.slot-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 1.5rem;
        margin-bottom: 2rem;
    }
.slot-ui .slot-card {
  background: linear-gradient(135deg, #fff8, #fff6);
  backdrop-filter: blur(16px);
  border: 1px solid #dce1e6;
  border-radius: 1rem;
  padding: 1.25rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}
.slot-ui .slot-card:hover {
  border-color: #0071e3;
}
.slot-ui .slot-card.selected {
  background: #e8f3ff;
  border-color: #0071e3;
  position: relative;
}

.slot-ui .slot-card-label {
  font-size: 1rem;
  font-weight: 500;
  color: #111;
}
.slot-ui .slot-empty {
  text-align: center;
  color: #666;
  padding: 2rem 0;
  font-size: 1.1rem;
}
.slot-ui .slot-pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
}
.slot-ui .slot-pagination a {
  width: 2.5rem; height: 2.5rem;
  display: flex;
  align-items: center; justify-content: center;
  border-radius: 50%;
  border: none;
  background: none;
  color: #555;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
}
.slot-ui .slot-pagination a:hover {
  background: #f0f4f8;
  color: #0071e3;
}
div#course-slot-selector {
    padding: 20px;
}