/*
Purpose: professional governed workbench presentation for Surface Lab v3.
Governance scope: responsive controls, comparison previews, failure visibility, and export-readiness evidence.
Dependencies: playground/surface-lab/index.html and assets/styles.css.
Invariants: no publication authority, stable 44px controls, explicit state labels, and readable reversible artifacts.
*/

:root {
  color-scheme: dark;
  --panel: var(--bg-raise);
  --panel-soft: var(--bg-panel);
  --muted: var(--ink-soft);
  --warm: var(--accent-warm);
  --danger: #ff7f9f;
  --radius: 4px;
}

:root[data-theme="light"] {
  color-scheme: light;
  --panel: #ffffff;
  --panel-soft: #edf2f7;
  --muted: #526174;
  --warm: #864006;
  --danger: #aa2449;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
}

a { color: inherit; }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  min-height: 44px;
  background: var(--accent);
  color: #050609;
  padding: 11px 16px;
  text-decoration: none;
  transform: translateY(-180%);
}

.skip-link:focus { transform: translateY(0); }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.lab-header,
.lab-index,
.lab-shell {
  width: min(1400px, calc(100% - 64px));
  margin: 0 auto;
}

.lab-header {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(360px, 0.8fr);
  gap: 72px;
  align-items: start;
  padding: 42px 0 46px;
  border-bottom: 1px solid var(--line-bright);
}

.lab-intro,
.boundary,
.controls,
.workspace,
.preview-card,
.inspection-grid > *,
.proposal-grid > * {
  min-width: 0;
}

.lab-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
}

.lab-brand-row .brand {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.lab-brand-row .brand-logo {
  display: block;
  width: 152px;
  height: auto;
}

.lab-brand-row > span {
  color: var(--warm);
  font: 10px/1.2 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.logo-light { display: none !important; }
:root[data-theme="light"] .logo-dark { display: none !important; }
:root[data-theme="light"] .logo-light { display: block !important; }

.eyebrow,
.boundary span,
.lab-index,
.readouts span,
.state span,
.preview-label span,
.evidence-panel dt {
  font-family: var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
}

h1,
h2,
h3 {
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: 0;
}

h1 {
  max-width: 11ch;
  margin: 14px 0 18px;
  font-size: 64px;
  line-height: 0.99;
}

h2,
h3,
p { margin-top: 0; }

.lab-header p {
  max-width: 76ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.boundary {
  display: grid;
  grid-template-columns: minmax(80px, auto) minmax(0, 1fr);
  gap: 0;
  border-top: 3px solid var(--accent);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.boundary > span,
.boundary > strong {
  min-width: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 14px 16px;
}

.boundary > span {
  border-left: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 9px;
}

.boundary > strong {
  color: var(--ink);
  font-size: 12px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.theme-toggle {
  grid-column: 1 / -1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 44px;
  margin: 12px;
  width: calc(100% - 24px);
}

.theme-toggle[aria-pressed="true"] .theme-toggle-icon {
  background: linear-gradient(90deg, transparent 0 50%, currentColor 50% 100%);
}

.lab-index {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--line-bright);
  padding: 10px 0;
  font-size: 10px;
  overflow-x: auto;
}

.lab-index > span {
  flex: 0 0 auto;
  color: var(--warm);
  padding-right: 8px;
}

.lab-index a {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  min-height: 44px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  padding: 8px 13px;
  text-decoration: none;
}

.lab-index a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.lab-shell {
  display: grid;
  grid-template-columns: minmax(300px, 350px) minmax(0, 1fr);
  gap: 24px;
  padding: 30px 0 72px;
}

.controls,
.workspace,
.proposal,
.validation-panel,
.accessibility-panel,
.evidence-panel,
.failure-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.controls {
  position: sticky;
  top: 20px;
  align-self: start;
  max-height: calc(100vh - 40px);
  overflow: auto;
  border-top: 3px solid var(--warm);
  padding: 20px;
}

.workspace {
  padding: 22px;
}

.section-head h2 {
  margin: 8px 0 20px;
  font-size: 24px;
  line-height: 1.15;
}

.section-head.compact h2 { margin-bottom: 12px; }

label {
  display: grid;
  gap: 7px;
  margin: 0 0 13px;
  color: var(--muted);
  font-size: 12px;
}

select,
button {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line-bright);
  border-radius: 0;
  background: var(--panel-soft);
  color: var(--ink);
  font: 13px var(--sans);
  padding: 10px 12px;
}

select:disabled,
button:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

button { cursor: pointer; font-weight: 700; }
button:not(:disabled):hover,
select:not(:disabled):hover { border-color: var(--accent); }

.control-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 18px;
}

.control-actions button[data-action="copy"] {
  border-color: var(--accent);
  background: var(--accent);
  color: #03110d;
}

.status {
  min-height: 44px;
  margin: 14px 0;
  border-left: 3px solid var(--line-bright);
  background: var(--panel-soft);
  color: var(--muted);
  font: 11px/1.5 var(--mono);
  padding: 12px;
}

