:root {
  --bg: #f4f1ea;
  --fg: #1d1b18;
  --muted: #6b655c;
  --panel: #ffffff;
  --border: #d9d3c7;
  --accent: #a3238f;
  --danger: #b3261e;
  --screen-bg: #000000;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15140f;
    --fg: #ece8df;
    --muted: #a39d92;
    --panel: #201e18;
    --border: #3a362d;
    --accent: #e070cf;
    --danger: #ff8a80;
  }
}
:root[data-theme="dark"] {
  --bg: #15140f;
  --fg: #ece8df;
  --muted: #a39d92;
  --panel: #201e18;
  --border: #3a362d;
  --accent: #e070cf;
  --danger: #ff8a80;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}
main { max-width: 980px; margin: 0 auto; padding: 16px; }
header h1 { margin: 0 0 4px; font-size: 1.5rem; }
header .sub { color: var(--muted); font-weight: 400; font-size: 1rem; }
.note { color: var(--muted); margin: 0 0 16px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}
.drop {
  display: block;
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 28px 16px;
  text-align: center;
  cursor: pointer;
}
.drop.over { border-color: var(--accent); }
.drop input { display: none; }
.check { display: block; margin-top: 12px; color: var(--muted); }
.msg { min-height: 1.4em; margin: 10px 0 0; }
.msg.error { color: var(--danger); }

.screen-wrap {
  background: var(--screen-bg);
  border-radius: 6px;
  padding: 8px;
}
#screen {
  display: block;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  aspect-ratio: 4 / 3;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  outline: none;
}
.bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 10px 0;
}
.bar button {
  font: inherit;
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--fg);
  cursor: pointer;
}
.bar button:hover { border-color: var(--accent); }
.spacer { flex: 1; }
.status { color: var(--muted); font-variant-numeric: tabular-nums; }
.help { color: var(--muted); }
.diag {
  white-space: pre-wrap;
  background: var(--panel);
  border: 1px solid var(--danger);
  color: var(--danger);
  border-radius: 6px;
  padding: 12px;
  overflow-x: auto;
}

/* fullscreen + scaling */
.screen-wrap:fullscreen {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
}
.screen-wrap:fullscreen #screen {
  width: auto !important;
  height: 100vh;
  max-width: 100vw;
}
.screen-wrap[data-scale="integer"] #screen { max-width: none; }

/* settings */
.settings { display: flex; flex-wrap: wrap; gap: 12px; margin: 8px 0; }
.settings label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9rem; }
.settings select {
  font: inherit;
  padding: 4px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--fg);
  max-width: 100%;
}
.hint { font-size: 0.85rem; }

/* touch pad */
.touchpad {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  margin: 8px 0 12px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}
.touchpad[hidden] { display: none; }
.dpad {
  display: grid;
  grid-template-columns: repeat(3, 56px);
  grid-template-rows: repeat(3, 56px);
  gap: 6px;
}
.touchpad button {
  font: inherit;
  font-size: 1.2rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--fg);
  touch-action: none;
}
.touchpad button.held { border-color: var(--accent); background: var(--accent); color: var(--panel); }
.keys {
  display: grid;
  grid-template-columns: repeat(3, 56px);
  grid-auto-rows: 44px;
  gap: 6px;
  align-content: start;
}
.keys .big { grid-column: span 3; height: 56px; }