/* ========================================
   Light Theme Styles (Default)
   ======================================== */
body:not(.dark-theme),
body.light-theme {
    /* Light Theme Colors - Explicit */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --card-bg: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #dee2e6;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    
    /* Sidebar Light */
    --sidebar-bg: #ffffff;
    --sidebar-text: #6c757d;
    --sidebar-hover: #f8f9fa;
    --sidebar-active: #6366f1;
    
    /* Header Light */
    --header-bg: #ffffff;
    
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

/* Light Theme Main Content */
body:not(.dark-theme) .main-content,
body.light-theme .main-content {
    background-color: var(--bg-secondary);
}

body:not(.dark-theme) .content-wrapper,
body.light-theme .content-wrapper,
body:not(.dark-theme) .content-area,
body.light-theme .content-area,
body:not(.dark-theme) .page-container,
body.light-theme .page-container {
    background-color: transparent;
}

body:not(.dark-theme) .header,
body.light-theme .header {
    background-color: var(--header-bg);
    border-color: var(--border-color);
}

/* Light Theme Cards */
body:not(.dark-theme) .stat-card,
body.light-theme .stat-card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

body:not(.dark-theme) .card,
body.light-theme .card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

/* Light Theme Tables */
body:not(.dark-theme) .data-table th,
body.light-theme .data-table th {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

body:not(.dark-theme) .data-table td,
body.light-theme .data-table td {
    border-color: var(--border-color);
    color: var(--text-primary);
}

body:not(.dark-theme) .data-table tbody tr:hover td,
body.light-theme .data-table tbody tr:hover td {
    background: var(--bg-tertiary);
}

body:not(.dark-theme) .data-table-container,
body.light-theme .data-table-container {
    background: var(--card-bg);
    border-color: var(--border-color);
}

/* Light Theme Form Controls */
body:not(.dark-theme) .form-control,
body.light-theme .form-control {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Light Theme Page Elements */
body:not(.dark-theme) .page-header,
body.light-theme .page-header {
    background: var(--card-bg);
    border-color: var(--border-color);
}

body:not(.dark-theme) .page-title,
body.light-theme .page-title {
    color: var(--text-primary);
}

body:not(.dark-theme) .page-content,
body.light-theme .page-content {
    background: transparent;
}

/* Light Theme Filter Bar */
body:not(.dark-theme) .filter-bar .form-control,
body.light-theme .filter-bar .form-control {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Light Theme Modal */
body:not(.dark-theme) .modal-container,
body.light-theme .modal-container {
    background: var(--card-bg);
}

body:not(.dark-theme) .modal-header,
body.light-theme .modal-header {
    border-color: var(--border-color);
}

body:not(.dark-theme) .modal-footer,
body.light-theme .modal-footer {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

/* ========================================
   Dark Theme Styles
   ======================================== */
body.dark-theme {
    /* Dark Theme Colors */
    --bg-primary: #1a1d2e;
    --bg-secondary: #151823;
    --bg-tertiary: #1f2333;
    --card-bg: #1f2333;
    --text-primary: #e4e7eb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border-color: #2d3343;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    
    /* Sidebar Dark */
    --sidebar-bg: #1a1d2e;
    --sidebar-text: #9ca3af;
    --sidebar-hover: #1f2333;
    --sidebar-active: #6366f1;
    
    /* Header Dark */
    --header-bg: #1a1d2e;
}

/* Dark Theme Toggle Icons */
body.dark-theme .sun-icon {
    display: none;
}

body.dark-theme .moon-icon {
    display: block;
}

body:not(.dark-theme) .sun-icon {
    display: block;
}

body:not(.dark-theme) .moon-icon {
    display: none;
}

/* ========================================
   Theme Transition
   ======================================== */
body {
    transition: background-color 0.3s ease, color 0.3s ease;
}

.sidebar,
.header,
.stat-card,
.chart-card,
.table-card,
.search-input,
.user-dropdown,
.activity-item,
.card,
.form-control,
.modal-container,
.alert {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

/* ========================================
   Dark Theme Specific Adjustments
   ======================================== */
body.dark-theme .stat-card:hover,
body.dark-theme .chart-card,
body.dark-theme .table-card,
body.dark-theme .card {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.4);
}

body.dark-theme .data-table tbody tr:hover {
    background: var(--bg-tertiary);
}

body.dark-theme .sidebar::-webkit-scrollbar-thumb {
    background: #2d3343;
}

body.dark-theme .sidebar::-webkit-scrollbar-thumb:hover {
    background: #374151;
}

/* Dark Theme Card Styles */
body.dark-theme .card {
    background: var(--bg-primary);
    border-color: var(--border-color);
}

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

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

/* Dark Theme Form Controls */
body.dark-theme .form-control {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

