:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --secondary-color: #64748b;
  --light-gray: #f1f5f9;
  --dark-gray: #334155;
  --danger-color: #ef4444;
  --success-color: #10b981;
  --white: #ffffff;
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --transition: all 0.3s ease;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: #f8fafc;
  color: var(--dark-gray);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Card Styling */
.card {
  border-radius: 12px;
  border: none;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  margin-bottom: 20px;
}

.card:hover {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.card-title {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 20px;
}

.form-card {
  background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
}

/* Total Card */
.total-card {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: var(--white);
}

.total-card h3 {
  font-weight: 700;
  margin-bottom: 5px;
}

/* Form Controls */
.form-control, .form-select {
  border-radius: 8px;
  padding: 10px 15px;
  border: 1px solid #d1d5db;
  transition: var(--transition);
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

/* Buttons */
.btn {
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: 500;
  transition: var(--transition);
}

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

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
}

.btn-outline-secondary {
  color: var(--secondary-color);
  border-color: var(--secondary-color);
}

.btn-outline-secondary:hover {
  background-color: var(--secondary-color);
  color: var(--white);
}

/* Expense Items */
.expense-item {
  border-radius: 10px;
  margin-bottom: 15px;
  background-color: var(--white);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  transition: var(--transition);
}

.expense-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.expense-header {
  cursor: pointer;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--white);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.expense-header h5 {
  margin: 0;
  font-weight: 600;
}

.expense-amount {
  font-weight: 700;
  color: var(--primary-color);
}

.expense-content {
  padding: 15px 20px;
  background-color: var(--light-gray);
}

.expense-details {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed #d1d5db;
}

.expense-actions {
  margin-top: 15px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.expense-edit {
  color: var(--primary-color);
  cursor: pointer;
}

.expense-delete {
  color: var(--danger-color);
  cursor: pointer;
}

/* Custom accordion styles to avoid duplicate indicators */
.accordion-button::after {
  display: none;
}

/* Modal styling */
.modal-content {
  border-radius: 12px;
  border: none;
}

.modal-header {
  background-color: var(--primary-color);
  color: var(--white);
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
}

.modal-title {
  font-weight: 600;
}

/* Flatpickr customizations */
.flatpickr-calendar {
  border-radius: 10px;
  box-shadow: var(--card-shadow);
}

.flatpickr-day.selected {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .row {
    flex-direction: column;
  }
  
  .col-md-5, .col-md-7 {
    width: 100%;
  }
  
  .expense-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .expense-amount {
    margin-top: 8px;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.expense-item {
  animation: fadeIn 0.3s ease-out;
}

/* Category */
.category-badge {
  background-color: var(--primary-color);
  color: white;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  display: inline-block;
  margin-right: 5px;
}

/* Footer */
footer {
  color: var(--secondary-color);
  font-size: 0.9rem;
  padding: 20px 0;
  border-top: 1px solid #e2e8f0;
}

/* Transitions */
.fade-enter-active, .fade-leave-active {
  transition: opacity 0.5s;
}

.fade-enter, .fade-leave-to {
  opacity: 0;
}