/* Collections: grid of collection cards */

/* Геометрия reference: компактная сетка, gap 20px */
.collection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-5);
}

.collection-card {
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: clip;
    background: var(--card-bg);
    border: var(--card-border);
    border-radius: var(--card-radius);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    text-decoration: none;
    color: var(--color-text);
    contain: layout style;
    box-shadow: var(--shadow-sm);
}

.collection-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-card), 0 0 0 1px var(--color-accent-dim), 0 0 20px var(--color-accent-glow);
    color: var(--color-text);
}

.collection-card__cover {
    aspect-ratio: 16 / 9;
    overflow: clip;
    position: relative;
    background: linear-gradient(145deg, var(--color-surface-hover), var(--color-surface));
}

.collection-card__fallback {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    background: linear-gradient(145deg,
        hsl(var(--card-hue, 30), 30%, 10%),
        hsl(calc(var(--card-hue, 30) + 40), 20%, 6%)
    );
    color: hsla(var(--card-hue, 30), 50%, 74%, 0.95);
    transition: opacity var(--transition-fast), transform var(--transition-slow);
    position: relative;
    overflow: clip;
}

.collection-card__fallback::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 70% 20%, hsla(var(--card-hue, 30), 50%, 50%, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.collection-card:hover .collection-card__fallback {
    opacity: 1;
    transform: scale(1.05);
}

.collection-card__fallback-icon {
    opacity: 0.75;
    position: relative;
    z-index: var(--z-raised);
}

.collection-card__fallback-label {
    font-size: var(--text-lg);
    font-weight: 800;
    font-family: var(--font-display);
    letter-spacing: var(--tracking-tight);
    opacity: 0.9;
    position: relative;
    z-index: var(--z-raised);
}

.collection-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.collection-card:hover .collection-card__image {
    transform: scale(1.05);
}

.collection-card__body {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-5);
}

.collection-card__name {
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: 1.4;
    transition: color var(--transition-fast);
}

.collection-card:hover .collection-card__name {
    color: var(--color-accent);
}

.collection-card__count {
    color: var(--color-text-dim);
    font-size: var(--text-xs);
}

/* ---------- Collection hero (detail page header) ---------- */

.collection-hero {
    display: flex;
    gap: var(--space-6);
    align-items: flex-start;
    margin-bottom: var(--space-6);
    padding: var(--space-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: clip;
    box-shadow: var(--shadow-sm), 0 0 20px var(--color-accent-glow);
}

.collection-hero__image {
    width: 240px;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.collection-hero__body {
    flex: 1;
    min-width: 0;
}

.collection-hero__description {
    margin-top: var(--space-3);
    max-width: 62ch;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    line-height: 1.7;
}

.hero__label {
    margin-bottom: var(--space-2);
    color: var(--color-accent);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

@media (max-width: 720px) {
    .collection-hero {
        flex-direction: column;
        gap: var(--space-4);
        padding: var(--space-4);
    }

    .collection-hero__image {
        width: 100%;
        max-height: 200px;
    }
}

@media (max-width: 560px) {
    .collection-grid {
        grid-template-columns: 1fr;
    }
}