/* course.css — shared stylesheet for the Content Creation course.
   Linked by every lesson & reference doc so the course reads as one book.
   Tufte-inspired: readable serif body, generous margins, restrained colour. */

:root {
  --ink:      #1a1a1a;
  --ink-soft: #4a4a4a;
  --paper:    #fdfcf9;
  --rule:     #e3ddd0;
  --accent:   #b0402e;   /* muted terracotta — used sparingly */
  --accent-2: #2e6b6b;   /* teal for secondary highlights */
  --tint:     #f4efe4;   /* soft callout background */
  --code-bg:  #f0ece2;
  --good:     #2f7d4f;
  --maxw:     42rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, "Georgia", serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.62;
  font-size: 1.06rem;
  margin: 0;
  padding: 2.4rem 1.4rem 6rem;
}

.wrap { max-width: var(--maxw); margin: 0 auto; }

/* ---- Breadcrumb / course nav ---- */
.eyebrow {
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin: 0 0 .6rem;
}

/* ---- Headings ---- */
h1 {
  font-size: 2rem;
  line-height: 1.15;
  margin: .2rem 0 1.4rem;
  letter-spacing: -.01em;
}
h2 {
  font-size: 1.34rem;
  margin: 2.4rem 0 .8rem;
  padding-bottom: .3rem;
  border-bottom: 1px solid var(--rule);
}
h3 { font-size: 1.1rem; margin: 1.6rem 0 .5rem; }

p, li { color: var(--ink); }
strong { font-weight: 700; }
a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(176,64,46,.35); }
a:hover { border-bottom-color: var(--accent); }

/* ---- The "why this matters" mission tie-in ---- */
.mission {
  font-family: -apple-system, system-ui, sans-serif;
  font-size: .9rem;
  color: var(--ink-soft);
  background: var(--tint);
  border-left: 3px solid var(--accent-2);
  padding: .7rem 1rem;
  border-radius: 0 6px 6px 0;
  margin: 0 0 1.8rem;
}

/* ---- Callouts ---- */
.callout {
  background: var(--tint);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  margin: 1.4rem 0;
}
.callout .label {
  font-family: -apple-system, system-ui, sans-serif;
  font-size: .7rem; letter-spacing: .1em; text-transform: uppercase;
  font-weight: 700; color: var(--accent-2); display: block; margin-bottom: .35rem;
}
.example { border-left: 3px solid var(--accent); }
.example .label { color: var(--accent); }

/* ---- Marginnote / aside ---- */
.note {
  font-family: -apple-system, system-ui, sans-serif;
  font-size: .82rem;
  color: var(--ink-soft);
}

/* ---- Definition chips ---- */
.term {
  font-style: italic;
  border-bottom: 1px dotted var(--ink-soft);
}

/* ---- Building-block diagram row ---- */
.blocks { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.4rem 0; }
.block {
  flex: 1 1 7rem; text-align: center;
  font-family: -apple-system, system-ui, sans-serif;
  font-size: .82rem; font-weight: 600;
  background: #fff; border: 1px solid var(--rule);
  border-radius: 8px; padding: .7rem .5rem;
}
.block .n { display:block; font-size:1.3rem; color: var(--accent); }

/* ---- Code / handles ---- */
code {
  font-family: "SF Mono", "JetBrains Mono", Menlo, monospace;
  font-size: .88em; background: var(--code-bg);
  padding: .1em .35em; border-radius: 4px;
}

/* ---- Self-check quiz widget (styles for assets/quiz.js) ---- */
.quiz { margin: 1.6rem 0; }
.quiz .q {
  font-weight: 700; margin: 1.2rem 0 .6rem;
}
.quiz .opt {
  display: block; width: 100%; text-align: left;
  font: inherit; font-size: .98rem; color: var(--ink);
  background: #fff; border: 1px solid var(--rule);
  border-radius: 7px; padding: .6rem .8rem; margin: .4rem 0;
  cursor: pointer; transition: background .12s, border-color .12s;
}
.quiz .opt:hover { border-color: var(--accent-2); }
.quiz .opt.correct { background: #e7f3ea; border-color: var(--good); }
.quiz .opt.wrong   { background: #f7e7e4; border-color: var(--accent); }
.quiz .fb {
  font-family: -apple-system, system-ui, sans-serif;
  font-size: .88rem; margin: .5rem 0 0; padding: .6rem .8rem;
  border-radius: 7px; background: var(--tint); display: none;
}
.quiz .fb.show { display: block; }

/* ---- Footer nav between lessons ---- */
.pager {
  display: flex; justify-content: space-between; gap: 1rem;
  margin-top: 3.5rem; padding-top: 1.2rem; border-top: 1px solid var(--rule);
  font-family: -apple-system, system-ui, sans-serif; font-size: .9rem;
}
.ask {
  margin-top: 2.5rem; padding: 1rem 1.2rem;
  background: var(--tint); border-radius: 8px;
  font-family: -apple-system, system-ui, sans-serif; font-size: .9rem;
  color: var(--ink-soft);
}
.ask strong { color: var(--ink); }

/* ---- Top nav (home link on every lesson/reference) ---- */
.topnav {
  max-width: var(--maxw); margin: 0 auto 2rem; padding-bottom: .7rem;
  border-bottom: 1px solid var(--rule);
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif; font-size: .8rem;
  display: flex; justify-content: space-between; gap: 1rem; align-items: baseline;
}
.topnav a { color: var(--accent-2); text-decoration: none; font-weight: 600; }
.topnav a:hover { text-decoration: underline; }
.topnav .crumb { color: var(--ink-soft); }

/* ---- Index / course home ---- */
.chapter {
  margin: 1.4rem 0; padding: 1.1rem 1.2rem;
  border: 1px solid var(--rule); border-radius: 9px; background: var(--tint);
}
.chapter .chead {
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
  font-weight: 700; font-size: 1.02rem; margin: 0 0 .5rem;
  display: flex; align-items: baseline; gap: .5rem;
}
.chapter .chead .cnum {
  font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent); font-weight: 700;
}
.chapter p { margin: .2rem 0 .7rem; font-size: .95rem; color: var(--ink-soft); }
.lessonlist { list-style: none; margin: 0; padding: 0; }
.lessonlist li { margin: .3rem 0; font-size: .96rem; }
.lessonlist a {
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
  color: var(--accent-2); text-decoration: none; font-weight: 600;
}
.lessonlist a:hover { text-decoration: underline; }
.lessonlist .soon {
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
  color: var(--ink-soft); font-size: .96rem;
}
.lessonlist .tag {
  font-size: .68rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-soft); border: 1px solid var(--rule); border-radius: 4px;
  padding: .05rem .35rem; margin-left: .4rem; vertical-align: middle;
}

/* ---- Dark mode ---- */
@media (prefers-color-scheme: dark) {
  :root {
    --ink:#e8e4d9; --ink-soft:#a8a396; --paper:#1c1b18; --rule:#3a382f;
    --tint:#26251f; --code-bg:#26251f; --accent:#e08267; --accent-2:#6bbcbc;
  }
  .block { background:#232219; }
  .quiz .opt { background:#232219; }
  .quiz .opt.correct { background:#1e2f24; }
  .quiz .opt.wrong { background:#31221f; }
}

/* ---- Print ---- */
@media print {
  body { background:#fff; color:#000; font-size: 11pt; padding: 0; }
  .quiz .opt, .ask, .pager { break-inside: avoid; }
  a { color:#000; border:none; }
}