:root {
  --bg: #0F0F1E;
  --panel: #1A1A2E;
  --panel-border: #2A2A3E;
  --text: #EEEEEE;
  --muted: #8A8A9E;
  --accent: #F1C40F;
  --grass: #2f8f3a;
  --water: #064b8e;
  --rock: #5f6872;
  --enclosed: #f1c40f;
  --tile: 56px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: center;
}

.header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  width: 100%;
}

.logo {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  background: var(--accent);
  display: grid;
  place-items: center;
  font-size: 36px;
  line-height: 1;
}

.title-block { display: flex; flex-direction: column; gap: 4px; }
.kicker { color: var(--muted); letter-spacing: 0.18em; font-size: 12px; }
.level-select {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 16px;
  min-width: 220px;
}

.stats { display: flex; gap: 8px; }
.stat {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 8px 14px;
  min-width: 70px;
  text-align: center;
}
.stat-label { color: var(--muted); font-size: 11px; letter-spacing: 0.15em; }
.stat-value { font-size: 22px; font-weight: 600; }
.stat-best { color: var(--accent); }

.rocks-strip {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
}

#rocks-label { font-size: 14px; }

.rocks-slots {
  display: flex;
  gap: 4px;
}
.rock-slot {
  width: 14px;
  height: 14px;
  border: 1px solid #3A3A4E;
  border-radius: 3px;
}
.rock-slot.filled { background: var(--rock); border-color: var(--rock); }

.tagline { color: var(--muted); text-align: right; font-size: 13px; }

.board-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.col-labels {
  display: grid;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  text-align: center;
}

.board-row {
  display: flex;
  align-items: stretch;
  gap: 6px;
}

.row-labels {
  display: grid;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  text-align: right;
  padding-right: 4px;
  align-items: center;
}
.row-labels > div { line-height: var(--tile); }

.board-grid {
  display: grid;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  gap: 1px;
}

.tile {
  width: var(--tile);
  height: var(--tile);
  display: grid;
  place-items: center;
  font-size: 30px;
  line-height: 1;
  user-select: none;
  font-family: system-ui, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
}
.tile.passable { background: var(--grass); cursor: pointer; }
.tile.passable.enclosed { background: var(--enclosed); }
.tile.water { background: var(--water); color: #EEEEEE; font-size: 28px; font-weight: 600; }
.tile.rock { background: var(--rock); cursor: pointer; }

.controls {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}
button {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
}
button:hover { background: #2D2D4E; }
button.primary { background: var(--text); color: var(--panel); }
button:disabled { color: var(--rock); cursor: not-allowed; }

dialog {
  border: 1px solid var(--panel-border);
  background: var(--panel);
  color: var(--text);
  border-radius: 10px;
  padding: 16px;
  max-width: 540px;
}
dialog::backdrop { background: rgba(0,0,0,0.6); }