/* Hallmark | macrostructure: Workbench | nav: masthead rule | footer: statement
 * tone: editorial atelier | theme: custom (porcelain paper, espresso ink, carmine accent, sage proof)
 * axes: light paper / high-contrast serif display / warm accent
 * pre-emit critique: P4 H4 E4 S4 R4 V4
 * All colour, type and spacing values come from tokens.css. */

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

html {
  overflow-x: clip;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-5);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  font-feature-settings: "tnum" 1;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
  min-width: 0;
}

h1 {
  font-size: var(--text-display);
  text-wrap: balance;
}

h2 {
  font-size: var(--text-2xl);
}

h3 {
  font-size: var(--text-xl);
  line-height: 1.15;
}

p {
  margin: 0;
}

a {
  color: inherit;
  text-decoration-thickness: var(--rule-hair);
  text-underline-offset: 0.2em;
}

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

:focus-visible {
  outline: var(--rule-strong) solid var(--color-sage);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -4rem;
  z-index: 20;
  padding: var(--space-3) var(--space-4);
  background: var(--color-ink);
  color: var(--color-on-ink);
  font-weight: 600;
  white-space: nowrap;
}

.skip-link:focus {
  top: var(--space-4);
}

/* Masthead */

.masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-6);
  max-width: var(--page-max);
  margin: 0 auto;
  padding: var(--space-4) var(--space-5) var(--space-3);
  border-bottom: var(--rule-hair) solid var(--color-ink);
  box-shadow: 0 4px 0 -3px var(--color-paper), 0 5px 0 -3px var(--color-ink);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}

.mark-ink {
  fill: var(--color-ink);
}

.mark-accent {
  fill: var(--color-accent);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-5);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list a {
  display: inline-block;
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  border-bottom: var(--rule-hair) solid transparent;
  transition: border-color var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}

.nav-list a:hover {
  border-bottom-color: var(--color-accent);
}

/* Studio */

.studio {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  grid-template-areas:
    "intro stage"
    "controls stage";
  align-content: start;
  gap: var(--space-6) var(--space-8);
  max-width: var(--page-max);
  margin: 0 auto;
  padding: var(--space-7) var(--space-5) var(--space-6);
}

.studio-intro {
  grid-area: intro;
  min-width: 0;
  animation: settle 600ms var(--ease-out) both;
}

.studio-controls {
  grid-area: controls;
  display: grid;
  gap: var(--space-5);
  min-width: 0;
}

.lede {
  margin-top: var(--space-5);
  max-width: 46ch;
  font-size: var(--text-lg);
  color: var(--color-muted);
}

@keyframes settle {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Form parts */

.field-group {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}

.field-group legend,
.field > label:not(.btn):not(.check-line),
.field-label {
  display: block;
  margin-bottom: var(--space-2);
  padding: 0;
  font-size: var(--text-sm);
  font-weight: 600;
}

.field {
  min-width: 0;
}

.field-row-split {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-5);
}

.hint {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-muted);
  max-width: var(--measure);
}

output {
  margin-left: var(--space-2);
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--color-accent-deep);
}

input[type="text"],
input[type="password"],
select,
textarea {
  width: 100%;
  min-width: 0;
  padding: var(--space-3) var(--space-3);
  border: var(--rule-hair) solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  background: var(--color-paper);
  color: var(--color-ink);
  font: inherit;
  font-size: var(--text-sm);
  transition: border-color var(--dur-base) var(--ease-out), background-color var(--dur-base) var(--ease-out);
}

input[type="text"]:hover,
input[type="password"]:hover,
select:hover,
textarea:hover {
  border-color: var(--color-ink);
}

input[type="text"]:disabled,
input[type="password"]:disabled,
select:disabled,
textarea:disabled {
  background: var(--color-surface);
  color: var(--color-muted);
  cursor: not-allowed;
}

input[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border-color: var(--color-error);
}

textarea,
#yc-src,
#yc-key,
#hex-input {
  font-family: var(--font-mono);
}

textarea {
  resize: vertical;
  line-height: 1.5;
}

.input-pair {
  display: flex;
  gap: var(--space-2);
}

.input-pair input {
  flex: 1 1 8rem;
}

/* Range inputs (labelled controls) */

input[type="range"]:not(.stage-range) {
  width: 100%;
  height: 28px;
  margin: 0;
  background: transparent;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

input[type="range"]:not(.stage-range)::-webkit-slider-runnable-track {
  height: 2px;
  background: var(--color-line-strong);
}

