/* ========================================
   RAI Robot Industrial Dashboard
   Dark Theme with Glassmorphism
   ======================================== */

:root {
    /* Colors - Dark (Default) */
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.8);
    --bg-card-hover: rgba(31, 41, 55, 0.9);
    
    --accent-primary: #00d4ff;
    --accent-secondary: #7c3aed;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --border-color: rgba(75, 85, 99, 0.4);
    --glow-primary: 0 0 20px rgba(0, 212, 255, 0.3);
    --glow-accent: 0 0 30px rgba(124, 58, 237, 0.2);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --gap-sm: 0.5rem;
    --gap-md: 1rem;
    --gap-lg: 1.5rem;
    --gap-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

/* Light Theme Variables */
body.light-theme {
    --bg-primary: #f3f4f6;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    
    --accent-primary: #0088cc;
    --accent-secondary: #6d28d9;
    --accent-success: #059669;
    --accent-warning: #d97706;
    --accent-danger: #dc2626;
    
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    
    --border-color: rgba(209, 213, 219, 0.8);
    --glow-primary: 0 4px 12px rgba(0, 0, 0, 0.05);
    --glow-accent: 0 8px 16px rgba(109, 40, 217, 0.1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    background-image: 
        radial-gradient(ellipse at top left, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    overflow-x: hidden;
}

/* Status Bar */
.status-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(180deg, var(--bg-secondary), rgba(17, 24, 39, 0.95));
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--gap-lg);
    z-index: 1000;
}

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

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-primary);
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { filter: drop-shadow(0 0 5px var(--accent-primary)); }
    50% { filter: drop-shadow(0 0 15px var(--accent-primary)); }
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    padding: 0.5rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    transition: var(--transition-normal);
}

.indicator.connected {
    background: var(--accent-success);
    box-shadow: 0 0 10px var(--accent-success);
    animation: blink 2s ease-in-out infinite;
}

.indicator.disconnected {
    background: var(--accent-danger);
    box-shadow: 0 0 10px var(--accent-danger);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
}

.system-info {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-template-rows: auto;
    gap: var(--gap-md);
    padding: calc(60px + var(--gap-lg)) var(--gap-lg) var(--gap-lg);
    max-width: 1920px;
    margin: 0 auto;
}

/* Card Base Styles */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    overflow: hidden;
    transition: var(--transition-normal);
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--glow-primary);
}

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

.card-header h2 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.card-content {
    padding: var(--gap-md);
}

/* Grid Placement */
.card-camera { grid-column: 1 / 7; grid-row: 1 / 3; }
.card-map { grid-column: 7 / 13; grid-row: 1 / 3; }
.card-control { grid-column: 1 / 5; grid-row: 3 / 5; }
.card-odom { grid-column: 5 / 8; grid-row: 3 / 4; }
.card-velocity { grid-column: 8 / 11; grid-row: 3 / 4; }
.card-battery { grid-column: 11 / 13; grid-row: 3 / 4; }
.card-imu { grid-column: 5 / 13; grid-row: 4 / 5; }

/* Camera Section */
.camera-container {
    position: relative;
    width: 100%;
    height: 300px;
    background: #000;
    border-radius: var(--radius-md);
    overflow: hidden;
}

#camera-stream {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
}

.placeholder svg {
    width: 64px;
    height: 64px;
    margin-bottom: var(--gap-md);
    opacity: 0.5;
}

/* Map Section */
.map-container {
    position: relative;
    width: 100%;
    height: 300px;
    background: #0d1117;
    border-radius: var(--radius-md);
    overflow: hidden;
}

#map-canvas {
    width: 100%;
    height: 100%;
}

.robot-marker {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border: 2px solid #fff;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px var(--accent-primary);
    z-index: 10;
    display: none;
}

.robot-marker::after {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-bottom: 8px solid var(--accent-primary);
}

/* Control Section */
.control-container {
    display: flex;
    flex-direction: column;
    gap: var(--gap-lg);
    align-items: center;
}

.joystick-wrapper {
    text-align: center;
}

.joystick-zone {
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1), transparent);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    position: relative;
}

.joystick-label {
    margin-top: var(--gap-sm);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* Direction Buttons */
.direction-buttons {
    width: 100%;
}

