/* Design tokens. Conference palette from the existing widgets; see docs/BRAND.md for the official brand-guide palette. */
:root{
  --navy:#16324f; --ink:#1c2b3a; --mute:#5d6b79; --line:#e3e7eb; --bg:#f6f8fa; --card:#fff;
  --blue:#003DA5;
  --plenary:#2f6fb0; --plenary-bg:#eaf2fb;
  --learning:#2f9e52; --learning-bg:#eefbf0;
  --posters:#8a4fc0; --posters-bg:#f5eefb;
  --roundtables:#d98a1f; --roundtables-bg:#fff6ea;
  --career:#1f9e96; --career-bg:#eafbfa;
  --general:#5b6b7c; --general-bg:#f1f4f7;
  --radius:12px; --tabh:58px;
  /* Brand fonts: FF Mark (licensed) → Montserrat substitute; Hoefler Mercury → Source Serif. Swap when fonts are licensed for web. */
  --font:"Montserrat",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (prefers-color-scheme:dark){:root{--ink:#e8eef4;--mute:#9fb0c0;--line:#2a3a4a;--bg:#0f1b27;--card:#16263a;--blue:#8cc0ee;
  --plenary-bg:#16304d;--learning-bg:#12301f;--posters-bg:#2a1b3b;--roundtables-bg:#3a2a12;--career-bg:#10312f;--general-bg:#1c2b3a}}
*{box-sizing:border-box}
html,body{margin:0}
button,a,input{font:inherit}
.skip-link{position:absolute;left:-9999px;top:8px;background:#fff;color:#003DA5;padding:8px 12px;z-index:100;border-radius:6px}.skip-link:focus{left:8px}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.45;-webkit-text-size-adjust:100%;
  padding-bottom:calc(var(--tabh) + env(safe-area-inset-bottom))}
a{color:var(--blue)}
.top{position:sticky;top:0;z-index:20;background:var(--navy);color:#fff;display:flex;justify-content:space-between;align-items:center;
  padding:calc(10px + env(safe-area-inset-top)) 16px 10px}
.brand b{font-size:18px;letter-spacing:.5px}.brand span{display:block;font-size:11px;opacity:.8}
.top-actions{display:flex;align-items:center;gap:6px}.top-action{color:#fff;text-decoration:none;border:1px solid rgba(255,255,255,.45);border-radius:16px;font:700 12px var(--font);padding:6px 11px;white-space:nowrap}.top-action span{color:#ffd45a;margin-right:3px}.install{background:#fff;color:var(--navy);border:0;border-radius:16px;font:700 12px var(--font);padding:7px 11px;white-space:nowrap;cursor:pointer}
main{padding:12px 16px 24px;max-width:720px;margin:0 auto;outline:none}
h1{font-size:20px;margin:6px 0 10px}h2{font-size:16px;margin:18px 0 8px}
.welcome{border:0;background:linear-gradient(135deg,rgba(0,61,165,.94),rgba(0,119,200,.82)),url("https://conference.fulbright.org/wp-content/uploads/2026/10/FACON26-signage-background.jpg") center/cover;color:#fff;padding:18px;margin:4px 0 18px}.welcome h1{font-size:27px;line-height:1.15;margin:7px 0}.welcome .r{color:#e7f3ff}.welcome-copy{font-size:14px;max-width:52ch;margin:12px 0 0}.eyebrow{font-size:10px;text-transform:uppercase;letter-spacing:.08em;font-weight:700;opacity:.9}.section-heading{display:flex;justify-content:space-between;align-items:baseline}.section-heading h2{margin:0 0 8px}.section-heading a{font-size:12px;font-weight:700}.spotlight{display:flex;gap:9px;overflow-x:auto;padding:2px 0 4px;scrollbar-width:none}.spotlight::-webkit-scrollbar{display:none}.spotlight-card{min-width:112px;max-width:122px;text-decoration:none;color:inherit}.spotlight-card img,.spotlight-avatar{display:block;width:100%;height:92px;object-fit:cover;border-radius:10px;background:var(--line)}.spotlight-avatar{display:flex;align-items:center;justify-content:center;color:var(--blue);font-size:30px}.spotlight-card span{display:block;font-size:12px;font-weight:700;margin-top:4px}.spotlight-card small{display:block;color:var(--mute);font-size:10px;margin-top:1px}
.tabs{position:fixed;bottom:0;left:0;right:0;height:calc(var(--tabh) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);
  background:var(--card);border-top:1px solid var(--line);display:flex;z-index:30}
