/*
Theme System for UnitedForHelp
CSS Variables-based theming with light/dark modes and future premium themes
*/

/* ===== ROOT THEME VARIABLES ===== */
:root {
    /* Light Theme (Default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-accent: #e2e8f0;
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #ffffff;
    
    --accent-primary: #3b82f6;
    --accent-secondary: #1d4ed8;
    --accent-hover: #2563eb;
    --accent-light: #dbeafe;
    
    --border-primary: #e2e8f0;
    --border-secondary: #cbd5e1;
    --border-focus: #3b82f6;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --error: #ef4444;
    --error-light: #fee2e2;
    --info: #06b6d4;
    --info-light: #cffafe;
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* ===== DARK THEME ===== */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-accent: #475569;
    
    --text-primary: #f8fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #cbd5e1;
    --text-inverse: #1e293b;
    
    --accent-primary: #60a5fa;
    --accent-secondary: #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: #1e3a8a;
    
    --border-primary: #334155;
    --border-secondary: #475569;
    --border-focus: #60a5fa;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    
    --success: #34d399;
    --success-light: #064e3b;
    --warning: #fbbf24;
    --warning-light: #78350f;
    --error: #f87171;
    --error-light: #7f1d1d;
    --info: #22d3ee;
    --info-light: #164e63;
}

/* ===== PREMIUM THEMES (Future) ===== */
[data-theme="ocean"] {
    --accent-primary: #0891b2;
    --accent-secondary: #0e7490;
    --accent-hover: #0284c7;
    --accent-light: #cffafe;
}

[data-theme="forest"] {
    --accent-primary: #059669;
    --accent-secondary: #047857;
    --accent-hover: #065f46;
    --accent-light: #d1fae5;
}

[data-theme="sunset"] {
    --accent-primary: #ea580c;
    --accent-secondary: #c2410c;
    --accent-hover: #9a3412;
    --accent-light: #fed7aa;
}

/* ===== THEME TRANSITIONS ===== */
/* Remove expensive global transitions that cause performance issues */
/* 
* {
    transition: 
        background-color var(--transition-normal),
        border-color var(--transition-normal),
        color var(--transition-normal),
        box-shadow var(--transition-normal);
}
*/

/* Apply targeted transitions only where needed for better performance */
.nav-link,
.search-button,
.btn-primary,
.btn-secondary,
.btn-outline,
.form-input,
.tool-card,
.category-card,
.breadcrumb-link,
.footer-link,
.theme-option {
    transition: 
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast);
}

/* ===== BASE STYLING WITH THEME VARIABLES ===== */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ===== COMPONENT THEMING ===== */

/* Header */
.header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-primary);
    box-shadow: var(--shadow-sm);
}

.nav-link {
    color: var(--text-secondary);
}

.nav-link:hover {
    color: var(--accent-primary);
}

.nav-link.active {
    color: var(--accent-primary);
    font-weight: 600;
}

/* Search Bar */
.search-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-container:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.search-input {
    background-color: transparent;
    color: var(--text-primary);
    border: none;
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-button {
    background-color: var(--accent-primary);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius-md);
}

.search-button:hover {
    background-color: var(--accent-hover);
}

/* Tool Cards */
.tool-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.tool-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.tool-card-title {
    color: var(--text-primary);
    font-weight: 600;
}

.tool-card-description {
    color: var(--text-secondary);
}

.tool-card-category {
    background-color: var(--accent-light);
    color: var(--accent-primary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

/* Category Cards */
.category-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
}

.category-card:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--accent-primary);
}

.category-icon {
    color: var(--accent-primary);
}

/* Buttons */
.btn-primary {
    background-color: var(--accent-primary);
    color: var(--text-inverse);
    border: 1px solid var(--accent-primary);
    border-radius: var(--radius-md);
}

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

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
}

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-secondary);
}

.btn-outline {
    background-color: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
    border-radius: var(--radius-md);
}

.btn-outline:hover {
    background-color: var(--accent-primary);
    color: var(--text-inverse);
}

/* Forms */
.form-input {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-light);
    outline: none;
}

.form-label {
    color: var(--text-primary);
    font-weight: 500;
}

.form-error {
    color: var(--error);
    font-size: 0.875rem;
}

/* Breadcrumbs */
.breadcrumb {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.breadcrumb-item {
    color: var(--text-muted);
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 500;
}

.breadcrumb-link {
    color: var(--accent-primary);
    text-decoration: none;
}

.breadcrumb-link:hover {
    color: var(--accent-hover);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    color: var(--text-secondary);
}

.footer-link {
    color: var(--text-muted);
}

.footer-link:hover {
    color: var(--accent-primary);
}

/* Theme Selector */
.theme-selector {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

.theme-option {
    padding: 0.5rem 1rem;
    cursor: pointer;
}

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

.theme-option.active {
    background-color: var(--accent-primary);
    color: var(--text-inverse);
}

/* Language Selector */
.language-selector {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

/* Status Indicators */
.status-active {
    background-color: var(--success-light);
    color: var(--success);
}

.status-maintenance {
    background-color: var(--warning-light);
    color: var(--warning);
}

.status-beta {
    background-color: var(--info-light);
    color: var(--info);
}

.status-deprecated {
    background-color: var(--error-light);
    color: var(--error);
}

/* Loading States */
.loading {
    color: var(--text-muted);
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-accent) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== FORCED LIGHT MODE (Override System Dark Mode) ===== */
[data-theme="light"] {
    /* Force light theme colors with !important to override system dark mode */
    --bg-primary: #ffffff !important;
    --bg-secondary: #f8fafc !important;
    --bg-tertiary: #f1f5f9 !important;
    --bg-accent: #e2e8f0 !important;
    
    --text-primary: #1e293b !important;
    --text-secondary: #475569 !important;
    --text-muted: #64748b !important;
    --text-inverse: #ffffff !important;
    
    --accent-primary: #3b82f6 !important;
    --accent-secondary: #1d4ed8 !important;
    --accent-hover: #2563eb !important;
    --accent-light: #dbeafe !important;
    
    --border-primary: #e2e8f0 !important;
    --border-secondary: #cbd5e1 !important;
    --border-focus: #3b82f6 !important;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05) !important;
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1) !important;
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1) !important;
    
    --success: #10b981 !important;
    --success-light: #d1fae5 !important;
    --warning: #f59e0b !important;
    --warning-light: #fef3c7 !important;
    --error: #ef4444 !important;
    --error-light: #fee2e2 !important;
    --info: #06b6d4 !important;
    --info-light: #cffafe !important;
}

/* Force light mode for body and html elements */
[data-theme="light"] body,
[data-theme="light"] html {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
}

/* Force light mode for modern cards */
[data-theme="light"] .modern-card {
    background: rgba(255, 255, 255, 0.9) !important;
    border: 1px solid rgba(226, 232, 240, 0.3) !important;
    color: var(--text-primary) !important;
}

[data-theme="light"] .modern-card:hover {
    background: rgba(255, 255, 255, 0.95) !important;
}

/* ===== RESPONSIVE THEME ADJUSTMENTS ===== */
@media (max-width: 768px) {
    .tool-card {
        border-radius: var(--radius-md);
    }
    
    .category-card {
        border-radius: var(--radius-md);
    }
}

/* ===== ACCESSIBILITY ENHANCEMENTS ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-primary: #000000;
        --border-secondary: #000000;
    }
    
    [data-theme="dark"] {
        --border-primary: #ffffff;
        --border-secondary: #ffffff;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    * {
        background-color: white !important;
        color: black !important;
        box-shadow: none !important;
    }
}