/* Photo-led service collections, adapted from Jackson's supplied SmileSet reference. */
.collection-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.collection-tile { position: relative; isolation: isolate; display: grid; place-items: center; aspect-ratio: 4 / 3; min-height: 180px; padding: 24px; overflow: hidden; border-radius: 8px; background: var(--purple-dark); color: #fff; text-align: center; }
.collection-tile img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform .25s ease; }
.collection-tile::after { content: ''; position: absolute; inset: 0; z-index: -1; background: rgba(69,16,68,.67); transition: background-color .2s ease; }
.collection-tile h3 { font-size: clamp(20px, 1.8vw, 27px); font-weight: 600; line-height: 1.25; letter-spacing: -.025em; margin: 0; color: #fff; text-wrap: balance; }
.collection-tile:hover::after { background: rgba(69,16,68,.78); }
.collection-tile:hover h3 { color: var(--mint); }
.collection-tile:hover img { transform: scale(1.035); }
.collection-tile:focus-visible { outline: 3px solid var(--purple); outline-offset: 5px; }
.collection-hub__intro { margin: 64px 0 0; }
.collection-detail .section-head h2 { margin: 0; }
@media (max-width: 1050px) { .collection-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 540px) {
 .collection-grid { gap: 12px; }
 .collection-tile { aspect-ratio: 1 / 1; min-height: 144px; padding: 16px 10px; border-radius: 6px; }
 .collection-tile h3 { font-size: clamp(17px, 4.5vw, 22px); line-height: 1.3; }
 .collection-hub__intro { margin-top: 44px; }
}
@media (max-width: 350px) { .collection-grid { grid-template-columns: 1fr; } .collection-tile { aspect-ratio: 4 / 3; } }
@media (prefers-reduced-motion: reduce) { .collection-tile img, .collection-tile::after { transition: none; } .collection-tile:hover img { transform: none; } }