/* ===================================================================
   AR Campus Navigator — Design System
   =================================================================== */

/* --- Design Tokens --- */
:root {
    /* Colors */
    --bg-primary: #0a0e27;
    --bg-secondary: #0f1338;
    --bg-tertiary: #151a42;
    --bg-card: rgba(15, 19, 56, 0.85);
    --bg-glass: rgba(15, 19, 56, 0.6);

    --text-primary: #e8ecf4;
    --text-secondary: #8b92b3;
    --text-muted: #5a6080;

    --accent-cyan: #00f0ff;
    --accent-cyan-dim: rgba(0, 240, 255, 0.15);
    --accent-cyan-glow: rgba(0, 240, 255, 0.4);

    --zone-kindergarten: #FF9F43;
    --zone-elementary: #00D2A0;
    --zone-middle: #3B82F6;
    --zone-highschool: #8B5CF6;
    --zone-university: #06B6D4;

    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;

    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-glass: rgba(255, 255, 255, 0.1);
    --border-accent: rgba(0, 240, 255, 0.3);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(0, 240, 255, 0.15);

    /* Typography */
    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --gap-xs: 4px;
    --gap-sm: 8px;
    --gap-md: 16px;
    --gap-lg: 24px;
    --gap-xl: 32px;

    /* Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;

    /* Glass */
    --glass-blur: blur(20px);
    --glass-saturate: saturate(1.8);
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent-cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

input, select, button { font-family: inherit; font-size: inherit; }

.hidden { display: none !important; }

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

/* ===================================================================
   AUTH OVERLAY
   =================================================================== */
.auth-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}
.auth-overlay.fade-out {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.auth-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: gridShift 20s linear infinite;
}
@keyframes gridShift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(40px, 40px); }
}

.auth-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}
.auth-particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--accent-cyan);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 6s infinite;
}
@keyframes particleFloat {
    0% { opacity: 0; transform: translateY(100vh) scale(0); }
    20% { opacity: 0.6; }
    80% { opacity: 0.3; }
    100% { opacity: 0; transform: translateY(-20vh) scale(1.5); }
}

.auth-container {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 440px;
    padding: var(--gap-lg);
}

.auth-card {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur) var(--glass-saturate);
    -webkit-backdrop-filter: var(--glass-blur) var(--glass-saturate);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: var(--gap-xl) var(--gap-lg);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    animation: cardAppear 0.8s var(--ease-out) both;
}
@keyframes cardAppear {
    from { opacity: 0; transform: translateY(30px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-logo {
    text-align: center;
    margin-bottom: var(--gap-xl);
}

.auth-logo-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--gap-md);
    animation: logoPulse 4s ease-in-out infinite;
    filter: drop-shadow(0 0 20px var(--accent-cyan-glow));
}
@keyframes logoPulse {
    0%, 100% { filter: drop-shadow(0 0 15px var(--accent-cyan-glow)); transform: scale(1); }
    50% { filter: drop-shadow(0 0 30px rgba(0, 240, 255, 0.5)); transform: scale(1.04); }
}

.auth-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-cyan), #a78bfa, var(--accent-cyan));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleShimmer 4s ease infinite;
}
@keyframes titleShimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    margin-top: var(--gap-xs);
}

/* Auth Forms */
.auth-form { display: none; flex-direction: column; gap: var(--gap-md); }
.auth-form.active { display: flex; }

.form-group {
    position: relative;
}
.form-group label {
    display: block;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--gap-xs);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    outline: none;
    transition: all var(--duration-normal) var(--ease-out);
}
.form-group input::placeholder { color: var(--text-muted); }
.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px var(--accent-cyan-dim);
    background: rgba(0, 240, 255, 0.03);
}

