/* Header styles for MARTIN Camille, Lysiane, Fabienne */

.ech-header {
	position: sticky;
	top: 0;
	z-index: 40;
	background: linear-gradient(
		to bottom,
		rgba(5, 6, 8, 0.96),
		rgba(5, 6, 8, 0.86)
	);
	backdrop-filter: blur(18px);
	border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.ech-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-20);
	padding-top: var(--space-16);
	padding-bottom: var(--space-16);
}

.ech-header__brand {
	display: flex;
	align-items: center;
}

.ech-header__logo-link {
	display: inline-flex;
	align-items: center;
	gap: var(--space-12);
	color: var(--color-text);
}

.ech-header__logo-mark {
	width: 34px;
	height: 34px;
	border-radius: 50%;
	background:
		radial-gradient(circle at 30% 20%, #f5d77f 0, #d4af37 32%, transparent 70%),
		radial-gradient(circle at 75% 80%, #0d5f4d 0, #050608 60%);
	box-shadow: var(--shadow-soft);
	border: 1px solid rgba(245, 241, 232, 0.4);
}

.ech-header__logo-text {
	font-family: var(--font-display);
	font-size: var(--font-size-lg);
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--color-text);
	white-space: nowrap;
}

/* Navigation */

.ech-header__nav {
	display: flex;
}

.ech-header__nav-list {
	display: flex;
	align-items: center;
	gap: var(--space-24);
}

.ech-header__nav-link {
	position: relative;
	font-size: var(--font-size-sm);
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--color-text-muted);
	padding: 0.25rem 0;
}

.ech-header__nav-link::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: -4px;
	width: 0;
	height: 2px;
	background: linear-gradient(90deg, #f5d77f, var(--color-primary));
	transition: width var(--transition-normal);
}

.ech-header__nav-link:hover,
.ech-header__nav-link:focus-visible {
	color: var(--color-text);
}

.ech-header__nav-link:hover::after,
.ech-header__nav-link:focus-visible::after {
	width: 100%;
}

.ech-header__nav-item--cta .ech-header__nav-link--cta {
	border-radius: var(--radius-pill);
	border: 1px solid rgba(245, 241, 232, 0.4);
	background:
		radial-gradient(circle at 0 0, rgba(212, 175, 55, 0.35), transparent 60%),
		rgba(8, 10, 18, 0.92);
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.ech-header__nav-item--cta .ech-header__nav-link--cta:hover,
.ech-header__nav-item--cta .ech-header__nav-link--cta:focus-visible {
	background: linear-gradient(135deg, #f5d77f, var(--color-primary));
	color: #141414;
	box-shadow: 0 16px 45px rgba(212, 175, 55, 0.6);
}

/* Mobile toggle */

.ech-header__toggle {
	display: none;
	position: relative;
	width: 42px;
	height: 38px;
	border-radius: var(--radius-pill);
	border: 1px solid rgba(245, 241, 232, 0.35);
	background: rgba(5, 6, 8, 0.85);
	align-items: center;
	justify-content: center;
	flex-direction: column;
	gap: 5px;
	cursor: pointer;
	color: var(--color-text);
}

.ech-header__toggle-bar {
	width: 20px;
	height: 2px;
	border-radius: 999px;
	background: var(--color-text);
	transition:
		transform var(--transition-normal),
		opacity var(--transition-normal);
}

/* State when mobile nav is open */
.ech-header__toggle[aria-expanded="true"] .ech-header__toggle-bar:first-child {
	transform: translateY(3.5px) rotate(45deg);
}

.ech-header__toggle[aria-expanded="true"] .ech-header__toggle-bar:last-child {
	transform: translateY(-3.5px) rotate(-45deg);
}

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

/* Mobile layout */

@media (max-width: 900px) {
	.ech-header__inner {
		padding-top: var(--space-12);
		padding-bottom: var(--space-12);
	}

	.ech-header__toggle {
		display: inline-flex;
	}

	.ech-header__nav {
		position: fixed;
		inset: 64px 0 auto 0;
		max-height: 0;
		overflow: hidden;
		background:
			radial-gradient(circle at top, rgba(212, 175, 55, 0.12), transparent 60%),
			linear-gradient(to bottom, rgba(5, 6, 8, 0.98), rgba(5, 6, 8, 0.98));
		border-bottom: 1px solid rgba(255, 255, 255, 0.04);
		transition: max-height var(--transition-slow);
	}

	.ech-header__nav-list {
		flex-direction: column;
		align-items: flex-start;
		padding: var(--space-20);
		gap: var(--space-16);
	}

	.ech-header__nav-item--cta {
		width: 100%;
	}

	.ech-header__nav-item--cta .ech-header__nav-link--cta {
		display: inline-flex;
		width: 100%;
		justify-content: center;
	}

	.ech-header__nav--open {
		max-height: 320px;
	}
}

@media (max-width: 520px) {
	.ech-header__logo-text {
		font-size: var(--font-size-md);
		letter-spacing: 0.14em;
	}
}