:root {
    --card-radius: 20px;
    --card-shadow: 0 8px 24px rgba(0,0,0,0.05);
    --card-hover-shadow: 0 16px 36px rgba(0,0,0,0.1);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --transition: 0.25s ease;
}

/* переключатель */
.media-switcher {
    display: flex; justify-content: center; position: relative; margin-bottom: 32px;
    background: #f1f5f9; border-radius: 40px; padding: 4px;
    width: fit-content; margin-left: auto; margin-right: auto;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.08);
}
.media-switcher-btn {
    position: relative; z-index: 2; flex: 1; padding: 10px 28px; border: none;
    background: transparent; font-size: 1rem; font-weight: 500; color: #64748b;
    border-radius: 36px; cursor: pointer; transition: color var(--transition);
    display: flex; align-items: center; gap: 8px; white-space: nowrap;
}
.media-switcher-btn.active { color: #1e293b; }
.media-switcher-indicator {
    position: absolute; top: 4px; left: 4px; height: calc(100% - 8px); width: calc(50% - 4px);
    background: white; border-radius: 36px; box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s cubic-bezier(0.4, 0.0, 0.2, 1); z-index: 1;
}
.media-switcher[data-active="video"] .media-switcher-indicator { transform: translateX(100%); }

/* вкладки */
.media-tab { display: none; }
.media-tab.active { display: block; }

/* тулбар */
.media-toolbar {
    display: flex; justify-content: space-between; align-items: center; gap: 16px;
    margin-bottom: 24px; flex-wrap: wrap;
}
.search-box { position: relative; flex: 1; min-width: 220px; max-width: 400px; }
.search-box i {
    position: absolute; left: 18px; top: 50%; transform: translateY(-50%);
    color: #95a5a6; font-size: 0.9rem; pointer-events: none;
}
.search-box input {
    width: 100%; padding: 12px 20px 12px 48px; border: 1px solid #dcdde1;
    border-radius: 28px; font-size: 0.9rem; background: white;
    transition: border-color 0.2s, box-shadow 0.2s; box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}
.search-box input:focus { border-color: #3498db; box-shadow: 0 0 0 3px rgba(52,152,219,0.15); outline: none; }
.sort-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.sort-btn {
    padding: 8px 18px; border: 1px solid #dcdde1; background: white; border-radius: 28px;
    font-size: 0.85rem; font-weight: 500; color: #64748b; cursor: pointer;
    transition: all 0.2s; display: inline-flex; align-items: center; gap: 6px;
}
.sort-btn.active { background: #3498db; border-color: #3498db; color: white; }
.sort-btn:hover:not(.active) { background: #f8f9fa; border-color: #b2bec3; }

/* сетка альбомов */
.media-gallery-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 32px;
}
.media-album-card {
    background: #fff; border-radius: var(--card-radius); overflow: hidden;
    box-shadow: var(--card-shadow); cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
    display: flex; flex-direction: column; will-change: transform, box-shadow;
}
.media-album-cover { height: 260px; overflow: hidden; background: #f1f5f9; flex-shrink: 0; }
.media-album-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.media-album-card:hover .media-album-cover img { transform: scale(1.05); }
.media-album-info { padding: 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.media-album-title { font-size: 1.15rem; font-weight: 600; color: var(--text-primary); line-height: 1.35; margin: 0; word-wrap: break-word; }
.media-album-meta { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--text-secondary); margin-top: auto; }
.empty-message { text-align: center; padding: 80px 20px; font-size: 1.25rem; color: #94a3b8; }

/* сетка видео */
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.video-card {
    background: #fff; border-radius: var(--card-radius); overflow: hidden;
    box-shadow: var(--card-shadow); cursor: pointer; transition: transform var(--transition), box-shadow var(--transition);
    will-change: transform, box-shadow;
}
.video-card-thumb { width: 100%; height: 200px; object-fit: cover; background: #000; }
.video-card-body { padding: 20px; }
.video-card-title {
    font-size: 1rem; font-weight: 600; color: var(--text-primary); margin-bottom: 8px;
    line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.video-card-meta { display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 16px; }
.video-play-btn {
    display: inline-flex; align-items: center; gap: 6px; background: #3498db; color: white;
    border: none; padding: 8px 20px; border-radius: 28px; font-weight: 500; font-size: 0.9rem;
    cursor: pointer; transition: background var(--transition);
}
.video-play-btn:hover { background: #2980b9; }

/* sentinel */
.scroll-sentinel { height: 1px; width: 100%; }

/* модальное окно видео */
.video-player-modal { display: none; position: fixed; inset: 0; z-index: 6000; justify-content: center; align-items: center; }
.video-player-modal.active { display: flex; }
.video-player-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.85); backdrop-filter: blur(8px); }
.video-player-content { position: relative; width: 90%; max-width: 960px; aspect-ratio: 16/9; background: #000; border-radius: 16px; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.video-player-content iframe { width: 100%; height: 100%; }
.video-player-close { position: absolute; top: 12px; right: 16px; background: rgba(255,255,255,0.15); border: none; color: white; font-size: 1.8rem; width: 36px; height: 36px; border-radius: 50%; cursor: pointer; z-index: 10; display: flex; align-items: center; justify-content: center; transition: background 0.2s; }
.video-player-close:hover { background: rgba(255,255,255,0.3); }