input[type="range"]:not(.stage-range)::-moz-range-track {
  height: 2px;
  background: var(--color-line-strong);
}

input[type="range"]:not(.stage-range)::-webkit-slider-thumb {
  width: 18px;
  height: 18px;
  margin-top: -8px;
  border: var(--rule-strong) solid var(--color-paper);
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  box-shadow: 0 0 0 1px var(--color-ink);
  appearance: none;
  -webkit-appearance: none;
  transition: transform var(--dur-fast) var(--ease-out);
}

input[type="range"]:not(.stage-range)::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: var(--rule-strong) solid var(--color-paper);
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  box-shadow: 0 0 0 1px var(--color-ink);
}

input[type="range"]:not(.stage-range):hover::-webkit-slider-thumb {
  background: var(--color-accent);
}

input[type="range"]:not(.stage-range):active::-webkit-slider-thumb {
  transform: scale(1.1);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: var(--rule-hair) solid var(--color-ink);
  border-radius: var(--radius-sm);
  background: var(--color-ink);
  color: var(--color-on-ink);
  font: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.btn:hover {
  background: var(--color-accent-deep);
  border-color: var(--color-accent-deep);
  color: var(--color-on-ink);
}

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

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn[aria-busy="true"] {
  cursor: progress;
  opacity: 0.7;
}

.btn[data-state="success"] {
  background: var(--color-sage);
  border-color: var(--color-sage);
  color: var(--color-on-ink);
}

.btn[data-state="error"] {
  background: var(--color-error);
  border-color: var(--color-error);
  color: var(--color-on-ink);
}

.btn-quiet {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-line-strong);
}

.btn-quiet:hover {
  background: var(--color-surface);
  border-color: var(--color-ink);
  color: var(--color-ink);
}

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

.file-btn:has(+ input:focus-visible) {
  outline: var(--rule-strong) solid var(--color-sage);
  outline-offset: 3px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

/* Segmented radios */

.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  border: var(--rule-hair) solid var(--color-ink);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.segmented label {
  position: relative;
  display: block;
}

.segmented input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.segmented span {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}

.segmented label + label span {
  border-left: var(--rule-hair) solid var(--color-ink);
}

.segmented span:hover {
  background: var(--color-surface);
}

.segmented input:checked + span {
  background: var(--color-ink);
  color: var(--color-on-ink);
}

.segmented input:focus-visible + span {
  outline: var(--rule-strong) solid var(--color-sage);
  outline-offset: -4px;
}

/* Presets */

.preset-list {
  display: grid;
  gap: var(--space-2);
}

.preset {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "chip name"
    "chip lab";
  align-items: center;
  column-gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: var(--rule-hair) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  transition: border-color var(--dur-base) var(--ease-out), background-color var(--dur-base) var(--ease-out);
}

.preset:hover {
  border-color: var(--color-ink);
}

.preset input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.preset:has(input:checked) {
  border-color: var(--color-ink);
  background: var(--color-surface);
  box-shadow: inset 3px 0 0 var(--color-accent);
}

.preset:has(input:focus-visible) {
  outline: var(--rule-strong) solid var(--color-sage);
  outline-offset: 3px;
}

.preset-chip {
  grid-area: chip;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-pill);
  background: var(--color-line);
  box-shadow: inset 0 0 0 1px var(--color-line-strong);
}

.preset-name {
  grid-area: name;
  font-size: var(--text-sm);
  font-weight: 600;
  overflow-wrap: anywhere;
}

.preset-lab {
  grid-area: lab;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

/* Stage */

.stage {
  grid-area: stage;
  position: sticky;
  top: var(--space-4);
  align-self: start;
  margin: 0;
  min-width: 0;
  animation: settle 700ms var(--ease-out) 100ms both;
}

.stage-frame {
  position: relative;
  width: min(100%, calc(82vh * 0.8));
  aspect-ratio: 4 / 5;
  margin-inline: auto;
  overflow: hidden;
  border: var(--rule-hair) solid var(--color-ink);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  touch-action: pan-y;
}

.stage-frame canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

#canvas-result {
  clip-path: inset(0 0 0 var(--split));
}

.stage-tag {
  position: absolute;
  top: var(--space-3);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-paper) 90%, transparent);
  color: var(--color-ink);
  font-size: var(--text-xs);
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
}

.stage-tag-left {
  left: var(--space-3);
}

.stage-tag-right {
  right: var(--space-3);
}

.stage-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--split);
  width: 0;
  pointer-events: none;
}

