@font-face {
  font-family: "Archivo Black";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./fonts/archivo-black-latin.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./fonts/ibm-plex-mono-400-latin.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("./fonts/ibm-plex-mono-500-latin.woff2") format("woff2");
}

@font-face {
  font-family: "Newsreader";
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url("./fonts/newsreader-latin.woff2") format("woff2");
}

@font-face {
  font-family: "Syne";
  font-style: normal;
  font-weight: 600 800;
  font-display: swap;
  src: url("./fonts/syne-latin.woff2") format("woff2");
}

:root {
  --paper: #f1eee5;
  --paper-deep: #e4dfd3;
  --ink: #171714;
  --muted: #6c6a63;
  --rule: rgba(23, 23, 20, 0.22);
  --c1: #db2c2c;
  --c2: #dbdb2c;
  --c3: #2c2cdb;
  --c4: #db2c2c;
  --display: "Syne", "Arial Black", sans-serif;
  --serif: "Newsreader", Georgia, serif;
  --mono: "IBM Plex Mono", monospace;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--serif);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-width: 320px;
  min-height: 100%;
  margin: 0;
}

body {
  height: 100vh;
  overflow: hidden;
  background:
    linear-gradient(rgba(23, 23, 20, 0.024) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 7px;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--c2);
  outline-offset: 2px;
}

.app-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 48px;
  padding: 0 16px;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.app-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.wordmark,
.app-title span,
.app-header p {
  margin: 0;
}

.wordmark {
  background:
    radial-gradient(circle, rgba(241, 238, 229, 0.22) 0 0.35px, transparent 0.55px) 0 0 / 1.6px 1.6px,
    linear-gradient(100deg, var(--c1) 0%, var(--c2) 34%, var(--c3) 68%, var(--c4) 100%);
  background-clip: text;
  color: transparent;
  font-family: "Archivo Black", Arial, Helvetica, sans-serif;
  font-size: 29px;
  font-stretch: normal;
  font-weight: 400;
  letter-spacing: 0.075em;
  line-height: 1.18;
  text-transform: none;
  white-space: nowrap;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.app-header p {
  color: var(--muted);
}

.app-header > button {
  justify-self: end;
}

.app-header .mix-all-button {
  min-height: 28px;
  padding: 0 12px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(500px, 40%) minmax(0, 1fr);
  height: calc(100vh - 48px);
}

.studies-actions {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.studies-actions-label {
  color: var(--muted);
}

#mix-all-mobile {
  min-height: 26px;
  padding: 0 10px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.range-controls-group {
  display: contents;
}

.tool {
  display: grid;
  grid-template-columns: minmax(270px, 1.15fr) minmax(225px, 1fr);
  min-width: 0;
  border-right: 1px solid var(--ink);
}

.wheel-panel {
  display: flex;
  min-width: 0;
  padding: 0 12px;
  border-right: 1px solid var(--ink);
  flex-direction: column;
}

.panel-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 44px;
  border-bottom: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.wheel-status {
  display: grid;
  gap: 1px;
  justify-items: end;
}

.wheel-status strong {
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: -0.035em;
  text-transform: none;
}

.wheel-status span {
  color: var(--muted);
  font-size: 7px;
}

.wheel-wrap {
  position: relative;
  width: min(100%, 280px);
  aspect-ratio: 1;
  margin: 10px auto 8px;
}

.wheel {
  position: absolute;
  inset: 7%;
  border-radius: 50%;
  background:
    radial-gradient(circle, #dbdbdb 0%, rgba(219, 219, 219, 0) 100%),
    conic-gradient(from 0deg, #db0000, #db6e00 16.666%, #dbdb00 33.333%, #00db00 50%, #0000db 66.666%, #8000db 83.333%, #db0000);
  box-shadow: inset 0 0 0 1px rgba(23, 23, 20, 0.35);
}

.wheel-geometry {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  touch-action: none;
}

.wheel-rule,
.wheel-level-ring {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.wheel-level-ring {
  stroke-opacity: 0.24;
}

.wheel-level-label,
.wheel-label {
  fill: var(--ink);
  stroke: rgba(241, 238, 229, 0.9);
  stroke-width: 3px;
  paint-order: stroke fill;
  font-family: var(--mono);
  font-size: 7px;
  font-weight: 500;
  letter-spacing: 0.035em;
}

