/* ===========================================================
   navigation.css — sticky header + primary nav + mobile drawer.
   =========================================================== */

.site-header {
	position: fixed; inset: 0 0 auto 0;
	z-index: var(--vc-z-header);
	display: flex; align-items: center; justify-content: space-between;
	padding: 18px 24px;
	transition: background var(--vc-dur) var(--vc-ease), backdrop-filter var(--vc-dur) var(--vc-ease), padding var(--vc-dur) var(--vc-ease);
}
@media (min-width: 768px) {
	.site-header { padding: 22px 32px; }
}
.site-header.is-scrolled {
	background: rgba(10,10,15,.72);
	backdrop-filter: saturate(180%) blur(16px);
	-webkit-backdrop-filter: saturate(180%) blur(16px);
	padding-top: 14px; padding-bottom: 14px;
}

.site-header__brand .brand,
.site-header__brand .brand--text {
	display: inline-flex; align-items: center;
	font-family: var(--vc-font-display);
	font-weight: 600; letter-spacing: -.02em;
	font-size: var(--vc-text-md); color: var(--vc-fg);
}
.site-header__brand img { max-height: 64px; width: auto; }

.site-nav { display: none; }
@media (min-width: 1024px) {
	.site-nav { display: block; }
}
.nav__list {
	display: flex; gap: var(--vc-s-6); align-items: center;
}
.nav__item .nav__link {
	display: inline-flex; align-items: center;
	padding: 8px 12px;
	font-size: var(--vc-text-sm);
	color: var(--vc-fg-soft);
	letter-spacing: -.01em;
	position: relative;
}
.nav__item .nav__link::after {
	content: ''; position: absolute;
	left: 12px; right: 12px; bottom: 4px;
	height: 1px; background: currentColor;
	transform: scaleX(0); transform-origin: left;
	transition: transform var(--vc-dur) var(--vc-ease-out);
}
.nav__item:hover .nav__link, .nav__item.is-current .nav__link { color: var(--vc-fg); }
.nav__item:hover .nav__link::after, .nav__item.is-current .nav__link::after { transform: scaleX(1); }

.nav__submenu {
	position: absolute; top: 100%; left: 0;
	display: none; min-width: 220px;
	padding: var(--vc-s-3); margin: 0;
	background: var(--vc-bg-alt); border: 1px solid var(--vc-line);
	border-radius: var(--vc-radius);
	flex-direction: column; gap: 2px;
}
.nav__item:hover > .nav__submenu, .nav__item:focus-within > .nav__submenu { display: flex; }

.site-header__actions { display: flex; align-items: center; gap: var(--vc-s-3); }
.site-header__cta { display: none; }
@media (min-width: 768px) { .site-header__cta { display: inline-flex; } }

/* Hamburger */
.hamburger {
	display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px;
	width: 44px; height: 44px;
	border: 1px solid var(--vc-line); border-radius: 999px;
	transition: border-color var(--vc-dur) var(--vc-ease);
}
.hamburger span {
	display: block; width: 18px; height: 1.5px;
	background: var(--vc-fg);
	transition: transform var(--vc-dur) var(--vc-ease), opacity var(--vc-dur) var(--vc-ease);
}
.hamburger:hover { border-color: var(--vc-fg); }
.hamburger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
@media (min-width: 1024px) { .hamburger { display: none; } }

/* Mobile drawer */
.mobile-nav {
	position: fixed; inset: 0;
	background: var(--vc-bg);
	z-index: var(--vc-z-mobile-nav);
	transform: translateX(100%);
	transition: transform var(--vc-dur-slow) var(--vc-ease-out);
	overflow-y: auto;
	padding: 92px 24px 32px;
}
.mobile-nav.is-open { transform: translateX(0); }
.mobile-nav__inner { display: flex; flex-direction: column; gap: var(--vc-s-12); height: 100%; }
.mobile-nav__list {
	display: flex; flex-direction: column; gap: var(--vc-s-2);
	font-family: var(--vc-font-display); font-size: clamp(2rem, 8vw, 3rem); letter-spacing: -.02em;
}
.mobile-nav__list a { display: block; padding: 10px 0; color: var(--vc-fg); }
.mobile-nav__list a:hover { color: var(--vc-accent); }
.mobile-nav__meta { margin-top: auto; padding-top: var(--vc-s-8); border-top: 1px solid var(--vc-line); color: var(--vc-muted); }
.mobile-nav__meta a { color: var(--vc-fg); }

/* Body class while mobile-nav open prevents scroll */
body.mobile-nav-open { overflow: hidden; }