/* Subjects Container */
.subjects-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0;
}

/* Section Styling */
.add-subject-section {
  background: linear-gradient(135deg, rgba(140, 35, 30, 0.1), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 30px;
  margin-bottom: 40px;
}

.subjects-list-section {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 30px;
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 24px;
  text-align: center;
}

/* Form Styling */
.subject-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 400px;
  margin: 0 auto;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 14px;
  color: #ffffff;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  transition: all 0.3s ease;
}

.form-input::placeholder {
  color: #888;
}

.form-input:focus {
  outline: none;
  border-color: rgba(140, 35, 30, 0.5);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 2px rgba(140, 35, 30, 0.2);
}

.form-input:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

/* Button Styling */
.btn-primary {
  background: linear-gradient(135deg, #8C231E, #a52a24);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #a52a24, #8C231E);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(140, 35, 30, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Form Actions */
.form-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

/* Error Messages */
.error-message {
  color: #ff6b6b;
  font-size: 13px;
  font-weight: 500;
  background: rgba(255, 107, 107, 0.1);
  border: 1px solid rgba(255, 107, 107, 0.2);
  border-radius: 6px;
  padding: 8px 12px;
  text-align: center;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 40px 20px;
}

.empty-message {
  color: #888;
  font-size: 16px;
  font-style: italic;
}

/* Subjects Grid */
.subjects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.subject-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  transition: all 0.3s ease;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.subject-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  border-color: rgba(140, 35, 30, 0.3);
  background: rgba(255, 255, 255, 0.08);
}

.subject-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  text-decoration: none;
  color: inherit;
  width: 100%;
  height: 100%;
  gap: 12px;
}

.subject-name {
  font-size: 18px;
  font-weight: 600;
  color: #ffffff;
  margin: 0;
  flex: 1;
  text-align: center;
}

.subject-arrow {
  color: #888;
  font-size: 20px;
  font-weight: bold;
  transition: all 0.3s ease;
  opacity: 0.6;
}

.subject-card:hover .subject-arrow {
  color: #8C231E;
  opacity: 1;
  transform: translateX(4px);
}

/* Responsive Design */
@media (max-width: 768px) {
  .subjects-container {
    padding: 0 15px;
  }

  .add-subject-section,
  .subjects-list-section {
    padding: 20px;
    margin-bottom: 24px;
  }

  .section-title {
    font-size: 20px;
    margin-bottom: 20px;
  }

  .subject-form {
    max-width: 100%;
  }

  .subjects-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .subject-card {
    border-radius: 8px;
  }

  .subject-link {
    padding: 16px;
  }

  .subject-name {
    font-size: 16px;
  }
}

/* Animation */
.subjects-container {
  animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}