/* The Suzu lab (Phase 8 step 59b): the site's paper in the light, a scope's glass in the dark. */
:root {
  color-scheme: light dark;
  --bg: #efece4; --panel: #faf8f3; --ink: #1c1b19; --muted: #6c6860; --rule: #d8d3c8;
  --tube: #2b2925; --glass: #f4f1ea;
  --p: #b4532a; --p-fill: rgba(180, 83, 42, 0.22); --env: rgba(180, 83, 42, 0.45);
  --u: #2c6e8f; --jet: #2c6e8f; --edge: #1c1b19; --harm: rgba(28, 27, 25, 0.22);
  --trace: #b4532a; --breath: #2c6e8f; --accent: #b4532a; --accent-ink: #fff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121316; --panel: #1a1c20; --ink: #e8e4da; --muted: #9a958a; --rule: #2c2f35;
    --tube: #cfc9bc; --glass: #0f1013;
    --p: #f1b866; --p-fill: rgba(241, 184, 102, 0.20); --env: rgba(241, 184, 102, 0.45);
    --u: #7fb7d4; --jet: #7fb7d4; --edge: #e8e4da; --harm: rgba(232, 228, 218, 0.18);
    --trace: #f1b866; --breath: #7fb7d4; --accent: #f1b866; --accent-ink: #1a1c20;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
h1, h2 { margin: 0; font-weight: 600; }
h1 { font-size: 20px; letter-spacing: 0.01em; }
h1 .sep { color: var(--muted); font-weight: 400; margin: 0 4px; }
h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.bar { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between;
  padding: 16px max(16px, 3vw) 10px; }
.sub { margin: 4px 0 0; color: var(--muted); max-width: 62ch; }
.bar-actions { display: flex; align-items: center; gap: 16px; }
button { font: inherit; padding: 6px 12px; border: 1px solid var(--rule); border-radius: 7px;
  background: var(--panel); color: var(--ink); cursor: pointer; }
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
button:disabled { opacity: 0.5; cursor: default; }
.vol { display: flex; align-items: center; gap: 8px; color: var(--muted); }
input[type=range] { accent-color: var(--accent); }

.grid { display: grid; gap: 12px; padding: 4px max(16px, 3vw) 16px;
  grid-template-columns: repeat(12, minmax(0, 1fr)); }
.panel { background: var(--panel); border: 1px solid var(--rule); border-radius: 10px; padding: 10px 12px 12px; min-width: 0; }
.panel-head { display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.legend { color: var(--muted); font-size: 12px; display: inline-flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.sw { display: inline-block; width: 14px; height: 3px; border-radius: 2px; margin-left: 6px; vertical-align: middle; }
.sw.p { background: var(--p); } .sw.env { background: var(--env); } .sw.u { background: var(--u); } .sw.harm { background: var(--muted); }
canvas { display: block; width: 100%; background: var(--glass); border-radius: 6px; }
.bore-panel { grid-column: span 12; }
#bore { height: 220px; }
.phase-panel { grid-column: span 3; }
#phase { aspect-ratio: 1 / 1; height: auto; }
.spec-panel { grid-column: span 5; }
.spec-panel #spectrum { height: 100%; min-height: 200px; }   /* the flute's: the panel stretches with its row (a page whose panel sizes to its canvas would grow it every frame) */
.spec-panel { display: flex; flex-direction: column; }
.spec-panel canvas { flex: 1; }
.read-panel { grid-column: span 4; }
#history { height: 110px; margin-top: 8px; }
.play-panel { grid-column: span 12; }
.note, .hint, .caption { color: var(--muted); font-size: 12.5px; margin: 8px 0 0; max-width: 100ch; }
.caption { display: flex; gap: 16px; } .k-pitch { color: var(--trace); } .k-breath { color: var(--breath); }

.readouts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px 12px; margin: 0; }
.readouts div { min-width: 0; }
.readouts dt { font-size: 11.5px; color: var(--muted); }
.readouts dd { margin: 0; font-size: 17px; font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.keys { position: relative; height: 76px; display: flex; user-select: none; touch-action: none; margin-bottom: 10px; }
.key { position: relative; flex: 1; border: 1px solid var(--rule); border-radius: 0 0 5px 5px; background: #fffdf8; margin-right: -1px;
  display: flex; align-items: flex-end; justify-content: center; padding-bottom: 4px; font-size: 10.5px; color: #8b867b; cursor: pointer; }
.key.black { position: absolute; width: 0; height: 46px; z-index: 2; background: #2b2925; border-color: #2b2925; color: transparent; }
.key.on { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.key.black.on { background: var(--accent); }
@media (prefers-color-scheme: dark) { .key { background: #e9e5db; } .key.black { background: #0b0c0e; border-color: #0b0c0e; } }
.row { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; }
.breath { display: flex; align-items: center; gap: 8px; flex: 1 1 260px; }
.breath input { flex: 1; }
.breath output, .param output { font-variant-numeric: tabular-nums; min-width: 3.2em; text-align: right; color: var(--muted); }
.advanced { margin-top: 10px; }
.advanced summary { cursor: pointer; color: var(--muted); }
.param { display: grid; grid-template-columns: 11em 1fr 4em; gap: 8px; align-items: center; margin: 6px 0; max-width: 560px; }
.check { display: flex; gap: 8px; align-items: center; margin-top: 8px; }
.foot { display: flex; flex-wrap: wrap; gap: 6px 18px; justify-content: space-between; padding: 0 max(16px, 3vw) 18px; color: var(--muted); font-size: 12px; }