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

body.dark-theme .form-control::placeholder {
    color: var(--text-muted);
}

body.dark-theme select.form-control {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* Dark Theme Button Outline */
body.dark-theme .btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

body.dark-theme .btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

body.dark-theme .btn-secondary:hover {
    background: var(--border-color);
}

/* Dark Theme Modal */
body.dark-theme .modal-container {
    background: var(--bg-primary);
}

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

body.dark-theme .modal-footer {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

/* Dark Theme Form Check */
body.dark-theme .form-check-label {
    color: var(--text-primary);
}

/* Dark Theme Badge */
body.dark-theme .badge-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Dark Theme Table */
body.dark-theme .data-table th {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

body.dark-theme .data-table td {
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Dark Theme Activity Item */
body.dark-theme .activity-item {
    background: var(--bg-secondary);
}

body.dark-theme .activity-item:hover {
    background: var(--bg-tertiary);
}

/* Dark Theme Overlay */
body.dark-theme .loading-overlay {
    background: rgba(26, 29, 46, 0.9);
}

/* ========================================
   Theme Toggle Button Animation
   ======================================== */
.theme-toggle {
    position: relative;
    overflow: hidden;
}

.theme-toggle svg {
    transition: all 0.3s ease;
}

.theme-toggle:hover svg {
    transform: rotate(20deg) scale(1.1);
}

/* ========================================
   Dark Theme Body & Main Layout
   ======================================== */
body.dark-theme {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

body.dark-theme .main-content {
    background-color: var(--bg-primary);
}

body.dark-theme .content-wrapper,
body.dark-theme .content-area,
body.dark-theme .page-container,
body.dark-theme .page-content {
    background-color: var(--bg-primary);
}

body.dark-theme .sidebar {
    background-color: var(--sidebar-bg);
    border-color: var(--border-color);
}

body.dark-theme .header {
    background-color: var(--header-bg);
    border-color: var(--border-color);
}

body.dark-theme .sidebar-header {
    border-color: var(--border-color);
}

body.dark-theme .nav-link {
    color: var(--sidebar-text);
}

body.dark-theme .nav-link:hover {
    background-color: var(--sidebar-hover);
    color: var(--text-primary);
}

body.dark-theme .nav-item.active .nav-link {
    background-color: var(--sidebar-active);
    color: #ffffff;
}

body.dark-theme .nav-item.active .nav-link .nav-icon {
    stroke: #ffffff;
}

body.dark-theme .page-title {
    color: var(--text-primary);
}

body.dark-theme .page-subtitle {
    color: var(--text-secondary);
}

body.dark-theme .search-input {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

body.dark-theme .user-dropdown {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
}

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

body.dark-theme .dropdown-item:hover {
    background-color: var(--bg-tertiary);
}

/* ========================================
   Dark Theme Stats & Cards
   ======================================== */
body.dark-theme .stat-card {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

body.dark-theme .stat-card .stat-value {
    color: var(--text-primary);
}

body.dark-theme .stat-card .stat-label {
    color: var(--text-secondary);
}

body.dark-theme .stat-card .stat-change {
    color: var(--text-secondary);
}

body.dark-theme .stat-icon.blue {
    background: rgba(99, 102, 241, 0.2);
}

body.dark-theme .stat-icon.green {
    background: rgba(16, 185, 129, 0.2);
}

body.dark-theme .stat-icon.purple {
    background: rgba(168, 85, 247, 0.2);
}

body.dark-theme .stat-icon.orange {
    background: rgba(245, 158, 11, 0.2);
}

/* Dark Theme Welcome Banner */
body.dark-theme .welcome-banner {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

/* Dark Theme Chart Card */
body.dark-theme .chart-card {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

body.dark-theme .chart-title h4 {
    color: var(--text-primary);
}

body.dark-theme .chart-title p {
    color: var(--text-secondary);
}

body.dark-theme .legend-item {
    color: var(--text-secondary);
}

/* Dark Theme Quick Links */
body.dark-theme .quick-link {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

body.dark-theme .quick-link:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

body.dark-theme .quick-link-text h4 {
    color: var(--text-primary);
}

body.dark-theme .quick-link-text p {
    color: var(--text-secondary);
}

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

body.dark-theme .pt-card-header {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

body.dark-theme .pt-card-body {
    background-color: var(--bg-secondary);
}

body.dark-theme .pt-card-footer {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
}

body.dark-theme .pt-stat {
    background-color: var(--bg-tertiary);
}

body.dark-theme .pt-info h3 {
    color: var(--text-primary);
}

body.dark-theme .pt-code {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}

/* Dark Theme Page Header & Filter Bar */
body.dark-theme .page-header {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

body.dark-theme .filter-bar .form-control,
body.dark-theme .filter-bar select,
body.dark-theme .filter-bar input {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

body.dark-theme .overlay {
    background-color: rgba(0, 0, 0, 0.7);
}

body.dark-theme .toast {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

/* ========================================
   Color Scheme Preference Support
   ======================================== */
@media (prefers-color-scheme: dark) {
    /* Auto dark theme if no preference is set */
    /* This can be enabled by removing the body selector requirement */
}