/* ==========================================================================
   HeLa MCP Ecosystem — Documentation System
   Scheme: Swiss-Archival (International Typographic Style × Museum Archive)
   - Paper canvas, coffee ink, burgundy accent, archival indigo
   - Display: Plus Jakarta Sans · Body: Plus Jakarta Sans · Meta: JetBrains Mono
   - Motion is feedback only (<=250ms) · All color via tokens (OKLCH)
   ========================================================================== */

:root {
  --paper: oklch(0.9087 0.0231 84.59);
  --paper-raised: oklch(0.9535 0.0172 84.59);
  --paper-sunken: oklch(0.8899 0.0257 86.88);
  --ink: oklch(0.2682 0.0118 67.29);
  --ink-body: oklch(0.3407 0.0146 71.58);
  --ink-meta: oklch(0.5519 0.0175 61.13);
  --ink-faint: oklch(0.6525 0.0189 67.49);
  --rule: oklch(0.8751 0.0233 84.59);
  --rule-strong: oklch(0.8203 0.0188 78.22);
  --accent: oklch(0.4158 0.1484 26.59);
  --accent-deep: oklch(0.3450 0.1226 26.53);
  --accent-wash: oklch(0.4158 0.1484 26.59 / 0.08);
  --indigo: oklch(0.3919 0.0612 248.86);
  --indigo-wash: oklch(0.3919 0.0612 248.86 / 0.08);
  --forest: oklch(0.4798 0.0933 143.95);
  --forest-wash: oklch(0.4798 0.0933 143.95 / 0.10);
  --code-bg: oklch(0.2256 0.0085 59.21);
  --code-surface: oklch(0.1940 0.0063 55.99);
  --code-fg: oklch(0.9352 0.0185 86.15);
  --code-line: oklch(1.0000 0.0000 89.88 / 0.08);
  --shadow-card: oklch(0.2682 0.0118 67.29 / 0.12);
  --shadow-soft: oklch(0.2682 0.0118 67.29 / 0.04);
  --font-display: 'Plus Jakarta Sans', -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;
  --sidebar-w: 232px;
  --content-w: 76ch;
}

/* ---------- Base ---------- */

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

html {
  scroll-behavior: smooth;
  background-color: var(--paper);
  overflow-x: clip;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--paper);
  color: var(--ink-body);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.2;
  overflow-wrap: anywhere;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-style: normal;
}

a {
  color: var(--accent);
}

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

code,
pre,
kbd {
  font-family: var(--font-mono);
}

::selection {
  background: var(--accent);
  color: var(--paper-raised);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 100;
  transform: translateY(-64px);
  background: var(--ink);
  color: var(--paper-raised);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 8px 14px;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: transform 0.15s var(--ease-out);
}

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

/* ---------- Shell: sidebar + main ---------- */

.doc-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  min-height: 100vh;
}

.doc-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  border-right: 1px solid var(--rule-strong);
  background: var(--paper-raised);
  padding: 20px 0 32px;
  font-size: 0.9rem;
}

.doc-brand {
  padding: 0 20px 16px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 12px;
}

.doc-brand-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.doc-brand-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-meta);
  margin-top: 4px;
}

.doc-nav-section {
  padding: 10px 20px 4px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
}

.doc-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}

.doc-nav a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 5px 20px;
  color: var(--ink-body);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.15s var(--ease-out), border-color 0.15s var(--ease-out), background-color 0.15s var(--ease-out);
}

.doc-nav a:hover {
  color: var(--accent);
}

.doc-nav a[aria-current="page"] {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-wash);
  font-weight: 700;
}

.doc-nav-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
}

.doc-main {
  min-width: 0;
  padding: 0 0 96px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 200px;
  gap: 40px;
  align-items: start;
}

.doc-content {
  max-width: var(--content-w);
  width: 100%;
  margin: 0 auto;
  padding: 40px 40px 0;
}

.doc-toc {
  position: sticky;
  top: 76px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding: 40px 32px 0 0;
  font-size: 0.8rem;
}

.doc-toc-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin-bottom: 8px;
}

.doc-toc ol {
  list-style: none;
  margin: 0;
  padding: 0 0 0 12px;
  border-left: 1px solid var(--rule-strong);
}

