/* Culmen Impact Lab -- shared site styles */

:root{
  --teal-900:#0B4F44;
  --teal-700:#0F6B5C;
  --teal-600:#128070;
  --teal-500:#1C8A76;
  --teal-100:#E4F1EE;
  --charcoal:#1B2B27;
  --gold-500:#C9962E;
  --gold-400:#DDAE4C;
  --cream:#FBF8F2;
  --paper:#FFFFFF;
  --ink:#182420;
  --ink-soft:#485952;
  --line:#E2DECF;
  --line-soft:#EDEAE0;

  --head:"IBM Plex Serif", Georgia, serif;
  --body:"Inter", -apple-system, "Segoe UI", sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, monospace;
  --maxw:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit;}
h1,h2,h3,h4{
  font-family:var(--head);
  font-weight:700;
  letter-spacing:-0.015em;
  margin:0 0 0.45em 0;
  color:var(--charcoal);
}
p{margin:0 0 1em 0; max-width:64ch;}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 28px;}
section{padding:96px 0;}
@media (max-width:720px){ section{padding:60px 0;} }
:focus-visible{ outline:2px solid var(--gold-500); outline-offset:3px; }

.kicker{
  font-family:var(--mono); font-weight:500; font-size:0.78rem;
  letter-spacing:0.08em; text-transform:uppercase; color:var(--teal-700);
  display:block; margin-bottom:14px;
}
.lede{ color:var(--ink-soft); font-size:1.08rem; max-width:60ch; }

/* ---------- Concept diagrams (illustrative graphics beside section headings) ---------- */
.concept-row{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:48px; align-items:center; }
.concept-row.reverse{ grid-template-columns:0.9fr 1.1fr; }
.concept-row.reverse .concept-graphic{ order:2; }
@media (max-width:880px){
  .concept-row, .concept-row.reverse{ grid-template-columns:1fr; }
  .concept-row.reverse .concept-graphic{ order:0; }
}
.concept-graphic{ display:flex; align-items:center; justify-content:center; padding:12px; }
.concept-graphic svg{ width:100%; height:auto; max-width:420px; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-block; padding:13px 24px; border-radius:2px;
  text-decoration:none; font-family:var(--head); font-weight:600; font-size:0.92rem;
  border:1px solid transparent; transition:background .15s, color .15s, border-color .15s, transform .15s;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:var(--gold-500); color:var(--charcoal); }
.btn-primary:hover{ background:var(--gold-400); }
.btn-outline{ border-color:var(--charcoal); color:var(--charcoal); }
.btn-outline:hover{ background:var(--charcoal); color:#fff; }
.btn-outline-light{ border-color:rgba(255,255,255,0.55); color:#fff; }
.btn-outline-light:hover{ border-color:#fff; background:rgba(255,255,255,0.12); }

/* ---------- Ascent glyph (brand motif: 3 ascending bars) ---------- */
.ascent-glyph{ display:inline-flex; align-items:flex-end; gap:3px; height:16px; }
.ascent-glyph span{ display:block; width:4px; background:var(--gold-500); }
.ascent-glyph span:nth-child(1){ height:7px; }
.ascent-glyph span:nth-child(2){ height:11px; }
.ascent-glyph span:nth-child(3){ height:16px; }

/* ---------- Header / Nav ---------- */
header.site{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,0.96);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  padding:8px 28px; max-width:var(--maxw); margin:0 auto;
}
.brand{ display:flex; align-items:center; text-decoration:none; }
.brand img{ height:54px; width:auto; }
nav.primary{ display:flex; align-items:center; gap:24px; }
nav.primary a{
  text-decoration:none; color:var(--ink-soft); font-size:0.9rem; font-family:var(--head); font-weight:600;
  padding:6px 1px; border-bottom:2px solid transparent; transition:border-color .15s, color .15s;
}
nav.primary a:hover, nav.primary a.active{ color:var(--charcoal); border-color:var(--gold-500); }
.nav-cta{
  background:var(--teal-700); color:#fff !important; padding:9px 18px; border-radius:2px;
  border-bottom:none !important;
}
.nav-cta:hover{ background:var(--charcoal) !important; }
.menu-toggle{ display:none; background:none; border:none; cursor:pointer; padding:8px; }
.menu-toggle span{ display:block; width:22px; height:2px; background:var(--charcoal); margin:5px 0; }