.form-group select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%238b92b3'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}
.form-group select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.auth-btn {
    position: relative;
    width: 100%;
    padding: 14px;
    margin-top: var(--gap-sm);
    background: linear-gradient(135deg, var(--accent-cyan), #6366f1);
    color: #000;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}
.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 240, 255, 0.3);
}
.auth-btn:active { transform: translateY(0); }
.btn-glow {
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--accent-cyan), #6366f1, var(--accent-cyan));
    background-size: 200% 200%;
    border-radius: inherit;
    z-index: -1;
    filter: blur(8px);
    opacity: 0;
    transition: opacity var(--duration-normal);
    animation: glowPulse 3s ease infinite;
}
.auth-btn:hover .btn-glow { opacity: 0.5; }
@keyframes glowPulse {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.auth-switch {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.auth-demo-hint {
    text-align: center;
    padding: 10px;
    margin-top: var(--gap-xs);
    background: rgba(0, 240, 255, 0.06);
    border: 1px solid var(--accent-cyan-dim);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--accent-cyan);
    font-family: var(--font-mono);
}

.auth-error {
    text-align: center;
    color: var(--danger);
    font-size: 0.85rem;
    min-height: 20px;
    margin-top: var(--gap-sm);
}

/* ===================================================================
   MAIN APP LAYOUT
   =================================================================== */
.app-container {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.canvas-container {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.canvas-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

/* ===================================================================
   TOP BAR
   =================================================================== */
.top-bar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--gap-sm) var(--gap-lg);
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur) var(--glass-saturate);
    -webkit-backdrop-filter: var(--glass-blur) var(--glass-saturate);
    border-bottom: 1px solid var(--border-subtle);
    height: 56px;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
}

.logo-sm {
    width: 32px;
    height: 32px;
    color: var(--accent-cyan);
    filter: drop-shadow(0 0 8px var(--accent-cyan-glow));
}

.top-bar-info h2 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.zone-badge {
    display: inline-block;
    font-size: 0.65rem;
    padding: 1px 8px;
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
    border-radius: var(--radius-full);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.top-bar-center {
    flex: 1;
    max-width: 400px;
    margin: 0 var(--gap-lg);
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-full);
    padding: 0 var(--gap-md);
    transition: all var(--duration-normal) var(--ease-out);
}
.search-box:focus-within {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px var(--accent-cyan-dim);
}

.search-icon {
    width: 18px;
    height: 18px;
    stroke: var(--text-muted);
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 8px 10px;
    outline: none;
    font-size: 0.85rem;
}
.search-box input::placeholder { color: var(--text-muted); }

/* Search dropdown — floating panel below search box */
.search-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 240, 255, 0.12);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 1px rgba(0, 240, 255, 0.2);
    overflow: hidden;
    z-index: 100;
}
.search-dropdown.hidden { display: none; }

.search-filters {
    display: flex;
    gap: 8px;
    padding: 10px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(15, 23, 42, 0.4);
    overflow-x: auto;
    scrollbar-width: none;
}
.search-filters::-webkit-scrollbar {
    display: none;
}
.filter-pill {
    padding: 6px 14px;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: var(--font-ui);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.filter-pill:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: rgba(0, 240, 255, 0.3);
    color: #fff;
    transform: translateY(-1px);
}
.filter-pill.active {
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(99, 102, 241, 0.2));
    border-color: var(--accent-cyan);
    color: #fff;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.2), inset 0 0 15px rgba(0, 240, 255, 0.05);
    font-weight: 600;
}

.search-results {
    max-height: 280px;
    overflow-y: auto;
}
.search-results:empty { display: none; }
.search-result-item {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    padding: 10px var(--gap-md);
    cursor: pointer;
    transition: background var(--duration-fast);
    border-bottom: 1px solid var(--border-subtle);
}
.search-result-item:hover { background: rgba(0, 240, 255, 0.05); }
.search-result-item:last-child { border-bottom: none; }
.search-result-zone {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.search-result-name {
    font-weight: 500;
    font-size: 0.85rem;
}
.search-result-type {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-left: auto;
    text-transform: uppercase;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
}
.icon-btn:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}
.icon-btn svg {
    width: 18px;
    height: 18px;
}
.icon-btn.active {
    background: var(--accent-cyan-dim);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.ar-btn {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.75rem;
    letter-spacing: 1px;
}

.user-menu {
    position: relative;
    margin-left: var(--gap-sm);
}
.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-cyan), #6366f1);
    color: #000;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.85rem;
    transition: box-shadow var(--duration-normal);
}
.user-avatar:hover { box-shadow: 0 0 15px var(--accent-cyan-glow); }