.doc-toc li {
  margin-bottom: 6px;
}

.doc-toc a {
  color: var(--ink-meta);
  text-decoration: none;
  transition: color 0.15s var(--ease-out);
}

.doc-toc a:hover {
  color: var(--accent);
}

/* ---------- Specimen plate (page header) ---------- */

.specimen-plate {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.specimen-ref {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--ink-meta);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 10px;
  margin-bottom: 20px;
}

.doc-title {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

.doc-lead {
  font-size: 1.1rem;
  color: var(--ink-body);
  margin: 0;
  max-width: 62ch;
}

/* ---------- Prose ---------- */

.doc-content h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 48px 0 12px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
}

.doc-content h2:first-of-type {
  margin-top: 8px;
}

.doc-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 32px 0 8px;
}

.doc-content p {
  margin: 0 0 16px;
}

.doc-content ul,
.doc-content ol {
  margin: 0 0 16px;
  padding-left: 24px;
}

.doc-content li {
  margin-bottom: 6px;
}

.doc-content li::marker {
  color: var(--accent);
}

/* ---------- Admonitions ---------- */

.admonition {
  border: 1px solid var(--rule-strong);
  border-left: 3px solid var(--indigo);
  background: var(--indigo-wash);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin: 0 0 20px;
  font-size: 0.92rem;
}

.admonition-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--indigo);
  margin-bottom: 4px;
}

.admonition.warning {
  border-left-color: var(--accent);
  background: var(--accent-wash);
}

.admonition.warning .admonition-title {
  color: var(--accent);
}

.admonition.success {
  border-left-color: var(--forest);
  background: var(--forest-wash);
}

.admonition.success .admonition-title {
  color: var(--forest);
}

/* ---------- Reference tables ---------- */

.doc-table-wrap {
  overflow-x: auto;
  margin: 0 0 24px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
}

table.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  background: var(--paper-raised);
}

.doc-table caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--ink-meta);
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule-strong);
}

.doc-table th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: left;
  color: var(--ink-meta);
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule-strong);
  background: var(--paper-sunken);
  white-space: nowrap;
}

.doc-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

.doc-table tr:last-child td {
  border-bottom: none;
}

.doc-table td:first-child {
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

/* ---------- Code dossiers ---------- */

.code-dossier {
  background: var(--code-bg);
  border: 1px solid var(--code-line);
  border-radius: var(--radius-md);
  margin: 0 0 24px;
  overflow: hidden;
}

.code-dossier-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  border-bottom: 1px solid var(--code-line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--code-fg);
}

.code-dossier pre {
  margin: 0;
  padding: 14px;
  overflow-x: auto;
  color: var(--code-fg);
  font-size: 0.82rem;
  line-height: 1.6;
}

.copy-btn {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  background: transparent;
  color: var(--code-fg);
  border: 1px solid var(--code-line);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  cursor: pointer;
  transition: border-color 0.15s var(--ease-out), color 0.15s var(--ease-out);
}

.copy-btn:hover {
  border-color: var(--code-fg);
}

/* ---------- Server reference cards ---------- */

.server-card {
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-md);
  background: var(--paper-raised);
  margin: 0 0 20px;
  overflow: hidden;
}

.server-card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--rule);
}

.server-card-header h3 {
  margin: 0;
  font-size: 1.1rem;
}

.server-card-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-meta);
}

.server-card-body {
  padding: 14px 18px;
  font-size: 0.92rem;
}

.server-card-body p {
  margin: 0 0 10px;
}

.tool-list {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--ink-body);
  background: var(--paper-sunken);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin: 10px 0 0;
}

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--rule-strong);
  color: var(--ink-meta);
  white-space: nowrap;
}

.badge-core {
  color: var(--forest);
  border-color: var(--forest);
}

.badge-special {
  color: var(--indigo);
  border-color: var(--indigo);
}

/* ---------- Steps ---------- */

ol.steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0 0 24px;
}

ol.steps > li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
}

ol.steps > li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
}

ol.steps > li::marker {
  content: none;
}

.step-tool {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--paper-sunken);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 1px 7px;
}

