/* ============================================================
   v3 — Index / Archive
   Filter by type · Text ⇄ Image · INFINITE 2D grid (square cells)
   black square → expands to image on load · big gaps
   ============================================================ */

body { background: var(--paper); color: var(--ink); overflow: hidden; }
.idx { height: 100svh; display: flex; flex-direction: column; }

/* —— View toggle (Grid/List) + discipline filters grouped left; zoom + count right —— */
.idx__bar {
  display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: baseline; justify-content: space-between;
  padding: clamp(4.5rem, 4rem + 2vw, 6rem) var(--margin) clamp(1rem, 0.8rem + 1vw, 1.6rem);
}
.idx__left { display: flex; align-items: center; flex-wrap: wrap; gap: clamp(0.8rem, 0.3rem + 1.2vw, 1.7rem); }
.idx__toggle { display: flex; align-items: baseline; gap: clamp(0.7rem, 0.3rem + 1.1vw, 1.6rem);
  font-family: var(--display); font-weight: 500; font-size: clamp(1.7rem, 1rem + 2.8vw, 3.4rem); letter-spacing: -0.03em; }
.idx__view { position: relative; color: var(--ink-mute); line-height: 1; transition: color 0.35s var(--ease); }
.idx__view::after { content: ""; position: absolute; left: 0; right: 0; bottom: -0.08em; height: 2px;
  background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform 0.45s var(--ease); }
.idx__view.is-on { color: var(--ink); }
.idx__view.is-on::after { transform: scaleX(1); }
.idx__view:not(.is-on):hover { color: var(--ink-soft); }

.idx__right { display: flex; align-items: baseline; gap: 1.4rem; }
.idx__count { font-family: var(--mono); font-size: var(--t-cap); color: var(--ink-mute); letter-spacing: 0.04em; }
.idx__zoom { display: flex; align-items: baseline; gap: 0.55em; font-family: var(--mono); font-size: var(--t-cap); }
.idx__zoombtn { color: var(--ink-mute); line-height: 1; padding: 0 0.12em; transition: color 0.3s ease; user-select: none; -webkit-user-select: none; }
.idx__zoombtn:hover { color: var(--ink); }
.idx__filters { display: flex; flex-wrap: nowrap; gap: 0.4em; align-items: center; }
.idx__filters[hidden] { display: none; }
.idx__filter { font-family: var(--mono); font-size: calc(var(--t-cap) * 0.82); text-transform: uppercase; letter-spacing: 0.03em; line-height: 1;
  color: var(--ink-mute); border: 1px solid var(--line); border-radius: 999px; padding: 0.5em 0.85em; white-space: nowrap;
  transition: color 0.22s ease, background 0.22s ease, border-color 0.22s ease; }
.idx__filter.is-on { color: var(--paper); background: var(--ink); border-color: var(--ink); }
.idx__filter:not(.is-on):hover { color: var(--ink); border-color: var(--ink-mute); }
@media (max-width: 760px) { .idx__filters { flex-wrap: wrap; } }

/* —— IMAGE MODE: infinite 2D plane ——————————————————————— */
.idx__plane { position: relative; flex: 1; overflow: hidden; cursor: grab; touch-action: none;
  user-select: none; -webkit-user-select: none; }
.idx__plane img, .idx__plane a { -webkit-user-drag: none; user-select: none; }
.idx__plane.is-drag { cursor: grabbing; }
.idx__field { position: absolute; top: 0; left: 0; will-change: transform; }
.idx__block { position: absolute; display: grid; }

/* cells scale on a radial ramp from screen-centre, driven per-frame in JS
   (continuous → no blinking). Default full-size so touch / reduced-motion /
   no-JS simply see the grid. */
.cell { display: block; transform: scale(1); transform-origin: center; }
.cell__media { position: relative; overflow: hidden; background: transparent; aspect-ratio: 1 / 1; border-radius: 6px;
  transition: background-color 0.5s var(--ease-out-expo); }
.cell__media:not(.is-loaded) { background: #0b0b0b; }   /* dark placeholder only until loaded — keeps it from bleeding through the rounded corners */
.cell__media img {
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0; filter: grayscale(0.12);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.9s var(--ease), filter 0.5s ease;
}
.cell__media.is-loaded img { opacity: 1; }
.cell:hover .cell__media.is-loaded img { transform: scale(1.05); filter: none; }
@media (prefers-reduced-motion: reduce){ .cell { transform: none; } }
.cell__row { display: flex; justify-content: space-between; gap: 0.6rem; margin-top: 0.55rem;
  font-family: var(--mono); font-size: 0.64rem; text-transform: uppercase; letter-spacing: 0.02em; color: var(--ink-soft); }
.cell__num { color: var(--ink-mute); }
.cell:hover .cell__name { color: var(--ink); }

