/**
 * SUNOSUNAO — ACCESSIBILITY SYSTEM
 * File: public_html/assets/css/accessibility.css
 *
 * PURPOSE
 * -------
 * Production accessibility layer for keyboard navigation,
 * screen readers, focus management, reduced motion, forced colors,
 * touch interaction and assistive technologies.
 *
 * ARCHITECTURE
 * ------------
 * - Depends on core.css tokens.
 * - Compatible with layout.css.
 * - Compatible with components.css.
 * - Compatible with theme.css.
 * - Compatible with responsive.css.
 * - Coordinates with animations.css.
 *
 * RULES
 * -----
 * - No story-specific content.
 * - No component visual ownership.
 * - No JavaScript dependency.
 * - Never remove keyboard focus.
 * - Respect user motion preferences.
 */

/* =========================================================
   SCREEN READER ONLY
   ========================================================= */

.a11y-sr-only,
.sr-only {
    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;
    clip-path: inset(50%) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.a11y-sr-only-focusable:focus,
.a11y-sr-only-focusable:focus-visible {
    position: fixed !important;
    top: var(--space-4);
    left: var(--space-4);
    z-index: var(--z-max);
    width: auto !important;
    height: auto !important;
    margin: 0 !important;
    padding: var(--space-3) var(--space-5) !important;
    overflow: visible !important;
    clip: auto !important;
    clip-path: none !important;
    white-space: normal !important;
}

/* =========================================================
   SKIP NAVIGATION
   ========================================================= */

.skip-link,
.skip-to-content {
    position: fixed;
    top: var(--space-4);
    left: var(--space-4);
    z-index: var(--z-max);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: var(--space-3) var(--space-5);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    background: var(--color-surface-raised);
    color: var(--color-text-primary);
    font-weight: var(--weight-semibold);
    text-decoration: none;
    transform: translateY(-180%);
    transition:
        transform var(--motion-fast) var(--ease-standard),
        background-color var(--motion-fast) var(--ease-standard),
        color var(--motion-fast) var(--ease-standard);
}

.skip-link:focus,
.skip-link:focus-visible,
.skip-to-content:focus,
.skip-to-content:focus-visible {
    transform: translateY(0);
}

/* =========================================================
   GLOBAL KEYBOARD FOCUS
   ========================================================= */

a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus,
summary:focus,
[tabindex]:not([tabindex="-1"]):focus {
    outline: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:not([tabindex="-1"]):focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

/* =========================================================
   FOCUS WITHIN
   ========================================================= */

.search-field:focus-within,
.cinematic-search:focus-within,
.search-bar:focus-within,
.site-search:focus-within,
.audio-player:focus-within,
.audio-cinema:focus-within,
.story-card:focus-within,
.story-tile:focus-within,
.portrait-story-card:focus-within,
.modal:focus-within,
.drawer:focus-within {
    outline: none;
}

/* =========================================================
   INTERACTIVE TARGETS
   ========================================================= */

.a11y-target {
    min-width: 44px;
    min-height: 44px;
}

.a11y-target-inline {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

/* =========================================================
   VISUALLY HIDDEN DECORATIVE CONTENT
   ========================================================= */

[aria-hidden="true"] {
    pointer-events: none;
}

[hidden] {
    display: none !important;
}

/* =========================================================
   INVALID / ERROR STATES
   ========================================================= */

[aria-invalid="true"] {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

[aria-disabled="true"] {
    cursor: not-allowed;
}

[aria-disabled="true"]:focus-visible {
    outline-style: dashed;
}

/* =========================================================
   EXPANDED / COLLAPSED STATES
   ========================================================= */

[aria-expanded="false"] + [data-collapsible-content] {
    display: none;
}

[aria-expanded="true"] + [data-collapsible-content] {
    display: block;
}

/* =========================================================
   LIVE REGIONS
   ========================================================= */

