/* ============================================================
   program.css — Scientific Program page
   ============================================================ */

/* Day Tab Buttons */
.day-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.day-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 32px;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-white);
  cursor: pointer;
  transition: var(--transition);
  min-width: 110px;
}

.day-tab:hover {
  border-color: var(--primary-light);
  background: var(--bg-light);
  transform: translateY(-2px);
}

.day-tab.active {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.tab-date {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
}

.tab-label {
  font-size: 0.75rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  opacity: 0.75;
  margin-top: 2px;
}

/* Day Content Panels */
.day-content {
  display: none;
  animation: fadeIn 0.4s ease;
}

.day-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}

.day-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-left: 4px solid var(--accent);
  padding-left: 20px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.day-header-left {}

.day-header h3 {
  font-size: 1.4rem;
  margin-bottom: 4px;
}

.day-header p {
  color: var(--text-light);
  font-size: 0.92rem;
}

.download-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  padding: 7px 14px;
  white-space: nowrap;
}

/* Schedule List */
.schedule-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.schedule-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  background: var(--bg-white);
}

.schedule-item:last-child { border-bottom: none; }

.schedule-item:hover {
  background: var(--bg-light);
}

.schedule-item.keynote {
  background: rgba(26,58,92,0.03);
}

.schedule-item.keynote:hover {
  background: rgba(26,58,92,0.07);
}

.schedule-item.highlight {
  background: rgba(200,169,110,0.06);
}

.schedule-item.highlight:hover {
  background: rgba(200,169,110,0.12);
}

.sch-time {
  padding: 20px 24px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(0,0,0,0.02);
  border-right: 1px solid var(--border);
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.sch-body {
  padding: 18px 28px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  justify-content: center;
}

.sch-type {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
}

.schedule-item.keynote .sch-type { color: var(--primary-light); }
.schedule-item.highlight .sch-type { color: #a8893e; }

.sch-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.4;
}

.sch-speaker {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
  .day-tabs { gap: 8px; }
  .day-tab { padding: 10px 20px; min-width: 80px; }

  .schedule-item {
    grid-template-columns: 1fr;
  }

  .sch-time {
    padding: 10px 16px;
    border-right: none;
    border-bottom: 1px solid var(--border);
    background: rgba(26,58,92,0.04);
  }

  .sch-body { padding: 12px 16px; }
}