:root {
  color-scheme: light;
  --ink: #322735;
  --muted: #766579;
  --paper: #fff2f8;
  --panel: #ffffff;
  --line: #ead2df;
  --accent: #d95f98;
  --accent-2: #8e73d8;
  --sun: #f6c75c;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: ui-rounded, "SF Pro Rounded", "Noto Sans TC", "PingFang TC", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 18px 18px, rgba(50, 39, 53, 0.08) 1.3px, transparent 1.6px) 0 0 / 22px 22px,
    linear-gradient(135deg, rgba(217, 95, 152, 0.16), transparent 32%),
    linear-gradient(225deg, rgba(142, 115, 216, 0.12), transparent 36%),
    linear-gradient(0deg, rgba(255, 255, 255, 0.55), transparent 45%),
    var(--paper);
}

button {
  font: inherit;
}

.app-shell {
  width: min(1220px, 100%);
  margin: 0 auto;
  padding: 18px;
}

.game-panel {
  display: grid;
  gap: 12px;
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 64px;
}

h1 {
  margin: 0;
  font-size: clamp(1.45rem, 4vw, 2rem);
  line-height: 1.08;
  letter-spacing: 0;
  text-shadow: 2px 2px 0 rgba(255, 255, 255, 0.82);
}

p {
  margin: 5px 0 0;
  color: var(--muted);
}

.top-actions,
.mode-tabs,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.top-actions button,
.mode-tabs button,
.button-row button {
  min-height: 42px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 2px 0 rgba(34, 36, 42, 0.08);
  transition:
    transform 120ms ease,
    border-color 120ms ease;
}

.top-actions button {
  width: 44px;
  padding: 0;
  font-size: 1.12rem;
}

.mode-tabs button,
.button-row button {
  padding: 9px 13px;
}

.top-actions button:hover,
.mode-tabs button:hover,
.button-row button:hover {
  transform: translateY(-1px);
  border-color: rgba(45, 125, 136, 0.65);
}

.mode-tabs button.active,
.button-row button.active,
.button-row button.primary-action {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.button-row button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
  transform: none;
}

.button-row button.primary-action {
  min-width: 100%;
  font-weight: 800;
}

.action-group {
  border-color: rgba(246, 199, 92, 0.78);
  background: rgba(255, 250, 224, 0.86);
}

.treasure-controls .button-row button {
  min-width: 96px;
}

.pad-controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(46px, 1fr));
}

.pad-controls button {
  min-width: 0;
  min-height: 46px;
  padding: 0;
  font-size: 1.2rem;
  font-weight: 900;
}

.stage-wrap {
  width: 100%;
  display: grid;
  place-items: center;
}

canvas {
  width: min(100%, 1120px);
  height: auto;
  aspect-ratio: 16 / 10;
  display: block;
  border: 2px solid rgba(50, 39, 53, 0.92);
  border-radius: 8px;
  background: #f8efe2;
  box-shadow:
    0 18px 38px rgba(96, 53, 83, 0.16),
    0 2px 0 rgba(255, 255, 255, 0.76) inset;
  touch-action: none;
}

.controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.control-group {
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 252, 254, 0.88);
}

.control-group > span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.hidden {
  display: none;
}

@media (max-width: 760px) {
  .app-shell {
    padding: 12px;
  }

  .top-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .controls {
    grid-template-columns: 1fr;
  }

  .mode-tabs button,
  .button-row button {
    flex: 1 1 auto;
  }

  .treasure-controls .button-row button {
    min-width: 0;
  }
}