.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 200px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}
.user-dropdown-header {
    padding: var(--gap-md);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
}
.role-tag {
    font-size: 0.65rem;
    padding: 2px 8px;
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
    border-radius: var(--radius-full);
    font-weight: 600;
    text-transform: uppercase;
}
.dropdown-item {
    width: 100%;
    padding: 10px var(--gap-md);
    background: none;
    border: none;
    color: var(--text-secondary);
    text-align: left;
    cursor: pointer;
    transition: all var(--duration-fast);
}
.dropdown-item:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

/* ===================================================================
   STATS BAR
   =================================================================== */
.stats-bar {
    position: absolute;
    top: 64px;
    left: var(--gap-lg);
    z-index: 90;
    display: flex;
    gap: var(--gap-sm);
    animation: slideDown 0.5s var(--ease-out) both;
    animation-delay: 0.3s;
}

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

.stat-card {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    padding: 8px 14px;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    min-width: 140px;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
}
.stat-card:hover {
    border-color: var(--accent-cyan);
    background: rgba(0, 240, 255, 0.06);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 240, 255, 0.1);
}
.stat-icon { font-size: 1.3rem; }
.stat-value {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
}
.stat-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===================================================================
   ZONE NAVIGATOR
   =================================================================== */
.zone-nav {
    position: absolute;
    bottom: var(--gap-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 90;
    display: flex;
    gap: var(--gap-xs);
    padding: var(--gap-xs);
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.5s var(--ease-out) both;
    animation-delay: 0.5s;
}

@keyframes slideUp {
    from { opacity: 0; transform: translate(-50%, 30px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

.zone-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--duration-normal) var(--ease-out);
}
.zone-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
}
.zone-btn.active {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
}

.zone-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--zone-color);
    box-shadow: 0 0 6px var(--zone-color);
}

/* ===================================================================
   MINIMAP
   =================================================================== */
.minimap-container {
    position: absolute;
    bottom: 80px;
    right: var(--gap-lg);
    z-index: 90;
    width: 240px;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    animation: slideLeft 0.5s var(--ease-out) both;
    animation-delay: 0.6s;
}

@keyframes slideLeft {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

.minimap-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-subtle);
}

.minimap-toggle {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 0 4px;
}

#minimap-canvas {
    display: block;
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
}

.minimap-legend {
    display: flex;
    justify-content: center;
    gap: var(--gap-sm);
    padding: 6px;
    border-top: 1px solid var(--border-subtle);
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 3px;
    font-size: 0.6rem;
    color: var(--text-muted);
    font-weight: 600;
}
.legend-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

/* ===================================================================
   BLE MONITOR
   =================================================================== */
.ble-monitor {
    position: absolute;
    bottom: 80px;
    left: var(--gap-lg);
    z-index: 90;
    width: 340px;
    max-height: 280px;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    animation: slideRight 0.5s var(--ease-out) both;
    animation-delay: 0.7s;
}

@keyframes slideRight {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

.ble-monitor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
}

.ble-monitor-controls {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.7rem;
}

.ble-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--success);
    animation: blink 1.5s infinite;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.ble-monitor-body {
    max-height: 220px;
    overflow-y: auto;
    padding: 4px 0;
}

.ble-log {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    line-height: 1.6;
}

.ble-log-entry {
    display: flex;
    gap: 8px;
    padding: 3px 12px;
    transition: background var(--duration-fast);
    border-left: 2px solid transparent;
}
.ble-log-entry:hover {
    background: rgba(255, 255, 255, 0.02);
}
.ble-log-entry.new {
    animation: logFlash 1s ease-out;
}
@keyframes logFlash {
    from { background: rgba(0, 240, 255, 0.1); border-left-color: var(--accent-cyan); }
    to { background: transparent; border-left-color: transparent; }
}

.ble-log-time { color: var(--text-muted); flex-shrink: 0; }
.ble-log-gw { color: var(--accent-cyan); flex-shrink: 0; min-width: 80px; }
.ble-log-msg { color: var(--text-secondary); }
.ble-log-rssi { color: var(--warning); }
.ble-log-mac { color: var(--zone-highschool); }

