/* ==========================================================================
   collage.css — floating, mouse-reactive project collage
   Items are absolutely placed (newest higher, older lower); collage.js drives
   the entry "wind" animation, pointer parallax and a gentle idle float.
   Hover reveals the category + title + description. Mobile falls back to a
   clean 2-column grid.
   ========================================================================== */

.collage {
  position: relative;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  height: clamp(600px, 82vh, 860px);
}
.collage--mini { height: clamp(400px, 54vh, 500px); }

.collage-item {
  position: absolute;
  width: var(--w, 180px);
  opacity: 0;                 /* revealed by collage.js (or fallbacks below) */
  transform: translate3d(0, 0, 0);
  will-change: transform, opacity;
  text-decoration: none;
  color: inherit;
  z-index: 1;
}

.collage-item__media {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: var(--surface-2);
  box-shadow: var(--shadow-md);
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s ease, filter 0.3s ease;
}
.collage-item[data-ratio="wide"] .collage-item__media { aspect-ratio: 4 / 3; }
.collage-item[data-ratio="square"] .collage-item__media { aspect-ratio: 1 / 1; }
.collage-item__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

/* Bring the hovered card forward and dim the rest for focus */
.collage-item:hover,
.collage-item:focus-visible { z-index: 30; outline: none; }
.collage-item:hover .collage-item__media,
.collage-item:focus-visible .collage-item__media {
  transform: scale(1.07) translateY(-5px);
  box-shadow: var(--shadow-lg);
}
.collage:hover .collage-item:not(:hover) .collage-item__media { filter: brightness(0.72) saturate(0.85); }

/* Caption (category + title + description) */
.collage-item__meta {
  position: absolute;
  left: 2px;
  top: calc(100% + 8px);
  width: max(100%, 190px);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}
.collage-item:hover .collage-item__meta,
.collage-item:focus-visible .collage-item__meta { opacity: 1; transform: none; }
.collage-item__cat {
  display: block;
  font-family: var(--font-label);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-700);
}
:root[data-theme="dark"] .collage-item__cat { color: var(--cyan-400); }
.collage-item__title {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  margin-top: 3px;
}
.collage-item__desc {
  display: block;
  font-size: 0.72rem;
  line-height: 1.4;
  color: var(--text-muted);
  margin-top: 3px;
  max-width: 230px;
}

/* Bottom hint (index) */
.collage-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-family: var(--font-label);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.collage-hint__arrow {
  width: 22px; height: 22px;
  color: var(--blue-500);
  animation: collage-hint-bob 1.8s ease-in-out infinite;
}
@keyframes collage-hint-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(5px); } }

/* Reduced motion — no float/parallax, just show the pieces in place */
@media (prefers-reduced-motion: reduce) {
  .collage-item { opacity: 1; }
  .collage-hint__arrow { animation: none; }
}

/* Mobile / small screens — clean static grid with visible captions */
@media (max-width: 760px) {
  .collage,
  .collage--mini {
    position: static;
    height: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px 16px;
  }
  .collage-item {
    position: static !important;
    width: auto !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .collage:hover .collage-item:not(:hover) .collage-item__media { filter: none; }
  .collage-item__meta {
    position: static;
    opacity: 1;
    transform: none;
    width: auto;
    margin-top: 8px;
  }
}

/* No-JS fallback */
.no-js .collage-item { opacity: 1; }