@media (max-width:960px){
  nav.primary{
    position:absolute; top:100%; left:0; right:0; background:var(--paper);
    flex-direction:column; align-items:stretch; gap:0; border-bottom:1px solid var(--line);
    max-height:0; overflow:hidden; transition:max-height .25s ease;
  }
  nav.primary.open{ max-height:520px; }
  nav.primary a{ padding:14px 28px; border-bottom:1px solid var(--line); border-left:3px solid transparent; }
  nav.primary a:hover, nav.primary a.active{ border-color:transparent; border-left-color:var(--gold-500); }
  .nav-cta{ text-align:center; }
  .menu-toggle{ display:block; }
}

/* ---------- Hero (solid, for pages without a photo) ---------- */
.hero{
  position:relative; overflow:hidden;
  background:linear-gradient(150deg, var(--teal-900) 0%, var(--teal-700) 55%, var(--teal-600) 100%);
  color:#fff;
  clip-path:polygon(0 0, 100% 0, 100% 92%, 0 100%);
}
.hero-inner{
  max-width:var(--maxw); margin:0 auto; padding:104px 28px 128px;
  display:grid; grid-template-columns:1.15fr 0.85fr; gap:40px; align-items:center; position:relative; z-index:2;
}
@media (max-width:880px){ .hero-inner{ grid-template-columns:1fr; padding:76px 24px 96px; } }
.hero h1{ color:#fff; font-size:clamp(2.1rem, 4.6vw, 3.3rem); line-height:1.1; max-width:16ch; }
.hero .lede{ color:rgba(255,255,255,0.88); }
.hero-actions{ display:flex; gap:14px; margin-top:32px; flex-wrap:wrap; }
.hero-eyebrow{ font-family:var(--mono); font-weight:500; font-size:0.8rem; letter-spacing:0.08em; text-transform:uppercase; color:var(--gold-400); margin-bottom:20px; display:block;}

.ascent-art{ position:relative; height:100%; min-height:260px; }
.ascent-art svg{ position:absolute; top:0; right:0; bottom:0; left:0; width:100%; height:100%; }

/* ---------- Photo hero (Home, Our Work) ---------- */
.photo-hero{
  position:relative; overflow:hidden; color:#fff;
  clip-path:polygon(0 0, 100% 0, 100% 92%, 0 100%);
}
.photo-hero .bg{
  position:absolute; top:0; right:0; bottom:0; left:0; background-size:cover; background-position:center;
}
.photo-hero .overlay{
  position:absolute; top:0; right:0; bottom:0; left:0;
  background:linear-gradient(115deg, rgba(11,79,68,0.94) 0%, rgba(11,79,68,0.82) 45%, rgba(11,79,68,0.55) 100%);
}
.photo-hero .hero-inner{ padding:104px 28px 132px; position:relative; z-index:2; }
.photo-hero h1{ color:#fff; font-size:clamp(2.1rem, 4.6vw, 3.3rem); line-height:1.1; }
.photo-hero .lede{ color:rgba(255,255,255,0.9); }

.page-hero{
  background:linear-gradient(150deg, var(--teal-900) 0%, var(--teal-700) 100%);
  color:#fff; padding:84px 0 100px;
  clip-path:polygon(0 0, 100% 0, 100% 90%, 0 100%);
}
.page-hero .wrap{ max-width:900px; }
.page-hero h1{ color:#fff; font-size:clamp(1.9rem, 3.8vw, 2.7rem); max-width:22ch; }
.page-hero .lede{ color:rgba(255,255,255,0.88); max-width:60ch; }

/* ---------- Cards / rows / grids ---------- */
.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:40px; }
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.grid-4{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
@media (max-width:880px){ .grid-2, .grid-3, .grid-4{ grid-template-columns:1fr; } }

.pillar-list{ border-top:1px solid var(--line); margin-top:32px; }
.pillar-row{
  display:grid; grid-template-columns:56px 1fr 220px; gap:26px; align-items:center;
  padding:32px 0; border-bottom:1px solid var(--line);
}
@media (max-width:900px){ .pillar-row{ grid-template-columns:56px 1fr; } .pillar-row .pillar-graphic{ display:none; } }
@media (max-width:640px){ .pillar-row{ grid-template-columns:1fr; gap:8px; } }
.pillar-graphic{ display:flex; align-items:center; justify-content:center; }
.pillar-graphic svg{ width:100%; max-width:180px; height:auto; }
.pillar-num{ font-family:var(--mono); font-weight:600; color:var(--gold-500); font-size:1.05rem; }
.pillar-row h3{ font-size:1.22rem; color:var(--teal-900); }
.pillar-row p{ color:var(--ink-soft); font-size:0.97rem; margin-bottom:0.5em; }
.pillar-row ul{ margin:10px 0 0; padding-left:1.1em; color:var(--ink-soft); font-size:0.94rem; }
.pillar-row li{ margin-bottom:4px; }