.wheel-tick {
  stroke: rgba(23, 23, 20, 0.36);
  stroke-width: 1;
}

.wheel-tick--major {
  stroke: var(--ink);
  stroke-width: 1.3;
}

.harmony-line-underlay {
  stroke: rgba(241, 238, 229, 0.82);
  stroke-width: 5;
  vector-effect: non-scaling-stroke;
}

.harmony-line {
  stroke: var(--ink);
  stroke-width: 2.3;
  vector-effect: non-scaling-stroke;
}

.harmony-guide {
  stroke: var(--ink);
  stroke-dasharray: 3 5;
  stroke-opacity: 0.45;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.harmony-marker {
  stroke: var(--ink);
  stroke-width: 3;
  cursor: grab;
  filter: drop-shadow(0 0 1px rgba(241, 238, 229, 0.9));
  pointer-events: all;
  vector-effect: non-scaling-stroke;
}

.harmony-marker.is-locked {
  stroke: var(--paper);
  stroke-width: 5;
  filter: drop-shadow(0 0 0.8px var(--ink)) drop-shadow(0 0 0.8px var(--ink));
}

.harmony-marker:focus-visible {
  outline: none;
  stroke: var(--paper);
  stroke-width: 7;
  filter: drop-shadow(0 0 1px var(--ink)) drop-shadow(0 0 1px var(--ink));
}

.cvd-conflict-line {
  stroke: var(--paper);
  stroke-dasharray: 6 5;
  stroke-width: 5;
  vector-effect: non-scaling-stroke;
}

.cvd-conflict-line-underlay {
  stroke: var(--ink);
  stroke-width: 8;
  vector-effect: non-scaling-stroke;
}

body.is-dragging,
body.is-dragging .harmony-marker {
  cursor: grabbing;
  user-select: none;
}

.wheel-hub {
  fill: var(--ink);
}

.wheel-key {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  min-height: 27px;
  padding: 7px 0;
  border-top: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 6px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.wheel-subcontrols {
  display: flex;
  flex: 1;
  min-height: 0;
  margin: 0 -12px;
  border-top: 1px solid var(--ink);
  background: rgba(228, 223, 211, 0.3);
  flex-direction: column;
}

.system-control,
.vision-control {
  margin: 0;
  padding: 8px 12px;
  border: 0;
  border-bottom: 1px solid var(--ink);
}

.system-control legend,
.vision-control legend {
  float: left;
  width: 100%;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.vision-control legend span {
  float: right;
  color: var(--muted);
  font-size: 6px;
}

#system-control,
#tone-control,
#vision-control {
  clear: both;
  display: grid;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}

#system-control {
  grid-template-columns: repeat(3, 1fr);
}

#tone-control,
#vision-control {
  grid-template-columns: repeat(2, 1fr);
}

#system-control button,
#tone-control button,
#vision-control button {
  min-height: 29px;
  padding: 0 7px;
  border: 0;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: transparent;
  cursor: pointer;
  font-family: var(--display);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-align: left;
}

#system-control button:hover,
#system-control button.is-active,
#tone-control button:hover,
#tone-control button.is-active,
#vision-control button:hover,
#vision-control button.is-active {
  background: var(--ink);
  color: var(--paper);
}

#vision-control button {
  min-height: 23px;
  font-size: 7px;
}

#tone-control button:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.wheel-key span:nth-child(2) {
  text-align: center;
}

.wheel-key span:last-child {
  text-align: right;
}

.control-panel {
  display: flex;
  min-width: 0;
  background: rgba(228, 223, 211, 0.46);
  flex-direction: column;
}

.control-group {
  min-width: 0;
  margin: 0;
  padding: 13px 12px 14px;
  border: 0;
  border-bottom: 1px solid var(--ink);
}

.control-group legend {
  float: left;
  width: 100%;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.relationship-list {
  clear: both;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}

.relationship-list button {
  min-height: 29px;
  padding: 0 7px;
  border: 0;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: transparent;
  cursor: pointer;
  font-family: var(--display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-align: left;
}

