/**
 * Site navigation
 * Sticky black nav bar, desktop nav layout, mobile nav header + slide-down
 * menu, brand logo, login modal, and the compact-on-scroll behavior.
 *
 * The Explore sidebar lives in css/explore.css.
 * Viewport-based responsive flips (desktop <-> mobile) live in css/responsive.css.
 */

section#nav {
	position: sticky;
	top: 0;
	z-index: 1000;
	background-color: var(--brand-black);
	margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
	box-shadow:
		inset 0 -1px 0 rgba(255, 255, 255, 0.06),
		var(--shadow-nav);
	transition: box-shadow 0.25s var(--ease-out);
}

body.admin-bar section#nav {
	top: 32px;
}

/* ---------- Compact-on-scroll transitions (~40% smaller) ---------- */
.desktop-nav,
.nav-logo,
.nav-logo__svg,
.nav-explore-trigger,
.nav-explore-trigger i,
.nav-login-trigger,
.desktop-nav .main-nav__mtp img {
	transition:
		padding 0.25s var(--ease-out),
		font-size 0.25s var(--ease-out),
		width 0.25s var(--ease-out),
		height 0.25s var(--ease-out),
		min-height 0.25s var(--ease-out),
		max-height 0.25s var(--ease-out),
		max-width 0.25s var(--ease-out),
		top 0.25s var(--ease-out);
}

body.is-scrolled .desktop-nav {
	padding: 0.4rem 0 0.45rem;
}
body.is-scrolled .nav-logo {
	min-height: 1.8rem;
	font-size: clamp(0.85rem, 0.5vw + 0.7rem, 1rem);
}
body.is-scrolled .nav-logo__svg {
	width: 1.6rem;
	height: 1.6rem;
	top: 2px;
}
body.is-scrolled .nav-explore-trigger {
	width: 1.2rem;
	height: 1.2rem;
}
body.is-scrolled .nav-explore-trigger i {
	font-size: 0.75rem;
}
body.is-scrolled .nav-login-trigger {
	padding: 0.25rem 0.7rem;
	font-size: 0.85rem;
}
body.is-scrolled .desktop-nav .main-nav__mtp img {
	max-height: 36px;
	max-width: 75px;
}

/* ---------- Brand logo ---------- */
.nav-logo {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	float: none;
	min-height: 3rem;
	line-height: 1.15;
	text-decoration: none;
	color: var(--brand-white) !important;
	font-family: 'Modulus Pro Bold', var(--font-sans);
	font-size: clamp(1.15rem, 1vw + 1rem, 1.35rem);
	font-weight: bold;
	background: none !important;
	width: auto;
	padding: 0;
	letter-spacing: -0.02em;
	transition: color 0.2s var(--ease-out);
}
.nav-logo:hover {
	color: var(--brand-lime) !important;
}
.nav-logo__mark {
	display: inline-flex;
	flex-shrink: 0;
	align-items: center;
	justify-content: center;
}
.nav-logo__svg {
	display: block;
	width: 2.7rem;
	height: 2.7rem;
	position: relative;
	top: 4px;
}

/* ---------- Login button ---------- */
.nav-login-trigger {
	background: transparent;
	border: 1px solid rgba(255, 255, 255, 0.35);
	color: rgba(255, 255, 255, 0.9);
	font-family: inherit;
	font-weight: 600;
	font-size: 0.9375rem;
	letter-spacing: 0.01em;
	padding: 0.4rem 0.95rem;
	border-radius: var(--radius-full);
	cursor: pointer;
	flex-shrink: 0;
	transition:
		color 0.2s var(--ease-out),
		border-color 0.2s var(--ease-out),
		background 0.2s var(--ease-out);
}
.nav-login-trigger:hover {
	color: var(--brand-mint);
	border-color: var(--brand-mint);
}
.nav-login-trigger:focus-visible {
	outline: 2px solid var(--brand-mint);
	outline-offset: 2px;
}

/* ---------- Login modal (<dialog>) ---------- */
.mtp-login-modal {
	border: none;
	padding: 0;
	border-radius: var(--radius-lg);
	max-width: min(26rem, calc(100vw - 2rem));
	width: 100%;
	background: var(--brand-white);
	color: var(--brand-black);
	box-shadow: var(--shadow-md);
	z-index: 100000;
}
.mtp-login-modal::backdrop {
	background: rgba(0, 0, 0, 0.55);
}
.mtp-login-modal__inner {
	padding: 1.25rem 1.35rem 1.5rem;
}
.mtp-login-modal__header {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 1rem;
	margin-bottom: 1rem;
}
.mtp-login-modal__title {
	margin: 0;
	font-size: 1.25rem;
	font-weight: 700;
	font-family: 'Modulus Pro Bold', var(--font-sans);
	line-height: 1.2;
}
.mtp-login-modal__close {
	background: transparent;
	border: none;
	padding: 0.25rem;
	margin: -0.25rem -0.25rem 0 0;
	cursor: pointer;
	color: var(--brand-black);
	font-size: 1.25rem;
	line-height: 1;
	border-radius: var(--radius-sm);
	transition: color 0.2s ease, background 0.2s ease;
}
.mtp-login-modal__close:hover {
	color: var(--brand-purple);
}
.mtp-login-modal__close:focus-visible {
	outline: 2px solid var(--brand-purple);
	outline-offset: 2px;
}
.mtp-login-modal__body {
	font-size: 1rem;
	line-height: 1.5;
}
.mtp-login-modal__body form {
	margin: 0;
}