.dpad {
    display: grid;
    grid-template-columns: repeat(3, 50px);
    grid-template-rows: repeat(3, 50px);
    gap: 4px;
    justify-content: center;
}

.btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn:hover {
    background: rgba(0, 212, 255, 0.2);
    border-color: var(--accent-primary);
}

.btn:active, .btn.active {
    background: var(--accent-primary);
    color: var(--bg-primary);
    transform: scale(0.95);
}

.btn-direction {
    border-radius: var(--radius-sm);
    flex-direction: column;
    gap: 2px;
}

.btn-direction span {
    font-size: 0.625rem;
    font-weight: 600;
    opacity: 0.5;
}

.btn-direction svg {
    width: 20px;
    height: 20px;
}

.btn-forward-left { grid-column: 1; grid-row: 1; }
.btn-forward { grid-column: 2; grid-row: 1; }
.btn-forward-right { grid-column: 3; grid-row: 1; }
.btn-left { grid-column: 1; grid-row: 2; }
.btn-stop { 
    grid-column: 2; 
    grid-row: 2;
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--accent-danger);
}
.btn-stop:hover {
    background: var(--accent-danger);
}
.btn-right { grid-column: 3; grid-row: 2; }
.btn-backward-left { grid-column: 1; grid-row: 3; }
.btn-backward { grid-column: 2; grid-row: 3; }
.btn-backward-right { grid-column: 3; grid-row: 3; }

/* Rotation Controls */
.rotation-controls {
    display: flex;
    gap: var(--gap-md);
    justify-content: center;
}

.btn-rotate {
    width: 60px;
    height: 50px;
    border-radius: var(--radius-md);
    flex-direction: column;
    gap: 2px;
}

.btn-rotate span {
    font-size: 0.625rem;
    font-weight: 600;
    opacity: 0.5;
}

.btn-rotate svg {
    width: 20px;
    height: 20px;
}

/* Speed Control */
.speed-control {
    width: 100%;
    text-align: center;
}

.speed-control label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: var(--gap-sm);
}

#speed-value {
    color: var(--accent-primary);
    font-weight: 600;
}

#speed-slider {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    outline: none;
}

#speed-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px var(--accent-primary);
}

#speed-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px var(--accent-primary);
}

/* Odometry Section */
.odom-container {
    display: flex;
    align-items: center;
    gap: var(--gap-lg);
}

.odom-grid {
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
    flex: 1;
}

.odom-item {
    display: flex;
    align-items: baseline;
    gap: var(--gap-sm);
    padding: var(--gap-sm) var(--gap-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
}

.odom-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    min-width: 20px;
}

.odom-value {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    font-weight: 500;
    flex: 1;
}

.odom-unit {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.orientation-viz {
    flex-shrink: 0;
}

.compass {
    width: 80px;
    height: 80px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    position: relative;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1), transparent);
}

.compass-arrow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 4px;
    height: 30px;
    background: linear-gradient(to top, transparent, var(--accent-primary));
    transform-origin: bottom center;
    transform: translate(-50%, -100%) rotate(0deg);
    border-radius: 2px;
    transition: transform 100ms ease;
}

.compass-n {
    position: absolute;
    top: 4px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.625rem;
    font-weight: 700;
    color: var(--accent-primary);
}

/* Velocity Gauges */
.velocity-container {
    height: 100%;
}

.gauge-row {
    display: flex;
    justify-content: space-around;
    gap: var(--gap-md);
}

.gauge-wrapper {
    text-align: center;
}

.gauge {
    position: relative;
    width: 100px;
    height: 100px;
}

.gauge-svg {
    transform: rotate(-90deg);
}

.gauge-bg {
    fill: none;
    stroke: var(--bg-secondary);
    stroke-width: 8;
}

.gauge-fill {
    fill: none;
    stroke: var(--accent-primary);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 314;
    stroke-dashoffset: 314;
    transition: stroke-dashoffset 200ms ease;
}

.angular-gauge .gauge-fill {
    stroke: var(--accent-secondary);
}

.gauge-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.gauge-value {
    display: block;
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
}

.gauge-unit {
    font-size: 0.625rem;
    color: var(--text-muted);
}

.gauge-label {
    display: block;
    margin-top: var(--gap-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Battery Section */
.battery-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--gap-md);
}

