accent: var(--accent-orange); }
.stat-card.orange .stat-icon { background: var(--accent-orange-glow); color: var(--accent-orange); }

.stat-card.purple { --card-accent: var(--accent-purple); }
.stat-card.purple .stat-icon { background: var(--accent-purple-glow); color: var(--accent-purple); }

/* --- Data Table --- */
.data-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.data-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.data-section-header h3 {
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.data-section-header h3 i {
    color: var(--primary-light);
}

.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

td {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    border-bottom: 1px solid hsla(222, 30%, 20%, 0.5);
    vertical-align: middle;
}

tr:hover td {
    background: var(--bg-hover);
}

tr:last-child td {
    border-bottom: none;
}

/* --- Status Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-pending { background: hsla(48, 96%, 53%, 0.15); color: var(--accent-yellow); }
.badge-assigned { background: hsla(var(--primary-hue), 100%, 55%, 0.15); color: var(--primary-light); }
.badge-transferred { background: hsla(270, 76%, 60%, 0.15); color: var(--accent-purple); }
.badge-completed { background: var(--accent-green-glow); color: var(--accent-green); }
.badge-cancelled { background: var(--accent-red-glow); color: var(--accent-red); }

.badge-emergency { background: var(--accent-red-glow); color: var(--accent-red); animation: badge-pulse 1.5s ease-in-out infinite; }
.badge-high { background: var(--accent-orange-glow); color: var(--accent-orange); }
.badge-normal { background: hsla(var(--primary-hue), 100%, 55%, 0.15); color: var(--primary-light); }
.badge-low { background: hsla(215, 15%, 45%, 0.2); color: var(--text-secondary); }

.badge-male { background: hsla(210, 100%, 55%, 0.15); color: hsl(210, 100%, 70%); }
.badge-female { background: hsla(330, 80%, 55%, 0.15); color: hsl(330, 80%, 70%); }

.badge-active { background: var(--accent-green-glow); color: var(--accent-green); }
.badge-inactive { background: var(--accent-red-glow); color: var(--accent-red); }

/* --- Progress Bar --- */
.progress-bar {
    height: 8px;
    background: var(--bg-input);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-low { background: var(--accent-green); }
.progress-medium { background: var(--accent-orange); }
.progress-high { background: var(--accent-red); }

/* --- Occupancy Cards --- */
.occupancy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.occupancy-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    transition: var(--transition);
}

.occupancy-card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-md);
}

.occupancy-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.occupancy-card-header h4 {
    font-size: 1rem;
    font-weight: 700;
}

.occupancy-card-header .occ-percent {
    font-size: 1.25rem;
    font-weight: 800;
}

.occupancy-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-top: 1rem;
}

.occ-stat {
    text-align: center;
    padding: 0.5rem;
    background: var(--bg-elevated);
    border-radius: var(--border-radius-sm);
}

.occ-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
}

.occ-stat-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-content {
    width: 100%;
    max-width: 560px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--glass-border);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 6px;
    font-size: 1.1rem;
    transition: var(--transition);
}
.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--glass-border);
}

/* --- Toast Notifications --- */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.25rem;
    border-radius: var(--border-radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    min-width: 280px;
    max-width: 420px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

.toast-success { border-left: 3px solid var(--accent-green); }
.toast-success i { color: var(--accent-green); }

.toast-error { border-left: 3px solid var(--accent-red); }
.toast-error i { color: var(--accent-red); }

.toast-info { border-left: 3px solid var(--primary); }
.toast-info i { color: var(--primary-light); }

.toast-warning { border-left: 3px solid var(--accent-orange); }
.toast-warning i { color: var(--accent-orange); }

.toast-message {
    flex: 1;
    font-size: 0.85rem;
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.2rem;
}

/* --- Filter Bar --- */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.filter-bar select,
.filter-bar input {
    width: auto;
    min-width: 150px;
}

/* --- Chart Container --- */
.chart-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.chart-header h3 {
    font-size: 1rem;
    font-weight: 700;
}

.chart-canvas-wrapper {
    position: relative;
    height: 300px;
}

/* --- Utilities --- */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-secondary); }
.text-success { color: var(--accent-green); }
.text-danger { color: var(--accent-red); }
.text-warning { color: var(--accent-orange); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.error-message {
    padding: 0.75rem;
    background: var(--accent-red-glow);
    border: 1px solid hsla(0, 84%, 60%, 0.3);
    border-radius: var(--border-radius-sm);
    color: var(--accent-red);
    font-size: 0.85rem;
    margin-top: 0.75rem;
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

.empty-state h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.empty-state p {
    font-size: 0.9rem;
}

/* Inline form layout */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .mobile-menu-toggle {
        display: block;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    .occupancy-grid {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .data-section-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .content-area {
        padding: 1rem;
    }
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    gap: 0.75rem;
    color: var(--text-secondary);
}