/* ENO-QUIZ — minimal, fast, mobile-first. No frameworks, no fonts to download. */
:root {
  --bg: #faf7f2;
  --card: #ffffff;
  --ink: #2b2420;
  --muted: #7a6f66;
  --accent: #7d1d3f;        /* wine */
  --accent-ink: #ffffff;
  --ok: #2e7d4f;
  --ok-bg: #e6f4ec;
  --bad: #b3261e;
  --bad-bg: #fdecea;
  --line: #e5ddd3;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1614;
    --card: #241f1c;
    --ink: #ede7e0;
    --muted: #a89d92;
    --accent: #c94f74;
    --accent-ink: #1a1614;
    --ok: #6fce9a;
    --ok-bg: #1e3328;
    --bad: #ef8a84;
    --bad-bg: #3a211f;
    --line: #3a322c;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}
main { flex: 1; width: 100%; max-width: 680px; margin: 0 auto; padding: 0 1rem 2rem; }
.hidden { display: none !important; }

.site-header { text-align: center; padding: 2rem 1rem 0.5rem; }
.logo { margin: 0; font-size: 1.9rem; letter-spacing: 0.06em; }
.logo span { color: var(--accent); }
.tagline { margin: 0.3rem 0 0; color: var(--muted); font-size: 0.95rem; }

h2 { font-size: 1.35rem; margin: 1.4rem 0 1rem; }

/* ---------- track selection ---------- */
.track-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 0.8rem; }
.track-card {
  text-align: left; font: inherit; color: inherit;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem 1.1rem; cursor: pointer; position: relative;
  transition: transform 0.08s ease, border-color 0.08s ease;
}
.track-card:hover, .track-card:focus-visible { transform: translateY(-2px); border-color: var(--accent); }
.track-card h3 { margin: 0.1rem 0 0.35rem; font-size: 1.05rem; }
.track-card p { margin: 0; color: var(--muted); font-size: 0.88rem; }
.track-card.flagship { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.track-card.locked { opacity: 0.72; }
.track-badge {
  display: inline-block; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em;
  background: var(--accent); color: var(--accent-ink);
  border-radius: 999px; padding: 0.12rem 0.55rem; margin-bottom: 0.2rem;
}
.track-badge.sampler { background: var(--muted); }
.track-badge.lock { background: transparent; color: var(--muted); border: 1px solid var(--line); }

.stats-strip { margin-top: 1.2rem; color: var(--muted); font-size: 0.85rem; text-align: center; }

/* ---------- levels ---------- */
.level-grid { display: grid; gap: 0.8rem; }
.level-grid button {
  font: inherit; color: inherit; text-align: left;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.9rem 1.1rem; cursor: pointer;
}
.level-grid button:hover { border-color: var(--accent); }
.level-grid .lvl-name { font-weight: 600; }
.level-grid .lvl-desc { display: block; color: var(--muted); font-size: 0.85rem; }

/* ---------- quiz ---------- */
.quiz-top { display: flex; align-items: center; gap: 0.8rem; margin-top: 1.2rem; }
.progress { flex: 1; height: 6px; background: var(--line); border-radius: 999px; overflow: hidden; }
#progress-bar { height: 100%; width: 0; background: var(--accent); transition: width 0.25s ease; }
#quiz-counter { font-size: 0.85rem; color: var(--muted); white-space: nowrap; }

.options { display: grid; gap: 0.7rem; }
.options button {
  font: inherit; color: inherit; text-align: left;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.85rem 1rem; cursor: pointer;
}
.options button:hover:not(:disabled) { border-color: var(--accent); }
.options button:disabled { cursor: default; }
.options button.correct { background: var(--ok-bg); border-color: var(--ok); }
.options button.wrong { background: var(--bad-bg); border-color: var(--bad); }

