/* Breathwork Timer — Liquid Breathwork (Deep Surrender palette)
   navy #0a1628 · deep water #0d1b3e · gold #c9a96e · cream #f5f0e8 */

:root {
  --abyss: #0a1628;
  --deep-water: #0d1b3e;
  --undertow: #16264d;
  --gold: #c9a96e;
  --gold-soft: #d4b67f;
  --cream: #f5f0e8;
  --cream-dim: rgba(245, 240, 232, 0.6);
  --cream-faint: rgba(245, 240, 232, 0.12);
  --radius: 14px;
  --orb-size: min(64vw, 340px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(140% 120% at 50% 0%, var(--deep-water) 0%, var(--abyss) 60%);
  color: var(--cream);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}

.skip-link {
  position: absolute;
  left: -999px;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  background: var(--gold);
  color: var(--abyss);
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
}

.app {
  max-width: 680px;
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2.5rem) 1.25rem 3rem;
}

.masthead { text-align: center; }
.masthead h1 {
  font-size: clamp(1.6rem, 5vw, 2.3rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0 0 0.4rem;
}
.tagline {
  color: var(--cream-dim);
  margin: 0 auto;
  max-width: 34ch;
  line-height: 1.5;
}

/* ---- Stage / orb ---- */
.stage { text-align: center; }

.orb-wrap {
  position: relative;
  width: var(--orb-size);
  height: var(--orb-size);
  margin: clamp(1.5rem, 6vw, 2.75rem) auto clamp(1rem, 3vw, 1.5rem);
  display: grid;
  place-items: center;
}

.ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--cream-faint);
}

.orb {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 38%, var(--gold-soft) 0%, var(--gold) 45%, #a8884f 100%);
  box-shadow: 0 0 60px rgba(201, 169, 110, 0.35), inset 0 0 50px rgba(10, 22, 40, 0.25);
  display: grid;
  place-items: center;
  transform: scale(0.55);
  transition: transform 4s ease-in-out, box-shadow 4s ease-in-out;
  will-change: transform;
}
.orb.is-bright {
  box-shadow: 0 0 90px rgba(201, 169, 110, 0.55), inset 0 0 50px rgba(10, 22, 40, 0.2);
}

.orb-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  color: var(--abyss);
}
.phase-label {
  font-size: clamp(1.1rem, 4vw, 1.5rem);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.phase-count {
  font-size: clamp(2rem, 9vw, 3.2rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.session-meta {
  color: var(--cream-dim);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.03em;
  margin: 0.25rem 0 1.25rem;
}
.dot { opacity: 0.5; margin: 0 0.5rem; }

.stage-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

/* ---- Buttons ---- */
.btn {
  font: inherit;
  font-weight: 600;
  border-radius: 10px;
  padding: 0.8rem 1.8rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.2s, border-color 0.2s, color 0.2s, opacity 0.2s;
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--gold); color: var(--abyss); }
.btn-primary:hover:not(:disabled) { background: var(--gold-soft); }
.btn-ghost {
  background: transparent;
  color: var(--cream);
  border-color: rgba(201, 169, 110, 0.4);
}
.btn-ghost:hover:not(:disabled) { border-color: var(--gold); color: var(--gold); }

/* ---- Controls ---- */
.controls {
  margin-top: 2.5rem;
  display: grid;
  gap: 1.5rem;
}
fieldset {
  border: 1px solid var(--cream-faint);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem 1.25rem;
  margin: 0;
}
legend {
  padding: 0 0.5rem;
  color: var(--cream-dim);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.6rem;
}
.preset {
  font: inherit;
  font-weight: 600;
  padding: 0.7rem 0.5rem;
  border-radius: 10px;
  background: var(--undertow);
  color: var(--cream);
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
}
.preset small {
  display: block;
  font-weight: 400;
  color: var(--cream-dim);
  margin-top: 0.2rem;
  font-size: 0.78rem;
}
.preset:hover { border-color: rgba(201, 169, 110, 0.4); }
.preset[aria-checked="true"] {
  border-color: var(--gold);
  background: rgba(201, 169, 110, 0.14);
}
.preset-desc {
  color: var(--cream-dim);
  margin: 0.9rem 0 0;
  min-height: 1.4em;
  line-height: 1.5;
}

.custom-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.75rem;
}
.custom-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--cream-dim);
}
.custom-grid input {
  font: inherit;
  padding: 0.55rem 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--cream-faint);
  background: var(--abyss);
  color: var(--cream);
}

.toggles {
  display: grid;
  gap: 0.85rem;
}
.toggle {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--cream);
}
.toggle input[type="checkbox"] { width: 1.1rem; height: 1.1rem; accent-color: var(--gold); }
.toggle-text { margin-right: auto; }
.toggle select {
  font: inherit;
  padding: 0.45rem 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--cream-faint);
  background: var(--abyss);
  color: var(--cream);
}

/* ---- About + footer ---- */
.about {
  margin-top: 2.5rem;
  line-height: 1.6;
}
.about h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
}
.about ul { padding-left: 1.1rem; margin: 0 0 1.25rem; }
.about li { margin-bottom: 0.5rem; color: var(--cream-dim); }
.about li strong { color: var(--cream); }
.safety {
  font-size: 0.9rem;
  color: var(--cream-dim);
  background: var(--deep-water);
  border-left: 3px solid var(--gold);
  border-radius: 0 8px 8px 0;
  padding: 0.9rem 1rem;
  margin: 0;
}

.footer {
  margin-top: 2.5rem;
  text-align: center;
  color: var(--cream-dim);
  font-size: 0.9rem;
  line-height: 1.7;
}
.footer a { color: var(--gold); text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer-links { margin-top: 0.3rem; }

@media (prefers-reduced-motion: reduce) {
  .orb { transition: none; }
}