/*
 * Universal Temple Theme – Layout
 *
 * Structural layout for the site header, primary navigation (desktop and
 * mobile), and site footer. All values reference --utt-* design tokens.
 *
 * Phase 3: Header, navigation, footer, and main content area positioning.
 * Component-level styles (cards, comments, pagination) are in components.css.
 *
 * @package UniversalTempleTheme
 * @version 0.3.0
 */

/* =========================================================================
 * Site Header
 * ====================================================================== */

.site-header {
	position: sticky;
	top: 0;
	z-index: var(--utt-z-overlay);
	background-color: var(--utt-color-surface);
	border-bottom: var(--utt-border);
	box-shadow: var(--utt-shadow-sm);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--utt-space-6);
	min-height: 64px;
}

/* =========================================================================
 * Site Branding
 * ====================================================================== */

.site-branding {
	flex-shrink: 0;
}

/* Custom logo */
.site-branding .custom-logo-link {
	display: block;
	text-decoration: none;
}

.site-branding .custom-logo {
	display: block;
	max-height: 48px;
	width: auto;
}

/* Text fallback */
.site-title {
	margin: 0;
	font-family: var(--utt-font-heading);
	font-size: var(--utt-text-xl);
	font-weight: var(--utt-weight-bold);
	line-height: var(--utt-leading-tight);
}

.site-title a {
	color: var(--utt-color-primary);
	text-decoration: none;
}

.site-title a:hover {
	color: var(--utt-color-primary-hover);
	text-decoration: none;
}

.site-description {
	margin: var(--utt-space-1) 0 0;
	font-size: var(--utt-text-sm);
	color: var(--utt-color-text-muted);
	line-height: var(--utt-leading-snug);
}

/* =========================================================================
 * Main Navigation – Shared
 * ====================================================================== */

.main-navigation {
	display: flex;
	align-items: center;
}

.nav-menu {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: var(--utt-space-1);
}

.nav-menu a {
	display: block;
	padding: var(--utt-space-2) var(--utt-space-3);
	color: var(--utt-color-text);
	font-size: var(--utt-text-base);
	font-weight: var(--utt-weight-medium);
	text-decoration: none;
	border-radius: var(--utt-radius-base);
	transition: color var(--utt-transition-fast),
	            background-color var(--utt-transition-fast);
}

.nav-menu a:hover {
	color: var(--utt-color-primary);
	background-color: var(--utt-color-surface-alt);
	text-decoration: none;
}

/* Current page / active state */
.nav-menu .current-menu-item > a,
.nav-menu .current-menu-ancestor > a,
.nav-menu .current_page_item > a,
.nav-menu .current_page_ancestor > a {
	color: var(--utt-color-primary);
	background-color: var(--utt-color-surface-alt);
}

/* =========================================================================
 * Desktop Submenus
 * CSS-only hover/focus-within dropdowns. JavaScript is not required for
 * basic submenu access on desktop.
 * ====================================================================== */

.nav-menu .menu-item-has-children {
	position: relative;
}

.nav-menu .sub-menu {
	list-style: none;
	margin: 0;
	padding: var(--utt-space-2) 0;
	position: absolute;
	top: 100%;
	left: 0;
	min-width: 200px;
	background-color: var(--utt-color-surface);
	border: var(--utt-border);
	border-radius: var(--utt-radius-md);
	box-shadow: var(--utt-shadow-md);
	z-index: var(--utt-z-raised);
	/* Hidden by default; shown on hover/focus-within */
	opacity: 0;
	pointer-events: none;
	transform: translateY(4px);
	transition: opacity var(--utt-transition-fast),
	            transform var(--utt-transition-fast);
}

.nav-menu .menu-item-has-children:hover > .sub-menu,
.nav-menu .menu-item-has-children:focus-within > .sub-menu {
	opacity: 1;
	pointer-events: auto;
	transform: translateY(0);
}

.nav-menu .sub-menu a {
	padding: var(--utt-space-2) var(--utt-space-5);
	font-size: var(--utt-text-sm);
	border-radius: 0;
}

