/* Layout: the world fills the window, and everything else floats on it as a card:
   the toolbar in the top-left corner, and the configs it opens on the right, which
   can be pulled down to the bottom of the window to show the library. */
:root {
  --bg: #f1f1ef;
  --surface: #fafaf9;
  --ink: #121212;
  --ink-2: #4c4c49;
  --ink-3: #6a6a66;
  --line: rgba(18, 18, 18, 0.1);
  --line-2: rgba(18, 18, 18, 0.2);
  --hover: rgba(18, 18, 18, 0.05);
  --pressed: rgba(18, 18, 18, 0.09);
  --error: #c43d29;
  --lift: 0 1px 2px rgba(18, 18, 18, 0.06), 0 14px 32px -18px rgba(18, 18, 18, 0.3);

  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --r: 2px;
  --edge: 16px;
  --card-w: 280px;
  --bar-h: 34px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b0b0b;
    --surface: #141414;
    --ink: #ececea;
    --ink-2: #b0b0ac;
    --ink-3: #8d8d89;
    --line: rgba(236, 236, 234, 0.1);
    --line-2: rgba(236, 236, 234, 0.2);
    --hover: rgba(236, 236, 234, 0.06);
    --pressed: rgba(236, 236, 234, 0.13);
    --error: #ff7a64;
    --lift: 0 14px 32px -14px rgba(0, 0, 0, 0.7);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0b0b0b;
  --surface: #141414;
  --ink: #ececea;
  --ink-2: #b0b0ac;
  --ink-3: #8d8d89;
  --line: rgba(236, 236, 234, 0.1);
  --line-2: rgba(236, 236, 234, 0.2);
  --hover: rgba(236, 236, 234, 0.06);
  --pressed: rgba(236, 236, 234, 0.13);
  --error: #ff7a64;
  --lift: 0 14px 32px -14px rgba(0, 0, 0, 0.7);
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  background: var(--bg);
  color: var(--ink);
  font: 400 12.5px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  overscroll-behavior: none;
}

button,
input,
output {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

button:disabled {
  cursor: default;
}

:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

.icon {
  display: block;
  flex: none;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.ant-only,
.eca-only {
  display: none !important;
}

[data-mode="ant"] .ant-only,
[data-mode="eca"] .eca-only {
  display: inline-grid !important;
}

.test-only {
  display: none !important;
}

[data-mode="test"] .test-only {
  display: block !important;
}

/* Test mode has no rule, library, palette or link. */
[data-mode="test"] .rule,
[data-mode="test"] .browse,
[data-mode="test"] .tall-toggle,
[data-mode="test"] .colors-group,
[data-mode="test"] #share {
  display: none !important;
}

.card {
  background: var(--surface);
  box-shadow: 0 0 0 1px var(--line-2), var(--lift);
}

/* ------------------------------------------------------------------ the world */

#gl,
#overlay {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

#overlay {
  cursor: crosshair;
  touch-action: none;
}

html.grab #overlay {
  cursor: grab;
}

html.grabbing #overlay {
  cursor: grabbing;
}

.progress {
  position: fixed;
  z-index: 40;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  pointer-events: none;
}

.progress span {
  display: block;
  width: var(--p, 0%);
  height: 100%;
  background: var(--ink);
}

/* ------------------------------------------------------------------ buttons */

/* Hover looks apply only where there is a pointer to hover with: touch screens
   would otherwise keep them on whatever was tapped last. */
.btn {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: var(--r);
  background: transparent;
  color: var(--ink-2);
}

@media (hover: hover) {
  .btn:hover:not(:disabled) {
    background: var(--hover);
    color: var(--ink);
  }
}

.btn:disabled {
  opacity: 0.3;
}

.btn[aria-pressed="true"],
.btn[aria-expanded="true"]:not(.btn-fold) {
  background: var(--pressed);
  color: var(--ink);
}

