/* Color Palette Generator: dark theme, mobile first. */

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-2: #273449;
  --line: #334155;
  --line-strong: #475569;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #f9a8d4;
  --accent-strong: #fbcfe8;
  --accent-soft: rgb(249 168 212 / 0.14);
  --on-accent: #0f172a;
  --pass: #86efac;
  --fail: #fca5a5;
  --warn: #fcd34d;
  --radius: 12px;
  --radius-lg: 16px;
  --control: 42px;
  --shadow: 0 1px 2px rgb(2 6 23 / 0.3), 0 10px 30px rgb(2 6 23 / 0.35);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --fast: 150ms;
  --slow: 250ms;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}

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

[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

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

.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  flex: none;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.offscreen {
  position: fixed;
  top: 0;
  left: -9999px;
  opacity: 0;
}

/* ---------- Page layout ---------- */

.app {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto minmax(0, 1fr) auto auto;
  grid-template-areas: "top" "controls" "work" "tools" "foot";
  gap: 10px;
  max-width: 1600px;
  height: 100vh;
  height: 100dvh;
  min-height: 560px;
  margin: 0 auto;
  padding: max(10px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right))
    max(6px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

/* ---------- Header ---------- */

.topbar {
  grid-area: top;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  margin-right: auto;
}

.logo {
  flex: none;
  width: 34px;
  height: 34px;
}

.brand h1 {
  margin: 0;
  font-size: 16px;
  font-weight: 750;
  line-height: 1.15;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.hint {
  display: none;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--control);
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.1;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: background-color var(--fast) var(--ease), border-color var(--fast) var(--ease),
    color var(--fast) var(--ease), transform var(--fast) var(--ease);
}

.btn:hover {
  border-color: var(--line-strong);
  background: var(--surface-2);
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  border-color: var(--line);
  background: var(--surface);
  opacity: 0.45;
  cursor: default;
  transform: none;
}

.btn[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.btn.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--on-accent);
}

.btn.primary:hover {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
}

.btn.wide {
  width: 100%;
}

.btn.lang {
  min-width: 46px;
  padding: 0 10px;
  letter-spacing: 0.06em;
}

.icon-btn {
  display: inline-grid;
  flex: none;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background-color var(--fast) var(--ease), color var(--fast) var(--ease);
}

.icon-btn:hover {
  background: var(--surface-2);
  color: var(--text);
}

.icon-btn:disabled {
  background: transparent;
  opacity: 0.4;
  cursor: default;
}

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

.controls {
  grid-area: controls;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas: "mode count" "base base";
  gap: 8px 10px;
  align-items: end;
}

.field {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.field-mode {
  grid-area: mode;
}

.field-count {
  grid-area: count;
}

.field-base {
  grid-area: base;
  position: relative;
}

.field-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.field-error {
  margin: 0;
  color: var(--fail);
  font-size: 12px;
}

.field-base .field-error {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 5;
  padding: 5px 10px;
  border: 1px solid var(--fail);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

select,
.input,
.base-input,
.stepper {
  height: var(--control);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--surface);
  transition: border-color var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
}

select {
  width: 100%;
  min-width: 0;
  padding: 0 36px 0 12px;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-position: right 12px center;
  background-repeat: no-repeat;
  background-size: 16px;
  font-size: 14px;
  cursor: pointer;
}

select:hover,
.input:hover,
.base-input:hover {
  border-color: var(--line-strong);
}

select:focus-visible,
.input:focus-visible,
.base-input:focus-within {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgb(249 168 212 / 0.22);
}

.input {
  width: 100%;
  padding: 0 12px;
  font-family: var(--mono);
  font-size: 14px;
}

.input[aria-invalid="true"],
.base-input.is-invalid {
  border-color: var(--fail);
}

.base-input {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding-left: 10px;
}

.base-input input {
  flex: 1;
  min-width: 0;
  height: 100%;
  padding: 0;
  border: 0;
  outline: none;
  background: transparent;
  font-family: var(--mono);
  font-size: 14px;
}

.base-input input::placeholder {
  color: var(--muted);
  font-family: var(--font);
  opacity: 1;
}

.base-chip {
  flex: none;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: var(--chip, transparent);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.22);
}

.base-chip.is-auto {
  background: conic-gradient(#f87171, #fbbf24, #a3e635, #34d399, #22d3ee, #818cf8, #e879f9, #f87171);
}

.stepper {
  display: inline-flex;
  align-items: center;
}

.stepper output {
  min-width: 24px;
  font-weight: 700;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* ---------- Tools (a tab bar on phones) ---------- */

