/* ==========================================================================
   Pagina Portfolio — griglia editoriale dei casi studio
   Mobile first. I token di colore arrivano da style.css (:root del child theme).

   NOTA SULLA SPECIFICITA'
   Ogni selettore e' annidato sotto .wifor-portfolio non per vezzo ma per
   necessita': il kit globale di Elementor dichiara regole come
   ".elementor-kit-20 h1 { color: var(--e-global-color-text) }" (0,1,1), che
   batterebbero una classe singola (0,1,0). Annidare porta a 0,2,0 e permette di
   restare fuori da !important.
   ========================================================================== */

.wifor-portfolio {
	--pf-radius: 20px;
	--pf-offset: 0rem;
	--pf-col-gap: 1.5rem;
	--pf-row-gap: 3rem;
	--pf-blu: var(--wifor-blu, #1a4455);
	--pf-blu-scuro: var(--wifor-blu-scuro, #0b1e26);
	--pf-giallo: var(--wifor-giallo, #f5c55f);
	--pf-chiaro: var(--wifor-chiaro, #f8fafc);

	background: var(--pf-chiaro);
	/* Il padding superiore deve superare l'header, che e' position: fixed e alto
	   circa 82px: su mobile un clamp che partiva da 3rem faceva finire il logo
	   sopra il titolo. */
	padding: clamp(8rem, 10vw, 12rem) clamp(1.25rem, 5vw, 4rem) clamp(4rem, 10vw, 9rem);
	font-family: var(--font-primario, system-ui, sans-serif);
}

/* --------------------------------------------------------- Intro */

.wifor-portfolio .wifor-portfolio__intro {
	max-width: 1440px;
	margin: 0 auto clamp(2.5rem, 6vw, 4.5rem);
	text-align: center;
}

.wifor-portfolio .wifor-portfolio__title {
	margin: 0;
	color: var(--pf-blu);
	font-size: clamp(2.75rem, 11vw, 7.5rem);
	line-height: 0.95;
	font-weight: 700;
	letter-spacing: -0.02em;
	text-transform: uppercase;
}

.wifor-portfolio .wifor-portfolio__lead {
	max-width: 46ch;
	margin: clamp(1rem, 3vw, 1.75rem) auto 0;
	color: color-mix(in srgb, var(--pf-blu) 70%, transparent);
	font-size: clamp(0.95rem, 1.6vw, 1.0625rem);
	line-height: 1.7;
}

/* --------------------------------------------------------- Filtri */

.wifor-portfolio .wifor-portfolio__filters {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 0.625rem;
	max-width: 1440px;
	margin: 0 auto clamp(2.5rem, 6vw, 4.5rem);
}

.wifor-portfolio .wifor-filter {
	display: inline-flex;
	align-items: baseline;
	gap: 0.4em;
	padding: 0.6rem 1.15rem;
	border: 1px solid color-mix(in srgb, var(--pf-blu) 22%, transparent);
	border-radius: 999px;
	background: transparent;
	color: var(--pf-blu);
	font-family: inherit;
	font-size: 0.875rem;
	font-weight: 400;
	line-height: 1;
	cursor: pointer;
	transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
	-webkit-tap-highlight-color: transparent;
}

.wifor-portfolio .wifor-filter__count {
	font-size: 0.6875rem;
	opacity: 0.55;
	font-variant-numeric: tabular-nums;
}

.wifor-portfolio .wifor-filter:hover,
.wifor-portfolio .wifor-filter:focus-visible {
	border-color: var(--pf-giallo);
	background: color-mix(in srgb, var(--pf-giallo) 16%, transparent);
	color: var(--pf-blu);
}

.wifor-portfolio .wifor-filter.is-active {
	background: var(--pf-giallo);
	border-color: var(--pf-giallo);
	color: var(--pf-blu-scuro);
	font-weight: 600;
}

.wifor-portfolio .wifor-filter.is-active .wifor-filter__count {
	opacity: 0.7;
}

/* --------------------------------------------------------- Griglia */

.wifor-portfolio .wifor-portfolio__grid {
	display: grid;
	grid-template-columns: repeat(12, 1fr);
	column-gap: var(--pf-col-gap);
	row-gap: var(--pf-row-gap);
	max-width: 1440px;
	margin: 0 auto;
	transition: opacity 0.25s ease;
}

.wifor-portfolio .wifor-portfolio__grid.is-swapping {
	opacity: 0.25;
}

/* Il respiro verticale generoso serve allo schema editoriale, dove le card
   sfalsate hanno bisogno di aria. In modalita' filtrata la griglia e' uniforme e
   va scansionata: lo stesso gap la farebbe sembrare vuota. */
.wifor-portfolio .wifor-portfolio__grid.is-filtered {
	row-gap: clamp(2.5rem, 4vw, 4rem);
}

/* Mobile: colonna singola, nessuno sfalsamento, tutte orizzontali. */
.wifor-portfolio .wifor-project {
	grid-column: 1 / -1;
	margin-top: 0;
	opacity: 0;
	transform: translateY(28px);
	transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.wifor-portfolio .wifor-project.is-visible {
	opacity: 1;
	transform: none;
}

.wifor-portfolio .wifor-project:nth-child(even) {
	transition-delay: 90ms;
}

.wifor-portfolio .wifor-project[hidden] {
	display: none !important;
}

.wifor-portfolio .wifor-project__link {
	display: block;
	text-decoration: none;
	color: inherit;
}

.wifor-portfolio .wifor-project__media {
	display: block;
	position: relative;
	overflow: hidden;
	border-radius: var(--pf-radius);
	aspect-ratio: 3 / 2;
	background: var(--wifor-project-colore, color-mix(in srgb, var(--pf-blu) 12%, transparent));
}

