/* Navarini Lab — scaffold styles. Self-contained, no external assets.
   Palette: near-black ink, warm paper, a single accent that shifts hue per
   strand (AI / biomed / clinical). Light + dark aware. */

:root {
  --ink: #16181d;
  --ink-soft: #4a4f5a;
  --paper: #fbfaf7;
  --paper-2: #f2f0ea;
  --line: #e2ded5;
  --card: #ffffff;
  --accent: #0e7c86;      /* AI teal (default) */
  --radius: 14px;
  --maxw: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #edeef1;
    --ink-soft: #a3a9b5;
    --paper: #0f1114;
    --paper-2: #171a1f;
    --line: #2a2e36;
    --card: #191c22;
    --accent: #38b6c2;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  padding: .85rem clamp(1rem, 4vw, 2.5rem);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.wordmark {
  font-weight: 700; font-size: 1.15rem; letter-spacing: -.02em;
  color: var(--ink);
}
.wordmark span { color: var(--accent); }
.site-header nav { display: flex; gap: clamp(.7rem, 2vw, 1.4rem); flex-wrap: wrap; }
.site-header nav a { color: var(--ink-soft); font-size: .95rem; font-weight: 500; }
.site-header nav a:hover { color: var(--accent); text-decoration: none; }

/* ---------- layout ---------- */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2.5rem); }
section { padding: clamp(3rem, 7vw, 5.5rem) 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: 0; }

h1, h2, h3 { letter-spacing: -.02em; line-height: 1.15; }
h2 { margin-top: 0; }

/* ---------- hero ---------- */
.hero { padding-top: clamp(3rem, 8vw, 6rem); border-bottom: 1px solid var(--line); }
.eyebrow {
  text-transform: uppercase; letter-spacing: .12em; font-size: .78rem;
  font-weight: 600; color: var(--accent); margin: 0 0 1rem;
}
.hero h1 { font-size: clamp(2rem, 6vw, 3.6rem); margin: 0 0 1.2rem; font-weight: 700; }
.hero h1 em { font-style: normal; color: var(--accent); }
.lede { font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--ink-soft); max-width: 60ch; margin: 0; }
.hero-hint { margin-top: 2rem; font-weight: 500; }

/* ---------- strand (AI / biomed / clinical) ---------- */
.strand-head { display: flex; align-items: baseline; gap: 1rem; margin-bottom: 1rem; }
.strand-index {
  font-size: clamp(1.4rem, 4vw, 2.2rem); font-weight: 700;
  color: var(--accent); opacity: .5; font-variant-numeric: tabular-nums;
}
.strand h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin: 0; }
.strand-sub { margin: .2rem 0 0; color: var(--ink-soft); font-size: .95rem; font-weight: 500; }
.strand-lede { max-width: 62ch; color: var(--ink-soft); font-size: 1.08rem; margin: 0 0 2rem; }

/* accent hue shifts per strand */
#biomed  { --accent: #7a5cc4; }   /* biology violet */
#clinical{ --accent: #c2543f; }   /* clinical coral */
@media (prefers-color-scheme: dark) {
  #biomed   { --accent: #a98ee6; }
  #clinical { --accent: #e07d68; }
}

/* ---------- cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.3rem 1.35rem; transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  box-shadow: 0 8px 26px -18px color-mix(in srgb, var(--accent) 70%, transparent);
}
.card header { display: flex; align-items: flex-start; justify-content: space-between; gap: .6rem; margin-bottom: .55rem; }
.card h3 { font-size: 1.06rem; margin: 0; }
.card p { margin: 0; color: var(--ink-soft); font-size: .96rem; }
.card em { color: var(--ink-soft); font-style: normal; opacity: .8; }

/* ---------- badges ---------- */
.badge {
  flex: none; font-size: .68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .05em; padding: .22rem .5rem; border-radius: 999px;
  white-space: nowrap; border: 1px solid transparent;
}
.badge-research { color: #0e7c86; background: #0e7c8618; }
.badge-data     { color: #2563c9; background: #2563c918; }
.badge-published{ color: #2e8b52; background: #2e8b5218; }
.badge-study,
.badge-registry { color: #b4791b; background: #b4791b18; }
.badge-lab      { color: #7a5cc4; background: #7a5cc418; }
.badge-clinical { color: #c2543f; background: #c2543f18; }
@media (prefers-color-scheme: dark) { .badge { filter: brightness(1.35); } }

/* ---------- team ---------- */
.team-lede { max-width: 60ch; color: var(--ink-soft); margin: .3rem 0 2rem; }
.member-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
.member {
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.1rem 1.2rem;
}
.member h3 { font-size: 1.02rem; margin: 0 0 .3rem; }
.member .role { margin: 0; font-size: .88rem; color: var(--ink-soft); }
.team-note { margin-top: 1rem; font-size: .9rem; color: var(--ink-soft); font-style: italic; }

.member-pi {
  background: var(--card);
  border-left: 3px solid var(--accent);
  margin-bottom: 2rem; max-width: 520px;
}
.member-pi h3 { font-size: 1.12rem; }
.team-group { margin-top: 2rem; }
.team-group-label {
  font-size: .82rem; text-transform: uppercase; letter-spacing: .08em;
  color: var(--ink); margin: 0 0 .9rem; font-weight: 700;
}
.team-group-label span { color: var(--ink-soft); font-weight: 500; letter-spacing: .04em; }
/* per-group accent to echo the strands */
.team-group:nth-of-type(2) { --accent: #38b6c2; }
.team-group:nth-of-type(3) { --accent: #7a5cc4; }
.team-group:nth-of-type(4) { --accent: #c2543f; }
.team-group-label { border-left: 3px solid var(--accent); padding-left: .6rem; }
.collab-label {
  font-size: .78rem; text-transform: uppercase; letter-spacing: .06em;
  color: var(--ink-soft); font-weight: 600; margin: 1.4rem 0 .8rem;
}
.member-collab { background: transparent; border-style: dashed; }

/* ---------- contact ---------- */
.contact-addr { color: var(--ink-soft); margin: 0 0 1.4rem; }
.links { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; }
.links a { font-weight: 500; }

/* ---------- footer ---------- */
.site-footer {
  max-width: var(--maxw); margin: 0 auto;
  padding: 2rem clamp(1rem, 4vw, 2.5rem);
  color: var(--ink-soft); font-size: .88rem;
}