/* Header styles for CEZARY XU - MENTORA */

.esc-header {
	position: sticky;
	top: 0;
	z-index: 40;
	backdrop-filter: blur(18px);
	background: linear-gradient(
		180deg,
		rgba(5, 7, 11, 0.98),
		rgba(5, 7, 11, 0.92)
	);
	border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.esc-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding-top: var(--space-3);
	padding-bottom: var(--space-3);
	gap: var(--space-4);
}

.esc-header__brand {
	display: flex;
	align-items: center;
	min-width: 0;
}

.esc-header__logo-link {
	display: inline-flex;
	align-items: center;
	gap: var(--space-3);
}

.esc-header__logo-mark {
	width: 36px;
	height: 36px;
	border-radius: 50%;
	background: conic-gradient(
		from 220deg,
		rgba(242, 193, 86, 0.1),
		rgba(242, 193, 86, 0.9),
		rgba(5, 7, 11, 1)
	);
	box-shadow:
		0 0 0 1px rgba(242, 193, 86, 0.2),
		var(--shadow-subtle);
	position: relative;
}

.esc-header__logo-mark::after {
	content: "ES";
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	font-family: var(--font-display);
	font-size: 0.85rem;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: #1b1307;
}

.esc-header__title-group {
	display: flex;
	flex-direction: column;
}

.esc-header__site-name {
	font-family: var(--font-display);
	font-size: 1.1rem;
	line-height: var(--line-height-tight);
	letter-spacing: 0.14em;
	text-transform: uppercase;
}

.esc-header__tagline {
	font-size: var(--font-size-xs);
	color: var(--color-text-muted);
	letter-spacing: 0.08em;
	text-transform: uppercase;
}

/* Navigation */

.esc-header__nav {
	display: flex;
	align-items: center;
}

.esc-header__nav-list {
	list-style: none;
	display: flex;
	align-items: center;
	gap: var(--space-4);
	margin: 0;
	padding: 0;
}

.esc-header__nav-link {
	position: relative;
	font-size: var(--font-size-sm);
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--color-text-muted);
	padding: 0.25rem 0;
	transition:
		color var(--transition-base),
		opacity var(--transition-base);
}

.esc-header__nav-link::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: -0.4rem;
	width: 0;
	height: 2px;
	background: linear-gradient(90deg, var(--color-primary-strong), transparent);
	transition: width var(--transition-base);
	opacity: 0.9;
}

.esc-header__nav-link:hover,
.esc-header__nav-link:focus-visible {
	color: var(--color-primary-strong);
}

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

.esc-header__nav-item--accent .esc-header__nav-link {
	padding: 0.55rem 1.4rem;
	border-radius: var(--radius-pill);
	border: 1px solid rgba(216, 164, 58, 0.8);
	background: radial-gradient(
		circle at top left,
		rgba(242, 193, 86, 0.2),
		rgba(5, 7, 11, 0.9)
	);
	color: #ffffff;
	box-shadow: var(--shadow-soft);
}

.esc-header__nav-link--cta::after {
	display: none;
}

.esc-header__nav-item--accent .esc-header__nav-link:hover,
.esc-header__nav-item--accent .esc-header__nav-link:focus-visible {
	color: #1b1307;
	background: linear-gradient(135deg, #f2c156, #d4912f);
}

/* Mobile toggle */

.esc-header__nav-toggle {
	display: none;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 4px;
	width: 42px;
	height: 42px;
	border-radius: 999px;
	border: 1px solid rgba(255, 255, 255, 0.16);
	background-color: rgba(5, 7, 11, 0.9);
	color: var(--color-text);
	cursor: pointer;
	position: relative;
}

.esc-header__nav-toggle-bar {
	width: 18px;
	height: 2px;
	border-radius: 999px;
	background-color: var(--color-text);
	transition:
		transform var(--transition-base),
		opacity var(--transition-base),
		background-color var(--transition-base);
}

.esc-header__nav-toggle-label {
	position: absolute;
	bottom: -1.25rem;
	font-size: 0.65rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--color-text-muted);
}

.esc-header__nav-toggle:focus-visible {
	outline: 2px solid var(--color-primary-strong);
	outline-offset: 2px;
}

/* Mobile behavior */

@media (max-width: 900px) {
	.esc-header__inner {
		padding-top: var(--space-3);
		padding-bottom: var(--space-3);
	}

	.esc-header__nav-toggle {
		display: inline-flex;
	}

	.esc-header__nav {
		position: fixed;
		inset: 56px 0 auto 0;
		background: radial-gradient(
			circle at top left,
			rgba(216, 164, 58, 0.13),
			rgba(5, 7, 11, 0.97)
		);
		border-bottom: 1px solid rgba(255, 255, 255, 0.08);
		transform: translateY(-105%);
		opacity: 0;
		visibility: hidden;
		transition:
			transform var(--transition-base),
			opacity var(--transition-base),
			visibility var(--transition-base);
	}

	.esc-header__nav-list {
		flex-direction: column;
		align-items: flex-start;
		padding: var(--space-4);
		gap: var(--space-3);
	}

	.esc-header__nav-item--accent {
		align-self: stretch;
	}

	.esc-header__nav-item--accent .esc-header__nav-link {
		display: inline-flex;
		width: 100%;
		justify-content: center;
		text-align: center;
	}

	.esc-header__nav-link {
		font-size: var(--font-size-sm);
	}

	.esc-header__nav-link::after {
		bottom: -0.2rem;
	}

	.esc-header--menu-open .esc-header__nav {
		transform: translateY(0);
		opacity: 1;
		visibility: visible;
	}

	.esc-header--menu-open .esc-header__nav-toggle-bar:nth-child(1) {
		transform: translateY(6px) rotate(45deg);
	}

	.esc-header--menu-open .esc-header__nav-toggle-bar:nth-child(2) {
		opacity: 0;
	}

	.esc-header--menu-open .esc-header__nav-toggle-bar:nth-child(3) {
		transform: translateY(-6px) rotate(-45deg);
	}
}

/* Reduced motion */

@media (prefers-reduced-motion: reduce) {
	.esc-header__nav,
	.esc-header__nav-toggle-bar {
		transition: none;
	}
}