.status[data-state="valid"] { border-color: var(--accent); color: var(--accent); }
.status[data-state="draft"] { border-color: var(--warm); color: var(--warm); }
.status[data-state="blocked"] { border-color: var(--danger); color: var(--danger); }

.back-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--accent);
  font: 12px var(--mono);
}

.viewport {
  max-width: 100%;
  margin: 0 auto;
  transition: max-width 0.2s ease;
}

.viewport[data-viewport="tablet"] { max-width: 900px; }
.viewport[data-viewport="mobile"] { max-width: 430px; }

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  align-items: start;
}

.viewport[data-viewport="mobile"] .comparison-grid,
.viewport[data-viewport="tablet"] .comparison-grid { grid-template-columns: 1fr; }

.preview-card {
  --gap-size: 18px;
  display: grid;
  gap: var(--gap-size);
  min-width: 0;
  border: 1px solid var(--line-bright);
  border-radius: 4px;
  background: var(--panel-soft);
  padding: 20px;
  transition: transform 0.25s ease, background 0.25s ease, border-radius 0.25s ease, max-width 0.2s ease;
}

.preview-card[data-preview="proposed"] { border-top: 3px solid var(--accent); }
.preview-card[data-preview="current"] { border-top: 3px solid var(--line-bright); }
.preview-card[data-width="narrow"] { max-width: 680px; margin-inline: auto; }
.preview-card[data-width="content"] { max-width: 960px; margin-inline: auto; }
.preview-card[data-width="wide"] { max-width: 1180px; margin-inline: auto; }
.preview-card[data-width="full"],
.preview-card[data-width="native"] { max-width: none; }
.preview-card[data-gap="none"] { --gap-size: 0; }
.preview-card[data-gap="xs"] { --gap-size: 6px; }
.preview-card[data-gap="sm"] { --gap-size: 10px; }
.preview-card[data-gap="lg"] { --gap-size: 30px; }
.preview-card[data-gap="xl"] { --gap-size: 42px; }
.preview-card[data-alignment="center"] { text-align: center; }
.preview-card[data-alignment="end"] { text-align: right; }
.preview-card[data-surface="canvas"] { background: var(--bg); }
.preview-card[data-surface="elevated"] { box-shadow: var(--shadow); }
.preview-card[data-surface="brand"] { background: color-mix(in srgb, var(--accent) 10%, var(--panel-soft)); }
.preview-card[data-surface="inverse"] { background: var(--ink); color: var(--bg); }
.preview-card[data-shape="square"] { border-radius: 0; }
.preview-card[data-shape="soft"] { border-radius: 8px; }
.preview-card[data-shape="round"] { border-radius: 16px; }
.preview-card[data-shape="lattice"] { border-radius: 4px; box-shadow: inset 0 0 0 1px rgba(101,230,196,.08); }
.preview-card[data-density="compact"] { padding: 16px; }
.preview-card[data-density="spacious"] { padding: 36px; }
.preview-card[data-layout="split"] .preview-head { grid-template-columns: 1fr 150px; }
.preview-card[data-layout="cluster"] .readouts { display: flex; flex-wrap: wrap; }
.preview-card[data-layout="grid"] .readouts { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.preview-card[data-layout="sidebar"] { grid-template-columns: minmax(0, 1fr) minmax(180px, 0.35fr); }
.preview-card[data-layout="sidebar"] .preview-label,
.preview-card[data-layout="sidebar"] .preview-head { grid-column: 1 / -1; }
.preview-card[data-layout="cover"] { min-height: 520px; align-content: center; }
.preview-card[data-layout="bleed"] { width: calc(100% + 28px); margin-inline: -14px; }
.preview-card[data-layout="frame"] { border-width: 2px; }
.preview-card[data-motion="enter-subtle"] { animation: fade-in 0.35s ease both; }
.preview-card[data-motion="enter-rise"] { animation: rise-in 0.4s ease both; }

body[data-reduced-motion="true"] *,
body[data-reduced-motion="true"] *::before,
body[data-reduced-motion="true"] *::after { animation: none !important; transition: none !important; }

.preview-label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
}

.preview-label span,
.readouts span,
.state span {
  color: var(--ink-dim);
  font-size: 9px;
}

.preview-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
}

.kind {
  display: inline-flex;
  border: 1px solid var(--accent);
  color: var(--accent);
  font: 9px var(--mono);
  letter-spacing: 0.08em;
  padding: 5px 8px;
  text-transform: uppercase;
}

.preview-head h3 {
  margin: 14px 0 8px;
  font-size: 28px;
  line-height: 1.08;
  overflow-wrap: anywhere;
}

.preview-head p {
  max-width: 700px;
  color: var(--muted);
  line-height: 1.55;
}

.state {
  display: grid;
  gap: 5px;
  min-width: 110px;
  border: 1px solid var(--line);
  padding: 12px;
}

.state strong { color: var(--warm); }

.lattice {
  overflow: hidden;
  border: 1px solid var(--line);
  background: #070b11;
}

