:root {
  --wall: #1b1916;
  --ink: #e9e1cf;
  --ink-dim: #a39a88;
  --accent: #c8432b;
}

* {
  box-sizing: border-box;
}

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

main {
  height: 100%;
  display: grid;
  place-items: center;
}

#print {
  display: block;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

#controls {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  max-width: calc(100vw - 32px);
  padding: 10px 16px;
  border-radius: 10px;
  background: rgba(20, 18, 16, 0.78);
  backdrop-filter: blur(6px);
  color: var(--ink);
  font: 13px/1.2 ui-sans-serif, system-ui, sans-serif;
  opacity: 0;
  transition: opacity 0.6s;
}

#controls.visible,
#controls:hover {
  opacity: 1;
}

#controls label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-dim);
}

#controls input[type='range'] {
  width: 180px;
  accent-color: var(--accent);
}

#controls button,
#controls select {
  padding: 4px 10px;
  border: 1px solid #4a443c;
  border-radius: 6px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}

#controls button.on {
  border-color: var(--accent);
  background: var(--accent);
}

#readout {
  min-width: 18em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

#controls .seed {
  color: var(--ink-dim);
}

#controls .seed code {
  color: var(--ink);
  font: 12px ui-monospace, monospace;
  user-select: all;
}

#gloss {
  position: fixed;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-width: calc(100vw - 32px);
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(20, 18, 16, 0.88);
  color: var(--ink);
  font: 13px/1.3 ui-sans-serif, system-ui, sans-serif;
  pointer-events: none;
}

#gloss[hidden] {
  display: none;
}

#gloss .jp {
  font: 600 18px 'Noto Serif CJK JP', 'Noto Serif JP', serif;
}

#gloss .reading {
  color: var(--ink-dim);
  font-style: italic;
}