/* ─────────────────────────────────────────────────────────────────────────────
   ONA Visual Lab — Developer Documentation styles
   Self-contained: no dependency on the main lab's tokens.css.
   ───────────────────────────────────────────────────────────────────────────── */

/* ── Design tokens ─────────────────────────────────────────────────────────── */
:root {
  --doc-bg:          #0d1117;
  --doc-bg-surface:  #161b22;
  --doc-bg-hover:    #21262d;
  --doc-bg-active:   #1c2b3a;
  --doc-border:      #30363d;
  --doc-text:        #e6edf3;
  --doc-text-muted:  #8b949e;
  --doc-text-faint:  #484f58;
  --doc-accent:      #4f6ef7;
  --doc-accent-dim:  #1e2d66;
  --doc-green:       #34d399;
  --doc-amber:       #fbbf24;
  --doc-red:         #f87171;
  --doc-code-bg:     #161b22;
  --doc-code-border: #30363d;
  --doc-code-text:   #c9d1d9;
  --doc-tip-bg:      #0e2032;
  --doc-tip-border:  #4f6ef7;
  --doc-warn-bg:     #1f1700;
  --doc-warn-border: #b08500;
  --doc-topbar-h:    48px;
  --doc-sidebar-w:   270px;
  --doc-gutter:      2.5rem;
  --doc-font:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --doc-mono:        'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --doc-font-sm:     0.8125rem;
  --doc-font-base:   0.9rem;
  --doc-lh:          1.75;
  --doc-radius:      6px;
  --doc-radius-sm:   4px;
}

/* ── Reset ──────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--doc-font);
  font-size: var(--doc-font-base);
  line-height: var(--doc-lh);
  background: var(--doc-bg);
  color: var(--doc-text);
  min-height: 100vh;
}

/* ── Topbar ─────────────────────────────────────────────────────────────────── */
.ona-docs__topbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--doc-topbar-h);
  display: flex; align-items: center; gap: 1rem;
  padding: 0 1.25rem;
  background: var(--doc-bg-surface);
  border-bottom: 1px solid var(--doc-border);
  z-index: 100;
}
.ona-docs__topbar-logo { font-weight: 700; font-size: 0.9rem; color: var(--doc-text); letter-spacing: -0.01em; white-space: nowrap; }
.ona-docs__topbar-badge { font-size: 0.65rem; font-weight: 600; background: var(--doc-accent-dim); color: var(--doc-accent); border: 1px solid var(--doc-accent); border-radius: 999px; padding: 0.1rem 0.5rem; letter-spacing: 0.04em; text-transform: uppercase; }
.ona-docs__topbar-sep  { flex: 1; }
.ona-docs__topbar-link { font-size: var(--doc-font-sm); color: var(--doc-text-muted); text-decoration: none; padding: 0.25rem 0.6rem; border-radius: var(--doc-radius-sm); transition: background 0.12s, color 0.12s; }
.ona-docs__topbar-link:hover { background: var(--doc-bg-hover); color: var(--doc-text); }
.ona-docs__topbar-menu { display: none; background: none; border: none; color: var(--doc-text-muted); cursor: pointer; font-size: 1.25rem; padding: 0.25rem; }

/* ── Shell layout ───────────────────────────────────────────────────────────── */
.ona-docs__shell { display: flex; margin-top: var(--doc-topbar-h); min-height: calc(100vh - var(--doc-topbar-h)); }

/* ── Sidebar ────────────────────────────────────────────────────────────────── */
.ona-docs__sidebar {
  width: var(--doc-sidebar-w); flex-shrink: 0;
  position: sticky; top: var(--doc-topbar-h);
  height: calc(100vh - var(--doc-topbar-h));
  overflow-y: auto;
  border-right: 1px solid var(--doc-border);
  background: var(--doc-bg-surface);
  display: flex; flex-direction: column;
  scrollbar-width: thin; scrollbar-color: var(--doc-border) transparent;
}
.ona-docs__sidebar::-webkit-scrollbar { width: 4px; }
.ona-docs__sidebar::-webkit-scrollbar-thumb { background: var(--doc-border); border-radius: 2px; }

