/* Curriculum viewer styles — first-party. Reuses the site's palette + fonts from /styles.css
   (--paper, --ink, --accent, --font-serif/display/label/mono). Scoped under .sp-*. */

.sp-header { }
.sp-header-wrap { max-width: 78rem; margin-inline: auto; padding: 1.1rem 1.5rem 0; }
.sp-header-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: .7rem; }
.sp-header-row a:hover { color: var(--accent); }

/* ---- shell layout ---- */
.sp-shell {
  display: grid;
  grid-template-columns: 17rem minmax(0, 1fr);
  gap: 2.2rem;
  max-width: 78rem;
  margin-inline: auto;
  padding: 1.4rem 1.5rem 3rem;
  align-items: start;
}

/* ---- sidebar ---- */
.sp-sidebar {
  position: sticky;
  top: 1.25rem;
  align-self: start;
  max-height: calc(100vh - 2.5rem);
  overflow: auto;
  padding-right: .4rem;
  border-right: 1px solid var(--rule-soft);
}
.sp-nav-group { margin-bottom: 1.15rem; }
.sp-nav-head {
  font-family: var(--font-label); letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-faint); font-size: .64rem; font-weight: 700;
  padding-bottom: .35rem; margin-bottom: .35rem; border-bottom: 1px solid var(--rule-soft);
}
.sp-nav-list { list-style: none; margin: 0; padding: 0; }
.sp-nav-link {
  display: block; font-family: var(--font-label); font-size: .82rem; font-weight: 600;
  letter-spacing: .01em; color: var(--ink-soft); text-decoration: none;
  padding: .3rem .5rem; border-left: 2px solid transparent; border-radius: 0;
  transition: color .12s, border-color .12s, background-color .12s;
}
.sp-nav-link:hover { color: var(--accent); background: var(--paper-2); }
.sp-nav-link.is-active { color: var(--accent); border-left-color: var(--accent); background: var(--paper-2); font-weight: 700; }
.sp-loading { font-family: var(--font-label); color: var(--ink-faint); font-size: .8rem; padding: .5rem; }

/* ---- main column ---- */
.sp-main { min-width: 0; }
.sp-topbar {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem;
  padding-bottom: .7rem; margin-bottom: 1.2rem; border-bottom: 1px solid var(--rule-soft);
}
.sp-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: .1rem; }
.sp-crumbs a { text-decoration: none; }
.sp-crumbs a:hover { color: var(--accent); }
.sp-raw { white-space: nowrap; text-decoration: none; color: var(--ink-soft); }
.sp-raw:hover { color: var(--accent); }

/* ---- on-this-page TOC ---- */
.sp-toc {
  border: 1px solid var(--rule-soft); background: var(--paper-2);
  padding: .5rem .85rem .3rem; margin: 0 0 1.6rem; font-family: var(--font-label);
}
.sp-toc > summary {
  cursor: pointer; font-size: .68rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-faint); list-style: none;
}
.sp-toc > summary::-webkit-details-marker { display: none; }
.sp-toc ul { list-style: none; margin: .5rem 0 .3rem; padding: 0;
  columns: 2; column-gap: 1.4rem; }
.sp-toc li { break-inside: avoid; margin-bottom: .2rem; }
.sp-toc a { font-size: .78rem; font-weight: 600; color: var(--ink-soft); text-decoration: none; }
.sp-toc a:hover { color: var(--accent); }
@media (max-width: 640px) { .sp-toc ul { columns: 1; } }