.relationship-list button:hover,
.relationship-list button.is-active {
  background: var(--ink);
  color: var(--paper);
}

.range-controls {
  position: relative;
  display: grid;
  gap: 11px;
  padding-top: 35px;
}

.range-controls > legend {
  position: absolute;
  top: 13px;
  left: 12px;
  float: none;
  width: calc(100% - 24px);
  margin: 0;
}

.range-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 8px;
  align-items: center;
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: opacity 150ms ease;
}

.range-row output {
  color: var(--muted);
}

.range-row input {
  grid-column: 1 / -1;
  width: 100%;
  height: 14px;
  margin: 0;
  appearance: none;
  background: transparent;
  cursor: ew-resize;
}

.range-row input::-webkit-slider-runnable-track {
  height: 1px;
  background: var(--ink);
}

.range-row input::-moz-range-track {
  height: 1px;
  background: var(--ink);
}

.range-row input::-webkit-slider-thumb {
  width: 11px;
  height: 11px;
  margin-top: -5px;
  appearance: none;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: var(--paper);
}

.range-row input::-moz-range-thumb {
  width: 11px;
  height: 11px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: var(--paper);
}

#saturation-control::-webkit-slider-runnable-track,
#saturation-control::-moz-range-track {
  height: 3px;
  background: linear-gradient(to right, #d8d8d3, var(--c1));
}

#value-control::-webkit-slider-runnable-track,
#value-control::-moz-range-track {
  height: 3px;
  border: 1px solid rgba(23, 23, 20, 0.4);
  background: linear-gradient(to right, #30302d, #fff);
}

.range-row.is-disabled {
  opacity: 0.28;
}

.palette {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 10px;
  padding: 7px 12px 12px;
}

.palette-item {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) auto;
  gap: 5px;
  align-items: center;
  min-height: 29px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 6px;
  text-transform: uppercase;
}

.palette-item.is-locked {
  box-shadow: inset 2px 0 0 var(--ink);
}

.palette-index {
  display: none;
}

.palette-swatch {
  width: 14px;
  height: 14px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: var(--swatch);
}

.palette-value {
  display: grid;
  gap: 1px;
  justify-items: end;
  color: var(--muted);
}

.palette-value small {
  font-size: 5px;
  white-space: nowrap;
}

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

.palette-lock {
  grid-column: 2 / -1;
  justify-self: end;
  margin-top: -7px;
  padding: 0;
  border: 0;
  border-bottom: 1px solid currentColor;
  background: transparent;
  cursor: pointer;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 5px;
  text-transform: uppercase;
}

.gamut-flag {
  color: #a01f18;
  font-style: normal;
}

.tone-map-block {
  display: grid;
  grid-template-rows: 26px minmax(120px, 1fr);
  flex: 1;
  min-height: 0;
  border-top: 1px solid var(--ink);
}

.tone-map-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  font-family: var(--mono);
  font-size: 6px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tone-map {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: repeat(5, 1fr);
  gap: 1px;
  min-height: 0;
  padding: 1px;
  background: var(--ink);
}

.tone-map button {
  position: relative;
  min-width: 0;
  min-height: 0;
  padding: 0;
  border: 0;
  cursor: pointer;
}

.tone-map button.is-active::after {
  content: "";
  position: absolute;
  inset: 22%;
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 1px var(--ink);
}

.utility-panel {
  display: grid;
  gap: 6px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--ink);
}

.utility-row {
  display: grid;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}

.utility-row--history {
  grid-template-columns: repeat(3, 1fr);
}

.utility-row--state {
  grid-template-columns: repeat(6, 1fr);
}

.utility-row button {
  min-height: 23px;
  padding: 0 4px;
  border: 0;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: transparent;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 6px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.utility-row button:hover:not(:disabled),
.utility-row button:focus-visible {
  background: var(--ink);
  color: var(--paper);
}

.utility-row button:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.saved-palettes {
  display: flex;
  gap: 4px;
  min-width: 0;
  padding-bottom: 3px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-color: var(--muted) transparent;
  scrollbar-width: thin;
  scroll-snap-type: x proximity;
}

.saved-palette-item {
  display: grid;
  grid-template-columns: 72px 24px;
  flex: 0 0 auto;
  border: 1px solid var(--ink);
  scroll-snap-align: start;
}