@media (hover: hover) {
  .btn[aria-pressed="true"]:hover:not(:disabled),
  .btn[aria-expanded="true"]:not(.btn-fold):hover:not(:disabled) {
    background: var(--pressed);
    color: var(--ink);
  }
}

.text-btn,
.ghost-btn {
  flex: none;
  height: 28px;
  padding: 0 10px;
  border: 0;
  border-radius: var(--r);
  background: transparent;
  color: var(--ink);
  font-size: 11.5px;
  font-weight: 500;
}

.ghost-btn {
  box-shadow: inset 0 0 0 1px var(--line-2);
}

@media (hover: hover) {
  .text-btn:hover,
  .ghost-btn:hover {
    background: var(--hover);
  }
}

/* ------------------------------------------------------------------ toolbar */

.toolbar {
  position: fixed;
  z-index: 10;
  top: var(--edge);
  left: var(--edge);
  display: flex;
  align-items: center;
  gap: 2px;
  height: var(--bar-h);
  padding: 0 3px;
}

.toolbar-body {
  display: flex;
  align-items: center;
  gap: 2px;
}

.toolbar-folded .toolbar-body {
  display: none;
}

.toolbar .btn {
  width: 28px;
  height: 28px;
}

.toolbar .btn-fold {
  width: 20px;
  color: var(--ink-3);
}

/* Play is the one solid control. */
#play {
  background: var(--ink);
  color: var(--surface);
}

#play:active {
  opacity: 0.85;
}

.sep {
  flex: none;
  width: 1px;
  height: 14px;
  margin: 0 4px;
  background: var(--line-2);
}

.types {
  display: flex;
  flex: none;
  box-shadow: inset 0 0 0 1px var(--line-2);
  border-radius: var(--r);
}

.types button {
  height: 24px;
  padding: 0 7px;
  border: 0;
  border-radius: var(--r);
  background: transparent;
  color: var(--ink-3);
  font-size: 11.5px;
  font-weight: 500;
}

.types button[aria-checked="true"] {
  background: var(--pressed);
  color: var(--ink);
}

@media (hover: hover) {
  .types button:hover {
    color: var(--ink);
  }
}

.tool-text {
  flex: none;
  height: 26px;
  padding: 0 7px;
  border: 0;
  border-radius: var(--r);
  background: transparent;
  color: var(--ink-2);
  font-size: 11.5px;
  font-weight: 500;
  white-space: nowrap;
}

.tool-text[aria-expanded="true"] {
  background: var(--pressed);
  color: var(--ink);
}

@media (hover: hover) {
  .tool-text:hover {
    background: var(--hover);
    color: var(--ink);
  }

  .tool-text[aria-expanded="true"]:hover {
    background: var(--pressed);
  }
}

.speed {
  position: relative;
  align-self: stretch;
  display: flex;
  align-items: center;
  padding: 0 8px;
}

.speed input {
  width: 60px;
}

/* The speed appears under the slider while it is pointed at, focused or dragged. */
#speed-out {
  position: absolute;
  top: calc(100% + 7px);
  left: calc(8px + 4.5px + (100% - 25px) * var(--f, 0));
  transform: translateX(-50%);
  padding: 4px 6px;
  background: var(--ink);
  color: var(--surface);
  font: 400 10.5px/1 var(--mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.12s;
  pointer-events: none;
}

.speed:has(:focus-visible) #speed-out,
.speed.dragging #speed-out {
  opacity: 1;
}

@media (hover: hover) {
  .speed:hover #speed-out {
    opacity: 1;
  }
}

/* Sliders: a hairline track and a small square thumb. */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 18px;
  margin: 0;
  background: transparent;
  cursor: pointer;
  --fill: 50%;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 1px;
  background: linear-gradient(to right, var(--ink) var(--fill), var(--line-2) var(--fill));
}

input[type="range"]::-moz-range-track {
  height: 1px;
  background: linear-gradient(to right, var(--ink) var(--fill), var(--line-2) var(--fill));
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 9px;
  height: 9px;
  margin-top: -4px;
  border: 0;
  border-radius: 0;
  background: var(--ink);
}

input[type="range"]::-moz-range-thumb {
  width: 9px;
  height: 9px;
  border: 0;
  border-radius: 0;
  background: var(--ink);
}

