/* Блок "Альбом мероприятия" в карточке события (над описанием).
 *
 * Разметка - templates/event_detail.html, данные - _event_album_preview()
 * в yfg/blueprints/events.py. Мозаика: обложка альбома крупной плиткой,
 * остальные объекты - квадратами; на последней плитке при нехватке места
 * показывается "+N смотреть все".
 */

.event-album {
    position: relative;
    margin-bottom: 30px;
    padding: 26px 30px 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

/* Мягкое цветное свечение в углу - блок должен читаться как "фотографии",
   а не как обычная текстовая секция. */
.event-album::before {
    content: '';
    position: absolute;
    top: -140px;
    right: -120px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: var(--gradient-main);
    opacity: .10;
    filter: blur(6px);
    pointer-events: none;
}

.event-album-head {
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}

.event-album-heading {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    min-width: 0;
}

.event-album-icon {
    flex: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: var(--gradient-main);
    color: #fff;
    font-size: 19px;
    box-shadow: 0 10px 22px -12px rgba(124, 58, 237, .8);
}

.event-album-titles { min-width: 0; }

.event-album h2 {
    font-size: 22px;
    line-height: 1.25;
    color: var(--text-primary);
    margin: 0 0 4px;
}

.event-album-caption {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.event-album-caption a {
    color: inherit;
    font-weight: 600;
    text-decoration: none;
}

.event-album-caption a:hover { color: var(--color-primary-text); text-decoration: underline; }

.event-album-dot { margin: 0 6px; color: var(--text-muted); }

.event-album-description {
    margin: 6px 0 0;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.event-album-link {
    flex: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 16px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: border-color .2s, color .2s, transform .2s, background-color .2s;
}

.event-album-link i { font-size: 12px; transition: transform .2s; }

.event-album-link:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-text);
    transform: translateY(-1px);
}

.event-album-link:hover i { transform: translateX(3px); }

/* ---------- мозаика ---------- */

.event-album-mosaic {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.event-album-tile {
    position: relative;
    display: block;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    border-radius: 14px;
    background: var(--bg-hover);
    border: 1px solid var(--border-light);
    text-decoration: none;
    isolation: isolate;
}

.event-album-tile--cover {
    grid-column: span 2;
    grid-row: span 2;
    aspect-ratio: auto;
    min-height: 200px;
}

/* Раскладка под число объектов: без обложки или при 3-4 плитках
   мозаика не должна оставлять дыр. */
.event-album-mosaic[data-count="1"] { grid-template-columns: minmax(0, 1fr); }
.event-album-mosaic[data-count="1"] .event-album-tile { aspect-ratio: 16 / 7; }

.event-album-mosaic[data-count="2"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.event-album-mosaic[data-count="2"] .event-album-tile { aspect-ratio: 4 / 3; }

.event-album-mosaic[data-cover="0"] .event-album-tile { aspect-ratio: 4 / 3; }

.event-album-mosaic[data-count="3"][data-cover="1"] .event-album-tile:nth-child(n+2) {
    grid-column: span 2;
    aspect-ratio: auto;
}

.event-album-mosaic[data-count="4"][data-cover="1"] .event-album-tile:nth-child(2) {
    grid-column: span 2;
    aspect-ratio: auto;
}

.event-album-tile__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .45s cubic-bezier(.2, .7, .3, 1);
}

.event-album-tile:hover .event-album-tile__img,
.event-album-tile:focus-visible .event-album-tile__img { transform: scale(1.06); }

.event-album-tile__img--broken { object-fit: contain; padding: 18px; }

.event-album-tile__placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    min-height: 120px;
    font-size: 30px;
    color: var(--text-muted);
    background: var(--bg-hover);
}

.event-album-tile__caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 26px 12px 10px;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.3;
    color: #fff;
    text-shadow: 0 1px 6px rgba(0, 0, 0, .55);
    background: linear-gradient(to top, rgba(12, 8, 24, .78), rgba(12, 8, 24, 0));
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity .25s, transform .25s;
}

.event-album-tile:hover .event-album-tile__caption,
.event-album-tile:focus-visible .event-album-tile__caption {
    opacity: 1;
    transform: translateY(0);
}

.event-album-chip {
    position: absolute;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(17, 12, 32, .62);
    backdrop-filter: blur(6px);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .2px;
}

.event-album-chip { top: 10px; right: 10px; }

.event-album-chip--cover { left: 10px; right: auto; background: rgba(124, 58, 237, .82); }
.event-album-chip--video { background: rgba(17, 12, 32, .72); }

.event-album-tile--more .event-album-tile__img { filter: brightness(.45) saturate(.9); }

.event-album-more {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    color: #fff;
    text-align: center;
}

.event-album-more strong { font-size: 28px; line-height: 1; text-shadow: 0 2px 10px rgba(0, 0, 0, .5); }
.event-album-more small { font-size: 12px; opacity: .9; }

.event-album-empty {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
    padding: 16px 18px;
    border: 1px dashed var(--border-color);
    border-radius: 14px;
    color: var(--text-muted);
    font-size: 14px;
}

.event-album-empty i { font-size: 18px; color: var(--color-primary); }
.event-album-empty a { color: var(--color-primary-text); font-weight: 600; }

/* ---------- адаптив ---------- */

@media (max-width: 900px) {
    .event-album { padding: 22px 20px 24px; }
    .event-album-head { flex-direction: column; align-items: stretch; gap: 14px; }
    .event-album-link { align-self: flex-start; }
    .event-album-mosaic { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .event-album-tile--cover { grid-column: span 2; grid-row: span 2; }
    .event-album-mosaic[data-count="3"][data-cover="1"] .event-album-tile:nth-child(n+2),
    .event-album-mosaic[data-count="4"][data-cover="1"] .event-album-tile:nth-child(2) {
        grid-column: auto;
        aspect-ratio: 1 / 1;
    }
}

@media (max-width: 560px) {
    .event-album h2 { font-size: 19px; }
    .event-album-mosaic[data-count="3"][data-cover="1"] .event-album-tile:nth-child(n+2),
    .event-album-mosaic[data-count="4"][data-cover="1"] .event-album-tile:nth-child(2) {
        grid-column: span 2;
    }
}

@media (prefers-reduced-motion: reduce) {
    .event-album-tile__img,
    .event-album-tile__caption,
    .event-album-link,
    .event-album-link i { transition: none; }
    .event-album-tile:hover .event-album-tile__img { transform: none; }
}

/* Класс .event-album-tile__img--broken оставлен для совместимости с
   onerror-подстановкой заглушки в разметке. */