.day {
  margin-top: 3rem;
}

.day h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: #1f2937;
}

.session {
  margin-bottom: 0.4rem;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  overflow: hidden;
  background: #ffffff;
}

.session summary {
  display: flex;
  gap: 1rem;
  align-items: center;
  cursor: pointer;
  padding: 0.6rem 1.2rem;
  list-style: none;
  transition: background 0.2s ease;
}

.session summary:hover {
  background: #eff6ff;
}

.session summary::-webkit-details-marker {
  display: none;
}

.session-time {
  color: #1533db;
  font-family: monospace;
  white-space: nowrap;
}

.session-title {
  font-weight: 500;
  color: #111827;
}

.session-content {
  padding: 0 1.2rem 1.2rem;
}

.chair {
  color: #6b7280;
  font-size: 1.02rem;
  margin-bottom: 0.5rem;
}

.talk {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1rem;
  padding: 0.8rem 0;
  border-top: 1px solid #f1f5f9;
}

.talk-time {
  font-family: monospace;
  color: #1533db;
}

.talk-title {
  font-weight: 400;
  color: #111827;
}

.talk-authors {
  margin-top: 0.25rem;
  color: #6b7280;
  font-size: 1.02rem;
}

.session.invited {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
}

.session.invited summary:hover {
  background: #dbeafe;
}

.badge {
  display: inline-block;

  margin-right: 0.5rem;
  padding: 0.15rem 0.55rem;

  border-radius: 999px;

  background: #2563eb;
  color: white;

  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.break {
  display: flex;
  gap: 1rem;
  align-items: center;

  padding: 0.6rem 1.2rem;
  margin-bottom: 0.4rem;

  background: #f8fafc;

  border: 1px dashed #d1d5db;
  border-radius: 14px;

  color: #6b7280;
}

.break .session-time {
  color: #94a3b8;
}

.break .session-title {
  font-weight: 300;
}