/* ------------------------------------------------------------------ counters */

.counters {
  position: fixed;
  z-index: 10;
  bottom: var(--edge);
  left: var(--edge);
  display: none;
  align-items: center;
  gap: 16px;
  height: 30px;
  padding: 0 12px;
  font: 400 11px/1 var(--mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.show-counters .counters {
  display: flex;
}

.count {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.count > span:first-child {
  color: var(--ink-3);
}

#rate {
  color: var(--ink-3);
}

#gen {
  width: 10ch;
  padding: 2px 0;
  border: 0;
  background: transparent;
  font: inherit;
}

@supports (field-sizing: content) {
  #gen {
    width: auto;
    min-width: 2ch;
    field-sizing: content;
  }
}

@media (hover: hover) {
  #gen:hover {
    box-shadow: inset 0 -1px 0 var(--line-2);
  }
}

#gen:focus {
  outline: none;
  box-shadow: inset 0 -1px 0 var(--ink);
}

/* ------------------------------------------------------------------ configs */

.configs {
  position: fixed;
  z-index: 20;
  top: var(--edge);
  right: var(--edge);
  display: flex;
  flex-direction: column;
  width: var(--card-w);
  max-height: calc(100dvh - 2 * var(--edge));
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.14s, transform 0.14s, visibility 0.14s;
}

.configs-open .configs {
  opacity: 1;
  visibility: visible;
  transform: none;
}

/* Pulled down, it reaches the bottom of the window and still floats over the world. */
.configs-tall .configs {
  bottom: var(--edge);
}

.configs-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
}

.tall-toggle {
  display: grid;
  place-items: center;
  flex: none;
  height: 22px;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: inset 0 1px 0 var(--line);
  color: var(--ink-3);
}

.tall-toggle .icon {
  width: 16px;
  height: 16px;
  transition: transform 0.14s;
}

.configs-tall .tall-toggle .icon {
  transform: rotate(180deg);
}

@media (hover: hover) {
  .tall-toggle:hover {
    background: var(--hover);
    color: var(--ink);
  }
}

/* With the library showing below it, the settings need a line under them. */
.configs-tall .more {
  box-shadow: inset 0 -1px 0 var(--line);
}

.disclosure {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 36px;
  padding: 0 10px 0 14px;
  border: 0;
  background: transparent;
  color: var(--ink-2);
  font-size: 12px;
  font-weight: 500;
}

.disclosure .icon {
  width: 16px;
  height: 16px;
  color: var(--ink-3);
  transition: transform 0.14s;
}

.disclosure[aria-expanded="true"] .icon {
  transform: rotate(180deg);
}

@media (hover: hover) {
  .disclosure:hover {
    background: var(--hover);
    color: var(--ink);
  }
}

.settings {
  box-shadow: inset 0 1px 0 var(--line);
}

/* ------------------------------------------------------------------ rule */

.rule {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  padding: 12px 12px 14px;
  box-shadow: inset 0 -1px 0 var(--line);
}

.rule-row {
  display: flex;
  align-items: center;
  gap: 4px;
}

.rule-row .btn {
  height: 34px;
}

.rule-field {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  cursor: text;
}

@media (hover: hover) {
  .rule-field:hover {
    border-color: var(--ink-3);
  }
}

.rule-field:focus-within {
  border-color: var(--ink);
}

.rule-field:has([aria-invalid="true"]) {
  border-color: var(--error);
}

#rule-text {
  flex: 1;
  width: 0;
  min-width: 0;
  padding: 0;
  border: 0;
  outline: none;
  background: transparent;
  font: 400 14px/1 var(--mono);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

#rule-text[aria-invalid="true"] {
  color: var(--error);
}

[data-mode="eca"] #rule-text {
  text-align: center;
}

.rule-name {
  flex: none;
  max-width: 60%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ink-3);
  font-size: 11.5px;
}

