/* collection.css · Section 04, The collection. Owned with assets/js/collection.js. See BRIEF.md. */

@property --tint { syntax: "<color>"; inherits: true; initial-value: #F2E2CB; }
@property --accent { syntax: "<color>"; inherits: true; initial-value: #B8732E; }

.collection {
  --tint: #F2E2CB;
  --accent: #B8732E;
  --accent-ink: #7A4A22;
  --accent-ink: color-mix(in srgb, var(--accent) 62%, var(--ink));
  position: relative;
  padding-block: var(--section);
  transition: --tint 900ms var(--ease-flow), --accent 900ms var(--ease-flow);
}

/* ---------------------------------------------------------------- head */
.collection__head {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: 24px;
  row-gap: clamp(18px, 3vh, 30px);
  align-items: end;
}
.collection__head .label { grid-column: 1 / -1; }
.collection__head .h2 { grid-column: 1 / span 7; max-width: 12ch; }
.collection__head .lede { grid-column: 9 / span 4; padding-bottom: 0.4em; }

/* ---------------------------------------------------------------- stage */
.collection__stage {
  width: 100%;
  max-width: calc(var(--max) + 2 * var(--gutter));
  margin: clamp(44px, 8vh, 96px) auto 0;
  padding-inline: var(--gutter);
  display: grid;
  grid-template-columns: minmax(150px, 0.8fr) minmax(0, 46vw) minmax(260px, 1.05fr);
  column-gap: clamp(24px, 3.4vw, 60px);
  align-items: center;
}

/* Index: the five pieces, a quiet list */
.collection__index { display: flex; flex-direction: column; align-self: center; }
.collection__index li { border-top: 1px solid var(--line); }
.collection__index li:last-child { border-bottom: 1px solid var(--line); }
.collection__pick {
  position: relative;
  display: flex; align-items: baseline; gap: 14px;
  width: 100%;
  padding: 15px 0 14px;
  text-align: left;
  color: var(--ink-3);
  transition: color var(--t-snap) var(--ease-snap);
}
.collection__pick-no {
  font-family: var(--f-ui); font-weight: 500;
  font-size: 0.68rem; letter-spacing: 0.16em;
  font-variant-numeric: tabular-nums;
  color: inherit;
  transition: color var(--t-snap) var(--ease-snap);
}
.collection__pick-name {
  font-family: var(--f-display); font-weight: 300;
  font-size: clamp(1.35rem, 1.75vw, 1.9rem); line-height: 1.1; letter-spacing: -0.02em;
  font-variation-settings: "SOFT" 0, "WONK" 0;
  transition: transform var(--t-base) var(--ease-set);
}
.collection__pick::after {
  content: ""; position: absolute; right: 2px; top: 50%;
  width: 7px; height: 7px; margin-top: -3.5px; border-radius: 50%;
  background: var(--saffron);
  transform: scale(0);
  transition: transform var(--t-base) var(--ease-set);
}
.collection__pick::before {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1.5px;
  background: var(--accent-ink);
  transform: scaleX(var(--tour, 0)); transform-origin: left;
  transition: transform 140ms linear, opacity var(--t-base) var(--ease-flow);
  opacity: 0;
}
.collection__pick.is-active::before { opacity: 0.85; }
.collection:not(.is-touring) .collection__pick.is-active::before { opacity: 0.3; }
.is-tour-off .collection__pick::before { opacity: 0 !important; }
.is-nogl .collection__pick::before { display: none; }
.collection__pick:hover { color: var(--ink); }
.collection__pick.is-active { color: var(--ink); }
.collection__pick.is-active .collection__pick-no { color: var(--saffron-ink); }
.collection__pick.is-active .collection__pick-name { transform: translateX(8px); font-style: italic; font-variation-settings: "SOFT" 0, "WONK" 1; }
.collection__pick.is-active::after { transform: scale(1); }