.stage-handle::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 -1px;
  width: 2px;
  background: var(--color-paper);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-ink) 45%, transparent);
}

.stage-grip {
  position: absolute;
  top: 50%;
  left: 0;
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  transform: translate(-50%, -50%);
  border: var(--rule-hair) solid var(--color-ink);
  border-radius: var(--radius-pill);
  background: var(--color-paper);
  color: var(--color-ink);
}

.stage-frame:has(.stage-range:focus-visible) .stage-grip {
  outline: var(--rule-strong) solid var(--color-sage);
  outline-offset: 3px;
}

.stage-range {
  position: absolute;
  inset: 0;
  z-index: 3;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  background: transparent;
  opacity: 0;
  cursor: ew-resize;
  touch-action: pan-y;
  appearance: none;
  -webkit-appearance: none;
}

.stage-range::-webkit-slider-runnable-track {
  height: 100%;
  background: transparent;
}

.stage-range::-webkit-slider-thumb {
  width: 2.75rem;
  height: 100vh;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 0;
}

.stage-range::-moz-range-track {
  height: 100%;
  background: transparent;
}

.stage-range::-moz-range-thumb {
  width: 2.75rem;
  height: 100%;
  border: 0;
  background: transparent;
}

.stage[data-sampling="true"] .stage-range {
  pointer-events: none;
}

.stage-picker {
  position: absolute;
  inset: 0;
  z-index: 4;
  cursor: crosshair;
}

.stage-picker:focus-visible {
  outline: var(--rule-strong) solid var(--color-sage);
  outline-offset: -6px;
}

.stage-ring {
  position: absolute;
  z-index: 2;
  border: var(--rule-strong) solid var(--color-paper);
  outline: var(--rule-hair) solid var(--color-ink);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.stage figcaption {
  margin: var(--space-3) auto 0;
  font-size: var(--text-xs);
  color: var(--color-muted);
  width: min(100%, calc(82vh * 0.8));
}

.status {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--space-5) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-muted);
  overflow-wrap: anywhere;
}

/* Bands */

.band {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: var(--space-8) var(--space-5);
  border-top: var(--rule-hair) solid var(--color-ink);
}

.band-head {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: var(--space-4) var(--space-8);
  align-items: end;
  margin-bottom: var(--space-7);
}

.band-head p {
  color: var(--color-muted);
  max-width: var(--measure);
}

.reading-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--space-6);
  align-items: start;
}

.reading-side {
  display: grid;
  gap: var(--space-5);
  min-width: 0;
}

.reading-grid > .plot-card {
  position: sticky;
  top: var(--space-4);
}

.plot-card {
  margin: 0;
  padding: var(--space-4);
  border: var(--rule-hair) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  min-width: 0;
}

.plot-card figcaption {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-muted);
  max-width: 60ch;
}

.plot-card svg {
  display: block;
  width: 100%;
  height: auto;
}

.plot-card-small svg {
  max-width: 420px;
  margin-inline: auto;
}

.arc-legend {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink);
}

.arc-grid {
  stroke: var(--color-line);
  stroke-width: 1;
}

.arc-ray {
  stroke: var(--color-line-strong);
  stroke-width: 1;
  stroke-dasharray: 4 4;
}

.arc-tick,
.arc-axis {
  fill: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.arc-axis {
  font-family: var(--font-body);
  font-size: 12px;
}

.arc-band {
  fill: var(--color-muted);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  paint-order: stroke;
  stroke: var(--color-surface);
  stroke-width: 4px;
}

.arc-swatch {
  stroke: var(--color-ink);
  stroke-width: 1;
}

.arc-swatch.is-top {
  stroke-width: 2.5;
}

.arc-rank {
  fill: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  paint-order: stroke;
  stroke: var(--color-paper);
  stroke-width: 3px;
  pointer-events: none;
}

.arc-ita {
  stroke: var(--color-accent);
  stroke-width: 2;
}

.arc-sample {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 2.5;
}

.arc-sample-dot {
  fill: var(--color-accent);
}

.arc-ita-label {
  fill: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  paint-order: stroke;
  stroke: var(--color-surface);
  stroke-width: 4px;
}

