/* ============================================================
   MetMeSS 2026 - site.css
   Sections of the home page. Tokens live in base.css.
   ============================================================ */

/* ---------- announcement ---------- */
.announce{
  border-bottom:1px solid var(--glass-line);
  background:linear-gradient(90deg,rgba(30,74,124,.55),rgba(16,42,72,.45));
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  position:relative;z-index:60;
}
.announce .wrap{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-block:11px}
.announce p{flex:1;min-width:230px;font-size:.9rem;color:#dceaf6}
.announce b{color:#fff}

/* ---------- nav ---------- */
.site-head{position:sticky;top:0;z-index:50;transition:background-color .3s ease,border-color .3s ease}
.site-head::before{
  content:"";position:absolute;inset:0;z-index:-1;opacity:0;
  background:rgba(7,13,24,.72);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
  border-bottom:1px solid var(--glass-line);
  transition:opacity .3s ease;
}
.site-head.stuck::before{opacity:1}
.nav{display:flex;align-items:center;gap:18px;height:72px;position:relative}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand img{height:36px;width:auto}
.brand .bt{font-family:var(--disp);font-weight:700;font-size:1.02rem;color:#fff;line-height:1.1}
.brand .bs{display:block;font-family:var(--sans);font-size:.6rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.navlinks{display:flex;align-items:center;gap:2px;margin-left:auto}
.navlinks a{
  color:var(--ink);font-size:.85rem;font-weight:500;
  padding:8px 11px;border-radius:9px;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.navlinks a:hover{background:rgba(255,255,255,.09);color:#fff}
.navlinks .btn{margin-left:8px}
.burger{
  display:none;margin-left:auto;width:44px;height:44px;
  align-items:center;justify-content:center;
  background:rgba(255,255,255,.07);border:1px solid var(--glass-line);
  border-radius:var(--r-ctrl);color:#fff;cursor:pointer;
}
.burger svg{width:20px;height:20px}

/* ---------- hero ---------- */
.hero{padding-block:clamp(34px,4vw,52px) clamp(52px,7vw,80px)}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(28px,5vw,64px);align-items:center}
.hero-logo{width:min(186px,42%);margin-bottom:20px}
.hero h1{font-size:clamp(1.95rem,4.1vw,3.05rem)}
.hero p.lead{margin-top:16px;max-width:38ch}
.hero .btn-row{margin-top:26px}

.cd{padding:clamp(20px,3vw,28px)}
.cd h2{font-family:var(--sans);font-size:.7rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.cd-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;text-align:center}
.cd-grid div{background:rgba(255,255,255,.055);border:1px solid var(--glass-line);border-radius:var(--r-ctrl);padding:13px 4px}
.cd-grid b{display:block;font-family:var(--disp);font-weight:600;font-size:clamp(1.25rem,3.2vw,1.85rem);color:#fff;line-height:1;font-variant-numeric:tabular-nums}
.cd-grid small{font-size:.62rem;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-3)}
.cd-facts{margin-top:16px;padding-top:14px;border-top:1px solid var(--glass-line);display:grid;gap:7px}
.cd-facts div{display:flex;gap:10px;font-size:.87rem;color:var(--ink-2);align-items:baseline}
.cd-facts dt{flex:none;width:58px;font-size:.68rem;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-3)}
.cd-facts dd{color:var(--ink)}

/* ---------- partner strip (sits under the hero, never inside it) ---------- */
.partners{border-block:1px solid var(--glass-line);background:rgba(255,255,255,.022)}
.partners .wrap{display:flex;align-items:center;justify-content:center;gap:clamp(14px,2.6vw,26px);flex-wrap:wrap;padding-block:26px}
.partners .plate{
  display:flex;align-items:center;justify-content:center;
  min-height:78px;padding:14px 22px;border-radius:16px;
  background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.5);
}
.partners img{height:48px;width:auto}
.partners .plabel{font-size:.7rem;letter-spacing:.19em;text-transform:uppercase;color:var(--ink-3);width:100%;text-align:center}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,60px);align-items:center}
.figs{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;align-items:stretch}
.figs figure{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-card);border:1px solid var(--glass-line);
  background:rgba(255,255,255,.03);
}
.figs img{aspect-ratio:1;object-fit:cover;width:100%}
.figs figcaption{font-size:.78rem;color:var(--ink-3);padding:10px 12px;text-align:center}

/* ---------- themes: six cells, deliberately uneven ---------- */
.themes{display:grid;grid-template-columns:repeat(6,1fr);gap:clamp(14px,2vw,18px)}
.theme{padding:clamp(20px,2.6vw,28px);grid-column:span 2}
.theme:nth-child(1),.theme:nth-child(2){grid-column:span 3}
.theme:nth-child(6){grid-column:span 6;display:flex;gap:22px;align-items:flex-start}
.theme:nth-child(6) .tn{margin-bottom:0;flex:none}
.theme:nth-child(6) p{max-width:70ch}
.theme .tn{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;margin-bottom:15px;
  background:rgba(232,181,92,.14);border:1px solid rgba(232,181,92,.28);
  color:var(--accent);font-family:var(--disp);font-weight:600;font-size:.85rem;
}
.theme p{color:var(--ink-2);font-size:.92rem;margin-top:9px}