/* ===================================================================
   DETAIL SIDEBAR
   =================================================================== */
.detail-sidebar {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 350px;
    z-index: 200;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur) var(--glass-saturate);
    -webkit-backdrop-filter: var(--glass-blur) var(--glass-saturate);
    border-left: 1px solid var(--border-glass);
    box-shadow: -4px 0 30px rgba(0, 0, 0, 0.3);
    transform: translateX(100%);
    transition: transform var(--duration-slow) var(--ease-out);
    overflow-y: auto;
}
.detail-sidebar.visible {
    transform: translateX(0);
}

.detail-close {
    position: absolute;
    top: var(--gap-md);
    right: var(--gap-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1.2rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--duration-fast);
}
.detail-close:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.detail-content {
    padding: var(--gap-xl) var(--gap-lg);
}
.detail-content h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: var(--gap-md);
}
.detail-section {
    margin-bottom: var(--gap-lg);
}
.detail-section-title {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: var(--gap-sm);
}
.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.85rem;
}
.detail-row-label { color: var(--text-secondary); }
.detail-row-value { color: var(--text-primary); font-weight: 500; }

.detail-gateway-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-sm);
}
.detail-gw-card {
    padding: 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    text-align: center;
}
.detail-gw-card .gw-name {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-cyan);
    margin-bottom: 4px;
}
.detail-gw-card .gw-rssi {
    font-size: 0.95rem;
    font-weight: 700;
}
.detail-gw-card .gw-status {
    font-size: 0.65rem;
    color: var(--success);
    margin-top: 2px;
}

/* Student list items */
.student-list-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-subtle);
    cursor: pointer;
    transition: background var(--duration-fast);
}
.student-list-item:hover {
    background: rgba(0, 240, 255, 0.04);
}
.student-list-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
    color: #fff;
    flex-shrink: 0;
}
.student-list-info {
    flex: 1;
    min-width: 0;
}
.student-list-name {
    display: block;
    font-weight: 600;
    font-size: 0.82rem;
    color: var(--text-primary);
}
.student-list-meta {
    display: block;
    font-size: 0.65rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}
.student-list-zone {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* Gateway list items */
.gw-list-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 0;
    border-bottom: 1px solid var(--border-subtle);
    cursor: pointer;
    transition: background var(--duration-fast);
    font-size: 0.8rem;
}
.gw-list-item:hover {
    background: rgba(0, 240, 255, 0.04);
}

/* Alert list items */
.alert-list-item {
    padding: 8px 10px;
    margin-bottom: 8px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-sm);
}
.alert-list-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
}
.alert-list-body {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 3px;
}

/* Signal bar chart */
.signal-bar-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}
.signal-bar-label {
    font-size: 0.72rem;
    color: var(--text-secondary);
    width: 110px;
    flex-shrink: 0;
}
.signal-bar {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
}
.signal-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s var(--ease-out);
}
.signal-bar-count {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    width: 20px;
    text-align: right;
}

/* CRUD Action Buttons */
.crud-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 14px;
    font-size: 0.78rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--duration-fast);
}
.crud-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-muted);
}
.crud-btn.primary {
    background: var(--accent-cyan-dim);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}
.crud-btn.primary:hover {
    background: rgba(0, 240, 255, 0.2);
}
.crud-btn.locate {
    background: rgba(16, 185, 129, 0.1);
    border-color: #10B981;
    color: #10B981;
}
.crud-btn.locate:hover {
    background: rgba(16, 185, 129, 0.2);
}
.crud-btn.danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: #EF4444;
    color: #EF4444;
}
.crud-btn.danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* CRUD Input Fields */
.crud-input {
    padding: 8px 12px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--duration-fast);
}
.crud-input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 2px var(--accent-cyan-dim);
}
.crud-input option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* ===================================================================
   LOADING OVERLAY
   =================================================================== */
.loading-overlay {
    position: absolute;
    inset: 0;
    z-index: 500;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    transition: opacity 0.8s var(--ease-out);
}
.loading-overlay.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    position: relative;
    width: 80px;
    height: 80px;
}
.spinner-ring {
    position: absolute;
    inset: 0;
    border: 2px solid transparent;
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spinnerRotate 1.2s linear infinite;
}
.spinner-ring.delay-1 {
    inset: 10px;
    border-top-color: #6366f1;
    animation-duration: 1.6s;
    animation-direction: reverse;
}
.spinner-ring.delay-2 {
    inset: 20px;
    border-top-color: #a78bfa;
    animation-duration: 2s;
}
@keyframes spinnerRotate {
    to { transform: rotate(360deg); }
}

