/* ===== BSU PAGE ===== */

/* Hero */
.bsu-hero {
  padding: 80px 0 56px;
  text-align: center;
}

.bsu-hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: 16px;
}

.bsu-hero-sub {
  font-size: 1.1rem;
  color: var(--gray-600);
  line-height: 1.8;
  max-width: 520px;
  margin: 0 auto 32px;
}

.bsu-hero .product-eyebrow {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue-light);
  margin-bottom: 12px;
}

/* Presenters */
.bsu-presenters {
  padding: 80px 0;
}

.presenters-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.presenter-card {
  background: rgba(255,255,255,.5);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  box-shadow: 0 4px 24px rgba(10,108,205,.06);
  transition: all var(--transition);
}

.presenter-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,.7);
  border-color: var(--blue-light);
  box-shadow: 0 8px 32px rgba(10,108,205,.12);
}

.presenter-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(10,108,205,.08);
  border: 1px solid rgba(10,108,205,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--blue-light);
}

.presenter-card h3 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.presenter-card p {
  font-size: 0.85rem;
  color: var(--gray-600);
  line-height: 1.5;
}

/* Agenda */
.bsu-agenda {
  padding: 80px 0;
}

.agenda-layout {
  display: flex;
  gap: 48px;
  align-items: flex-start;
}

.agenda-days {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.agenda-day {
  background: rgba(255,255,255,.5);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: 0 4px 24px rgba(10,108,205,.06);
}

.agenda-day h3 {
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: 16px;
  color: var(--blue-light);
}

.agenda-day ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.agenda-day li {
  font-size: 0.95rem;
  color: var(--gray-600);
  padding-left: 20px;
  position: relative;
}

.agenda-day li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(10,108,205,.2);
  border: 1px solid rgba(10,108,205,.4);
}

.agenda-image {
  flex: 1;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--card-border);
  box-shadow: 0 4px 24px rgba(10,108,205,.06);
}

.agenda-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Registration */
.bsu-register {
  padding: 80px 0;
}

.register-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  max-width: 720px;
  margin: 0 auto;
}

.register-card {
  background: rgba(255,255,255,.5);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  box-shadow: 0 4px 24px rgba(10,108,205,.06);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  transition: all var(--transition);
}

.register-card:hover {
  background: rgba(255,255,255,.7);
  border-color: var(--blue-light);
  box-shadow: 0 8px 32px rgba(10,108,205,.12);
}

.register-card--highlight {
  border-color: rgba(10,108,205,.3);
  background: rgba(10,108,205,.04);
}

.register-card h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.register-card p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.6;
}

.register-price {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.price-sale {
  font-size: 2rem;
  font-weight: 600;
  color: var(--blue-light);
}

.price-original {
  font-size: 1rem;
  color: var(--gray-400);
  text-decoration: line-through;
}

/* Responsive */
@media (max-width: 1024px) {
  .presenters-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .agenda-layout {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .presenters-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .register-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .presenters-grid {
    grid-template-columns: 1fr;
  }
}