.rule-name:empty {
  display: none;
}

/* Life-like: two rows of neighbor counts */

.life-editor {
  display: grid;
  gap: 10px;
}

.nrow {
  display: grid;
  gap: 6px;
}

.nrow-label {
  font: 500 10px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.nkeys {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  gap: 3px;
}

.nkey {
  display: grid;
  justify-items: center;
  gap: 5px;
  padding: 7px 0 6px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: transparent;
  color: var(--ink-3);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

@media (hover: hover) {
  .nkey:hover {
    border-color: var(--ink-3);
    color: var(--ink);
  }
}

.nkey .n {
  font: 400 10px/1 var(--mono);
}

.glyph {
  display: grid;
  grid-template-columns: repeat(3, 4px);
  gap: 1px;
}

.glyph i {
  width: 4px;
  height: 4px;
  background: var(--line);
}

.glyph i.on,
.glyph i.mid.alive {
  background: var(--ink-3);
}

.glyph i.mid.dead {
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--ink-3);
}

.nkey[aria-pressed="true"] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--surface);
}

.nkey[aria-pressed="true"] .glyph i {
  background: color-mix(in srgb, var(--surface) 22%, transparent);
}

.nkey[aria-pressed="true"] .glyph i.on,
.nkey[aria-pressed="true"] .glyph i.mid.alive {
  background: var(--surface);
}

.nkey[aria-pressed="true"] .glyph i.mid.dead {
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--surface);
}

/* Elementary: Wolfram's eight tiles */

.tiles {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 3px;
}

.tile {
  display: grid;
  justify-items: center;
  gap: 1px;
  padding: 7px 0;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: transparent;
}

@media (hover: hover) {
  .tile:hover {
    border-color: var(--ink-3);
  }
}

.tile .tri,
.tile .out {
  display: grid;
  gap: 1px;
  padding: 1px;
  background: var(--line-2);
}

.tile .tri {
  grid-template-columns: repeat(3, 6px);
}

.tile .out {
  grid-template-columns: 6px;
}

.tile i {
  width: 6px;
  height: 6px;
  background: var(--surface);
}

.tile i.on,
.tile[aria-pressed="true"] .out i {
  background: var(--ink);
}

/* Ants and turmites */

.ant-editor {
  display: grid;
  gap: 12px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.chip {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  border-radius: var(--r);
  background: var(--chip);
  color: var(--chip-ink);
  box-shadow: inset 0 0 0 1px var(--line-2);
}

@media (hover: hover) {
  .chip:hover {
    box-shadow: inset 0 0 0 1px var(--ink-3);
  }
}

.machine-scroll {
  overflow-x: auto;
}

.machine {
  border-collapse: separate;
  border-spacing: 3px;
  margin: -3px;
}

.machine th {
  font-weight: 400;
  text-align: center;
}

.machine .swatch {
  display: inline-block;
  width: 18px;
  height: 10px;
  background: var(--chip);
  box-shadow: inset 0 0 0 1px var(--line-2);
}

.machine .state {
  display: inline-grid;
  place-items: center;
  width: 16px;
  height: 20px;
  color: var(--ink-2);
  font: 500 11px/1 var(--mono);
}

.op {
  display: flex;
  align-items: center;
  box-shadow: inset 0 0 0 1px var(--line-2);
  border-radius: var(--r);
}

.op button {
  display: grid;
  place-items: center;
  height: 28px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
}

@media (hover: hover) {
  .op button:hover {
    background: var(--hover);
  }
}

.op-write {
  width: 24px;
}

.op-write::before {
  content: "";
  width: 12px;
  height: 12px;
  background: var(--chip);
  box-shadow: inset 0 0 0 1px var(--line-2);
}

.op-turn {
  width: 26px;
}

.op-next {
  width: 22px;
  font: 400 11px/1 var(--mono);
  color: var(--ink-2) !important;
}

