/**
 * Accessibility Improvements
 * Ensures WCAG AA compliance and better user experience for all users
 */

/* High Contrast Focus Indicators */
*:focus-visible {
    outline: 3px solid #6b97c4;
    outline-offset: 2px;
    transition: outline 0.2s ease;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid #6b97c4;
    outline-offset: 2px;
}

/* Skip to Main Content Link */
.skip-to-main {
    position: fixed;
    top: -100px;
    left: 1rem;
    z-index: 9999;
    background: #ffffff;
    color: #1f344d;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transition: top 0.3s ease;
}

.skip-to-main:focus {
    top: 1rem;
    outline: 3px solid #6b97c4;
}

[dir="rtl"] .skip-to-main {
    left: auto;
    right: 1rem;
}

/* Screen Reader Only Content */
.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;
}

.sr-only-focusable:focus,
.sr-only-focusable:active {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Enhanced Color Contrast for Text */
/* Ensuring WCAG AA (4.5:1 for normal text, 3:1 for large text) */

.text-muted,
.text-ink-muted {
    color: #5f6c80 !important; /* Improved from #667085 for better contrast */
}

.text-secondary {
    color: #4a5568 !important; /* Darker for better contrast */
}

/* Button Minimum Touch Target (44x44px for WCAG) */
button,
a[role="button"],
input[type="submit"],
input[type="button"],
.btn {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Exception for icon-only buttons with proper spacing */
button.btn-icon,
.action-btn {
    min-width: 44px;
    min-height: 44px;
}

/* Link Underlines for Better Recognition */
.prose a:not([class*="btn"]),
article a:not([class*="btn"]) {
    text-decoration: underline;
    text-decoration-color: rgba(107, 151, 196, 0.4);
    text-underline-offset: 2px;
}

.prose a:hover:not([class*="btn"]),
article a:hover:not([class*="btn"]) {
    text-decoration-color: #6b97c4;
}

/* Form Labels Always Visible */
label {
    display: block;
    margin-bottom: 0.375rem;
    font-weight: 600;
    color: #1f344d;
}

/* ARIA Live Regions Styling */
[aria-live="polite"],
[aria-live="assertive"] {
    position: relative;
}

/* Error Messages with Icons for Visual Clarity */
.error-message,
.form-error,
[role="alert"].error {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    color: #dc2626;
    background-color: #fef2f2;
    border: 2px solid #fca5a5;
    border-radius: 0.5rem;
    padding: 0.75rem;
    margin-top: 0.5rem;
}

.error-message::before,
.form-error::before,
[role="alert"].error::before {
    content: '⚠';
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* Success Messages */
.success-message,
[role="alert"].success {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    color: #047857;
    background-color: #f0fdf4;
    border: 2px solid #86efac;
    border-radius: 0.5rem;
    padding: 0.75rem;
    margin-top: 0.5rem;
}

.success-message::before,
[role="alert"].success::before {
    content: '✓';
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* Loading State Announcements */
[aria-busy="true"] {
    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 #6b97c4;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Disabled State Clear Indication */
button:disabled,
input:disabled,
select:disabled,
textarea:disabled,
[aria-disabled="true"] {
    opacity: 0.6;
    cursor: not-allowed;
    position: relative;
}

button:disabled::after,
[aria-disabled="true"]::after {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(0, 0, 0, 0.03) 10px,
        rgba(0, 0, 0, 0.03) 20px
    );
    pointer-events: none;
}

/* Table Accessibility */
table {
    border-collapse: collapse;
    width: 100%;
}

th {
    text-align: inherit;
    font-weight: 700;
}

caption {
    caption-side: top;
    text-align: inherit;
    padding: 0.75rem;
    font-weight: 700;
    color: #1f344d;
}

/* Modal Dialog Accessibility — exclude fullscreen / drawer dialogs with their own layout */
[role="dialog"]:not(#desktopPlayerModal):not(.mobile-navigation),
.modal:not(.desktop-player-modal) {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
}

[role="dialog"][aria-hidden="true"]:not(#desktopPlayerModal),
.modal[aria-hidden="true"]:not(.desktop-player-modal) {
    display: none;
}

