:root {
	--header-bg: #1a2633;
	--header-bg-alt: #1f3247;
	--header-text: #e9f1fb;
	--header-accent: #e6edf7;
	--header-divider: rgba(255, 255, 255, 0.25);
	--header-active-bg: rgba(255, 255, 255, 0.22);
	--header-active-border: rgba(255, 255, 255, 0.5);
}

.page-header {
	position: sticky;
	top: 0;
	z-index: 1000;
	background: linear-gradient(120deg, var(--header-bg), var(--header-bg-alt));
	box-shadow: 0 6px 16px rgba(10, 20, 30, 0.18);
	width: 100vw;
	box-sizing: border-box;
	margin-left: calc(50% - 50vw);
	margin-right: calc(50% - 50vw);
	margin-bottom: 12px;
}

.page-header .header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	padding: 10px 24px;
	max-width: 1400px;
	margin: 0 auto;
	background-color: transparent;
	box-shadow: none;
	box-sizing: border-box;
	min-height: 52px;
	width: 100%;
}

.page-header .header h1 {
	color: var(--header-text);
	margin: 0;
	font-size: 0.95rem;
	font-weight: 600;
	letter-spacing: 0.2px;
	display: inline-flex;
	align-items: center;
	gap: 8px;
}

.page-header .header h1 i {
	color: var(--header-accent);
	font-size: 1rem;
}

.page-header .header nav {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
}

.page-header .header nav a {
	color: var(--header-text);
	padding: 6px 12px;
	text-decoration: none;
	border-radius: 999px;
	border: 1px solid transparent;
	transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, color 0.2s ease;
	display: inline-flex;
	align-items: center;
	gap: 6px;
	font-size: 0.82rem;
	font-weight: 500;
	letter-spacing: 0.1px;
}

.page-header .header nav a:hover {
	background-color: rgba(255, 255, 255, 0.12);
	border-color: rgba(255, 255, 255, 0.25);
	transform: translateY(-1px);
	color: #ffffff;
}

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

.page-header .header nav a.active,
.page-header .header nav a[aria-current="page"] {
	background-color: var(--header-active-bg);
	border-color: var(--header-active-border);
	color: #ffffff;
	box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.header-divider {
	height: 1px;
	border: 0;
	margin: 0;
	background: linear-gradient(90deg, transparent, var(--header-divider), transparent);
}

@media (max-width: 900px) {
	.page-header .header {
		flex-direction: column;
		align-items: flex-start;
		padding: 10px 16px;
	}

	.page-header .header nav {
		width: 100%;
	}
}

@media (max-width: 540px) {
	.page-header .header {
		padding: 8px 12px;
		min-height: 48px;
	}

	.page-header .header nav a {
		font-size: 0.78rem;
		padding: 5px 10px;
	}
}