*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --font-sans: "Geist", system-ui, sans-serif;
  --font-mono: "Geist Mono", "Fira Code", monospace;
  --bg: oklch(99% 0.003 264);
  --bg-subtle: oklch(97% 0.005 264);
  --border: oklch(90% 0.008 264);
  --border-soft: oklch(93% 0.006 264);
  --fg: oklch(14% 0.012 264);
  --fg-muted: oklch(48% 0.014 264);
  --fg-subtle: oklch(65% 0.01 264);
  --sidebar-bg: oklch(98.5% 0.004 264);
  --code-bg: oklch(96.5% 0.007 264);
  --code-border: oklch(88% 0.01 264);
  --accent: oklch(28% 0.02 264);
  --tag-bg: oklch(93% 0.01 264);
  --tag-fg: oklch(30% 0.018 264);
  --syn-keyword: oklch(50% 0.18 280);
  --syn-string: oklch(50% 0.16 150);
  --syn-type: oklch(50% 0.18 220);
  --syn-comment: oklch(62% 0.01 264);
  --syn-fn: oklch(50% 0.18 38);
  --syn-number: oklch(52% 0.18 38);
  --syn-punct: oklch(45% 0.014 264);
  --risk-low: oklch(55% 0.16 150);
  --risk-low-bg: oklch(95% 0.04 150);
  --risk-med: oklch(58% 0.18 75);
  --risk-med-bg: oklch(96% 0.04 75);
  --risk-high: oklch(55% 0.18 38);
  --risk-high-bg: oklch(96% 0.04 38);
  --risk-crit: oklch(50% 0.2 15);
  --risk-crit-bg: oklch(96% 0.04 15);
  --layer0-color: oklch(52% 0.18 280);
  --layer0-bg: oklch(95% 0.04 280);
  --layer1-color: oklch(50% 0.18 220);
  --layer1-bg: oklch(95% 0.04 220);
  --layer2-color: oklch(52% 0.18 180);
  --layer2-bg: oklch(95% 0.04 180);
  --velocity-color: oklch(52% 0.18 38);
  --velocity-bg: oklch(95% 0.04 38);
}
[data-theme="dark"] {
  --bg: oklch(12% 0.01 264);
  --bg-subtle: oklch(15% 0.012 264);
  --border: oklch(24% 0.012 264);
  --border-soft: oklch(20% 0.01 264);
  --fg: oklch(94% 0.008 264);
  --fg-muted: oklch(62% 0.012 264);
  --fg-subtle: oklch(44% 0.01 264);
  --sidebar-bg: oklch(13% 0.01 264);
  --code-bg: oklch(16% 0.012 264);
  --code-border: oklch(26% 0.014 264);
  --accent: oklch(92% 0.01 264);
  --tag-bg: oklch(22% 0.012 264);
  --tag-fg: oklch(78% 0.012 264);
  --syn-keyword: oklch(72% 0.18 280);
  --syn-string: oklch(68% 0.16 150);
  --syn-type: oklch(70% 0.18 220);
  --syn-comment: oklch(45% 0.01 264);
  --syn-fn: oklch(72% 0.18 60);
  --syn-number: oklch(72% 0.18 55);
  --syn-punct: oklch(60% 0.014 264);
  --risk-low: oklch(62% 0.16 150);
  --risk-low-bg: oklch(18% 0.06 150);
  --risk-med: oklch(68% 0.18 75);
  --risk-med-bg: oklch(18% 0.06 75);
  --risk-high: oklch(68% 0.18 38);
  --risk-high-bg: oklch(18% 0.06 38);
  --risk-crit: oklch(65% 0.2 15);
  --risk-crit-bg: oklch(18% 0.06 15);
  --layer0-color: oklch(72% 0.18 280);
  --layer0-bg: oklch(18% 0.06 280);
  --layer1-color: oklch(70% 0.18 220);
  --layer1-bg: oklch(18% 0.06 220);
  --layer2-color: oklch(70% 0.18 180);
  --layer2-bg: oklch(18% 0.06 180);
  --velocity-color: oklch(68% 0.18 38);
  --velocity-bg: oklch(18% 0.06 38);
}

html,
body {
  height: 100%;
}
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.layout {
  display: grid;
  grid-template-columns: 248px 1fr;
  grid-template-rows: 48px 1fr;
  min-height: 100vh;
}

