:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --ink: #1c2733;
  --muted: #64748b;
  --accent: #0f6ab4;
  --accent-ink: #ffffff;
  --good: #157a3d;
  --good-bg: #e5f5ec;
  --bad: #b3372c;
  --bad-bg: #fceceb;
  --warn: #8a6100;
  --warn-bg: #fdf4dd;
  --line: #dde3ea;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 "Segoe UI", system-ui, sans-serif;
}
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.8rem 1.2rem; background: var(--card); border-bottom: 1px solid var(--line);
  flex-wrap: wrap; gap: 0.5rem;
}
header h1 { font-size: 1.15rem; margin: 0; }
main { max-width: 820px; margin: 1.5rem auto; padding: 0 1rem; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 1.5rem; margin-bottom: 1.2rem;
}
.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 0.92rem; }
.error { color: var(--bad); min-height: 1.2em; margin: 0.4rem 0; }
.warn {
  background: var(--warn-bg); color: var(--warn); border-radius: 8px;
  padding: 0.5rem 0.8rem; font-size: 0.9rem;
}
label { display: block; margin: 0.7rem 0; font-weight: 600; }
label input, label select {
  display: block; width: 100%; max-width: 320px; margin-top: 0.25rem;
  padding: 0.5rem 0.7rem; font-size: 1rem; border: 1px solid var(--line);
  border-radius: 8px; background: var(--bg); color: var(--ink);
}
label.chk { font-weight: 400; }
label.chk input { display: inline; width: auto; }
button {
  font: inherit; cursor: pointer; border: none; border-radius: 8px;
  background: var(--accent); color: var(--accent-ink);
  padding: 0.6rem 1.2rem; margin-top: 0.6rem;
}
button:hover { filter: brightness(1.1); }
.linkbtn {
  background: none; color: var(--accent); padding: 0.2rem 0.4rem; margin: 0;
  text-decoration: underline;
}
.chapter-list {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.15rem 1rem; max-height: 300px; overflow-y: auto; margin-top: 0.5rem;
}
.chapter-list label { font-weight: 400; margin: 0.1rem 0; font-size: 0.9rem; }
.chapter-list input { display: inline; width: auto; }
.stem { font-size: 1.08rem; margin: 0.8rem 0; }
.opt {
  display: block; width: 100%; text-align: left; margin: 0.35rem 0;
  background: var(--bg); color: var(--ink); border: 1px solid var(--line);
  padding: 0.6rem 0.9rem;
}
.opt:hover { border-color: var(--accent); filter: none; background: #eaf2fa; }
.opt:disabled { cursor: default; opacity: 0.85; }
.opt.chosen-right { background: var(--good-bg); border-color: var(--good); color: var(--good); font-weight: 600; }
.opt.chosen-wrong { background: var(--bad-bg); border-color: var(--bad); color: var(--bad); font-weight: 600; }
.opt.actual { background: var(--good-bg); border-color: var(--good); color: var(--good); }
#fb-verdict { font-weight: 700; font-size: 1.05rem; }
#fb-verdict.right { color: var(--good); }
#fb-verdict.wrong { color: var(--bad); }
.expl {
  background: var(--bg); border-left: 4px solid var(--accent);
  padding: 0.7rem 1rem; border-radius: 0 8px 8px 0; margin: 0.7rem 0; font-size: 0.95rem;
}
.progressbar {
  height: 8px; background: var(--line); border-radius: 4px; overflow: hidden;
}
#pbar-fill { height: 100%; width: 0; background: var(--accent); transition: width 0.3s; }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--line); }
.statgrid { display: flex; gap: 1rem; flex-wrap: wrap; margin: 0.8rem 0; }
.stat {
  background: var(--bg); border-radius: 10px; padding: 0.7rem 1.1rem; min-width: 120px;
}
.stat b { display: block; font-size: 1.4rem; }
.chapter-tools { margin-top: 0.4rem; }
.acc-good { color: var(--good); font-weight: 600; }
.acc-mid { color: var(--warn); font-weight: 600; }
.acc-bad { color: var(--bad); font-weight: 600; }

