/* Document pages (about, terms, privacy): sticky section nav on the left, reading column on the right.
   Layout follows roboworld.ai's about/legal pages; colors and fonts are High School Roadmap's tokens. */
:root {
  --bg: #eef1f3; --surface: #ffffff; --ink: #17232b; --ink-2: #4a5a65; --ink-3: #7a8a95;
  --line: #d5dde2; --accent: #1d5c86; --accent-soft: #dbe9f3; --focus: #2f7fd0;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #11181d; --surface: #182229; --ink: #e6edf1; --ink-2: #aab8c1; --ink-3: #7f909b;
    --line: #2b3a44; --accent: #7fb6dd; --accent-soft: #1f3341; --focus: #7fb6dd; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #11181d; --surface: #182229; --ink: #e6edf1; --ink-2: #aab8c1; --ink-3: #7f909b;
  --line: #2b3a44; --accent: #7fb6dd; --accent-soft: #1f3341; --focus: #7fb6dd; color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.65 "IBM Plex Sans", system-ui, sans-serif; }
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* Top bar */
.doc-top {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5;
  display: flex; gap: 22px; align-items: center; flex-wrap: wrap;
  padding: 12px max(16px, env(safe-area-inset-right, 0px)) 12px max(16px, env(safe-area-inset-left, 0px));
  background: var(--surface); border-bottom: 1px solid var(--line);
}
.doc-top a { color: var(--ink-2); text-decoration: none; font-size: 14px; }
.doc-top a:hover, .doc-top a[aria-current="page"] { color: var(--ink); }
.doc-top .brand { font: 800 17px "Archivo", system-ui, sans-serif; color: var(--ink); margin-right: auto; }

/* Layout: nav + content */
.doc-layout {
  display: flex; gap: 48px; max-width: 1080px; margin: 0 auto;
  padding: 0 max(16px, env(safe-area-inset-right, 0px)) 0 max(16px, env(safe-area-inset-left, 0px));
}
.doc-nav { position: sticky; top: 64px; align-self: flex-start; width: 188px; flex: none; padding: 32px 0; }
.doc-nav nav { display: flex; flex-direction: column; gap: 1px; border-left: 1px solid var(--line); }
.doc-nav .nav-group-label {
  display: block; padding: 14px 14px 4px; font-size: 10px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-3);
}
.doc-nav a {
  display: block; padding: 6px 14px; margin-left: -1px; font-size: 12.5px; line-height: 1.4;
  color: var(--ink-3); text-decoration: none; border-left: 2px solid transparent;
}
.doc-nav a:hover { color: var(--ink-2); }
.doc-nav a.active { color: var(--ink); font-weight: 600; border-left-color: var(--accent); }

.doc-content { flex: 1; min-width: 0; max-width: 720px; padding: 32px 0 96px; }
.doc-content section { scroll-margin-top: 72px; }
.doc-content h1 { font: 800 30px/1.2 "Archivo", system-ui, sans-serif; letter-spacing: -0.02em; margin: 0 0 6px; text-wrap: balance; }
.doc-content .updated { font-size: 13px; color: var(--ink-3); margin: 0 0 28px; }
.doc-content h2 { font: 700 19px/1.3 "Archivo", system-ui, sans-serif; letter-spacing: -0.01em; margin: 0 0 10px; text-wrap: balance; }
.doc-content h3 { font-size: 15px; font-weight: 600; margin: 22px 0 6px; }
.doc-content p { font-size: 14.5px; line-height: 1.7; color: var(--ink-2); margin: 0 0 12px; }
.doc-content strong { color: var(--ink); }
.doc-content ul { list-style: none; padding-left: 0; margin: 0 0 12px; }
.doc-content ul li { position: relative; padding-left: 16px; margin-bottom: 4px; font-size: 14.5px; line-height: 1.7; color: var(--ink-2); }
.doc-content ul li::before { content: "—"; position: absolute; left: 0; color: var(--ink-3); }
.doc-content .divider { height: 1px; background: var(--line); margin: 32px 0; }
.doc-content .summary { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 14px 18px; }
.doc-content .lede { font-size: 16.5px; line-height: 1.65; color: var(--ink); }
.doc-content blockquote {
  margin: 16px 0; padding: 12px 18px; border-left: 3px solid var(--accent);
  background: var(--accent-soft); color: var(--ink); font-size: 15px; border-radius: 0 6px 6px 0;
}
.doc-foot { text-align: center; color: var(--ink-3); font-size: 12px; padding: 0 16px 32px; }
.doc-foot a { color: var(--ink-3); }

@media (max-width: 820px) {
  .doc-layout { display: block; }
  .doc-nav { position: static; width: auto; padding: 16px 0 0; }
  .doc-nav nav { flex-direction: row; flex-wrap: wrap; border-left: 0; gap: 4px 10px; }
  .doc-nav .nav-group-label { display: none; }
  .doc-nav a { padding: 4px 0; border-left: 0; margin: 0; }
  .doc-nav a.active { border-left: 0; text-decoration: underline; }
  .doc-content { padding-top: 16px; }
  .doc-content h1 { font-size: 25px; }
}