.battery-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--gap-sm);
}

.battery-icon {
    display: flex;
    align-items: center;
}

.battery-body {
    width: 60px;
    height: 28px;
    border: 2px solid var(--text-secondary);
    border-radius: 4px;
    padding: 2px;
    position: relative;
    overflow: hidden;
}

.battery-level {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-danger), var(--accent-warning), var(--accent-success));
    border-radius: 2px;
    transition: width 500ms ease;
    width: 0%;
}

.battery-cap {
    width: 4px;
    height: 12px;
    background: var(--text-secondary);
    border-radius: 0 2px 2px 0;
    margin-left: 2px;
}

.battery-info {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.battery-voltage {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 600;
}

.battery-unit {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.charging-status {
    display: none;
    align-items: center;
    gap: var(--gap-sm);
    padding: 0.25rem 0.75rem;
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid var(--accent-success);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--accent-success);
}

.charging-status.active {
    display: flex;
}

.charging-icon {
    animation: charging-pulse 1s ease-in-out infinite;
}

@keyframes charging-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* IMU Section */
.imu-container {
    display: flex;
    gap: var(--gap-xl);
}

.imu-group {
    flex: 1;
}

.imu-group h3 {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: var(--gap-md);
}

.imu-values {
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
}

.imu-axis {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
}

.axis-label {
    width: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.axis-bar-container {
    flex: 1;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.axis-bar {
    position: absolute;
    left: 50%;
    height: 100%;
    background: var(--accent-primary);
    border-radius: var(--radius-full);
    transition: width 100ms ease, transform 100ms ease;
    transform: translateX(0);
    width: 0%;
}

.axis-bar.gyro {
    background: var(--accent-secondary);
}

.axis-value {
    width: 60px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-align: right;
    color: var(--text-secondary);
}

/* Icon Buttons */
.btn-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    padding: 0;
}

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

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: var(--gap-lg);
    right: var(--gap-lg);
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
    z-index: 1001;
}

.toast {
    padding: var(--gap-md) var(--gap-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    animation: slide-in 300ms ease;
    max-width: 350px;
}

.toast.success { border-left: 4px solid var(--accent-success); }
.toast.error { border-left: 4px solid var(--accent-danger); }
.toast.warning { border-left: 4px solid var(--accent-warning); }
.toast.info { border-left: 4px solid var(--accent-primary); }

@keyframes slide-in {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .card-camera { grid-column: 1 / 4; grid-row: 1 / 2; }
    .card-map { grid-column: 4 / 7; grid-row: 1 / 2; }
    .card-control { grid-column: 1 / 3; grid-row: 2 / 4; }
    .card-odom { grid-column: 3 / 5; grid-row: 2 / 3; }
    .card-velocity { grid-column: 5 / 7; grid-row: 2 / 3; }
    .card-battery { grid-column: 3 / 5; grid-row: 3 / 4; }
    .card-imu { grid-column: 5 / 7; grid-row: 3 / 4; }
}

@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .card-camera,
    .card-map,
    .card-control,
    .card-odom,
    .card-velocity,
    .card-battery,
    .card-imu {
        grid-column: 1 / -1;
        grid-row: auto;
    }
    
    .status-bar {
        flex-wrap: wrap;
        height: auto;
        padding: var(--gap-sm) var(--gap-md);
        gap: var(--gap-sm);
    }
    
    .imu-container {
        flex-direction: column;
    }
}

/* ========================================
   Face Scan Modal
   ======================================== */

/* Modal Container */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    max-width: 450px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modal-appear 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), var(--glow-primary);
}

@keyframes modal-appear {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--gap-md) var(--gap-lg);
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(180deg, rgba(0, 212, 255, 0.1), transparent);
}

.modal-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.btn-close-modal {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

.btn-close-modal:hover {
    background: var(--accent-danger);
    color: var(--bg-primary);
}

.modal-body {
    padding: var(--gap-lg);
}

/* Face Scan Trigger Button */
.btn-facescan-trigger {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.3), rgba(0, 212, 255, 0.3));
    border-color: var(--accent-secondary);
    color: var(--accent-secondary);
}

.btn-facescan-trigger:hover {
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
    color: var(--bg-primary);
    box-shadow: var(--glow-accent);
}

/* Face Scan Container */
.facescan-container {
    display: flex;
    flex-direction: column;
    gap: var(--gap-lg);
    align-items: center;
}