[aria-live] {
    isolation: isolate;
}

/* =========================================================
   KEYBOARD NAVIGATION HELPERS
   ========================================================= */

.a11y-focus-zone {
    scroll-margin-top: calc(var(--header-height) + var(--space-6));
}

.a11y-focus-zone:focus,
.a11y-focus-zone:focus-visible {
    outline: none;
}

/* =========================================================
   REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto !important;
    }

    [data-motion],
    [data-reveal],
    [data-image-reveal],
    [data-stagger] > * {
        opacity: 1 !important;
        transform: none !important;
        filter: none !important;
    }

    .hero__backdrop,
    .story-card__media,
    .story-tile__media,
    .portrait-story-card__media {
        transform: none !important;
    }
}

/* =========================================================
   HIGH CONTRAST / FORCED COLORS
   ========================================================= */

@media (forced-colors: active) {
        a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    summary:focus-visible,
    [tabindex]:not([tabindex="-1"]):focus-visible {
        outline: 2px solid Highlight;
        outline-offset: 3px;
    }

    .skip-link,
    .skip-to-content {
        border: 1px solid ButtonText;
        background: Canvas;
        color: ButtonText;
    }

    .button,
    .btn,
    button {
        border: 1px solid ButtonText;
    }

    .story-card,
    .story-tile,
    .portrait-story-card,
    .surface,
    .surface-soft,
    .surface-raised {
        border: 1px solid CanvasText;
    }
}

/* =========================================================
   POINTER / TOUCH ACCESSIBILITY
   ========================================================= */

@media (pointer: coarse) {
        button,
    .button,
    .btn,
    a[role="button"],
    input[type="button"],
    input[type="submit"],
    input[type="reset"] {
        min-height: 44px;
    }

        .icon-button,
    .site-header__mobile-toggle,
    .audio-player__control {
        min-width: 44px;
        min-height: 44px;
    }
}

/* =========================================================
   TEXT SPACING SUPPORT
   ========================================================= */

.a11y-readable {
    max-width: 75ch;
}

.a11y-readable p {
    line-height: 1.6;
}

.a11y-readable li {
    line-height: 1.6;
}

/* =========================================================
   TEXT ALIGNMENT
   ========================================================= */

.a11y-visually-clear {
    text-rendering: optimizeLegibility;
}

/* =========================================================
   MOTION TOGGLE SUPPORT
   ========================================================= */

html[data-reduced-motion="true"] *,
html[data-reduced-motion="true"] *::before,
html[data-reduced-motion="true"] *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
}

html[data-reduced-motion="true"] [data-motion],
html[data-reduced-motion="true"] [data-reveal],
html[data-reduced-motion="true"] [data-image-reveal],
html[data-reduced-motion="true"] [data-stagger] > * {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
}

/* =========================================================
   COLOR CONTRAST SAFE TEXT
   ========================================================= */

.a11y-text-primary {
    color: var(--color-text-primary);
}

.a11y-text-secondary {
    color: var(--color-text-secondary);
}

.a11y-text-muted {
    color: var(--color-text-muted);
}

/* =========================================================
   STATUS ANNOUNCEMENT
   ========================================================= */

.a11y-status {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

/* =========================================================
   FORM ACCESSIBILITY
   ========================================================= */

label {
    cursor: pointer;
}

input:disabled,
select:disabled,
textarea:disabled,
button:disabled {
    cursor: not-allowed;
}

/* =========================================================
   READING ACCESSIBILITY
   ========================================================= */

.reading-content p,
.reading-content li,
.reading-content blockquote {
    overflow-wrap: break-word;
}

.reading-content a {
}

/* =========================================================
   PRINT
   ========================================================= */

@media print {
    .skip-link,
    .skip-to-content,
    .a11y-sr-only,
    .a11y-status {
        display: none;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    summary:focus-visible,
    [tabindex]:not([tabindex="-1"]):focus-visible {
        outline: none;
    }
}