/**
 * Quiz dos Livros da Bíblia - Themes
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 */

/* Dark Theme */
[data-theme="dark"] {
    /* Dark theme colors */
    --primary-color: #4A90E2;
    --secondary-color: #2C3E50;
    --accent-color: #34495E;
    --surface-color: #1E1E1E;
    --text-color: #FFFFFF;
    
    /* Automatic variations for dark theme */
    --primary-hover: #357ABD;
    --primary-light: #5BA0F2;
    --bg-color: #121212;
    --text-muted: #B0B0B0;
    --text-secondary: #CCCCCC;
    
    /* Semantic colors for dark theme */
    --success-color: #27AE60;
    --error-color: #E74C3C;
    --warning-color: #F39C12;
    --info-color: #3498DB;
    
    /* Shadows for dark theme */
    --shadow: 0 2px 10px rgba(0,0,0,0.3);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.4);
}

/* Auto theme - follows system preference */
@media (prefers-color-scheme: dark) {
    [data-theme="auto"] {
        /* Dark theme colors */
        --primary-color: #4A90E2;
        --secondary-color: #2C3E50;
        --accent-color: #34495E;
        --surface-color: #1E1E1E;
        --text-color: #FFFFFF;
        
        /* Automatic variations for dark theme */
        --primary-hover: #357ABD;
        --primary-light: #5BA0F2;
        --bg-color: #121212;
        --text-muted: #B0B0B0;
        --text-secondary: #CCCCCC;
        
        /* Semantic colors for dark theme */
        --success-color: #27AE60;
        --error-color: #E74C3C;
        --warning-color: #F39C12;
        --info-color: #3498DB;
        
        /* Shadows for dark theme */
        --shadow: 0 2px 10px rgba(0,0,0,0.3);
        --shadow-hover: 0 4px 20px rgba(0,0,0,0.4);
    }
}

/* Light theme (default) */
[data-theme="light"] {
    /* Original light theme colors */
    --primary-color: #FDFFF5;
    --secondary-color: #FEFEFE;
    --accent-color: #F5F5DC;
    --surface-color: #FAF0E6;
    --text-color: #2C3E50;
    
    /* Automatic variations */
    --primary-hover: #F0F8E8;
    --primary-light: #FFFFFF;
    --bg-color: #ffffff;
    --text-muted: #6C757D;
    --text-secondary: #495057;
    
    /* Semantic colors */
    --success-color: #28a745;
    --error-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    
    /* Shadows */
    --shadow: 0 2px 10px rgba(0,0,0,0.08);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.12);
}

/* Theme transition animations */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Dark theme specific adjustments */
[data-theme="dark"] .hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

[data-theme="dark"] .search-input {
    background: var(--surface-color);
    color: var(--text-color);
    border-color: var(--accent-color);
}

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

[data-theme="dark"] .answer-btn {
    background: var(--surface-color);
    border-color: var(--accent-color);
    color: var(--text-color);
}

[data-theme="dark"] .answer-btn:hover {
    background: var(--accent-color);
}

[data-theme="dark"] .skeleton {
    background: linear-gradient(90deg, #2a2a2a 25%, #3a3a3a 50%, #2a2a2a 75%);
    background-size: 200% 100%;
    animation: skeleton-loading-dark 1.5s infinite;
}

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

/* Auto theme media query adjustments */
@media (prefers-color-scheme: dark) {
    [data-theme="auto"] .hero-section {
        background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    }

    [data-theme="auto"] .search-input {
        background: var(--surface-color);
        color: var(--text-color);
        border-color: var(--accent-color);
    }

    [data-theme="auto"] .search-input::placeholder {
        color: var(--text-muted);
    }

    [data-theme="auto"] .answer-btn {
        background: var(--surface-color);
        border-color: var(--accent-color);
        color: var(--text-color);
    }

    [data-theme="auto"] .answer-btn:hover {
        background: var(--accent-color);
    }

    [data-theme="auto"] .skeleton {
        background: linear-gradient(90deg, #2a2a2a 25%, #3a3a3a 50%, #2a2a2a 75%);
        background-size: 200% 100%;
        animation: skeleton-loading-dark 1.5s infinite;
    }
}

/* Theme toggle button states */
.theme-toggle-icon {
    transition: transform 0.3s ease;
}

[data-theme="dark"] .theme-toggle-icon {
    transform: rotate(180deg);
}

/* Improved contrast for dark theme */
[data-theme="dark"] .book-order {
    background: var(--primary-color);
    color: var(--bg-color);
}

[data-theme="dark"] .book-testament,
[data-theme="dark"] .book-category {
    background: var(--accent-color);
    color: var(--text-color);
}

[data-theme="dark"] .level-badge {
    background: var(--primary-color);
    color: var(--bg-color);
}

[data-theme="dark"] .nav-item-fab {
    background: var(--primary-color);
    color: var(--bg-color);
}

[data-theme="dark"] .toast {
    background: var(--surface-color);
    color: var(--text-color);
    border: 1px solid var(--accent-color);
}

/* Auto theme contrast adjustments */
@media (prefers-color-scheme: dark) {
    [data-theme="auto"] .book-order {
        background: var(--primary-color);
        color: var(--bg-color);
    }

    [data-theme="auto"] .book-testament,
    [data-theme="auto"] .book-category {
        background: var(--accent-color);
        color: var(--text-color);
    }

    [data-theme="auto"] .level-badge {
        background: var(--primary-color);
        color: var(--bg-color);
    }

    [data-theme="auto"] .nav-item-fab {
        background: var(--primary-color);
        color: var(--bg-color);
    }

    [data-theme="auto"] .toast {
        background: var(--surface-color);
        color: var(--text-color);
        border: 1px solid var(--accent-color);
    }
}

/* High contrast mode for accessibility */
@media (prefers-contrast: high) {
    [data-theme="dark"] {
        --bg-color: #000000;
        --text-color: #FFFFFF;
        --surface-color: #1A1A1A;
        --accent-color: #404040;
        --primary-color: #0080FF;
    }
    
    [data-theme="light"] {
        --bg-color: #FFFFFF;
        --text-color: #000000;
        --surface-color: #F8F8F8;
        --accent-color: #E0E0E0;
        --primary-color: #0066CC;
    }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    [data-theme="dark"] *,
    [data-theme="light"] *,
    [data-theme="auto"] * {
        transition-duration: 0.01ms !important;
    }
}

/* Theme-specific focus indicators */
[data-theme="dark"] button:focus,
[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] .nav-link:focus,
[data-theme="dark"] .nav-item:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles - force light theme */
@media print {
    * {
        --bg-color: white !important;
        --text-color: black !important;
        --surface-color: white !important;
        --primary-color: #0066CC !important;
        --shadow: none !important;
        --shadow-hover: none !important;
    }
    
    .bottom-nav,
    .app-header,
    .theme-toggle,
    .quiz-timer {
        display: none !important;
    }
}