:root {
  --bg: #0d0d0e;
  --ink: #ece8df;
  --muted: #6a665d;
  --dim: #3a3833;
  --line: #1f1d1a;
  --radius: var(--radius-sm, 2px);
  --game-focus: var(--border-focus, var(--ink));
  --serif: var(--font-serif, ui-serif, 'Iowan Old Style', 'Apple Garamond', Baskerville, 'Times New Roman', serif);
  --sans: var(--font-sans, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
  --mono: var(--font-mono, ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  width: 100%;
  max-width: 620px;
  margin: 0 auto;
  padding: 4rem 1.5rem 2rem;
}

footer {
  text-align: center;
  padding: 1.5rem 1rem 2rem;
  font-size: 0.78rem;
  color: var(--muted);
  font-family: var(--mono);
  letter-spacing: 0.02em;
}

.dim { color: var(--muted); }

.screen { display: none; }
.screen.active { display: block; animation: fadein 0.25s ease; }

@keyframes fadein {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.wordmark {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 2.6rem;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
  text-align: left;
}

.puzzle-no {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin: 0 0 2.5rem;
  text-align: left;
}

.rules {
  font-family: var(--serif);
  font-size: 1.15rem;
  margin: 0 0 2.5rem;
  color: var(--ink);
  max-width: 26rem;
}

.primary {
  display: inline-block;
  margin: 1.5rem 0 0;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  padding: 0.75rem 1.6rem;
  font-family: var(--sans);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, opacity 0.12s;
}
.primary:hover { background: var(--ink); color: var(--bg); }
.primary:active { transform: translateY(1px); }
.primary:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.primary:disabled:hover { background: transparent; color: var(--ink); }
.primary:focus-visible {
  outline: 1px solid var(--game-focus);
  outline-offset: 3px;
}

.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--dim);
  border-radius: var(--radius);
  padding: 0.55rem 1.05rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s;
}
.ghost:hover { border-color: var(--ink); }
.ghost:focus-visible {
  outline: 1px solid var(--game-focus);
  outline-offset: 3px;
}

.round-header { margin: 0 0 1.5rem; }

.round-counter {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ---------- pair row (base / pick swatches with names) ---------- */

.pair-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.pair-cell { display: flex; flex-direction: column; gap: 0.5rem; }

.big-swatch {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: var(--line);
  border: 1px solid var(--line);
}

.pair-name {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.02rem;
  margin: 0;
  color: var(--ink);
  line-height: 1.3;
  min-height: 1.3em;
}

.pair-name .placeholder {
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ---------- swatch book ---------- */

.starter-label {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
}

.starter-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin: 0 0 0.75rem;
}

.starter-chip {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  align-items: stretch;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  padding: 0.45rem;
  min-height: 7rem;
  cursor: pointer;
  text-align: left;
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.9rem;
}

.starter-chip:hover,
.starter-chip:focus-visible,
.starter-chip.is-selected {
  border-color: var(--ink);
  outline: none;
}

.starter-color {
  display: block;
  flex: 1;
  min-height: 4.75rem;
  border: 1px solid rgba(13, 13, 14, 0.2);
}

.book-toggle {
  display: inline-block;
  margin: 0 0 0.65rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.book-toggle:focus-visible {
  outline: 1px solid var(--game-focus);
  outline-offset: 3px;
}

.swatch-book {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 2px;
  background: var(--line);
  padding: 2px;
  border: 1px solid var(--line);
  margin: 0 0 0.5rem;
  outline: none;
}
.swatch-book:focus-visible {
  border-color: var(--ink);
}
.swatch-book.is-collapsed { display: none; }

.chip {
  position: relative;
  aspect-ratio: 1 / 1;
  border: none;
  padding: 0;
  cursor: pointer;
  background: var(--line);
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}

.chip:focus { outline: none; }
.chip:hover { z-index: 2; transform: scale(1.06); box-shadow: 0 0 0 1px var(--ink); }
.chip.is-preview {
  z-index: 2;
  transform: scale(1.04);
  box-shadow: 0 0 0 2px var(--muted), inset 0 0 0 2px rgba(13, 13, 14, 0.36);
}
.chip.is-selected {
  z-index: 3;
  transform: scale(1.06);
  box-shadow: 0 0 0 2px var(--ink);
}

.swatch-hover {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin: 0 0 0.5rem;
  min-height: 2.6em; /* v2: room for the note line under the name+cat+hex */
  font-variant-numeric: tabular-nums;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  column-gap: 0.5rem;
  row-gap: 0.2rem;
}
.swatch-hover .name {
  color: var(--ink);
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.92rem;
  letter-spacing: 0;
}
.swatch-hover .cat {
  /* v2: tradition tag in small italic muted text — declares the register. */
  color: var(--muted);
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.74rem;
  letter-spacing: 0;
}
.swatch-hover .hex {
  color: var(--muted);
}
.swatch-hover .note {
  /* v2: optional pigment-history gloss; takes its own row. */
  flex-basis: 100%;
  color: var(--muted);
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.78rem;
  letter-spacing: 0;
  line-height: 1.35;
}

#lock { margin-top: 0.75rem; }

.touch-hint {
  display: none;
  margin: 0.1rem 0 0.4rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
}

@media (hover: none), (pointer: coarse) {
  .touch-hint { display: block; }
}

/* ---------- reveal ---------- */

.reveal-block {
  display: none;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}
.reveal-block.visible { display: block; animation: fadein 0.25s ease; }

.critique {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.12rem;
  line-height: 1.5;
  margin: 0 0 0.85rem;
  max-width: 28rem;
  color: var(--ink);
}

.reveal-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  margin: 0;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* ---------- finale ---------- */

.grid-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line);
  margin: 0 0 1.5rem;
}

.grid-cell {
  position: relative;
  aspect-ratio: 1 / 2;
  display: flex;
  flex-direction: column;
}
.grid-cell > div { flex: 1; }

.total-line {
  font-family: var(--mono);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  margin: 0 0 0.6rem;
  font-variant-numeric: tabular-nums;
}

.emoji-grid {
  font-size: 1.4rem;
  letter-spacing: 0.25em;
  margin: 0 0 2rem;
  font-family: var(--mono);
}

.already-line {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.4rem;
  margin: 0 0 1.5rem;
}

.share-card-wrap {
  margin: 1rem 0 1.25rem;
  background: var(--line);
  padding: 1px;
}

.share-card-wrap canvas {
  display: block;
  width: 100%;
  height: auto;
  background: var(--bg);
}

.share-buttons {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.share-status {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  min-height: 1.2em;
  margin: 0.85rem 0 0;
  letter-spacing: 0.02em;
}

.next-puzzle {
  margin-top: 2rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

/* responsive */
@media (max-width: 480px) {
  main { padding: 2.5rem 1.25rem 2rem; }
  .wordmark { font-size: 2.1rem; }
  .rules { font-size: 1.05rem; }
  .critique { font-size: 1.02rem; }
  .swatch-book { grid-template-columns: repeat(6, 1fr); }
  .starter-row { gap: 0.35rem; }
  .starter-chip { min-height: 5.75rem; font-size: 0.78rem; padding: 0.35rem; }
  .starter-color { min-height: 3.8rem; }
  .pair-name { font-size: 0.95rem; }
}