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

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --accent-primary: #6366f1;
    --accent-secondary: #818cf8;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border: #2d2d3a;
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

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

header h1 {
    font-size: 2.5rem;
    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;
    margin-bottom: 1rem;
}

.status-bar {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.status {
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.status.loading { background: var(--warning); color: #000; }
.status.ready { background: var(--success); color: #000; }
.status.error { background: var(--danger); color: #fff; }
.status.disconnected { background: var(--bg-card); border: 1px solid var(--border); }
.status.connected { background: var(--success); color: #000; }

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    aspect-ratio: 4/3;
    background: var(--bg-secondary);
    border-radius: 1rem;
    overflow: hidden;
    border: 2px solid var(--border);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

#video, #overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#overlay {
    pointer-events: none;
}

.controls {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.875rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

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

.btn.primary:hover:not(:disabled) {
    background: var(--accent-secondary);
    transform: translateY(-2px);
}

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

.btn.secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
}

.btn.accent {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.btn.accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(245, 158, 11, 0.3);
}

.stats-panel {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    width: 100%;
    max-width: 600px;
}

.stat {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 0.75rem;
    text-align: center;
    border: 1px solid var(--border);
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    transition: all 0.3s ease;
}

.toast.hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(1rem);
    pointer-events: none;
}

.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); }

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4); }
    50% { box-shadow: 0 0 0 10px rgba(99, 102, 241, 0); }
}

.detecting .video-container {
    animation: pulse 2s infinite;
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border);
    width: 90%;
    max-width: 400px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.modal-content h2 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.modal-content input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

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

.modal-actions {
    display: flex;
    gap: 1rem;
}

.modal-actions .btn {
    flex: 1;
}

#profiles-list {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 1.5rem;
}

.profile-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    border: 1px solid var(--border);
}

.profile-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.profile-name {
    font-weight: 600;
    color: var(--text-primary);
}

.profile-samples {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.delete-profile-btn {
    padding: 0.5rem 1rem;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: opacity 0.2s;
}

.delete-profile-btn:hover {
    opacity: 0.8;
}

.no-profiles {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
}

.controls {
    flex-wrap: wrap;
    justify-content: center;
}

@media (max-width: 640px) {
    .controls {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }
    
    .stats-panel {
        grid-template-columns: repeat(2, 1fr);
    }
}