/**
 * CBS Theme — navigation (navigation.md §3–§5)
 */

/* ——— Base ——— */
.nav {
	width: 100%;
	display: flex;
	align-items: center;
	justify-content: flex-start;
	gap: var(--cbs-space-6);
}

/* Burger visible à toutes les tailles (disposition unifiée, réunion 21/09/2026).
   Icône seule à toutes les tailles (Camille) : le mot « Menu » n'apparaît que
   dans l'en-tête du tiroir (.nav__panel-title). */
.nav__toggle {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--cbs-space-3);
	min-width: 2.75rem;
	height: 2.75rem;
	padding: 0;
	border: none;
	background-color: transparent;
	color: var(--cbs-white);
	cursor: pointer;
	transition: color var(--cbs-transition-base);
}

.nav__toggle-icon {
	display: block;
	width: 1.25rem;
	height: 2px;
	background-color: currentcolor;
	box-shadow:
		0 -6px 0 currentcolor,
		0 6px 0 currentcolor;
}

.nav__toggle:hover,
.nav__toggle[aria-expanded='true'] {
	color: var(--cbs-header-accent, var(--cbs-primary-light));
}

.nav__toggle:focus-visible {
	outline: 2px solid var(--cbs-header-accent, var(--cbs-primary-light));
	outline-offset: 2px;
}

.nav__menu {
	font-family: var(--cbs-font-sans);
}

.nav__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: var(--cbs-space-2);
}

.nav__link {
	font-size: var(--cbs-text-small);
	font-weight: 500;
	letter-spacing: var(--cbs-tracking-wide);
	text-decoration: none;
	color: var(--cbs-silver-100);
	border-bottom: 1px solid transparent;
	transition:
		color var(--cbs-transition-base),
		border-color var(--cbs-transition-base);
}

/* Niveau 1 uniquement — sous-menus (.nav__dropdown-link) restent en casse normale */
.nav__list > .nav__item > .nav__link,
.nav__list > .nav__item > .nav__parent-row .nav__link--parent {
	text-transform: uppercase;
}

.nav__link:hover,
.nav__link:focus-visible {
	color: var(--cbs-primary-light);
}

.nav__link[aria-current="page"] {
	color: var(--cbs-primary-light);
	border-bottom-color: transparent;
}

.nav__link:focus-visible {
	outline: 2px solid var(--cbs-gold);
	outline-offset: 4px;
}

/* ——— Tiroir (navigation.md §3), à toutes les tailles ———
   Disposition alignée sur academie-rituels-spa.fr : voile sombre plein écran,
   tiroir de 85 % glissant depuis la gauche, entête « Menu » + croix, un
   séparateur fin sous chaque item, sous-menu en bandeau plus sombre. */
.nav__menu {
	display: none;
}

/* Voile : couvre tout l'écran, y compris la barre d'en-tête et le burger
   (le tiroir se ferme par la croix, le voile ou Échap, cf. nav.js). */
.nav__menu.is-open {
	display: block;
	position: fixed;
	inset: 0;
	z-index: 1001;
	background-color: rgba(0, 0, 0, 0.5);
	-webkit-backdrop-filter: blur(4px);
	backdrop-filter: blur(4px);
	animation: cbs-nav-fade 0.3s linear;
}

.nav__panel {
	position: relative;
	width: 85%;
	max-width: 24rem;
	height: 100%;
	padding: var(--cbs-space-6);
	/* Noir (Camille, 21/09/2026), survols en bleu principal. */
	background-color: var(--cbs-silver-900);
	border-right: 1px solid rgba(255, 255, 255, 0.2);
	box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
	overflow-y: auto;
	animation: cbs-nav-slide 0.3s ease-in-out;
}

.nav__panel-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: var(--cbs-space-8);
}

.nav__panel-title {
	font-family: var(--cbs-font-serif);
	font-size: 1.125rem;
	font-weight: 700;
	text-transform: uppercase;
	color: var(--cbs-white);
}

.nav__close {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 44px;
	min-height: 44px;
	margin: calc(var(--cbs-space-2) * -1);
	padding: 0;
	border: none;
	background: none;
	color: rgba(255, 255, 255, 0.7);
	cursor: pointer;
	transition: color var(--cbs-transition-base);
}

.nav__close:hover,
.nav__close:focus-visible {
	color: var(--cbs-white);
}

.nav__close:focus-visible {
	outline: 2px solid var(--cbs-header-accent, var(--cbs-gold));
	outline-offset: 2px;
}

.nav__list {
	gap: var(--cbs-space-1);
}

/* Séparateur sous chaque item de niveau 1 */
.nav__list > .nav__item {
	border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.nav__list > .nav__item > .nav__link,
.nav__parent-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--cbs-space-3);
	width: 100%;
	padding-block: var(--cbs-space-4);
	font-size: 0.875rem;
	line-height: 1.25rem;
	font-weight: 400;
	letter-spacing: 0.1em;
	color: var(--cbs-white);
	border-bottom: none;
}

.nav__link--parent {
	display: inline-flex;
	align-items: center;
	flex: 1;
	min-width: 0;
	padding: 0;
	font: inherit;
	letter-spacing: inherit;
	color: inherit;
	text-align: left;
	border-bottom: none;
}

.nav__submenu-toggle {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	flex-shrink: 0;
	/* 44 px : seul moyen d'ouvrir un sous-menu au doigt quand le parent
	   pointe vers une vraie page. */
	min-width: 44px;
	min-height: 44px;
	padding: var(--cbs-space-2);
	/* marge verticale négative : la zone tactile de 44 px n'ajoute pas de
	   hauteur à la ligne, qui garde celle des items sans sous-menu (1.25rem). */
	margin: calc((1.25rem - 44px) / 2) calc(var(--cbs-space-2) * -1);
	border: none;
	background: none;
	cursor: pointer;
	font: inherit;
	color: inherit;
	line-height: 0;
}

/* Bandeau un peu plus clair que le tiroir noir, pleine largeur (compense le padding du panneau) */
.nav__dropdown {
	display: flex;
	flex-direction: column;
	gap: var(--cbs-space-3);
	margin: 0 calc(var(--cbs-space-6) * -1) var(--cbs-space-2);
	padding: var(--cbs-space-2) var(--cbs-space-6);
	list-style: none;
	background-color: var(--cbs-silver-850);
}

.nav__dropdown[hidden] {
	display: none;
}

.nav__dropdown-link {
	display: block;
	padding: 0;
	font-size: 0.75rem;
	letter-spacing: 0.025em;
	text-transform: uppercase;
	color: rgba(255, 255, 255, 0.7);
	text-decoration: none;
	transition: color var(--cbs-transition-base);
}

.nav__dropdown-link:hover,
.nav__dropdown-link:focus-visible {
	color: var(--cbs-primary-light);
}

.nav__chevron {
	width: 1rem;
	height: 1rem;
	flex-shrink: 0;
	transition: transform var(--cbs-transition-base);
}

.nav__submenu-toggle[aria-expanded='true'] .nav__chevron {
	transform: rotate(180deg);
}

@keyframes cbs-nav-fade {
	from {
		opacity: 0;
	}
}

@keyframes cbs-nav-slide {
	from {
		transform: translateX(-100%);
	}
}

@media (prefers-reduced-motion: reduce) {
	.nav__menu.is-open,
	.nav__panel {
		animation: none;
	}
}