/* ==========================================================================
   Header — Radio Anar
   Structure HTML inchangée : on distingue nav.nav (conteneur) et ul.nav
   (liste de liens) par le sélecteur de balise, pas seulement la classe.
   Direction : fanzine radio pirate — papier, scotch, cadran de fréquence
   (cohérent avec article.css / footer.css)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&display=swap');

:root {
	--header-bg: #ede6d6;
	--header-bg-raised: #e3dac4;
	--header-text: #191712;
	--header-muted: #5b5648;
	--header-accent: #e8432c;
	--header-tape: #d9b23c;
	--header-line: rgba(25, 23, 18, 0.16);
	--header-height: 76px;

	--header-font-display: "Space Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
	--header-font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
}

/* ---- Conteneur header -------------------------------------------------- */

header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: var(--header-bg);
	border-bottom: 3px solid var(--header-text);
}

/* Filet façon cadran de fréquence, cohérent avec footer/article */
header::after {
	content: "";
	display: block;
	height: 4px;
	background-image: repeating-linear-gradient(
		90deg,
		var(--header-text) 0,
		var(--header-text) 2px,
		transparent 2px,
		transparent 10px
	);
	opacity: 0.25;
}

nav.nav {
	display: flex;
	align-items: center;
	gap: 24px;
	height: var(--header-height);
	max-width: 1180px;
	margin: 0 auto;
	padding: 0 24px;
}

/* ---- Logo --------------------------------------------------------------- */

.logo-link {
	display: flex;
	align-items: center;
	flex-shrink: 0;
	position: relative;
}

.logo {
	height: 40px;
	width: auto;
	display: block;
}

/* ---- Burger (masqué par défaut, visible en mobile) ----------------------- */

.burger {
	display: none;
	flex-direction: column;
	justify-content: center;
	gap: 5px;
	width: 36px;
	height: 36px;
	margin-left: auto;
	background: transparent;
	border: none;
	cursor: pointer;
	padding: 0;
}

.burger span {
	display: block;
	width: 100%;
	height: 2px;
	background: var(--header-text);
	border-radius: 1px;
	transition: transform 0.2s ease, opacity 0.2s ease;
}

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

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

.burger[aria-expanded="true"] span:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}

/* ---- Liste de navigation -------------------------------------------------- */

ul.nav {
	display: flex;
	align-items: center;
	gap: 28px;
	list-style: none;
	margin: 0;
	padding: 0;
}

.nav-item a {
	font-family: var(--header-font-display);
	font-weight: 700;
	font-size: 13px;
	letter-spacing: 0.02em;
	text-transform: uppercase;
	color: var(--header-text);
	text-decoration: none;
	padding: 8px 0;
	position: relative;
}

.nav-item a::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: 0;
	width: 0;
	height: 2px;
	background: var(--header-accent);
	transition: width 0.2s ease;
}

.nav-item a:hover::after,
.nav-item a:focus-visible::after {
	width: 100%;
}

.nav-item a:focus-visible {
	outline: 2px solid var(--header-accent);
	outline-offset: 4px;
}

/* ---- Formulaire de recherche ---------------------------------------------- */

.recherche {
	display: flex;
	align-items: center;
	margin-left: auto;
	border: 1px solid var(--header-text);
	border-radius: 0;
	overflow: hidden;
	background: var(--header-bg-raised);
}

.recherche input {
	font-family: var(--header-font-ui);
	font-size: 13px;
	color: var(--header-text);
	background: transparent;
	border: none;
	padding: 8px 14px;
	width: 160px;
	outline: none;
}

.recherche input::placeholder {
	color: var(--header-muted);
}

.recherche button[type="submit"] {
	font-family: var(--header-font-display);
	font-weight: 700;
	font-size: 11px;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: var(--header-bg);
	background: var(--header-accent);
	border: none;
	padding: 0 16px;
	height: 36px;
	cursor: pointer;
	transition: filter 0.15s ease;
}

.recherche button[type="submit"]:hover {
	filter: brightness(1.1);
}

/* ==========================================================================
   RESPONSIVE — menu mobile
   ========================================================================== */

@media (max-width: 860px) {
	nav.nav {
		flex-wrap: wrap;
		height: auto;
		padding: 14px 20px;
	}

	.burger {
		display: flex;
		order: 2;
	}

	.logo-link {
		order: 1;
	}

	.recherche {
		order: 3;
		margin-left: auto;
	}

	ul.nav {
		order: 4;
		flex-direction: column;
		align-items: flex-start;
		width: 100%;
		gap: 4px;
		max-height: 0;
		overflow: hidden;
		opacity: 0;
		transition: max-height 0.25s ease, opacity 0.2s ease;
	}

	.burger[aria-expanded="true"] ~ ul.nav {
		max-height: 320px;
		opacity: 1;
		margin-top: 12px;
	}

	.nav-item {
		width: 100%;
		border-bottom: 1px solid var(--header-line);
	}

	.nav-item a {
		display: block;
		width: 100%;
		padding: 10px 0;
	}

	.nav-item a::after {
		display: none;
	}
}

@media (max-width: 480px) {
	.logo {
		height: 32px;
	}

	.recherche input {
		width: 110px;
	}
}

#lecteur-radio {
	height: auto;
	max-height: none;
	overflow: visible;
}