/* Search */
.ona-docs__search-wrap {
  position: relative;
  padding: 0.75rem 0.85rem 0.5rem;
  flex-shrink: 0;
  border-bottom: 1px solid var(--doc-border);
}
.ona-docs__search {
  width: 100%; appearance: none;
  background: var(--doc-bg-hover);
  border: 1px solid var(--doc-border);
  border-radius: var(--doc-radius-sm);
  color: var(--doc-text);
  font-family: var(--doc-font);
  font-size: var(--doc-font-sm);
  padding: 0.35rem 2rem 0.35rem 0.65rem;
  outline: none;
  transition: border-color 0.12s;
}
.ona-docs__search::placeholder { color: var(--doc-text-faint); }
.ona-docs__search:focus { border-color: var(--doc-accent); }
.ona-docs__search::-webkit-search-cancel-button { display: none; }
.ona-docs__search-clear {
  position: absolute; right: 1.1rem; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--doc-text-muted);
  cursor: pointer; font-size: 1rem; line-height: 1; padding: 0.15rem 0.25rem;
  border-radius: 2px; display: flex; align-items: center;
}
.ona-docs__search-clear:hover { color: var(--doc-text); }
.ona-docs__search-empty {
  padding: 0.6rem 1.25rem;
  font-size: var(--doc-font-sm);
  color: var(--doc-text-faint);
  font-style: italic;
}

/* Content search results */
#doc-search-results {
  padding: 0.4rem 0;
  overflow-y: auto;
  flex: 1;
}
.ona-docs__search-result {
  display: block;
  padding: 0.6rem 1.25rem;
  text-decoration: none;
  border-bottom: 1px solid var(--doc-border);
  transition: background 0.1s;
}
.ona-docs__search-result:hover,
.ona-docs__search-result:focus {
  background: var(--doc-hover);
  outline: none;
}
.ona-docs__search-result-title {
  display: block;
  font-size: var(--doc-font-sm);
  font-weight: 600;
  color: var(--doc-text);
  margin-bottom: 0.15rem;
}
.ona-docs__search-result-section {
  display: block;
  font-size: 0.7rem;
  color: var(--doc-accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.3rem;
}
.ona-docs__search-result-snippet {
  display: block;
  font-size: 0.72rem;
  color: var(--doc-text-muted);
  line-height: 1.4;
  white-space: normal;
}
.ona-docs__search-result-snippet mark {
  background: none;
  color: var(--doc-accent);
  font-weight: 600;
}

/* Nav sections */
#doc-nav { padding: 0.75rem 0; flex: 1; }

.ona-docs__nav-section { margin-bottom: 0.15rem; }
.ona-docs__nav-section-title {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.45rem 1rem 0.45rem 1.25rem;
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--doc-text-faint);
  cursor: pointer; user-select: none; transition: color 0.12s;
}
.ona-docs__nav-section-title:hover { color: var(--doc-text-muted); }
.ona-docs__nav-section-chevron { font-size: 0.65rem; transition: transform 0.18s; }
.ona-docs__nav-section--collapsed .ona-docs__nav-section-chevron { transform: rotate(-90deg); }
.ona-docs__nav-section--collapsed .ona-docs__nav-pages { display: none; }

.ona-docs__nav-item {
  display: block;
  padding: 0.35rem 1rem 0.35rem 1.5rem;
  font-size: var(--doc-font-sm); color: var(--doc-text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
  cursor: pointer;
}
.ona-docs__nav-item:hover { background: var(--doc-bg-hover); color: var(--doc-text); }
.ona-docs__nav-item--active { background: var(--doc-bg-active); color: var(--doc-accent); border-left-color: var(--doc-accent); font-weight: 500; }

/* ── Content area ───────────────────────────────────────────────────────────── */
.ona-docs__content {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column;
}

/* Page header — breadcrumb + copy btn */
.ona-docs__page-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.85rem var(--doc-gutter) 0;
  gap: 1rem;
  flex-shrink: 0;
}

.ona-docs__breadcrumb {
  font-size: var(--doc-font-sm); color: var(--doc-text-faint);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.ona-docs__breadcrumb-sep { margin: 0 0.35rem; }

/* Sticky copy button */
.ona-docs__copy-btn {
  flex-shrink: 0;
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  font-family: var(--doc-font); font-size: 0.75rem; font-weight: 500;
  color: var(--doc-text-muted);
  background: transparent;
  border: 1px solid var(--doc-border);
  border-radius: var(--doc-radius-sm);
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
  white-space: nowrap;
}
.ona-docs__copy-btn:hover { background: var(--doc-bg-hover); color: var(--doc-text); border-color: var(--doc-text-faint); }
.ona-docs__copy-btn--copied { color: var(--doc-green); border-color: var(--doc-green); }

/* Body */
.ona-docs__body {
  padding: 1.5rem var(--doc-gutter) 2rem;
  max-width: 820px;
  flex: 1;
}

