/* /assets/css/themes.css */

/* ========================================
   Dark Theme Variables
   ======================================== */

[data-theme="dark"] {
    /* Primary Colors (adjusted for dark mode) */
    --primary-blue: #6B7ED6;
    --primary-dark: #4A5FBA;
    --primary-light: #8A9AE8;
    --primary-ultra-light: #2A3B7A;
    
    /* Secondary Colors (enhanced for dark mode) */
    --accent-gold: #FFD700;
    --accent-green: #32CD32;
    --accent-red: #FF6B6B;
    --accent-orange: #FFA500;
    --accent-purple: #9370DB;
    --accent-cyan: #00CED1;
    
    /* Neutral Colors - Dark Theme */
    --gray-50: #161719;
    --gray-100: #1C1E21;
    --gray-200: #343A40;
    --gray-300: #495057;
    --gray-400: #6C757D;
    --gray-500: #ADB5BD;
    --gray-600: #CED4DA;
    --gray-700: #DEE2E6;
    --gray-800: #E9ECEF;
    --gray-900: #F8F9FA;
    
    /* Semantic Colors - Dark Theme */
    --success: #32CD32;
    --success-light: #1F4F23;
    --warning: #FFD700;
    --warning-light: #4F4600;
    --danger: #FF6B6B;
    --danger-light: #4F1F1F;
    --info: #00CED1;
    --info-light: #1F4F4F;
    
    /* Background Colors - Dark Theme */
    --bg-primary: #161719;
    --bg-secondary: #1C1E21;
    --bg-tertiary: #343A40;
    --bg-overlay: rgba(0, 0, 0, 0.8);
    
    /* Text Colors - Dark Theme */
    --text-primary: #F8F9FA;
    --text-secondary: #ADB5BD;
    --text-muted: #6C757D;
    --text-inverse: #161719;
    
    /* Border Colors - Dark Theme */
    --border-light: #343A40;
    --border-medium: #495057;
    --border-dark: #6C757D;
}

/* ========================================
   Auto Theme (System Preference)
   ======================================== */

[data-theme="auto"] {
    /* Use light theme by default */
    --primary-blue: #4A5FBA;
    --primary-dark: #2A3B7A;
    --primary-light: #6B7ED6;
    --primary-ultra-light: #E8EAFE;
    
    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #E9ECEF;
    
    /* Text Colors */
    --text-primary: #212529;
    --text-secondary: #6C757D;
    --text-muted: #ADB5BD;
}

/* Auto theme dark preference */
@media (prefers-color-scheme: dark) {
    [data-theme="auto"] {
        /* Primary Colors */
        --primary-blue: #6B7ED6;
        --primary-dark: #4A5FBA;
        --primary-light: #8A9AE8;
        --primary-ultra-light: #2A3B7A;
        
        /* Background Colors */
        --bg-primary: #161719;
        --bg-secondary: #1C1E21;
        --bg-tertiary: #343A40;
        
        /* Text Colors */
        --text-primary: #F8F9FA;
        --text-secondary: #ADB5BD;
        --text-muted: #6C757D;
        
        /* Border Colors */
        --border-light: #343A40;
        --border-medium: #495057;
        --border-dark: #6C757D;
    }
}

/* ========================================
   High Contrast Theme
   ======================================== */

[data-theme="high-contrast"] {
    /* High contrast colors for accessibility */
    --primary-blue: #0000FF;
    --primary-dark: #000080;
    --primary-light: #4169E1;
    --primary-ultra-light: #E6F3FF;
    
    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F0F0F0;
    --bg-tertiary: #E0E0E0;
    
    /* Text Colors */
    --text-primary: #000000;
    --text-secondary: #333333;
    --text-muted: #666666;
    
    /* Border Colors */
    --border-light: #000000;
    --border-medium: #333333;
    --border-dark: #666666;
    
    /* Semantic Colors */
    --success: #008000;
    --warning: #FF8C00;
    --danger: #FF0000;
    --info: #0000FF;
}

[data-theme="high-contrast-dark"] {
    /* High contrast dark theme */
    --primary-blue: #00BFFF;
    --primary-dark: #0080FF;
    --primary-light: #40E0D0;
    --primary-ultra-light: #001F3F;
    
    /* Background Colors */
    --bg-primary: #000000;
    --bg-secondary: #1A1A1A;
    --bg-tertiary: #333333;
    
    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #CCCCCC;
    --text-muted: #999999;
    
    /* Border Colors */
    --border-light: #FFFFFF;
    --border-medium: #CCCCCC;
    --border-dark: #999999;
    
    /* Semantic Colors */
    --success: #00FF00;
    --warning: #FFFF00;
    --danger: #FF0000;
    --info: #00BFFF;
}

/* ========================================
   Theme-specific Component Adjustments
   ======================================== */

/* Dark theme specific adjustments */
[data-theme="dark"] .card {
    background-color: var(--bg-secondary);
    border-color: var(--border-light);
}

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

[data-theme="dark"] .btn-secondary:hover {
    background-color: var(--gray-300);
    border-color: var(--border-dark);
}

