body {
  background-color: rgb(150, 150, 150);
  color: #000;
  margin: 16px;
}

input,
select,
option,
button {
  color: inherit;
  background-color: #fff;
}

h1 {
  font-size: 1.25rem;
  margin: 0 0 16px;
}

#layout {
  display: grid;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

#sidebar {
  display: grid;
  gap: 16px;
  min-width: 0;
}

#controls,
#display {
  display: grid;
  gap: 16px;
}

.setting-grid {
  display: grid;
  gap: 10px;
}

.setting {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 110px;
  align-items: center;
  gap: 8px;
}

.setting input,
.setting select {
  box-sizing: border-box;
  min-width: 0;
  width: 100%;
}

.setting-value {
  align-items: center;
  display: flex;
  gap: 6px;
  min-width: 0;
}

.setting-value input {
  width: 64px;
}

.difficulty-buttons {
  display: grid;
  grid-column: 2;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.difficulty-buttons button {
  min-height: 32px;
}

#color-mode {
  display: grid;
  gap: 6px;
  margin: 0;
}

.mode-option {
  align-items: center;
  display: flex;
  font-weight: normal;
  gap: 6px;
}

.mode-option input {
  margin: 0;
}

#redraw-controls {
  display: grid;
  gap: 12px;
  margin: 0;
}

#redraw,
#toggle-auto-redraw {
  min-height: 32px;
}

#display {
  border-top: 1px solid #777;
  padding-top: 16px;
}

#canvas {
  border: 1px solid #000;
  display: block;
  height: auto;
  max-width: 100%;
}

label {
  font-weight: bold;
}

#color-values {
  border-collapse: collapse;
  border: 1px solid #fff;
  margin: 0;
  width: 100%;
}

#color-values th,
#color-values td {
  padding: 2px;
  border: 1px solid #fff;
}

#color-values tbody th,
#color-values tbody td {
  padding: 4px;
}

#color-values td {
  text-align: right;
}

@media (max-width: 720px) {
  #layout {
    grid-template-columns: minmax(0, 1fr);
  }

  #sidebar {
    max-width: 420px;
  }
}