.tabs a{flex:1;text-decoration:none;color:var(--mute);font-size:10.5px;font-weight:600;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}
.tabs a i{font-style:normal;font-size:18px;line-height:1}
.tabs a.on{color:var(--navy)}@media (prefers-color-scheme:dark){.tabs a.on{color:#fff}}
.seg{display:flex;gap:6px;overflow-x:auto;padding:2px 0 8px;scrollbar-width:none}.seg::-webkit-scrollbar{display:none}
.seg button,.chip{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:18px;padding:7px 13px;font:600 12.5px var(--font);white-space:nowrap;cursor:pointer}
.seg button.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.seg.tracks button.on{background:var(--c,var(--navy));border-color:var(--c,var(--navy))}
.block{margin:14px 0}
.time{font-size:12px;font-weight:700;color:var(--mute);margin-bottom:6px;display:flex;align-items:center;gap:8px}
.now{background:#e5484d;color:#fff;border-radius:8px;font-size:10px;padding:1px 6px}
.item{background:var(--c-bg,var(--general-bg));border-left:4px solid var(--c,var(--general));border-radius:var(--radius);padding:10px 12px;margin-bottom:8px;position:relative}
.item.plenary{--c:var(--plenary);--c-bg:var(--plenary-bg)}.item.learning{--c:var(--learning);--c-bg:var(--learning-bg)}
.item.posters{--c:var(--posters);--c-bg:var(--posters-bg)}.item.roundtables{--c:var(--roundtables);--c-bg:var(--roundtables-bg)}
.item.career{--c:var(--career);--c-bg:var(--career-bg)}
.tag{display:inline-block;background:var(--c,var(--general));color:#fff;font-size:10px;font-weight:700;border-radius:8px;padding:1px 7px;margin-bottom:4px;text-transform:uppercase;letter-spacing:.4px}
.item .name{font-weight:700;font-size:14.5px;padding-right:34px}.item .det{font-size:12.5px;color:var(--mute);margin-top:3px}.item .loc{font-size:12px;font-weight:600;margin-top:4px}
.star{position:absolute;top:6px;right:6px;border:0;background:transparent;font-size:22px;color:var(--mute);cursor:pointer;padding:6px;line-height:1}
.star.on{color:#e6a700}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px;margin-bottom:10px}
.list a.row{display:flex;gap:12px;align-items:center;text-decoration:none;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:10px;margin-bottom:8px}
.avatar{width:52px;height:52px;border-radius:50%;object-fit:cover;background:var(--line);flex:none;display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--mute)}
.row .n{font-weight:700;font-size:14px}.row .r{font-size:12px;color:var(--mute)}
input[type=search]{width:100%;padding:11px 14px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:500 15px var(--font);margin-bottom:10px}
.bio{white-space:pre-line;font-size:14px}.hero{display:flex;gap:14px;align-items:center;margin-bottom:12px}.hero .avatar{width:84px;height:84px;font-size:24px}
.back{display:inline-block;margin:2px 0 8px;font-weight:600;font-size:13px;text-decoration:none}
.floor{display:flex;gap:10px;margin-bottom:10px}.badge{background:var(--navy);color:#fff;border-radius:10px;width:54px;flex:none;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:9px;font-weight:700;text-transform:uppercase}
.badge b{font-size:22px}.plate{flex:1;display:flex;flex-direction:column;gap:6px}
.skip{text-align:center;font-size:11px;font-weight:700;color:var(--mute);text-transform:uppercase;border:1px dashed var(--line);border-radius:10px;padding:5px;margin-bottom:10px}
.empty{color:var(--mute);text-align:center;padding:30px 10px}
.pill{display:inline-block;font-size:11px;font-weight:600;border:1px solid var(--line);border-radius:10px;padding:1px 8px;margin:2px 4px 2px 0;color:var(--mute);text-decoration:none}