/* Page footer */
.ona-docs__page-footer {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.25rem var(--doc-gutter);
  border-top: 1px solid var(--doc-border);
  margin: 0;
}
.ona-docs__footer-path {
  font-family: var(--doc-mono);
  font-size: 0.75rem;
  color: var(--doc-text-faint);
}
.ona-docs__footer-path::before { content: '✎ '; opacity: 0.6; }
.ona-docs__footer-mtime { font-size: 0.75rem; color: var(--doc-text-faint); }

/* Toast */
.ona-docs__toast {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  background: var(--doc-bg-surface); border: 1px solid var(--doc-green);
  color: var(--doc-green); font-size: 0.8rem; font-weight: 500;
  padding: 0.5rem 1rem; border-radius: var(--doc-radius);
  z-index: 200; opacity: 0; transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s; pointer-events: none;
}
.ona-docs__toast--visible { opacity: 1; transform: translateY(0); }

/* Loading / error */
.ona-docs__loading { color: var(--doc-text-muted); font-size: var(--doc-font-sm); padding: 2rem var(--doc-gutter); }
.ona-docs__loading--error { color: var(--doc-red); }

/* ── Markdown typography ─────────────────────────────────────────────────────── */
.ona-docs__body { color: var(--doc-text); }

/* Headings — h1 is the page title */
.ona-docs__body h1 { font-size: 1.7rem; font-weight: 700; letter-spacing: -0.02em; color: var(--doc-text); margin-bottom: 0.35rem; line-height: 1.25; padding-top: 2rem; }
.ona-docs__body h1:first-child { padding-top: 0; }
.ona-docs__body h2 { font-size: 1.1rem; font-weight: 600; color: var(--doc-text); margin-top: 2.25rem; margin-bottom: 0.75rem; padding-bottom: 0.4rem; border-bottom: 1px solid var(--doc-border); }
.ona-docs__body h3 { font-size: 0.95rem; font-weight: 600; color: var(--doc-text); margin-top: 1.75rem; margin-bottom: 0.5rem; }
.ona-docs__body h4 { font-size: var(--doc-font-base); font-weight: 600; color: var(--doc-text-muted); margin-top: 1.25rem; margin-bottom: 0.4rem; }

/* Heading anchor link */
.ona-docs__anchor {
  margin-left: 0.5rem;
  font-size: 0.75em;
  color: var(--doc-text-faint);
  text-decoration: none;
  opacity: 0;
  transition: opacity 0.12s;
  vertical-align: middle;
  cursor: pointer;
}
.ona-docs__body h1:hover .ona-docs__anchor,
.ona-docs__body h2:hover .ona-docs__anchor,
.ona-docs__body h3:hover .ona-docs__anchor,
.ona-docs__body h4:hover .ona-docs__anchor { opacity: 1; }
.ona-docs__anchor:hover { color: var(--doc-accent); }

/* Paragraphs */
.ona-docs__body p { margin-bottom: 1rem; color: var(--doc-text-muted); }
.ona-docs__body p strong, .ona-docs__body li strong { color: var(--doc-text); }

/* Lists */
.ona-docs__body ul, .ona-docs__body ol { margin-bottom: 1rem; padding-left: 1.5rem; color: var(--doc-text-muted); }
.ona-docs__body li { margin-bottom: 0.3rem; }
.ona-docs__body li > p { margin-bottom: 0.25rem; }
.ona-docs__body ul ul, .ona-docs__body ol ol,
.ona-docs__body ul ol, .ona-docs__body ol ul { margin-bottom: 0.25rem; margin-top: 0.25rem; }

/* Inline code */
.ona-docs__body code {
  font-family: var(--doc-mono); font-size: 0.82em;
  background: var(--doc-code-bg); border: 1px solid var(--doc-code-border);
  color: #c9d1d9; padding: 0.15em 0.4em; border-radius: var(--doc-radius-sm);
}

/* Code blocks */
.ona-docs__code-block {
  position: relative; margin-bottom: 1.25rem;
  border: 1px solid var(--doc-code-border); border-radius: var(--doc-radius);
  overflow: hidden;
}
.ona-docs__code-block pre { margin: 0; padding: 1rem 1.25rem; overflow-x: auto; background: var(--doc-code-bg); scrollbar-width: thin; scrollbar-color: var(--doc-border) transparent; }
.ona-docs__code-block pre code { background: none; border: none; padding: 0; font-size: 0.84rem; font-family: var(--doc-mono); color: var(--doc-code-text); }
.ona-docs__code-lang {
  display: block; padding: 0.3rem 0.9rem;
  font-family: var(--doc-mono); font-size: 0.7rem; font-weight: 500;
  color: var(--doc-text-faint); text-transform: uppercase; letter-spacing: 0.05em;
  background: color-mix(in srgb, var(--doc-bg-surface) 80%, var(--doc-code-bg));
  border-bottom: 1px solid var(--doc-code-border);
}

