/* Homepage and about page. Shared tokens come from site.css. */

.home-hero { display: grid; gap: var(--s4); padding: var(--s5) 0 var(--s4); align-items: center; }
@media (min-width: 960px) { .home-hero { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: var(--s5); padding-top: var(--s6); } }
.home-hero h1 { font-size: clamp(2.6rem, 6.4vw, 4.6rem); line-height: 1.02; }
.home-hero h1 em { font-style: italic; font-weight: 400; }
.home-hero .lede { margin-top: var(--s3); }
.home-hero .controls { margin-top: var(--s4); }

/* Hero stage: a real Gilbreath shuffle, repeatable. Rows are fanned (overlapping) so ten cards stay legible. */
.hero-stage { container-type: inline-size; padding: var(--s3) var(--s2); display: grid; gap: var(--s3); align-content: start; }
@media (min-width: 720px) { .hero-stage { padding: var(--s4); } }
.hero-stage .card-row.overlap { --card-w: clamp(40px, calc(100cqi / 4.7), 64px); min-height: calc(var(--card-w) * var(--card-ratio) + 22px); padding-top: 20px; align-items: flex-end; }
.hero-stage .card-row.overlap > .card + .card { margin-left: calc(var(--card-w) * -0.6); }
.hero-lanes { display: grid; gap: var(--s2); }
.hero-lane { display: grid; gap: 6px; }
.hero-lane .pile-label { text-align: left; }
.hero-stage .card-row:empty { display: none; } /* emptied piles collapse to their label, which records the pile's order */
.hero-result { position: relative; padding-bottom: 14px; }
.pair-brackets { position: absolute; left: 0; right: 0; bottom: 0; height: 12px; pointer-events: none; }
.pair-bracket { position: absolute; bottom: 0; height: 10px; border: 2px solid var(--invariant); border-top: 0; border-radius: 0 0 4px 4px; opacity: 0; transform: translateY(-4px); transition: opacity 240ms ease, transform 320ms var(--ease-out); }
.pair-bracket.is-on { opacity: 1; transform: none; }
.hero-foot { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; justify-content: space-between; }
.hero-foot .stage-caption { font-size: 0.92rem; }
.hero-record { font-size: 0.92rem; color: var(--secondary-on-stage); font-variant-numeric: tabular-nums; }

/* How a page works: three steps, plain text */
.how { border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: var(--s3) 0; margin-top: var(--s4); display: grid; gap: var(--s3); }
@media (min-width: 760px) { .how { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s4); } }
.how-step { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; align-items: baseline; }
.how-step .n { font-family: var(--font-display); font-style: italic; font-size: 1.9rem; color: var(--invariant-on-page); line-height: 1; grid-row: span 2; }
.how-step h3 { font-size: 1.05rem; }
.how-step p { color: var(--text-2); font-size: 0.98rem; }

/* The programme: acts and tricks, set like a theatre playbill */
.programme { padding-top: var(--s6); }
.programme-head { display: grid; gap: var(--s1); margin-bottom: var(--s4); max-width: 60ch; }
.act { display: grid; gap: var(--s2); padding: var(--s4) 0; border-top: 1px solid var(--rule-strong); }
@media (min-width: 900px) { .act { grid-template-columns: 300px minmax(0, 1fr); gap: var(--s5); } }
.act-head { display: grid; gap: 6px; align-content: start; }
.act-no { font-family: var(--font-display); font-style: italic; color: var(--text-3); font-size: 1.05rem; }
.act-title { font-family: var(--font-display); font-size: clamp(1.5rem, 2.8vw, 1.95rem); line-height: 1.15; }
.act-blurb { color: var(--text-2); font-size: 1rem; max-width: 34ch; }
.act-list { list-style: none; margin: 0; padding: 0; display: grid; }
.act-item a {
  display: grid; grid-template-columns: minmax(0, 1fr); gap: 2px 16px; padding: 14px 0; text-decoration: none;
  border-bottom: 1px solid var(--rule);
}
@media (min-width: 640px) {
  .act-item a { grid-template-columns: minmax(0, 1fr) auto; }
  .act-item .principle { grid-column: 2; grid-row: 1; text-align: right; }
}
.act-item:last-child a { border-bottom: 0; }
.act-item .t { font-family: var(--font-display); font-size: 1.3rem; line-height: 1.25; display: inline-flex; align-items: baseline; gap: 10px; }
.act-item .t .arrow { font-family: var(--font-ui); font-size: 0.95rem; color: var(--text-3); transform: translateX(-4px); opacity: 0; transition: transform 200ms var(--ease-out), opacity 150ms ease; }
@media (hover: hover) and (pointer: fine) {
  .act-item a:hover .t .arrow { transform: none; opacity: 1; }
  .act-item a:hover .t span:first-child { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; text-decoration-color: var(--rule-strong); }
}
.act-item .hook { color: var(--text-2); font-size: 1rem; grid-column: 1; max-width: 62ch; }
.act-item .principle { font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); font-weight: 600; align-self: baseline; padding-top: 6px; }
.act-item .soon { font-size: 0.8rem; color: var(--text-3); }

/* About page */
.about-hero { padding: var(--s5) 0 var(--s3); display: grid; gap: var(--s2); }
.about-grid { display: grid; gap: var(--s5); }
.legend-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.legend-list li { display: grid; grid-template-columns: 22px 1fr; gap: 12px; align-items: baseline; }
.legend-list .sw { width: 22px; height: 14px; border-radius: 3px; border: 2px solid; }