/*
 * Layout: wraps, header, footer, page scaffolding.
 */

.wrap {
	width: 100%;
	max-width: var(--wrap);
	margin-inline: auto;
	padding-inline: var(--space-5);
}

.wrap--wide {
	max-width: var(--wrap-wide);
}

.site-main {
	padding-block: var(--space-8);
	min-height: 50vh;
}

.page-header {
	margin-bottom: var(--space-7);
}

/* ------------------------------------------------------------------ *
 * Header
 * ------------------------------------------------------------------ */

.site-header {
	border-bottom: 1px solid var(--silver-700);
	position: sticky;
	top: 0;
	z-index: 50;
	/* Opaque raised surface so scrolled content never bleeds through. */
	background-color: var(--jet-800);
}

.site-header__inner {
	max-width: var(--wrap-wide);
	margin-inline: auto;
	padding: var(--space-4) var(--space-5);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-5);
}

.site-header__brand .site-title {
	font-size: var(--step-1);
	font-weight: 600;
	letter-spacing: 0.02em;
}

.custom-logo {
	height: auto;
	max-height: 48px;
	width: auto;
}

/* Primary nav (desktop). */
.primary-nav {
	display: flex;
	align-items: center;
	gap: var(--space-6);
}

.primary-nav__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	align-items: center;
	gap: var(--space-6);
}

.primary-nav__list a {
	font-size: var(--step--1);
	text-transform: uppercase;
	letter-spacing: 0.1em;
	color: var(--silver-100);
	padding: var(--space-2) 0;
	display: inline-block;
	border-bottom: 1px solid transparent;
	transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.primary-nav__list a:hover {
	border-bottom-color: var(--burgundy-400);
}

.primary-nav__list .current-menu-item > a,
.primary-nav__list [aria-current="page"] {
	color: var(--silver-300);
	border-bottom-color: var(--burgundy-300);
}

/* Nav toggle (hidden on desktop). */
.nav-toggle {
	display: none;
	background: none;
	border: 0;
	padding: var(--space-2);
	cursor: pointer;
	color: var(--silver-100);
	min-width: 44px;
	min-height: 44px;
}

.nav-toggle__box {
	display: block;
	width: 26px;
	height: 16px;
	position: relative;
}

.nav-toggle__bar {
	position: absolute;
	left: 0;
	width: 100%;
	height: 1.5px;
	background: currentColor;
	transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}

.nav-toggle__bar:nth-child(1) { top: 0; }
.nav-toggle__bar:nth-child(2) { bottom: 0; }

[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}
[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
	transform: translateY(-7px) rotate(-45deg);
}

/* ------------------------------------------------------------------ *
 * Footer
 * ------------------------------------------------------------------ */

.site-footer {
	border-top: 1px solid var(--silver-700);
	margin-top: var(--space-9);
}

.site-footer__inner {
	max-width: var(--wrap-wide);
	margin-inline: auto;
	padding: var(--space-8) var(--space-5);
	display: grid;
	gap: var(--space-6);
	grid-template-columns: 1fr auto;
	align-items: start;
}

.site-footer__email {
	font-size: var(--step-1);
	margin: var(--space-2) 0 0;
}

.site-footer__email a {
	border-bottom: 1px solid var(--burgundy-300);
}

.site-footer__email a:hover {
	border-bottom-width: 2px;
	border-bottom-color: var(--burgundy-400);
}

.site-footer__colophon {
	grid-column: 1 / -1;
	font-size: var(--step--1);
	color: var(--silver-500);
	margin: 0;
	padding-top: var(--space-5);
	border-top: 1px solid var(--silver-700);
}

/* ------------------------------------------------------------------ *
 * Social menu
 * ------------------------------------------------------------------ */

.social-menu__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	gap: var(--space-2);
	align-items: center;
}

.social-menu__link {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	color: var(--silver-500);
	padding: var(--space-2);
	min-width: 24px;
	min-height: 24px;
	transition: color var(--dur-fast) var(--ease);
}

.social-menu__link:hover,
.social-menu__link:focus {
	color: var(--silver-100);
}

/* ------------------------------------------------------------------ *
 * Mobile drawer
 * ------------------------------------------------------------------ */

@media (max-width: 899px) {
	.nav-toggle {
		display: inline-flex;
		align-items: center;
		justify-content: center;
	}

	.primary-nav {
		position: fixed;
		inset: 0 0 0 auto;
		width: min(80vw, 320px);
		background: var(--jet-800);
		border-left: 1px solid var(--silver-700);
		flex-direction: column;
		align-items: flex-start;
		justify-content: flex-start;
		gap: var(--space-6);
		padding: var(--space-8) var(--space-6);
		transform: translateX(100%);
		transition: transform var(--dur-slow) var(--ease);
		z-index: 100;
		overflow-y: auto;
	}

	.primary-nav.is-open {
		transform: translateX(0);
	}

	.primary-nav__list {
		flex-direction: column;
		align-items: flex-start;
		gap: var(--space-5);
		width: 100%;
	}

	.primary-nav__list a {
		font-size: var(--step-1);
	}

	body.nav-open {
		overflow: hidden;
	}

	/* Backdrop. */
	.nav-backdrop {
		position: fixed;
		inset: 0;
		background: rgba(8, 8, 10, 0.6);
		opacity: 0;
		visibility: hidden;
		transition: opacity var(--dur-slow) var(--ease), visibility var(--dur-slow) var(--ease);
		z-index: 90;
	}

	.nav-backdrop.is-open {
		opacity: 1;
		visibility: visible;
	}
}