:root {
  color-scheme: dark;
  --color-page: #0b0f14;
  --color-section: #101826;
  --color-surface: #141c27;
  --color-border: #263244;
  --color-heading: #f7faff;
  --color-text: #e8edf4;
  --color-muted: #a7b2c3;
  --color-accent: #d4af37;
  --color-accent-hover: #b68b1e;
  --color-accent-strong: #f0c84b;
  --color-focus: #f0c84b;
  --color-info: #4da3ff;
  --color-success: #35c979;
  --color-warning: #ffb24a;
  --color-error: #ef8f8f;
  --ink: var(--color-text);
  --muted: var(--color-muted);
  --line: var(--color-border);
  --panel: var(--color-surface);
  --panel-strong: var(--color-section);
  --acid: var(--color-accent);
  --acid-dark: rgb(212 175 55 / 0.12);
  --amber: var(--color-warning);
  --red: var(--color-error);
  --bg: var(--color-page);
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --focus-width: 3px;
  --transition-fast: 220ms;
}

* { box-sizing: border-box; }
html { min-width: 320px; overflow-x: hidden; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--ink);
  background: var(--color-page);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button, input, select { font: inherit; }
:where(a, button, input, [tabindex]):focus-visible {
  outline: var(--focus-width) solid var(--color-focus);
  outline-offset: 0.25rem;
}

.skip-link {
  position: fixed;
  z-index: 50;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.85rem;
  color: var(--color-page);
  background: var(--color-accent-strong);
  border-radius: var(--radius-sm);
  transform: translateY(-180%);
}
.skip-link:focus-visible { transform: translateY(0); }

.masthead {
  min-height: 116px;
  display: grid;
  grid-template-columns: minmax(84px, 1fr) minmax(0, auto) minmax(84px, 1fr);
  align-items: center;
  gap: 20px;
  padding: 24px clamp(20px, 4vw, 64px);
  border-bottom: 1px solid var(--line);
}
.brand-home-link { display: inline-flex; justify-self: start; border-radius: var(--radius-sm); }
.brand-home-logo { display: block; width: clamp(115px, 12vw, 180px); height: auto; }
.masthead-title { min-width: 0; text-align: center; }
.masthead-title h1 { overflow-wrap: anywhere; }

h1, h2, h3, p { margin: 0; }
h1 { color: var(--color-heading); font: 600 clamp(1.65rem, 3vw, 2.6rem)/1.15 "Space Grotesk", Inter, sans-serif; letter-spacing: -0.025em; }
h2 { font-size: 1.05rem; font-weight: 600; }
h3 { font-size: .96rem; font-weight: 650; }
.eyebrow, .section-heading p { color: var(--acid); font-size: .66rem; font-weight: 750; letter-spacing: .19em; text-transform: uppercase; }
.masthead .eyebrow { margin-bottom: 7px; }

.status-pill {
  display: flex;
  justify-self: end;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .78rem;
}
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: #6f7b8d; }
.status-pill[data-state="running"] .status-dot { background: var(--amber); box-shadow: 0 0 12px var(--amber); }
.status-pill[data-state="succeeded"] .status-dot { background: var(--color-success); box-shadow: 0 0 12px rgb(53 201 121 / .45); }
.status-pill[data-state="failed"] .status-dot { background: var(--red); box-shadow: 0 0 12px var(--red); }

main { padding: 0 clamp(20px, 4vw, 64px) 56px; }
.workspace { display: grid; grid-template-columns: minmax(290px, 390px) 1fr; border-left: 1px solid var(--line); border-right: 1px solid var(--line); }
.control-panel, .visual-panel, .log-panel, .metrics-panel { background: var(--panel); }
.control-panel { padding: 30px; border-right: 1px solid var(--line); }
.visual-panel { min-width: 0; padding: 30px; }

.section-heading { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 26px; }
.section-heading > span { color: var(--muted); font: 600 .68rem/1.5 ui-monospace, monospace; }
.section-heading p { margin-bottom: 5px; }
.section-heading.compact { margin-bottom: 18px; }