/* Topbar */
.topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}
.topbar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-decoration: none;
}
.topbar-logo-mark {
  width: 22px;
  height: 22px;
  background: var(--fg);
  border-radius: 5px;
  display: grid;
  place-items: center;
}
.topbar-logo-mark svg {
  color: var(--bg);
}
.topbar-divider {
  width: 1px;
  height: 18px;
  background: var(--border);
}
.topbar-pkg {
  font-size: 12px;
  color: var(--fg-muted);
  font-family: var(--font-mono);
}
.topbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}
.badge-version {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--tag-bg);
  color: var(--tag-fg);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: 4px;
}
.btn-icon {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  display: grid;
  place-items: center;
  color: var(--fg-muted);
  transition:
    background 0.15s,
    color 0.15s;
  text-decoration: none;
}
.btn-icon:hover {
  background: var(--bg-subtle);
  color: var(--fg);
}

/* Sidebar */
.sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  position: sticky;
  top: 48px;
  height: calc(100vh - 48px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.sidebar-section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  padding: 14px 16px 6px;
}
.sidebar-section-label:first-child {
  padding-top: 0;
}
.sidebar-link {
  display: block;
  padding: 5px 16px;
  font-size: 13px;
  color: var(--fg-muted);
  text-decoration: none;
  cursor: pointer;
  transition:
    color 0.12s,
    background 0.12s;
}
.sidebar-link:hover {
  color: var(--fg);
  background: var(--bg-subtle);
}
.sidebar-link.active {
  color: var(--fg);
  font-weight: 500;
  background: var(--border-soft);
}
.sidebar-link.sub {
  padding-left: 28px;
  font-size: 12.5px;
}

/* Content */
.content {
  padding: 48px 64px 96px;
  max-width: 900px;
  overflow-y: auto;
  height: calc(100vh - 48px);
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.doc-section {
  margin-bottom: 56px;
  scroll-margin-top: 24px;
}

/* Typography */
h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--fg);
  margin-bottom: 10px;
}
h2 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 12px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
h2:first-child {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}
h3 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin-bottom: 8px;
  margin-top: 28px;
}
p {
  color: var(--fg-muted);
  margin-bottom: 14px;
  font-size: 14px;
  line-height: 1.7;
  text-wrap: pretty;
}
.lead {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}
a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
}
a:hover {
  color: var(--fg-muted);
}

code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  background: var(--tag-bg);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--fg);
}

.code-block {
  margin: 16px 0;
  border: 1px solid var(--code-border);
  border-radius: 8px;
  overflow: hidden;
}
.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--code-bg);
  border-bottom: 1px solid var(--code-border);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-subtle);
}
.copy-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--fg-subtle);
  cursor: pointer;
  transition:
    color 0.1s,
    background 0.1s;
}
.copy-btn:hover {
  color: var(--fg);
  background: var(--border-soft);
}
pre {
  background: var(--code-bg);
  padding: 16px 18px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--fg);
}
pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
  border-radius: 0;
}

.kw {
  color: var(--syn-keyword);
}
.str {
  color: var(--syn-string);
}
.ty {
  color: var(--syn-type);
}
.cm {
  color: var(--syn-comment);
  font-style: italic;
}
.fn {
  color: var(--syn-fn);
}
.num {
  color: var(--syn-number);
}
.pu {
  color: var(--syn-punct);
}

.callout {
  display: flex;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 7px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  margin: 16px 0;
  font-size: 13.5px;
  color: var(--fg-muted);
  line-height: 1.6;
}
.callout-icon {
  flex-shrink: 0;
  margin-top: 1px;
}
.callout.warn {
  background: oklch(97% 0.03 75);
  border-color: oklch(88% 0.08 75);
}
[data-theme="dark"] .callout.warn {
  background: oklch(16% 0.04 75);
  border-color: oklch(28% 0.08 75);
}
.callout.info {
  background: oklch(97% 0.03 220);
  border-color: oklch(88% 0.08 220);
}
[data-theme="dark"] .callout.info {
  background: oklch(16% 0.04 220);
  border-color: oklch(28% 0.08 220);
}

.table-wrap {
  overflow-x: auto;
  margin: 16px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th {
  text-align: left;
  padding: 8px 12px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  font-weight: 500;
  font-size: 12px;
  color: var(--fg-muted);
  letter-spacing: 0.01em;
}
td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--fg-muted);
  vertical-align: top;
}
tr:last-child td {
  border-bottom: none;
}
td code {
  font-size: 12px;
}
td.prop {
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 12.5px;
}
td.req {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--risk-crit);
}
td.opt {
  font-size: 11px;
  color: var(--fg-subtle);
}

.risk-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  white-space: nowrap;
}
.risk-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.risk-LOW {
  background: var(--risk-low-bg);
  color: var(--risk-low);
}
.risk-MEDIUM {
  background: var(--risk-med-bg);
  color: var(--risk-med);
}
.risk-HIGH {
  background: var(--risk-high-bg);
  color: var(--risk-high);
}
.risk-CRITICAL {
  background: var(--risk-crit-bg);
  color: var(--risk-crit);
}
.dot-LOW {
  background: var(--risk-low);
}
.dot-MEDIUM {
  background: var(--risk-med);
}
.dot-HIGH {
  background: var(--risk-high);
}
.dot-CRITICAL {
  background: var(--risk-crit);
}

