/**
 * Dark Mode Theme for TaxHelper
 * Professional dark theme with careful contrast ratios
 */

/* Dark Mode Color Tokens */
[data-theme="dark"] {
    /* Primary Colors */
    --color-primary-50: #1e1f4b;
    --color-primary-100: #2a2b5f;
    --color-primary-200: #363773;
    --color-primary-300: #4547a0;
    --color-primary-400: #5558c8;
    --color-primary-500: #6366F1;
    --color-primary-600: #8183f4;
    --color-primary-700: #a0a1f7;
    --color-primary-800: #c0c1fa;
    --color-primary-900: #e0e0fc;
    
    /* Gray Scale (Inverted for dark mode) */
    --color-gray-50: #18181b;
    --color-gray-100: #27272a;
    --color-gray-200: #3f3f46;
    --color-gray-300: #52525b;
    --color-gray-400: #71717a;
    --color-gray-500: #a1a1aa;
    --color-gray-600: #d4d4d8;
    --color-gray-700: #e4e4e7;
    --color-gray-800: #f4f4f5;
    --color-gray-900: #fafafa;
    
    /* Semantic Colors */
    --color-success-500: #22c55e;
    --color-success-100: #052e16;
    --color-success-600: #16a34a;
    
    --color-warning-500: #f59e0b;
    --color-warning-100: #451a03;
    --color-warning-600: #d97706;
    
    --color-danger-500: #ef4444;
    --color-danger-100: #450a0a;
    --color-danger-600: #dc2626;
    
    --color-info-500: #3b82f6;
    --color-info-100: #1e3a5f;
    --color-info-600: #2563eb;
    
    /* Backgrounds */
    --bg-primary: #0f0f11;
    --bg-secondary: #18181b;
    --bg-tertiary: #27272a;
    --bg-elevated: #2a2a2e;
    
    /* Text Colors */
    --text-primary: #fafafa;
    --text-secondary: #d4d4d8;
    --text-tertiary: #a1a1aa;
    --text-muted: #71717a;
    
    /* Borders */
    --border-color: #3f3f46;
    --border-color-light: #27272a;
    --border-color-focus: #6366F1;
    
    /* Shadows (Subtle for dark mode) */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.6);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.7);
    
    /* Gradients for dark mode */
    --gradient-primary: linear-gradient(135deg, #6366F1, #8183f4);
    --gradient-success: linear-gradient(135deg, #22c55e, #16a34a);
    --gradient-danger: linear-gradient(135deg, #ef4444, #dc2626);
    --gradient-dark: linear-gradient(135deg, #27272a, #18181b);
    --gradient-subtle: linear-gradient(135deg, #27272a, #3f3f46);
}

/* Base Dark Mode Styles */
[data-theme="dark"] body {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Cards in Dark Mode */
[data-theme="dark"] .card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .card:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-color-focus);
}

/* Buttons in Dark Mode */
[data-theme="dark"] .btn-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

[data-theme="dark"] .btn-primary:hover {
    filter: brightness(1.1);
}

[data-theme="dark"] .btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .btn-secondary:hover {
    background: var(--bg-elevated);
    border-color: var(--border-color-focus);
}

[data-theme="dark"] .btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

[data-theme="dark"] .btn-ghost:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Form Elements in Dark Mode */
[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] .form-textarea:focus {
    background: var(--bg-elevated);
    border-color: var(--color-primary-500);
}

[data-theme="dark"] .form-input::placeholder,
[data-theme="dark"] .form-textarea::placeholder {
    color: var(--text-muted);
}

/* Navigation in Dark Mode */
[data-theme="dark"] .app-header {
    background: rgba(15, 15, 17, 0.95);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .nav-link {
    color: var(--text-secondary);
}

[data-theme="dark"] .nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .nav-link.active {
    background: var(--color-primary-900);
    color: var(--color-primary-500);
    background: rgba(99, 102, 241, 0.1);
}

/* Dashboard Elements in Dark Mode */
[data-theme="dark"] .stats-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .stats-value {
    color: var(--text-primary);
}

[data-theme="dark"] .stats-label {
    color: var(--text-secondary);
}

[data-theme="dark"] .stats-subtitle {
    color: var(--text-tertiary);
}

/* Charts in Dark Mode */
[data-theme="dark"] .bar {
    background: var(--gradient-primary);
}

