:root {
  --ink: var(--text-1);
  --muted: var(--text-2);
  --accent: var(--accent-primary);
  --accent-ink: var(--text-on-accent);
  --font-body: var(--font-ui);
}

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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--surface-0);
  line-height: 1.45;
}

.app {
  width: min(760px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 4.5rem 0 3.5rem;
}

.hero {
  margin-bottom: 1.75rem;
  padding-left: 0.15rem;
}

.eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-primary);
  font-weight: 600;
}

h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--text-1);
}

.tagline {
  margin: 0.85rem 0 1.25rem;
  max-width: 34rem;
  color: var(--text-2);
  font-size: 1.05rem;
}

.round-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  background: var(--accent-primary-soft);
  border: 1px solid var(--hairline-accent);
  color: var(--accent-primary);
  font-size: 0.85rem;
  font-weight: 600;
}

.pill[data-state='closed'] {
  background: var(--danger-soft);
  border-color: color-mix(in srgb, var(--danger) 35%, var(--hairline));
  color: var(--danger);
}

.pill[data-state='waiting'] {
  background: var(--surface-2);
  border-color: var(--hairline-strong);
  color: var(--text-2);
}

.timer {
  font-variant-numeric: tabular-nums;
  color: var(--text-2);
  font-size: 0.95rem;
}

.banner {
  margin-bottom: 1.25rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-lg);
  background: var(--danger-soft);
  border: 1px solid color-mix(in srgb, var(--danger) 30%, var(--hairline));
  color: var(--danger);
  font-size: 0.95rem;
}

.banner[data-tone='info'] {
  background: var(--warning-soft);
  border-color: color-mix(in srgb, var(--warning) 35%, var(--hairline));
  color: var(--text-1);
}

.questions {
  display: grid;
  gap: 1rem;
}

.stage {
  display: grid;
  gap: 1rem;
}

.panel {
  background: var(--surface-1);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.25rem;
  box-shadow: var(--shadow-card);
  text-align: center;
}

.panel-lead {
  margin: 0 0 1.25rem;
  color: var(--text-2);
  font-size: 1.05rem;
}

.panel-note {
  margin: 1.1rem 0 0;
  color: var(--text-3);
  font-size: 0.88rem;
}

.panel-note code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--accent-primary);
}

.countdown-lg {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 12vw, 4.5rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
  color: var(--text-1);
  line-height: 1;
}

.btn-primary {
  appearance: none;
  border: 1px solid var(--accent-primary);
  background: var(--accent-primary);
  color: var(--text-on-accent);
  border-radius: var(--radius);
  padding: 0.7rem 1.35rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.phase-head {
  margin-bottom: 0.25rem;
}

.play-timer {
  text-align: center;
  margin-bottom: 0.75rem;
  padding: 0.75rem 1rem 1rem;
  background: var(--surface-1);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.play-timer .countdown-lg {
  font-size: clamp(2.2rem, 9vw, 3.4rem);
}

.play-timer .panel-lead {
  margin: 0.45rem 0 0;
  font-size: 0.95rem;
}

.phase-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-1);
}

.phase-actions {
  display: flex;
  justify-content: center;
  margin-top: 0.5rem;
}

.card {
  background: var(--surface-1);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  padding: 1.15rem 1.2rem 1.25rem;
  box-shadow: var(--shadow-card);
}

.card-top {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: baseline;
  margin-bottom: 0.55rem;
}

.mode {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent-primary);
}

.sort {
  font-size: 0.8rem;
  color: var(--text-3);
}

.prompt {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--text-1);
}

.choices {
  display: grid;
  gap: 0.55rem;
}

.choice,
.submit-est {
  appearance: none;
  border: 1px solid var(--hairline-strong);
  background: var(--surface-2);
  color: var(--text-1);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  font: inherit;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.choice:hover:not(:disabled),
.submit-est:hover:not(:disabled) {
  border-color: var(--accent-primary);
  background: var(--accent-primary-soft);
}

.choice:disabled,
.submit-est:disabled,
.est-input:disabled {
  opacity: 0.55;
  cursor: default;
}

.choice[aria-pressed='true'] {
  border-color: var(--accent-primary);
  background: var(--accent-primary-soft);
  box-shadow: inset 0 0 0 1px var(--hairline-accent);
}

.estimate-row {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.est-input {
  flex: 1 1 10rem;
  min-width: 0;
  border: 1px solid var(--hairline-strong);
  background: var(--surface-1);
  color: var(--text-1);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  font: inherit;
  font-variant-numeric: tabular-nums;
}

.est-input:focus,
.choice:focus-visible,
.submit-est:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.unit {
  align-self: center;
  color: var(--text-2);
  font-size: 0.9rem;
}

.status-line {
  margin: 0.85rem 0 0;
  font-size: 0.9rem;
  color: var(--success);
}

.status-line[data-tone='muted'] {
  color: var(--text-2);
}

.results {
  margin-top: 0.95rem;
  display: grid;
  gap: 0.45rem;
}

.result-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 0.75rem;
  align-items: center;
  font-size: 0.9rem;
}

.result-label {
  color: var(--text-2);
}

.result-bar-track {
  grid-column: 1 / -1;
  height: 8px;
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  overflow: hidden;
}

.result-bar {
  height: 100%;
  width: 0;
  background: var(--accent-primary);
  border-radius: inherit;
  transition: width 0.45s ease;
}

.reveal {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--hairline);
  font-size: 0.92rem;
  color: var(--text-2);
}

.reveal strong {
  color: var(--accent-primary);
  font-weight: 600;
}

.empty,
.loading {
  padding: 2rem 1.25rem;
  text-align: center;
  color: var(--text-2);
  border: 1px dashed var(--hairline-strong);
  border-radius: var(--radius-lg);
  background: var(--surface-1);
}

.empty code {
  color: var(--accent-primary);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

@media (max-width: 640px) {
  .app {
    width: min(100% - 1.25rem, 760px);
    padding-top: 4rem;
  }

  .prompt {
    font-size: 1.2rem;
  }
}