/* Keyboard Navigation Styles */

/* Focus indicators - only show when using keyboard */
body:not(.keyboard-navigation) *:focus {
    outline: none;
}

body.keyboard-navigation *:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Enhanced focus styles for specific elements */
body.keyboard-navigation .video-card:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 4px;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

body.keyboard-navigation .sidebar-item:focus {
    background: var(--bg-hover);
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
}

body.keyboard-navigation button:focus,
body.keyboard-navigation .btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(var(--primary-color-rgb), 0.2);
}

body.keyboard-navigation input:focus,
body.keyboard-navigation textarea:focus,
body.keyboard-navigation select:focus {
    outline: 2px solid var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

/* Skip links for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    z-index: 9999;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 6px;
}

/* Keyboard shortcuts modal */
.shortcuts-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.shortcuts-modal.show {
    opacity: 1;
    visibility: visible;
}

.shortcuts-content {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.shortcuts-content h2 {
    margin: 0 0 1.5rem 0;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
}

.shortcuts-list {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.shortcut-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.shortcut-item:hover {
    background: var(--bg-hover);
}

.shortcut-item kbd {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    min-width: 60px;
    text-align: center;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.shortcut-item span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.close-shortcuts {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    cursor: pointer;
    width: 100%;
    transition: all 0.2s ease;
}

.close-shortcuts:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.close-shortcuts:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Video player focus states */
body.keyboard-navigation video:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 4px;
}

/* Search input focus enhancement */
body.keyboard-navigation .search-input:focus {
    outline: 2px solid var(--primary-color);
    box-shadow: 0 0 0 4px rgba(var(--primary-color-rgb), 0.1);
    border-color: var(--primary-color);
}

/* Navigation focus states */
body.keyboard-navigation .nav-item:focus {
    background: var(--bg-hover);
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
}

/* Form focus enhancements */
body.keyboard-navigation .form-group:focus-within {
    transform: translateY(-1px);
}

body.keyboard-navigation .form-group:focus-within label {
    color: var(--primary-color);
}

/* Card focus animations */
body.keyboard-navigation .card:focus {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Dropdown focus states */
body.keyboard-navigation .dropdown-item:focus {
    background: var(--primary-color);
    color: white;
    outline: none;
}

/* Tab focus states */
body.keyboard-navigation .tab:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
    background: var(--bg-hover);
}

/* Link focus states */
body.keyboard-navigation a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: 2px;
    text-decoration: underline;
}

/* Dark mode adjustments */
[data-theme="dark"] .shortcuts-content {
    background: var(--bg-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .shortcut-item kbd {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .shortcuts-modal {
    background: rgba(0, 0, 0, 0.8);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    body.keyboard-navigation *:focus {
        outline: 3px solid;
        outline-offset: 2px;
    }
    
    .shortcuts-content {
        border: 2px solid var(--text-primary);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .shortcuts-modal {
        transition: none;
    }
    
    body.keyboard-navigation .video-card:focus,
    body.keyboard-navigation .card:focus {
        transform: none;
    }
    
    .close-shortcuts:hover {
        transform: none;
    }
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .shortcuts-content {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .shortcuts-content h2 {
        font-size: 1.25rem;
    }
    
    .shortcut-item {
        gap: 0.75rem;
    }
    
    .shortcut-item kbd {
        min-width: 50px;
        font-size: 0.75rem;
    }
    
    .shortcut-item span {
        font-size: 0.85rem;
    }
    
    /* Adjust focus outlines for touch devices */
    body.keyboard-navigation *:focus {
        outline-width: 3px;
        outline-offset: 3px;
    }
}

/* Print styles */
@media print {
    .shortcuts-modal {
        display: none;
    }
    
    body.keyboard-navigation *:focus {
        outline: none;
    }
}