/* ============================================================
   MSU Speech Perception-Production Lab — shared stylesheet
   ============================================================ */
:root{
  --green:#18453B;          /* MSU primary green */
  --green-700:#123830;
  --green-600:#1e5247;
  --green-300:#5e8c80;
  --green-tint:#eef3f1;
  --green-tint-2:#e2ece8;
  --gold:#c8a85a;           /* warm secondary accent */
  --ink:#1d2522;
  --ink-soft:#465049;
  --line:#dde5e2;
  --paper:#ffffff;
  --bg:#f4f7f5;
  --sidebar-w:264px;
  --shadow-sm:0 1px 2px rgba(18,56,48,.06), 0 1px 1px rgba(18,56,48,.04);
  --shadow-md:0 10px 30px -12px rgba(18,56,48,.28);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Public Sans", system-ui, -apple-system, Segoe UI, Helvetica, Arial, sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--green-600);}
img{max-width:100%;display:block;}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--green);color:#fff;
  padding:10px 16px;z-index:100;border-radius:0 0 8px 0;
}
.skip-link:focus{left:0;}

/* ---------- Institutional top bar ---------- */
.topbar{
  background:var(--green);
  color:#eaf2ef;
  border-bottom:3px solid var(--gold);
}
.topbar-inner{
  max-width:1180px;margin:0 auto;padding:10px 28px;
  display:flex;align-items:center;gap:14px;
  font-size:13px;letter-spacing:.02em;
}
.topbar-inner .wm{font-weight:700;letter-spacing:.06em;text-transform:uppercase;}
.topbar-inner .sep{opacity:.45;}
.topbar-inner .college{opacity:.85;}
.topbar a{color:#eaf2ef;text-decoration:none;}
.topbar a:hover{color:#fff;text-decoration:underline;}

/* ---------- Shell ---------- */
.shell{
  max-width:1180px;margin:0 auto;padding:28px;
  display:grid;grid-template-columns:var(--sidebar-w) 1fr;gap:28px;
  align-items:start;
}

/* ---------- Mobile nav toggle (hidden on desktop) ---------- */
.navbar{display:none;}

/* ---------- Sidebar ---------- */
.sidebar{
  position:sticky;top:28px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.sidebar-brand{
  background:linear-gradient(160deg,var(--green) 0%, var(--green-700) 100%);
  color:#fff;padding:22px 22px 20px;
  position:relative;
  text-decoration:none;display:block;
}
.sidebar-brand .eyebrow{
  font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--gold);font-weight:700;margin:0 0 6px;
}
.sidebar-brand h2{
  font-family:"Source Serif 4", Georgia, serif;
  font-size:21px;line-height:1.18;margin:0;font-weight:600;letter-spacing:-.01em;color:#fff;
}
.sidebar-brand .wave{display:block;margin-top:14px;color:var(--gold);opacity:.9;}

.sidebar nav ul{list-style:none;margin:0;padding:8px;}
.sidebar nav li{margin:0;}
.sidebar nav a{
  display:block;width:100%;
  padding:11px 14px 11px 16px;
  color:var(--ink-soft);
  text-decoration:none;
  font-size:14.5px;font-weight:500;
  border-radius:9px;
  border-left:3px solid transparent;
  transition:background .15s ease, color .15s ease, border-color .15s ease, padding .15s ease;
}
.sidebar nav a:hover,
.sidebar nav a:focus-visible{
  background:var(--green-tint);
  color:var(--green);
  border-left-color:var(--gold);
  padding-left:20px;
  outline:none;
}
.sidebar nav a[aria-current="page"]{
  background:var(--green);
  color:#fff;
  border-left-color:var(--gold);
  font-weight:600;
}

/* ---------- Main content ---------- */
.main{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-sm);
  padding:36px 40px 44px;
  min-width:0;
}

/* Page heading + on-theme waveform rule (replaces legacy bar.gif) */
.page-head{margin:0 0 26px;}
.page-head h1{
  font-family:"Source Serif 4", Georgia, serif;
  font-size:clamp(26px,3.2vw,36px);
  line-height:1.14;letter-spacing:-.02em;color:var(--green);
  margin:0;font-weight:700;text-wrap:balance;
}
.wave-rule{display:block;color:var(--gold);margin:12px 0 0;height:16px;}
.wave-rule svg{height:16px;width:220px;max-width:100%;display:block;}

/* ---------- Home hero ---------- */
.brain-figure{
  margin:0 0 28px;padding:14px 12px 24px;border-bottom:1px solid var(--line);
}
.lab-logo{display:block;width:100%;max-width:540px;height:auto;margin:0 auto;}

