:root {
  --ink: #122226;
  --muted: #5b6b70;
  --paper: #f4f1ea;
  --card: #fffdf8;
  --line: #d9d0c3;
  --teal: #1a2370;
  --teal-2: #283593;
  --gold: #9b59d0;
  --gold-2: #7b3fb0;
  --danger: #9b2c2c;
  --ok: #1f6b4a;
  --warn: #8a5a12;
  --admin: #0e1618;
  --admin-card: #172226;
  --shadow: 0 10px 30px rgba(11, 61, 74, 0.08);
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.5;
}
a { color: var(--teal-2); }
.app-header, .admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  border-bottom: 1px solid #111;
  background: #000;
  color: #e8eef8;
}
.wordmark { height: 28px; width: auto; display: block; background: #000; }
.brand { display: flex; gap: 12px; align-items: center; text-decoration: none; color: #e8eef8; }
.mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--teal);
  display: grid; place-items: center;
}
.brand-name { font-family: var(--serif); font-weight: 600; font-size: 1.1rem; }
.brand-sub { display: block; font-size: 0.72rem; color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }
.nav { display: flex; gap: 16px; align-items: center; font-size: 0.92rem; }
.nav a { text-decoration: none; color: inherit; }
.app-header .nav, .admin-header .nav { color: #cfd6ea; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 28px 20px 80px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.02em; }
h1 { font-size: 2rem; margin: 0 0 8px; }
.lede { color: var(--muted); max-width: 62ch; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; margin-top: 22px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 6px; font-size: 1.15rem; }
.meta { color: var(--muted); font-size: 0.82rem; }
.btn, button.btn {
  display: inline-block;
  background: var(--teal);
  color: #fff;
  border: 0;
  border-radius: 999px;
  padding: 10px 16px;
  text-decoration: none;
  font: inherit;
  cursor: pointer;
}
.btn.gold { background: var(--gold-2); }
.btn.ghost { background: transparent; color: var(--teal); border: 1px solid var(--line); }
.btn.danger { background: var(--danger); }
.progress {
  height: 8px; background: #e7e0d6; border-radius: 99px; overflow: hidden; margin: 8px 0 14px;
}
.progress > span { display: block; height: 100%; background: var(--teal); }
.flash { background: #fff3d6; border: 1px solid #e8b86d; padding: 10px 14px; border-radius: 10px; }
.auth {
  max-width: 420px; margin: 8vh auto; background: var(--card);
  border: 1px solid var(--line); border-radius: 18px; padding: 28px; box-shadow: var(--shadow);
}
label { display: block; font-size: 0.85rem; margin: 12px 0 4px; }
input, select, textarea {
  width: 100%; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--line); font: inherit; background: #fff;
}
.section { margin: 22px 0; }
.section p { max-width: 70ch; }
.email {
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #fff;
  font-size: 0.95rem;
}
.email-bar { background: #efe8dc; padding: 10px 14px; display: grid; gap: 4px; }
.email-body { padding: 16px 14px; white-space: pre-wrap; }
.poster {
  background: var(--teal); color: #f4f1ea; border-radius: 16px; padding: 28px;
  text-align: center; max-width: 420px;
}
.poster .qr {
  width: 148px; height: 148px; margin: 16px auto; background:
    repeating-conic-gradient(#0b3d4a 0 25%, #f4f1ea 0 50%) 0 0 / 16px 16px;
  border: 8px solid #fff;
}
.prompt-box {
  width: 280px; background: #111; color: #eee; border-radius: 22px; padding: 22px; margin: 12px 0;
}
.consent {
  border: 1px solid var(--line); border-radius: 12px; padding: 18px; background: #fff; max-width: 460px;
}
.choices { display: grid; gap: 8px; margin-top: 16px; }
.choice {
  text-align: left; background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 14px; cursor: pointer; font: inherit;
}
.choice.selected { border-color: var(--teal); background: #e7f3f5; }
.choice.good { border-color: var(--ok); background: #e8f6ee; }
.choice.missed { border-color: var(--gold-2); background: #fff6e6; }
.choice.decoy { border-color: var(--danger); background: #fdeeee; }
.quiz-q { margin: 18px 0; }
.why { font-size: 0.9rem; color: var(--muted); margin-top: 6px; }
.coach { margin-top: 28px; border-top: 1px dashed var(--line); padding-top: 16px; }
.coach pre {
  white-space: pre-wrap; background: #fff; border: 1px solid var(--line);
  border-radius: 10px; padding: 12px; font-family: var(--sans);
}
.cert {
  background: #fff; border: 12px solid var(--teal); padding: 40px; text-align: center;
  box-shadow: var(--shadow);
}
.cert small { letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); }
body.admin { background: var(--admin); color: #d7e0e2; }
body.admin .admin-header { background: #121c1e; border-color: #243033; }
body.admin .brand, body.admin .nav a { color: #e8eef0; }
body.admin .wrap { color: #d7e0e2; }
body.admin .card, body.admin .auth { background: var(--admin-card); border-color: #2a3a3d; color: #e8eef0; box-shadow: none; }
body.admin input, body.admin select, body.admin textarea { background: #0e1618; color: #e8eef0; border-color: #2a3a3d; }
body.admin table th, body.admin table td { border-color: #2a3a3d; }
.hero {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: center;
  padding: 48px 0 20px;
}
.hero-card { background: var(--teal); color: #f4f1ea; border-radius: 20px; padding: 24px; }
@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; }
  .app-header, .admin-header { flex-direction: column; gap: 8px; align-items: flex-start; }
}