/* =========================================================================
   Header + Navigation
   ========================================================================= */

.syka-header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 1000;
	padding: 20px 0;
	background: transparent;
	border-bottom: 1px solid transparent;
	transition: background 0.4s ease, border-color 0.4s ease, padding 0.4s ease, backdrop-filter 0.4s ease;
}

.syka-header.is-scrolled {
	padding: 12px 0;
	background: rgba(10, 10, 13, 0.72);
	backdrop-filter: blur(16px) saturate(140%);
	-webkit-backdrop-filter: blur(16px) saturate(140%);
	border-bottom: 1px solid var(--syka-border);
}

.syka-header__inner {
	max-width: 1360px;
	margin-inline: auto;
	padding-inline: 32px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
}

.syka-header__logo { display: inline-flex; align-items: center; }
.syka-header__logo img { height: 32px; width: auto; }
.syka-header__logo-text {
	font-weight: 800;
	font-size: 22px;
	letter-spacing: -0.02em;
	color: var(--syka-text);
}
.syka-header__logo-text::after {
	content: '';
	display: inline-block;
	width: 6px;
	height: 6px;
	margin-left: 4px;
	border-radius: 50%;
	background: var(--syka-accent);
	vertical-align: super;
}

.syka-nav { display: flex; }
.syka-nav__list { display: flex; align-items: center; gap: 4px; }
.syka-nav__item { position: relative; }
.syka-nav__link {
	position: relative;
	display: inline-block;
	padding: 8px 14px;
	font-size: 14px;
	font-weight: 500;
	color: var(--syka-muted);
	transition: color 0.25s ease;
}
.syka-nav__link::after {
	content: '';
	position: absolute;
	left: 14px;
	right: 14px;
	bottom: 4px;
	height: 1px;
	background: var(--syka-accent);
	transform: scaleX(0);
	transform-origin: left;
	transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.syka-nav__link:hover,
.syka-nav__link.is-active { color: var(--syka-text); }
.syka-nav__link:hover::after,
.syka-nav__link.is-active::after { transform: scaleX(1); }

.syka-header__actions { display: flex; align-items: center; gap: 14px; }

/* ---------- Mobile menu toggle ---------- */
.syka-menu-toggle {
	display: none;
	width: 44px;
	height: 44px;
	align-items: center;
	justify-content: center;
	border-radius: 50%;
	border: 1px solid var(--syka-border);
}
.syka-menu-toggle__bars {
	display: flex;
	flex-direction: column;
	gap: 5px;
	width: 18px;
}
.syka-menu-toggle__bars span {
	display: block;
	height: 1.5px;
	background: var(--syka-text);
	transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
}
.syka-menu-toggle[aria-expanded="true"] .syka-menu-toggle__bars span:first-child {
	transform: translateY(3.25px) rotate(45deg);
}
.syka-menu-toggle[aria-expanded="true"] .syka-menu-toggle__bars span:last-child {
	transform: translateY(-3.25px) rotate(-45deg);
}

/* ---------- Full-screen mobile nav ---------- */
.syka-mobile-nav {
	position: fixed;
	inset: 0;
	z-index: 999;
	background: var(--syka-bg);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 40px;
	opacity: 0;
	visibility: hidden;
	transform: translateY(-16px);
	transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.4s;
}
.syka-mobile-nav.is-open {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}
.syka-mobile-nav .syka-nav__list {
	flex-direction: column;
	gap: 6px;
	text-align: center;
}
.syka-mobile-nav .syka-nav__link {
	font-size: clamp(26px, 6vw, 36px);
	font-weight: 600;
	color: var(--syka-text);
	padding: 10px 0;
}
.syka-mobile-nav .syka-nav__link::after { display: none; }
.syka-mobile-nav .syka-nav__link:hover { color: var(--syka-accent); }

body.syka-nav-open { overflow: hidden; }