.sponsor-intro{margin-top:-4px}.sponsor-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.sponsor-card{display:flex;flex-direction:column;gap:6px;min-height:128px;align-items:center;justify-content:center;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease}.sponsor-card:hover,.sponsor-card:focus-visible{transform:translateY(-2px);box-shadow:0 6px 18px rgba(22,50,79,.12)}.sponsor-card img{display:block;max-width:90%;max-height:64px;width:auto;height:auto;object-fit:contain}.sponsor-card span{font-size:11px;line-height:1.1;font-weight:700;color:#16324f;text-align:center}

@media (max-width:430px){
  :root{--tabh:78px}
  .top{padding-left:12px;padding-right:12px}
  .brand b{font-size:16px}.brand span{font-size:10px}
  .top-actions{gap:4px}.top-action,.install{font-size:11px;padding:6px 8px}
  main{padding:12px 12px 24px}
  .welcome{padding:16px;margin-bottom:16px}.welcome h1{font-size:24px}
  .tabs a{font-size:10.5px;line-height:1.05;gap:5px;padding:5px 1px;text-align:center}
  .tabs a i{font-size:26px;line-height:1;transform:scale(1.22);transform-origin:center}
  .sponsor-card{min-height:128px;padding:10px}.sponsor-card img{max-height:62px}
}
@media (max-width:430px){
  .top{padding-left:10px;padding-right:10px}
  .top-actions{gap:4px}.top-action,.install{font-size:15px;padding:9px 8px}
}

/* Android browsers can expose a wider CSS viewport while still being used by touch.
   Keep the guide full-width and comfortably readable on those devices. */
@media (pointer:coarse), (max-width:900px){
  :root{--tabh:144px}
  body{font-size:25.5px}
  .top{min-height:92px;padding:18px 16px}
  .brand b{font-size:32px}.brand span{font-size:18px}
  .top-actions{gap:6px}.top-action,.install{font-size:18px;padding:11px 12px}
  main{width:100%;max-width:none;padding:18px 12px 32px}
  h1{font-size:40px;margin:12px 0 18px}h2{font-size:31px;margin:28px 0 14px}
  .welcome{padding:24px;margin:6px 0 28px}.welcome h1{font-size:48px}.welcome-copy{font-size:25.5px}.eyebrow{font-size:18px}
  .section-heading a{font-size:21px}.spotlight{gap:14px}.spotlight-card{min-width:165px;max-width:178px}.spotlight-card img,.spotlight-avatar{height:138px}.spotlight-avatar{font-size:45px}.spotlight-card span{font-size:21px}.spotlight-card small{font-size:18px}
  .seg{gap:9px}.seg button,.chip{font-size:22px;padding:12px 17px}
  .time{font-size:21px}.item{padding:18px 20px;margin-bottom:14px}.item .name{font-size:27px;padding-right:48px}.item .det{font-size:22px}.item .loc{font-size:21px}.tag{font-size:16px;padding:3px 10px}.star{font-size:42px;padding:8px}
  .card{padding:22px}.list a.row{padding:18px;gap:18px}.avatar{width:78px;height:78px}.row .n{font-size:25px}.row .r{font-size:21px}
  input[type=search]{font-size:25px;padding:18px}
  .tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-template-rows:repeat(2,minmax(68px,1fr));height:calc(var(--tabh) + env(safe-area-inset-bottom));overflow:hidden;align-items:stretch}
  .tabs a{min-width:0;width:100%;min-height:68px;font-size:14px;line-height:1.1;gap:4px;padding:5px 4px;white-space:normal}
  .tabs a i{font-size:34px;line-height:1}
  .tabs a span{display:block;flex:none;width:100%;max-width:100%;font-size:14px;line-height:1.1;text-align:center;white-space:normal;overflow-wrap:normal;word-break:normal;transform:none}
  .tabs a:nth-child(5){grid-column:2}.tabs a:nth-child(6){grid-column:3}.tabs a:nth-child(7){grid-column:4}
  .sponsor-grid{gap:14px}.sponsor-card{min-height:180px;padding:16px}.sponsor-card img{max-height:96px}.sponsor-card span{font-size:19px}
}
@media (max-width:430px){
  .top{padding:16px 12px;min-height:92px}
  .brand b{font-size:32px}.brand span{font-size:16px}
  .top-action{display:none}.top-actions{gap:4px}.install{font-size:15px;padding:10px 11px}
  .tabs a i{font-size:34px}
}