:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-card: #ffffff;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-muted: #aeaeb2;
    --border-color: #d2d2d7;
    --accent: #0071e3;
    --accent-hover: #0077ed;
    --accent-light: #e8f0fe;
    --danger: #ff3b30;
    --success: #34c759;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-height: 56px;
    --max-width: 1200px;
}

[data-theme="dark"] {
    --bg-primary: #1c1c1e;
    --bg-secondary: #2c2c2e;
    --bg-card: #2c2c2e;
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-muted: #636366;
    --border-color: #48484a;
    --accent: #0a84ff;
    --accent-hover: #409cff;
    --accent-light: #1c3a5e;
    --shadow: 0 2px 12px rgba(0,0,0,0.3);
    --shadow-hover: 0 8px 24px rgba(0,0,0,0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ====== Login Page ====== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}
.login-box {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 40px;
    width: 360px;
    max-width: 90vw;
    box-shadow: var(--shadow);
    text-align: center;
}
.login-box h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}
.login-box p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 14px;
}
.login-box input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 16px;
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition);
    margin-bottom: 16px;
}
.login-box input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}
.login-box button {
    width: 100%;
    padding: 12px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
}
.login-box button:hover { background: var(--accent-hover); }
.login-error {
    color: var(--danger);
    font-size: 14px;
    margin-top: 12px;
    display: none;
}

/* ====== Navbar ====== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 100;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.navbar-brand {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.3px;
}
.navbar-nav {
    display: flex;
    gap: 4px;
}
.nav-item {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
    border: none;
    background: none;
}
.nav-item:hover { color: var(--text-primary); background: var(--bg-secondary); }
.nav-item.active {
    color: var(--accent);
    background: var(--accent-light);
}
.navbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}
.theme-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}
.theme-btn:hover { background: var(--bg-secondary); }

/* ====== Main Content ====== */
.main-content {
    padding-top: calc(var(--nav-height) + 16px);
    padding-bottom: 80px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding-left: 16px;
    padding-right: 16px;
}
.page { display: none; }
.page.active { display: block; }

/* ====== Sources Page ====== */
.source-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 8px 0 16px;
    -webkit-overflow-scrolling: touch;
}
.source-tab {
    padding: 8px 20px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition);
    color: var(--text-secondary);
}
.source-tab:hover { border-color: var(--accent); color: var(--accent); }
.source-tab.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.cat-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 4px 0 16px;
    -webkit-overflow-scrolling: touch;
}
.cat-tab {
    padding: 6px 14px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    background: transparent;
    cursor: pointer;
    font-size: 13px;
    white-space: nowrap;
    transition: all var(--transition);
    color: var(--text-secondary);
}
.cat-tab:hover { color: var(--accent); border-color: var(--accent); }
.cat-tab.active {
    background: var(--accent-light);
    color: var(--accent);
    border-color: var(--accent);
}

/* ====== Video Grid ====== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
    padding: 8px 0;
}
.video-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}
.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.video-card-img {
    width: 100%;
    aspect-ratio: 2/3;
    object-fit: cover;
    background: var(--bg-secondary);
    display: block;
}
.video-card-info {
    padding: 8px 10px;
}
.video-card-title {
    font-size: 13px;
    font-weight: 500;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.video-card-remarks {
    font-size: 11px;
    color: var(--accent);
    margin-top: 4px;
}
.video-card-source {
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ====== Pagination ====== */
.search-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    padding: 20px 0;
    flex-wrap: wrap;
}
.page-btn {
    padding: 6px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition);
    min-width: 36px;
    text-align: center;
}
.page-btn:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
}
.page-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}
.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ====== Search Page ====== */
.search-box {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}
.search-box input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 16px;
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition);
}
.search-box input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}
.search-box button {
    padding: 12px 24px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
}
.search-box button:hover { background: var(--accent-hover); }

.search-history {
    margin-top: 16px;
}
.search-history h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}
.search-history-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.search-history-tag {
    padding: 4px 12px;
    border-radius: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition);
    color: var(--text-secondary);
}
.search-history-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.search-result-count {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

