:root {
    --primary-bg: #0f172a;
    --secondary-bg: #1e293b;
    --card-bg: #1e293b;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.card {
    background-color: var(--card-bg);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.card-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, var(--accent-color), #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto 2rem;
    border-radius: 1rem;
    overflow: hidden;
    background-color: var(--secondary-bg);
    aspect-ratio: 16 / 9;
}

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

#canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.overlay-message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-secondary);
}

.overlay-message i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.btn i {
    font-size: 1.1rem;
}

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

.btn.primary:hover {
    background-color: #2563eb;
}

.btn.danger {
    background-color: var(--danger-color);
    color: white;
}

.btn.danger:hover {
    background-color: #dc2626;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-card {
    background-color: var(--secondary-bg);
    padding: 1.5rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-card i {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.stat-content h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.stat-content span {
    font-size: 1.5rem;
    font-weight: bold;
}

.warning {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background-color: var(--warning-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    display: none;
    align-items: center;
    gap: 0.5rem;
    animation: slideIn 0.3s ease-out;
    z-index: 1000;
}

.warning i {
    font-size: 1.2rem;
}

.footer {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--secondary-bg);
    color: var(--text-secondary);
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer i {
    color: var(--danger-color);
    margin: 0 0.25rem;
}

.footer a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #60a5fa;
    text-decoration: underline;
}

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

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 1.5s infinite;
    display: inline-block;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: 1rem;
    }

    .card {
        padding: 1.5rem;
    }

    .card-header h1 {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .warning {
        top: 1rem;
        right: 1rem;
        left: 1rem;
    }
}

.good {
    color: var(--success-color) !important;
}

.bad {
    color: var(--danger-color) !important;
}

.loading {
    opacity: 0.7;
    pointer-events: none;
}

.btn, .stat-card, .warning {
    transition: all 0.3s ease;
}