.feedback { margin-top: 1.1rem; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; }
#feedback-verdict { font-weight: 700; margin: 0 0 0.4rem; }
#feedback-verdict.ok { color: var(--ok); }
#feedback-verdict.bad { color: var(--bad); }
#feedback-explanation { margin: 0 0 0.7rem; }
.citation {
  margin: 0 0 1rem; padding: 0.6rem 0.9rem; border-left: 3px solid var(--accent);
  background: var(--bg); border-radius: 0 8px 8px 0;
  font-size: 0.83rem; color: var(--muted);
}
.citation .src { font-weight: 600; color: var(--ink); }
.citation .quote-text { font-style: italic; }

button.primary {
  font: inherit; font-weight: 600;
  background: var(--accent); color: var(--accent-ink);
  border: none; border-radius: 999px; padding: 0.65rem 1.6rem; cursor: pointer;
}
button.primary:hover { filter: brightness(1.08); }

.back-link {
  font: inherit; background: none; border: none; color: var(--muted);
  cursor: pointer; padding: 0.2rem 0; font-size: 0.9rem;
}
.back-link:hover { color: var(--accent); }

/* ---------- summary ---------- */
.score { font-size: 2.2rem; font-weight: 700; margin: 0.5rem 0 1rem; }
#summary-topics { display: grid; gap: 0.4rem; margin-bottom: 1.4rem; }
.topic-row { display: flex; justify-content: space-between; font-size: 0.92rem; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 0.45rem 0.8rem; }
.topic-row .weak { color: var(--bad); font-weight: 600; }
.summary-actions { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }

/* ---------- waitlist ---------- */
.waitlist-note { color: var(--muted); font-size: 0.9rem; }
.want-count { color: var(--ok); font-weight: 600; min-height: 1.4em; }

/* ---------- daily challenge + home actions ---------- */
.daily-card {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  background: var(--accent); color: var(--accent-ink); border: none;
  border-radius: var(--radius); padding: 0.9rem 1.1rem; margin-bottom: 1.2rem;
  cursor: pointer; text-align: left; font: inherit;
}
.daily-card:hover { filter: brightness(1.08); }
.daily-left { display: flex; flex-direction: column; gap: 0.15rem; }
.daily-title { font-weight: 700; font-size: 1.05rem; }
.daily-sub { font-size: 0.82rem; opacity: 0.85; }
.daily-streak { font-size: 1.15rem; font-weight: 700; white-space: nowrap; }
.home-actions { display: flex; gap: 0.8rem; margin-top: 1rem; flex-wrap: wrap; }
.ghost-btn {
  background: none; border: 1px solid var(--line); border-radius: 8px;
  color: var(--ink); padding: 0.45rem 0.9rem; font: inherit; font-size: 0.9rem; cursor: pointer;
}
.ghost-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- progress / mastery map ---------- */
.mastery-row {
  display: grid; grid-template-columns: 1fr; gap: 0.2rem;
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  padding: 0.55rem 0.8rem; margin-bottom: 0.5rem; font-size: 0.92rem;
}
.mastery-bar { height: 8px; background: var(--line); border-radius: 4px; overflow: hidden; }
.mastery-fill { height: 100%; background: var(--ok); border-radius: 4px; }
.mastery-fill.low { background: var(--bad); }
.mastery-pct { color: var(--muted); font-size: 0.8rem; }
.transfer { margin-top: 1.6rem; }
.transfer h3 { margin-bottom: 0.2rem; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line); margin-top: 2rem; padding: 1.1rem 1rem 1.6rem;
  text-align: center; font-size: 0.78rem; color: var(--muted);
  max-width: 680px; margin-left: auto; margin-right: auto;
}
.review-note { opacity: 0.8; }
.footer-links a { color: var(--muted); text-decoration: underline; }
.footer-links a:hover { color: var(--accent); }

/* ---------- static pages (about, privacy) ---------- */
.static-page { width: 100%; max-width: 680px; margin: 0 auto; padding: 0 1rem; }
.static-page .card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.4rem 1.5rem 1.6rem;
}
.static-page h3 { margin: 1.3rem 0 0.4rem; font-size: 1.02rem; }
.static-meta { color: var(--muted); font-size: 0.85rem; margin-top: -0.4rem; }