/* Minimal responsive UI */
:root{
  --bg:#fff;
  --fg:#111827;
  --muted:#6b7280;
  --rose:#e11d48;
  --ring:#e5e7eb;
  --shadow:0 1px 2px rgba(0,0,0,.05);
}

html,body{
  margin:0;
  padding:0;
  font-family:system-ui,Segoe UI,Roboto,Inter,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--fg);
}

/* smooth anchors + fix "heading hidden behind sticky nav" */
html{scroll-behavior:smooth}
.section{scroll-margin-top:90px}
[id]{scroll-margin-top:90px}

a{color:var(--rose);text-decoration:none}
a:hover{text-decoration:underline}

.container{max-width:1100px;margin:0 auto;padding:0 16px}

/* Full-width wrapper (break out of .container) */
.full-bleed{
  width:100vw;
  margin-left:calc(50% - 50vw);
  margin-right:calc(50% - 50vw);
}

/* Nav */
.nav{
  position:sticky;
  top:0;
  background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--ring);
  z-index:100;
}
.nav .inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 16px;
  flex-wrap:wrap;
}
.brand{display:flex;align-items:center}
.brand-logo{height:40px;display:block}
.nav .links{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  justify-content:flex-end;
}
.nav .links a{
  padding:8px 10px;
  border-radius:999px;
}
.nav .links a:hover{background:#f3f4f6}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--rose);
  color:#fff;
  border:none;
  border-radius:999px;
  padding:10px 16px;
  font-weight:600;
  box-shadow:var(--shadow);
}
.btn.outline{
  background:#fff;
  color:#111;
  border:1px solid var(--ring);
}

/* Badges */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--ring);
  background:#fff;
  color:#374151;
  font-size:12px;
}

/* Hero */
.hero{
  background:linear-gradient(180deg,#fff1f2,#fff7ed,#fff);
  padding:50px 0 30px;
}
.hero h1{
  font-size:28px;
  line-height:1.2;
  margin:10px 0;
}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap}

/* Grids / Cards */
.grid{display:grid;gap:16px}

.cards3{grid-template-columns:repeat(1,minmax(0,1fr))}
@media(min-width:700px){.cards3{grid-template-columns:repeat(3,minmax(0,1fr))}}

.cards4{grid-template-columns:repeat(1,minmax(0,1fr))}
@media(min-width:700px){.cards4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:980px){.cards4{grid-template-columns:repeat(4,minmax(0,1fr))}}

.card{
  background:#fff;
  border:1px solid var(--ring);
  border-radius:16px;
  padding:18px;
  box-shadow:var(--shadow);
}

/* Sections */
.section{padding:40px 0}
.section h2{font-size:24px;margin:0 0 12px}

/* Tables */
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid var(--ring);text-align:left}

/* Key/Value grid */
.kv{display:grid;grid-template-columns:160px 1fr;gap:8px}

/* Inputs */
input,select,textarea{
  width:100%;
  padding:10px;
  border:1px solid var(--ring);
  border-radius:12px;
  background:#fff;
}

/* Helpers */
.small{font-size:12px}
.muted{color:var(--muted)}
.section-tag{margin:6px 0 10px;letter-spacing:.02em;text-transform:uppercase}

/* Footer */
.footer{border-top:1px solid var(--ring);padding:24px 0;color:var(--muted)}

/* Countdown */
.countdown{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:12px 0}
.counter{border:1px solid var(--ring);padding:10px;border-radius:12px;text-align:center;background:#fff}
.counter .val{font-weight:700;font-size:20px}

/* Tabbar */
.tabbar{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.tabbar a{padding:8px 12px;border:1px solid var(--ring);border-radius:999px}
.tabbar a.active{background:#fee2e2;border-color:#fecaca}

/* Logos (generic) */
.org-logos,
.sponsor-logos{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  align-items:center;
  margin:8px 0 12px;
}
.org-logos img,
.sponsor-logos img{
  height:40px;
  max-width:160px;
  object-fit:contain;
}

/* Organizers & Sponsor banner (UPDATED ONLY THIS PART) */
.org-sponsor-banner{
  width:100%;
  margin:12px 0 18px;
  padding:0 16px; /* padding for full-bleed */
  background:linear-gradient(180deg,#fff1f2,#fff);
  border-top:1px solid var(--ring);
  border-bottom:1px solid var(--ring);
}

.org-sponsor-banner .org-block{
  max-width:1100px; /* matches .container */
  margin:0 auto;
  border:1px solid var(--ring);
  border-radius:16px;
  padding:14px;
  background:#fff;
  box-shadow:var(--shadow);
}

.org-block .label{
  font-weight:700;
  margin-bottom:8px;
}

.org-block .logos{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  margin:6px 0 10px;
}

.org-block .logos img{
  height:44px;
  max-width:200px;
  object-fit:contain;
}

/* Venue highlight */
.venue-highlight{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:12px 14px;
  border:1px solid var(--ring);
  border-radius:14px;
  background:#fff;
  box-shadow:var(--shadow);
  margin:16px 0 0;
}
.venue-highlight .icon{line-height:1.2}

/* Keynote cards: compact + muted brief line */
.keynote-card{padding:14px}
.keynote-meta{text-align:center}

.keynote-photo-wrap{display:flex;justify-content:center;margin-bottom:10px}
.keynote-photo{
  width:72px;
  height:72px;
  border-radius:999px;
  object-fit:cover;
  border:1px solid var(--ring);
  background:#fff;
}

.keynote-badge{
  display:inline-block;
  font-size:11px;
  padding:4px 8px;
  border-radius:999px;
  border:1px solid var(--ring);
  background:#fff;
  color:#374151;
  margin-bottom:6px;
}

/* Tracks: make text more compact (only inside Tracks grid) */
.tracks-grid .card{padding:14px}

.tracks-grid .card h3{
  font-size:15px;
  line-height:1.25;
  margin:0 0 6px;
}

.tracks-grid .card p{
  font-size:12px;
  line-height:1.35;
  color:var(--muted);
  margin:0;
}

.keynote-meta h3{font-size:16px;line-height:1.2;margin:6px 0 2px}
.keynote-meta .affiliation{font-size:12px;color:var(--muted);margin:0 0 6px}
.keynote-meta .brief{font-size:12px;color:var(--muted);margin:0;line-height:1.35}