/* Claudio Fusco — vocabolario condiviso nel mondo scuro.
   Ogni atomo ricostruito nella grammatica della materia in luce radente:
   nessuna card, nessun angolo arrotondato, la luce come unico ornamento. */

/* ---- Azioni ----
   Un comando qui è una soglia sottile che si accende, non una pillola piena. */

.cf-btn {
	display: inline-flex;
	align-items: center;
	gap: 1rem;
	padding: 1.05rem 1.75rem;
	font-family: var(--cf-font-meter);
	font-size: 0.6875rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	text-decoration: none;
	border: 1px solid var(--cf-bronze-line);
	color: var(--cf-bronze);
	background: transparent;
	cursor: pointer;
	position: relative;
	isolation: isolate;
	overflow: hidden;
	transition: color 0.5s var(--cf-ease), border-color 0.5s var(--cf-ease);
}

/* La luce entra dal basso come il bagliore che sale sulla crosta. */
.cf-btn::before {
	content: "";
	position: absolute;
	inset: 0;
	background: linear-gradient(to top, var(--cf-bronze), var(--cf-bronze-light));
	transform: translateY(101%);
	transition: transform 0.55s var(--cf-ease);
	z-index: -1;
}

.cf-btn:hover,
.cf-btn:focus-visible {
	color: var(--cf-void);
	border-color: var(--cf-bronze);
	text-decoration: none;
}

.cf-btn:hover::before,
.cf-btn:focus-visible::before {
	transform: translateY(0);
}

.cf-btn__tick {
	width: 2.5rem;
	height: 1px;
	background: currentColor;
	flex: none;
	transform: scaleX(0.6);
	transform-origin: left;
	transition: transform 0.55s var(--cf-ease);
}

.cf-btn:hover .cf-btn__tick {
	transform: scaleX(1);
}

.cf-btn--solid {
	background: var(--cf-bronze);
	border-color: var(--cf-bronze);
	color: var(--cf-void);
}

.cf-btn--solid::before {
	background: var(--cf-bone);
}

.cf-btn--quiet {
	border-color: var(--cf-edge);
	color: var(--cf-bone-dim);
}

.cf-btn--quiet::before {
	background: var(--cf-bone);
}

.cf-btn--quiet:hover,
.cf-btn--quiet:focus-visible {
	color: var(--cf-void);
	border-color: var(--cf-bone);
}

.cf-btn[disabled],
.cf-btn[aria-disabled="true"] {
	border-color: var(--cf-edge-soft);
	color: var(--cf-bone-faint);
	cursor: not-allowed;
	pointer-events: none;
}

/* ---- Testata ----
   Sospesa sul buio: nessun fondo pieno finché non serve. */

.cf-header {
	position: fixed;
	top: 0;
	inset-inline: 0;
	z-index: 40;
	transition: background-color 0.6s var(--cf-ease), border-color 0.6s var(--cf-ease);
	border-bottom: 1px solid transparent;
}

/* Velo permanente sotto la testata: il video del primo viewport ha zone
   chiarissime e senza questo la navigazione ci sparisce sopra. Il contrasto
   non può dipendere dal fotogramma che capita in quel momento. */
.cf-header::before {
	content: "";
	position: absolute;
	inset: -1px 0 auto 0;
	height: calc(var(--cf-header-h) * 2);
	background: linear-gradient(to bottom, rgba(10, 9, 8, 0.92), rgba(10, 9, 8, 0.55) 45%, transparent);
	pointer-events: none;
	z-index: -1;
	transition: opacity 0.6s var(--cf-ease);
}

.cf-header.is-settled::before {
	opacity: 0;
}

/* Il backdrop-filter è ricalcolato a ogni fotogramma di scorrimento: raggio
   contenuto e fondo più opaco danno lo stesso effetto a un costo minore. */
.cf-header.is-settled {
	background: color-mix(in srgb, var(--cf-void) 90%, transparent);
	backdrop-filter: blur(8px) saturate(1.3);
	border-bottom-color: var(--cf-edge-soft);
}

.cf-header__inner {
	min-height: var(--cf-header-h);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1.5rem;
}

.cf-logo {
	font-family: var(--cf-font-display);
	font-weight: 400;
	font-size: 1.25rem;
	letter-spacing: 0.02em;
	color: var(--cf-bone);
	text-decoration: none;
	display: inline-flex;
	align-items: baseline;
	gap: 0.85rem;
}

