:root {
  --bg: #1e2126;
  --panel: #262a31;
  --panel-border: #3a3f4a;
  --text: #d8dce4;
  --text-dim: #8b93a3;
  --accent: #41a6f6;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

#toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--panel-border);
}

.group {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-right: 12px;
  border-right: 1px solid var(--panel-border);
}
.group:last-child { border-right: none; }

button, select {
  background: #31363f;
  color: var(--text);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 5px 10px;
  font: inherit;
  cursor: pointer;
}
button:hover:not(:disabled), select:hover { background: #3a4049; }
button:disabled { opacity: 0.4; cursor: default; }
button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #0e141c;
  font-weight: 600;
}
button.primary {
  background: #2f7d3a;
  border-color: #3a9b48;
  font-weight: 600;
}
button.primary:hover { background: #3a9b48; }

.color-label {
  display: inline-flex;
  width: 32px;
  height: 32px;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
}
.color-label input[type="color"] {
  width: 150%;
  height: 150%;
  margin: -25%;
  padding: 0;
  border: none;
  cursor: pointer;
}

#palette {
  display: grid;
  grid-template-columns: repeat(8, 18px);
  grid-auto-rows: 18px;
  gap: 3px;
}
.swatch {
  width: 18px;
  height: 18px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 3px;
  cursor: pointer;
  padding: 0;
}
.swatch.selected {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

input[type="range"] { width: 90px; accent-color: var(--accent); }
#brush-size-label, #zoom-label {
  min-width: 2.4em;
  text-align: center;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

#stage {
  flex: 1;
  overflow: auto;
  display: grid;
  place-items: center;
  padding: 24px;
}

#view {
  image-rendering: pixelated;
  cursor: crosshair;
  touch-action: none;
  border: 1px solid var(--panel-border);
}

#status {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 6px 12px;
  background: var(--panel);
  border-top: 1px solid var(--panel-border);
  color: var(--text-dim);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 720px) {
  #status-hint { display: none; }
}