.idx__hint { position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); z-index: 5;
  font-family: var(--mono); font-size: var(--t-cap); text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-mute); pointer-events: none; transition: opacity 0.6s ease; }

/* —— TEXT MODE: archival rows ————————————————————————————— */
/* sort header — tiny sort toggles above the columns (text mode) */
.idx__sorthead { display: grid; grid-template-columns: 3rem minmax(0, 2.4fr) minmax(0, 1.3fr) 5rem; align-items: baseline; gap: 1.5rem;
  padding: 0 var(--margin) 0.7rem; margin-bottom: 0.4rem;
  font-family: var(--mono); font-size: var(--t-cap); text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-mute); }
.idx__sorthead[hidden] { display: none; }
.sh-btn { display: inline-flex; align-items: center; gap: 0.45em; color: var(--ink-mute); transition: color 0.3s ease; }
.sh-btn:hover, .sh-btn.is-active { color: var(--ink); }
.sh-btn .sh-ico { font-size: 0.85em; opacity: 0.55; transition: opacity 0.3s ease; }
.sh-btn.is-active .sh-ico { opacity: 1; }
.idx__sorthead > :last-child { justify-self: end; }
@media (max-width: 680px){ .idx__sorthead { display: none; } }

.idx__list { flex: 1; overflow-y: auto; list-style: none; padding: 0 var(--margin) 3rem; }
.idx__list[hidden] { display: none; }
.arow { display: grid; grid-template-columns: 3rem minmax(0, 2.4fr) minmax(0, 1.3fr) 5rem;
  align-items: baseline; gap: 1.5rem; padding: clamp(0.7rem, 0.5rem + 0.6vw, 1.1rem) 0;
  border-top: 1px solid var(--line); transition: padding-left 0.4s var(--ease); }
.idx__list .arow:last-child { border-bottom: 1px solid var(--line); }
.arow.is-hidden { display: none; }
.arow:hover { padding-left: 0.6rem; }
.arow__num { font-family: var(--mono); font-size: var(--t-cap); color: var(--ink-mute); }
.arow__title { font-family: var(--display); font-weight: 500; font-size: clamp(1.1rem, 0.9rem + 0.9vw, 1.7rem); letter-spacing: -0.01em; }
.arow__type { font-family: var(--mono); font-size: var(--t-cap); text-transform: uppercase; letter-spacing: 0.03em; color: var(--ink-soft); }
.arow__year { font-family: var(--mono); font-size: var(--t-cap); color: var(--ink-mute); text-align: right; }
@media (max-width: 680px){
  .arow { grid-template-columns: 2rem 1fr 4rem; }
  .arow__type { grid-column: 2; grid-row: 2; }
}

/* outer = cursor-follow point (positioned by JS); inner = the thumbnail */
.idx__preview { position: fixed; top: 0; left: 0; z-index: 60; pointer-events: none; will-change: transform;
  transform: translate3d(-9999px, 0, 0); }
.idx__preview__img { position: absolute; left: 36px; top: 0; width: clamp(180px, 16vw, 240px); aspect-ratio: 1/1;
  background-size: cover; background-position: center; border-radius: 9px; box-shadow: 0 24px 60px rgba(0,0,0,0.22);
  opacity: 0; transform: translateY(-50%) scale(0.9); transform-origin: left center;
  transition: opacity 0.4s var(--ease-out-expo), transform 0.55s var(--ease-out-expo); }
.idx__preview.show .idx__preview__img { opacity: 1; transform: translateY(-50%) scale(1); }
@media (hover: none), (pointer: coarse){ .idx__preview { display: none; } }