/**
 * THEME COMPATIBILITY SYSTEM - Sri Dutta Sai Manga Bharadwaja Trust
 * Comprehensive light/dark mode compatibility with manual theme switching
 * 
 * @version 1.0.0
 * @priority CRITICAL - Fixes readability issues
 */

/* =================================================================
   LIGHT MODE FORCED COMPATIBILITY
   ================================================================= */

/* Override dark theme for light mode systems */
@media (prefers-color-scheme: light) {
    :root {
        /* Force light mode colors */
        --color-background: #fcfcf9 !important;
        --color-surface: #ffffff !important;
        --color-text: #133c3b !important;
        --color-text-secondary: #626c6c !important;
        --color-border: rgba(94, 82, 64, 0.2) !important;
        --color-primary: #21808d !important;
        --color-primary-hover: #1d7480 !important;
        --color-primary-active: #1a6670 !important;
        
        /* Update RGB versions */
        --color-text-rgb: 19, 52, 59;
        --color-primary-rgb: 33, 128, 141;
        --color-surface-rgb: 255, 255, 255;
    }
    
    /* Ensure all critical text elements are readable */
    body, 
    h1, h2, h3, h4, h5, h6, 
    p, span, div, a, li, td, th,
    .nav-link, .footer-links a,
    .section-title, .section-subtitle {
        color: var(--color-text) !important;
    }
    
    /* Form elements readability */
    input, select, textarea {
        background: var(--color-surface) !important;
        color: var(--color-text) !important;
        border-color: var(--color-border) !important;
    }
    
    input::placeholder {
        color: var(--color-text-secondary) !important;
    }
    
    /* Button fixes */
    .btn-outline {
        color: var(--color-primary) !important;
        border-color: var(--color-primary) !important;
    }
    
    .btn-outline:hover {
        background: var(--color-primary) !important;
        color: var(--color-surface) !important;
    }
    
    /* Navigation specific fixes */
    .header, .navbar {
        background: var(--color-surface) !important;
        border-bottom: 1px solid var(--color-border) !important;
    }
    
    .nav-link {
        color: var(--color-text) !important;
    }
    
    .nav-link:hover, .nav-link.active {
        color: var(--color-primary) !important;
    }
    
    /* Card and surface fixes */
    .card, .dashboard-card, .service-card {
        background: var(--color-surface) !important;
        border-color: var(--color-border) !important;
    }
    
    /* Footer remains dark for contrast */
    .footer {
        background: #1f3433 !important;
        color: #a7a9a9 !important;
    }
    
    .footer h3 {
        color: #fcfcf9 !important;
    }
    
    .footer-links a {
        color: #a7a9a9 !important;
    }
    
    .footer-links a:hover {
        color: var(--color-primary) !important;
    }
}

/* =================================================================
   DARK MODE ENHANCEMENTS
   ================================================================= */

@media (prefers-color-scheme: dark) {
    :root {
        /* Enhanced dark mode colors */
        --color-background: #1f2121 !important;
        --color-surface: #262828 !important;
        --color-text: #f5f5f5 !important;
        --color-text-secondary: rgba(167, 169, 169, 0.8) !important;
        --color-border: rgba(119, 124, 124, 0.3) !important;
        --color-primary: #32b8c6 !important;
        --color-primary-hover: #2da6b2 !important;
        --color-primary-active: #28949f !important;
    }
    
    /* Better contrast for dark mode */
    .btn-primary {
        background: var(--color-primary) !important;
        color: #1f2121 !important;
    }
    
    .btn-outline {
        border-color: var(--color-border) !important;
        color: var(--color-text) !important;
    }
    
    .btn-outline:hover {
        background: var(--color-secondary) !important;
        color: var(--color-text) !important;
    }
}

/* =================================================================
   MANUAL THEME SWITCHING SYSTEM
   ================================================================= */

/* Theme toggle button */
.theme-toggle {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1000;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.theme-toggle i {
    font-size: 1.2rem;
    color: var(--color-text);
    transition: transform 0.3s ease;
}