.lede{font-size:17.5px;line-height:1.7;color:var(--ink);margin:0;}
.lede .lab-name{font-weight:700;color:var(--green);}
.lede.dropcap::first-letter{
  font-family:"Source Serif 4", Georgia, serif;
  font-size:3.4em;line-height:.82;font-weight:700;float:left;
  color:var(--green);margin:6px 12px 0 0;
}

.pi-callout{
  margin-top:30px;border-top:1px solid var(--line);padding-top:20px;
  display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;
  font-size:14.5px;color:var(--ink-soft);
}
.pi-callout .role{
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  font-weight:700;color:var(--green-600);
}
.pi-callout .name{
  font-family:"Source Serif 4", Georgia, serif;
  font-weight:600;color:var(--ink);font-size:16px;
}

/* ---------- Prose (Research etc.) ---------- */
.prose{max-width:68ch;}
.prose p{margin:0 0 18px;font-size:16.5px;}
.prose p:last-child{margin-bottom:0;}
.prose strong{color:var(--green);font-weight:700;}
.prose a{font-weight:600;}

/* ---------- Publications ---------- */
.ital{font-style:italic;}
.pub-intro{color:var(--ink-soft);font-size:15px;margin:0 0 22px;max-width:64ch;}
.pub-list{list-style:none;margin:0;padding:0;counter-reset:pub;}
.pub-list li{
  position:relative;
  padding:14px 0 14px 30px;
  border-top:1px solid var(--line);
  font-size:15px;line-height:1.62;color:var(--ink);
  max-width:74ch;
}
.pub-list li:first-child{border-top:0;}
.pub-list li::before{
  content:"";position:absolute;left:0;top:21px;
  width:9px;height:9px;border-radius:50%;
  background:var(--gold);
}
.pub-list a{color:var(--green-600);word-break:break-word;}
.pub-actions{
  margin-top:26px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;gap:18px;flex-wrap:wrap;
}
.pub-actions a{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:600;font-size:14.5px;color:var(--green);text-decoration:none;
  padding:8px 14px;border:1px solid var(--line);border-radius:9px;
  background:var(--green-tint);transition:background .15s ease, border-color .15s ease;
}
.pub-actions a:hover{background:var(--green-tint-2);border-color:var(--green-300);}

/* ---------- Members & Alumni ---------- */
.member-group{margin:0 0 8px;}
.member-group h2{
  font-family:"Source Serif 4", Georgia, serif;
  font-size:18px;color:var(--green);margin:28px 0 12px;font-weight:600;
  padding-bottom:8px;border-bottom:1px solid var(--line);
}
.pi-card{
  display:flex;gap:22px;align-items:center;flex-wrap:wrap;
  background:var(--green-tint);border:1px solid var(--line);border-radius:12px;
  padding:18px 20px;margin:6px 0 4px;
}
.pi-photo{
  width:104px;height:104px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(160deg,var(--green) 0%,var(--green-700) 100%);
  color:var(--gold);display:flex;align-items:center;justify-content:center;
  font-family:"Source Serif 4",Georgia,serif;font-size:34px;font-weight:600;
  border:2px solid var(--gold);overflow:hidden;
}
.pi-photo img{width:100%;height:100%;object-fit:cover;}
.pi-meta .pi-name{
  font-family:"Source Serif 4",Georgia,serif;font-size:20px;font-weight:600;
  color:var(--ink);text-decoration:none;display:inline-block;
}
.pi-meta .pi-name:hover{color:var(--green);text-decoration:underline;}
.pi-meta a.pi-link{display:inline-block;margin-top:8px;font-weight:600;font-size:14.5px;}
.member-list{
  list-style:none;margin:0;padding:0;
  columns:2;column-gap:36px;
}
.member-list li{
  break-inside:avoid;padding:6px 0 6px 18px;position:relative;font-size:15px;
}
.member-list li::before{
  content:"";position:absolute;left:0;top:13px;width:6px;height:6px;border-radius:50%;
  background:var(--green-300);
}

/* ---------- Contact ---------- */
.contact-grid{display:flex;gap:40px;flex-wrap:wrap;}
.contact-block{min-width:240px;}
.contact-block h2{
  font-family:"Source Serif 4",Georgia,serif;font-size:18px;color:var(--green);
  margin:0 0 12px;font-weight:600;
}
.contact-block ul{list-style:none;margin:0;padding:0;}
.contact-block li{padding:3px 0;font-size:15.5px;color:var(--ink-soft);}
.contact-block li.strong{color:var(--ink);font-weight:600;}
.contact-block a{font-weight:600;}

