:root {
  --navy: #102a43;
  --navy-2: #243b53;
  --ink: #1b2838;
  --muted: #627d98;
  --line: #d9e2ec;
  --paper: #f7f4ec;
  --card: #ffffff;
  --gold: #c4a35a;
  --gold-2: #e8d5a3;
  --good: #0f7b4a;
  --bad: #b42318;
  --warn: #b45309;
  --blue: #1d4e89;
  --shadow: 0 12px 40px rgba(16, 42, 67, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "DM Sans", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #e8d5a3 0%, transparent 45%),
    radial-gradient(900px 400px at 100% 0%, #d6e4f0 0%, transparent 40%),
    var(--paper);
  min-height: 100vh;
}

.wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }

.topbar {
  background: var(--navy);
  color: #fff;
  padding: 10px 0;
  font-size: 13px;
  letter-spacing: .02em;
}
.topbar .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.topbar a { color: var(--gold-2); }

header.site {
  padding: 28px 0 8px;
}
.brand {
  display: flex;
  gap: 14px;
  align-items: center;
}
.mark {
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(160deg, var(--navy), #1d4e89);
  color: var(--gold-2);
  display: grid; place-items: center;
  font-weight: 800; font-size: 18px;
  box-shadow: var(--shadow);
}
.brand h1 { margin: 0; font-size: 1.45rem; letter-spacing: -.02em; }
.brand p { margin: 2px 0 0; color: var(--muted); font-size: .95rem; }

.notice {
  margin: 18px 0 8px;
  background: #fff8e8;
  border: 1px solid #ead7a2;
  color: #6b4f12;
  padding: 12px 14px;
  border-radius: 12px;
  font-size: .92rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr .8fr;
  gap: 20px;
  margin: 22px 0 28px;
}
.hero-card, .panel, .test-card, .result-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.hero-card { padding: 24px; }
.hero-card h2 { margin: 0 0 8px; font-size: 1.7rem; line-height: 1.2; }
.hero-card p { color: var(--navy-2); }
.dates { display: grid; gap: 8px; margin-top: 16px; }
.date-row {
  display: flex; justify-content: space-between; gap: 8px;
  padding: 10px 12px; background: #f8fafc; border-radius: 10px;
  font-size: .94rem;
}
.date-row b { color: var(--navy); }
.side-stats { padding: 20px; }
.stat { margin-bottom: 14px; }
.stat span { display: block; color: var(--muted); font-size: .82rem; text-transform: uppercase; letter-spacing: .04em; }
.stat strong { font-size: 1.35rem; }

.section-title { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.section-title h2 { margin: 0 0 12px; }
.muted { color: var(--muted); }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.test-card {
  padding: 18px;
  display: flex; flex-direction: column; gap: 8px;
}
.test-card h3 { margin: 0; font-size: 1.08rem; }
.test-card p { margin: 0; color: var(--muted); font-size: .92rem; flex: 1; }
.meta { font-size: .82rem; color: var(--navy-2); display: flex; gap: 10px; flex-wrap: wrap; }
.pill {
  display: inline-flex; align-items: center;
  background: #eef4fb; color: var(--blue);
  border-radius: 999px; padding: 3px 8px; font-weight: 600;
}

button, .btn {
  appearance: none; border: 0; cursor: pointer;
  border-radius: 10px; padding: 10px 14px;
  font: inherit; font-weight: 700;
  background: var(--navy); color: #fff;
}
button.secondary, .btn.secondary { background: #e7eef6; color: var(--navy); }
button.ghost, .btn.ghost { background: transparent; color: var(--navy); border: 1px solid var(--line); }
button.gold { background: var(--gold); color: #1b1404; }
button:disabled { opacity: .55; cursor: not-allowed; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }

.topics { margin: 28px 0; }
.topic-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.topic {
  background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 14px;
}
.topic h4 { margin: 0 0 4px; }
.topic p { margin: 0; font-size: .86rem; color: var(--muted); }

.exam-shell { padding-bottom: 40px; }
.exam-bar {
  position: sticky; top: 0; z-index: 5;
  background: rgba(16,42,67,.96); color: #fff;
  backdrop-filter: blur(8px);
  padding: 10px 0;
}
.exam-bar .wrap { display: flex; align-items: center; gap: 14px; justify-content: space-between; }
.timer { font-variant-numeric: tabular-nums; font-weight: 800; color: var(--gold-2); }
.timer.warn { color: #fecaca; }
.progress {
  height: 8px; background: #35536b; border-radius: 99px; overflow: hidden; min-width: 140px; flex: 1;
}
.progress > span { display: block; height: 100%; background: var(--gold); }

