/* ============================================================
   Motivation Lab — visual identity v2
   Display: Fraunces (scholarly, warm authority)
   Body: Source Sans 3 (clean, highly legible)
   Utility: IBM Plex Mono (data / eyebrow labels)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Source+Sans+3:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500&display=swap');

:root{
  --ink:        #102544;
  --ink-soft:   #4C5C71;
  --blue:       #00274C;        /* Michigan Blue — authority */
  --blue-deep:  #041827;
  --blue-bright:#0E71C8;        /* brighter azure — energy */
  --maize:      #FFCB05;        /* Michigan Maize */
  --maize-deep: #E8A800;        /* maize hover / text-on-maize contrast helper */
  --maize-wash: #FFF3C4;
  --pulse:      #12A488;        /* vivid teal-green — optimism */
  --pulse-soft: #DFF6EF;
  --paper:      #FFFEFA;
  --paper-dim:  #F4F1E6;
  --line:       #E7E1CE;

  --display: 'Fraunces', Georgia, serif;
  --body: 'Source Sans 3', -apple-system, Segoe UI, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Menlo, monospace;

  --max: 1120px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--body);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; }
p{ color:var(--ink-soft); }

.wrap{ max-width:var(--max); margin:0 auto; padding:0 28px; }

/* -------------------- eyebrow / mono labels -------------------- */
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--pulse);
}
.tag{
  display:inline-block;
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--blue);
  background:var(--pulse-soft);
  border:1px solid var(--line);
  padding:3px 9px;
  border-radius:3px;
}
.tag.maize{ background:var(--maize-wash); color:#5A4200; border-color:#F0DE93; }

/* -------------------- header / nav -------------------- */
header.site{
  position:sticky; top:0; z-index:50;
  background:rgba(255,254,250,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 28px;
  max-width:var(--max); margin:0 auto;
}
.brand{
  font-family:var(--display);
  font-weight:600;
  font-size:20px;
  color:var(--blue);
  text-decoration:none;
  letter-spacing:.01em;
}
.brand span{ color:var(--pulse); }
.navlinks{
  display:flex; gap:26px; list-style:none; margin:0; padding:0;
  font-size:14.5px; font-weight:600;
  position:relative;
}
.navlinks > li{ position:relative; }
.navlinks a{
  text-decoration:none; color:var(--ink);
  padding:6px 2px; border-bottom:2px solid transparent;
  transition:border-color .15s ease, color .15s ease;
}
.navlinks a:hover, .navlinks a.active{
  border-bottom-color:var(--maize); color:var(--blue);
}
.navtoggle{ display:none; background:none; border:none; cursor:pointer; font-size:20px; }

.subnav{
  list-style:none; margin:0; padding:8px; position:absolute; top:100%; left:-10px;
  background:#fff; border:1px solid var(--line); border-radius:6px; min-width:190px;
  box-shadow:0 12px 30px rgba(16,37,68,.1);
  display:none; flex-direction:column; gap:2px;
}
.navlinks > li:hover .subnav{ display:flex; }
.subnav a{ display:block; padding:8px 10px; border-bottom:none; font-weight:500; border-radius:4px; }
.subnav a:hover{ background:var(--pulse-soft); border-bottom:none; }

@media (max-width:760px){
  .navlinks{
    position:fixed; inset:64px 0 auto 0; background:var(--paper);
    flex-direction:column; gap:0; border-bottom:1px solid var(--line);
    max-height:0; overflow:hidden; transition:max-height .25s ease;
  }
  .navlinks.open{ max-height:520px; overflow-y:auto; }
  .navlinks a{ display:block; padding:14px 28px; border-bottom:1px solid var(--line); }
  .navtoggle{ display:block; }
  .subnav{ position:static; display:flex !important; box-shadow:none; border:none; border-radius:0; background:var(--paper-dim); padding:0; }
  .subnav a{ padding:12px 40px; }
}

/* -------------------- hero equalizer (signature visual) -------------------- */
.hero{
  position:relative;
  padding:80px 0 0;
  background:
    radial-gradient(1000px 480px at 88% -12%, var(--maize-wash) 0%, transparent 55%),
    radial-gradient(900px 460px at -6% 30%, var(--pulse-soft) 0%, transparent 55%),
    var(--paper);
  overflow:hidden;
}
.hero h1{
  font-family:var(--display);
  font-weight:600;
  font-size:clamp(38px, 6vw, 62px);
  line-height:1.06;
  margin:18px 0 22px;
  color:var(--blue);
  max-width:14ch;
}
.hero .lede{
  font-size:19px;
  max-width:56ch;
  color:var(--ink-soft);
}

.hero-eq-band{
  margin-top:52px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(255,255,255,.5), rgba(255,255,255,.9));
}
.hero-eq{
  display:block; width:100%; height:150px; padding:22px 0 0;
}
#heroViz{ display:block; width:100%; height:100%; }
.hero-eq-caption{
  display:flex; justify-content:space-between; align-items:baseline;
  padding:10px 0 20px; font-family:var(--mono); font-size:11.5px;
  letter-spacing:.06em; text-transform:uppercase; color:var(--ink-soft);
  border-top:none;
}
@media (max-width:600px){
  .hero-eq{ height:100px; }
}

