* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: #1b2138;
  color: #e8ecf8;
  font-family: "Microsoft JhengHei", "PingFang TC", "Noto Sans CJK TC", sans-serif;
  overscroll-behavior: none;
}

#app {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 8px 0;
}

#screen {
  display: block;
  width: 480px;
  height: 320px;
  background: #000;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
  border: 3px solid #39456e;
  box-sizing: content-box;
}

#hint {
  margin: 0;
  padding: 0 16px;
  font-size: 14px;
  color: #aab4d4;
  text-align: center;
}

#load-errors {
  max-width: 480px;
  margin: 0 16px;
  padding: 8px 12px;
  background: #5c1f2b;
  border: 2px solid #e0606f;
  font-size: 14px;
  line-height: 1.5;
}

#touch {
  display: none;
  width: 100%;
  max-width: 480px;
  padding: 0 16px;
  justify-content: space-between;
  align-items: center;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

#touch button {
  appearance: none;
  border: 2px solid #5b6a9e;
  border-radius: 8px;
  background: #2b3556;
  color: #e8ecf8;
  font-size: 18px;
  font-weight: bold;
  touch-action: none;
}

#touch button.active { background: #55679f; }

.dpad {
  display: grid;
  grid-template-columns: repeat(3, 52px);
  grid-template-rows: repeat(3, 52px);
}
.dpad .up { grid-column: 2; grid-row: 1; }
.dpad .left { grid-column: 1; grid-row: 2; }
.dpad .right { grid-column: 3; grid-row: 2; }
.dpad .down { grid-column: 2; grid-row: 3; }

.actions { display: flex; gap: 14px; align-items: center; }
#touch .actions button { width: 68px; height: 68px; border-radius: 50%; }
#touch .actions .confirm { background: #7a3350; border-color: #c76a8e; margin-bottom: 28px; }

/* 手指操作的裝置才顯示觸控按鈕 */
@media (pointer: coarse) {
  #touch { display: flex; }
  #hint { display: none; }
}