.loading-text {
    margin-top: var(--gap-lg);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    animation: loadingPulse 1.5s ease infinite;
}
@keyframes loadingPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Panel highlight / flash animation */
.panel-highlight {
    animation: panelFlash 0.5s ease-in-out 8 !important;
    z-index: 9999 !important;
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.8), 0 0 40px rgba(0, 240, 255, 0.4) !important;
    border-color: #00f0ff !important;
    /* DO NOT override transform — CSS2DRenderer needs it for positioning */
}
@keyframes panelFlash {
    0%, 100% { opacity: 1; box-shadow: 0 0 20px rgba(0, 240, 255, 0.8); }
    50% { opacity: 0.3; box-shadow: 0 0 5px rgba(0, 240, 255, 0.3); }
}

/* ===================================================================
   AR VIEW MODE
   =================================================================== */
.ar-mode .top-bar,
.ar-mode .stats-bar,
.ar-mode .zone-nav,
.ar-mode .minimap-container {
    opacity: 0.5;
}
.ar-mode .ar-btn {
    background: var(--accent-cyan);
    color: #000;
    border-color: var(--accent-cyan);
}

/* AR Camera Frame */
.ar-camera-frame {
    position: absolute;
    inset: 60px 20px 20px 20px;
    border: 2px solid var(--accent-cyan);
    border-radius: var(--radius-lg);
    pointer-events: none;
    z-index: 50;
    opacity: 0;
    transition: opacity var(--duration-normal);
}
.ar-mode .ar-camera-frame { opacity: 1; }

.ar-camera-corners {
    position: absolute;
    width: 30px;
    height: 30px;
    border-color: var(--accent-cyan);
    border-style: solid;
    border-width: 0;
}
.ar-corner-tl { top: -2px; left: -2px; border-top-width: 3px; border-left-width: 3px; border-radius: var(--radius-lg) 0 0 0; }
.ar-corner-tr { top: -2px; right: -2px; border-top-width: 3px; border-right-width: 3px; border-radius: 0 var(--radius-lg) 0 0; }
.ar-corner-bl { bottom: -2px; left: -2px; border-bottom-width: 3px; border-left-width: 3px; border-radius: 0 0 0 var(--radius-lg); }
.ar-corner-br { bottom: -2px; right: -2px; border-bottom-width: 3px; border-right-width: 3px; border-radius: 0 0 var(--radius-lg) 0; }

/* ===================================================================
   3D Panel Labels (CSS2D)
   =================================================================== */
.panel-label {
    pointer-events: auto;
    padding: 8px 14px;
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 11px;
    white-space: nowrap;
    cursor: pointer;
    /* DO NOT set transform here — CSS2DRenderer uses inline transform for positioning */
    transition: box-shadow var(--duration-normal) var(--ease-out),
                border-color var(--duration-normal) var(--ease-out),
                margin-top var(--duration-normal) var(--ease-out);
    animation: panelFloat 3s ease-in-out infinite;
}
.panel-label:hover {
    background: rgba(0, 240, 255, 0.15);
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-glow);
    margin-top: -3px;
}

@keyframes panelFloat {
    0%, 100% { margin-top: 0; }
    50% { margin-top: -4px; }
}

.panel-label::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 6px;
    background: var(--accent-cyan);
    opacity: 0.5;
}

.panel-label .panel-name {
    font-weight: 600;
    display: block;
    color: var(--text-primary);
}
.panel-label .panel-info {
    font-size: 9px;
    color: var(--text-muted);
    display: block;
    margin-top: 2px;
}
.panel-label .panel-zone-indicator {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid var(--bg-primary);
}

/* Gateway panel */
.panel-label.gateway {
    border-color: rgba(16, 185, 129, 0.3);
}
.panel-label.gateway .panel-name { color: var(--success); }