.tools {
  grid-area: tools;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 2px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.tools .btn {
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  min-height: 50px;
  padding: 4px 2px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  font-size: 11px;
}

.tools .btn span {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tools .btn:hover {
  background: var(--surface-2);
  color: var(--text);
}

.tools .btn[aria-pressed="true"] {
  background: var(--accent-soft);
  color: var(--accent);
}

.tools .btn:disabled {
  background: transparent;
}

/* ---------- Swatches ---------- */

.workspace {
  grid-area: work;
  display: flex;
  gap: 16px;
  min-width: 0;
  min-height: 0;
}

.swatches {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow), 0 0 0 1px rgb(255 255 255 / 0.06);
  list-style: none;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

.swatch {
  position: relative;
  display: grid;
  flex: 1 1 0;
  min-width: 0;
  min-height: 0;
  background: var(--swatch);
  color: var(--ink);
  transition: background-color var(--slow) var(--ease), color var(--slow) var(--ease),
    transform var(--slow) var(--ease);
}

.swatch-face {
  grid-area: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 1px;
  width: 100%;
  min-width: 0;
  min-height: 0;
  padding: 0 182px 0 16px;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.swatch-face:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: -6px;
  border-radius: 12px;
}

.swatch-hex {
  font-size: 18px;
  font-weight: 750;
  line-height: 1.15;
  letter-spacing: 0.05em;
  font-variant-numeric: tabular-nums;
}

.swatch-name {
  max-width: 100%;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  text-overflow: ellipsis;
  opacity: 0.8;
}

.swatch-tools {
  grid-area: 1 / 1;
  display: flex;
  align-self: center;
  justify-self: end;
  gap: 2px;
  padding-right: 6px;
  pointer-events: none;
}

.tool {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  pointer-events: auto;
  transition: background-color var(--fast) var(--ease), opacity var(--fast) var(--ease);
}

.tool:hover,
.is-locked .tool-lock {
  background: rgb(15 23 42 / 0.12);
}

.ink-light .tool:hover,
.ink-light.is-locked .tool-lock {
  background: rgb(255 255 255 / 0.16);
}

.tool:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 0;
}

.tool-grip {
  cursor: grab;
}

.swatch.is-selected::after {
  content: "";
  position: absolute;
  inset: 0;
  box-shadow: inset 0 0 0 3px var(--ink);
  opacity: 0.55;
  pointer-events: none;
}

.swatches.is-sorting {
  cursor: grabbing;
}

.swatch.is-dragging {
  z-index: 2;
  box-shadow: 0 14px 34px rgb(2 6 23 / 0.5);
  transition: none;
}

.swatches.no-anim .swatch {
  transition: none;
}

/* ---------- Side panel (a bottom sheet below 1080px) ---------- */

.panel {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 640px;
  max-height: 72vh;
  /* On phones the sheet stops below the palette settings, so they stay usable. */
  max-height: min(72dvh, max(50dvh, calc(100dvh - 248px)));
  margin: 0 auto;
  padding: 12px 16px max(16px, env(safe-area-inset-bottom));
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 20px 20px 0 0;
  background: var(--surface);
  box-shadow: 0 -12px 40px rgb(2 6 23 / 0.55);
  animation: sheet-in var(--slow) var(--ease);
}

.panel:focus {
  outline: none;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: -2px -6px -4px 0;
}

.panel-head h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.panel-view {
  display: grid;
  gap: 14px;
}

.subhead {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
}

.hint-small {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.panel-sub {
  margin: 0;
  font-family: var(--mono);
  font-size: 13px;
}

.note {
  margin: 0;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgb(251 191 36 / 0.1);
  color: var(--warn);
  font-size: 12px;
}

.empty {
  margin: 0;
  padding: 18px 12px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

@keyframes sheet-in {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateX(16px);
  }
}

/* Picker */

.picker-preview {
  display: grid;
  align-content: end;
  gap: 2px;
  min-height: 92px;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: var(--swatch);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.08);
}

.picker-hex {
  font-size: 22px;
  font-weight: 750;
  letter-spacing: 0.05em;
}

.picker-name {
  font-family: var(--mono);
  font-size: 13px;
  opacity: 0.8;
}

.segmented {
  display: flex;
  gap: 4px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
}

.segmented button {
  flex: 1;
  min-height: 40px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color var(--fast) var(--ease), color var(--fast) var(--ease);
}

.segmented button:hover {
  color: var(--text);
}

.segmented button[aria-pressed="true"] {
  background: var(--surface-2);
  color: var(--text);
  box-shadow: 0 1px 3px rgb(2 6 23 / 0.45);
}