.question-card { margin-top: 18px; padding: 22px; background: #fff; border-radius: 18px; border: 1px solid var(--line); box-shadow: var(--shadow); }
.q-kicker { color: var(--muted); font-size: .82rem; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 8px; }
.stem { font-size: 1.12rem; line-height: 1.45; }
.passage, .compare, table.data {
  background: #f8fafc; border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin: 12px 0;
}
.passage { font-family: "Source Serif 4", Georgia, serif; line-height: 1.55; }
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; font-family: ui-monospace, monospace; font-size: .9rem; white-space: pre-wrap; }
.compare h5 { margin: 0 0 6px; font-family: "DM Sans", sans-serif; }
table.data { width: 100%; border-collapse: collapse; display: table; padding: 0; overflow: hidden; }
table.data th, table.data td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; font-size: .9rem; }
table.data th { background: #eef2f7; }
.choices { display: grid; gap: 8px; margin-top: 14px; }
.choice {
  text-align: left; background: #fff; color: var(--ink); border: 1px solid var(--line);
  padding: 12px 14px; border-radius: 12px; font-weight: 500;
}
.choice.selected { border-color: var(--navy); background: #eef4fb; box-shadow: inset 0 0 0 1px var(--navy); }
.choice.correct { border-color: var(--good); background: #e8f8ef; }
.choice.wrong { border-color: var(--bad); background: #fdecec; }
.nav-btns { display: flex; justify-content: space-between; gap: 8px; margin-top: 16px; }
.qmap { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.qmap button {
  width: 36px; height: 36px; padding: 0; border-radius: 8px;
  background: #e7eef6; color: var(--navy); font-size: .85rem;
}
.qmap button.on { outline: 2px solid var(--gold); }
.qmap button.answered { background: var(--navy); color: #fff; }
.qmap button.flagged { background: #fff3d6; color: #7a4d00; }
.explain { margin-top: 12px; padding: 12px; background: #f3faf6; border-radius: 10px; border: 1px solid #c6ead6; }

.result-card { padding: 24px; margin-top: 18px; }
.score-xl { font-size: 3rem; margin: 0; }
.bars { display: grid; gap: 8px; margin-top: 16px; }
.bar-row { display: grid; grid-template-columns: 160px 1fr 48px; gap: 8px; align-items: center; font-size: .9rem; }
.bar { height: 10px; background: #e7eef6; border-radius: 99px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--navy); }
.history { margin-top: 18px; font-size: .92rem; }
.history table { width: 100%; border-collapse: collapse; }
.history td, .history th { padding: 8px; border-bottom: 1px solid var(--line); text-align: left; }

.oral-q { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 18px; margin: 12px 0; }
.oral-q h3 { margin-top: 0; }
.tips { background: #f8fafc; border-radius: 10px; padding: 12px; }
textarea {
  width: 100%; min-height: 120px; border-radius: 10px; border: 1px solid var(--line);
  padding: 10px; font: inherit;
}

footer {
  margin: 40px 0 24px; color: var(--muted); font-size: .85rem;
}

.hidden { display: none !important; }

.account-slot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.account-slot button { padding: 6px 10px; font-size: 12px; }
.account-slot .who { color: var(--gold-2); font-weight: 700; }
.topbar .account-slot button.ghost { color: #fff; border-color: #7b93ab; }
.topbar .account-slot button.secondary { background: #243b53; color: #fff; }

.modal {
  position: fixed; inset: 0; z-index: 40;
  background: rgba(16,42,67,.55);
  display: grid; place-items: center; padding: 16px;
}
.modal-card {
  width: min(420px, 100%);
  background: #fff;
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
}
.modal-card h2 { margin: 0 0 8px; }
.modal-card label { display: block; font-size: .85rem; font-weight: 700; margin: 10px 0 4px; }
.modal-card input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; font: inherit;
}
.form-error { color: var(--bad); font-size: .9rem; min-height: 1.2em; margin-top: 8px; }
.tabs { display: flex; gap: 6px; margin-bottom: 10px; }

.eval-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 14px; margin-top: 16px; }
.ready {
  display: inline-block; border-radius: 999px; padding: 4px 10px; font-weight: 800; font-size: .82rem;
}
.ready.baseline { background: #eef2f7; color: var(--navy); }
.ready.needs-work { background: #fdecec; color: var(--bad); }
.ready.borderline { background: #fff3d6; color: #7a4d00; }
.ready.practice-ready { background: #e8f8ef; color: var(--good); }
.reco {
  background: #102a43; color: #fff; border-radius: 16px; padding: 18px;
}
.reco h3 { margin: 0 0 6px; color: var(--gold-2); }
.reco p { margin: 0 0 12px; color: #d9e2ec; }
.spark { display: flex; align-items: flex-end; gap: 4px; height: 64px; }
.spark i {
  display: block; width: 14px; background: var(--navy); border-radius: 4px 4px 0 0; min-height: 4px;
}
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 14px 0; }
.stat-box { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 14px; }
.stat-box span { display: block; color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
.stat-box strong { font-size: 1.5rem; }
.improve li { margin: 6px 0; }
.save-msg { font-size: .85rem; color: var(--good); }

.prep-strip {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 20px;
  margin: 8px 0 24px;
}
.prep-strip h2 { margin: 8px 0 6px; font-size: 1.2rem; }
.prep-strip > div > p { margin: 0; color: var(--muted); }
.plan-steps {
  list-style: none;
  margin: 14px 0 8px;
  padding: 0;
  display: grid;
  gap: 10px;
}
.plan-steps li {
  display: grid;
  grid-template-columns: minmax(190px, .8fr) 1.2fr;
  gap: 10px;
  align-items: start;
}
.plan-steps span { color: var(--muted); font-size: .9rem; }
.bar-row { grid-template-columns: minmax(140px, 180px) 1fr 48px; }

@media (max-width: 900px) {
  .hero-grid, .grid, .topic-list, .compare, .bar-row, .eval-grid, .stat-row, .plan-steps li { grid-template-columns: 1fr; }
  .exam-bar .wrap { flex-wrap: wrap; }
}