.saved-palette {
  display: grid;
  grid-template-columns: repeat(var(--saved-count), 1fr);
  height: 24px;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-right: 1px solid var(--ink);
  background: transparent;
  cursor: pointer;
}

.saved-palette span {
  min-width: 0;
}

.saved-palette-remove {
  display: grid;
  height: 24px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 8px;
  line-height: 1;
  place-items: center;
}

.saved-palette:hover,
.saved-palette:focus-visible,
.saved-palette-remove:hover,
.saved-palette-remove:focus-visible {
  box-shadow: inset 0 0 0 1px var(--ink);
}

.saved-palettes:empty {
  display: none;
}

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

.action-status {
  min-height: 8px;
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.credit {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 5px;
  letter-spacing: 0.05em;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
}

.credit:hover,
.credit:focus-visible {
  color: var(--ink);
  text-decoration: underline;
}

.contrast-analysis {
  display: grid;
  grid-template-rows: 27px minmax(120px, 1fr);
  flex: 1;
  min-height: 0;
  border-top: 1px solid var(--ink);
}

.contrast-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  font-family: var(--mono);
  font-size: 6px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.contrast-bar > span:last-child {
  display: flex;
  gap: 7px;
  align-items: center;
}

.contrast-bar i {
  color: var(--muted);
  font-style: normal;
}

.contrast-bar b {
  font-weight: 500;
}

.contrast-matrix {
  display: grid;
  grid-template-columns: repeat(var(--matrix-size), minmax(0, 1fr));
  grid-template-rows: repeat(var(--matrix-size), minmax(0, 1fr));
  gap: 1px;
  min-height: 0;
  padding: 1px;
  background: var(--ink);
}

.contrast-cell {
  display: grid;
  min-width: 0;
  min-height: 0;
  padding: 4px;
  border: 0;
  cursor: pointer;
  place-content: center;
  text-align: center;
}

.contrast-cell strong {
  font-family: var(--display);
  font-size: clamp(10px, 1vw, 18px);
  line-height: 1;
}

.contrast-cell small {
  margin-top: 3px;
  font-family: var(--mono);
  font-size: 5px;
}

.contrast-cell em {
  margin-top: 2px;
  font-family: var(--mono);
  font-size: 4px;
  font-style: normal;
  font-weight: 700;
  text-transform: uppercase;
}

.contrast-cell:hover,
.contrast-cell:focus-visible,
.contrast-cell.is-selected {
  box-shadow: inset 0 0 0 2px var(--paper);
}

.contrast-cell.is-selected {
  outline: 1px solid var(--ink);
  outline-offset: -4px;
}

.studies {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: repeat(3, minmax(0, 1fr));
  min-width: 0;
  min-height: 0;
}

.specimen {
  --s1: var(--c1);
  --s2: var(--c2);
  --s3: var(--c3);
  --s4: var(--c4);
  display: grid;
  grid-template-rows: 27px minmax(0, 1fr);
  min-width: 0;
  min-height: 0;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  overflow: hidden;
}

.specimen:nth-child(3n) {
  border-right: 0;
}

.specimen:nth-last-child(-n + 3) {
  border-bottom: 0;
}

.specimen-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 8px;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
  font-family: var(--mono);
  font-size: 6px;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.specimen-bar button {
  padding: 2px 0;
  border: 0;
  border-bottom: 1px solid currentColor;
  background: transparent;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 6px;
  text-transform: uppercase;
}

.type-field {
  position: relative;
  overflow: hidden;
  padding: 12px;
  background: var(--s1);
  color: var(--s2);
}

.type-field strong {
  position: absolute;
  right: 8px;
  bottom: -17px;
  font-family: var(--display);
  font-size: clamp(72px, 8vw, 130px);
  line-height: 0.8;
  letter-spacing: -0.1em;
}

.type-field span {
  position: relative;
  z-index: 1;
  font-family: var(--mono);
  font-size: 7px;
}

.type-field i {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 17px;
  height: 17px;
  background: var(--s3);
}

.nested-field,
.gradient-field,
.target-field,
.checker-field,
.geometry-field {
  display: grid;
  place-items: center;
  min-height: 0;
  background: var(--paper-deep);
}