.card{
  background:var(--paper); border:1px solid var(--line); border-radius:3px; padding:30px;
  transition:box-shadow .18s, transform .18s, border-color .18s;
}
.card:hover{ box-shadow:0 14px 32px -18px rgba(11,79,68,0.35); transform:translateY(-2px); border-color:var(--teal-500); }
.card h3{ font-size:1.1rem; color:var(--teal-900); }
.card p{ color:var(--ink-soft); font-size:0.95rem; margin-bottom:0; }

.stat{ text-align:left; }
.stat .n{ font-family:var(--mono); font-weight:600; font-size:2.3rem; color:var(--teal-700); display:block; }
.stat .l{ color:var(--ink-soft); font-size:0.88rem; }

/* ---------- Section variants ---------- */
.section-tint{ background:var(--teal-100); }
.section-cream{ background:var(--cream); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section-dark{ background:var(--charcoal); color:#fff; }
.section-dark h2, .section-dark h3{ color:#fff; }
.section-dark .kicker{ color:var(--gold-400); }
.section-dark p{ color:rgba(255,255,255,0.78); }

/* ---------- Timeline ---------- */
.timeline{ margin-top:32px; }
.t-item{
  display:grid; grid-template-columns:110px 1fr; gap:24px; padding:24px 0;
  border-top:1px solid var(--line);
}
.t-item:last-child{ border-bottom:1px solid var(--line); }
.t-year{ font-family:var(--mono); font-weight:600; color:var(--teal-700); }
.t-item h3{ font-size:1.04rem; margin-bottom:3px; color:var(--teal-900); }
.t-item p{ color:var(--ink-soft); font-size:0.94rem; margin:0; }
@media (max-width:600px){ .t-item{ grid-template-columns:1fr; gap:4px; } }

/* ---------- Field engagement cards ---------- */
.engagement{
  display:grid; grid-template-columns:1fr 1.15fr; gap:0; margin-top:36px;
  border:1px solid var(--line); border-radius:4px; overflow:hidden; background:var(--paper);
}
.engagement:not(:last-child){ margin-bottom:28px; }
.engagement .photo{ background-size:cover; background-position:center; min-height:260px; }
.engagement .body{ padding:34px 36px; }
.engagement .tag{ font-family:var(--mono); font-size:0.74rem; letter-spacing:0.06em; text-transform:uppercase; color:var(--teal-700); }
.engagement h3{ font-size:1.22rem; margin:8px 0 12px; color:var(--teal-900); }
.engagement p{ color:var(--ink-soft); font-size:0.95rem; }
.engagement ul{ margin:12px 0 0; padding-left:1.15em; color:var(--ink-soft); font-size:0.92rem; }
.engagement li{ margin-bottom:6px; }
@media (max-width:800px){
  .engagement{ grid-template-columns:1fr; }
  .engagement .photo{ min-height:200px; }
}
.engagement.reverse{ grid-template-columns:1.15fr 1fr; }
.engagement.reverse .photo{ order:2; }
@media (max-width:800px){ .engagement.reverse .photo{ order:0; } }

/* ---------- Photo gallery ---------- */
.gallery{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-top:30px; }
@media (max-width:760px){ .gallery{ grid-template-columns:1fr 1fr; } }
@media (max-width:480px){ .gallery{ grid-template-columns:1fr; } }
.gallery figure{ margin:0; overflow:hidden; border-radius:3px; background:var(--line-soft); }
.gallery img{ width:100%; height:220px; object-fit:cover; transition:transform .35s; }
.gallery a:hover img{ transform:scale(1.05); }
.gallery figcaption{ font-size:0.8rem; color:var(--ink-soft); padding:8px 2px 0; }

