:root {
  --bg: #0d0a1c;
  --panel: #1b1533;
  --panel-2: #251d45;
  --border: #3a2f66;
  --text: #f1edff;
  --muted: #a99fcf;
  --accent: #facc15;
  --accent-text: #1a1300;
  --danger: #f87171;
  --radius: 12px;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex;
  flex-direction: column;
}

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

button {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 7px 12px;
  cursor: pointer;
  white-space: nowrap;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 700; }
button.small { padding: 4px 10px; font-size: 0.85rem; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

[hidden] { display: none !important; }

/* ---------- top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.brand { margin: 0; font-size: 1.25rem; letter-spacing: 0.01em; }
.stats { display: flex; gap: 12px; }
.stat { background: var(--panel-2); border: 1px solid var(--border); border-radius: 999px; padding: 3px 12px; }
.stat.coins b { color: var(--accent); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-left: auto; }

/* ---------- stage ---------- */

main { flex: 1; display: flex; flex-direction: column; min-height: 0; }

.stage {
  position: relative;
  flex: 1;
  min-height: 220px;
  max-height: calc(100vh - 230px);
  aspect-ratio: auto;
}
body.playing .stage { max-height: none; }
#game { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

.hud {
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}
.hud > * {
  background: rgba(13, 10, 28, 0.75);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 10px;
  pointer-events: auto;
}
.hud .auto { margin-left: auto; cursor: pointer; user-select: none; }
#hud-hearts { letter-spacing: -2px; }

.hint {
  position: absolute;
  left: 50%;
  top: 52px;
  transform: translateX(-50%);
  margin: 0;
  max-width: calc(100% - 32px);
  background: rgba(13, 10, 28, 0.85);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 8px 14px;
  text-align: center;
}

.toast {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translate(-50%, 20px);
  max-width: calc(100% - 32px);
  background: var(--panel);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 8px 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- touch controls ---------- */

.touch {
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 8px;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}
.touch .pad { display: flex; gap: 8px; pointer-events: auto; }
.touch button {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  font-size: 1.3rem;
  background: rgba(37, 29, 69, 0.8);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}
.touch button.down { background: var(--accent); color: var(--accent-text); }
.touch .attack { background: rgba(220, 38, 38, 0.8); }

/* ---------- build bar ---------- */

.build-bar {
  background: var(--panel);
  border-top: 1px solid var(--border);
  padding: 8px 16px 10px;
  display: grid;
  gap: 8px;
}
.palette { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 2px; }
.tile-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 68px;
  padding: 6px 6px 4px;
  font-size: 0.75rem;
}
.tile-btn canvas { width: 32px; height: 32px; }
.tile-btn[aria-pressed="true"] { border-color: var(--accent); background: #3a2d10; box-shadow: 0 0 0 2px var(--accent) inset; }
.tile-btn.locked canvas, .tile-btn.locked span { opacity: 0.35; }
.tile-btn .cost {
  position: absolute;
  top: 2px;
  right: 4px;
  font-size: 0.7rem;
  color: var(--accent);
}
.tile-btn .lock { font-size: 0.7rem; color: var(--accent); }

.build-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.budget { display: flex; align-items: center; gap: 8px; }
.budget span { color: var(--muted); }
.meter { width: 120px; height: 10px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
#budget-fill { height: 100%; width: 0; background: linear-gradient(90deg, #22c55e, var(--accent), #ef4444); }
.boss-pick { display: flex; align-items: center; gap: 6px; color: var(--muted); }
.boss-pick select { background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; padding: 6px 8px; color: var(--text); }
#btn-route[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }

#scroll { width: 100%; accent-color: var(--accent); }
.route-status { margin: 0; color: var(--danger); min-height: 0; }
.route-status:empty { display: none; }

/* ---------- dialogs ---------- */

dialog {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0;
  width: min(640px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
}
dialog::backdrop { background: rgba(5, 3, 15, 0.7); }
.dlg { padding: 20px; display: grid; gap: 12px; }
.dlg h2 { margin: 0; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.dlg h3 { margin: 6px 0 0; font-size: 0.95rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.dlg p { margin: 0; }
.dlg-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }
.muted { color: var(--muted); }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }

.coins-pill { font-size: 0.95rem; background: var(--panel-2); border: 1px solid var(--border); border-radius: 999px; padding: 2px 12px; }
.coins-pill b { color: var(--accent); }

.shop-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 180px), 1fr)); gap: 10px; }
.shop-card { background: var(--panel-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; display: flex; flex-direction: column; gap: 6px; }
.shop-card p { color: var(--muted); font-size: 0.85rem; flex: 1; }

#code-input {
  width: 9ch;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-family: ui-monospace, Consolas, monospace;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 7px 10px;
}
.share-result { color: var(--muted); }
.big-code { font-size: 1.3rem; color: var(--accent); letter-spacing: 0.1em; }
.recent { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.recent li { display: flex; align-items: center; gap: 10px; background: var(--panel-2); border-radius: 10px; padding: 6px 10px; }
.recent li span { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.recent code { color: var(--accent); }

.results { text-align: center; }
.results h2 { justify-content: center; font-size: 1.6rem; }
.result-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.result-stats div { background: var(--panel-2); border-radius: var(--radius); padding: 12px 6px; display: flex; flex-direction: column; }
.result-stats b { font-size: 1.8rem; }
.result-stats .gold b { color: var(--accent); }
.results .dlg-actions { justify-content: center; }

.help { margin: 0; padding-left: 20px; display: grid; gap: 8px; }
kbd { background: var(--panel-2); border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 5px; padding: 0 5px; font-size: 0.85em; }

@media (max-width: 600px) {
  .topbar { padding: 8px 12px; }
  .brand { font-size: 1.05rem; }
  .actions { margin-left: 0; width: 100%; }
  .actions button { flex: 1; padding: 7px 6px; }
  .build-bar { padding: 8px 12px; }
  .stage { max-height: calc(100vh - 300px); }
}