.nested-square {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
}

.nested-square--outer {
  width: min(82%, 180px);
  background: var(--s1);
}

.nested-square--middle {
  width: 58%;
  background: var(--s2);
}

.nested-square--inner {
  width: 43%;
  background: var(--s3);
}

.gradient-square {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 1px;
  width: 100%;
  height: 100%;
  padding: 1px;
  border: 0;
  background: var(--ink);
}

.gradient-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 1px;
  min-width: 0;
  min-height: 0;
}

.gradient-grid span,
.gradient-strip {
  min-width: 0;
  min-height: 0;
}

.gradient-grid span:nth-child(1) {
  background: linear-gradient(135deg, var(--s1), var(--s2));
}

.gradient-grid span:nth-child(2) {
  background: radial-gradient(circle at 32% 28%, var(--s2), var(--s3) 72%, var(--s1));
}

.gradient-grid span:nth-child(3) {
  background: conic-gradient(from 45deg, var(--s1), var(--s2), var(--s3), var(--s1));
}

.gradient-grid span:nth-child(4) {
  background:
    linear-gradient(145deg, transparent 15%, var(--s4) 85%),
    linear-gradient(45deg, var(--s3), var(--s1));
}

.gradient-strip {
  background:
    repeating-linear-gradient(180deg, transparent 0 13%, rgba(241, 238, 229, 0.2) 13% 14%),
    linear-gradient(180deg, var(--s4), var(--s2) 45%, var(--s1));
}

.proportion-field,
.band-field {
  display: flex;
  min-height: 0;
}

.proportion-field > div {
  position: relative;
}

.proportion-field span {
  position: absolute;
  bottom: 7px;
  left: 50%;
  color: rgba(23, 23, 20, 0.62);
  font-family: var(--mono);
  font-size: 5px;
  transform: translateX(-50%) rotate(-90deg);
}

.reading-field {
  position: relative;
  padding: 12px;
  overflow: hidden;
  background: var(--s2);
  color: var(--s1);
}

.reading-field > span {
  font-family: var(--mono);
  font-size: 6px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.reading-field strong {
  position: absolute;
  right: 12px;
  bottom: 10px;
  font-family: var(--serif);
  font-size: clamp(25px, 2.7vw, 44px);
  font-weight: 500;
  line-height: 0.84;
  letter-spacing: -0.05em;
  text-align: right;
}

.reading-field i {
  position: absolute;
  right: 12px;
  left: 12px;
  top: 31px;
  height: 4px;
  background: var(--s3);
}

.band-field {
  flex-direction: column;
}

.target-field {
  background: var(--s1);
}

.target-field > div,
.target-field > div > div,
.target-field > div > div > div {
  display: grid;
  place-items: center;
  width: min(84%, 180px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--s2);
}

.target-field > div > div {
  width: 62%;
  background: var(--s3);
}

.target-field > div > div > div {
  width: 42%;
  background: var(--s4);
}

.checker-field {
  background:
    conic-gradient(var(--s1) 25%, var(--s2) 0 50%, var(--s1) 0 75%, var(--s2) 0) 0 0 / 32px 32px;
}

.checker-field > div {
  width: min(42%, 76px);
  aspect-ratio: 1;
  border: 1px solid var(--ink);
  background: var(--s3);
}

.geometry-field {
  position: relative;
  background: var(--s4);
}

.geometry-field span {
  position: absolute;
  display: block;
}

.geo-circle {
  left: 18%;
  width: min(34%, 70px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--s1);
}

.geo-square {
  right: 17%;
  width: min(31%, 64px);
  aspect-ratio: 1;
  background: var(--s2);
  transform: rotate(14deg);
}

.geo-bar {
  bottom: 18%;
  width: 63%;
  height: 8px;
  background: var(--s3);
}

@media (max-width: 1050px), (max-height: 650px) {
  body {
    height: auto;
    overflow: auto;
  }

  .workspace {
    grid-template-columns: 1fr;
    height: auto;
  }

  .tool {
    min-height: 560px;
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .studies {
    grid-auto-rows: 210px;
    grid-template-rows: repeat(3, 210px);
  }
}

