:root {
  color-scheme: light;
  --ink: #1a1a1a;
  --paper: #f4f1ea;
  --panel: #2a2622ee;
  --panel-text: #f7f2e8;
  --accent: #e8a54b;
  --muted: #b0a89c;
  font-family: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--paper);
  color: var(--ink);
  overflow: hidden;
}

.toolbar {
  position: fixed;
  z-index: 10;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--panel);
  color: var(--panel-text);
  box-shadow: 0 10px 40px #00000033;
  backdrop-filter: blur(10px);
  max-width: calc(100vw - 24px);
  flex-wrap: wrap;
  justify-content: center;
}

.brand {
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: var(--accent);
}

.tool {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.tool input[type="color"] {
  width: 28px;
  height: 28px;
  border: none;
  padding: 0;
  background: transparent;
  cursor: pointer;
}

.tool input[type="range"] {
  width: 90px;
  accent-color: var(--accent);
}

.tool-group {
  display: inline-flex;
  gap: 4px;
}

.tool-button,
.icon-button {
  border: 1px solid #ffffff24;
  border-radius: 999px;
  padding: 7px 10px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 11px;
  cursor: pointer;
}

.icon-button {
  min-width: 30px;
  padding-inline: 8px;
  font-size: 18px;
  line-height: 1;
}

.tool-button:hover,
.icon-button:hover,
.tool-button.active {
  border-color: var(--accent);
  color: var(--panel-text);
  background: #ffffff12;
}

.tool-button:focus-visible,
.icon-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.status {
  font-size: 12px;
  color: var(--panel-text);
  opacity: 0.9;
}

.hints {
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
}

.stage {
  position: fixed;
  inset: 0;
}

#board {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
}