/* ==========================================================================
   WHAT WE DO — a stage of nine morphing tiles beside an index of the six
   activities. Pointing at an activity (hover, focus or tap) rearranges the
   geometry into that activity's composition (js/work.js), and the glass
   panel over it changes to say what it is. The index rows never change
   height, so nothing jumps under the pointer.
   ========================================================================== */

.work__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: clamp(20px, 3vw, 48px);
  row-gap: 64px;
  align-items: start;
}
.work__head { grid-column: 1 / 7; }

/* ── Stage ─────────────────────────────────────────────────── */
.work__stage {
  grid-column: 1 / 7;
  grid-row: 2;
  position: sticky;
  top: 112px;
  width: min(100%, 540px);
  aspect-ratio: 1;
}
.work__stage::before {                    /* a soft lilac field behind */
  content: '';
  position: absolute;
  inset: -12%;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(185, 165, 255, .45), transparent);
}
.stage__tiles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(8px, 1vw, 12px);
  height: 100%;
}
.stage__tiles .mt.is-glass {
  background-color: rgba(255, 255, 255, .55);
  border-color: rgba(255, 255, 255, .95);
}
.stage__tiles .mt.is-line {
  background-color: transparent;
  border-color: var(--electric);
}

.stage__glass {
  position: absolute;
  right: -7%;
  bottom: -6%;
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 72%;
  padding: 22px 26px 24px;
  border-radius: 28px 28px 28px 8px;
}
.stage__num {
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--electric);
}
.stage__name {
  font-size: clamp(1.375rem, 1rem + 1vw, 2rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -.04em;
  color: var(--ink);
}
.stage__desc {
  margin-top: 4px;
  font-size: var(--fs-small);
  line-height: 1.5;
  color: var(--text-2);
}
.stage__name,
.stage__num,
.stage__desc { transition: opacity .3s var(--ease), transform .45s var(--ease); }
.stage__glass.is-swapping :is(.stage__name, .stage__num, .stage__desc) {
  opacity: 0;
  transform: translateY(8px);
}

/* ── Index ─────────────────────────────────────────────────── */
.acts {
  grid-column: 8 / -1;
  grid-row: 1 / span 2;
  align-self: center;
  border-bottom: 1px solid var(--line);
}
.act { border-top: 1px solid var(--line); }
.act__h { font: inherit; }
.act__btn {
  display: flex;
  align-items: center;
  gap: 18px;
  width: 100%;
  padding: 22px 0;
  text-align: left;
}
.act__num {
  width: 30px;
  flex: none;
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--text-3);
}
.act__name {
  flex: 1;
  font-size: clamp(1.5rem, 1rem + 1.5vw, 2.5rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -.04em;
  color: var(--text-3);
  transition: color .4s var(--ease), transform .6s var(--ease);
}
.act__btn:hover .act__name { color: var(--ink); }
.act.is-active .act__name { color: var(--ink); transform: translateX(10px); }
.act.is-active .act__num { color: var(--electric); }

.act__plus {                                /* circle → drop when open */
  position: relative;
  width: 36px;
  height: 36px;
  flex: none;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: background-color .4s var(--ease), border-color .4s, border-radius .6s var(--ease);
}
.act__plus::before,
.act__plus::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 1.5px;
  margin: -.75px 0 0 -6px;
  background: var(--ink);
  transition: transform .5s var(--ease), background-color .4s;
}
.act__plus::after { transform: rotate(90deg); }
.act.is-active .act__plus {
  background: var(--electric);
  border-color: var(--electric);
  border-radius: 50% 0 50% 50%;
}
.act.is-active .act__plus::before,
.act.is-active .act__plus::after { background: var(--white); }
.act.is-active .act__plus::after { transform: rotate(0); }

/* Descriptions: read aloud with their button; on wide screens the glass
   panel shows them, on narrow screens they sit under each name. */
.act__desc {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ── Tablet: stage above the index ─────────────────────────── */
@media (max-width: 899px) {
  .work__head,
  .work__stage,
  .acts { grid-column: 1 / -1; grid-row: auto; }
  .work__stage { position: relative; top: auto; width: min(78%, 420px); margin: 0 auto 24px; }
  .stage__desc { display: none; }
  .stage__glass { width: auto; min-width: 50%; }
  .act__desc {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
    max-width: 34rem;
    padding: 0 0 22px 48px;
    color: var(--text-2);
  }
  .act__btn { padding-bottom: 10px; }
  .act__name { color: var(--ink); }
}

/* ── Phones: typography first — every description open ────── */
@media (max-width: 599px) {
  .work__grid { row-gap: 40px; }
  .work__stage { display: none; }
  .act.is-active .act__name { transform: none; }
  .act__plus { display: none; }
  .act__btn { padding: 20px 0 10px; cursor: default; }
}