.machine-size {
  display: flex;
  gap: 20px;
}

.stepper {
  display: flex;
  align-items: center;
  gap: 5px;
}

.stepper-label {
  margin-right: 3px;
  color: var(--ink-2);
  font-size: 11.5px;
}

.stepper-value {
  min-width: 2ch;
  text-align: center;
  font: 400 11.5px/1 var(--mono);
}

.mini {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  padding: 0;
  border: 0;
  border-radius: var(--r);
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--line-2);
  color: var(--ink-2);
}

@media (hover: hover) {
  .mini:hover:not(:disabled) {
    box-shadow: inset 0 0 0 1px var(--ink-3);
    color: var(--ink);
  }
}

.mini:disabled {
  opacity: 0.3;
}

/* Nearby rules and the library */

.browse {
  padding: 8px 12px 12px;
}

.browse-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 30px;
  margin-bottom: 6px;
}

.lists {
  display: flex;
  gap: 14px;
}

.lists button {
  padding: 0;
  border: 0;
  background: none;
  color: var(--ink-3);
  font-size: 12px;
  font-weight: 500;
}

.lists button[aria-selected="true"] {
  color: var(--ink);
}

@media (hover: hover) {
  .lists button:hover {
    color: var(--ink);
  }
}

.browse-head .btn {
  width: 28px;
  height: 28px;
  margin-right: -6px;
}

.thumbs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.thumb {
  position: relative;
  aspect-ratio: 1;
  min-width: 0;
  padding: 0;
  border: 0;
  background: var(--bg);
  overflow: hidden;
}

.thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: pixelated;
}

.thumb-item {
  position: relative;
  min-width: 0;
}

.thumb-item .thumb {
  display: block;
  width: 100%;
}

.thumb-del,
.palette-del {
  position: absolute;
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  padding: 0;
  border: 0;
  border-radius: var(--r);
  background: var(--surface);
  color: var(--ink-2);
  box-shadow: 0 0 0 1px var(--line-2);
  opacity: 0;
}

.thumb-del {
  top: 4px;
  right: 4px;
}

.thumb-item:hover .thumb-del,
.palette-item:hover .palette-del,
.thumb-del:focus-visible,
.palette-del:focus-visible {
  opacity: 1;
}

/* Without a pointer to hover with, the delete buttons always show. */
@media (hover: none) {
  .thumb-del,
  .palette-del {
    opacity: 1;
  }
}

.empty {
  margin: 4px 0 2px;
  color: var(--ink-3);
  font-size: 12px;
}

.thumb canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  opacity: 0;
  transition: opacity 0.25s;
}

.thumb canvas.ready {
  opacity: 1;
}

/* The frame sits above the picture. */
.thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  box-shadow: inset 0 0 0 1px var(--line);
  pointer-events: none;
}

@media (hover: hover) {
  .thumb:hover::after {
    box-shadow: inset 0 0 0 1px var(--ink-3);
  }
}

.thumb[aria-current="true"]::after {
  box-shadow: inset 0 0 0 2px var(--ink);
}

/* Names appear only on a pointer. */
.thumb-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  padding: 4px 6px 5px;
  background: var(--surface);
  box-shadow: 0 -1px 0 var(--line);
  text-align: left;
  opacity: 0;
  transition: opacity 0.12s;
  pointer-events: none;
}

.thumb:focus-visible .thumb-cap {
  opacity: 1;
}

@media (hover: hover) {
  .thumb:hover .thumb-cap {
    opacity: 1;
  }
}

.thumb-name,
.thumb-sub {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.thumb-name {
  font-size: 10.5px;
  font-weight: 500;
  line-height: 1.3;
}

.thumb-sub {
  font: 400 9.5px/1.3 var(--mono);
  color: var(--ink-3);
}

/* ------------------------------------------------------------------ settings */

.group {
  padding: 12px 14px 14px;
  box-shadow: inset 0 -1px 0 var(--line);
}

.group:last-child {
  box-shadow: none;
}

.group-title {
  display: flex;
  justify-content: space-between;
  margin: 0 0 10px;
  font: 500 10px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.group-meta {
  letter-spacing: 0;
  text-transform: none;
}