/* ---------- Publications ---------- */
.pub-list{ list-style:none; margin:28px 0 0; padding:0; }
.pub-item{
  padding:22px 0; border-top:1px solid var(--line); display:grid; grid-template-columns:90px 1fr; gap:22px;
}
.pub-item:last-child{ border-bottom:1px solid var(--line); }
.pub-year{ font-family:var(--mono); font-weight:600; color:var(--gold-500); }
.pub-item h3{ font-size:1.03rem; margin-bottom:4px; color:var(--teal-900); }
.pub-item .journal{ font-size:0.86rem; color:var(--ink-soft); font-style:italic; }
.pub-item a.doi{ font-size:0.85rem; color:var(--teal-700); text-decoration:none; border-bottom:1px solid var(--line); }
.pub-item a.doi:hover{ border-color:var(--teal-700); }
@media (max-width:600px){ .pub-item{ grid-template-columns:1fr; gap:4px; } }

/* ---------- Careers ---------- */
.job-list{ margin-top:32px; display:flex; flex-direction:column; gap:16px; }
.job-card{
  background:var(--paper); border:1px solid var(--line); border-radius:3px;
  padding:26px 28px; display:flex; justify-content:space-between; align-items:center; gap:20px; flex-wrap:wrap;
}
.job-card h3{ font-size:1.1rem; margin-bottom:4px; color:var(--teal-900); }
.job-card .meta{ font-size:0.82rem; color:var(--ink-soft); font-family:var(--mono); letter-spacing:0.03em; }
.job-card p{ color:var(--ink-soft); font-size:0.94rem; margin:8px 0 0; max-width:56ch; }
.job-empty{
  border:1px dashed var(--line); border-radius:3px; padding:32px; text-align:center; color:var(--ink-soft);
  margin-top:28px;
}

/* ---------- Contact ---------- */
.contact-list{ list-style:none; margin:24px 0 0; padding:0; }
.contact-list li{ padding:14px 0; border-bottom:1px solid rgba(255,255,255,0.16); font-size:0.96rem; }
.contact-list .k{ display:block; font-family:var(--mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.06em; color:var(--gold-400); margin-bottom:4px; }
.contact-list a{ text-decoration:none; color:#fff; border-bottom:1px solid rgba(255,255,255,0.3); }
.contact-list a:hover{ border-color:#fff; }

.field{ margin-bottom:16px; }
.field label{ display:block; font-family:var(--mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.06em; color:var(--gold-400); margin-bottom:6px; }
.field input, .field textarea{
  width:100%; background:rgba(255,255,255,0.07); border:1px solid rgba(255,255,255,0.3); color:#fff;
  padding:11px 12px; font-family:var(--body); font-size:0.95rem; border-radius:2px;
}
.field input::placeholder, .field textarea::placeholder{ color:rgba(255,255,255,0.42); }
.field textarea{ resize:vertical; min-height:110px; }
.cform button{ border:none; cursor:pointer; font-family:var(--head); }
.form-note{ font-size:0.8rem; color:rgba(255,255,255,0.55); margin-top:10px; }

/* ---------- Social icons ---------- */
.social-row{ display:flex; gap:12px; margin-top:22px; }
.social-row a{
  width:38px; height:38px; border-radius:50%; border:1px solid rgba(255,255,255,0.35);
  display:flex; align-items:center; justify-content:center; text-decoration:none; color:#fff;
  transition:background .15s, border-color .15s;
}
.social-row a:hover{ background:rgba(255,255,255,0.14); border-color:#fff; }
.social-row svg{ width:17px; height:17px; fill:currentColor; }

/* ---------- Footer ---------- */
footer.site{
  background:var(--charcoal); color:rgba(255,255,255,0.62); padding:46px 0 26px; font-size:0.85rem;
}
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:32px; padding-bottom:28px; border-bottom:1px solid rgba(255,255,255,0.12); }
@media (max-width:760px){ .footer-grid{ grid-template-columns:1fr; gap:26px; } }
.footer-grid h4{ color:#fff; font-family:var(--head); font-size:0.8rem; text-transform:uppercase; letter-spacing:0.06em; margin-bottom:14px; }
.footer-grid ul{ list-style:none; margin:0; padding:0; }
.footer-grid li{ margin-bottom:9px; }
.footer-grid a{ text-decoration:none; color:rgba(255,255,255,0.65); }
.footer-grid a:hover{ color:#fff; }
.footer-brand img{ height:44px; margin-bottom:14px; background:var(--cream); padding:8px 12px; border-radius:2px; }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px; padding-top:22px; font-family:var(--mono); font-size:0.78rem; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
}