@media (max-width: 900px) {
  .phase-panel { grid-column: span 5; } .spec-panel { grid-column: span 7; } .read-panel { grid-column: span 12; }
}
@media (max-width: 600px) {
  .phase-panel, .spec-panel, .read-panel { grid-column: span 12; }
  #bore { height: 170px; }
  .readouts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .param { grid-template-columns: 1fr; }
}

/* ---- step 59c: the lab's pages ---- */
:root { --red: #b3261e; --red-fill: rgba(179, 38, 30, 0.10); --ok: #2e7d4f; }
@media (prefers-color-scheme: dark) { :root { --red: #ff8a80; --red-fill: rgba(255, 138, 128, 0.12); --ok: #81c995; } }
.lab-nav { display: flex; flex-wrap: wrap; gap: 4px 6px; padding: 0 max(16px, 3vw) 10px; }
.lab-nav a { color: var(--muted); text-decoration: none; padding: 3px 9px; border-radius: 999px; border: 1px solid transparent; font-size: 13px; }
.lab-nav a:hover { border-color: var(--rule); color: var(--ink); }
.lab-nav a[aria-current="page"] { color: var(--ink); border-color: var(--rule); background: var(--panel); }
.banner { margin: 0 max(16px, 3vw) 10px; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--rule); font-size: 13.5px; }
.banner.red { border-color: var(--red); background: var(--red-fill); color: var(--ink); }
.banner.refused { border-color: var(--accent); background: var(--p-fill); }
.banner[hidden] { display: none; }
.seg { display: inline-flex; border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; }
.seg button { border: 0; border-radius: 0; border-right: 1px solid var(--rule); }
.seg button:last-child { border-right: 0; }
.seg button.on { background: var(--accent); color: var(--accent-ink); }
select { font: inherit; padding: 5px 8px; border: 1px solid var(--rule); border-radius: 7px; background: var(--panel); color: var(--ink); }
.controls { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; margin-top: 10px; }
.controls label.slide { display: grid; grid-template-columns: auto minmax(120px, 1fr) 3.6em; gap: 8px; align-items: center; flex: 1 1 280px; }
.controls label.slide output { font-variant-numeric: tabular-nums; text-align: right; color: var(--muted); }
.lab-mode { margin-top: 12px; border: 1px dashed var(--red); border-radius: 8px; padding: 8px 12px; }
.lab-mode summary { cursor: pointer; color: var(--red); }
.lab-mode p { color: var(--muted); font-size: 12.5px; margin: 6px 0; max-width: 100ch; }
.lab-mode .row { margin-top: 6px; }
.span-12 { grid-column: span 12; } .span-8 { grid-column: span 8; } .span-7 { grid-column: span 7; } .span-6 { grid-column: span 6; }
.span-5 { grid-column: span 5; } .span-4 { grid-column: span 4; } .span-3 { grid-column: span 3; }
canvas.wide { height: 230px; } canvas.square { aspect-ratio: 1 / 1; height: auto; } canvas.strip { height: 120px; } canvas.tall { height: 260px; }
.meter { display: grid; grid-template-columns: 9em 1fr 5em; gap: 6px 10px; align-items: center; font-size: 13px; }
.meter .gauge { height: 10px; border-radius: 5px; background: var(--rule); overflow: hidden; }
.meter .gauge i { display: block; height: 100%; background: var(--accent); }
.meter output { text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; padding: 4px max(16px, 3vw) 16px; }
.card { display: block; background: var(--panel); border: 1px solid var(--rule); border-radius: 10px; padding: 14px 16px; color: var(--ink); text-decoration: none; }
.card:hover { border-color: var(--muted); }
.card h2 { font-size: 15px; text-transform: none; letter-spacing: 0; color: var(--ink); margin-bottom: 6px; }
.card p { margin: 0; color: var(--muted); font-size: 13px; }
.prose { padding: 0 max(16px, 3vw) 12px; max-width: 90ch; color: var(--muted); }
.prose p { margin: 6px 0; }
@media (max-width: 900px) {
  .span-8, .span-7, .span-6, .span-5 { grid-column: span 12; } .span-4, .span-3 { grid-column: span 6; }
}
@media (max-width: 600px) { .span-4, .span-3 { grid-column: span 12; } .meter { grid-template-columns: 7em 1fr 4.5em; } }
/* An author `display` beats the UA's [hidden] (the marble's lesson, again): restate it for every element. */
[hidden] { display: none !important; }
.hint a, .note a, .prose a { color: var(--accent); }