:root{
  --sns-primary: #0d6efd;
  --sns-accent: #8a2be2;
  --sns-dark: #0b132b;
}
html, body { scroll-behavior: smooth; }
.hero {
  background: radial-gradient(1000px 500px at 10% -10%, rgba(138,43,226,.25), transparent 60%),
              radial-gradient(800px 400px at 90% 0%, rgba(13,110,253,.2), transparent 50%);
  border-radius: 1.25rem;
}
.badge-accent { background: var(--sns-accent); }
.nav-link.active { font-weight: 600; }
.card { border-radius: 1rem; }
.section-title{
  border-left: .25rem solid var(--sns-primary);
  padding-left: .75rem;
  margin-top: 1rem;
}
footer a { text-decoration: none; }
.table-schedule th, .table-schedule td { vertical-align: middle; }

/* Speaker avatar dimensions */
.speaker-avatar {
  width: 96px;
  height: 96px;
  object-fit: cover;
}

/* subtle glow to keep the logo readable on the dark gradient */
.hero-logo {
  filter: drop-shadow(0 4px 16px rgba(0,0,0,.25));
}

.sponsor-logo {
  height: clamp(60px, 12vw, 90px);
  max-width: 240px;
  width: auto;
  object-fit: contain;
  flex: 0 0 auto;
}

.invited-speakers-list {
  padding-left: 1.25rem;
  margin-bottom: 0;
}

.invited-speakers-list li + li {
  margin-top: .35rem;
}

/* Added to fade as scroll */
.navbar {
  transition: opacity 0.3s ease;
  will-change: opacity, transform;
}
/* Finish */