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

:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface2: #232733;
    --border: #2e3345;
    --text: #e4e6f0;
    --text2: #8b8fa3;
    --accent: #6c5ce7;
    --accent-hover: #7f70f0;
    --danger: #e74c3c;
    --danger-hover: #c0392b;
    --success: #2ecc71;
    --radius: 10px;
}

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

.app {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 16px;
}

header {
    text-align: center;
    margin-bottom: 32px;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), #a29bfe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text2);
    margin-top: 6px;
    font-size: 0.95rem;
}

.extract-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 24px;
}

.input-row {
    display: flex;
    gap: 10px;
}

.input-row input {
    flex: 1;
    padding: 12px 16px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

.input-row input:focus {
    border-color: var(--accent);
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.2s;
}

#extractBtn {
    background: var(--accent);
    color: white;
    padding: 12px 28px;
}

#extractBtn:hover { background: var(--accent-hover); }

#extractBtn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.options-row {
    display: flex;
    gap: 20px;
    margin-top: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text2);
    font-size: 0.85rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
}

.status {
    margin-top: 14px;
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.9rem;
}

.status.loading {
    background: rgba(108, 92, 231, 0.15);
    color: var(--accent);
    border: 1px solid rgba(108, 92, 231, 0.3);
}

.status.success {
    background: rgba(46, 204, 113, 0.12);
    color: var(--success);
    border: 1px solid rgba(46, 204, 113, 0.3);
}

.status.error {
    background: rgba(231, 76, 60, 0.12);
    color: var(--danger);
    border: 1px solid rgba(231, 76, 60, 0.3);
}

.hidden { display: none !important; }

.library-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.library-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.library-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.library-controls {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.library-controls input,
.library-controls select {
    padding: 8px 12px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 0.85rem;
    outline: none;
}

.library-controls input:focus,
.library-controls select:focus {
    border-color: var(--accent);
}

.btn-danger {
    background: var(--danger);
    color: white;
    font-size: 0.8rem;
    padding: 8px 14px;
}

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

.video-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.video-card {
    display: flex;
    gap: 14px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    transition: border-color 0.2s;
}

.video-card:hover {
    border-color: var(--accent);
}

.video-thumb {
    width: 120px;
    height: 80px;
    border-radius: 6px;
    object-fit: cover;
    background: var(--bg);
    flex-shrink: 0;
}

.video-thumb.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text2);
    font-size: 2rem;
}

.video-info {
    flex: 1;
    min-width: 0;
}

.video-title {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.video-meta {
    color: var(--text2);
    font-size: 0.8rem;
    margin-bottom: 8px;
}

.video-meta span {
    margin-right: 12px;
}

.video-actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.video-actions button {
    padding: 5px 12px;
    font-size: 0.78rem;
    border-radius: 6px;
}

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

.btn-copy:hover { background: var(--accent-hover); }

.btn-open {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.btn-open:hover { border-color: var(--accent); color: var(--accent); }

.btn-del {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--danger);
}

.btn-del:hover { border-color: var(--danger); background: rgba(231,76,60,0.1); }

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 16px;
}

.pagination button {
    background: var(--surface2);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 8px 16px;
    font-size: 0.85rem;
}

.pagination button:hover:not(:disabled) {
    border-color: var(--accent);
}

.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

#pageInfo {
    color: var(--text2);
    font-size: 0.85rem;
}

.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--surface);
    border: 1px solid var(--accent);
    color: var(--text);
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

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

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text2);
}

@media (max-width: 640px) {
    .input-row { flex-direction: column; }
    .options-row { flex-direction: column; gap: 8px; }
    .library-header { flex-direction: column; align-items: flex-start; }
    .library-controls { width: 100%; }
    .library-controls input { flex: 1; }
    .video-card { flex-direction: column; }
    .video-thumb { width: 100%; height: 160px; }
}