/* dashboard */
.progressbar.big { height: 14px; margin: 0.6rem 0 0.3rem; }
.progressbar div { height: 100%; background: var(--accent); transition: width 0.3s; }
.mode-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.modebtn { margin-top: 0; }
.opts-row { display: flex; flex-wrap: wrap; gap: 1.2rem; align-items: center; margin-top: 0.8rem; }
label.inline { display: inline-flex; align-items: center; gap: 0.4rem; margin: 0; }
label.inline select { width: auto; margin: 0; }

/* section cards */
#section-cards {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 1rem; margin-top: 0.8rem;
}
.seccard {
  border: 1px solid var(--line); border-radius: 10px; padding: 0.9rem 1rem;
  background: var(--bg);
}
.seccard.completed { border-color: var(--good); background: var(--good-bg); }
.sec-head { display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem; }
.sec-head h3 { margin: 0; font-size: 1rem; }
.conf {
  font-size: 0.78rem; font-weight: 700; padding: 0.15rem 0.55rem;
  border-radius: 999px; white-space: nowrap;
}
.conf-high { background: var(--good-bg); color: var(--good); }
.conf-mid { background: var(--warn-bg); color: var(--warn); }
.conf-low { background: var(--bad-bg); color: var(--bad); }
.conf-none { background: var(--line); color: var(--muted); }
.conf-early { background: #e8eefc; color: var(--accent); }
.seccard.completed .conf-high { background: var(--good); color: #fff; }
.sec-actions { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.4rem; }
button.small { padding: 0.3rem 0.8rem; font-size: 0.85rem; margin-top: 0; }
.chlist { margin-top: 0.6rem; border-top: 1px solid var(--line); padding-top: 0.5rem; }
.chrow {
  display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap;
  font-size: 0.85rem; padding: 0.35rem 0; border-bottom: 1px dashed var(--line);
}
.chrow .chname { flex: 1 1 100%; font-weight: 600; }
.chrow .chstats { flex: 1 1 auto; }
.chrow button.small { padding: 0.2rem 0.6rem; font-size: 0.78rem; }
.chrow button.small:disabled { opacity: 0.4; cursor: default; }
.flagsum { color: var(--warn); text-decoration: none; border: 1px solid var(--warn-bg);
  background: var(--warn-bg); border-radius: 999px; }
.flagsum:hover { filter: brightness(0.97); }
@media (min-width: 620px) {
  .chrow .chname { flex: 1 1 auto; }
}

/* question bank */
.bank-filters { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.bank-filters select, .bank-filters input[type="text"], #bank-search {
  padding: 0.45rem 0.6rem; border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg); color: var(--ink); font: inherit;
}
.bank-filters button { margin-top: 0; }
.bank-item {
  border: 1px solid var(--line); border-radius: 8px; margin: 0.5rem 0;
  background: var(--bg);
}
.bank-item summary { cursor: pointer; padding: 0.6rem 0.8rem; font-size: 0.93rem; }
.bank-body { padding: 0 1rem 0.8rem; }
.bank-body ul { list-style: none; padding-left: 0.4rem; }
.bank-body li { margin: 0.2rem 0; }
.bank-body li.right-opt { color: var(--good); font-weight: 600; }
.tag {
  display: inline-block; font-size: 0.72rem; font-weight: 700;
  background: var(--line); color: var(--muted);
  border-radius: 999px; padding: 0.1rem 0.5rem; margin-left: 0.3rem;
}
.tag.warn-tag { background: var(--warn-bg); color: var(--warn); }
.tag.fix-tag { background: #e8eefc; color: var(--accent); }
.tag.ai-tag { background: #f3e8fc; color: #6b21a8; }
.modtag {
  background: #f7f0ff; color: #5b21b6; border-left: 4px solid #a855f7;
  border-radius: 0 8px 8px 0; padding: 0.55rem 0.85rem; font-size: 0.9rem;
  margin: 0.5rem 0;
}
.orig { margin-top: 0.6rem; border-top: 1px dashed var(--line); padding-top: 0.5rem; }
.orig summary { cursor: pointer; font-size: 0.85rem; color: var(--muted); }
#ch-filter {
  padding: 0.4rem 0.6rem; border: 1px solid var(--line); border-radius: 8px;
  background: var(--card); color: var(--ink); font: inherit; margin-right: 0.5rem;
}
.chapter-tools { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; margin: 0.5rem 0; }
.pager { display: flex; gap: 1rem; align-items: center; justify-content: center; margin-top: 0.8rem; }

