.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}

.modal-content {
  background-color: var(--darker-bg);
  margin: 5% auto;
  padding: 20px;
  border: 1px solid var(--primary-color);
  border-radius: var(--border-radius);
  width: 90%;
  max-width: 1000px;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.light-theme .modal-content {
  background-color: #ffffff;
  border: 1px solid var(--primary-color);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.close-modal {
  color: var(--gray-text);
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  transition: color var(--transition-speed);
}

.close-modal:hover {
  color: var(--primary-color);
}

.modal-header {
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.light-theme .modal-header {
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.modal-header h2 {
  color: var(--primary-color);
  font-size: 28px;
  margin: 0;
}

.modal-body {
  color: var(--light-text);
}

.comparison-modal-content {
  width: 95%;
  max-width: 1200px;
  max-height: 90vh;
}

.program-comparison-header {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
}

.program-column {
  flex: 1;
  padding: 15px;
  background: rgba(30, 30, 30, 0.4);
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.light-theme .program-column {
  background: rgba(240, 242, 245, 0.9);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.program-column h3 {
  color: var(--primary-color);
  margin-bottom: 10px;
  font-size: 20px;
}

.program-column p {
  color: var(--gray-text);
  font-size: 14px;
  line-height: 1.5;
}

.comparison-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 8px 15px;
  background: rgba(30, 30, 30, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius);
  color: var(--light-text);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition-speed);
}

.tab-btn:hover {
  background: rgba(241, 90, 34, 0.2);
}

.tab-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.light-theme .tab-btn {
  background: #e4e6eb;
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: #1c1e21;
}

.light-theme .tab-btn:hover {
  background: rgba(241, 90, 34, 0.1);
}

.light-theme .tab-btn.active {
  background: var(--primary-color);
  color: white;
}

.tab-content {
  display: none;
}

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

.comparison-table-container {
  overflow-x: auto;
  margin-bottom: 30px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}

.comparison-table th {
  background-color: rgba(241, 90, 34, 0.2);
  color: var(--light-text);
  text-align: left;
  padding: 12px 15px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.comparison-table td {
  padding: 10px 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--gray-text);
  font-size: 14px;
}

.light-theme .comparison-table th {
  background-color: rgba(241, 90, 34, 0.1);
  color: var(--dark-text);
}

.light-theme .comparison-table td {
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.similarity-badge,
.difference-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.similarity-badge {
  background-color: rgba(0, 255, 0, 0.1);
  color: #4caf50;
  border: 1px solid rgba(0, 255, 0, 0.2);
}

.difference-badge {
  background-color: rgba(255, 0, 0, 0.1);
  color: #f44336;
  border: 1px solid rgba(255, 0, 0, 0.2);
}

.light-theme .similarity-badge {
  background-color: rgba(0, 255, 0, 0.05);
  color: #2e7d32;
}

.light-theme .difference-badge {
  background-color: rgba(255, 0, 0, 0.05);
  color: #c62828;
}

.similar-row {
  background-color: rgba(0, 255, 0, 0.03);
}

.different-row {
  background-color: rgba(255, 0, 0, 0.03);
}

.light-theme .similar-row {
  background-color: rgba(0, 255, 0, 0.05);
}

.light-theme .different-row {
  background-color: rgba(255, 0, 0, 0.05);
}

.semester-comparison {
  margin-bottom: 30px;
}

.semester-comparison h4 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 18px;
  border-bottom: 1px solid rgba(241, 90, 34, 0.2);
  padding-bottom: 5px;
}

@media (max-width: 768px) {
  .program-comparison-header {
    flex-direction: column;
  }

  .comparison-tabs {
    justify-content: center;
  }

  .tab-btn {
    padding: 6px 10px;
    font-size: 12px;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 8px 10px;
    font-size: 12px;
  }
}