/* ==========================================================================
   Documentation System — Swiss-Archival (International Typographic Style × Museum Archive)
   Adapted for portfolio
   ========================================================================== */

: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;
}

*,
*::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; }
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); }

/* ---------- Shell ---------- */
.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 ---------- */
.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); }

/* ---------- 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); }

/* ---------- Server 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; }

/* ---------- Lang 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); }

/* ---------- 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); max-width: 860px; margin-left: auto; margin-right: auto; }
.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; }

/* ---------- 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; }

/* ---------- Reference tables ---------- */
.doc-table-wrap { overflow-x: auto; margin: 0 0 24px; border: 1px solid var(--rule-strong); border-radius: var(--radius-md); background: var(--paper-raised); box-shadow: 0 2px 8px var(--shadow-soft); }
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: 12px 16px; border-bottom: 1px solid var(--rule-strong); background: var(--paper-sunken); font-weight: 700; }
.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: 12px 16px; border-bottom: 1px solid var(--rule-strong); background: var(--paper-sunken); white-space: nowrap; text-transform: uppercase; }
.doc-table td { padding: 12px 16px; border-bottom: 1px solid var(--rule); vertical-align: top; color: var(--ink-body); }
.doc-table tr:last-child td { border-bottom: none; }
.doc-table tr:hover td { background: var(--accent-wash); }
.doc-table td:first-child { font-weight: 700; color: var(--ink); white-space: nowrap; }
.doc-table tbody tr:nth-child(even) td { background: var(--paper); }
.doc-table tbody tr:nth-child(even):hover td { background: var(--accent-wash); }

/* ---------- 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; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .doc-main { grid-template-columns: minmax(0, 1fr); }
  .doc-toc { display: none; }
  .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; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- Lang visibility ---------- */
body.lang-id .en { display: none !important; }
body.lang-en .id { display: none !important; }

/* ---------- Mobile nav ---------- */
.menu-btn { display: none; }
@media (max-width: 900px) {
  .menu-btn { display: inline-flex !important; align-items: center; justify-content: center; width: 36px; height: 36px; border: 1px solid var(--rule-strong); background: transparent; color: var(--ink); cursor: pointer; font-family: var(--font-mono); font-size: 0.8rem; }
  .doc-nav { display: none; }
  .doc-nav.open { display: block; }
}