/* Header-specific styles for Aleksandra Bou Karam
   Builds on base.css global header styles
*/

.shell-header {
	position: sticky;
	top: 0;
	z-index: 50;
}

.shell-header__inner {
	position: relative;
}

.shell-header__logo {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
}

.shell-header__logo-mark {
	font-size: 0.9rem;
	color: var(--color-highlight);
}

.shell-header__logo-text {
	letter-spacing: 0.24em;
	text-transform: uppercase;
	font-size: 0.85rem;
}

/* Mobile menu toggle */
.shell-header__menu-toggle {
	display: none;
	z-index: 111;
	align-items: center;
	gap: 0.65rem;
	padding: 0.35rem 0.75rem;
	border-radius: var(--radius-pill);
	border: 1px solid rgba(255, 255, 255, 0.18);
	background: radial-gradient(
		circle at top,
		rgba(255, 255, 255, 0.06),
		transparent 60%
	);
	color: var(--gray-100);
	font-size: var(--font-size-xs);
	letter-spacing: 0.18em;
	text-transform: uppercase;
}

.shell-header__menu-toggle-box {
	width: 1.25rem;
	height: 1.1rem;
	display: inline-flex;
	flex-direction: column;
	justify-content: space-between;
}

.shell-header__menu-toggle-line {
	height: 2px;
	border-radius: 999px;
	background: linear-gradient(
		90deg,
		var(--color-highlight),
		var(--color-accent)
	);
	transition:
		transform var(--transition-medium),
		opacity var(--transition-medium),
		width var(--transition-medium);
}

.shell-header__menu-toggle-text {
	white-space: nowrap;
}

.shell-header__menu-toggle:focus-visible {
	outline: 2px solid var(--color-accent);
	outline-offset: 3px;
}

/* Overlay used when mobile menu is open */
.shell-header__mobile-overlay {
	position: fixed;
	inset: 0;
	background: radial-gradient(
		circle at top,
		rgba(16, 24, 40, 0.96),
		rgba(11, 15, 22, 0.98)
	);
	opacity: 0;
	visibility: hidden;
	transition: opacity var(--transition-medium);
}

/* Mobile nav panel (leveraging existing nav structure) */
@media (max-width: 900px) {
	.shell-header__menu-toggle {
		display: inline-flex;
	}

	.shell-header__nav {
		position: fixed;
		inset: var(--nav-height) 0 auto 0;
		background: linear-gradient(
			180deg,
			rgba(11, 15, 22, 0.98),
			rgba(11, 15, 22, 0.98)
		);
		transform: translateY(-8px);
		opacity: 0;
		visibility: hidden;
		transition:
			opacity var(--transition-medium),
			transform var(--transition-medium);
	}

	.shell-header__nav-list {
		display: flex;
		flex-direction: column;
		align-items: center;
		gap: 1.25rem;
		padding: 1.5rem 1.25rem 2rem;
	}

	.shell-header__nav-link {
		font-size: 0.95rem;
		letter-spacing: 0.18em;
	}

	/* When JS adds the open class */
	.shell-header--menu-open .shell-header__nav {
		opacity: 1;
		visibility: visible;
		transform: translateY(0);
	}

	.shell-header--menu-open .shell-header__mobile-overlay {
		opacity: 1;
		visibility: visible;
	}

	.shell-header--menu-open .shell-header__menu-toggle-line:first-child {
		transform: translateY(5px) rotate(45deg);
	}

	.shell-header--menu-open .shell-header__menu-toggle-line:last-child {
		transform: translateY(-5px) rotate(-45deg);
		width: 100%;
	}
}

/* Desktop nav refinements */
@media (min-width: 901px) {
	.shell-header__menu-toggle {
		display: none;
	}

	.shell-header__mobile-overlay {
		display: none;
	}

	.shell-header__nav-list {
		padding-inline: 0.5rem;
	}

	.shell-header__nav-link {
		font-size: 0.8rem;
	}
}