/* ---------- dates: a spine, not a table of hairlines ---------- */
.timeline{position:relative;padding-left:30px;max-width:820px}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:linear-gradient(180deg,transparent,var(--glass-line-2) 12%,var(--glass-line-2) 88%,transparent)}
.tl{position:relative;padding-block:16px;display:grid;grid-template-columns:1fr auto;gap:10px 20px;align-items:baseline}
.tl::before{content:"";position:absolute;left:-29px;top:26px;width:11px;height:11px;border-radius:50%;background:var(--bg-2);border:1px solid var(--glass-line-2)}
.tl.key::before{background:var(--accent);border-color:var(--accent)}
.tl h3{font-weight:500;color:var(--ink)}
.tl time{font-family:var(--disp);font-size:.95rem;color:#fff;white-space:nowrap;font-variant-numeric:tabular-nums}
.tl .tag{
  display:inline-block;margin-left:9px;padding:2px 9px;border-radius:999px;
  font-size:.64rem;letter-spacing:.11em;text-transform:uppercase;vertical-align:middle;
  background:rgba(232,181,92,.15);color:var(--accent);border:1px solid rgba(232,181,92,.28);
}

/* ---------- speakers ---------- */
.people{display:grid;grid-template-columns:repeat(5,1fr);gap:clamp(14px,2vw,22px)}
.person{text-align:center}
.person .ph{
  position:relative;width:100%;aspect-ratio:1;border-radius:50%;overflow:hidden;
  background:linear-gradient(150deg,rgba(255,255,255,.09),rgba(255,255,255,.02));
  border:1px solid var(--glass-line);
  display:flex;align-items:center;justify-content:center;
  color:var(--ink-3);font-family:var(--disp);font-size:1.4rem;margin-bottom:14px;
}
.person .ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.person h3{font-size:.96rem}
.person .aff{font-size:.8rem;color:var(--ink-2);margin-top:4px}
.person .topic{font-size:.76rem;color:var(--accent);margin-top:7px}

/* ---------- programme ---------- */
.tabs{display:flex;gap:8px;margin-bottom:24px;overflow-x:auto;scrollbar-width:none;padding-bottom:4px}
.tabs::-webkit-scrollbar{display:none}
.tab{
  flex:none;padding:9px 19px;border-radius:999px;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid var(--glass-line);
  color:var(--ink-2);font:inherit;font-size:.87rem;font-weight:500;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.tab:hover{color:#fff;border-color:var(--glass-line-2)}
.tab[aria-selected="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-in);font-weight:600}
.panel{padding:clamp(18px,2.6vw,28px)}
.panel[hidden]{display:none}
.slot{display:grid;grid-template-columns:104px 1fr;gap:8px 22px;padding-block:15px}
.slot+.slot{border-top:1px solid rgba(255,255,255,.07)}
.slot time{font-family:var(--disp);font-size:.92rem;color:var(--accent);font-variant-numeric:tabular-nums}
.slot p{color:var(--ink-2);font-size:.9rem;margin-top:3px}

/* ---------- take part ---------- */
.tracks{display:grid;grid-template-columns:1fr 1fr;gap:clamp(16px,2.4vw,22px);margin-bottom:clamp(26px,4vw,40px)}
.track{padding:clamp(22px,3vw,30px);display:flex;flex-direction:column}
.track .tnum{
  display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;
  border-radius:50%;background:var(--accent);color:var(--accent-in);
  font-family:var(--disp);font-weight:700;font-size:.87rem;margin-bottom:16px;
}
.track p{color:var(--ink-2);font-size:.93rem;margin-top:9px;flex:1}
.track .btn-row{margin-top:22px}

.fees{display:grid;grid-template-columns:1.6fr 1fr;gap:clamp(20px,3vw,40px);align-items:start}
.tw{overflow-x:auto;border-radius:var(--r-card);border:1px solid var(--glass-line)}
table{width:100%;border-collapse:collapse;min-width:430px}
caption{text-align:left;font-family:var(--disp);font-size:1.05rem;color:#fff;padding:0 0 14px}
th,td{padding:13px 18px;text-align:left;font-size:.91rem}
th{
  background:rgba(255,255,255,.05);color:#fff;font-family:var(--disp);
  font-size:.72rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;
}
td{color:var(--ink-2);border-top:1px solid rgba(255,255,255,.07)}
td:first-child{color:var(--ink)}
td+td{font-variant-numeric:tabular-nums;white-space:nowrap}