.lattice svg {
  display: block;
  width: 100%;
  height: auto;
  min-height: 220px;
}

.edges line { stroke: rgba(101,230,196,.42); stroke-width: 2.5; }
.nodes circle { fill: #101824; stroke: var(--accent); stroke-width: 2; }
.nodes text { fill: #f5f7fb; font-size: 11px; text-anchor: middle; font-weight: 700; }

.readouts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.readouts div {
  display: grid;
  gap: 6px;
  min-width: 0;
  border-top: 1px solid var(--line);
  padding: 12px 0;
}

.readouts strong { font-size: 12px; overflow-wrap: anywhere; }

.failure-panel {
  display: grid;
  grid-template-columns: minmax(180px, 0.4fr) minmax(0, 1fr);
  gap: 18px;
  margin-top: 22px;
  border-left: 3px solid var(--danger);
  padding: 18px;
}

.failure-panel[hidden] { display: none; }
.failure-panel p { align-self: center; margin: 0; color: var(--muted); }

.inspection-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  min-width: 0;
  margin-top: 22px;
  scroll-margin-top: 24px;
}

.inspection-grid > * { min-width: 0; }
.inspection-grid .section-head,
.inspection-grid h2,
.inspection-grid ul,
.inspection-grid li { min-width: 0; overflow-wrap: anywhere; }

.validation-panel,
.accessibility-panel,
.evidence-panel { padding: 18px; }

.validation-panel ul,
.accessibility-panel ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.validation-panel li,
.accessibility-panel li {
  display: grid;
  gap: 4px;
  border-left: 3px solid var(--line);
  background: var(--panel-soft);
  padding: 10px 12px;
}

.validation-panel li strong { font: 700 11px/1.2 var(--mono); letter-spacing: 0.08em; }
.validation-panel li[data-level="valid"],
.accessibility-panel li[data-state="pass"] { border-color: var(--accent); }
.validation-panel li[data-level="warning"],
.accessibility-panel li[data-state="warning"] { border-color: var(--warm); }
.validation-panel li[data-level="blocked"] { border-color: var(--danger); }

.evidence-panel { margin-top: 22px; scroll-margin-top: 24px; }
.evidence-panel dl { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin: 0; }
.evidence-panel dl div { min-width: 0; border-top: 1px solid var(--line); padding: 12px 0; }
.evidence-panel dt { color: var(--ink-dim); font-size: 9px; }
.evidence-panel dd { margin: 7px 0 0; overflow-wrap: anywhere; font: 11px/1.5 var(--mono); }

.proposal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
  scroll-margin-top: 24px;
}

.proposal { min-width: 0; padding: 18px; }

pre {
  max-height: 620px;
  margin: 0;
  overflow: auto;
  background: #030507;
  color: #c9f9eb;
  font: 11px/1.6 var(--mono);
  overflow-wrap: anywhere;
  padding: 16px;
  white-space: pre-wrap;
}

html[data-theme="light"] body,
body[data-theme="light"] {
  color-scheme: light;
  background: var(--bg);
  color: var(--ink);
}

html[data-theme="light"] body .boundary,
html[data-theme="light"] body .controls,
html[data-theme="light"] body .workspace,
html[data-theme="light"] body .proposal,
html[data-theme="light"] body .validation-panel,
html[data-theme="light"] body .accessibility-panel,
html[data-theme="light"] body .evidence-panel,
html[data-theme="light"] body .failure-panel { background: var(--panel); }

html[data-theme="light"] body .lattice,
html[data-theme="light"] body pre,
body[data-theme="light"] .lattice,
body[data-theme="light"] pre { background: #111827; }

@keyframes fade-in { from { opacity: 0.45; } to { opacity: 1; } }
@keyframes rise-in { from { opacity: 0.45; transform: translateY(12px); } to { opacity: 1; transform: none; } }

@media (max-width: 1120px) {
  .comparison-grid,
  .proposal-grid,
  .inspection-grid,
  .evidence-panel dl { grid-template-columns: 1fr; }
}

@media (max-width: 1000px) {
  .lab-header,
  .lab-shell { grid-template-columns: 1fr; }
  .controls { position: static; max-height: none; }
}

@media (max-width: 720px) {
  .lab-header,
  .lab-index,
  .lab-shell { width: min(100% - 32px, 1400px); }

  .lab-header { gap: 36px; padding: 28px 0 36px; }
  .lab-brand-row { margin-bottom: 30px; }
  .lab-brand-row .brand-logo { width: 126px; }
  h1 { font-size: 42px; line-height: 1.02; }
  .lab-index { margin-right: 0; margin-left: 0; }
  .lab-shell { padding-top: 20px; }
  .preview-head,
  .readouts,
  .failure-panel { grid-template-columns: 1fr; }
  .control-actions { grid-template-columns: 1fr; }
  .preview-card { padding: 16px; }
  .preview-head h3 { font-size: 24px; }
  .state { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}