.compass-zone {
  stroke: var(--color-surface);
  stroke-width: 1;
}

.zone-cool {
  fill: var(--color-zone-cool);
}

.zone-neutral {
  fill: var(--color-zone-neutral);
}

.zone-warm {
  fill: var(--color-zone-warm);
}

.zone-olive {
  fill: var(--color-zone-olive);
}

.compass-zone.is-active {
  stroke: var(--color-ink);
  stroke-width: 2;
}

.compass-ring {
  fill: none;
  stroke: var(--color-line-strong);
  stroke-width: 1;
}

.compass-label.is-active {
  font-weight: 700;
  text-decoration: underline;
}

.compass-label {
  fill: var(--color-ink);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
}

.compass-tick,
.compass-axis {
  fill: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.compass-axis {
  font-family: var(--font-body);
  font-size: 11px;
}

.compass-vector {
  stroke: var(--color-accent);
  stroke-width: 1.5;
  stroke-dasharray: 3 3;
}

.metrics {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  margin: 0;
  border-top: var(--rule-hair) solid var(--color-ink);
}

.metrics dt,
.metrics dd {
  margin: 0;
  padding: var(--space-2) 0;
  border-bottom: var(--rule-hair) solid var(--color-line);
}

.metrics dt {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.metrics dd {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Ranking */

.shades-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4) var(--space-6);
  margin-bottom: var(--space-5);
}

.shades-controls .hint {
  margin-top: 0;
}

.ranking {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--rule-hair) solid var(--color-ink);
}

.ranking li {
  display: grid;
  grid-template-columns: 2rem 2.75rem minmax(0, 1.4fr) minmax(0, 1fr) minmax(5rem, 0.8fr) auto;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: var(--rule-hair) solid var(--color-line);
}

.rank-num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.rank-chip {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-sm);
  box-shadow: inset 0 0 0 1px var(--color-line-strong);
}

.rank-name {
  display: grid;
  min-width: 0;
}

.rank-name strong {
  font-size: var(--text-sm);
  font-weight: 600;
}

.rank-name span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.rank-de {
  display: grid;
  min-width: 0;
}

.rank-de strong {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
}

.rank-de span {
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.rank-bar {
  display: block;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--color-line);
  overflow: hidden;
}

.rank-bar i {
  display: block;
  height: 100%;
  background: var(--color-ink);
}

.top-flag {
  display: inline-block;
  margin-left: var(--space-2);
  padding: 0 var(--space-2);
  border: var(--rule-hair) solid var(--color-sage);
  border-radius: var(--radius-pill);
  color: var(--color-sage-deep);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  white-space: nowrap;
}

/* Panels and code */

.youcam-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
  align-items: start;
}

.youcam-grid-lower {
  margin-top: var(--space-6);
}

.panel {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-5);
  border: var(--rule-hair) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  min-width: 0;
}

.panel .btn-row {
  margin-top: 0;
}

.panel .hint {
  margin-top: 0;
}

.panel-live {
  margin-top: var(--space-6);
}

.live-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
  align-items: start;
}

.check-line {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 400;
}

.check-line input {
  flex: none;
  width: 1.15rem;
  height: 1.15rem;
  margin: 0.15rem 0 0;
  accent-color: var(--color-ink);
}

.hint[data-error="true"] {
  color: var(--color-error);
  font-weight: 500;
}

.live-result img {
  display: block;
  width: min(100%, 360px);
  height: auto;
  border: var(--rule-hair) solid var(--color-line-strong);
  border-radius: var(--radius-sm);
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2) var(--space-4);
}

.check-grid label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  overflow-wrap: anywhere;
}

.check-grid input {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0;
  accent-color: var(--color-ink);
}

.mono-line {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-muted);
  overflow-wrap: anywhere;
}

.code {
  margin: 0;
  padding: var(--space-4);
  max-height: 24rem;
  overflow: auto;
  border-radius: var(--radius-sm);
  background: var(--color-ink);
  color: var(--color-on-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  tab-size: 2;
}

.code.receipt {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.form-error {
  min-height: 1.2em;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-error);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.data-table caption {
  padding-bottom: var(--space-2);
  text-align: left;
  font-weight: 600;
}

.data-table th,
.data-table td {
  padding: var(--space-2) var(--space-3) var(--space-2) 0;
  border-bottom: var(--rule-hair) solid var(--color-line);
  text-align: left;
  vertical-align: top;
}

.data-table td.num {
  font-family: var(--font-mono);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.band-tag {
  display: inline-block;
  padding: 0 var(--space-2);
  border-radius: var(--radius-pill);
  border: var(--rule-hair) solid var(--color-line-strong);
  font-size: var(--text-xs);
  font-weight: 600;
  white-space: nowrap;
}