.notice{
  border-radius:var(--r-ctrl);padding:15px 19px;font-size:.89rem;color:#ecdfc4;
  background:rgba(232,181,92,.09);border:1px solid rgba(232,181,92,.26);
  border-left:3px solid var(--accent);
}
.notice b{color:var(--accent)}
.notice+.notice{margin-top:14px}

/* ---------- venue ---------- */
.venue{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,44px);align-items:start}
.map{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--glass-line);min-height:330px}
.map iframe{display:block;width:100%;height:100%;min-height:330px;border:0}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:clamp(24px,4vw,40px)}
.gallery img{aspect-ratio:4/3;object-fit:cover;width:100%;border-radius:14px;border:1px solid var(--glass-line)}

/* ---------- committee ---------- */
.committee{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,2vw,20px)}
.com{padding:24px}
.com h3{color:var(--accent);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:14px}
.com li{list-style:none;font-size:.92rem;color:var(--ink);padding-block:6px}
.com li span{display:block;font-size:.79rem;color:var(--ink-3)}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(24px,4vw,44px);align-items:start}
.contact-card{padding:clamp(22px,3vw,30px)}
.contact-card dt{font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);margin-top:18px}
.contact-card dt:first-of-type{margin-top:0}
.contact-card dd{font-size:.97rem;margin-top:5px;overflow-wrap:anywhere}
.conduct li{color:var(--ink-2);font-size:.93rem;margin-bottom:9px;margin-left:18px}

/* ---------- footer ---------- */
.site-foot{border-top:1px solid var(--glass-line);background:rgba(4,9,18,.55);padding-block:52px 26px;margin-top:var(--sp)}
.fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:clamp(28px,5vw,52px);margin-bottom:34px}
.site-foot h3{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.site-foot ul{list-style:none}
.site-foot li{margin-bottom:2px}
.site-foot li a{display:inline-block;padding:7px 0;min-height:40px}
.site-foot a{color:var(--ink-2);font-size:.9rem}
.site-foot a:hover{color:var(--accent)}
.fbot{border-top:1px solid var(--glass-line);padding-top:22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.82rem;color:var(--ink-3)}

/* ---------- scroll reveal (CSS only, no scroll listener) ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   Responsive. Every multi-column block declares its own collapse.
   ============================================================ */

/* --- large tablet / small laptop --- */
@media(max-width:1080px){
  .people{grid-template-columns:repeat(4,1fr)}
  .themes .theme,.themes .theme:nth-child(1),.themes .theme:nth-child(2),.themes .theme:nth-child(6){grid-column:span 3;display:block}
  .themes .theme:nth-child(6) .tn{margin-bottom:15px}
}

/* --- tablet --- */
@media(max-width:900px){
  html{scroll-padding-top:76px}
  .nav{height:66px}
  .navlinks{
    display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;padding:10px;
    background:rgba(9,17,30,.97);
    -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
    border:1px solid var(--glass-line);border-radius:var(--r-card);
    box-shadow:var(--lift);
  }
  .navlinks.open{display:flex}
  .navlinks a{padding:13px 14px;font-size:.95rem}
  .navlinks .btn{margin:6px 0 0}
  .burger{display:inline-flex}

  .hero-grid,.about-grid,.venue,.contact,.fees{grid-template-columns:1fr}
  .hero-logo{width:min(168px,40%)}
  .hero p.lead{max-width:52ch}
  .tracks{grid-template-columns:1fr}
  .committee{grid-template-columns:1fr 1fr}
  .people{grid-template-columns:repeat(3,1fr)}
  .fgrid{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .map,.map iframe{min-height:280px}
}

/* --- phone --- */
@media(max-width:640px){
  .themes{grid-template-columns:1fr}
  .themes .theme,.themes .theme:nth-child(1),.themes .theme:nth-child(2),.themes .theme:nth-child(6){grid-column:auto;display:block}
  .people{grid-template-columns:repeat(2,1fr)}
  .committee,.fgrid{grid-template-columns:1fr}
  .slot{grid-template-columns:1fr;gap:2px}
  .partners .plate{min-height:64px;padding:11px 16px}
  .partners img{height:36px}
  .timeline{padding-left:24px}
  .tl{grid-template-columns:1fr;padding-block:14px}
  .tl::before{left:-23px;top:22px}
  .tl time{font-size:.88rem}
  .btn{width:100%}
  .btn-row{flex-direction:column;align-items:stretch}
  .navlinks .btn,.announce .btn{width:auto}
  .fbot{flex-direction:column;gap:8px}
  .cd-facts dt{width:52px}
}

/* --- very small phones --- */
@media(max-width:400px){
  .cd-grid{grid-template-columns:repeat(2,1fr)}
  .figs,.gallery{grid-template-columns:1fr}
  .people{grid-template-columns:1fr}
  .brand .bs{display:none}
}