/**
 * TAMUK Foundation Accessibility Styles
 *
 * WCAG 2.1 AA compliance utilities and styles.
 * Skip links, focus management, screen reader helpers.
 */

/* ===========================
   Skip Link
   =========================== */

.skip-link {
	position: fixed;
	top: -100px;
	left: var(--space-4);
	z-index: var(--z-skip);
	padding: var(--space-3) var(--space-6);
	background-color: var(--tamuk-blue);
	color: var(--tamuk-white);
	font-weight: var(--weight-bold);
	font-size: var(--text-base);
	text-decoration: none;
	border-radius: 0 0 var(--radius-md) var(--radius-md);
	box-shadow: var(--shadow-lg);
	transition: top var(--transition-fast);
}

.skip-link:focus {
	top: 0;
	outline: var(--focus-ring-style);
	outline-offset: var(--focus-ring-offset);
}

/* ===========================
   Screen Reader Only
   =========================== */

.screen-reader-text,
.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* Allow element to become visible on focus (e.g., skip links) */
.screen-reader-text:focus,
.sr-only-focusable:focus {
	position: fixed;
	width: auto;
	height: auto;
	padding: var(--space-3) var(--space-6);
	margin: 0;
	overflow: visible;
	clip: auto;
	white-space: normal;
	z-index: var(--z-skip);
}

/* ===========================
   Focus Indicators
   =========================== */

/* Global focus-visible styles */
:focus-visible {
	outline: var(--focus-ring-style);
	outline-offset: var(--focus-ring-offset);
}

/* Remove default outline for mouse users */
:focus:not(:focus-visible) {
	outline: none;
}

/* High-contrast focus for dark backgrounds */
.site-footer :focus-visible,
.utility-nav :focus-visible,
.stats-bar :focus-visible,
[class*="bg-dark"] :focus-visible {
	outline-color: var(--tamuk-gold);
}

/* Focus within for dropdown containers */
.menu-item-has-children:focus-within > .sub-menu {
	display: block;
}

/* ===========================
   Reduced Motion
   =========================== */

@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;
	}

	/* Stop autoplay videos */
	video[autoplay] {
		animation: none;
	}
}

/* ===========================
   High Contrast Mode Support
   =========================== */

@media (forced-colors: active) {
	.btn,
	.btn-primary,
	.btn-secondary,
	.btn-accent {
		border: 2px solid ButtonText;
	}

	.skip-link:focus {
		background-color: Highlight;
		color: HighlightText;
	}

	.card {
		border: 1px solid CanvasText;
	}
}

/* ===========================
   ARIA Live Regions
   =========================== */

[aria-live="polite"],
[aria-live="assertive"] {
	/* Ensure live regions are positioned but may be visually hidden */
}

.aria-live-status {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* Visible status messages (for forms, etc.) */
.status-message {
	padding: var(--space-3) var(--space-4);
	border-radius: var(--radius-md);
	font-weight: var(--weight-medium);
	margin-bottom: var(--space-4);
}

.status-message--success {
	background-color: #ECFDF5;
	color: #065F46;
	border: var(--border-width) solid #A7F3D0;
}

.status-message--error {
	background-color: #FEF2F2;
	color: #991B1B;
	border: var(--border-width) solid #FECACA;
}

.status-message--info {
	background-color: var(--tamuk-blue-lightest);
	color: var(--tamuk-blue);
	border: var(--border-width) solid #93C5FD;
}

.status-message--warning {
	background-color: #FFFBEB;
	color: #92400E;
	border: var(--border-width) solid #FDE68A;
}

/* ===========================
   Form Validation Indicators
   =========================== */

.field-error {
	border-color: var(--color-error) !important;
}

.field-success {
	border-color: var(--color-success) !important;
}

.error-message {
	color: var(--color-error);
	font-size: var(--text-sm);
	margin-top: var(--space-1);
}

.error-message[role="alert"] {
	font-weight: var(--weight-medium);
}

/* Required field indicators */
.required-indicator {
	color: var(--color-error);
	margin-left: var(--space-1);
}

/* Help text below form fields */
.field-help {
	font-size: var(--text-sm);
	color: var(--color-text-muted);
	margin-top: var(--space-1);
}

/* ===========================
   Keyboard Navigation Helpers
   =========================== */

/* Visible indicator for current dropdown */
.menu-item-has-children[aria-expanded="true"] > a {
	background-color: var(--tamuk-blue-lightest);
	color: var(--tamuk-blue);
}

/* Focus trap indicator (active mobile menu) */
body.menu-open {
	overflow: hidden;
}

body.menu-open .site {
	/* Prevent interaction with content behind mobile menu */
}

/* ===========================
   Touch Target Minimum Size (44x44px)
   =========================== */

.mobile-menu a,
.mobile-menu button,
nav a,
nav button {
	min-height: 44px;
	min-width: 44px;
	display: inline-flex;
	align-items: center;
}