/* ===========================================================
   FSTTCS 2026 — shared stylesheet
   =========================================================== */
:root{
  --navy:#0d2a4d;
  --navy-deep:#081d38;
  --maroon:#7a1f2b;
  --ink:#1b2431;
  --muted:#4a5568;
  --line:#e3e7ee;
  --bg:#ffffff;
  --bg-soft:#f6f8fb;
  --serif:"Source Serif 4", Georgia, "Times New Roman", serif;
  --sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --maxw:1060px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--navy);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;display:block;}

/* ---------- Header ---------- */
.banner{
  width:100%;
  background:radial-gradient(120% 150% at 18% 0%, #17457c 0%, var(--navy) 45%, var(--navy-deep) 100%);
  display:flex;align-items:center;justify-content:center;
  padding:clamp(38px,7vw,70px) clamp(18px,5vw,56px);
}
.banner-caption{color:#fff;text-align:center;max-width:900px;}
.banner-caption .conf{
  font-family:var(--serif);font-weight:700;letter-spacing:.5px;
  font-size:clamp(2.1rem,6vw,3.4rem);line-height:1.03;margin:0;
}
.banner-caption .full{
  font-family:var(--serif);font-weight:500;
  font-size:clamp(.98rem,2.2vw,1.3rem);
  margin:.6rem auto 0;max-width:820px;line-height:1.35;color:#e9eef6;
}
.banner-caption .when{
  margin:.85rem 0 0;font-size:clamp(.85rem,1.9vw,1rem);
  font-weight:600;letter-spacing:.3px;color:#fff;
}

/* ---------- Navigation ---------- */
nav.mainnav{background:var(--navy);border-bottom:3px solid var(--maroon);position:sticky;top:0;z-index:20;}
nav.mainnav ul{list-style:none;margin:0 auto;padding:0;max-width:var(--maxw);display:flex;flex-wrap:wrap;justify-content:center;}
nav.mainnav a{
  display:block;color:#e8eef6;padding:14px 18px;font-size:.92rem;font-weight:500;letter-spacing:.2px;
  text-decoration:none;border-bottom:3px solid transparent;margin-bottom:-3px;
  transition:background .18s ease,color .18s ease;
}
nav.mainnav a:hover{background:rgba(255,255,255,.08);color:#fff;text-decoration:none;}
nav.mainnav a.active{color:#fff;border-bottom-color:#f2c14e;background:rgba(255,255,255,.06);}

/* ---------- Content ---------- */
main{max-width:var(--maxw);margin:0 auto;padding:clamp(28px,5vw,56px) clamp(18px,5vw,40px) 20px;}
h2.section{
  font-family:var(--serif);font-weight:700;font-size:clamp(1.6rem,4vw,2.1rem);color:var(--navy);
  margin:2.4rem 0 .5rem;padding-bottom:.35rem;border-bottom:2px solid var(--line);
}
h2.section:first-of-type{margin-top:0;}
h3.subsection{font-family:var(--serif);font-weight:600;font-size:clamp(1.2rem,3vw,1.45rem);color:var(--maroon);margin:1.8rem 0 .4rem;}
p{margin:0 0 1.05rem;max-width:72ch;color:var(--ink);}
main strong{font-weight:600;color:var(--navy);}
.lead{font-size:1.05rem;}

/* editable placeholder token */
.placeholder{background:#fff5d6;border-bottom:1px dashed #d9a300;padding:0 .25em;border-radius:3px;font-weight:600;color:#7a5900;}

/* Call-to-action buttons */
.form-actions{display:flex;flex-wrap:wrap;gap:14px;margin:1.2rem 0 1.6rem;}
.btn{
  display:inline-flex;align-items:center;gap:.55rem;background:var(--navy);color:#fff;
  padding:12px 20px;border-radius:8px;font-weight:600;font-size:.95rem;text-decoration:none;
  border:1px solid var(--navy);transition:background .18s ease,transform .05s ease;
}
.btn:hover{background:#123a66;text-decoration:none;color:#fff;}
.btn:active{transform:translateY(1px);}
.btn.secondary{background:#fff;color:var(--navy);border-color:var(--navy);}
.btn.secondary:hover{background:var(--bg-soft);color:var(--navy);}
.btn svg{width:17px;height:17px;flex:none;}

.note{
  background:var(--bg-soft);border:1px solid var(--line);border-left:4px solid var(--maroon);
  padding:14px 18px;border-radius:6px;margin:1.2rem 0 1.6rem;font-size:.95rem;color:var(--muted);max-width:72ch;
}
.note p{margin:0;color:var(--muted);}

hr.div{border:none;border-top:1px solid var(--line);margin:2.6rem 0 0;}

/* ---------- Schedule (index) ---------- */
.schedule{list-style:none;margin:1.2rem 0 1.6rem;padding:0;max-width:760px;}
.schedule li{
  display:flex;gap:18px;align-items:flex-start;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.schedule li:last-child{border-bottom:none;}
.sched-date{
  flex:none;min-width:132px;font-family:var(--serif);font-weight:600;color:var(--maroon);
  font-size:1.02rem;line-height:1.35;
}
.sched-body{color:var(--ink);}
.sched-body .sched-title{font-weight:600;color:var(--navy);display:block;}
.sched-body .sched-sub{color:var(--muted);font-size:.94rem;}

/* quick facts row on index */
.facts{display:flex;flex-wrap:wrap;gap:14px;margin:1.4rem 0 1.8rem;}
.fact{
  flex:1 1 220px;background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:16px 18px;
}
.fact .fact-label{font-size:.78rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--maroon);margin-bottom:.25rem;}
.fact .fact-value{font-family:var(--serif);font-size:1.12rem;font-weight:600;color:var(--navy);}

/* ---------- Committee grid ---------- */
.committee{
  list-style:none;margin:1.2rem 0 1.6rem;padding:0;
  display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;
}
.committee li{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:16px 18px;
}
.committee .name{font-family:var(--serif);font-size:1.12rem;font-weight:600;color:var(--navy);}
.committee .name a{color:var(--navy);}
.committee .affil{color:var(--muted);font-size:.92rem;margin-top:.2rem;}
.committee .role{
  display:inline-block;margin-top:.5rem;font-size:.72rem;font-weight:600;letter-spacing:.04em;
  text-transform:uppercase;color:#fff;background:var(--maroon);padding:2px 9px;border-radius:99px;
}

/* placeholder / to-be-announced pages */
.tba{
  text-align:center;color:var(--muted);
  padding:36px 20px;margin:1.5rem 0;
  border:1px dashed var(--line);border-radius:12px;background:var(--bg-soft);
}
.tba svg{width:34px;height:34px;color:var(--maroon);margin-bottom:8px;}
.tba p{margin:.2rem auto;max-width:44ch;}

/* ---------- Footer ---------- */
footer{max-width:var(--maxw);margin:0 auto;padding:22px clamp(18px,5vw,40px) 46px;color:var(--muted);font-size:.88rem;text-align:center;}
footer a{color:var(--navy);}

@media (max-width:560px){
  nav.mainnav a{padding:11px 12px;font-size:.85rem;}
  .schedule li{flex-direction:column;gap:4px;}
  .sched-date{min-width:0;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
}