/* Legacy pre/code (from marked without our wrapper) */
.ona-docs__body > pre { border: 1px solid var(--doc-code-border); border-radius: var(--doc-radius); padding: 1rem 1.25rem; overflow-x: auto; background: var(--doc-code-bg); margin-bottom: 1.25rem; }

/* Tables */
.ona-docs__body table { width: 100%; border-collapse: collapse; margin-bottom: 1.25rem; font-size: var(--doc-font-sm); border: 1px solid var(--doc-border); border-radius: var(--doc-radius); overflow: hidden; }
.ona-docs__body th { text-align: left; padding: 0.5rem 0.85rem; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--doc-text-faint); background: var(--doc-bg-surface); border-bottom: 1px solid var(--doc-border); }
.ona-docs__body td { padding: 0.5rem 0.85rem; color: var(--doc-text-muted); border-bottom: 1px solid var(--doc-border); vertical-align: top; }
.ona-docs__body tr:last-child td { border-bottom: none; }
.ona-docs__body tr:hover td { background: var(--doc-bg-hover); }
.ona-docs__body td code { font-size: 0.8em; }

/* Blockquotes — standard */
.ona-docs__body blockquote,
.ona-docs__callout {
  border-left: 3px solid var(--doc-tip-border);
  background: var(--doc-tip-bg);
  margin: 0 0 1.25rem 0;
  padding: 0.75rem 1rem;
  border-radius: 0 var(--doc-radius) var(--doc-radius) 0;
}
.ona-docs__body blockquote p,
.ona-docs__callout p { margin-bottom: 0.25rem; color: var(--doc-text-muted); font-size: var(--doc-font-sm); }
.ona-docs__body blockquote p:last-child,
.ona-docs__callout p:last-child { margin-bottom: 0; }

/* Warning callout — ⚠️ TO COMPLETE */
.ona-docs__callout--warn {
  border-left-color: var(--doc-warn-border);
  background: var(--doc-warn-bg);
}
.ona-docs__callout--warn p { color: #c9a227; }
.ona-docs__callout--warn strong { color: #fbbf24; }

/* Horizontal rules */
.ona-docs__body hr { border: none; border-top: 1px solid var(--doc-border); margin: 2rem 0; }

/* Links */
.ona-docs__body a { color: var(--doc-accent); text-decoration: none; }
.ona-docs__body a:hover { text-decoration: underline; }
.ona-docs__body .ona-docs__link--internal::before { content: '→ '; font-size: 0.85em; opacity: 0.7; }

/* ── highlight.js theme — ONA Dark ─────────────────────────────────────────── */
.hljs                { background: transparent; color: var(--doc-code-text); }
.hljs-keyword,
.hljs-selector-tag,
.hljs-built_in       { color: #ff7b72; }
.hljs-string,
.hljs-attr           { color: #a5d6ff; }
.hljs-comment,
.hljs-quote          { color: #8b949e; font-style: italic; }
.hljs-number,
.hljs-literal        { color: #f2cc60; }
.hljs-function,
.hljs-title          { color: #d2a8ff; }
.hljs-variable,
.hljs-template-variable { color: #ffa657; }
.hljs-property,
.hljs-name           { color: #79c0ff; }
.hljs-tag            { color: #7ee787; }
.hljs-meta           { color: #8b949e; }
.hljs-symbol,
.hljs-bullet,
.hljs-link           { color: #34d399; }
.hljs-deletion       { color: var(--doc-red); background: rgba(248,113,113,0.1); }
.hljs-addition       { color: var(--doc-green); background: rgba(52,211,153,0.1); }
.hljs-emphasis       { font-style: italic; }
.hljs-strong         { font-weight: 700; }

/* JSON specific */
.hljs-punctuation    { color: var(--doc-text-muted); }

/* ── Responsive — sidebar drawer ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .ona-docs__topbar-menu { display: flex; align-items: center; }

  .ona-docs__sidebar {
    position: fixed; top: var(--doc-topbar-h); left: 0; bottom: 0;
    z-index: 90;
    transform: translateX(-100%); transition: transform 0.22s ease;
    box-shadow: 4px 0 20px rgba(0,0,0,0.5);
  }
  .ona-docs__sidebar--open { transform: translateX(0); }

  .ona-docs__body { padding: 1.25rem 1.25rem 2rem; }
  .ona-docs__page-header { padding: 0.75rem 1.25rem 0; }
  .ona-docs__page-footer { padding: 1rem 1.25rem; }
  .ona-docs__page-header { flex-wrap: wrap; }
}