/**
 * Flavor Accessibility - Frontend Styles
 * Version 1.0.0
 */

/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
    --flavor-a11y-focus: #005fcc;
    --flavor-a11y-focus-offset: 2px;
    --flavor-a11y-focus-width: 3px;
}

/* ========================================
   Skip Link
   ======================================== */
.flavor-a11y-skip-link {
    position: fixed;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999999;
    padding: 12px 24px;
    background: var(--flavor-a11y-focus);
    color: #fff !important;
    text-decoration: none !important;
    font-size: 16px;
    font-weight: 600;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: top 0.2s ease;
}

.flavor-a11y-skip-link:focus {
    top: 0;
    outline: none;
}

/* ========================================
   Focus Styles (keyboard only)
   ======================================== */

/* Remove default outline for mouse users */
.flavor-a11y-using-mouse *:focus {
    outline: none;
}

/* Enhanced focus for keyboard users */
.flavor-a11y-using-keyboard *:focus {
    outline: var(--flavor-a11y-focus-width) solid var(--flavor-a11y-focus) !important;
    outline-offset: var(--flavor-a11y-focus-offset) !important;
}

/* Special focus styles for specific elements */
.flavor-a11y-using-keyboard a:focus,
.flavor-a11y-using-keyboard button:focus,
.flavor-a11y-using-keyboard input:focus,
.flavor-a11y-using-keyboard select:focus,
.flavor-a11y-using-keyboard textarea:focus,
.flavor-a11y-using-keyboard [tabindex]:focus {
    outline: var(--flavor-a11y-focus-width) solid var(--flavor-a11y-focus) !important;
    outline-offset: var(--flavor-a11y-focus-offset) !important;
    box-shadow: 0 0 0 4px rgba(0, 95, 204, 0.2);
}

/* Focus within for dropdowns */
.flavor-a11y-using-keyboard .menu-item-has-children:focus-within > .sub-menu,
.flavor-a11y-using-keyboard .has-dropdown:focus-within > .dropdown-menu {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* ========================================
   Empty Buttons - Completely Hidden
   ======================================== */

/* Leere Buttons komplett ausblenden */
button[aria-hidden="true"],
a.fl-btn[aria-hidden="true"],
a[class*="btn"][aria-hidden="true"] {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    margin: -1px !important;
    padding: 0 !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* ========================================
   Screen Reader Only Content
   ======================================== */
.flavor-a11y-sr-only,
.screen-reader-text {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Make screen reader text visible on focus */
.flavor-a11y-sr-only:focus,
.screen-reader-text:focus {
    position: static !important;
    width: auto !important;
    height: auto !important;
    padding: 8px 16px !important;
    margin: 0 !important;
    overflow: visible !important;
    clip: auto !important;
    white-space: normal !important;
    background: var(--flavor-a11y-focus);
    color: #fff;
}

/* ========================================
   External Link Indicator
   ======================================== */
a[target="_blank"]::after,
a.flavor-a11y-external::after {
    content: " ↗";
    font-size: 0.8em;
    vertical-align: super;
}

/* Don't show indicator for images/icons */
a[target="_blank"]:has(> img)::after,
a[target="_blank"]:has(> svg)::after,
a.flavor-a11y-external:has(> img)::after {
    content: none;
}

/* ========================================
   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;
    }
    
    .flavor-a11y-skip-link {
        transition: none;
    }
}

/* ========================================
   Text Resize Support
   ======================================== */
html {
    font-size: 100%; /* Allows browser zoom to work properly */
}

/* Ensure containers don't break at 200% zoom */
body {
    overflow-x: auto;
}

/* ========================================
   High Contrast Support
   ======================================== */
@media (prefers-contrast: high) {
    .flavor-a11y-skip-link,
    .flavor-a11y-using-keyboard *:focus {
        outline-width: 4px !important;
        outline-style: solid !important;
    }
    
    a {
        text-decoration: underline !important;
    }
}

/* ========================================
   Forced Colors Mode (Windows High Contrast)
   ======================================== */
@media (forced-colors: active) {
    .flavor-a11y-skip-link {
        border: 2px solid currentColor;
    }
    
    *:focus {
        outline: 3px solid currentColor !important;
    }
}

/* ========================================
   Focus Visible Polyfill
   ======================================== */
.js-focus-visible :focus:not(.focus-visible) {
    outline: none;
}

.js-focus-visible .focus-visible {
    outline: var(--flavor-a11y-focus-width) solid var(--flavor-a11y-focus) !important;
    outline-offset: var(--flavor-a11y-focus-offset) !important;
}

/* ========================================
   Menu ARIA Enhancements
   ======================================== */

/* Ensure submenus are hidden by default but accessible */
[role="menu"] {
    /* Let theme handle visibility, but ensure it's not display:none for screen readers */
}

/* Visual indicator for expanded menus */
[aria-expanded="true"] > .sub-menu,
[aria-expanded="true"] > .dropdown-menu,
[aria-expanded="true"] + .sub-menu,
[aria-expanded="true"] + .dropdown-menu {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* ========================================
   Link Purpose Clarity
   ======================================== */

/* Style for "opens in new window" links */
a[data-a11y-new-window]::after {
    content: " (öffnet neues Fenster)";
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========================================
   Form Accessibility
   ======================================== */

/* Required field indicator */
[aria-required="true"],
input:required,
select:required,
textarea:required {
    /* Visual indicator via pseudo-element on label */
}

/* Error state */
[aria-invalid="true"] {
    border-color: #dc2626 !important;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2) !important;
}

/* ========================================
   Touch Target Size (WCAG 2.5.5)
   ======================================== */
@media (pointer: coarse) {
    a,
    button,
    input[type="checkbox"],
    input[type="radio"],
    input[type="submit"],
    input[type="button"],
    select,
    [role="button"],
    [role="link"],
    [role="menuitem"] {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Ensure adequate spacing between touch targets */
    nav a,
    .menu a,
    .nav a {
        padding: 12px 16px;
    }
}

/* ========================================
   Animation Control Button (optional)
   ======================================== */
.flavor-a11y-motion-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    padding: 10px 16px;
    background: #fff;
    border: 2px solid #333;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    display: none; /* Enable via JS if needed */
}

.flavor-a11y-motion-toggle:hover {
    background: #f0f0f0;
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .flavor-a11y-skip-link,
    .flavor-a11y-motion-toggle {
        display: none !important;
    }
    
    a[href^="http"]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }
}