CustomHeader.astro

---
import Default from '@astrojs/starlight/components/SocialIcons.astro';
const base = import.meta.env.BASE_URL;
---

<nav class="custom-header-links" aria-label="Primary navigation">
	<a href={`${base}introduction/overview/`} class="header-link">Overview</a>
	<a href={`${base}getting-started/quick-start/`} class="header-link">Quick Start</a>
	<a href={`${base}reference/cli/`} class="header-link">CLI</a>
	<a href={`${base}guides/ui/`} class="header-link">UI</a>
	<a href={`${base}faq/`} class="header-link">FAQ</a>
</nav>

<!-- Hamburger menu for narrow viewports where full nav would overflow -->
<div class="tablet-nav-wrapper">
	<button class="hamburger-btn" aria-label="Toggle navigation menu" aria-expanded="false" aria-controls="tablet-nav-dropdown">
		<span class="hamburger-icon" aria-hidden="true"></span>
	</button>
	<nav class="tablet-dropdown" id="tablet-nav-dropdown" aria-label="Primary navigation" hidden>
		<a href={`${base}introduction/overview/`} class="dropdown-link">Overview</a>
		<a href={`${base}getting-started/quick-start/`} class="dropdown-link">Quick Start</a>
		<a href={`${base}reference/cli/`} class="dropdown-link">CLI</a>
		<a href={`${base}guides/ui/`} class="dropdown-link">UI</a>
		<a href={`${base}faq/`} class="dropdown-link">FAQ</a>
	</nav>
</div>

<Default {...Astro.props} />

<style>
	.custom-header-links {
		display: flex;
		align-items: center;
		gap: 1rem;
		margin-right: 1rem;
	}

	.header-link {
		color: var(--sl-color-text);
		text-decoration: none;
		font-size: 0.875rem;
		font-weight: 500;
		padding: 0.25rem 0.75rem;
		border-radius: 4px;
		transition: color 0.15s ease, background-color 0.15s ease;
		white-space: nowrap;
	}

	.header-link:hover {
		color: var(--sl-color-text-accent);
		background-color: rgba(110, 118, 129, 0.1);
	}

	/* Tablet navigation — hidden by default; shown via global CSS at narrow widths */
	.tablet-nav-wrapper {
		display: none;
		position: relative;
		margin-right: 0.5rem;
	}

	.hamburger-btn {
		background: none;
		border: none;
		cursor: pointer;
		padding: 0.5rem;
		color: var(--sl-color-text);
		border-radius: 4px;
		min-height: 44px;
		min-width: 44px;
		display: inline-flex;
		align-items: center;
		justify-content: center;
	}

	.hamburger-btn:hover {
		background-color: rgba(110, 118, 129, 0.1);
	}

	.hamburger-icon {
		display: block;
		width: 20px;
		height: 2px;
		background: currentColor;
		position: relative;
	}

	.hamburger-icon::before,
	.hamburger-icon::after {
		content: '';
		display: block;
		width: 20px;
		height: 2px;
		background: currentColor;
		position: absolute;
		left: 0;
	}

	.hamburger-icon::before { top: -6px; }
	.hamburger-icon::after  { top:  6px; }

	.tablet-dropdown {
		position: absolute;
		top: calc(100% + 0.5rem);
		right: 0;
		background: var(--sl-color-bg-nav, #161b22);
		border: 1px solid rgba(48, 54, 61, 0.8);
		border-radius: 8px;
		padding: 0.5rem 0;
		min-width: 180px;
		z-index: 100;
		box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
	}

	.dropdown-link {
		display: block;
		padding: 0.625rem 1rem;
		color: var(--sl-color-text);
		text-decoration: none;
		font-size: 0.875rem;
		font-weight: 500;
		transition: background-color 0.15s ease;
	}

	.dropdown-link:hover {
		background-color: rgba(110, 118, 129, 0.1);
		color: var(--sl-color-text-accent);
	}
</style>

<script>
	let hamburgerAbort: AbortController | undefined;

	function initHamburgerMenu() {
		hamburgerAbort?.abort();
		hamburgerAbort = new AbortController();
		const { signal } = hamburgerAbort;

		const hamburgerBtn = document.querySelector<HTMLButtonElement>('.hamburger-btn');
		const tabletDropdown = document.querySelector<HTMLElement>('.tablet-dropdown');

		if (!hamburgerBtn || !tabletDropdown) return;

		hamburgerBtn.addEventListener('click', (e) => {
			e.stopPropagation();
			const isOpen = hamburgerBtn.getAttribute('aria-expanded') === 'true';
			hamburgerBtn.setAttribute('aria-expanded', String(!isOpen));
			tabletDropdown.hidden = isOpen;
			if (!isOpen) {
				const firstLink = tabletDropdown.querySelector<HTMLAnchorElement>('.dropdown-link');
				firstLink?.focus();
			}
		}, { signal });

		document.addEventListener('click', (e) => {
			if (!hamburgerBtn.contains(e.target as Node) && !tabletDropdown.contains(e.target as Node)) {
				hamburgerBtn.setAttribute('aria-expanded', 'false');
				tabletDropdown.hidden = true;
			}
		}, { signal });

		document.addEventListener('keydown', (e) => {
			if (e.key === 'Escape' && hamburgerBtn.getAttribute('aria-expanded') === 'true') {
				hamburgerBtn.setAttribute('aria-expanded', 'false');
				tabletDropdown.hidden = true;
				hamburgerBtn.focus();
			}
		}, { signal });
	}

	initHamburgerMenu();
	document.addEventListener('astro:page-load', initHamburgerMenu);
</script>