/* TeachForge public site. Same palette as the app (frontend/src/styles/theme.css).
   Three states: light by default, system dark unless light was chosen, and an
   explicit data-theme="dark". */
:root {
  --ground: #f5f3fc;
  --surface: #ffffff;
  --surface-2: #eeeafa;
  --border: #e1dbf3;
  --ink: #1b1533;
  --ink-muted: #665e85;
  --ink-faint: #9a91b6;
  --brand: #5b3df5;
  --brand-ink: #4429d6;
  --brand-soft: #e9e3ff;
  --amber: #d98614;
  --cyan: #0a9bb8;
  --shadow: 0 1px 2px rgba(27, 21, 51, 0.05), 0 8px 22px rgba(72, 52, 160, 0.07);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #110e1f;
    --surface: #1a1631;
    --surface-2: #241e42;
    --border: #332b57;
    --ink: #efebfc;
    --ink-muted: #a79ec8;
    --ink-faint: #7b729e;
    --brand: #9481ff;
    --brand-ink: #b7aaff;
    --brand-soft: rgba(148, 129, 255, 0.18);
    --amber: #f0b455;
    --cyan: #49c4de;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.34);
  }
}
:root[data-theme="dark"] {
  --ground: #110e1f;
  --surface: #1a1631;
  --surface-2: #241e42;
  --border: #332b57;
  --ink: #efebfc;
  --ink-muted: #a79ec8;
  --ink-faint: #7b729e;
  --brand: #9481ff;
  --brand-ink: #b7aaff;
  --brand-soft: rgba(148, 129, 255, 0.18);
  --amber: #f0b455;
  --cyan: #49c4de;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 16px/1.6 "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--brand-ink); }
h1, h2, h3 { font-family: "Bricolage Grotesque", system-ui, sans-serif; letter-spacing: -0.02em; line-height: 1.15; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

header.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 20px 0; }
.brand { display: flex; align-items: center; gap: 10px; font-family: "Bricolage Grotesque", system-ui, sans-serif; font-weight: 700; font-size: 1.2rem; color: var(--ink); text-decoration: none; }
.mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; color: #fff; background: linear-gradient(140deg, #7c63ff, #b935a8 120%); }
.btn { display: inline-block; padding: 10px 18px; border-radius: 10px; font-weight: 700; font-size: 0.92rem; text-decoration: none; border: 1px solid var(--border); color: var(--ink); background: var(--surface); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; box-shadow: 0 6px 16px rgba(91, 61, 245, 0.3); }

.hero { padding: 48px 0 32px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: center; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 16px; }
.hero h1 span { color: var(--brand); }
.hero p { color: var(--ink-muted); font-size: 1.08rem; margin: 0 0 24px; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow); padding: 22px; }
.score { font-family: "Bricolage Grotesque", system-ui, sans-serif; font-size: 2.6rem; font-weight: 700; color: var(--brand); }
.score small { font-size: 1.1rem; color: var(--ink-faint); }
.q { display: flex; justify-content: space-between; gap: 12px; border-top: 1px solid var(--border); padding: 8px 0; font-size: 0.9rem; }
.q span:last-child { font-family: ui-monospace, monospace; color: var(--ink-muted); }

section { padding: 36px 0; }
section > h2 { font-size: 1.7rem; margin: 0 0 18px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 20px; box-shadow: var(--shadow); }
.card h3 { margin: 0 0 8px; font-size: 1.1rem; }
.card p, .card li { color: var(--ink-muted); font-size: 0.95rem; margin: 0; }
.card ol, .card ul { padding-left: 20px; margin: 0; }
.card li { margin: 4px 0; }
.step { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 999px; background: var(--brand-soft); color: var(--brand); font-weight: 700; margin-bottom: 10px; }

.legal { max-width: 760px; padding: 24px 0 48px; }
.legal h1 { font-size: 2.2rem; margin: 8px 0 4px; }
.legal .updated { color: var(--ink-faint); font-size: 0.9rem; margin-bottom: 24px; }
.legal h2 { font-size: 1.3rem; margin: 30px 0 8px; }
.legal p, .legal li { color: var(--ink-muted); }
.legal li { margin: 6px 0; }
.legal strong { color: var(--ink); }
.note { background: var(--surface-2); border-radius: 12px; padding: 14px 16px; font-size: 0.9rem; color: var(--ink-muted); }

footer { border-top: 1px solid var(--border); padding: 24px 0 40px; color: var(--ink-faint); font-size: 0.88rem; }
footer nav { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 8px; }
footer a { color: var(--ink-muted); text-decoration: none; font-weight: 600; }

@media (max-width: 760px) {
  .hero, .grid3, .grid2 { grid-template-columns: 1fr; }
  .hero { padding-top: 24px; }
}