:root {
    --bg-color: var(--tg-theme-bg-color, #ffffff);
    --secondary-bg: var(--tg-theme-secondary-bg-color, #f4f4f7);
    --text-color: var(--tg-theme-text-color, #000000);
    --hint-color: var(--tg-theme-hint-color, #999999);
    --link-color: var(--tg-theme-link-color, #2481cc);
    --button-color: var(--tg-theme-button-color, #2481cc);
    --button-text: var(--tg-theme-button-text-color, #ffffff);
    --card-bg: var(--tg-theme-bg-color, #ffffff);
}

body {
    background-color: var(--secondary-bg);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    -webkit-user-select: none;
    user-select: none;
}

header {
    padding: 16px;
    background-color: var(--bg-color);
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

h1 {
    font-size: 18px;
    margin: 0;
    font-weight: 700;
}

.tabs {
    display: flex;
    padding: 12px;
    gap: 8px;
    background-color: var(--bg-color);
    margin-bottom: 8px;
}

.tab-btn {
    flex: 1;
    padding: 8px;
    border: none;
    border-radius: 8px;
    background-color: var(--secondary-bg);
    color: var(--text-color);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.tab-btn.active {
    background-color: var(--button-color);
    color: var(--button-text);
}

.list {
    padding: 12px;
}

.video-item {
    padding: 12px;
    background-color: var(--card-bg);
    border-radius: 12px;
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    border: 1px solid rgba(0,0,0,0.03);
    text-decoration: none;
    color: inherit;
}

.video-item:active {
    background-color: rgba(0,0,0,0.05);
}

.thumbnail-container {
    flex-shrink: 0;
    width: 120px;
    aspect-ratio: 16/9;
    background-color: var(--secondary-bg);
    border-radius: 8px;
    overflow: hidden;
}

.thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.video-title {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    font-size: 12px;
    color: var(--hint-color);
}

.channel-name {
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.loading, .empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--hint-color);
}

#load-more-btn {
    background: var(--button-color);
    color: var(--button-text);
    border: none;
    border-radius: 12px;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
}

.hidden {
    display: none !important;
}

.admin-card {
    background-color: var(--card-bg);
    padding: 16px;
    border-radius: 16px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.admin-card h3 {
    margin: 0 0 12px 0;
    font-size: 16px;
}

.admin-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.action-btn {
    padding: 14px;
    border: none;
    border-radius: 12px;
    background-color: var(--button-color);
    color: var(--button-text);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

.action-btn.danger {
    background-color: #ff3b30;
}

.log-container {
    margin-top: 16px;
    padding: 12px;
    background-color: #000;
    color: #00ff00;
    font-family: monospace;
    font-size: 12px;
    border-radius: 8px;
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 14px;
}