/* -------------------- signature wave — small section divider -------------------- */
.pulse-divider{
  width:100%; height:30px;
  padding:0 28px; max-width:var(--max); margin:0 auto;
}
.pulse-divider svg{ display:block; width:100%; height:100%; }

/* -------------------- buttons -------------------- */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--body); font-weight:700; font-size:14.5px;
  padding:12px 22px; border-radius:4px;
  text-decoration:none; border:1.5px solid var(--blue);
  color:var(--blue); background:transparent;
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.btn:hover{ background:var(--blue); color:#fff; }
.btn.primary{ background:var(--maize); color:#3A2C00; border-color:var(--maize); }
.btn.primary:hover{ background:var(--maize-deep); border-color:var(--maize-deep); color:#3A2C00; }

/* -------------------- sections -------------------- */
section{ padding:64px 0; }
.section-head{ max-width:60ch; margin-bottom:38px; }
.section-head h2{
  font-family:var(--display); font-weight:600;
  font-size:clamp(26px, 3.4vw, 36px);
  color:var(--blue); margin:8px 0 12px;
}
.band{ background:var(--blue); color:#fff; }
.band .eyebrow{ color:var(--maize); }
.band h2{ color:#fff; }
.band p{ color:#c7d3de; }

/* -------------------- cards / grids -------------------- */
.grid{ display:grid; gap:22px; }
.grid.cols-3{ grid-template-columns:repeat(3,1fr); }
.grid.cols-2{ grid-template-columns:repeat(2,1fr); }
@media (max-width:860px){
  .grid.cols-3, .grid.cols-2{ grid-template-columns:1fr; }
}

.card{
  background:#fff; border:1px solid var(--line); border-radius:6px;
  padding:26px; display:flex; flex-direction:column; gap:10px;
  transition:box-shadow .18s ease, transform .18s ease;
}
.card:hover{ box-shadow:0 14px 30px rgba(16,37,68,.08); transform:translateY(-2px); }
.card h3{
  font-family:var(--display); font-size:21px; margin:2px 0 0; color:var(--blue);
}
.card p + h3{ margin-top:22px; }
.card p{ margin:0; font-size:15px; }
.card .more{
  margin-top:auto; font-weight:700; font-size:14px; color:var(--pulse);
  text-decoration:none;
}

.person{
  display:grid; grid-template-columns:88px 1fr; gap:16px;
  padding:18px 0; border-top:1px solid var(--line);
}
.person img{ width:88px; height:110px; object-fit:cover; border-radius:4px; background:var(--paper-dim); }
.person h4{ margin:0 0 3px; font-family:var(--display); font-size:18px; color:var(--blue); }
.person .role{ font-size:13px; color:var(--pulse); font-weight:600; margin-bottom:6px; }
.person p{ font-size:14.5px; margin:0 0 6px; }
.person a.mail{ font-size:13px; font-family:var(--mono); color:var(--ink-soft); text-decoration:none; }

.group-label{
  font-family:var(--mono); font-size:12px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--blue); margin:44px 0 0; padding-top:26px; border-top:2px solid var(--maize);
}

/* -------------------- news list -------------------- */
.news-item{
  display:flex; justify-content:space-between; gap:24px;
  padding:20px 0; border-top:1px solid var(--line);
}
.news-item a{ text-decoration:none; font-weight:600; color:var(--ink); }
.news-item a:hover{ color:var(--pulse); }
.news-item time{ font-family:var(--mono); font-size:13px; color:var(--ink-soft); white-space:nowrap; }

/* -------------------- footer -------------------- */
footer{
  background:var(--blue-deep); color:#a9b7c4; padding:44px 0 30px; font-size:14px;
}
footer a{ color:#e3e9ee; text-decoration:none; }
footer a:hover{ text-decoration:underline; }
.foot-grid{ display:flex; flex-wrap:wrap; gap:40px; justify-content:space-between; }
.foot-meta{ margin-top:28px; padding-top:18px; border-top:1px solid #16324a; font-size:12.5px; color:#6f8298; }

/* -------------------- contact -------------------- */
.contact-block{
  background:#fff; border:1px solid var(--line); border-radius:6px; padding:32px;
}
.contact-block dt{ font-family:var(--mono); font-size:12px; text-transform:uppercase; letter-spacing:.08em; color:var(--pulse); margin-top:18px; }
.contact-block dt:first-child{ margin-top:0; }
.contact-block dd{ margin:4px 0 0; font-size:16px; }

/* -------------------- research subpages -------------------- */
.subpage-nav{
  display:flex; gap:10px; flex-wrap:wrap; margin-bottom:8px;
}
.subpage-nav a{
  font-family:var(--mono); font-size:12px; text-transform:uppercase; letter-spacing:.06em;
  padding:7px 12px; border-radius:20px; border:1px solid var(--line); text-decoration:none;
  color:var(--ink-soft);
}
.subpage-nav a.active{ background:var(--blue); border-color:var(--blue); color:#fff; }
.subpage-nav a:hover:not(.active){ border-color:var(--pulse); color:var(--pulse); }

.measure-block{
  background:#fff; border:1px solid var(--line); border-radius:6px; padding:30px; margin-bottom:24px;
}
.measure-block h3{ font-family:var(--display); color:var(--blue); margin-top:0; }
.measure-block ul{ padding-left:20px; color:var(--ink-soft); }
.measure-block li{ margin-bottom:6px; }