.facescan-status {
    padding: 0.25rem 0.75rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--accent-primary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
}

/* Face Preview */
.face-preview {
    width: 100%;
    display: flex;
    justify-content: center;
}

.face-frame {
    position: relative;
    width: 220px;
    height: 220px;
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 2px solid var(--border-color);
}

#face-canvas {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#face-webcam {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1); /* Mirror the webcam for natural interaction */
}

.face-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.face-guide {
    width: 100%;
    height: 100%;
    color: var(--accent-primary);
    opacity: 0.6;
}

.face-direction {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    color: var(--accent-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.face-direction.active {
    opacity: 0.8;
}

.face-instruction {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: var(--gap-sm) var(--gap-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    width: 100%;
}

/* Face Scan Buttons */
.facescan-buttons {
    width: 100%;
    display: flex;
    justify-content: center;
}

.facescan-dpad {
    display: grid;
    grid-template-columns: repeat(3, 60px);
    grid-template-rows: repeat(3, 60px);
    gap: 6px;
    justify-content: center;
}

.btn-facescan {
    position: relative;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.btn-facescan svg {
    width: 20px;
    height: 20px;
}

.btn-facescan span {
    font-size: 0.625rem;
    font-weight: 500;
    text-transform: uppercase;
}

.btn-facescan:hover {
    background: rgba(0, 212, 255, 0.15);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-facescan.selected {
    background: rgba(0, 212, 255, 0.25);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: var(--glow-primary);
}

.btn-facescan.captured {
    border-color: var(--accent-success);
}

.btn-facescan.captured .captured-indicator {
    opacity: 1;
}

/* Button placement in grid */
#btn-face-up { grid-column: 2; grid-row: 1; }
#btn-face-left { grid-column: 1; grid-row: 2; }
#btn-face-front { grid-column: 2; grid-row: 2; }
#btn-face-right { grid-column: 3; grid-row: 2; }
#btn-face-down { grid-column: 2; grid-row: 3; }

.btn-face-front {
    background: rgba(124, 58, 237, 0.2) !important;
    border-color: var(--accent-secondary) !important;
}

.btn-face-front:hover {
    background: rgba(124, 58, 237, 0.3) !important;
    border-color: var(--accent-secondary) !important;
    color: var(--accent-secondary) !important;
}

/* Captured Indicator */
.captured-indicator {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 10px;
    height: 10px;
    background: var(--accent-success);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition-fast);
    box-shadow: 0 0 6px var(--accent-success);
}

/* Action Buttons */
.facescan-actions {
    display: flex;
    gap: var(--gap-md);
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
}

.btn-action {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.btn-action svg {
    width: 18px;
    height: 18px;
}

.btn-capture {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    color: var(--bg-primary);
}

.btn-capture:hover:not(:disabled) {
    box-shadow: var(--glow-primary), var(--glow-accent);
    transform: translateY(-2px);
}

.btn-capture:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-reset-faces {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

.btn-reset-faces:hover {
    background: var(--accent-danger);
    color: var(--bg-primary);
}

.btn-save-faces {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--accent-success);
    color: var(--accent-success);
}

.btn-save-faces:hover:not(:disabled) {
    background: var(--accent-success);
    color: var(--bg-primary);
}

.btn-save-faces:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Capture Animation */
@keyframes flash-capture {
    0% { background: rgba(255, 255, 255, 0); }
    50% { background: rgba(255, 255, 255, 0.8); }
    100% { background: rgba(255, 255, 255, 0); }
}

.face-frame.capturing::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    animation: flash-capture 0.5s ease;
    pointer-events: none;
}

/* Responsive for Face Scan Modal */
@media (max-width: 768px) {
    .modal-content {
        max-width: 95%;
        margin: var(--gap-md);
    }
    
    .facescan-dpad {
        grid-template-columns: repeat(3, 55px);
        grid-template-rows: repeat(3, 55px);
    }
    
    .btn-facescan {
        width: 55px;
        height: 55px;
    }
    
    .facescan-actions {
        width: 100%;
    }
    
    .btn-action {
        flex: 1;
        justify-content: center;
        padding: 0.5rem 0.75rem;
        font-size: 0.75rem;
    }
    
    .face-frame {
        width: 180px;
        height: 180px;
    }
}