/*
 * Syder animated navigation foundation.
 * Layout files define placement, dimensions, and item motion.
 */

.syder-nav-menu {
	--syder-menu-backdrop: rgba(0, 0, 0, 0.5);
	--syder-menu-border-color: var(--color-bg-alt, #18130e);
	--syder-menu-trigger-size: 50px;
	--syder-menu-trigger-line: 4px;
	--syder-menu-trigger-color: var(--color-text, #000);
	--syder-menu-trigger-active-color: var(--color-frame-alt, #a17445);
	--syder-menu-link-color: var(--color-text-alt, #fff);
	--syder-menu-link-hover-color: var(--color-frame-alt, #a17445);
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 0;
	border: 0 solid var(--syder-menu-border-color);
	background-color: transparent;
	backface-visibility: hidden;
	transition: border-width 0.3s, background-color 0.3s, height 0s 0.3s;
}

.syder-nav-menu.syder-nav-menu--open {
	height: 100%;
	background-color: var(--syder-menu-backdrop);
	transition: border-width 0.3s, background-color 0.3s;
}

.syder-nav-menu__overlay {
	position: absolute;
	width: 100%;
}

.syder-nav-menu--open .syder-nav-menu__overlay {
	height: 100%;
}

.syder-nav-menu__trigger {
	position: fixed;
	z-index: 100;
	display: block;
	width: var(--syder-menu-trigger-size);
	height: var(--syder-menu-trigger-size);
	cursor: pointer;
}

.syder-nav-menu__trigger span,
.syder-nav-menu__trigger span::before,
.syder-nav-menu__trigger span::after {
	position: absolute;
	left: 0;
	display: block;
	width: 100%;
	height: var(--syder-menu-trigger-line);
	background: var(--syder-menu-trigger-color);
	content: "";
}

.syder-nav-menu__trigger span {
	top: 50%;
	font-size: 0;
	transition: background-color 0.3s;
	-webkit-touch-callout: none;
	user-select: none;
}

.syder-nav-menu__trigger span::before,
.syder-nav-menu__trigger span::after {
	transition: transform 0.3s, background-color 0.3s;
}

.syder-nav-menu__trigger span::before {
	transform: translateY(-250%);
}

.syder-nav-menu__trigger span::after {
	transform: translateY(250%);
}

.syder-nav-menu ul {
	position: fixed;
	margin: 0;
	padding: 0;
	list-style: none;
}

.syder-nav-menu ul li {
	visibility: hidden;
	opacity: 0;
	transition: transform 0.3s, opacity 0.2s, visibility 0s 0.3s;
}

.syder-nav-menu.syder-nav-menu--open ul li {
	visibility: visible;
	opacity: 1;
	transition: transform 0.3s, opacity 0.3s;
}

.syder-nav-menu ul li a {
	display: block;
	outline: none;
	text-decoration: none;
	transition: color 0.2s, opacity 0.2s;
}

.syder-nav-menu ul li a::before {
	display: none;
}

.syder-nav-menu ul li a:hover,
.syder-nav-menu ul li a:focus {
	color: var(--syder-menu-link-hover-color);
}

@media (prefers-reduced-motion: reduce) {
	.syder-nav-menu,
	.syder-nav-menu *,
	.syder-nav-menu *::before,
	.syder-nav-menu *::after {
		transition: none;
	}
}