/* ---- prose ---- */
.sp-prose { font-family: var(--font-serif); color: var(--ink); font-size: 1.02rem; line-height: 1.65; }
.sp-prose:focus { outline: none; }
.sp-prose > *:first-child { margin-top: 0; }
.sp-prose h1, .sp-prose h2, .sp-prose h3, .sp-prose h4 {
  font-family: var(--font-display); color: var(--ink); font-weight: 800; line-height: 1.1;
  scroll-margin-top: 1rem; text-wrap: balance;
}
.sp-prose h1 { font-size: clamp(1.9rem, 4.4vw, 2.7rem); letter-spacing: -.01em; margin: 0 0 1rem; }
.sp-prose h2 {
  font-size: 1.6rem; margin: 2.5rem 0 .9rem;
}
/* topic marker — small neon accent tick above each section heading */
.sp-prose h2::before {
  content: ""; display: block; width: 2rem; height: 3px; margin-bottom: .6rem;
  border-radius: 2px; background: linear-gradient(90deg, var(--accent), #bb9af7);
}
.sp-prose h3 { font-size: 1.22rem; margin: 1.7rem 0 .6rem; }
.sp-prose h4 { font-size: 1.02rem; margin: 1.3rem 0 .5rem; font-family: var(--font-label);
  text-transform: uppercase; letter-spacing: .06em; color: var(--ink-soft); }
.sp-prose p { margin: 0 0 1rem; }
.sp-prose a { color: var(--ink); text-decoration: underline; text-underline-offset: 2px;
  text-decoration-thickness: 1px; text-decoration-color: var(--rule-soft); }
.sp-prose a:hover { color: var(--accent); text-decoration-color: var(--accent); }
/* important text — subtle highlighter-pen underlay in the accent colour */
.sp-prose strong { font-weight: 700; color: var(--ink);
  background: linear-gradient(transparent 62%, color-mix(in srgb, var(--accent) 20%, transparent) 0);
}
.sp-prose a strong, .sp-prose strong a { background: none; }
.sp-prose em { font-style: italic; }
.sp-prose hr { border: 0; border-top: 1px solid var(--rule-soft); margin: 2rem 0; }

.sp-prose ul, .sp-prose ol { margin: 0 0 1rem; padding-left: 1.5rem; }
.sp-prose li { margin: 0 0 .35rem; }
.sp-prose ul { list-style: disc; }
.sp-prose ol { list-style: decimal; }
.sp-prose li::marker { color: var(--ink-faint); }
.sp-prose li > ul, .sp-prose li > ol { margin-top: .35rem; }

/* task lists */
.sp-prose li:has(> input[type="checkbox"]) { list-style: none; margin-left: -1.25rem; }
.sp-prose input[type="checkbox"] { margin-right: .5rem; transform: translateY(1px); accent-color: var(--accent); }

/* inline code — highlighted "term" chips, tied visually to the dark code panels */
.sp-prose code {
  font-family: var(--font-mono); font-size: .84em;
  background: #191d2b; color: #a9c7ff;
  border: 1px solid #2a3350; border-radius: 4px;
  padding: .08em .38em; overflow-wrap: anywhere;
}
.sp-prose a code { color: #9db4ff; }
.sp-prose td code, .sp-prose th code { font-size: .82em; }

/* code blocks — dark neon IDE panel */
.sp-prose pre {
  position: relative;
  background: #0b0f1a;
  border: 1px solid #1c2233;
  border-radius: 8px;
  padding: 1.5rem 1.1rem 1.05rem;
  margin: 0 0 1.35rem;
  overflow-x: auto;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.04), 0 14px 34px -20px rgba(0,0,0,.75);
}
/* neon top edge */
.sp-prose pre::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  border-radius: 8px 8px 0 0; opacity: .75;
  background: linear-gradient(90deg, #7aa2f7, #bb9af7 45%, #2ac3de);
}
/* language badge */
.sp-prose pre[data-lang]::before {
  content: attr(data-lang);
  position: absolute; top: 0; right: 0; padding: .34rem .6rem;
  font-family: var(--font-label); font-size: .58rem; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase; color: #6b7699;
}
.sp-prose pre code {
  display: block; background: none; border: 0; padding: 0; color: #c0caf5;
  font-size: .82rem; line-height: 1.6; white-space: pre; overflow-wrap: normal;
}

/* highlight.js — custom neon token theme */
.hljs { color: #c0caf5; background: transparent; }
.hljs-comment, .hljs-quote { color: #5c6a86; font-style: italic; }
.hljs-keyword, .hljs-selector-tag, .hljs-literal, .hljs-section, .hljs-doctag { color: #bb9af7; }
.hljs-string, .hljs-regexp, .hljs-addition { color: #9ece6a; }
.hljs-number, .hljs-symbol, .hljs-bullet, .hljs-link { color: #ff9e64; }
.hljs-title, .hljs-title.function_ { color: #7aa2f7; }
.hljs-built_in, .hljs-title.class_, .hljs-class .hljs-title, .hljs-type { color: #2ac3de; }
.hljs-attr, .hljs-attribute, .hljs-property, .hljs-variable.constant_ { color: #7dcfff; }
.hljs-variable, .hljs-template-variable, .hljs-params { color: #c0caf5; }
.hljs-tag { color: #89ddff; }
.hljs-name, .hljs-selector-id, .hljs-selector-class, .hljs-selector-attr { color: #f7768e; }
.hljs-meta, .hljs-meta .hljs-keyword { color: #e0af68; }
.hljs-deletion { color: #f7768e; }
.hljs-emphasis { font-style: italic; }
.hljs-strong { font-weight: 700; }

