:root {
  color-scheme: dark;
  --ink: #170d12;
  --leather: #24151a;
  --leather-deep: #11090d;
  --parchment: #f3e9cf;
  --muted: #bfae8c;
  --rule: #d7c39a;
  --accent: #42e8ff;
  --accent-soft: rgba(66, 232, 255, 0.18);
  --shadow: rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

html { min-width: 320px; }

body {
  min-height: 100vh;
  margin: 0;
  color: var(--parchment);
  background:
    radial-gradient(circle at 15% 10%, rgba(112, 37, 57, 0.24), transparent 28rem),
    radial-gradient(circle at 90% 88%, rgba(66, 232, 255, 0.06), transparent 32rem),
    repeating-linear-gradient(103deg, transparent 0 5px, rgba(255,255,255,0.012) 6px, transparent 7px),
    var(--ink);
  font-family: Georgia, Cambria, "Times New Roman", serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.32;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='90' height='90'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.09'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

.page-shell {
  width: min(100% - 32px, 680px);
  min-height: 100vh;
  margin-inline: auto;
  padding: 24px 0 32px;
  display: grid;
  align-content: center;
  gap: 20px;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-inline: 4px;
}

.wordmark {
  color: var(--parchment);
  text-decoration: none;
  font-size: clamp(1rem, 4vw, 1.25rem);
  letter-spacing: 0.04em;
}

.wordmark > span {
  color: var(--accent);
  font-size: 1.5em;
  font-weight: 700;
  text-shadow: 0 0 14px rgba(66, 232, 255, 0.45);
}

.masthead-ledger {
  margin: 0;
  color: var(--muted);
  font: 0.72rem/1.2 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: right;
}

.masthead-ledger strong { color: var(--parchment); }

.timer-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(24px, 6vw, 42px);
  background:
    linear-gradient(145deg, rgba(255,255,255,0.035), transparent 34%),
    repeating-linear-gradient(97deg, transparent 0 9px, rgba(255,255,255,0.012) 10px, transparent 11px),
    var(--leather);
  border: 1px solid rgba(215, 195, 154, 0.72);
  box-shadow: 0 22px 70px var(--shadow), inset 0 0 0 5px var(--leather), inset 0 0 0 6px rgba(215, 195, 154, 0.24);
  clip-path: polygon(12px 0, calc(100% - 12px) 0, 100% 12px, 100% calc(100% - 12px), calc(100% - 12px) 100%, 12px 100%, 0 calc(100% - 12px), 0 12px);
}

.timer-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.6;
  box-shadow: inset 0 1px 34px var(--accent-soft);
  transition: box-shadow 350ms ease;
}

.timer-card.is-break {
  --accent: #b7f45a;
  --accent-soft: rgba(183, 244, 90, 0.17);
}

.timer-card.phase-changed::before { animation: boundary-glow 900ms ease-out; }

.card-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.sigil { color: var(--accent); font-size: 1rem; }

.phase-lockup {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 14px;
  margin-top: clamp(24px, 6vw, 42px);
}

.phase-lockup h1 {
  margin: 0;
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.flourish { height: 1px; background: linear-gradient(90deg, transparent, var(--rule)); }
.flourish:last-child { background: linear-gradient(90deg, var(--rule), transparent); }

.countdown {
  margin: 10px 0 2px;
  color: var(--parchment);
  font: 700 clamp(4.3rem, 18vw, 8.7rem)/0.95 ui-sans-serif, system-ui, sans-serif;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -0.065em;
  text-align: center;
  text-shadow: 0 3px 0 var(--leather-deep), 0 0 30px var(--accent-soft);
  white-space: nowrap;
}

.state-cue {
  margin: 10px 0 clamp(25px, 6vw, 42px);
  color: var(--muted);
  font: 0.88rem/1.4 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.08em;
  text-align: center;
}

.progress-track {
  height: 3px;
  overflow: hidden;
  background: rgba(215, 195, 154, 0.16);
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  transition: width 300ms linear;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding-top: 17px;
  color: var(--muted);
  font: 0.72rem/1.4 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-footer strong {
  color: var(--parchment);
  font-size: 1.25rem;
  font-variant-numeric: tabular-nums;
}

.controls { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 12px; }

.button {
  min-height: 52px;
  padding: 12px 18px;
  border: 1px solid rgba(215, 195, 154, 0.52);
  border-radius: 2px;
  color: var(--parchment);
  background: rgba(36, 21, 26, 0.8);
  font: 700 0.78rem/1 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.button:not(:disabled):hover { transform: translateY(-2px); border-color: var(--parchment); }
.button:not(:disabled):active { transform: translateY(0); }
.button:focus-visible, .wordmark:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.button-primary { color: #081316; border-color: var(--accent); background: var(--accent); }
.button-reset { border-style: dashed; }
.button:disabled { opacity: 0.38; cursor: not-allowed; }

.storage-warning, .noscript {
  margin: -4px 0 0;
  color: #f0c79d;
  font: 0.78rem/1.5 ui-sans-serif, system-ui, sans-serif;
  text-align: center;
}

.rhythm-note {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 11px;
  margin: 0;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.rhythm-note i { width: 4px; height: 4px; border: 1px solid var(--accent); transform: rotate(45deg); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes boundary-glow {
  0% { box-shadow: inset 0 0 0 var(--accent-soft); }
  35% { box-shadow: inset 0 0 70px var(--accent-soft); }
  100% { box-shadow: inset 0 1px 34px var(--accent-soft); }
}

@media (max-width: 420px) {
  .page-shell { width: min(100% - 24px, 680px); padding-block: 14px 24px; gap: 15px; }
  .masthead-ledger { max-width: 100px; }
  .timer-card { padding-inline: 20px; }
  .countdown { font-size: clamp(4rem, 23vw, 6rem); }
  .controls { gap: 7px; }
  .button { min-width: 0; padding-inline: 8px; font-size: 0.69rem; }
  .card-footer { align-items: center; }
  .card-footer span { max-width: 185px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}