:root {
  --bg: #23252a;
  --panel: #2e3138;
  --text: #d6d8dc;
  --muted: #8d929b;
  --accent: #8fa3b8;
  --button: #3a3e47;
  --button-hover: #464b55;
  --outline: #4a4f59;

  --floor: #3a3d44;
  --floor-alt: #373a40;
  --wall: #5b5f68;
  --wall-edge: #4b4e56;
  --goal: #b69a6a;
  --box: #9c8466;
  --box-edge: #7a6750;
  --box-done: #7f9a7c;
  --box-done-edge: #637a61;
  --player: #8fa3b8;
  --player-edge: #6d7f92;
  --overlay-bg: rgba(35, 37, 42, 0.6);
}

[data-theme="light"] {
  --bg: #e6e6e3;
  --panel: #d8d8d4;
  --text: #33363b;
  --muted: #6f737a;
  --accent: #5f7389;
  --button: #cfcfca;
  --button-hover: #c3c3be;
  --outline: #b3b3ad;

  --floor: #cbcbc6;
  --floor-alt: #c6c6c1;
  --wall: #8d9097;
  --wall-edge: #7b7e85;
  --goal: #a3834f;
  --box: #b39a79;
  --box-edge: #8f7a5f;
  --box-done: #93ab8f;
  --box-done-edge: #738c70;
  --player: #6f8399;
  --player-edge: #56677a;
  --overlay-bg: rgba(230, 230, 227, 0.65);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.app {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  max-width: 720px;
  height: 100%;
  margin: 0 auto;
  padding: 16px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 12px;
  flex-wrap: wrap;
}

h1 {
  margin: 0 auto 0 0;
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.level-picker {
  display: flex;
  align-items: center;
  gap: 6px;
}

button, select {
  font: inherit;
  color: var(--text);
  background: var(--button);
  border: 1px solid var(--outline);
  border-radius: 6px;
  padding: 6px 14px;
  cursor: pointer;
}

button:hover, select:hover { background: var(--button-hover); }
button:disabled { opacity: 0.4; cursor: default; }
button.icon { padding: 4px 12px; font-size: 1.2rem; line-height: 1; }
button.hidden { display: none; }

.stats {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  background: var(--panel);
  border-radius: 8px;
  padding: 8px 16px;
}

.stats > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 52px;
}

.stats .label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.stats span:last-child {
  font-variant-numeric: tabular-nums;
  font-size: 1.1rem;
}

.board-wrap {
  position: relative;
  flex: 1;
  width: 100%;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

canvas { display: block; }

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--overlay-bg);
  border-radius: 8px;
}

.overlay.hidden { display: none; }

.overlay-card {
  background: var(--panel);
  border: 1px solid var(--outline);
  border-radius: 10px;
  padding: 20px 28px;
  text-align: center;
}

.overlay-card h2 { margin: 0 0 8px; font-weight: 600; }
.overlay-card p { margin: 0 0 16px; color: var(--muted); }

.controls { display: flex; gap: 10px; }

.dpad {
  display: none;
  grid-template-columns: repeat(3, 56px);
  grid-template-rows: repeat(2, 56px);
  gap: 6px;
}

.dpad button { font-size: 1.2rem; padding: 0; }
.dpad [data-dir="up"] { grid-column: 2; grid-row: 1; }
.dpad [data-dir="left"] { grid-column: 1; grid-row: 2; }
.dpad [data-dir="down"] { grid-column: 2; grid-row: 2; }
.dpad [data-dir="right"] { grid-column: 3; grid-row: 2; }

.help {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

@media (pointer: coarse) {
  .dpad { display: grid; }
  .help { display: none; }
}