/* Student panel */
.panel-label.student {
    border-color: rgba(139, 92, 246, 0.3);
    animation-duration: 2s;
}
.panel-label.student .panel-name { color: var(--zone-highschool); }

/* Teacher panel (mobile gateway) */
.panel-label.staff-teacher {
    border-color: rgba(20, 184, 166, 0.4);
    animation-duration: 2.5s;
}
.panel-label.staff-teacher .panel-name { color: #14B8A6; }

/* Parent panel (mobile gateway) */
.panel-label.staff-parent {
    border-color: rgba(245, 158, 11, 0.4);
    animation-duration: 2.5s;
}
.panel-label.staff-parent .panel-name { color: #F59E0B; }

/* Signal pulse on gateways */
.gateway-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 6px;
    height: 6px;
    margin: -3px 0 0 -3px;
    background: var(--success);
    border-radius: 50%;
}
.gateway-pulse::before,
.gateway-pulse::after {
    content: '';
    position: absolute;
    inset: -6px;
    border: 1px solid var(--success);
    border-radius: 50%;
    animation: signalPulse 2s ease-out infinite;
}
.gateway-pulse::after { animation-delay: 0.6s; }
@keyframes signalPulse {
    from { transform: scale(0.5); opacity: 1; }
    to { transform: scale(2.5); opacity: 0; }
}

/* ===================================================================
   CCTV CAMERA FUSION PANEL
   =================================================================== */
.cctv-panel {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 150;
    width: 660px;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: cctvSlideUp 0.5s var(--ease-out) both;
}
.cctv-panel.hidden {
    display: none;
}
.cctv-panel.visible {
    display: block;
}
@keyframes cctvSlideUp {
    from { opacity: 0; transform: translateX(-50%) translateY(30px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.cctv-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-subtle);
}
.cctv-header-left {
    display: flex;
    align-items: center;
    gap: 8px;
}
.cctv-header-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

.cctv-rec-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #EF4444;
    animation: blink 1.5s infinite;
}
.cctv-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--text-primary);
}
.cctv-badge {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-weight: 600;
}
.cctv-detected {
    font-size: 0.7rem;
    color: var(--text-secondary);
}
.cctv-detected strong {
    color: var(--accent-cyan);
    font-family: var(--font-heading);
}

.cctv-ctrl-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all var(--duration-fast);
}
.cctv-ctrl-btn:hover {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
}
.cctv-ctrl-btn.active {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
}

.cctv-viewport {
    position: relative;
    background: #000;
    line-height: 0;
}
.cctv-viewport canvas {
    width: 100%;
    height: auto;
    display: block;
}

.cctv-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px;
    border-top: 1px solid var(--border-subtle);
}
.cctv-cam-info {
    display: flex;
    align-items: center;
    gap: 8px;
}
.cctv-cam-name {
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-primary);
}
.cctv-cam-zone {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
}

.cctv-select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 4px 8px;
    max-width: 250px;
    cursor: pointer;
}
.cctv-select:focus {
    outline: none;
    border-color: var(--accent-cyan);
}
.cctv-select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.cctv-btn.active {
    background: rgba(239, 68, 68, 0.2);
    border-color: #EF4444;
    color: #EF4444;
}

/* ===================================================================
   RESPONSIVE
   =================================================================== */
@media (max-width: 1200px) {
    .stats-bar { flex-wrap: wrap; }
    .stat-card { min-width: 120px; }
    .ble-monitor { width: 280px; }
    .cctv-panel { width: 480px; }
}

@media (max-width: 768px) {
    .top-bar-center { display: none; }
    .stats-bar {
        top: 60px;
        left: var(--gap-sm);
        right: var(--gap-sm);
    }
    .stat-card {
        flex: 1;
        min-width: 0;
        padding: 6px 8px;
    }
    .stat-label { display: none; }
    .zone-nav {
        flex-wrap: wrap;
        max-width: 90vw;
        border-radius: var(--radius-md);
    }
    .zone-btn { padding: 6px 10px; font-size: 0.7rem; }
    .ble-monitor { display: none; }
    .minimap-container { display: none; }
    .detail-sidebar { width: 100%; }
    .cctv-panel {
        width: 95vw;
        bottom: 60px;
    }
}