:root {
  color-scheme: dark;
  --bg: #140e10;
  --bg-raise: #26181c;
  --text: #f6efe9;
  --muted: #c4b5ae;
  --line: rgba(246, 239, 233, 0.16);
  --field: #1b1214;
  --accent: #ff6b57;
  --accent-ink: #2a100c;
  --glow: rgba(255, 107, 87, 0.38);
  --focus: #ffd7cf;
  --danger: #ffb4ab;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

:root[data-mode="short"] {
  --accent: #3dbe8c;
  --accent-ink: #062218;
  --glow: rgba(61, 190, 140, 0.34);
  --focus: #d5ffe9;
}

:root[data-mode="long"] {
  --accent: #7eafff;
  --accent-ink: #0c1830;
  --glow: rgba(126, 175, 255, 0.34);
  --focus: #e2edff;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(900px 480px at 50% -10%, var(--glow), transparent 62%),
    var(--bg);
  color: var(--text);
  line-height: 1.5;
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 1rem;
  top: 0;
  z-index: 2;
  transform: translateY(-120%);
  background: var(--bg-raise);
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: 12px;
}

.skip:focus {
  position: static;
  display: block;
  width: fit-content;
  margin: 1rem 0 0 1rem;
  transform: none;
}

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

.wrap {
  width: min(32rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0 3rem;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.site-header > div {
  flex: 1 1 auto;
  min-width: 0;
}

h1,
h2 {
  font-weight: 700;
  line-height: 1.15;
  margin: 0;
}

h1 {
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: 1.05rem;
}

.lede,
.hint,
.rounds-note,
.phase,
#rounds-label {
  color: var(--muted);
  margin: 0.35rem 0 0;
}

.sound {
  flex: 0 0 auto;
  min-height: 44px;
}

.timer-card,
.custom {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.timer-card {
  padding: 1.25rem 1rem 1.5rem;
}

.timer-card.is-complete {
  box-shadow: inset 0 0 0 2px var(--accent), var(--shadow);
}

.modes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  border: 0;
  min-inline-size: 0;
}

.modes label {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.4rem 0.25rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  text-align: center;
  font-size: 0.8125rem;
  line-height: 1.2;
  cursor: pointer;
}

.modes input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.modes label:has(input:checked) {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}

.dial {
  position: relative;
  width: min(16rem, 78%);
  margin: 1.5rem auto 0.5rem;
  aspect-ratio: 1;
}

.ring {
  display: block;
  width: 100%;
  height: 100%;
}

.ring-track,
.ring-value {
  fill: none;
  stroke-width: 8;
}

.ring-track {
  stroke: rgba(246, 239, 233, 0.1);
}

.ring-value {
  stroke: var(--accent);
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: 60px 60px;
  transition: stroke-dashoffset 0.25s linear;
}

.timer-card.is-running .ring-value {
  filter: drop-shadow(0 0 6px var(--glow));
}

.dial-readout {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.time {
  margin: 0;
  font-size: clamp(3rem, 12vw, 4.25rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
  line-height: 1;
}

.phase {
  margin-top: 0.35rem;
  font-size: 0.95rem;
}

.status {
  min-height: 3.2em;
  margin: 1rem 0;
  text-align: center;
}

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.controls .primary {
  grid-column: 1 / -1;
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  min-height: 48px;
  padding: 0.7rem 1rem;
  border-radius: 14px;
  cursor: pointer;
}

.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border: 0;
  font-weight: 700;
}

.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.rounds-block {
  margin-top: 1.25rem;
  text-align: center;
}

#rounds-label {
  margin: 0;
  font-size: 0.85rem;
}

.rounds {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
}

.rounds li {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 2px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}

.rounds li.is-done {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}

.custom {
  margin-top: 1rem;
  padding: 1.25rem 1rem 1.35rem;
}

.custom label {
  display: block;
  margin: 0.75rem 0 0.5rem;
}

.custom-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
}

input[type="text"] {
  width: 100%;
  min-height: 48px;
  padding: 0.7rem 0.9rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--field);
}

input[aria-invalid="true"] {
  border-color: var(--danger);
}

.error {
  margin: 0.75rem 0 0;
  color: var(--danger);
}

.hint {
  margin: 0.75rem 0 0;
  font-size: 0.9rem;
}

@media (min-width: 40rem) {
  .wrap {
    padding-top: 3rem;
  }

  .timer-card,
  .custom {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .modes label {
    font-size: 0.95rem;
  }

  .controls {
    grid-template-columns: 1.4fr 1fr 1fr;
  }

  .controls .primary {
    grid-column: auto;
  }
}

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

  .timer-card.is-running .ring-value {
    filter: none;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .timer-card.is-complete {
    animation: done-flash 0.9s ease;
  }
}

@keyframes done-flash {
  0% { box-shadow: inset 0 0 0 0 transparent, var(--shadow); }
  35% { box-shadow: inset 0 0 0 3px var(--accent), var(--shadow); }
  100% { box-shadow: inset 0 0 0 2px var(--accent), var(--shadow); }
}