/* Viewport: the studio sweep the pieces sit in */
.collection__viewport {
  position: relative;
  height: min(72vh, 800px);
  min-height: 500px;
  border-radius: var(--radius-stage);
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(90% 70% at 50% 34%, color-mix(in srgb, var(--tint) 22%, #FFFDF9) 0%, transparent 72%),
    linear-gradient(180deg, color-mix(in srgb, var(--tint) 45%, #FFFDF9) 0%, color-mix(in srgb, var(--tint) 88%, #FFFDF9) 58%, var(--tint) 100%);
  box-shadow: inset 0 0 0 1px var(--line), 0 40px 80px -48px rgb(60 32 18 / 0.35);
}
.collection__ghost {
  position: absolute; inset: 0; z-index: 0;
  display: grid; place-items: center;
  padding-bottom: 12%;
  font-family: var(--f-display); font-style: italic; font-weight: 300;
  font-size: clamp(13rem, 30vw, 34rem); line-height: 1; letter-spacing: -0.07em;
  font-variation-settings: "SOFT" 60, "WONK" 1;
  color: color-mix(in srgb, var(--accent) 15%, transparent);
  pointer-events: none; user-select: none;
}
.collection__canvas {
  position: absolute; inset: 0; z-index: 1;
  width: 100%; height: 100%;
  touch-action: pan-y;
  outline: none;
  opacity: 0;
  transition: opacity 600ms var(--ease-flow);
}
.collection__canvas.is-ready { opacity: 1; }
.collection__canvas:focus-visible { box-shadow: inset 0 0 0 1.5px var(--saffron-ink); border-radius: var(--radius-stage); }
.is-nogl .collection__canvas { display: none; }

.collection__leaders,
.collection__labels {
  position: absolute; inset: 0; z-index: 2;
  width: 100%; height: 100%;
  pointer-events: none;
  opacity: 0;
  transition: opacity 600ms var(--ease-flow);
}
.collection__leaders { overflow: visible; }
.collection__leaders.is-on, .collection__labels.is-on { opacity: 1; }
.clead { fill: none; stroke: var(--ink); stroke-width: 1; opacity: 0.7; vector-effect: non-scaling-stroke; }
.cdot { fill: var(--ivory); stroke: var(--ink); stroke-width: 1; }
.clabel {
  position: absolute; left: 0; top: 0;
  display: flex; flex-direction: column; gap: 3px;
  width: var(--label-w, 176px);
  will-change: transform;
}
.clabel__k {
  font-family: var(--f-ui); font-weight: 500;
  font-size: 0.6rem; line-height: 1.2; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--accent-ink);
}
.clabel__v {
  font-family: var(--f-display); font-weight: 400;
  font-size: 1.02rem; line-height: 1.2; letter-spacing: -0.005em;
  color: var(--ink);
}

.collection__hint {
  position: absolute; left: 50%; bottom: 22px; z-index: 3;
  transform: translateX(-50%);
  color: var(--ink-2);
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-flow);
  white-space: nowrap;
}
.collection__hint::before {
  content: ""; width: 22px; height: 1px; background: currentColor; opacity: 0.6;
}
.is-gl .collection__hint { opacity: 1; }
.collection__hint.is-hidden, .is-cut .collection__hint, .is-nogl .collection__hint { opacity: 0; }

/* The tour: a small control in the corner, its ring showing how far this piece has come */
.collection__tour {
  position: absolute; right: 16px; top: 16px; z-index: 3;
  display: inline-flex; align-items: center; gap: 9px;
  min-height: 38px; padding: 0 14px 0 8px;
  border-radius: 999px;
  background: rgb(255 251 245 / 0.66);
  box-shadow: inset 0 0 0 1px var(--line);
  font-family: var(--f-ui); font-weight: 500; font-size: 0.64rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-2);
  transition: background var(--t-snap) var(--ease-snap), color var(--t-snap) var(--ease-snap);
}
.collection__tour:hover { background: #FFFBF5; color: var(--ink); }
.collection__tour-icon { flex: none; overflow: visible; transform: rotate(-90deg); }
.collection__tour-track { fill: none; stroke: var(--line-2); stroke-width: 1.2; }
.collection__tour-ring {
  fill: none; stroke: var(--accent-ink); stroke-width: 1.6; stroke-linecap: round;
  stroke-dasharray: 1; stroke-dashoffset: 1;
  transition: stroke-dashoffset 140ms linear, opacity var(--t-base) var(--ease-flow);
}
.collection__tour-pause, .collection__tour-play { transform: rotate(90deg); transform-origin: 11px 11px; }
.collection__tour-pause { fill: none; stroke: var(--ink); stroke-width: 1.6; stroke-linecap: round; }
.collection__tour-play { fill: var(--ink); display: none; }
.is-tour-off .collection__tour-pause { display: none; }
.is-tour-off .collection__tour-play { display: block; }
.is-tour-off .collection__tour-ring { opacity: 0; }
.is-nogl .collection__tour { display: none; }