/* Dropdown indicator */
.nav-menu .menu-item-has-children > a::after {
	content: '\25BE'; /* ▾ */
	display: inline-block;
	margin-left: var(--utt-space-2);
	font-size: 0.7em;
}

/* =========================================================================
 * Mobile Menu Toggle
 * Hidden on desktop. Shown below the breakpoint.
 * ====================================================================== */

.menu-toggle {
	display: none;
	background: none;
	border: var(--utt-border-strong);
	border-radius: var(--utt-radius-md);
	padding: var(--utt-space-2) var(--utt-space-3);
	cursor: pointer;
	min-height: 44px;
	min-width: 44px;
	align-items: center;
	justify-content: center;
	color: var(--utt-color-text);
	transition: background-color var(--utt-transition-fast),
	            border-color var(--utt-transition-fast);
}

.menu-toggle:hover {
	background-color: var(--utt-color-surface-alt);
	border-color: var(--utt-color-border-strong);
}

.menu-toggle__bars {
	display: flex;
	flex-direction: column;
	gap: 4px;
	width: 20px;
}

.menu-toggle__bar {
	display: block;
	height: 2px;
	background-color: currentColor;
	border-radius: 1px;
	transition: transform var(--utt-transition-base),
	            opacity var(--utt-transition-base);
}

/* Animated X state when menu is open */
.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(1) {
	transform: translateY(6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(2) {
	opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(3) {
	transform: translateY(-6px) rotate(-45deg);
}

/* =========================================================================
 * Mobile Navigation
 * Below 768 px the toggle button is shown and the nav menu collapses.
 * ====================================================================== */

@media (max-width: 767px) {

	.menu-toggle {
		display: inline-flex;
	}

	.main-navigation {
		position: static;
	}

	.nav-menu {
		display: none;
		position: absolute;
		top: 100%;
		left: 0;
		right: 0;
		flex-direction: column;
		align-items: stretch;
		gap: 0;
		background-color: var(--utt-color-surface);
		border-bottom: var(--utt-border);
		box-shadow: var(--utt-shadow-md);
		padding: var(--utt-space-4);
		z-index: var(--utt-z-overlay);
	}

	/* JavaScript adds .is-open; without JS the menu is simply always hidden
	   at mobile width. Users without JS can still access all content through
	   crawlable anchor links in the page body. */
	.nav-menu.is-open {
		display: flex;
	}

	.nav-menu a {
		padding: var(--utt-space-3) var(--utt-space-4);
		font-size: var(--utt-text-md);
	}

	/* Submenus flat in mobile */
	.nav-menu .sub-menu {
		position: static;
		opacity: 1;
		pointer-events: auto;
		transform: none;
		box-shadow: none;
		border: none;
		border-left: 3px solid var(--utt-color-border);
		border-radius: 0;
		padding: 0 0 0 var(--utt-space-4);
		margin: var(--utt-space-2) 0;
		display: block; /* always visible when parent is open on mobile */
	}

	.nav-menu .sub-menu a {
		padding: var(--utt-space-2) var(--utt-space-3);
	}

	.nav-menu .menu-item-has-children > a::after {
		display: none;
	}

}

/* =========================================================================
 * Main content area
 * The .site-header is sticky; position context for mobile nav dropdown.
 * ====================================================================== */

#site-header {
	position: sticky;
}

/* =========================================================================
 * Archive / page header
 * ====================================================================== */

.archive-header {
	margin-bottom: var(--utt-space-12);
	padding-bottom: var(--utt-space-8);
	border-bottom: var(--utt-border);
}

.archive-title {
	font-size: var(--utt-text-3xl);
	color: var(--utt-color-primary);
	margin-bottom: var(--utt-space-4);
}

.archive-description {
	font-size: var(--utt-text-md);
	color: var(--utt-color-text-muted);
	max-width: 60ch;
}

.archive-description p:last-child {
	margin-bottom: 0;
}

/* =========================================================================
 * Post navigation (previous / next single post)
 * ====================================================================== */