.theme-toggle:hover i {
    transform: rotate(180deg);
}

/* Manual theme overrides */
[data-theme="light"] {
    --color-background: #fcfcf9;
    --color-surface: #ffffff;
    --color-text: #133c3b;
    --color-text-secondary: #626c6c;
    --color-border: rgba(94, 82, 64, 0.2);
    --color-primary: #21808d;
    --color-primary-hover: #1d7480;
    --color-primary-active: #1a6670;
}

[data-theme="dark"] {
    --color-background: #1f2121;
    --color-surface: #262828;
    --color-text: #f5f5f5;
    --color-text-secondary: rgba(167, 169, 169, 0.8);
    --color-border: rgba(119, 124, 124, 0.3);
    --color-primary: #32b8c6;
    --color-primary-hover: #2da6b2;
    --color-primary-active: #28949f;
}

/* Force theme colors regardless of system preference */
[data-theme="light"] body,
[data-theme="light"] h1, [data-theme="light"] h2, [data-theme="light"] h3,
[data-theme="light"] h4, [data-theme="light"] h5, [data-theme="light"] h6,
[data-theme="light"] p, [data-theme="light"] span, [data-theme="light"] div,
[data-theme="light"] a, [data-theme="light"] li {
    color: var(--color-text) !important;
}

[data-theme="dark"] body,
[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3,
[data-theme="dark"] h4, [data-theme="dark"] h5, [data-theme="dark"] h6,
[data-theme="dark"] p, [data-theme="dark"] span, [data-theme="dark"] div,
[data-theme="dark"] a, [data-theme="dark"] li {
    color: var(--color-text) !important;
}

/* =================================================================
   MOBILE RESPONSIVE IMPROVEMENTS
   ================================================================= */

@media (max-width: 768px) {
    .theme-toggle {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
    }
    
    .theme-toggle i {
        font-size: 1rem;
    }
    
    /* Mobile navigation improvements */
    .hamburger {
        display: flex;
        flex-direction: column;
        justify-content: center;
        width: 30px;
        height: 30px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0;
    }
    
    .hamburger span {
        width: 100%;
        height: 3px;
        background: var(--color-text);
        margin: 2px 0;
        transition: all 0.3s ease;
        border-radius: 2px;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    /* Mobile menu enhancements */
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-surface);
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-100vh);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        border-top: 1px solid var(--color-border);
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-actions {
        margin-left: 0;
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
    }
    
    .nav-actions .btn {
        width: 100%;
        text-align: center;
        justify-content: center;
        padding: 0.75rem 1rem;
        min-height: 44px; /* Touch target */
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .logo-text {
        font-size: 0.8rem;
        max-width: 120px;
        line-height: 1.2;
    }
    
    .logo-img {
        width: 30px;
        height: 30px;
    }
    
    .container {
        padding: 0 0.5rem;
    }
    
    /* Form improvements */
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; /* Prevent zoom on iOS */
        padding: 0.75rem;
    }
    
    .btn {
        min-height: 44px;
        padding: 0.75rem 1rem;
    }
    
    .btn-large {
        min-height: 48px;
        padding: 1rem 1.25rem;
    }
}

/* =================================================================
   ACCESSIBILITY ENHANCEMENTS
   ================================================================= */

/* Focus improvements */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

.btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb, 33, 128, 141), 0.3);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-border: currentColor;
    }
    
    .btn-outline {
        border-width: 2px;
    }
    
    input, select, textarea {
        border-width: 2px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .theme-toggle:hover i {
        transform: none;
    }
}

/* =================================================================
   PRINT STYLES
   ================================================================= */

@media print {
    .theme-toggle,
    .hamburger {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    * {
        color: black !important;
        background: white !important;
    }
}

/* =================================================================
   UTILITY CLASSES
   ================================================================= */

.force-readable {
    color: var(--color-text) !important;
    background: var(--color-surface) !important;
}

.theme-transition {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Mobile utilities */
@media (max-width: 768px) {
    .mobile-stack {
        flex-direction: column !important;
    }
    
    .mobile-full-width {
        width: 100% !important;
    }
    
    .mobile-hidden {
        display: none !important;
    }
    
    .mobile-text-center {
        text-align: center !important;
    }
}