.ux-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  background: var(--tag-bg);
  color: var(--tag-fg);
  border: 1px solid var(--border);
}
.stage-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 500;
  background: var(--tag-bg);
  color: var(--tag-fg);
  border: 1px solid var(--border);
  white-space: nowrap;
}
.err-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  background: var(--risk-crit-bg);
  color: var(--risk-crit);
  border: 1px solid color-mix(in oklch, var(--risk-crit) 30%, transparent);
}

/* Score cards */
.score-ranges {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 16px 0;
}
.score-card {
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.score-card .range {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}
.score-card .label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.score-card .desc {
  font-size: 12px;
  color: var(--fg-muted);
  line-height: 1.5;
}
.score-card.low {
  background: var(--risk-low-bg);
  border-color: color-mix(in oklch, var(--risk-low) 30%, transparent);
}
.score-card.medium {
  background: var(--risk-med-bg);
  border-color: color-mix(in oklch, var(--risk-med) 30%, transparent);
}
.score-card.high {
  background: var(--risk-high-bg);
  border-color: color-mix(in oklch, var(--risk-high) 30%, transparent);
}
.score-card.critical {
  background: var(--risk-crit-bg);
  border-color: color-mix(in oklch, var(--risk-crit) 30%, transparent);
}
.score-card.low .range,
.score-card.low .label {
  color: var(--risk-low);
}
.score-card.medium .range,
.score-card.medium .label {
  color: var(--risk-med);
}
.score-card.high .range,
.score-card.high .label {
  color: var(--risk-high);
}
.score-card.critical .range,
.score-card.critical .label {
  color: var(--risk-crit);
}

/* Flow steps */
.flow-steps {
  display: flex;
  flex-direction: column;
  margin: 16px 0;
}
.flow-step {
  display: flex;
  gap: 14px;
}
.flow-step-line {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}
.flow-step-dot {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--border);
  display: grid;
  place-items: center;
  font-size: 10px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--fg-muted);
  flex-shrink: 0;
}
.flow-step-connector {
  width: 2px;
  flex: 1;
  min-height: 18px;
  background: var(--border);
  margin: 3px 0;
}
.flow-step:last-child .flow-step-connector {
  display: none;
}
.flow-step-body {
  padding: 0 0 22px;
}
.flow-step-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--fg);
  margin-bottom: 3px;
  margin-top: 1px;
}
.flow-step-desc {
  font-size: 12.5px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* Pipeline diagram */
.pipeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 20px 0;
}
.pipeline-layer {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  background: var(--bg-subtle);
  position: relative;
}
.pipeline-layer + .pipeline-layer {
  margin-top: 0;
  border-top: none;
  border-radius: 0;
}
.pipeline-layer:first-child {
  border-radius: 8px 8px 0 0;
}
.pipeline-layer:last-child {
  border-radius: 0 0 8px 8px;
}
.pipeline-arrow {
  text-align: center;
  color: var(--fg-subtle);
  font-size: 12px;
  padding: 2px 0;
  background: var(--border-soft);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  line-height: 1;
}
.pipeline-layer-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 6px;
}
.layer-n0 {
  background: var(--layer0-bg);
  color: var(--layer0-color);
}
.layer-v3 {
  background: var(--layer1-bg);
  color: var(--layer1-color);
}
.layer-v4 {
  background: var(--layer2-bg);
  color: var(--layer2-color);
}
.layer-vel {
  background: var(--velocity-bg);
  color: var(--velocity-color);
}
.pipeline-layer-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 3px;
}
.pipeline-layer-desc {
  font-size: 12px;
  color: var(--fg-muted);
  line-height: 1.55;
}
.pipeline-layer-dataset {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-subtle);
  margin-top: 5px;
}

/* Page header */
.page-header {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  font-size: 12px;
  color: var(--fg-subtle);
  margin-bottom: 10px;
  display: block;
}
.breadcrumb span {
  color: var(--fg-muted);
}

/* Result pattern */
.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 16px 0;
}
.result-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  background: var(--bg-subtle);
}
.result-card-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.result-card.ok .result-card-title {
  color: var(--risk-low);
}
.result-card.err .result-card-title {
  color: var(--risk-crit);
}

::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

@media (max-width: 720px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    display: none;
  }
  .content {
    padding: 28px 20px 72px;
  }
  .score-ranges {
    grid-template-columns: repeat(2, 1fr);
  }
  .result-grid {
    grid-template-columns: 1fr;
  }
}