body.dark-mode {
  --body-bg: #000000;
  --card-bg: #222222;
  --card-border: #333333;
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #adb5bd; /* Brightened for better readability */
  --chart-grid: #333333;
  --box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.2);
  --input-bg: #2a2a2a;
  --input-border: #444444;
  --input-text: #f9fafb;
  --input-placeholder: #adb5bd;
  --btn-hover: #333333;
  background-color: var(--body-bg);
  color: var(--text-primary);
}

body.dark-mode .navbar {
  background-color: #000000 !important;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

body.dark-mode .navbar-light .navbar-brand,
body.dark-mode .navbar-light .navbar-nav .nav-link {
  color: var(--text-primary);
}

body.dark-mode .navbar-light .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

body.dark-mode .navbar-light .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.2);
}

body.dark-mode .footer {
  background-color: #000000;
  border-color: #333333;
}

body.dark-mode .card {
  background-color: var(--card-bg);
  border-color: var(--card-border);
}

body.dark-mode .card-header {
  background-color: rgba(0, 0, 0, 0.3);
  border-color: var(--card-border);
}

/* Improved button styles for dark mode */
body.dark-mode .btn-outline-secondary {
  color: #e9ecef;
  border-color: #4b5563;
}

body.dark-mode .btn-outline-secondary:hover {
  background-color: #4b5563;
  color: #ffffff;
}

body.dark-mode .btn-outline-primary {
  color: #1DCD9F;
  border-color: #1DCD9F;
}

body.dark-mode .btn-outline-primary:hover {
  background-color: #1DCD9F;
  color: #000000;
}

/* Progress bar improvements */
body.dark-mode .progress {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Improved table contrast */
body.dark-mode .table {
  color: var(--text-primary);
}

body.dark-mode .table-striped > tbody > tr:nth-of-type(odd) {
  background-color: rgba(255, 255, 255, 0.05);
}

body.dark-mode .table td,
body.dark-mode .table th {
  border-color: #333333;
}

/* Modal improvements */
body.dark-mode .modal-content {
  background-color: var(--card-bg);
  border-color: var(--card-border);
}

body.dark-mode .modal-header {
  border-color: var(--card-border);
}

body.dark-mode .modal-footer {
  border-color: var(--card-border);
}

/* Form enhancements for dark mode */
body.dark-mode .form-control {
  background-color: var(--input-bg);
  border-color: var(--input-border);
  color: var(--input-text);
}

body.dark-mode .form-control:focus {
  background-color: var(--input-bg);
  color: var(--input-text);
  border-color: var(--primary-color);
}

body.dark-mode .form-control::placeholder {
  color: var(--input-placeholder);
  opacity: 0.7;
}

body.dark-mode .form-select {
  background-color: var(--input-bg);
  color: var(--input-text);
  border-color: var(--input-border);
  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='%23ffffff' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
}

body.dark-mode .input-group-text {
  background-color: #444444;
  border-color: #444444;
  color: var(--input-text);
}

/* Chart enhancements for dark mode */
body.dark-mode .chart-wrapper canvas {
  filter: brightness(0.9) contrast(1.1);
}

/* Dark mode toggle button */
body.dark-mode #dark-mode-toggle {
  color: #1DCD9F;
  border-color: #1DCD9F;
}

body.dark-mode #dark-mode-toggle:hover {
  background-color: rgba(29, 205, 159, 0.1);
}

/* Badge colors for dark mode */
body.dark-mode .badge.bg-success {
  background-color: #1DCD9F !important;
}

body.dark-mode .badge.bg-danger {
  background-color: #dc2626 !important;
}

body.dark-mode .badge.bg-warning {
  background-color: #d97706 !important;
  color: #fff;
}

body.dark-mode .badge.bg-info {
  background-color: #0ea5e9 !important;
  color: #fff;
}

/* List group improvements */
body.dark-mode .list-group-item {
  background-color: var(--card-bg);
  border-color: var(--card-border);
  color: var(--text-primary);
}

/* Tab navigation improvements */
body.dark-mode .nav-tabs {
  border-bottom-color: #444444;
}

body.dark-mode .nav-tabs .nav-link {
  color: var(--text-secondary);
}

body.dark-mode .nav-tabs .nav-link:hover {
  border-color: #444444 #444444 #444444;
  color: var(--text-primary);
}

body.dark-mode .nav-tabs .nav-link.active {
  color: #1DCD9F;
  background-color: var(--card-bg);
  border-color: #444444 #444444 transparent;
}

/* Accordion improvements */
body.dark-mode .accordion-item {
  background-color: var(--card-bg);
  border-color: var(--card-border);
}

body.dark-mode .accordion-button {
  background-color: var(--card-bg);
  color: var(--text-primary);
}

body.dark-mode .accordion-button:not(.collapsed) {
  background-color: rgba(29, 205, 159, 0.1);
  color: #1DCD9F;
}

body.dark-mode .accordion-button::after {
  filter: invert(1);
}

/* Improved dropdown menu */
body.dark-mode .dropdown-menu {
  background-color: #222222;
  border-color: #333333;
}

body.dark-mode .dropdown-item {
  color: var(--text-primary);
}

body.dark-mode .dropdown-item:hover,
body.dark-mode .dropdown-item:focus {
  background-color: #333333;
  color: #1DCD9F;
}

body.dark-mode .dropdown-divider {
  border-color: #444444;
}

/* Tooltip improvements */
body.dark-mode .tooltip-inner {
  background-color: #000000;
  color: #f9fafb;
}

/* Custom improvements for charts in dark mode */
body.dark-mode .chart-container {
  background-color: var(--card-bg);
}

body.dark-mode .chart-legend {
  color: var(--text-muted);
}