@media (max-width: 680px) {
  .app-header {
    grid-template-columns: 1fr auto 1fr;
    padding: 0 12px;
  }

  .app-header p,
  .app-title span {
    display: none;
  }

  #mix-all {
    display: none;
  }

  .wordmark {
    font-size: 22px;
    letter-spacing: 0.03em;
  }

  .studies-actions {
    display: flex;
  }

  .workspace {
    display: block;
  }

  .tool {
    display: grid;
    grid-template-columns: minmax(0, 44fr) minmax(0, 56fr);
    min-height: unset;
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .wheel-panel {
    min-height: unset;
    padding: 0 8px;
    border-right: 1px solid var(--ink);
    border-bottom: 0;
  }

  .panel-bar {
    height: 34px;
    font-size: 7px;
  }

  .wheel-status strong {
    font-size: 10px;
  }

  .wheel-status span {
    font-size: 6px;
  }

  .wheel-wrap {
    width: 100%;
    max-width: 100%;
    margin: 8px auto 6px;
  }

  .wheel-key {
    display: none;
  }

  .wheel-subcontrols {
    margin: 0 -8px;
  }

  .system-control,
  .vision-control {
    padding: 6px 8px;
  }

  #system-control button {
    min-height: 26px;
    font-size: 8px;
    padding: 0 5px;
  }

  #vision-control button {
    min-height: 22px;
    font-size: 7px;
    padding: 0 5px;
  }

  .palette {
    grid-template-columns: 1fr;
    padding: 6px 8px 8px;
  }

  .tone-map-block {
    grid-template-rows: 22px minmax(90px, 1fr);
  }

  .tone-map-bar {
    padding: 0 8px;
  }

  .control-panel {
    min-height: unset;
  }

  .control-group {
    padding: 10px 10px 12px;
  }

  .relationship-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .relationship-list button {
    min-width: 0;
    min-height: 32px;
    font-size: 9px;
    padding: 0 5px;
  }

  .range-controls-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-bottom: 1px solid var(--ink);
  }

  .range-controls-group .range-controls {
    padding: 30px 10px 12px;
    border-bottom: 0;
    border-right: 1px solid var(--ink);
    gap: 10px;
  }

  .range-controls-group .range-controls:last-child {
    border-right: 0;
  }

  .range-controls-group .range-controls > legend {
    top: 10px;
    left: 10px;
    width: calc(100% - 20px);
  }

  .range-row {
    font-size: 7px;
  }

  #tone-control {
    grid-template-columns: repeat(4, 1fr);
  }

  #tone-control button {
    min-height: 28px;
    font-size: 8px;
    padding: 0 4px;
  }

  .utility-row--state {
    grid-template-columns: repeat(3, 1fr);
  }

  .utility-row button {
    min-height: 28px;
    font-size: 7px;
  }

  .contrast-analysis {
    grid-template-rows: 24px minmax(160px, 1fr);
  }

  .contrast-bar {
    padding: 0 10px;
  }

  .studies {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: auto;
    grid-template-rows: none;
  }

  .specimen {
    aspect-ratio: 1;
    min-height: 0;
    border-right: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
  }

  .specimen:nth-child(3n) {
    border-right: 1px solid var(--ink);
  }

  .specimen:nth-child(2n) {
    border-right: 0;
  }

  .specimen:nth-last-child(-n + 3) {
    border-bottom: 1px solid var(--ink);
  }

  .specimen:last-child {
    border-bottom: 0;
    border-right: 0;
  }

  .specimen:nth-last-child(2):nth-child(odd) {
    border-bottom: 0;
  }

  .type-field strong {
    font-size: clamp(56px, 22vw, 96px);
  }

  .reading-field strong {
    font-size: clamp(22px, 7vw, 40px);
  }
}

@media (max-width: 380px) {
  .wordmark {
    font-size: 18px;
    letter-spacing: 0.02em;
  }

  .app-header {
    padding: 0 10px;
  }

  .relationship-list button {
    font-size: 8px;
  }

  #tone-control {
    grid-template-columns: repeat(2, 1fr);
  }

  .utility-row--state {
    grid-template-columns: repeat(3, 1fr);
  }
}