/* Accessibility Styles */

/* Animation Toggle Button */
.animation-toggle-btn {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.animation-toggle-btn:hover {
    color: var(--color-primary);
    background: var(--color-gray-100);
}

.animation-toggle-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* No Animations Class */
body.no-animations *,
body.no-animations *::before,
body.no-animations *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
}

/* Keyboard Focus Styles */
body.using-keyboard *:focus {
    outline: 2px solid var(--color-primary) !important;
    outline-offset: 2px !important;
}

body:not(.using-keyboard) *:focus {
    outline: none;
}

/* Focus Visible for all interactive elements */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2) var(--spacing-4);
    text-decoration: none;
    border-radius: 0 0 var(--radius-md) 0;
    z-index: 10000;
    font-weight: var(--font-weight-semibold);
}

.skip-link:focus {
    top: 0;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Keyboard Shortcuts Dialog */
.keyboard-shortcuts-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 10002;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease-out;
}

.keyboard-shortcuts-overlay.hiding {
    animation: fadeOut 0.2s ease-in forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

.keyboard-shortcuts-dialog {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.keyboard-shortcuts-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    background: var(--color-gray-50);
}

.keyboard-shortcuts-header h2 {
    margin: 0;
    font-size: var(--font-size-xl);
    color: var(--color-gray-900);
}

.close-shortcuts {
    background: none;
    border: none;
    color: var(--color-gray-600);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-shortcuts:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-900);
}

.keyboard-shortcuts-body {
    padding: var(--spacing-lg);
    max-height: calc(80vh - 100px);
    overflow-y: auto;
}

.shortcut-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-100);
}

.shortcut-item:last-child {
    border-bottom: none;
}

.shortcut-item kbd {
    background: var(--color-gray-100);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
    color: var(--color-gray-900);
    box-shadow: 0 2px 0 var(--color-gray-300);
    min-width: 120px;
    text-align: center;
}

.shortcut-item span {
    flex: 1;
    margin-left: var(--spacing-lg);
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    * {
        border-width: 2px !important;
    }
    
    button,
    a,
    input,
    select,
    textarea {
        border: 2px solid currentColor !important;
    }
}

/* Form Accessibility Improvements */
input:invalid,
select:invalid,
textarea:invalid {
    border-color: var(--color-danger-500);
}

input:valid,
select:valid,
textarea:valid {
    border-color: var(--color-success-500);
}

/* Error Message Styling */
.error-message {
    color: var(--color-danger-700);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.error-message::before {
    content: '⚠';
    font-size: var(--font-size-lg);
}

/* Required Field Indicator */
.required::after {
    content: ' *';
    color: var(--color-danger-500);
}

/* Loading State for Better Accessibility */
[aria-busy="true"] {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

[aria-busy="true"]::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Tooltip for Better Context */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-gray-900);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    white-space: nowrap;
    border-radius: var(--radius-sm);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

[data-tooltip]:hover::after,
[data-tooltip]:focus::after {
    opacity: 1;
}

/* Responsive Text Sizing */
@media (max-width: 767px) {
    .keyboard-shortcuts-dialog {
        width: 95%;
        max-height: 90vh;
    }
    
    .shortcut-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .shortcut-item kbd {
        min-width: auto;
    }
    
    .shortcut-item span {
        margin-left: 0;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .keyboard-shortcuts-overlay,
    .keyboard-shortcuts-dialog {
        animation: none !important;
    }
    
    [aria-busy="true"]::after {
        animation: none !important;
        display: none;
    }
}

/* Print Styles for Accessibility */
@media print {
    .skip-link,
    .animation-toggle-btn,
    .keyboard-shortcuts-overlay {
        display: none !important;
    }
    
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
}