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

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] .form-textarea:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(107, 126, 214, 0.1);
}

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

[data-theme="dark"] .data-table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

[data-theme="dark"] .modal-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-light);
}

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

/* ========================================
   Theme Transition Animations
   ======================================== */

* {
    transition: 
        background-color 0.3s ease,
        color 0.3s ease,
        border-color 0.3s ease,
        box-shadow 0.3s ease;
}

/* Disable transitions during theme switching to prevent flash */
.theme-switching * {
    transition: none !important;
}

/* ========================================
   Theme Toggle Component
   ======================================== */

.theme-toggle {
    position: relative;
}

.theme-toggle .btn {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-all);
}

.theme-toggle .btn:hover {
    background-color: var(--bg-tertiary);
    transform: scale(1.1);
}

.theme-icon {
    font-size: 18px;
    transition: var(--transition-all);
}

/* Theme selector dropdown */
.theme-selector {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-2);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2);
    min-width: 200px;
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-base);
}

.theme-selector.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.theme-option {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: var(--text-sm);
}

.theme-option:hover {
    background-color: var(--bg-secondary);
}

.theme-option.active {
    background-color: var(--primary-ultra-light);
    color: var(--primary-blue);
    font-weight: var(--font-medium);
}

.theme-option-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.theme-option-info h4 {
    margin: 0;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.theme-option-info p {
    margin: 0;
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* ========================================
   Theme-specific Illustrations
   ======================================== */

/* Light theme background patterns */
[data-theme="light"] .hero-background::before {
    background: linear-gradient(45deg, var(--primary-ultra-light) 25%, transparent 25%),
                linear-gradient(-45deg, var(--primary-ultra-light) 25%, transparent 25%);
    background-size: 60px 60px;
    opacity: 0.1;
}

/* Dark theme background patterns */
[data-theme="dark"] .hero-background::before {
    background: linear-gradient(45deg, var(--primary-ultra-light) 25%, transparent 25%),
                linear-gradient(-45deg, var(--primary-ultra-light) 25%, transparent 25%);
    background-size: 60px 60px;
    opacity: 0.05;
}

/* ========================================
   Reduced Motion Preferences
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .theme-toggle .btn:hover {
        transform: none;
    }
    
    .loading-spinner {
        animation: none;
        border: 2px solid var(--border-medium);
        border-top-color: var(--primary-blue);
    }
}

/* ========================================
   Print Styles (Theme-neutral)
   ======================================== */

@media print {
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .theme-toggle,
    .sidebar,
    .notification-container {
        display: none !important;
    }
    
    .card {
        border: 1px solid #ccc !important;
        break-inside: avoid;
    }
    
    .btn {
        border: 1px solid #ccc !important;
        background: white !important;
        color: black !important;
    }
}

/* ========================================
   Color Blind Friendly Adjustments
   ======================================== */

/* Enhanced contrast for color blind users */
.colorblind-friendly {
    --success: #0066CC;
    --warning: #FF8800;
    --danger: #CC0000;
    --info: #6600CC;
}

/* Pattern overlays for better distinction */
.colorblind-friendly .badge-success::after {
    content: '✓';
    margin-left: var(--space-1);
}

.colorblind-friendly .badge-warning::after {
    content: '!';
    margin-left: var(--space-1);
}

.colorblind-friendly .badge-danger::after {
    content: '✗';
    margin-left: var(--space-1);
}

.colorblind-friendly .status-indicator.success::before {
    content: '●';
    color: var(--success);
}

.colorblind-friendly .status-indicator.warning::before {
    content: '▲';
    color: var(--warning);
}

.colorblind-friendly .status-indicator.danger::before {
    content: '■';
    color: var(--danger);
}

/* ========================================
   Theme-specific Loading States
   ======================================== */

[data-theme="dark"] .skeleton {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
}

[data-theme="dark"] .loading-spinner {
    border-color: var(--border-medium);
    border-top-color: var(--primary-blue);
}

/* ========================================
   Theme Performance Optimizations
   ======================================== */

/* Use transform for better performance */
.theme-transition {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Optimize repaints during theme switches */
.theme-switching {
    contain: layout style paint;
}

/* ========================================
   Custom Theme Variables
   ======================================== */

/* For custom themes that can be defined via CSS custom properties */
[data-theme="custom"] {
    /* These can be overridden via JavaScript */
    --custom-primary: var(--primary-blue);
    --custom-secondary: var(--accent-gold);
    --custom-accent: var(--accent-green);
    --custom-background: var(--bg-primary);
    --custom-text: var(--text-primary);
}

/* ========================================
   Browser Specific Adjustments
   ======================================== */

/* Safari specific fixes */
@supports (-webkit-backdrop-filter: blur(10px)) {
    [data-theme="dark"] .modal-content,
    [data-theme="dark"] .login-form-container {
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
        background-color: rgba(28, 30, 33, 0.9);
    }
}

/* Firefox specific adjustments */
@-moz-document url-prefix() {
    [data-theme="dark"] .form-input,
    [data-theme="dark"] .form-select {
        background-color: var(--bg-secondary);
    }
}