/* McNeal Research Group — Spatial Thinking in Fluid-Earth Science */
:root{
  --ocean:#0b3d5c;
  --ocean-deep:#072a40;
  --sky:#2f7fae;
  --sky-light:#cfe6f2;
  --sand:#f4efe6;
  --ink:#1c2733;
  --muted:#5b6b78;
  --line:#dfe6ec;
  --white:#ffffff;
  --max:1080px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Source Sans 3","Segoe UI",Helvetica,Arial,sans-serif;
  color:var(--ink);
  line-height:1.65;
  background:var(--white);
  font-size:18px;
}
h1,h2,h3{font-family:"Source Serif 4",Georgia,"Times New Roman",serif;line-height:1.2;color:var(--ocean-deep);}
a{color:var(--sky);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;height:auto;}

/* Header / hero */
.site-header{
  position:relative;
  background:linear-gradient(180deg,rgba(7,42,64,.55),rgba(7,42,64,.55)),
    url("images/cropped-cropped-Sea-and-Sky-d1e296ee5d2b7846-5-1.jpg") center/cover no-repeat;
  color:var(--white);
  text-align:center;
  padding:54px 20px 40px;
}
.site-header .eyebrow{letter-spacing:.18em;text-transform:uppercase;font-size:.72rem;opacity:.9;margin:0 0 8px;}
.site-header h1{color:#fff;font-size:2.3rem;margin:0;}
.site-header .tagline{margin:10px 0 0;font-size:1.05rem;opacity:.95;}

/* Nav */
nav.main{
  background:var(--ocean-deep);
  position:sticky;top:0;z-index:50;
}
nav.main ul{
  list-style:none;margin:0;padding:0;
  max-width:var(--max);margin-inline:auto;
  display:flex;flex-wrap:wrap;justify-content:center;
}
nav.main a{
  display:block;color:#dbe7f0;padding:14px 18px;font-size:.95rem;font-weight:600;
  text-decoration:none;border-bottom:3px solid transparent;
}
nav.main a:hover,nav.main a.active{color:#fff;border-bottom-color:var(--sky);background:rgba(255,255,255,.05);}

/* Layout */
main{max-width:var(--max);margin:0 auto;padding:48px 22px 24px;}
.lead{font-size:1.18rem;color:var(--muted);max-width:62ch;}
section{margin-bottom:40px;}
h2{font-size:1.7rem;border-bottom:2px solid var(--line);padding-bottom:8px;margin-top:0;}
h3{font-size:1.25rem;}

/* Breadcrumb */
.crumb{font-size:.85rem;color:var(--muted);margin-bottom:6px;}
.crumb a{color:var(--sky);}

/* Cards grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;}
.card{
  border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--white);
  display:flex;flex-direction:column;transition:box-shadow .15s,transform .15s;
}
.card:hover{box-shadow:0 8px 24px rgba(11,61,92,.12);transform:translateY(-2px);}
.card .thumb{aspect-ratio:3/2;background:var(--sky-light) center/cover no-repeat;}
.card .body{padding:16px 18px;}
.card h3{margin:0 0 6px;font-size:1.1rem;}
.card p{margin:0;color:var(--muted);font-size:.95rem;}
.card a.stretched{position:absolute;}

/* People grid */
.people{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:26px;}
.person{text-align:center;}
.person img{width:150px;height:150px;border-radius:50%;object-fit:cover;border:4px solid var(--sky-light);}
.person .name{font-weight:700;margin:10px 0 2px;color:var(--ocean-deep);}
.person .role{font-size:.85rem;color:var(--muted);}
.person .aff{font-size:.8rem;color:var(--muted);font-style:italic;}

/* Publications */
.pub-list{list-style:none;padding:0;margin:0;}
.pub-list li{
  padding:16px 0;border-bottom:1px solid var(--line);
  display:flex;gap:14px;align-items:baseline;
}
.pub-list li::before{content:"▸";color:var(--sky);font-size:1.1rem;}

/* Callouts */
.note{
  background:var(--sand);border-left:4px solid var(--sky);
  padding:14px 18px;border-radius:0 8px 8px 0;font-size:.92rem;color:var(--muted);
}
.funders{display:flex;flex-wrap:wrap;gap:24px;align-items:center;margin-top:18px;}
.funders img{height:64px;width:auto;}

figure{margin:24px 0;}
figure img{border-radius:8px;border:1px solid var(--line);}
figcaption{font-size:.85rem;color:var(--muted);margin-top:6px;}

/* Buttons */
.btn{display:inline-block;background:var(--sky);color:#fff;padding:10px 20px;border-radius:6px;font-weight:600;}
.btn:hover{background:var(--ocean);text-decoration:none;}

/* Footer */
footer{
  background:var(--ocean-deep);color:#bcd2e0;margin-top:48px;
  padding:30px 22px;text-align:center;font-size:.85rem;
}
footer a{color:#9fd0ea;}

@media(max-width:600px){
  body{font-size:17px;}
  .site-header h1{font-size:1.6rem;}
  nav.main a{padding:11px 12px;font-size:.85rem;}
}