/**
 * Header sticky / shrink — Travel4Sports
 * Transições só em CSS (fundo, blur, altura).
 */

body.t4s-has-hero {
	--t4s-header-ease: cubic-bezier(0.22, 1, 0.36, 1);
	--t4s-header-speed: 0.5s;
	--header-sticky-animation-speed: var(--t4s-header-speed);
}

body.t4s-has-hero #header {
	position: absolute;
	inset: 0 0 auto;
	z-index: 100;
	background: transparent;
	transform: none !important;
}

body.t4s-has-hero #header [data-sticky],
body.t4s-has-hero #header [data-sticky*='yes'],
body.t4s-has-hero #header [data-sticky*='fixed'] {
	z-index: 100;
}

/* Linha do header: fundo real via ::before (anima opacity, não “salta” no preto) */
body.t4s-has-hero #header [data-row] {
	position: relative;
	isolation: isolate;
	background: transparent !important;
	transition:
		height var(--t4s-header-speed) var(--t4s-header-ease),
		min-height var(--t4s-header-speed) var(--t4s-header-ease),
		padding var(--t4s-header-speed) var(--t4s-header-ease) !important;
}

body.t4s-has-hero #header [data-row]::before {
	content: '';
	position: absolute;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	background: rgba(0, 0, 0, 0.58);
	backdrop-filter: saturate(140%) blur(16px);
	-webkit-backdrop-filter: saturate(140%) blur(16px);
	box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
	opacity: 0;
	transition:
		opacity var(--t4s-header-speed) var(--t4s-header-ease),
		backdrop-filter var(--t4s-header-speed) var(--t4s-header-ease),
		-webkit-backdrop-filter var(--t4s-header-speed) var(--t4s-header-ease);
}

body.t4s-has-hero #header [data-row] > * {
	position: relative;
	z-index: 1;
}

/* Sticky ativo → fundo aparece */
body.t4s-has-hero #header [data-sticky*='yes'] [data-row]::before {
	opacity: 1;
}

/* Voltar ao topo → fade out suave do fundo */
body.t4s-has-hero #header:not(:has([data-sticky*='yes'])) [data-row]::before {
	opacity: 0;
	backdrop-filter: blur(0);
	-webkit-backdrop-filter: blur(0);
	box-shadow: none;
}

/* Shrink / unshrink mais fluido */
body.t4s-has-hero #header [data-sticky],
body.t4s-has-hero #header .ct-sticky-container {
	transition:
		height var(--t4s-header-speed) var(--t4s-header-ease),
		min-height var(--t4s-header-speed) var(--t4s-header-ease) !important;
}

body.t4s-has-hero #header .site-logo-container img,
body.t4s-has-hero #header .site-logo-container svg,
body.t4s-has-hero #header .ct-logo img {
	transition:
		max-height var(--t4s-header-speed) var(--t4s-header-ease),
		height var(--t4s-header-speed) var(--t4s-header-ease),
		width var(--t4s-header-speed) var(--t4s-header-ease),
		transform var(--t4s-header-speed) var(--t4s-header-ease),
		opacity var(--t4s-header-speed) var(--t4s-header-ease) !important;
}

body.t4s-has-hero #header .ct-header-trigger,
body.t4s-has-hero #header .ct-header-cta,
body.t4s-has-hero #header .ct-header-text,
body.t4s-has-hero #header .menu > li > a {
	transition:
		color var(--t4s-header-speed) var(--t4s-header-ease),
		opacity var(--t4s-header-speed) var(--t4s-header-ease),
		transform var(--t4s-header-speed) var(--t4s-header-ease) !important;
}

@media (prefers-reduced-motion: reduce) {
	body.t4s-has-hero {
		--t4s-header-speed: 0.01ms;
	}
}