:root {
  color-scheme: light;
  color: #182521;
  background: #f5f7f1;
  font-family: system-ui, sans-serif;
  line-height: 1.5;
  --muted: #4c5b54;
  --border: #cad5cc;
  --accent: #dbf57b;
}

* { box-sizing: border-box; }
body { margin: 0; }
p { margin: 0; }
[hidden] { display: none !important; }

.site-header, main {
  width: min(67rem, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}

.brand { font-size: 1.35rem; font-weight: 800; letter-spacing: -.05em; }
.site-label, .hint { color: var(--muted); font-size: .875rem; }
main { padding-block: clamp(2rem, 6vw, 5.5rem); }
.setup, .room-layout { display: grid; gap: 1rem; }
.setup { grid-template-columns: 1fr 1fr; align-items: start; gap: clamp(1.5rem, 5vw, 4rem); }
.room-layout { grid-template-columns: minmax(0, 2.3fr) minmax(13rem, 1fr); }

h1, h2 { line-height: 1.12; margin: 0; }
.intro h1 { font-size: clamp(2.8rem, 6vw, 5.1rem); letter-spacing: -.065em; margin-block: .55rem 1rem; }
.intro > p:last-child { color: var(--muted); max-width: 32ch; font-size: 1.125rem; }
.eyebrow { text-transform: uppercase; font-size: .78rem; font-weight: 750; letter-spacing: .12em; }

.card {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: clamp(1rem, 3vw, 1.65rem);
  background: #fff;
}

label { display: block; font-weight: 700; }
.hint { margin-top: .35rem; }
textarea, select, input, button { font: inherit; color: inherit; }
textarea, select, input {
  min-width: 0;
  padding: .65rem .75rem;
  border: 1px solid #86968c;
  border-radius: .5rem;
  background: #fff;
}
textarea { width: 100%; margin-top: .7rem; resize: vertical; }
button {
  border: 1px solid #1b3229;
  border-radius: .5rem;
  padding: .65rem 1rem;
  background: #1b3229;
  color: white;
  font-weight: 700;
  cursor: pointer;
}
button:hover { background: #2c4a3d; }
a { color: #234b3b; }
:focus-visible { outline: 3px solid #356b53; outline-offset: 3px; }
.form-actions, .share-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: .85rem; }
.form-actions { align-items: end; justify-content: space-between; }
.field select { margin-top: .35rem; }
.share-actions { align-items: center; }
.share-actions input { flex: 1 1 13rem; }
.error { color: #a02323; margin-top: .65rem; }

.stage {
  padding: clamp(1rem, 5vw, 3.5rem);
  border-radius: 1rem;
  color: #f2f7ef;
  background: #1b3229;
  text-align: center;
  overflow-wrap: anywhere;
}
.stage h1, .stage h2 { margin-top: .6rem; font-size: clamp(1.75rem, 4vw, 3.3rem); }
.stage h1:focus-visible { outline-color: var(--accent); }
.stage .eyebrow, .clock { color: var(--accent); }
.clock {
  font-size: clamp(3rem, 10vw, 8rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.045em;
  line-height: 1.22;
}
.timeline h2 { font-size: 1.125rem; }
.timeline ol { padding-left: 1.45rem; margin: .6rem 0 0; }
.timeline li { padding: .35rem .45rem; border-radius: .35rem; overflow-wrap: anywhere; }
.timeline li[aria-current="step"] { background: var(--accent); font-weight: 750; }
.sharing { margin-top: 1rem; }
#copy-status:not(:empty) { margin-top: .35rem; font-size: .875rem; }
.focus-main { padding-block-start: clamp(1rem, 3vw, 2.75rem); }
.focus-intro { margin-bottom: clamp(.85rem, 2.5vw, 1.5rem); }
.focus-intro h1 { font-size: clamp(1.9rem, 5vw, 3.25rem); margin-block: 0 .5rem; }
.focus-intro > p:first-of-type { max-width: 54ch; color: var(--muted); }
.presets { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: .65rem; }
.presets button { padding: .45rem .65rem; min-height: 2.5rem; color: #234b3b; background: #fff; font-size: .875rem; }
.presets button:hover { background: #edf3e9; }
.presets button[aria-pressed="true"] { background: var(--accent); }
.presets button:disabled, .focus-plan button:disabled { opacity: .5; cursor: default; }
.focus-main .stage { padding: clamp(1rem, 4vw, 2.6rem); }
.focus-main .clock { font-size: clamp(3.5rem, 10vw, 7rem); }
.focus-controls { display: flex; justify-content: center; flex-wrap: wrap; gap: .55rem; margin-top: 1rem; }
.focus-controls button { border-color: #8ca898; }
.focus-controls button:first-child { background: var(--accent); color: #182521; }
.focus-controls button:disabled { opacity: .45; cursor: default; }
.phase-sound { display: flex; justify-content: center; align-items: center; gap: .45rem; margin-top: .55rem; padding: .3rem; font-size: .875rem; cursor: pointer; }
.phase-sound input, .auto-next input { accent-color: var(--accent); width: 1rem; height: 1rem; margin: 0; }
.phase-sound input:focus-visible { outline-color: var(--accent); }
.focus-plan { margin-top: 1rem; }
.focus-plan summary { cursor: pointer; font-weight: 700; }
.focus-plan form { margin-top: .7rem; }
.cycle-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 8rem), 1fr)); gap: .7rem; margin-bottom: .75rem; }
.cycle-fields input { width: 100%; margin-top: .3rem; }
.auto-next { display: flex; align-items: center; gap: .5rem; margin-block: 1rem; }
.auto-next input { flex: none; }
.advanced-plan { border-top: 1px solid var(--border); padding-top: .75rem; }
.focus-history { border-top: 1px solid var(--border); margin-top: 1rem; padding-top: .85rem; }
.focus-history dl { margin: .5rem 0; }
.focus-history dl div { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .15rem .7rem; font-size: .875rem; }
.focus-history dd { margin: 0; font-weight: 750; }
.timer-guide { margin-top: 1rem; }
.timer-guide ol { padding-left: 1.4rem; }
.timer-guide li + li { margin-top: .5rem; }
.presentation-button { margin-top: 1rem; border-color: #8ca898; }
.stage[data-tone="warning"] .clock { color: #ffe4a0; }
.stage[data-tone="urgent"] .clock { color: #ffb8ab; }
.stage:fullscreen { display: grid; align-content: center; gap: .75rem; border-radius: 0; overflow: auto; }
.stage:fullscreen .clock { font-size: clamp(4rem, 16vw, 15rem); }
.stage:fullscreen h1 { font-size: clamp(2rem, 6vw, 6rem); }

@media (max-width: 42rem) {
  .setup, .room-layout { grid-template-columns: minmax(0, 1fr); }
}