.sliders {
  display: grid;
  gap: 4px;
}

.slider {
  --thumb: #ffffff;
}

.slider-head {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}

.slider-name {
  color: var(--muted);
  font-weight: 600;
}

.slider-value {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.slider input[type="range"] {
  display: block;
  width: 100%;
  height: 40px;
  margin: 0;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  cursor: pointer;
}

.slider input[type="range"]:focus-visible {
  outline: none;
}

.slider input[type="range"]::-webkit-slider-runnable-track {
  height: 14px;
  border-radius: 999px;
  background: var(--track);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.14);
}

.slider input[type="range"]::-moz-range-track {
  height: 14px;
  border-radius: 999px;
  background: var(--track);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.14);
}

.slider input[type="range"]::-webkit-slider-thumb {
  width: 24px;
  height: 24px;
  margin-top: -5px;
  border: 3px solid #ffffff;
  border-radius: 50%;
  -webkit-appearance: none;
  appearance: none;
  background: var(--thumb);
  box-shadow: 0 1px 4px rgb(2 6 23 / 0.6);
}

.slider input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border: 3px solid #ffffff;
  border-radius: 50%;
  background: var(--thumb);
  box-shadow: 0 1px 4px rgb(2 6 23 / 0.6);
}

.slider input[type="range"]:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px var(--accent);
}

.slider input[type="range"]:focus-visible::-moz-range-thumb {
  box-shadow: 0 0 0 3px var(--accent);
}

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

.notation-list,
.shade-list,
.saved-list {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

.notation-list {
  gap: 4px;
}

.notation {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 40px;
  padding: 0 10px 0 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  text-align: left;
  cursor: pointer;
  transition: border-color var(--fast) var(--ease), background-color var(--fast) var(--ease);
}

.notation:hover {
  border-color: var(--line-strong);
  background: #131c31;
}

.notation-name {
  flex: none;
  width: 48px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.notation-value {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 12.5px;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.notation .icon {
  width: 16px;
  height: 16px;
  color: var(--muted);
}

/* Contrast checker */

.contrast-preview {
  padding: 16px 18px;
  border-radius: var(--radius);
  background: var(--sample-bg);
  color: var(--sample-fg);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.08);
  transition: background-color var(--fast) var(--ease), color var(--fast) var(--ease);
}

.sample-large {
  margin: 0;
  font-size: 40px;
  font-weight: 750;
  line-height: 1;
}

.sample-text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.35;
}

.contrast-pair {
  margin: 10px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  opacity: 0.85;
}

.ratio {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.ratio-label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.ratio-value {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.verdicts {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.verdicts th,
.verdicts td {
  padding: 6px 0;
  text-align: left;
}

.verdicts thead th {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.verdicts tbody tr {
  border-top: 1px solid var(--line);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px 3px 6px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.badge .icon {
  width: 14px;
  height: 14px;
  stroke-width: 2.5;
}

.badge.pass {
  background: rgb(134 239 172 / 0.14);
  color: var(--pass);
}

.badge.fail {
  background: rgb(252 165 165 / 0.12);
  color: var(--fail);
}

.chip-field {
  display: grid;
  gap: 6px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--swatch);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.22);
  cursor: pointer;
  transition: box-shadow var(--fast) var(--ease), transform var(--fast) var(--ease);
}

.chip:hover {
  transform: scale(1.06);
}

.chip .icon {
  width: 18px;
  height: 18px;
  stroke-width: 3;
  opacity: 0;
  transition: opacity var(--fast) var(--ease);
}

.chip[aria-pressed="true"] {
  box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--accent);
}

.chip[aria-pressed="true"] .icon {
  opacity: 1;
}

/* Shade scale */

.shade-list {
  gap: 3px;
}

.shade {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 40px;
  padding: 0 12px;
  border: 0;
  border-radius: 9px;
  background: var(--swatch);
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: transform var(--fast) var(--ease);
}

.shade:hover {
  transform: translateX(3px);
}

.shade-step {
  width: 36px;
  font-size: 13px;
  font-weight: 750;
  font-variant-numeric: tabular-nums;
}

.shade-base {
  padding: 2px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, currentColor 18%, transparent);
  font-size: 11px;
  font-weight: 700;
}

.shade-hex {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12.5px;
}

/* Saved palettes */

.saved-list {
  gap: 8px;
}

.saved-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.saved-load {
  display: grid;
  flex: 1;
  gap: 6px;
  min-width: 0;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  text-align: left;
  cursor: pointer;
  transition: border-color var(--fast) var(--ease);
}

