:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #1a1d24;
  --muted: #5b6472;
  --line: #e3e7ed;
  --accent: #2f5bea;
  --accent-ink: #ffffff;
  --hi: #1a7f4b;     /* High confidence */
  --hi-bg: #e6f4ec;
  --med: #b06a00;    /* Medium */
  --med-bg: #fcefd9;
  --low: #6b7280;    /* Low */
  --low-bg: #eef0f3;
  --unk: #9aa1ac;    /* Unknown */
  --unk-bg: #f1f3f6;
  --stem: #6024c0;
  --stem-bg: #efe6fb;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

.site-header { background: linear-gradient(120deg, #1f2b53, #2f5bea); color: #fff; padding: 28px 0; }
.site-header h1 { margin: 0 0 4px; font-size: 1.7rem; letter-spacing: -0.02em; }
.tagline { margin: 0; opacity: .9; font-size: .95rem; }

main.wrap { padding-top: 24px; padding-bottom: 48px; min-height: 50vh; }

/* Toolbar */
.toolbar {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  background: var(--card); border: 1px solid var(--line);
  padding: 12px; border-radius: var(--radius); margin-bottom: 18px;
}
.toolbar input[type=search], .toolbar select {
  padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px;
  font-size: .92rem; background: #fff; color: var(--ink);
}
.toolbar input[type=search] { flex: 1 1 220px; min-width: 160px; }
.check { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: .9rem; }
.count { margin-left: auto; color: var(--muted); font-size: .85rem; }

/* Catalog grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; cursor: pointer; text-align: left; font: inherit; color: inherit;
  display: flex; flex-direction: column; gap: 8px; transition: box-shadow .15s, transform .15s;
}
.card:hover, .card:focus-visible { box-shadow: 0 6px 22px rgba(20,30,60,.12); transform: translateY(-2px); outline: none; }
.card h3 { margin: 0; font-size: 1.05rem; letter-spacing: -0.01em; }
.card .school { color: var(--muted); font-size: .9rem; }
.card .row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.card dl { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; margin: 6px 0 0; font-size: .85rem; }
.card dt { color: var(--muted); }
.card dd { margin: 0; }

/* Badges */
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: .72rem; font-weight: 600; letter-spacing: .01em; }
.badge.stem { background: var(--stem-bg); color: var(--stem); }
.badge.stem-partial { background: var(--med-bg); color: var(--med); }
.badge.stem-no, .badge.stem-unknown { background: var(--unk-bg); color: var(--unk); }
.badge.qa-pass { background: var(--hi-bg); color: var(--hi); }
.badge.qa-fail { background: var(--med-bg); color: var(--med); }

.conf { display: inline-block; padding: 1px 7px; border-radius: 6px; font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }
.conf-high { background: var(--hi-bg); color: var(--hi); }
.conf-medium { background: var(--med-bg); color: var(--med); }
.conf-low { background: var(--low-bg); color: var(--low); }
.conf-unknown { background: var(--unk-bg); color: var(--unk); }

/* Detail / dossier */
.back { color: var(--accent); text-decoration: none; font-size: .9rem; }
.back:hover { text-decoration: underline; }
.dossier-head { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 18px; }
.dossier-head h2 { margin: 0 0 4px; font-size: 1.4rem; letter-spacing: -0.02em; }
.dossier-head .sub { color: var(--muted); margin: 0 0 12px; }
.dossier-head .summary { margin: 12px 0 0; padding-top: 12px; border-top: 1px solid var(--line); color: #2c333f; }
.head-badges { display: flex; flex-wrap: wrap; gap: 8px; }

.section { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 20px 14px; margin-bottom: 14px; }
.section > h3 { font-size: 1.05rem; margin: 16px 0 6px; }
.field { display: grid; grid-template-columns: 200px 1fr; gap: 6px 16px; padding: 10px 0; border-top: 1px solid var(--line); }
.field:first-of-type { border-top: none; }
.field .label { color: var(--muted); font-weight: 600; font-size: .85rem; }
.field .val { font-size: .92rem; }
.field .val.unknown { color: var(--unk); font-style: italic; }
.field .meta { margin-top: 4px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; font-size: .76rem; color: var(--muted); }
.field .meta a { color: var(--accent); text-decoration: none; }
.field .meta a:hover { text-decoration: underline; }
.note { display: block; margin-top: 3px; font-size: .8rem; color: var(--muted); }

.deadlines { list-style: none; margin: 4px 0 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.deadlines li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; }
.dl-round { font-weight: 600; color: var(--ink); }
.dl-date { font-variant-numeric: tabular-nums; }
.dl-dec { color: var(--muted); font-size: .82rem; }
.deadlines .note { flex-basis: 100%; margin-top: 0; }

.sources ol { margin: 6px 0 0; padding-left: 20px; }
.sources li { margin-bottom: 6px; font-size: .85rem; }
.sources a { color: var(--accent); word-break: normal; overflow-wrap: anywhere; }
.src-host { color: var(--muted); font-size: .75rem; }
.prio { color: var(--muted); font-size: .75rem; }

/* Detail toolbar + "Hide research details" toggle.
   The research audit trail — per-field notes, the confidence/source/verified meta row,
   and the Sources list — shows by default; checking the toggle adds .hide-research to
   #dossier to collapse it. */
.detail-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.research-toggle { cursor: pointer; user-select: none; }
#dossier.hide-research .field .meta,
#dossier.hide-research .note,
#dossier.hide-research .sources { display: none; }

.status { color: var(--muted); padding: 30px 0; text-align: center; }
.status.error { color: #b3261e; }

.site-footer { border-top: 1px solid var(--line); background: #fff; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; padding: 16px 20px; color: var(--muted); font-size: .82rem; }
code { background: #eef0f3; padding: 1px 5px; border-radius: 4px; font-size: .85em; }

@media (max-width: 560px) {
  .field { grid-template-columns: 1fr; gap: 2px; }
}