form { display: grid; gap: 18px; }
label { display: grid; gap: 7px; color: var(--color-text); font-size: .76rem; font-weight: 650; }
label small { color: var(--muted); font-weight: 450; }
input, select {
  width: 100%;
  color: var(--ink);
  background: var(--color-section);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 11px 12px;
  outline: none;
}
input:focus { border-color: var(--color-focus); box-shadow: 0 0 0 3px rgb(240 200 75 / .18); }
select:focus, select:focus-visible { border-color: var(--color-focus); box-shadow: none; outline: none; }
select:not(:disabled):hover { border-color: var(--color-accent); }
select:not(:disabled):invalid, select:not(:disabled):user-invalid,
select:not(:disabled):invalid:focus, select:not(:disabled):user-invalid:focus { border-color: var(--color-error); }
input:disabled, select:disabled { color: #778396; cursor: not-allowed; opacity: .72; }
.field-group { display: grid; gap: 9px; padding: 13px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--color-section); }
.field-group[hidden] { display: none; }
.optional-analysis-toggle { grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 12px; }
.optional-analysis-toggle input[type="checkbox"] { width: 18px; height: 18px; padding: 0; accent-color: var(--acid); cursor: pointer; }
.optional-analysis-toggle input[type="checkbox"]:disabled { cursor: not-allowed; }
.field-note { color: var(--muted); font-size: .68rem; line-height: 1.45; }
.precomputed-contract-note {
  border: 1px solid rgb(212 175 55 / .42);
  border-radius: var(--radius-md);
  background: rgb(212 175 55 / .08);
  padding: 12px;
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: .72rem;
  line-height: 1.45;
}
.precomputed-contract-note[hidden] { display: none; }
.precomputed-contract-note strong {
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .66rem;
}
#lighting-target-field[hidden], #lighting-target-mode-field[hidden] { display: none; }
.system-operation-note { margin-top: -10px; color: var(--muted); font-size: .68rem; line-height: 1.45; }
.system-operation-note[data-system="karma_hps"] { color: var(--amber); }
.two-column { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
fieldset { margin: 0; padding: 0; border: 0; }
legend { margin-bottom: 8px; color: var(--color-text); font-size: .76rem; font-weight: 650; }
.quality-grid { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 5px; overflow: hidden; }
.quality-grid label { display: block; position: relative; }
.quality-grid label:nth-child(odd) { border-right: 1px solid var(--line); }
.quality-grid label:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
.quality-grid input { position: absolute; opacity: 0; }
.quality-grid span { display: block; padding: 9px; text-align: center; color: var(--muted); cursor: pointer; }
.quality-grid input:checked + span { color: var(--color-accent-strong); background: var(--acid-dark); }
.run-button {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 4px; padding: 13px 15px; color: var(--color-page); background: var(--color-accent);
  border: 0; border-radius: var(--radius-sm); font-weight: 780; cursor: pointer;
  transition: background-color var(--transition-fast) ease, transform var(--transition-fast) ease;
}
.run-button:disabled { cursor: wait; filter: saturate(.4); opacity: .65; }
.run-button:not(:disabled):hover { background: var(--color-accent-hover); transform: translateY(-1px); }

.visual-stage {
  min-height: 410px; position: relative; display: grid; place-items: center; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--color-page);
}
.stage-grid { position: absolute; inset: 0; opacity: .28; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 28px 28px; mask-image: radial-gradient(circle, black, transparent 76%); }
.stage-copy { position: relative; max-width: 400px; padding: 30px; text-align: center; }
.stage-copy h3 { margin: 8px 0 10px; font: 600 1.6rem/1.15 "Space Grotesk", Inter, sans-serif; }
.stage-copy > p:last-child { color: var(--muted); font-size: .8rem; line-height: 1.6; }
.heatmap-grid { position: relative; width: 100%; padding: 16px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.heatmap-card { min-width: 0; margin: 0; border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; background: var(--color-page); }
.heatmap-open { display: block; width: 100%; padding: 0; border: 0; background: transparent; cursor: zoom-in; }
.heatmap-open:disabled { cursor: not-allowed; }
.heatmap-open img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: var(--color-page); }
.heatmap-card figcaption { display: grid; gap: 4px; padding: 11px 12px; border-top: 1px solid var(--line); font-size: .72rem; }
.heatmap-card figcaption span { color: var(--muted); font-size: .64rem; }
.visual-context { margin-top: 10px; color: var(--muted); font: .66rem/1.45 ui-monospace, monospace; }
.artifact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 13px; margin-top: 13px; }
.artifact-card { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 12px; align-items: center; min-width: 0; padding: 16px; color: var(--ink); border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--color-section); text-decoration: none; transition: background-color var(--transition-fast) ease, border-color var(--transition-fast) ease, transform var(--transition-fast) ease; }
.artifact-icon { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 5px; color: var(--muted); font: 700 .67rem ui-monospace, monospace; }
.artifact-card[aria-disabled="true"] { pointer-events: none; }
.artifact-card[data-available="true"] { border-color: rgb(212 175 55 / .45); cursor: pointer; }
.artifact-card[data-available="true"] .artifact-icon { color: var(--color-accent-strong); border-color: rgb(212 175 55 / .5); }
.artifact-card[data-available="true"]:hover { border-color: var(--color-accent); background: #182231; transform: translateY(-1px); }

