:root {
  --primary-color: #8B0000; /* Dark red for KMTC */
  --secondary-color: #DC143C; /* Crimson red */
  --accent-color: #B22222; /* Firebrick red */
  --medical-blue: #1E90FF; /* Dodger blue for medical accent */
  --light-bg: #fdf2f2; /* Light red background */
  --input-border: #e5b7b7;
}

body {
  background-color: #fdf2f2;
  font-family: 'Segoe UI', Roboto, system-ui, sans-serif;
  color: #2d3748;
  line-height: 1.5;
}

.navbar {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%) !important;
  border-bottom: 4px solid var(--medical-blue);
}

.main-card {
  border: none;
  border-top: 4px solid var(--secondary-color);
  box-shadow: 0 2px 8px rgba(220, 20, 60, 0.1);
  background: white;
}

.form-section {
  background: white;
  border-radius: 6px;
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--input-border);
  border-left: 4px solid var(--secondary-color);
}

.section-title {
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--input-border);
}

.form-label {
  font-weight: 600;
  color: #4a5568;
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
}

.form-control, .form-select {
  height: 2.75rem;
  border-radius: 4px;
  border: 1px solid var(--input-border);
  padding: 0.5rem 0.75rem;
  font-size: 0.9375rem;
}

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23DC143C' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 16px 12px;
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.btn-submit {
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
  padding: 0.75rem 2.5rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  border: none;
  color: white;
}

.btn-submit:hover {
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--primary-color) 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(220, 20, 60, 0.3);
}

.required-asterisk {
  color: var(--secondary-color);
}

.optional-badge {
  background-color: #ffe6e6;
  color: var(--primary-color);
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  margin-left: 0.5rem;
  border: 1px solid var(--input-border);
}

.medical-badge {
  background-color: var(--medical-blue);
  color: white;
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  margin-left: 0.5rem;
  font-weight: 600;
}

@media (max-width: 992px) {
  .subject-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .subject-grid {
    grid-template-columns: 1fr;
  }
}

/* Additional styles for header buttons */
.header-buttons {
  display: flex;
  gap: 10px;
  margin-left: auto;
}

.btn-home, .btn-paid {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-home {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-home:hover {
  background: rgba(255, 255, 255, 0.3);
  color: white;
  text-decoration: none;
}

.btn-paid {
  background: var(--medical-blue);
  color: white;
  border: 1px solid var(--medical-blue);
}

.btn-paid:hover {
  background: #1c7ed6;
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .header-buttons {
    gap: 8px;
  }
  
  .btn-home, .btn-paid {
    padding: 6px 12px;
    font-size: 14px;
  }
}

/* Additional medical-themed elements */
.medical-icon {
  color: var(--secondary-color);
}

.form-section-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.alert-medical {
  background-color: #fff5f5;
  border: 1px solid #fed7d7;
  border-left: 4px solid var(--secondary-color);
  color: #742a2a;
}

/* Science subjects emphasis */
.science-subject {
  border-left: 4px solid var(--medical-blue) !important;
}