/* ---------- Tabs + form controls ---------- */

.tab-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 16px;
}

.tab-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 6px 12px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink-body);
  cursor: pointer;
  transition: border-color 0.15s var(--ease-out), color 0.15s var(--ease-out), background-color 0.15s var(--ease-out);
}

.tab-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.tab-btn[aria-selected="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper-raised);
}

.field-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
  margin: 0 0 16px;
}

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--ink-meta);
  margin-bottom: 4px;
}

.field select,
.field input[type="text"] {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink);
  background: var(--paper-raised);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}

/* ---------- Command palette ---------- */

.cmd-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  background: oklch(0.2682 0.0118 67.29 / 0.45);
  justify-content: center;
  align-items: flex-start;
  padding-top: 12vh;
}

.cmd-modal {
  width: min(560px, 92vw);
  background: var(--paper-raised);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 48px var(--shadow-card);
  overflow: hidden;
}

.cmd-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--rule);
}

.cmd-input {
  flex: 1;
  border: none;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--ink);
}

.cmd-input:focus {
  outline: none;
}

.cmd-results {
  max-height: 320px;
  overflow-y: auto;
}

.cmd-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 14px;
  font-size: 0.86rem;
  cursor: pointer;
  border-bottom: 1px solid var(--rule);
}

.cmd-item:hover {
  background: var(--accent-wash);
}

.cmd-item-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-meta);
  white-space: nowrap;
}

/* ---------- Top bar ---------- */

.doc-topbar {
  grid-column: 1 / -1;
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 40px;
  background: var(--paper-raised);
  border-bottom: 1px solid var(--rule-strong);
}

.doc-topbar-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--ink-meta);
}

.topbar-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 6px 12px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.15s var(--ease-out), background-color 0.15s var(--ease-out);
}

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

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper-raised);
}

.btn-primary:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  color: var(--paper-raised);
}

/* ---------- Specimen figure plates ---------- */

.figure-plate {
  margin: 28px 0 28px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-md);
  background: var(--paper-raised);
  overflow: hidden;
  box-shadow: 0 2px 8px var(--shadow-soft);
}

.figure-mat {
  background: var(--ink);
  padding: 22px;
}

.figure-mat img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  outline: 1px solid var(--code-line);
  outline-offset: 6px;
}

.figure-caption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 16px;
  border-top: 1px solid var(--rule-strong);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-meta);
}

.figure-caption strong {
  color: var(--accent);
  letter-spacing: 0.08em;
}

.figure-plate {
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Responsive video frames ---------- */

.video-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  margin: 0 0 24px;
}

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--ink);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-caption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-meta);
  padding: 8px 2px 0;
}

/* ---------- Definition rows (diagnostics) ---------- */

.diag-card {
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-md);
  background: var(--paper-raised);
  margin: 0 0 16px;
}

.diag-card-header {
  padding: 12px 18px;
  border-bottom: 1px solid var(--rule);
  font-weight: 700;
  color: var(--ink);
}

.diag-card-body {
  padding: 12px 18px;
  font-size: 0.92rem;
}

.diag-card-body p:last-child {
  margin-bottom: 0;
}

/* ---------- Footer ---------- */

.doc-footer {
  border-top: 2px solid var(--ink);
  margin-top: 64px;
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-meta);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .doc-main {
    grid-template-columns: minmax(0, 1fr);
  }

  .doc-toc {
    display: none;
  }

  .video-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .doc-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .doc-sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--rule-strong);
    padding-bottom: 12px;
  }

  .doc-content {
    padding: 28px 20px 0;
  }

  .doc-topbar {
    padding: 12px 20px;
  }

  .doc-title {
    font-size: 1.8rem;
  }

  .field-row {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- Language Switcher ---------- */

.lang-switcher {
  display: inline-flex;
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  padding: 2px;
  gap: 2px;
}

.lang-btn {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 3px 7px;
  border: none;
  background: transparent;
  color: var(--ink-meta);
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.15s var(--ease-out);
  text-decoration: none;
  display: inline-block;
  line-height: 1.2;
}

.lang-btn:hover {
  color: var(--ink);
}

.lang-btn.active {
  background: var(--ink);
  color: var(--paper-raised);
}