.rows {
  display: grid;
  gap: 8px;
}

.row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 26px;
}

.row-label {
  flex: 1;
  min-width: 0;
  color: var(--ink-2);
  white-space: nowrap;
}

.row input[type="range"] {
  flex: none;
  width: 116px;
}

.row-value {
  flex: none;
  width: 4ch;
  text-align: right;
  font: 400 10.5px/1 var(--mono);
  font-variant-numeric: tabular-nums;
  color: var(--ink-3);
}

.segmented {
  display: flex;
  flex: none;
  box-shadow: inset 0 0 0 1px var(--line-2);
  border-radius: var(--r);
}

.segmented button {
  min-width: 28px;
  height: 26px;
  padding: 0 8px;
  border: 0;
  border-radius: var(--r);
  background: transparent;
  color: var(--ink-2);
  font-size: 11.5px;
  font-weight: 500;
  white-space: nowrap;
}

@media (hover: hover) {
  .segmented button:hover {
    color: var(--ink);
    background: var(--hover);
  }
}

.segmented button[aria-checked="true"] {
  background: var(--pressed);
  color: var(--ink);
}

.switch {
  position: relative;
  flex: none;
  width: 28px;
  height: 16px;
  padding: 0;
  border: 0;
  border-radius: var(--r);
  background: var(--line-2);
  transition: background 0.12s;
}

.switch span {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 10px;
  height: 10px;
  background: var(--surface);
  transition: transform 0.12s;
}

.switch[aria-checked="true"] {
  background: var(--ink);
}

.switch[aria-checked="true"] span {
  transform: translateX(12px);
}

.size {
  display: flex;
  align-items: center;
  gap: 4px;
}

.num {
  width: 52px;
  height: 26px;
  padding: 0 6px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: transparent;
  font: 400 11.5px/1 var(--mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  -moz-appearance: textfield;
}

@media (hover: hover) {
  .num:hover {
    border-color: var(--ink-3);
  }
}

.num:focus {
  outline: none;
  border-color: var(--ink);
}

.num::-webkit-inner-spin-button {
  display: none;
}

.times {
  color: var(--ink-3);
}

.btn-small {
  width: 26px;
  height: 26px;
}

.ghost-btn.wide {
  width: 100%;
  margin-top: 4px;
}

.swatches {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin-bottom: 10px;
}

.ant-swatch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 10px;
}

.ant-swatch .row-label {
  flex: none;
}

.palette-item {
  position: relative;
  display: flex;
  min-width: 0;
}

.palette-item .palette {
  flex: 1;
  padding-right: 24px;
}

.palette-del {
  top: 50%;
  right: 3px;
  transform: translateY(-50%);
}

.swatch-btn {
  width: 22px;
  height: 22px;
  padding: 0;
  border: 0;
  border-radius: var(--r);
  background: var(--chip);
  box-shadow: inset 0 0 0 1px var(--line-2);
}

.swatch-btn[aria-expanded="true"] {
  box-shadow: inset 0 0 0 1px var(--line-2), 0 0 0 1px var(--surface), 0 0 0 2px var(--ink);
}

@media (hover: hover) {
  .swatch-btn:hover {
    box-shadow: inset 0 0 0 1px var(--line-2), 0 0 0 1px var(--surface), 0 0 0 2px var(--ink);
  }
}

.palettes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 6px;
  margin: 0 -4px;
}

.palette {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding: 5px 4px;
  border: 0;
  border-radius: var(--r);
  background: transparent;
  color: var(--ink-2);
  font-size: 11.5px;
  text-align: left;
}

@media (hover: hover) {
  .palette:hover {
    background: var(--hover);
    color: var(--ink);
  }
}

.palette[aria-pressed="true"] {
  color: var(--ink);
  font-weight: 500;
}

.palette-strip {
  display: flex;
  flex: none;
  width: 36px;
  height: 10px;
  box-shadow: 0 0 0 1px var(--line);
}