.wifor-portfolio .wifor-project__img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* La copertina verticale esiste in DOM ma resta nascosta finche' non serve:
   display:none azzera il box di layout, quindi il lazy loading non la scarica. */
.wifor-portfolio .wifor-project__img--v {
	display: none;
}

.wifor-portfolio .wifor-project__link:hover .wifor-project__img,
.wifor-portfolio .wifor-project__link:focus-visible .wifor-project__img {
	transform: scale(1.045);
}

.wifor-portfolio .wifor-project__link:focus-visible .wifor-project__media {
	outline: 3px solid var(--pf-giallo);
	outline-offset: 4px;
}

.wifor-portfolio .wifor-project__meta {
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	justify-content: space-between;
	gap: 0.5rem 1.5rem;
	margin-top: 1rem;
}

.wifor-portfolio .wifor-project__name {
	position: relative;
	color: var(--pf-blu);
	font-size: clamp(1.0625rem, 2vw, 1.375rem);
	font-weight: 600;
	line-height: 1.25;
}

.wifor-portfolio .wifor-project__name::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: -0.2em;
	width: 100%;
	height: 2px;
	background: var(--pf-giallo);
	transform: scaleX(0);
	transform-origin: left;
	transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.wifor-portfolio .wifor-project__link:hover .wifor-project__name::after,
.wifor-portfolio .wifor-project__link:focus-visible .wifor-project__name::after {
	transform: scaleX(1);
}

.wifor-portfolio .wifor-project__services {
	color: color-mix(in srgb, var(--pf-blu) 55%, transparent);
	font-size: 0.75rem;
	letter-spacing: 0.06em;
	text-transform: uppercase;
}

.wifor-portfolio .wifor-portfolio__empty {
	max-width: 1440px;
	margin: 3rem auto 0;
	color: color-mix(in srgb, var(--pf-blu) 60%, transparent);
	text-align: center;
}

/* ==========================================================================
   Da 640px: entra lo schema editoriale alternato.

   4n+1  colonne 1-7    orizzontale grande
   4n+2  colonne 9-12   verticale stretta, sfalsata in basso
   4n+3  colonne 1-4    verticale stretta, sfalsata in basso
   4n    colonne 6-12   orizzontale grande

   La card stretta scende sempre, da qualunque lato si trovi: lo zigzag si legge
   come una scelta e non come un errore di allineamento.
   ========================================================================== */

@media (min-width: 640px) {

	.wifor-portfolio {
		--pf-offset: 3rem;
		--pf-row-gap: 4rem;
	}

	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 1) {
		grid-column: 1 / span 7;
	}

	/* Su tablet la colonna stretta usa 5 colonne su 12 invece di 4: con 4 la card
	   verticale scendeva sotto i 210px e le immagini diventavano francobolli. */
	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 2) {
		grid-column: 8 / span 5;
		margin-top: var(--pf-offset);
	}

	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 3) {
		grid-column: 1 / span 5;
		margin-top: var(--pf-offset);
	}

	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n) {
		grid-column: 6 / span 7;
	}

	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 2) .wifor-project__media,
	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 3) .wifor-project__media {
		aspect-ratio: 3 / 4;
	}

	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 2) .wifor-project__img--h,
	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 3) .wifor-project__img--h {
		display: none;
	}

	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 2) .wifor-project__img--v,
	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 3) .wifor-project__img--v {
		display: block;
	}

	/* Numero dispari di progetti: l'ultimo resta spaiato e diventa una card
	   panoramica a tutta larghezza. Chiude la pagina invece di lasciare un buco. */
	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:last-child:nth-child(odd) {
		grid-column: 1 / -1;
		margin-top: 0;
	}

	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:last-child:nth-child(odd) .wifor-project__media {
		aspect-ratio: 21 / 9;
	}

	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:last-child:nth-child(odd) .wifor-project__img--h {
		display: block;
	}

	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:last-child:nth-child(odd) .wifor-project__img--v {
		display: none;
	}

	/* Modalita' filtrata: due colonne uniformi. */
	.wifor-portfolio .wifor-portfolio__grid.is-filtered .wifor-project {
		grid-column: span 6;
		margin-top: 0;
	}
}

@media (min-width: 1024px) {

	.wifor-portfolio {
		--pf-offset: 7rem;
		--pf-col-gap: 2.5rem;
		--pf-row-gap: 6rem;
	}

	/* Da desktop la colonna stretta torna a 4 su 12: c'e' larghezza a sufficienza
	   e il contrasto fra card larga e stretta si legge meglio. */
	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 2) {
		grid-column: 9 / span 4;
	}

	.wifor-portfolio .wifor-portfolio__grid:not(.is-filtered) .wifor-project:nth-child(4n + 3) {
		grid-column: 1 / span 4;
	}

	/* Modalita' filtrata: tre colonne uniformi, come nel riferimento. */
	.wifor-portfolio .wifor-portfolio__grid.is-filtered .wifor-project {
		grid-column: span 4;
	}
}

@media (min-width: 1440px) {

	.wifor-portfolio {
		--pf-offset: 9rem;
		--pf-row-gap: 7.5rem;
	}
}

/* --------------------------------------------------------- Accessibilita' */

@media (prefers-reduced-motion: reduce) {

	.wifor-portfolio .wifor-project,
	.wifor-portfolio .wifor-project__img,
	.wifor-portfolio .wifor-project__name::after,
	.wifor-portfolio .wifor-portfolio__grid {
		transition: none !important;
	}

	.wifor-portfolio .wifor-project {
		opacity: 1;
		transform: none;
	}

	.wifor-portfolio .wifor-project__link:hover .wifor-project__img {
		transform: none;
	}
}