.post-navigation {
	display: flex;
	gap: var(--utt-space-6);
	margin-top: var(--utt-space-16);
	padding-top: var(--utt-space-8);
	border-top: var(--utt-border);
}

.post-navigation .nav-previous,
.post-navigation .nav-next {
	flex: 1;
}

.post-navigation .nav-next {
	text-align: right;
}

.post-navigation .nav-subtitle {
	display: block;
	font-size: var(--utt-text-xs);
	font-weight: var(--utt-weight-semibold);
	color: var(--utt-color-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.05em;
	margin-bottom: var(--utt-space-1);
}

.post-navigation .nav-title {
	display: block;
	font-family: var(--utt-font-heading);
	font-size: var(--utt-text-base);
	font-weight: var(--utt-weight-semibold);
	color: var(--utt-color-primary);
	line-height: var(--utt-leading-snug);
}

.post-navigation a {
	text-decoration: none;
}

.post-navigation a:hover .nav-title {
	text-decoration: underline;
	text-decoration-color: var(--utt-color-accent);
}

@media (max-width: 600px) {
	.post-navigation {
		flex-direction: column;
	}

	.post-navigation .nav-next {
		text-align: left;
	}
}

/* =========================================================================
 * Site Footer
 * ====================================================================== */

.site-footer {
	background-color: var(--utt-color-surface-alt);
	border-top: var(--utt-border-strong);
	padding-top: var(--utt-space-16);
	padding-bottom: var(--utt-space-8);
	margin-top: var(--utt-space-16);
}

.site-footer__inner {
	display: flex;
	flex-direction: column;
	gap: var(--utt-space-10);
}

.site-footer__widgets {
	display: flex;
	flex-wrap: wrap;
	gap: var(--utt-space-10);
}

.site-footer__brand {
	flex: 1;
	min-width: 180px;
}

.site-footer__name {
	margin: 0 0 var(--utt-space-2);
	font-family: var(--utt-font-heading);
	font-size: var(--utt-text-lg);
	font-weight: var(--utt-weight-bold);
}

.site-footer__name a {
	color: var(--utt-color-primary);
	text-decoration: none;
}

.site-footer__name a:hover {
	text-decoration: underline;
	text-decoration-color: var(--utt-color-accent);
}

.site-footer__tagline {
	margin: 0;
	font-size: var(--utt-text-sm);
	color: var(--utt-color-text-muted);
}

/* Footer nav */
.footer-navigation {
	flex: 1;
	min-width: 140px;
}

.footer-nav-menu {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: var(--utt-space-2);
}

.footer-nav-menu a {
	color: var(--utt-color-text-muted);
	font-size: var(--utt-text-sm);
	text-decoration: none;
	transition: color var(--utt-transition-fast);
}

.footer-nav-menu a:hover {
	color: var(--utt-color-primary);
}

/* Footer bottom bar */
.site-footer__bottom {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: var(--utt-space-4);
	padding-top: var(--utt-space-6);
	border-top: var(--utt-border);
}

.site-footer__copyright {
	margin: 0;
	font-size: var(--utt-text-sm);
	color: var(--utt-color-text-muted);
}

/* Legal nav */
.legal-nav-menu {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: var(--utt-space-4);
}

.legal-nav-menu a {
	color: var(--utt-color-text-muted);
	font-size: var(--utt-text-xs);
	text-decoration: underline;
	text-decoration-color: transparent;
	transition: color var(--utt-transition-fast),
	            text-decoration-color var(--utt-transition-fast);
}

.legal-nav-menu a:hover {
	color: var(--utt-color-primary);
	text-decoration-color: var(--utt-color-accent);
}

@media (max-width: 600px) {
	.site-footer__bottom {
		flex-direction: column;
		align-items: flex-start;
	}
}

/* =========================================================================
 * Reduced-motion overrides for layout animations
 * ====================================================================== */

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

	.nav-menu .sub-menu {
		transition: none;
	}
}