/* ---------- Main nav menu ---------- */
.main-nav {
	float: none;
}
.main-nav li {
	display: inline-block;
	list-style: none;
}
.main-nav .menu,
.main-nav ul.menu {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: flex-end;
	gap: 0.35rem clamp(1rem, 2.5vw, 2.25rem);
}
.main-nav li a {
	text-decoration: none;
	color: rgba(255, 255, 255, 0.82);
	margin-left: 0;
	font-weight: 600;
	font-size: 0.9375rem;
	letter-spacing: 0.01em;
	transition: color 0.2s var(--ease-out);
}
.main-nav li a:hover {
	color: var(--brand-mint);
}

#menu-mtp-menu {
	margin: 0;
	position: relative;
	top: 0;
}

/* MTP wordmark image in the desktop nav (raster, capped both axes). */
.main-nav__mtp {
	display: inline-flex;
	align-items: center;
	flex-shrink: 0;
	line-height: 0;
	cursor: pointer;
}
.desktop-nav .main-nav__mtp img {
	display: block;
	width: auto;
	height: auto;
	max-height: 60px;
	max-width: 120px;
	object-fit: contain;
}

/* ---------- Mobile nav header (collapsed bar) ---------- */
.mobile-nav {
	display: none;
	align-items: center;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: 1rem;
	padding: 0.75rem 0 1rem;
}
.mobile-nav .nav-logo {
	float: none;
}
.mobile-nav__actions {
	display: flex;
	align-items: center;
	gap: 0.85rem;
	margin-left: auto;
}

/* Hamburger trigger — opens the .mtp-mobile-menu slide-in panel. */
.mobile-show {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2.25rem;
	height: 2.25rem;
	padding: 0;
	background: transparent;
	border: 0;
	cursor: pointer;
	color: var(--brand-white);
	font-size: 1.4rem;
	flex-shrink: 0;
	transition: color 0.2s var(--ease-out);
}
.mobile-show:hover {
	color: var(--brand-mint);
}
.mobile-show:focus-visible {
	outline: 2px solid var(--brand-mint);
	outline-offset: 2px;
	border-radius: var(--radius-sm);
}

/* ---------- Desktop nav layout ---------- */
.desktop-nav {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: flex-end;
	flex-wrap: wrap;
	gap: 1rem 1.5rem;
	padding: 0.85rem 0 1rem;
}
.desktop-nav .nav-logo {
	position: absolute;
	left: 50%;
	transform: translateX(-50%);
	z-index: 1;
	flex: none;
}
.desktop-nav .main-nav {
	flex: 0 1 auto;
	display: flex;
	align-items: center;
	justify-content: flex-end;
	flex-wrap: wrap;
	gap: clamp(0.75rem, 2vw, 1.5rem);
	position: relative;
	z-index: 2;
}
.desktop-nav .nav-login-trigger {
	position: relative;
	z-index: 2;
}

/* ---------- Explore (sidebar) trigger button ---------- */
.nav-explore-trigger {
	margin-right: auto;
	order: -1;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2rem;
	height: 2rem;
	padding: 0;
	background: transparent;
	border: 0px solid rgba(255, 255, 255, 0.35);
	border-radius: 9px;
	color: rgba(255, 255, 255, 0.9);
	font-size: 0.85rem;
	cursor: pointer;
	flex-shrink: 0;
	position: relative;
	z-index: 2;
	transition:
		color 0.2s var(--ease-out),
		border-color 0.2s var(--ease-out),
		background 0.2s var(--ease-out),
		transform 0.25s var(--ease-out);
}
.nav-explore-trigger:hover {
	color: var(--brand-mint);
	border-color: var(--brand-mint);
}
.nav-explore-trigger:focus-visible {
	outline: 2px solid var(--brand-mint);
	outline-offset: 2px;
}
.nav-explore-trigger i {
	font-size: 1.25rem;
	transition: transform 0.25s var(--ease-out);
}

/* The mobile menu (right-side slide-in panel) lives in css/mobile-menu.css. */