[data-theme="dark"] .bar-value {
    color: var(--text-primary);
}

[data-theme="dark"] .bar-label {
    color: var(--text-secondary);
}

[data-theme="dark"] .chart-header h4 {
    color: var(--text-primary);
}

[data-theme="dark"] .chart-period {
    color: var(--text-tertiary);
}

/* Receipt Cards in Dark Mode */
[data-theme="dark"] .receipt-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .receipt-card:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-color-focus);
}

[data-theme="dark"] .receipt-merchant {
    color: var(--text-primary);
}

[data-theme="dark"] .receipt-date {
    color: var(--text-tertiary);
}

[data-theme="dark"] .receipt-card-footer {
    border-top-color: var(--border-color);
}

/* Modals in Dark Mode */
[data-theme="dark"] .modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .modal-header {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .modal-footer {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .modal-title {
    color: var(--text-primary);
}

[data-theme="dark"] .modal-body {
    color: var(--text-secondary);
}

/* Toast Notifications in Dark Mode */
[data-theme="dark"] .toast {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .toast-success {
    background: linear-gradient(135deg, #052e16, #14532d);
    border-color: var(--color-success-500);
}

[data-theme="dark"] .toast-error {
    background: linear-gradient(135deg, #450a0a, #7f1d1d);
    border-color: var(--color-danger-500);
}

[data-theme="dark"] .toast-warning {
    background: linear-gradient(135deg, #451a03, #78350f);
    border-color: var(--color-warning-500);
}

/* Mobile Navigation in Dark Mode */
[data-theme="dark"] .mobile-nav {
    background: var(--bg-secondary);
}

[data-theme="dark"] .mobile-nav-header {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .mobile-nav-link {
    color: var(--text-secondary);
}

[data-theme="dark"] .mobile-nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .mobile-nav-link.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary-500);
}

[data-theme="dark"] .mobile-nav-footer {
    border-top-color: var(--border-color);
}

/* Badges in Dark Mode */
[data-theme="dark"] .badge {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .badge-success {
    background: rgba(34, 197, 94, 0.2);
    color: var(--color-success-500);
}

[data-theme="dark"] .badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-warning-500);
}

[data-theme="dark"] .badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-danger-500);
}

[data-theme="dark"] .badge-info {
    background: rgba(59, 130, 246, 0.2);
    color: var(--color-info-500);
}

/* Progress Bars in Dark Mode */
[data-theme="dark"] .progress-bar-container {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .progress-bar-slim {
    background: var(--bg-tertiary);
}

/* Dropdowns in Dark Mode */
[data-theme="dark"] .dropdown-menu {
    background: var(--bg-elevated);
    border-color: var(--border-color);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-secondary);
}

[data-theme="dark"] .dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Loading States in Dark Mode */
[data-theme="dark"] .skeleton {
    background: linear-gradient(90deg,
        var(--bg-tertiary) 0%,
        var(--bg-elevated) 50%,
        var(--bg-tertiary) 100%
    );
}

/* Camera Interface in Dark Mode */
[data-theme="dark"] .camera-container {
    background: var(--bg-primary);
}

[data-theme="dark"] .camera-setting-btn {
    background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .camera-setting-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .camera-setting-btn.active {
    background: var(--color-primary-500);
}

[data-theme="dark"] .quality-panel {
    background: rgba(15, 15, 17, 0.95);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .quality-option:hover {
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .quality-option.active {
    background: var(--color-primary-500);
}

/* Upload Area in Dark Mode */
[data-theme="dark"] .upload-area {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .upload-area:hover {
    background: var(--bg-tertiary);
    border-color: var(--color-primary-500);
}

[data-theme="dark"] .upload-area.drag-over {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--color-primary-500);
}

[data-theme="dark"] .upload-title {
    color: var(--text-primary);
}

[data-theme="dark"] .upload-subtitle {
    color: var(--text-secondary);
}

/* Scrollbar in Dark Mode */
[data-theme="dark"] ::-webkit-scrollbar {
    background: var(--bg-secondary);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-400);
}

/* Focus States in Dark Mode */
[data-theme="dark"] :focus-visible {
    outline-color: var(--color-primary-500);
}

/* Selection in Dark Mode */
[data-theme="dark"] ::selection {
    background: rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
}

/* Transitions for Theme Switching */
* {
    transition: background-color 200ms ease-in-out,
                border-color 200ms ease-in-out,
                color 200ms ease-in-out;
}

/* Prevent transition on theme switch for certain elements */
[data-theme="dark"] img,
[data-theme="dark"] video,
[data-theme="dark"] iframe {
    transition: none;
}