dialog { width: min(96vw, 1320px); max-height: 94vh; padding: 0; color: var(--ink); background: var(--color-surface); border: 1px solid rgb(212 175 55 / .45); border-radius: var(--radius-md); }
dialog::backdrop { background: rgb(3 6 10 / .88); }
.dialog-header { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.dialog-header .eyebrow { margin-bottom: 4px; }
.dialog-header button { padding: 8px 11px; color: var(--ink); background: transparent; border: 1px solid var(--line); border-radius: 5px; cursor: pointer; }
#heatmap-dialog-image { display: block; max-width: 100%; max-height: calc(94vh - 130px); margin: 0 auto; object-fit: contain; }
#heatmap-dialog-context { padding: 10px 18px 14px; color: var(--muted); font: .66rem ui-monospace, monospace; border-top: 1px solid var(--line); }

.results-panel { display: grid; grid-template-columns: minmax(340px, .85fr) 1.15fr; border: 1px solid var(--line); border-top: 0; }
.log-panel, .metrics-panel { min-width: 0; padding: 28px 30px; }
.log-panel { border-right: 1px solid var(--line); }
.log-meta { display: flex; justify-content: space-between; margin-bottom: 9px; color: var(--muted); font: .65rem ui-monospace, monospace; }
pre { height: 260px; margin: 0; padding: 14px; overflow: auto; white-space: pre-wrap; color: #c7d0dd; background: var(--color-page); border: 1px solid var(--line); border-radius: var(--radius-sm); font: .7rem/1.55 "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace; }
.metrics-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.metrics-grid > div { min-width: 0; padding: 12px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metrics-grid .wide { grid-column: 1 / -1; }
.spectral-control-result[data-counterfactual="true"] { color: var(--amber); background: rgba(255, 183, 77, .08); }
.metric-help { display: grid; gap: 6px; margin-top: 12px; padding: 12px 14px; color: var(--muted); background: var(--color-section); border-left: 2px solid var(--color-accent); font-size: .68rem; line-height: 1.5; }
.metric-help strong { color: var(--color-text); font-weight: 650; }
.metrics-subsection-title { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin: 24px 0 10px; }
.metrics-subsection-title p { color: var(--acid); font-size: .72rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.metrics-subsection-title span { color: var(--muted); font-size: .65rem; text-align: right; }
.uniformity-grid { background: rgb(11 15 20 / .45); }
.fspm-surface-grid { background: rgb(212 175 55 / .035); }
#fspm-surface-section[hidden] { display: none; }
dt { color: var(--muted); font-size: .65rem; margin-bottom: 5px; }
dd { margin: 0; overflow-wrap: anywhere; color: var(--ink); font: 600 .77rem/1.35 ui-monospace, monospace; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (max-width: 980px) {
  .workspace, .results-panel { grid-template-columns: 1fr; }
  .control-panel, .log-panel { border-right: 0; border-bottom: 1px solid var(--line); }
  .visual-stage { min-height: 340px; }
  .heatmap-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .masthead {
    min-height: 136px;
    grid-template-areas: "brand status" "title title";
    grid-template-columns: auto minmax(0, 1fr);
    gap: 12px 16px;
    padding: 18px;
  }
  .brand-home-link { grid-area: brand; }
  .brand-home-logo { width: 120px; }
  .masthead-title { grid-area: title; width: 100%; }
  .status-pill { grid-area: status; }
  .control-panel, .visual-panel, .log-panel, .metrics-panel { padding: 22px 18px; }
  .artifact-grid, .metrics-grid { grid-template-columns: 1fr; }
  .metrics-grid .wide { grid-column: auto; }
  .metrics-subsection-title, .log-meta { align-items: flex-start; flex-direction: column; }
  main { padding-inline: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}

#far-red-analysis-field[hidden] { display: none; }
#spectral-basis-field[hidden] { display: none; }
#proposed-control-mode-field[hidden] { display: none; }
#proposed-ring-mode-field[hidden] { display: none; }
#proposed-source-mode-field[hidden] { display: none; }