.palette[aria-pressed="true"] .palette-strip {
  box-shadow: 0 0 0 1px var(--ink);
}

.palette-strip i {
  flex: 1;
}

.palette-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.links {
  display: grid;
  padding: 6px;
}

.link-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 30px;
  padding: 0 8px;
  border: 0;
  border-radius: var(--r);
  background: transparent;
  color: var(--ink-2);
  font-size: 12px;
  text-align: left;
  text-decoration: none;
}

@media (hover: hover) {
  .link-row:hover {
    background: var(--hover);
    color: var(--ink);
  }
}

/* ------------------------------------------------------------------ color picker */

.picker {
  position: fixed;
  z-index: 50;
  display: grid;
  gap: 8px;
  width: 224px;
  padding: 10px;
  background: var(--surface);
  box-shadow: 0 0 0 1px var(--line-2), var(--lift);
}

.sv {
  position: relative;
  height: 132px;
  background: linear-gradient(to top, #000, transparent), linear-gradient(to right, #fff, var(--hue, red));
  cursor: crosshair;
  touch-action: none;
}

.sv-thumb,
.hue-thumb {
  position: absolute;
  width: 10px;
  height: 10px;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 1.5px #fff, 0 0 0 2.5px rgba(0, 0, 0, 0.4);
  pointer-events: none;
}

.hue {
  position: relative;
  height: 10px;
  background: linear-gradient(to right, #f00, #ff0, #0f0, #0ff, #00f, #f0f, #f00);
  cursor: pointer;
  touch-action: none;
}

.hue-thumb {
  top: 50%;
}

.picker-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.picker-preview {
  width: 28px;
  height: 28px;
  box-shadow: inset 0 0 0 1px var(--line-2);
}

.picker-hex {
  flex: 1;
  min-width: 0;
  height: 28px;
  padding: 0 8px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: transparent;
  font: 400 12px/1 var(--mono);
  text-transform: lowercase;
}

.picker-hex:focus {
  outline: none;
  border-color: var(--ink);
}

.picker-swatches {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 3px;
}

.picker-swatch {
  aspect-ratio: 1;
  padding: 0;
  border: 0;
  box-shadow: inset 0 0 0 1px var(--line-2);
}

/* ------------------------------------------------------------------ toasts */

.toasts {
  position: fixed;
  z-index: 45;
  left: var(--edge);
  bottom: var(--edge);
  display: grid;
  justify-items: start;
  max-width: min(420px, calc(100vw - 2 * var(--edge)));
  pointer-events: none;
}

.show-counters .toasts {
  bottom: calc(var(--edge) + 38px);
}

.toast {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 12px;
  background: var(--ink);
  color: var(--surface);
  font-size: 12px;
  line-height: 1.4;
  pointer-events: auto;
  animation: toast-in 0.16s ease-out both;
}

.toast:has(button) {
  padding-right: 6px;
}

.toast.leaving {
  animation: toast-out 0.16s ease-in both;
}

.toast-action {
  flex: none;
  height: 24px;
  padding: 0 8px;
  border: 0;
  border-radius: var(--r);
  background: var(--surface);
  color: var(--ink);
  font-size: 11.5px;
  font-weight: 500;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
}

@keyframes toast-out {
  to {
    opacity: 0;
  }
}

/* ------------------------------------------------------------------ dialogs */

.dialog {
  width: min(400px, calc(100vw - 32px));
  max-height: calc(100dvh - 48px);
  padding: 0;
  border: 0;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 0 0 1px var(--line-2), 0 30px 80px -24px rgba(0, 0, 0, 0.4);
}

.dialog::backdrop {
  background: rgba(0, 0, 0, 0.28);
}

.dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 8px 0 18px;
}

.dialog-head h2 {
  margin: 0;
  font-size: 12.5px;
  font-weight: 500;
}

.dialog-head form {
  margin: 0;
}

.shortcuts {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 8px 16px;
  margin: 0;
  padding: 10px 18px 18px;
}

