/* ABC E-Learning — Legal pages shared stylesheet
   Clean, readable, mobile-first, auto dark-mode. No external dependencies. */

:root {
  --accent: #4f46e5;
  --accent-soft: #eef0ff;
  --bg: #ffffff;
  --bg-alt: #f7f8fa;
  --surface: #ffffff;
  --border: #e4e6ec;
  --text: #1f2328;
  --text-muted: #5b6474;
  --radius: 12px;
  --maxw: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #8a97ff;
    --accent-soft: #1a1d33;
    --bg: #0d1117;
    --bg-alt: #10151d;
    --surface: #141a22;
    --border: #232a35;
    --text: #e6edf3;
    --text-muted: #9aa4b2;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* Top brand bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  backdrop-filter: saturate(180%) blur(8px);
}
.topbar-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}
.brand .mark {
  width: 26px; height: 26px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px;
}
.topbar a.back {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
.topbar a.back:hover { color: var(--accent); }

/* Layout */
main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.doc-header { margin-bottom: 8px; }
.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 10px;
}
h1 {
  font-size: 30px;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
}
.meta {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 28px;
}

/* Table of contents */
.toc {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin: 0 0 36px;
}
.toc h2 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 0 0 10px;
  border: none;
  padding: 0;
}
.toc ol { margin: 0; padding-left: 20px; }
.toc li { margin: 4px 0; }
.toc a { color: var(--text); text-decoration: none; }
.toc a:hover { color: var(--accent); text-decoration: underline; }

/* Content */
h2 {
  font-size: 20px;
  letter-spacing: -0.01em;
  margin: 40px 0 12px;
  padding-top: 8px;
  scroll-margin-top: 72px;
}
h3 { font-size: 16px; margin: 24px 0 8px; }
p { margin: 0 0 16px; }
ul { margin: 0 0 16px; padding-left: 22px; }
li { margin: 6px 0; }
a { color: var(--accent); }
strong { font-weight: 650; }

/* Highlighted callout (used for subscription disclosure) */
.callout {
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 15.5px;
}
.callout strong { color: var(--text); }

/* Placeholder marker */
.ph {
  background: rgba(217,119,6,0.14);
  color: #b45309;
  padding: 1px 6px;
  border-radius: 5px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}
@media (prefers-color-scheme: dark) {
  .ph { background: rgba(250,204,21,0.16); color: #fde047; }
}

/* Footer */
footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 20px 60px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 14px;
}
footer a { color: var(--text-muted); }

/* Landing (index) cards */
.hero { text-align: center; padding: 24px 0 8px; }
.hero p { color: var(--text-muted); max-width: 520px; margin: 0 auto 8px; }
.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 32px 0;
}
.card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 22px;
}
.card h2 { border: none; margin: 0 0 4px; font-size: 18px; padding: 0; }
.card p { font-size: 14px; color: var(--text-muted); margin: 0 0 16px; }
.card .links { display: flex; flex-direction: column; gap: 8px; }
.card .links a {
  display: block;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 9px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
  transition: border-color .15s, color .15s;
}
.card .links a:hover { border-color: var(--accent); color: var(--accent); }

@media (max-width: 560px) {
  body { font-size: 16px; }
  h1 { font-size: 25px; }
  .cards { grid-template-columns: 1fr; }
  main { padding: 28px 18px 64px; }
}