/* модальное окно фото */
.album-modal { display: none; position: fixed; inset: 0; z-index: 6000; }
.album-modal.active { display: block; }
.album-modal-overlay { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.94); backdrop-filter: blur(12px); cursor: pointer; }
.album-modal-container { position: absolute; inset: 0; display: flex; flex-direction: column; color: white; font-family: 'Inter', sans-serif; }
.album-modal-topbar { display: flex; justify-content: space-between; align-items: flex-start; padding: 24px 28px 12px; background: linear-gradient(to bottom, rgba(0,0,0,0.5), transparent); z-index: 30; opacity: 1; transition: opacity 0.4s ease; }
.topbar-left { flex: 1; min-width: 0; }
.album-modal-title { font-size: 1.4rem; font-weight: 600; margin: 0; line-height: 1.25; color: white; text-shadow: 0 2px 6px rgba(0,0,0,0.6); }
.album-modal-meta { font-size: 0.85rem; color: #cbd5e1; margin: 4px 0 0; }
.topbar-right { display: flex; gap: 10px; }
.topbar-btn { background: rgba(255,255,255,0.12); border: none; color: white; width: 42px; height: 42px; border-radius: 50%; font-size: 1.1rem; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: background var(--transition), transform var(--transition); backdrop-filter: blur(8px); }
.topbar-btn:hover { background: rgba(255,255,255,0.3); transform: scale(1.05); }
.album-viewport { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; min-height: 0; padding: 0 20px; }
.album-image-area { position: relative; display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; max-height: calc(100vh - 180px); }
.album-image-area img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: 12px; box-shadow: 0 12px 32px rgba(0,0,0,0.5); transition: opacity 0.2s; }
.nav-btn { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(255,255,255,0.1); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.15); color: white; width: 44px; height: 44px; border-radius: 50%; font-size: 1.5rem; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: background var(--transition), transform var(--transition); z-index: 20; }
.nav-btn:hover { background: rgba(255,255,255,0.3); transform: translateY(-50%) scale(1.08); }
.prev-btn { left: 24px; } .next-btn { right: 24px; }
.album-info-bar { padding: 10px 28px; font-size: 0.95rem; color: #e2e8f0; display: flex; align-items: center; gap: 6px; opacity: 1; transition: opacity 0.4s ease; }
.album-thumbnails-bar { padding: 0 20px 20px; display: flex; align-items: center; gap: 12px; }
.thumbnails-scroll { display: flex; gap: 10px; overflow-x: auto; flex: 1; scrollbar-width: thin; scrollbar-color: rgba(255,255,255,0.3) transparent; padding: 4px 0; }
.thumbnails-scroll::-webkit-scrollbar { height: 4px; }
.thumbnails-scroll::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.3); border-radius: 4px; }
.album-thumbnail { width: 68px; height: 50px; object-fit: cover; border-radius: 8px; cursor: pointer; border: 2px solid transparent; transition: border-color var(--transition), opacity var(--transition); flex-shrink: 0; opacity: 0.65; }
.album-thumbnail.active { border-color: #38bdf8; opacity: 1; }

/* полноэкранный режим */
.album-modal.fullscreen .album-modal-topbar,
.album-modal.fullscreen .album-thumbnails-bar,
.album-modal.fullscreen .album-info-bar { opacity: 0; visibility: hidden; pointer-events: none; }
.album-modal.fullscreen .nav-btn { opacity: 0.35; }
.album-modal.fullscreen .album-image-area { padding: 0; }
.album-modal.fullscreen .album-image-area img { border-radius: 0; box-shadow: none; }
.album-modal.fullscreen.show-controls .album-modal-topbar,
.album-modal.fullscreen.show-controls .album-thumbnails-bar,
.album-modal.fullscreen.show-controls .album-info-bar { opacity: 1; visibility: visible; pointer-events: auto; }
.album-modal.fullscreen.show-controls .nav-btn { opacity: 1; }

/* адаптивность */
@media (max-width: 1024px) {
    .media-gallery-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
    .video-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}
@media (max-width: 768px) {
    .media-switcher { width: 100%; max-width: 320px; }
    .media-switcher-btn { padding: 8px 20px; font-size: 0.9rem; }
    .media-toolbar { flex-direction: column; align-items: stretch; }
    .search-box { max-width: none; }
    .sort-buttons { justify-content: center; }
    .media-gallery-grid { grid-template-columns: 1fr; gap: 20px; }
    .video-grid { grid-template-columns: 1fr; }
    .media-album-cover { height: 200px; }
    .media-album-info { padding: 20px; }
    .media-album-title { font-size: 1rem; }
    .video-card-thumb { height: 180px; }
    .album-modal-topbar { padding: 16px 16px 8px; }
    .album-modal-title { font-size: 1.1rem; }
    .album-image-area { padding: 0 12px; }
    .nav-btn { width: 38px; height: 38px; font-size: 1.2rem; }
    .prev-btn { left: 8px; } .next-btn { right: 8px; }
    .album-thumbnail { width: 56px; height: 42px; }
    .album-thumbnails-bar { padding: 0 12px 12px; }
    .video-player-content { width: 95%; }
}