( function () {
	// Cabecera: borde y sombra al desplazarse (se nota con la cabecera fija).
	var header = document.querySelector( '.ga-header' );
	if ( header ) {
		var onScroll = function () { header.classList.toggle( 'is-scrolled', window.scrollY > 8 ); };
		window.addEventListener( 'scroll', onScroll, { passive: true } );
		onScroll();
	}

	var toggle = document.querySelector( '.ga-menu-toggle' );
	var nav = document.getElementById( 'ga-nav' );
	if ( toggle && nav ) {
		toggle.addEventListener( 'click', function () {
			var open = nav.classList.toggle( 'is-open' );
			toggle.setAttribute( 'aria-expanded', open ? 'true' : 'false' );
		} );
		document.addEventListener( 'keydown', function ( e ) {
			if ( e.key === 'Escape' && nav.classList.contains( 'is-open' ) ) {
				nav.classList.remove( 'is-open' );
				toggle.setAttribute( 'aria-expanded', 'false' );
				toggle.focus();
			}
		} );
	}

	// Pestañas segmentadas con enlaces: la píldora se desliza a la pulsada mientras carga la página.
	document.querySelectorAll( '.ga-segmented' ).forEach( function ( group ) {
		group.addEventListener( 'click', function ( e ) {
			var tab = e.target.closest( '.ga-tab' );
			if ( ! tab || e.metaKey || e.ctrlKey || e.shiftKey ) { return; }
			group.querySelectorAll( '.ga-tab' ).forEach( function ( t ) { t.classList.toggle( 'is-active', t === tab ); } );
		} );
	} );

	// Filtros del listado: los <select> envían el formulario al cambiar.
	document.querySelectorAll( '.ga-filters select' ).forEach( function ( select ) {
		select.addEventListener( 'change', function () {
			select.form.submit();
		} );
	} );
} )();

// Vídeo de portada: se detiene si el usuario prefiere menos movimiento.
( function () {
	var video = document.querySelector( '.ga-hero__bg video' );
	if ( video && window.matchMedia && window.matchMedia( '(prefers-reduced-motion: reduce)' ).matches ) {
		video.removeAttribute( 'autoplay' );
		video.pause();
	}
} )();

// Carruseles: desplazamiento con botones, ratón/táctil nativo (scroll-snap) y teclado.
( function () {
	document.querySelectorAll( '[data-ga-carousel]' ).forEach( function ( carousel ) {
		var track = carousel.querySelector( '.ga-carousel__track' );
		var buttons = carousel.querySelectorAll( '.ga-carousel__btn' );
		if ( ! track ) {
			return;
		}
		function update() {
			var max = track.scrollWidth - track.clientWidth - 2;
			buttons[ 0 ].disabled = track.scrollLeft <= 2;
			buttons[ 1 ].disabled = track.scrollLeft >= max;
			carousel.classList.toggle( 'is-static', max <= 0 );
		}
		buttons.forEach( function ( button ) {
			button.addEventListener( 'click', function () {
				track.scrollBy( { left: track.clientWidth * 0.9 * Number( button.dataset.dir ), behavior: 'smooth' } );
			} );
		} );
		track.addEventListener( 'keydown', function ( e ) {
			if ( e.key === 'ArrowRight' || e.key === 'ArrowLeft' ) {
				e.preventDefault();
				track.scrollBy( { left: ( e.key === 'ArrowRight' ? 1 : -1 ) * track.clientWidth * 0.9, behavior: 'smooth' } );
			}
		} );
		track.addEventListener( 'scroll', update, { passive: true } );
		window.addEventListener( 'resize', update );
		update();
	} );
} )();

// Ficha: miniaturas de la galería y copiar enlace.
( function () {
	var main = document.querySelector( '[data-ga-gallery-main] img' );
	document.querySelectorAll( '.ga-thumbs button' ).forEach( function ( btn ) {
		btn.addEventListener( 'click', function () {
			if ( ! main ) { return; }
			main.src = btn.dataset.full;
			main.removeAttribute( 'srcset' );
			document.querySelectorAll( '.ga-thumbs button' ).forEach( function ( b ) { b.removeAttribute( 'aria-current' ); } );
			btn.setAttribute( 'aria-current', 'true' );
		} );
	} );
	document.querySelectorAll( '[data-copy]' ).forEach( function ( btn ) {
		btn.addEventListener( 'click', function () {
			if ( navigator.clipboard ) {
				navigator.clipboard.writeText( btn.dataset.copy ).then( function () { btn.textContent = btn.dataset.done; } );
			}
		} );
	} );
} )();

// Formulario: campo «día y hora» solo cuando el motivo es pedir cita.
( function () {
	document.querySelectorAll( '.ga-form select[name="motivo"]' ).forEach( function ( select ) {
		var field = select.form.querySelector( '.ga-form__visit' );
		if ( ! field ) { return; }
		select.addEventListener( 'change', function () { field.hidden = select.value !== 'visita'; } );
	} );
} )();

// Cuestionario: guarda el borrador en este navegador hasta que se envía.
( function () {
	var done = document.querySelector( '[data-ga-clear-draft]' );
	try {
		if ( done ) { Object.keys( localStorage ).filter( function ( k ) { return k.indexOf( 'ga-cuestionario-' ) === 0; } ).forEach( function ( k ) { localStorage.removeItem( k ); } ); }
	} catch ( e ) {}
	document.querySelectorAll( 'form[data-ga-draft]' ).forEach( function ( form ) {
		var key = form.dataset.gaDraft, saved = {};
		try { saved = JSON.parse( localStorage.getItem( key ) || '{}' ); } catch ( e ) {}
		Array.prototype.forEach.call( form.elements, function ( el ) {
			if ( el.name && el.type !== 'hidden' && el.type !== 'checkbox' && saved[ el.name ] && ! el.value ) { el.value = saved[ el.name ]; }
		} );
		form.addEventListener( 'input', function () {
			var data = {};
			Array.prototype.forEach.call( form.elements, function ( el ) {
				if ( el.name && el.type !== 'hidden' && el.type !== 'checkbox' && el.name !== 'web' ) { data[ el.name ] = el.value; }
			} );
			try { localStorage.setItem( key, JSON.stringify( data ) ); } catch ( e ) {}
		} );
	} );
} )();