.shortcuts dt {
  display: flex;
  justify-content: flex-end;
  gap: 3px;
  color: var(--ink-2);
  white-space: nowrap;
}

.shortcuts dd {
  margin: 0;
  color: var(--ink-2);
}

kbd {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  font: 400 10.5px/1 var(--mono);
  color: var(--ink);
}

.link-row kbd {
  min-width: 18px;
  height: 18px;
  color: var(--ink-3);
}

.link-copy {
  display: flex;
  gap: 6px;
  padding: 10px 18px 18px;
}

.link-copy input {
  flex: 1;
  min-width: 0;
  height: 30px;
  padding: 0 8px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background: transparent;
  font: 400 11.5px/1 var(--mono);
}

/* ------------------------------------------------------------------ narrow windows */

/* The toolbar spans the top in two rows, and the configs open as a sheet from the bottom. */
@media (max-width: 640px) {
  :root {
    --edge: 8px;
  }
  .toolbar {
    top: calc(var(--edge) + env(safe-area-inset-top));
    right: var(--edge);
    align-items: flex-start;
    height: auto;
    padding: 3px;
  }
  .toolbar-folded .toolbar {
    right: auto;
  }
  .toolbar-body {
    flex: 1;
    flex-wrap: wrap;
    row-gap: 3px;
    min-width: 0;
  }
  .toolbar-body > * {
    order: 5;
  }
  .types {
    order: 1;
  }
  #reset {
    order: 2;
    margin-left: auto;
  }
  #configs-toggle {
    order: 3;
  }
  .toolbar-body::before {
    content: "";
    order: 4;
    flex-basis: 100%;
  }
  .toolbar-body > .sep {
    display: none;
  }
  .toolbar .btn-fold {
    height: 28px;
  }
  .speed {
    flex: 1;
    min-width: 0;
  }
  .speed input {
    flex: 1;
    min-width: 0;
    width: auto;
  }
  .configs {
    top: auto;
    left: var(--edge);
    right: var(--edge);
    bottom: calc(var(--edge) + env(safe-area-inset-bottom));
    width: auto;
    max-height: min(60dvh, 560px);
    transform: translateY(4px);
  }
  /* Pulled up to just under the toolbar. */
  .configs-tall .configs {
    max-height: calc(100dvh - 92px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    height: calc(100dvh - 92px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
  }
  .counters,
  .toasts {
    bottom: calc(var(--edge) + env(safe-area-inset-bottom));
  }
  .show-counters .toasts {
    bottom: calc(var(--edge) + 38px + env(safe-area-inset-bottom));
  }
  .configs-open .toasts {
    bottom: auto;
    top: calc(80px + env(safe-area-inset-top));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* ------------------------------------------------------------------ test mode */

.test-panel {
  padding: 12px 14px 14px;
  box-shadow: inset 0 -1px 0 var(--line);
}

.test-panel .group-title {
  margin-top: 4px;
}

.test-panel .group-title ~ .group-title {
  margin-top: 16px;
}

.test-log {
  display: grid;
  gap: 8px;
}

.log-entry {
  display: grid;
  gap: 4px;
  opacity: 0.55;
}

.log-entry.latest {
  opacity: 1;
}

.log-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
}

.log-code {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font: 400 11.5px/1.3 var(--mono);
  font-variant-numeric: tabular-nums;
}

.log-meta {
  flex: none;
  color: var(--ink-3);
  font-size: 11px;
}

.log-rule {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
}

.log-rule i {
  width: 8px;
  height: 8px;
  box-shadow: inset 0 0 0 1px var(--line-2);
}

.latest .log-rule i {
  width: 10px;
  height: 10px;
}

#test-palettes {
  margin-top: 8px;
}

.test-panel .row-value {
  width: 9ch;
  white-space: nowrap;
}

/* All nine inks, so the strip shows the whole gradient. */
#test-palettes .palette-strip {
  width: 45px;
}

.test-panel .row input[type="range"] {
  width: 104px;
}