/* admin + account */
.badge {
  display: inline-block; background: var(--bad); color: #fff; font-size: 0.7rem;
  font-weight: 700; border-radius: 999px; padding: 0 0.4rem; margin-left: 0.3rem;
}
.userrow {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem;
  flex-wrap: wrap; border: 1px solid var(--line); border-radius: 8px;
  padding: 0.7rem 0.9rem; margin: 0.5rem 0; background: var(--bg);
}
.uinfo { flex: 1; min-width: 220px; }
.uactions { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }
.okmsg {
  background: var(--good-bg); color: var(--good); border-radius: 8px;
  padding: 0.5rem 0.8rem; font-size: 0.92rem;
}

/* corrected / original switch */
.viewswitch {
  display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
  margin-bottom: 0.7rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--line);
}

/* topic chips */
.taglist { display: flex; flex-wrap: wrap; gap: 0.35rem; margin: 0.4rem 0 0.8rem; }
.chip {
  margin-top: 0; padding: 0.25rem 0.7rem; font-size: 0.82rem; border-radius: 999px;
  background: var(--bg); color: var(--muted); border: 1px solid var(--line);
  text-transform: capitalize;
}
.chip:hover { filter: none; border-color: var(--accent); color: var(--accent); }
.chip.on { background: var(--accent); color: #fff; border-color: var(--accent); }
#prog-tags h4, #prog-qtypes h4 { margin: 0.8rem 0 0.3rem; font-size: 0.95rem; }

/* shared clinical scenario and per-question tags */
.scenario {
  background: var(--bg); border-left: 4px solid var(--muted);
  border-radius: 0 8px 8px 0; padding: 0.6rem 0.9rem; margin: 0.6rem 0;
  font-size: 0.95rem;
}
.scenario p { margin: 0.3rem 0 0; }
.scenario-label {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--muted);
}
.scenario-pos {
  background: var(--accent); color: #fff; border-radius: 999px;
  padding: 0.05rem 0.5rem; margin-left: 0.35rem; text-transform: none;
  letter-spacing: 0; font-size: 0.72rem;
}
.qtags { display: flex; flex-wrap: wrap; gap: 0.3rem; margin: 0.3rem 0 0.5rem; }
.qtags .tag { margin-left: 0; text-transform: capitalize; }
.tag.type-tag { background: var(--accent); color: #fff; }

/* figures pulled from the PDF */
.figures { display: flex; flex-wrap: wrap; gap: 0.8rem; margin: 0.6rem 0; }
.figures figure { margin: 0; max-width: 100%; }
.figures img {
  max-width: 100%; max-height: 340px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; display: block; cursor: zoom-in;
}
.figures img:hover { border-color: var(--accent); }
.figures figcaption { font-size: 0.78rem; color: var(--muted); margin-top: 0.2rem; }
.figures img.zoomed { max-height: none; max-width: none; width: min(95vw, 1200px); cursor: zoom-out; }

/* confidence, timer, notes */
.conf-row { display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; margin: 0.6rem 0; }
.confbtn {
  margin-top: 0; padding: 0.25rem 0.75rem; font-size: 0.85rem;
  background: var(--bg); color: var(--muted); border: 1px solid var(--line);
}
.confbtn:hover { filter: none; border-color: var(--accent); color: var(--accent); }
.confbtn.picked { background: var(--accent); color: #fff; border-color: var(--accent); }
.timer {
  font-weight: 700; font-variant-numeric: tabular-nums; color: var(--accent);
  margin: 0.3rem 0;
}
.timer.low { color: var(--bad); }
.notebox {
  background: var(--warn-bg); color: var(--warn); border-radius: 8px;
  padding: 0.5rem 0.8rem; font-size: 0.92rem;
}

/* completion test banner */
.testbanner {
  background: #e8eefc; color: var(--accent); font-weight: 600;
  border-radius: 8px; padding: 0.6rem 0.9rem;
}