:root {
  --bg: #12141a;
  --panel: #1c1f28;
  --panel-edge: #2e3340;
  --ink: #eef1f7;
  --ink-dim: #a3abbd;
  --accent: #5aa9ff;
  --accent-ink: #08111d;
  --good: #4ec97f;
  --bad: #ff6f6f;
  --gold: #ffc857;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 1.5rem 1rem 3rem;
  background: var(--bg);
  color: var(--ink);
  font: 1rem/1.6 system-ui, "Segoe UI", Roboto, sans-serif;
}

#app {
  max-width: 46rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

h1, h2 { line-height: 1.25; margin: 0; }
h1 { font-size: 1.7rem; }
h2 { font-size: 1.2rem; }
p { margin: 0; }

.screen-title:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }

.tagline, .clue-type, .hint-note { color: var(--ink-dim); }
.clue-type { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; }
.coins { color: var(--gold); font-weight: 600; }
.error { color: var(--bad); }

button {
  font: inherit;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius);
  padding: 0.6rem 1rem;
  cursor: pointer;
  text-align: left;
}

button:hover:not([disabled]) { border-color: var(--accent); }
button:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
button[disabled] { cursor: not-allowed; opacity: 0.45; }

.back { align-self: flex-start; padding: 0.4rem 0.8rem; color: var(--ink-dim); }

.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  font-weight: 600;
  align-self: flex-start;
}

/* Stage select */
.stage-list, .level-grid { list-style: none; margin: 0; padding: 0; }
.stage-list { display: flex; flex-direction: column; gap: 0.6rem; }
.stage-button { width: 100%; display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.stage-name { font-size: 1.15rem; font-weight: 600; }
.stage-status { color: var(--ink-dim); font-size: 0.9rem; }

/* Level select */
.level-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(3.5rem, 1fr)); gap: 0.5rem; }
.level-button { width: 100%; text-align: center; padding: 0.7rem 0.3rem; font-weight: 600; }
.level-button.cleared { border-color: var(--good); color: var(--good); }
.level-button.ready { border-color: var(--accent); }

/* Puzzle */
.clue { font-size: 1.25rem; }

.slots {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.4rem 0;
}

.slot {
  min-width: 2.4rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
  text-transform: lowercase;
  border-bottom: 3px solid var(--panel-edge);
  background: var(--panel);
  border-radius: 6px 6px 0 0;
  padding: 0 0.3rem;
}

.slot.filled { border-bottom-color: var(--accent); }
.slot.revealed { border-bottom-color: var(--gold); color: var(--gold); }

.progress-line { color: var(--ink-dim); font-size: 0.95rem; }

.hints { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.hint { text-align: center; }
.hint-note { flex-basis: 100%; font-size: 0.9rem; }

.pool { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.tile {
  min-width: 3.2rem;
  padding: 0.7rem 0.4rem;
  text-align: center;
  font-size: 1.35rem;
  font-weight: 700;
  text-transform: lowercase;
}

.solved, .primer {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.solved { border-color: var(--good); }
.solved-word { font-size: 1.3rem; font-weight: 700; color: var(--good); }
.solved-note { color: var(--ink-dim); }
.solved-coins { color: var(--gold); font-weight: 600; }
.primer { border-color: var(--gold); }

@media (prefers-reduced-motion: no-preference) {
  button { transition: border-color 120ms ease; }
}