.saved-load:hover {
  border-color: var(--line-strong);
}

.saved-load[aria-current="true"] {
  border-color: var(--accent);
}

.saved-strip {
  display: flex;
  height: 34px;
  overflow: hidden;
  border-radius: 8px;
}

.saved-strip span {
  flex: 1;
}

.saved-meta {
  color: var(--muted);
  font-size: 12px;
}

/* ---------- Export dialog ---------- */

.dialog {
  width: min(680px, calc(100vw - 24px));
  max-height: calc(100dvh - 24px);
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 24px 70px rgb(2 6 23 / 0.6);
}

.dialog[open] {
  animation: dialog-in var(--slow) var(--ease);
}

.dialog::backdrop {
  background: rgb(2 6 23 / 0.72);
}

@keyframes dialog-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
}

.dialog-body {
  display: grid;
  gap: 14px;
  padding: 16px;
}

.dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dialog-head h2 {
  margin: 0;
  font-size: 18px;
}

.code {
  max-height: 44vh;
  max-height: 44dvh;
  margin: 0;
  padding: 14px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  color: #cbd5e1;
  font: 12.5px/1.55 var(--mono);
  white-space: pre;
  tab-size: 2;
}

.export-preview {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
}

/* ---------- Toast and footer ---------- */

.toast {
  position: fixed;
  bottom: calc(96px + env(safe-area-inset-bottom));
  left: 50%;
  z-index: 40;
  max-width: calc(100vw - 32px);
  padding: 10px 16px;
  border-radius: 999px;
  background: #f8fafc;
  color: #0f172a;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 10px 30px rgb(2 6 23 / 0.5);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity var(--fast) var(--ease), transform var(--fast) var(--ease), visibility var(--fast);
}

.toast.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.footer {
  grid-area: foot;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  /* The 40px tap row reaches into the empty row gap above and the 6px page padding below. */
  margin: -8px 0 -6px;
  color: var(--muted);
  font-size: 12px;
}

.footer a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  margin: 0 -4px;
  padding: 0 4px;
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: rgb(249 168 212 / 0.5);
  text-underline-offset: 3px;
}

.footer a:hover {
  color: var(--accent);
}

/* ---------- Tablets and up ---------- */

@media (min-width: 720px) {
  .app {
    grid-template-rows: auto auto auto minmax(0, 1fr) auto;
    grid-template-areas: "top" "controls" "tools" "work" "foot";
    gap: 14px;
    padding-right: max(24px, env(safe-area-inset-right));
    padding-left: max(24px, env(safe-area-inset-left));
    padding-top: max(14px, env(safe-area-inset-top));
  }

  .logo {
    width: 36px;
    height: 36px;
  }

  .brand h1 {
    font-size: 20px;
  }

  .controls {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 12px;
  }

  .field-mode {
    width: 210px;
  }

  .field-base {
    width: 250px;
  }

  .tools {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0;
    border: 0;
    background: none;
  }

  .tools .btn {
    flex-direction: row;
    gap: 8px;
    min-height: var(--control);
    padding: 0 14px;
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text);
    font-size: 14px;
  }

  .tools .btn:hover {
    border-color: var(--line-strong);
  }

  .tools .btn[aria-pressed="true"] {
    border-color: var(--accent);
  }

  .tools .btn:disabled {
    background: var(--surface);
  }

  .swatches {
    flex-direction: row;
  }

  .swatch-face {
    align-items: center;
    justify-content: flex-end;
    padding: 16px 8px 26px;
    text-align: center;
  }

  .swatch-hex {
    font-size: 21px;
  }

  .swatch-name {
    font-size: 13px;
  }

  .swatch-tools {
    flex-direction: column;
    justify-self: center;
    gap: 4px;
    padding: 0;
  }

  .toast {
    bottom: calc(32px + env(safe-area-inset-bottom));
  }
}

@media (min-width: 720px) and (hover: hover) {
  .swatch .tool {
    opacity: 0;
  }

  .swatch:hover .tool,
  .swatch:focus-within .tool,
  .swatch.is-dragging .tool,
  .swatch.is-locked .tool-lock {
    opacity: 1;
  }
}

@media (min-width: 960px) {
  .hint {
    display: block;
  }
}

/* ---------- Desktop: settings and tools share a row, the panel docks right ---------- */

@media (min-width: 1080px) {
  .app {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-rows: auto auto minmax(0, 1fr) auto;
    grid-template-areas: "top top" "controls tools" "work work" "foot foot";
  }

  .tools {
    align-self: end;
    justify-content: flex-end;
  }

  .panel {
    position: static;
    z-index: auto;
    flex: none;
    width: 360px;
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    animation-name: panel-in;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}