/* Fullscreen cartoons player modal: visibility handled in cartoons-explode.css */
#desktopPlayerModal.desktop-player-modal[aria-hidden="true"] {
    display: flex;
}

/* Improved Card Contrast */
.card,
.glass-card {
    background-color: #ffffff;
    border: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    * {
        border-color: currentColor !important;
    }
    
    button,
    input,
    select,
    textarea {
        border: 2px solid currentColor !important;
    }
    
    :focus-visible {
        outline-width: 4px !important;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    /* Keep essential loading indicators */
    .btn-loading .btn-spinner,
    .page-loading-spinner,
    [aria-busy="true"]::after {
        animation-duration: 0.8s !important;
    }
}

/* Color Blind Friendly Patterns */
.status-success,
.badge-success {
    background-color: #10b981;
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 5px,
        rgba(255, 255, 255, 0.1) 5px,
        rgba(255, 255, 255, 0.1) 10px
    );
}

.status-error,
.badge-error {
    background-color: #ef4444;
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 5px,
        rgba(255, 255, 255, 0.1) 5px,
        rgba(255, 255, 255, 0.1) 10px
    );
}

.status-warning,
.badge-warning {
    background-color: #f59e0b;
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 5px,
        rgba(255, 255, 255, 0.1) 5px,
        rgba(255, 255, 255, 0.1) 10px
    );
}

/* Keyboard Navigation Improvements */
a:focus-visible,
button:focus-visible {
    box-shadow: 0 0 0 3px rgba(107, 151, 196, 0.4);
}

/* Current Page Indication — visual state handled by .nav-link.active / .mobile-nav-link.active */
[aria-current="page"] {
    font-weight: 700;
}

/* Text Spacing for Readability */
p,
li,
td,
th {
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    margin-bottom: 0.75em;
}

/* Enhanced Link Recognition — underline only inside long-form article prose */
.blog-prose a:not([class*="btn"]):not(.no-underline) {
    color: #2563eb;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

.blog-prose a:not([class*="btn"]):not(.no-underline):hover {
    color: #1d4ed8;
    text-decoration-thickness: 2px;
}

a:not([class*="btn"]):not(.no-underline):focus-visible {
    outline: 3px solid #6b97c4;
    outline-offset: 2px;
    background-color: rgba(107, 151, 196, 0.1);
}

/* Form Input States */
input[aria-invalid="true"],
textarea[aria-invalid="true"],
select[aria-invalid="true"] {
    border-color: #ef4444 !important;
    border-width: 2px !important;
}

input[aria-invalid="false"],
textarea[aria-invalid="false"],
select[aria-invalid="false"] {
    border-color: #10b981 !important;
}

/* Image Alt Text Fallback */
img:not([alt]) {
    border: 3px dashed #ef4444;
}

img[alt=""] {
    /* Decorative images - no border needed */
}

/* List Improvements */
ul:not([class]),
ol:not([class]) {
    padding-inline-start: 1.5rem;
    margin-bottom: 1rem;
}

ul:not([class]) li,
ol:not([class]) li {
    margin-bottom: 0.5rem;
}

/* Better Contrast for Primary Colors */
.bg-primary {
    background-color: #5a7fa8 !important; /* Darker for better contrast */
}

.text-primary {
    color: #4a6f98 !important; /* Darker for better contrast */
}

/* Icon with Text - Proper Spacing */
.icon-text {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Status Indicators with Text + Icon */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
}

.status-indicator::before {
    content: '';
    display: block;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background-color: currentColor;
}

/* Print Styles for Accessibility */
@media print {
    .no-print,
    nav,
    aside,
    button,
    [role="navigation"] {
        display: none !important;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.875em;
        color: #4a5568;
    }
    
    a[href^="#"]::after,
    a[href^="javascript:"]::after {
        content: "";
    }
}

/* Dark Mode Contrast (if implemented) */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f3f4f6;
        --text-secondary: #d1d5db;
        --bg-primary: #1f2937;
        --bg-secondary: #111827;
    }
}