/* Detail */
.collection__detail { align-self: center; max-width: 400px; }
.collection__no { color: var(--saffron-ink); }
.collection__name {
  margin-top: clamp(12px, 2vh, 20px);
  font-size: clamp(3rem, 5vw, 5.4rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
  font-weight: 300;
  color: var(--ink);
  white-space: nowrap;
}
.collection__char { display: inline-block; font-variation-settings: "SOFT" 0, "WONK" 0; }
.collection__ar {
  margin-top: 8px;
  font-family: var(--f-ar);
  font-size: clamp(1.6rem, 2vw, 2.1rem); line-height: 1.3;
  color: var(--accent-ink);
}
.collection__line {
  margin-top: 14px;
  font-family: var(--f-display); font-style: italic; font-weight: 350;
  font-size: clamp(1.15rem, 1.35vw, 1.35rem); line-height: 1.35;
  font-variation-settings: "WONK" 1;
  color: var(--ink);
}
.collection__desc {
  margin-top: 14px;
  font-size: 0.98rem; line-height: 1.7;
  color: var(--ink-2);
  max-width: 40ch;
}
.collection__layers { margin-top: 26px; border-top: 1px solid var(--line-2); }
.collection__layers div {
  display: grid; grid-template-columns: 92px minmax(0, 1fr); align-items: baseline; gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}
.collection__layers dt {
  font-family: var(--f-ui); font-weight: 500;
  font-size: 0.64rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-2);
}
.collection__layers dd { margin: 0; font-family: var(--f-display); font-size: 1.04rem; line-height: 1.35; color: var(--ink); }
.collection__controls {
  margin-top: 30px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 16px;
}
.collection__cut { flex: none; }
.collection__arrows { display: flex; gap: 10px; }
.collection__cut .btn__icon svg { transition: transform var(--t-base) var(--ease-set); }
.is-cut .collection__cut .btn__icon svg { transform: rotate(90deg); }
.collection__cut:disabled { opacity: 0.5; pointer-events: none; }

/* ---------------------------------------------------------------- tablet and phone */
@media (max-width: 1180px) {
  .collection__stage { grid-template-columns: minmax(130px, 0.7fr) minmax(0, 1.5fr) minmax(240px, 1fr); }
}

@media (max-width: 900px) {
  .collection__head .h2 { grid-column: 1 / -1; }
  .collection__head .lede { grid-column: 1 / -1; }

  .collection__stage { grid-template-columns: minmax(0, 1fr); row-gap: 22px; }
  .collection__index {
    order: 1;
    flex-direction: row; gap: 8px;
    margin-inline: calc(-1 * var(--gutter));
    padding: 2px var(--gutter);
    overflow-x: auto; overscroll-behavior-x: contain;
    scrollbar-width: none;
    scroll-snap-type: x proximity;
  }
  .collection__index::-webkit-scrollbar { display: none; }
  .collection__index li, .collection__index li:last-child { border: 0; flex: none; scroll-snap-align: start; }
  .collection__pick {
    width: auto; min-height: 44px;
    padding: 8px 18px 8px 14px;
    align-items: center; gap: 10px;
    border: 1px solid var(--line-2); border-radius: 999px;
    white-space: nowrap;
  }
  .collection__pick::after { display: none; }
  .collection__pick::before { left: 16px; right: 16px; bottom: 6px; background: var(--saffron-hi); }
  .collection__tour { right: 12px; top: 12px; }
  .collection__pick-name { font-size: 1.1rem; }
  .collection__pick.is-active { background: var(--ink); border-color: var(--ink); color: var(--ivory); }
  .collection__pick.is-active .collection__pick-no { color: var(--saffron-hi); }
  .collection__pick.is-active .collection__pick-name { transform: none; }

  .collection__viewport { order: 2; height: 56vh; height: 56svh; min-height: 360px; max-height: 600px; }
  /* Controls sit right under the piece on phones, so cutting it never scrolls it out of view. */
  .collection__detail { order: 3; max-width: none; display: flex; flex-direction: column; }
  .collection__controls { order: -1; margin: 0 0 26px; }
  .collection__name { font-size: clamp(2.8rem, 13vw, 4.2rem); }
  .collection__ghost { font-size: clamp(11rem, 58vw, 20rem); }
  .clabel { --label-w: 128px; }
  .clabel__v { font-size: 0.9rem; }
}

@media (max-width: 420px) {
  .collection__controls { flex-wrap: wrap; }
  .collection__layers div { grid-template-columns: 78px minmax(0, 1fr); }
}