.band-tag[data-band="Priority"] {
  border-color: var(--color-accent);
  color: var(--color-accent-deep);
}

.band-tag[data-band="Maintain"] {
  border-color: var(--color-sage);
  color: var(--color-sage-deep);
}

.noscript-panel {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: var(--space-6) var(--space-5);
  overflow-x: auto;
}

/* Method */

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

.method-grid article {
  padding-top: var(--space-3);
  border-top: var(--rule-hair) solid var(--color-ink);
}

.method-grid h3 {
  margin-bottom: var(--space-3);
}

.method-grid p {
  font-size: var(--text-sm);
  color: var(--color-muted);
  max-width: 44ch;
}

/* Colophon */

.colophon {
  padding: var(--space-9) var(--space-5) var(--space-7);
  background: var(--color-ink);
  color: var(--color-on-ink);
}

.colophon-line {
  max-width: var(--page-max);
  margin: 0 auto var(--space-6);
  font-family: var(--font-display);
  font-size: var(--text-display);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.colophon-small {
  max-width: var(--page-max);
  margin: 0 auto;
  font-size: var(--text-sm);
  line-height: 1.7;
}

.colophon-small a {
  display: inline-block;
  color: var(--color-on-ink);
  white-space: nowrap;
}

.colophon-small a:hover {
  color: var(--color-on-ink);
  text-decoration-thickness: var(--rule-strong);
}

/* Responsive */

@media (max-width: 960px) {
  .studio {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "intro"
      "stage"
      "controls";
    gap: var(--space-5);
    padding-top: var(--space-6);
  }

  .stage {
    position: sticky;
    top: 0;
    z-index: 5;
    padding-block: var(--space-2);
    background: var(--color-paper);
    border-bottom: var(--rule-hair) solid transparent;
  }

  .stage[data-stuck="true"] {
    border-bottom-color: var(--color-line-strong);
  }

  .stage[data-stuck="true"] figcaption {
    display: none;
  }

  .stage-frame {
    width: auto;
    height: min(38vh, 340px);
  }

  .stage figcaption {
    width: min(100%, 560px);
    margin-inline: auto;
  }

  .band-head,
  .reading-grid,
  .live-grid,
  .youcam-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .reading-grid > .plot-card {
    position: static;
  }

  .method-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ranking li {
    grid-template-columns: 1.5rem 2.5rem minmax(0, 1fr) auto;
    grid-template-areas:
      "num chip name act"
      "num chip de de"
      "num chip bar bar";
    row-gap: var(--space-1);
  }

  .ranking li .rank-num {
    grid-area: num;
  }

  .ranking li .rank-chip {
    grid-area: chip;
  }

  .ranking li .rank-name {
    grid-area: name;
  }

  .ranking li .rank-de {
    grid-area: de;
  }

  .ranking li .rank-bar {
    grid-area: bar;
    width: 100%;
    margin-top: var(--space-1);
  }

  .ranking li .btn {
    grid-area: act;
  }
}

@media (max-width: 560px) {
  .arc-tick,
  .arc-axis {
    font-size: 19px;
  }

  .arc-band {
    font-size: 24px;
    stroke-width: 6px;
  }

  .arc-rank,
  .arc-ita-label {
    font-size: 18px;
  }

  .compass-label {
    font-size: 16px;
  }

  .compass-tick,
  .compass-axis {
    font-size: 14px;
  }

  .masthead,
  .studio,
  .band,
  .status,
  .colophon {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .field-grid,
  .check-grid,
  .method-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .band {
    padding-top: var(--space-7);
    padding-bottom: var(--space-7);
  }

  .panel {
    padding: var(--space-4);
  }

  .segmented {
    display: flex;
    width: 100%;
  }

  .segmented label {
    flex: 1 1 auto;
  }

  .segmented span {
    text-align: center;
    padding-inline: var(--space-3);
  }
}

@media (pointer: coarse), (max-width: 560px) {
  input[type="range"]:not(.stage-range) {
    height: 44px;
  }

  input[type="range"]:not(.stage-range)::-webkit-slider-thumb {
    width: 26px;
    height: 26px;
    margin-top: -12px;
  }

  input[type="range"]:not(.stage-range)::-moz-range-thumb {
    width: 22px;
    height: 22px;
  }

  .nav-list a {
    padding-block: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .masthead,
  .studio-controls,
  .stage,
  .colophon {
    display: none;
  }
}