/* ====== Play Page ====== */
.play-page { max-width: 900px; margin: 0 auto; }
.video-player-wrapper {
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 16px;
    position: relative;
}
.video-player-wrapper video {
    width: 100%;
    display: block;
    max-height: 500px;
}
.player-placeholder {
    background: #000;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 240px;
    font-size: 16px;
    text-align: center;
    padding: 40px;
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.episode-bar {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 8px 0 16px;
    -webkit-overflow-scrolling: touch;
}
.episode-btn {
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    cursor: pointer;
    font-size: 13px;
    white-space: nowrap;
    transition: all var(--transition);
    color: var(--text-secondary);
    flex-shrink: 0;
}
.episode-btn:hover { border-color: var(--accent); color: var(--accent); }
.episode-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.video-info {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid var(--border-color);
}
.video-info-header {
    display: flex;
    gap: 16px;
}
.video-info-poster {
    width: 120px;
    height: 160px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    background: var(--bg-secondary);
}
.video-info-meta {
    flex: 1;
    min-width: 0;
}
.video-info-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}
.video-info-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}
.video-info-tag {
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--bg-secondary);
    font-size: 12px;
    color: var(--text-secondary);
}
.video-info-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-top: 12px;
}

/* ====== My Page ====== */
.my-section {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}
.my-section h2 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.history-list { list-style: none; }
.history-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background var(--transition);
}
.history-item:last-child { border-bottom: none; }
.history-item:hover { background: var(--bg-secondary); margin: 0 -8px; padding: 10px 8px; border-radius: var(--radius-sm); }
.history-item-poster {
    width: 48px;
    height: 64px;
    object-fit: cover;
    border-radius: 4px;
    background: var(--bg-secondary);
    flex-shrink: 0;
}
.history-item-info {
    flex: 1;
    min-width: 0;
}
.history-item-name {
    font-size: 14px;
    font-weight: 500;
}
.history-item-meta {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}
.history-empty {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-muted);
    font-size: 14px;
}

/* ====== Loading ====== */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
    font-size: 14px;
}
.loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ====== Toast ====== */
.toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    z-index: 200;
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}
.toast.show { opacity: 1; }

/* ====== Admin ====== */
.admin-page {
    padding: 20px;
    max-width: 1000px;
    margin: 0 auto;
}
.admin-page h1 {
    font-size: 24px;
    margin-bottom: 20px;
}
.admin-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}
.admin-card h2 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
}
.admin-form { display: flex; flex-direction: column; gap: 12px; }
.admin-form label { font-size: 13px; font-weight: 500; }
.admin-form input, .admin-form select, .admin-form textarea {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
}
.admin-form input:focus, .admin-form select:focus, .admin-form textarea:focus {
    border-color: var(--accent);
}
.admin-form textarea { min-height: 80px; resize: vertical; }
.admin-form-row { display: flex; gap: 12px; }
.admin-form-row > * { flex: 1; }

.btn {
    padding: 8px 20px;
    border-radius: 6px;
    border: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { opacity: 0.85; }
.btn-secondary { background: var(--bg-secondary); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--border-color); }
.btn-sm { padding: 4px 12px; font-size: 12px; }

.source-list { list-style: none; }
.source-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}
.source-item:last-child { border-bottom: none; }
.source-item-info { flex: 1; }
.source-item-name { font-weight: 500; font-size: 14px; }
.source-item-url { font-size: 12px; color: var(--text-secondary); word-break: break-all; }
.source-item-meta { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.source-item-actions { display: flex; gap: 6px; flex-shrink: 0; }
.source-item .badge {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 11px;
    margin-left: 6px;
}
.badge-enabled { background: var(--success); color: white; }
.badge-disabled { background: var(--text-muted); color: white; }

.sync-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 13px;
}
.sync-status.running { background: var(--accent-light); color: var(--accent); }
.sync-status.idle { background: var(--bg-secondary); color: var(--text-secondary); }
.sync-progress { font-weight: 500; }

.log-area {
    background: #1d1d1f;
    color: #34c759;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    padding: 12px;
    border-radius: 6px;
    max-height: 300px;
    overflow-y: auto;
    line-height: 1.5;
}
.log-area div { padding: 1px 0; }
.log-area::-webkit-scrollbar { width: 4px; }
.log-area::-webkit-scrollbar-thumb { background: #48484a; border-radius: 2px; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
}
.stat-card {
    text-align: center;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}
.stat-value { font-size: 28px; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* ====== Responsive ====== */
@media (max-width: 600px) {
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .video-info-header {
        flex-direction: column;
    }
    .video-info-poster {
        width: 100%;
        height: 200px;
    }
    .navbar-nav .nav-item {
        padding: 6px 10px;
        font-size: 13px;
    }
    .login-box {
        padding: 24px;
    }
}