:root {
  color-scheme: dark;
  --bg: #0e1011;
  --surface: #191c1f;
  --surface-2: #22272b;
  --surface-3: #111416;
  --line: #363d42;
  --text: #f3f5f7;
  --muted: #aeb6c2;
  --accent: #75b7ff;
  --accent-2: #65d6b1;
  --warn: #ffd166;
  --danger: #ff8f70;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

.topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  max-width: 1540px;
  margin: 0 auto;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: #111416;
}

.back-link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.back-link:hover {
  border-color: var(--accent);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 22px;
  font-weight: 650;
  line-height: 1.2;
}

h2 {
  font-size: 15px;
  font-weight: 650;
}

p,
span,
label {
  color: var(--muted);
}

.status {
  min-width: 210px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.status.ok {
  color: var(--accent);
}

.status.warn {
  color: var(--warn);
}

.statusBlock {
  display: grid;
  justify-items: end;
  gap: 5px;
}

.statusBlock p {
  max-width: 430px;
  font-size: 12px;
  line-height: 1.35;
  text-align: right;
}

main {
  max-width: 1540px;
  margin: 0 auto;
  padding: 0 24px 28px;
}

.workspaceBar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: grid;
  gap: 10px;
  padding: 12px 0;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(14, 16, 17, 0.96) 100%);
  border-bottom: 1px solid rgba(54, 61, 66, 0.65);
  backdrop-filter: blur(12px);
}

.modeTabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
  max-width: 720px;
  min-width: 0;
}

.modeTab {
  min-width: 0;
}

.modeTab.active {
  border-color: var(--accent);
  color: var(--accent);
  background: #182231;
}

.controls {
  display: grid;
  grid-template-columns: minmax(240px, 420px) minmax(190px, 300px) minmax(190px, 300px);
  gap: 10px;
  align-items: end;
  width: 100%;
  min-width: 0;
  min-height: 58px;
  padding-top: 2px;
}

body[data-mode="source"] .controls {
  grid-template-columns: minmax(240px, 420px) minmax(190px, 300px) minmax(190px, 300px);
}

body[data-mode="source"] #leftControl,
body[data-mode="source"] #rightControl {
  visibility: hidden;
}

body[data-mode="distortion"] #rightControl,
body[data-mode="rendering"] #rightControl {
  visibility: hidden;
}

label {
  display: grid;
  gap: 6px;
  font-size: 13px;
}

select,
button {
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}

select {
  padding: 0 10px;
}

button {
  padding: 0 12px;
  cursor: pointer;
}

button:hover,
select:hover {
  border-color: var(--accent);
}

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

select:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.emptyState {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--muted);
}

.emptyState[hidden],
.comparison[hidden] {
  display: none;
}

.comparison {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.sourceView {
  margin-top: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1.72fr) minmax(300px, 0.5fr);
  gap: 16px;
  align-items: start;
}

.sourceView[hidden] {
  display: none;
}

.analysisRail {
  display: grid;
  align-content: start;
  gap: 16px;
}

.distortionGrid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px;
}

body[data-mode="distortion"] .distortionGrid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

body[data-mode="rendering"] .distortionGrid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

body[data-mode="rendering"] .distortionGrid .distortionCard {
  grid-column: span 2;
}

body[data-mode="rendering"] .distortionGrid .distortionCard:nth-child(3) {
  grid-column: 2 / span 2;
}

.distortionGrid[hidden] {
  display: none;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: none;
}

.panelHeader {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}

.subHeader {
  border-top: 1px solid var(--line);
}

.panelHeader span {
  font-size: 12px;
  white-space: nowrap;
}

.sourceDetails dl {
  display: grid;
  grid-template-columns: minmax(86px, 0.72fr) minmax(0, 1.28fr);
  gap: 1px;
  margin: 0;
  background: var(--line);
}

.sourceDetails dt,
.sourceDetails dd {
  min-width: 0;
  margin: 0;
  padding: 10px 12px;
  background: var(--surface);
  font-size: 13px;
}

.sourceDetails dt {
  color: var(--muted);
}

.sourceDetails dd {
  color: var(--text);
  overflow-wrap: anywhere;
}

.groupSummary {
  margin-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-3);
}

.groupSummary[hidden] {
  display: none;
}

.groupSummary p {
  font-size: 13px;
  line-height: 1.45;
}

.groupSummary > p {
  max-width: 780px;
}

#groupEyebrow {
  margin-bottom: 3px;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
}

.distortionCard .panelHeader h2 {
  font-size: 14px;
}

.referenceCard {
  border-color: rgba(101, 214, 177, 0.72);
}

.referenceCard .panelHeader {
  background: rgba(101, 214, 177, 0.12);
}

img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #050607;
}

.histogram {
  display: flex;
  align-items: end;
  gap: 1px;
  height: 144px;
  padding: 12px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}

.histogram span {
  flex: 1;
  min-width: 2px;
  background: var(--accent);
}

.rangeLabels {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  padding: 8px 12px 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.rangeLabels span {
  text-align: center;
}

.rangeLabels .first {
  text-align: left;
}

.rangeLabels .last {
  text-align: right;
}

.axisCaption {
  padding: 4px 12px 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
}

.imageComparison {
  margin-top: 16px;
}

.missing {
  min-height: 0;
  padding: 0 12px;
  color: var(--warn);
  font-size: 13px;
}

.missing:not(:empty) {
  padding: 10px 12px;
  border-top: 1px solid var(--line);
}

@media (max-width: 860px) {
  .topbar,
  .modeTabs,
  .controls,
  .workspaceBar,
  .sourceView,
  .comparison {
    grid-template-columns: 1fr;
  }

  .modeTabs {
    display: grid;
    width: 100%;
    max-width: none;
  }

  body[data-mode="source"] .controls,
  body[data-mode="tmo"] .controls,
  body[data-mode="distortion"] .controls,
  body[data-mode="rendering"] .controls,
  .controls {
    grid-template-columns: 1fr;
  }

  main {
    padding: 0 14px 22px;
  }

  .topbar {
    padding: 14px;
  }

  .topbar {
    gap: 12px;
  }

  .statusBlock {
    justify-items: start;
  }

  .statusBlock p {
    text-align: left;
  }

  .groupSummary {
    display: grid;
  }

  body[data-mode="rendering"] .distortionGrid .distortionCard:nth-child(3) {
    grid-column: auto;
  }

  body[data-mode="rendering"] .distortionGrid,
  body[data-mode="rendering"] .distortionGrid .distortionCard {
    grid-template-columns: 1fr;
    grid-column: auto;
  }
}