/* ---------- Placeholder pages ---------- */
.placeholder{
  border:2px dashed var(--green-300);border-radius:14px;
  background:radial-gradient(120% 140% at 50% 0%, var(--green-tint) 0%, var(--paper) 70%);
  padding:48px 28px;text-align:center;color:var(--ink-soft);
}
.placeholder svg{color:var(--green);opacity:.85;margin-bottom:14px;}
.placeholder h2{
  font-family:"Source Serif 4",Georgia,serif;color:var(--green);
  font-size:22px;margin:0 0 8px;font-weight:600;
}
.placeholder p{margin:0 auto;max-width:46ch;font-size:15.5px;}

/* ---------- Collaborators ---------- */
.collab-intro{color:var(--ink-soft);font-size:15px;margin:0 0 22px;max-width:64ch;}
.collab-list{list-style:none;margin:0;padding:0;columns:2;column-gap:40px;}
.collab-list li{
  break-inside:avoid;padding:10px 0;border-top:1px solid var(--line);
}
.collab-list li:first-child{border-top:0;}
.collab-list .c-name{font-weight:600;color:var(--green-600);text-decoration:none;font-size:15px;}
.collab-list .c-name:hover{text-decoration:underline;color:var(--green);}
.collab-list .c-aff{display:block;font-size:13.5px;color:var(--ink-soft);margin-top:2px;}

/* ---------- Lab Facilities ---------- */
.facility{margin:0 0 34px;}
.facility:last-child{margin-bottom:0;}
.facility-media{
  position:relative;width:100%;max-width:620px;aspect-ratio:3/2;
  border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--green-tint);
}
.facility-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;}
.facility-media .facility-ph-label{display:none;}
.facility-media.no-img{
  border:2px dashed var(--green-300);
  background:radial-gradient(120% 140% at 50% 0%, var(--green-tint) 0%, var(--paper) 70%);
}
.facility-media.no-img img{display:none;}
.facility-media.no-img .facility-ph-label{
  display:flex;position:absolute;inset:0;align-items:center;justify-content:center;
  color:var(--green);font-weight:600;font-size:15px;gap:9px;text-align:center;padding:0 16px;
}
.facility-media.no-img .facility-ph-label svg{flex:0 0 auto;opacity:.8;}
.facility figcaption{
  margin-top:14px;max-width:620px;font-size:15.5px;color:var(--ink-soft);line-height:1.62;
}
.facility figcaption strong{color:var(--green);font-weight:700;}

/* ---------- Lab News ---------- */
.news-item{
  border:1px solid var(--line);border-radius:12px;padding:20px 24px;
  background:var(--paper);max-width:72ch;box-shadow:var(--shadow-sm);
}
.news-item p{margin:0;font-size:16.5px;line-height:1.68;}
.news-item strong{color:var(--green);}
.news-item a{font-weight:600;}

/* ---------- Footer ---------- */
.site-footer{
  border-top:3px solid var(--gold);background:var(--green);color:#cfdcd7;margin-top:10px;
}
.site-footer .inner{
  max-width:1180px;margin:0 auto;padding:20px 28px;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;
}
.site-footer a{color:#eaf2ef;}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .shell{grid-template-columns:1fr;padding:18px;gap:18px;}
  .navbar{
    display:flex;align-items:center;justify-content:space-between;
    background:var(--paper);border:1px solid var(--line);border-radius:12px;
    padding:12px 16px;box-shadow:var(--shadow-sm);
  }
  .navbar .nb-title{
    font-family:"Source Serif 4",Georgia,serif;font-weight:600;color:var(--green);font-size:16px;
    text-decoration:none;
  }
  .nav-toggle{
    appearance:none;border:1px solid var(--line);background:var(--green-tint);
    color:var(--green);border-radius:9px;padding:9px 12px;font:inherit;font-weight:600;
    font-size:14px;cursor:pointer;display:flex;align-items:center;gap:8px;
  }
  .nav-toggle:hover{background:var(--green-tint-2);}
  .nav-toggle .bars{display:inline-block;width:16px;height:12px;position:relative;}
  .nav-toggle .bars::before,
  .nav-toggle .bars::after,
  .nav-toggle .bars span{
    content:"";position:absolute;left:0;right:0;height:2px;background:var(--green);border-radius:2px;
  }
  .nav-toggle .bars::before{top:0;}
  .nav-toggle .bars span{top:5px;}
  .nav-toggle .bars::after{bottom:0;}

  .sidebar{position:static;top:auto;display:none;}
  .sidebar.open{display:block;}
  .main{padding:26px 22px 32px;}
  .member-list{columns:1;}
}

@media (min-width:861px){
  .navbar{display:none !important;}
  .sidebar{display:block !important;}
}

@media (max-width:520px){
  .topbar-inner{flex-wrap:wrap;gap:6px 12px;font-size:12px;padding:9px 18px;}
  .topbar-inner .sep{display:none;}
  .contact-grid{gap:24px;}
}

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