/* AI in Medical Education Lab — shared stylesheet */
:root {
  --bg: #faf9f6;
  --bg-card: #ffffff;
  --ink: #1c2733;
  --ink-soft: #4a5a6a;
  --brand: #17549a;
  --brand-deep: #103d72;
  --accent: #b98a1f;
  --accent-text: #7d5a10;
  --line: #e3ded4;
  --badge-live-bg: #e4f2e8; --badge-live-ink: #1e6b3a;
  --badge-prog-bg: #e8effa; --badge-prog-ink: #17549a;
  --badge-dev-bg: #faf0dc;  --badge-dev-ink: #6f4f0e;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10161d;
    --bg-card: #182028;
    --ink: #e8e6e1;
    --ink-soft: #a8b2bc;
    --brand: #7aaede;
    --brand-deep: #a9c9ea;
    --accent: #d9b45c;
    --accent-text: #d9b45c;
    --line: #2b3641;
    --badge-live-bg: #1c3325; --badge-live-ink: #8fd1a5;
    --badge-prog-bg: #1b2a40; --badge-prog-ink: #9cc2ec;
    --badge-dev-bg: #33291a;  --badge-dev-ink: #dfc07a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
h1, h2, h3, .brand { font-family: "Source Serif 4", Georgia, "Times New Roman", serif; }
h1 { font-size: 2.1rem; line-height: 1.2; margin: 0 0 .5rem; }
h2 { font-size: 1.45rem; margin: 2.2rem 0 .6rem; color: var(--brand-deep); }
h3 { font-size: 1.1rem; margin: 1.4rem 0 .4rem; }
p, li { color: var(--ink); }
a { color: var(--brand); }
a:hover { color: var(--brand-deep); }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; border-radius: 2px; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--brand); color: #fff; padding: .5rem 1rem; border-radius: 0 0 6px 0; z-index: 10; }
.skip:focus { left: 0; }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 1.25rem; }

/* Header */
header.site {
  border-bottom: 3px solid var(--brand);
  background: var(--bg-card);
}
header.site .wrap {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem 1.5rem;
  padding-top: 1.1rem; padding-bottom: 1.1rem;
}
.brand { font-size: 1.25rem; font-weight: 700; color: var(--ink); text-decoration: none; }
.brand small { display: block; font-family: "Inter", sans-serif; font-size: .78rem; font-weight: 500; color: var(--ink-soft); letter-spacing: .04em; }
nav.main { margin-left: auto; display: flex; gap: 1.1rem; }
nav.main a { text-decoration: none; font-size: .95rem; font-weight: 500; color: var(--ink-soft); padding: .2rem 0; border-bottom: 2px solid transparent; }
nav.main a:hover, nav.main a[aria-current="page"] { color: var(--brand); border-bottom-color: var(--accent); }

/* Hero */
.hero { padding: 2.6rem 0 1.4rem; }
.hero .kicker { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 600; color: var(--accent-text); margin: 0 0 .6rem; }
.hero .lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 46em; }

/* Badges */
.badge { display: inline-block; font-size: .74rem; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; border-radius: 999px; padding: .18rem .7rem; vertical-align: middle; }
.badge.live { background: var(--badge-live-bg); color: var(--badge-live-ink); }
.badge.progress { background: var(--badge-prog-bg); color: var(--badge-prog-ink); }
.badge.dev { background: var(--badge-dev-bg); color: var(--badge-dev-ink); }

/* Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; margin: 1.4rem 0 2rem; padding: 0; list-style: none; }
.card { background: var(--bg-card); border: 1px solid var(--line); border-radius: 10px; padding: 1.1rem 1.2rem; display: flex; flex-direction: column; gap: .45rem; }
.card h3 { margin: 0; font-size: 1.05rem; }
.card h3 a { text-decoration: none; color: var(--brand-deep); }
.card h3 a:hover { text-decoration: underline; }
.card p { margin: 0; font-size: .92rem; color: var(--ink-soft); }
.card .badge { align-self: flex-start; }

/* Fact panel */
.facts { background: var(--bg-card); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 8px; padding: 1rem 1.3rem; margin: 1.5rem 0; }
.facts dt { font-weight: 600; margin-top: .6rem; }
.facts dt:first-child { margin-top: 0; }
.facts dd { margin: 0 0 .2rem; color: var(--ink-soft); }

/* PI block */
.pi { display: flex; flex-wrap: wrap; gap: .3rem 2rem; align-items: baseline; background: var(--bg-card); border: 1px solid var(--line); border-radius: 10px; padding: 1.2rem 1.4rem; margin: 1.6rem 0; }
.pi .name { font-family: "Source Serif 4", Georgia, serif; font-size: 1.3rem; font-weight: 700; }
.pi .role { color: var(--ink-soft); font-size: .95rem; }

main { padding-bottom: 3rem; }
main .wrap > ul { padding-left: 1.2rem; }
li { margin: .3rem 0; }

/* Footer */
footer.site { border-top: 1px solid var(--line); background: var(--bg-card); font-size: .88rem; color: var(--ink-soft); }
footer.site .wrap { padding-top: 1.6rem; padding-bottom: 2rem; }
footer.site .foot-h { font-family: "Inter", sans-serif; margin: 0 0 .4rem; font-size: .95rem; font-weight: 600; color: var(--ink); }
footer.site ul { list-style: none; margin: 0 0 1rem; padding: 0; }
footer.site .cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem 2rem; }
footer.site .fine { margin-top: 1rem; font-size: .8rem; }

@media (max-width: 640px) {
  h1 { font-size: 1.6rem; }
  nav.main { margin-left: 0; flex-wrap: wrap; }
}