/* blockquotes (callouts) */
.sp-prose blockquote {
  border-left: 3px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, var(--paper-2));
  margin: 0 0 1.2rem; padding: .7rem 1rem; color: var(--ink-soft);
  border-radius: 0 4px 4px 0;
}
.sp-prose blockquote p:last-child { margin-bottom: 0; }

/* tables (many are wide -> scroll) */
.sp-prose table {
  display: block; width: max-content; max-width: 100%; overflow-x: auto;
  border-collapse: collapse; margin: 0 0 1.3rem; font-size: .92rem;
  font-family: var(--font-label);
}
.sp-prose th, .sp-prose td { border: 1px solid var(--rule-soft); padding: .45rem .7rem; text-align: left; vertical-align: top; }
.sp-prose thead th { background: var(--paper-2); font-weight: 700; border-bottom: 2px solid var(--ink); }
.sp-prose tbody tr:nth-child(even) { background: color-mix(in srgb, var(--paper-2) 55%, transparent); }
.sp-prose td code, .sp-prose th code { font-size: .84em; }

/* ---- pager ---- */
.sp-pager-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 2.4rem 0 1rem;
  padding-top: 1.2rem; border-top: 1px solid var(--rule); }
.sp-pager-link { display: flex; flex-direction: column; gap: .15rem; padding: .7rem .9rem;
  border: 1px solid var(--rule-soft); text-decoration: none; transition: border-color .12s, background-color .12s; }
.sp-pager-link:hover { border-color: var(--ink); background: var(--paper-2); }
.sp-pager-link.is-empty { border: 0; background: none; pointer-events: none; }
.sp-pager-next { text-align: right; }
.sp-pager-dir { font-family: var(--font-label); letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-faint); font-size: .62rem; font-weight: 700; }
.sp-pager-name { font-family: var(--font-display); color: var(--ink); font-size: .98rem; font-weight: 700; line-height: 1.15; }

.sp-footer { margin-top: 2rem; }
.sp-footer .rule { margin-bottom: .9rem; }
.sp-footer .folio { text-align: center; }
.sp-footer a { text-decoration: none; }
.sp-footer a:hover { color: var(--accent); }

/* ---- mobile nav toggle + drawer ---- */
.sp-nav-toggle {
  display: none; align-items: center; gap: .55rem; cursor: pointer;
  font-family: var(--font-label); letter-spacing: .1em; text-transform: uppercase;
  font-size: .72rem; font-weight: 700; color: var(--ink);
  background: var(--paper); border: 1px solid var(--ink); padding: .55rem .85rem;
}
.sp-nav-toggle-bars { display: inline-flex; flex-direction: column; gap: 4px; width: 18px; }
.sp-nav-toggle-bars span { display: block; height: 2px; background: var(--ink); border-radius: 2px; }

@media (max-width: 900px) {
  .sp-shell { grid-template-columns: 1fr; gap: 1.2rem; }
  .sp-nav-toggle { display: inline-flex; position: sticky; top: .5rem; z-index: 45; }
  .sp-sidebar {
    position: fixed; top: 0; left: 0; z-index: 60; width: min(20rem, 86vw); height: 100vh;
    max-height: none; background: var(--paper); border-right: 1px solid var(--ink);
    padding: 1.2rem 1rem; transform: translateX(-102%); transition: transform .22s ease;
    box-shadow: 0 0 40px rgba(24, 23, 18, 0);
  }
  body.sp-nav-open .sp-sidebar { transform: translateX(0); box-shadow: 0 0 40px rgba(24, 23, 18, .28); }
  body.sp-nav-open::after {
    content: ""; position: fixed; inset: 0; z-index: 55; background: rgba(24, 23, 18, .35);
  }
}

@media (max-width: 480px) {
  .sp-shell { padding: 1rem 1rem 2.5rem; }
  .sp-header-wrap { padding-inline: 1rem; }
  .sp-pager-nav { grid-template-columns: 1fr; }
}