/**
 * Mobile Navigation Overlay Styles
 *
 * Full-screen overlay menu for mobile devices with
 * backdrop blur, staggered animations, and accessibility features.
 */

/* ==========================================================================
   Mobile Menu Overlay
   ========================================================================== */

.mobile-menu {
	position: fixed;
	inset: 0;
	height: 100vh; /* Fallback */
	height: 100svh; /* Stable viewport height - prevents reflow on mobile */
	z-index: 200;

	/* Backdrop blur effect - increased opacity for better readability */
	background-color: rgba(255, 255, 255, 0.96);
	backdrop-filter: blur(16px);
	-webkit-backdrop-filter: blur(16px);

	/* Initial hidden state */
	visibility: hidden;
	opacity: 0;
	pointer-events: none;

	/* Smooth transition */
	transition: opacity 300ms ease, visibility 300ms ease;
}

/* Active state */
.mobile-menu.is-open {
	visibility: visible;
	opacity: 1;
	pointer-events: auto;
}

/* Backdrop-filter fallback for older browsers */
@supports not (backdrop-filter: blur(1px)) {
	.mobile-menu {
		background-color: rgba(255, 255, 255, 0.95);
	}
}

/* Body scroll lock when menu is open */
body:has(.mobile-menu.is-open) {
	overflow: hidden;
}

/* ==========================================================================
   Close Button
   ========================================================================== */

.mobile-menu__close {
	position: fixed;
	top: 16px;
	right: 16px;
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	width: 48px;
	height: 48px;
	background: none;
	border: none;
	padding: 0;
	cursor: pointer;
	z-index: 201;
}

/* X icon using rotated bars */
.mobile-menu__close .toggle-bar {
	position: absolute;
	display: block;
	width: 24px;
	height: 2px;
	background-color: var(--ink);
}

.mobile-menu__close .toggle-bar:first-child {
	transform: rotate(45deg);
}

.mobile-menu__close .toggle-bar:last-child {
	transform: rotate(-45deg);
}

/* Focus state for close button */
.mobile-menu__close:focus-visible {
	outline: 2px solid var(--ink);
	outline-offset: 4px;
	border-radius: 4px;
}

/* ==========================================================================
   Inner Content Container
   ========================================================================== */

.mobile-menu__inner {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	height: 100%;
	padding: 80px 24px 40px;
	gap: 48px;
}

/* ==========================================================================
   Navigation Links
   ========================================================================== */

.mobile-menu__nav ul {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 8px;
	list-style: none;
	padding: 0;
	margin: 0;
}

.mobile-menu__nav li {
	/* Staggered animation setup - initial state */
	opacity: 0;
	transform: translateY(20px);
	transition: opacity 400ms ease-out, transform 400ms ease-out;
}

/* Staggered animation delays */
.mobile-menu__nav li:nth-child(1) { transition-delay: 0ms; }
.mobile-menu__nav li:nth-child(2) { transition-delay: 50ms; }
.mobile-menu__nav li:nth-child(3) { transition-delay: 100ms; }
.mobile-menu__nav li:nth-child(4) { transition-delay: 150ms; }
.mobile-menu__nav li:nth-child(5) { transition-delay: 200ms; }

/* Animate in when menu is open */
.mobile-menu.is-open .mobile-menu__nav li {
	opacity: 1;
	transform: translateY(0);
}

.mobile-menu__nav a {
	display: block;
	padding: 16px 24px;
	min-height: 44px; /* WCAG 2.2 AAA touch target */
	font-size: clamp(28px, 6vw, 36px);
	font-weight: 700;
	text-transform: uppercase;
	text-decoration: none;
	color: var(--ink);
	transition: color 200ms ease;
}

.mobile-menu__nav a:hover,
.mobile-menu__nav a:focus {
	color: #365314;
}

/* Active page indicator */
.mobile-menu__nav a[aria-current="page"] {
	color: #365314;
	position: relative;
}

.mobile-menu__nav a[aria-current="page"]::before {
	content: "";
	position: absolute;
	left: 0;
	top: 50%;
	transform: translateY(-50%);
	width: 4px;
	height: 24px;
	background-color: #365314;
	border-radius: 2px;
}

/* Focus state for links */
.mobile-menu__nav a:focus-visible {
	outline: 2px solid var(--ink);
	outline-offset: 4px;
	border-radius: 4px;
}

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

@media (prefers-reduced-motion: reduce) {
	.mobile-menu {
		transition: none !important;
	}

	.mobile-menu__nav li {
		opacity: 1;
		transform: none;
		transition: none !important;
		transition-delay: 0ms !important;
	}
}