.cf-logo:hover {
	color: var(--cf-bronze);
}

.cf-logo__meta {
	font-family: var(--cf-font-meter);
	font-size: 0.5625rem;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--cf-bone-faint);
}

.cf-nav {
	display: flex;
	align-items: center;
	gap: clamp(1rem, 2.5vw, 2.5rem);
}

.cf-nav__list {
	display: flex;
	align-items: center;
	gap: clamp(1rem, 2.5vw, 2.5rem);
	list-style: none;
	margin: 0;
	padding: 0;
}

.cf-nav__list a {
	font-family: var(--cf-font-meter);
	font-size: 0.625rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--cf-bone-faint);
	text-decoration: none;
	padding-block: 0.4rem;
	position: relative;
}

.cf-nav__list a::after {
	content: "";
	position: absolute;
	inset-inline: 0;
	bottom: 0;
	height: 1px;
	background: var(--cf-bronze);
	transform: scaleX(0);
	transform-origin: left;
	transition: transform 0.45s var(--cf-ease);
}

.cf-nav__list a:hover,
.cf-nav__list a[aria-current="true"] {
	color: var(--cf-bone);
}

.cf-nav__list a:hover::after,
.cf-nav__list a[aria-current="true"]::after {
	transform: scaleX(1);
}

.cf-nav-toggle {
	display: none;
	flex-direction: column;
	justify-content: center;
	gap: 6px;
	width: 2.75rem;
	height: 2.75rem;
	padding: 0;
	background: transparent;
	border: 1px solid var(--cf-edge);
	cursor: pointer;
}

.cf-nav-toggle span {
	display: block;
	width: 1.15rem;
	height: 1px;
	margin-inline: auto;
	background: var(--cf-bone);
	transition: transform 0.35s var(--cf-ease), opacity 0.25s var(--cf-ease);
}

.cf-nav-toggle[aria-expanded="true"] span:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}

.cf-nav-toggle[aria-expanded="true"] span:nth-child(2) {
	opacity: 0;
}

.cf-nav-toggle[aria-expanded="true"] span:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}

/* ---- Intestazioni di sezione ---- */

.cf-section__head {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 2rem;
	margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
	padding-bottom: 1.25rem;
	border-bottom: 1px solid var(--cf-edge-soft);
}

/* ---- Form ---- */

.cf-field {
	display: block;
	margin-bottom: 1.75rem;
}

.cf-field > .cf-meter {
	display: block;
	margin-bottom: 0.6rem;
}

.cf-input,
.cf-textarea,
.cf-site .frm-fluent-form input[type="text"],
.cf-site .frm-fluent-form input[type="email"],
.cf-site .frm-fluent-form textarea {
	width: 100%;
	padding: 0.95rem 0;
	font-family: var(--cf-font-body);
	font-size: 1rem;
	font-weight: 300;
	color: var(--cf-bone);
	background: transparent;
	border: 0;
	border-bottom: 1px solid var(--cf-edge);
	border-radius: var(--cf-radius);
	transition: border-color 0.4s var(--cf-ease);
}

.cf-input::placeholder,
.cf-textarea::placeholder {
	color: var(--cf-bone-faint);
}

.cf-input:focus,
.cf-textarea:focus,
.cf-site .frm-fluent-form input:focus,
.cf-site .frm-fluent-form textarea:focus {
	outline: none;
	border-bottom-color: var(--cf-bronze);
}

.cf-input[aria-invalid="true"],
.cf-textarea[aria-invalid="true"] {
	border-bottom-color: var(--cf-red);
}

.cf-error {
	display: block;
	margin-top: 0.5rem;
	font-family: var(--cf-font-meter);
	font-size: 0.6875rem;
	color: var(--cf-red);
}

.cf-site .frm-fluent-form .ff-btn-submit {
	font-family: var(--cf-font-meter);
	font-size: 0.6875rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	padding: 1.05rem 1.75rem;
	background: var(--cf-bronze);
	color: var(--cf-void);
	border: 1px solid var(--cf-bronze);
	border-radius: var(--cf-radius);
	cursor: pointer;
	transition: background-color 0.4s var(--cf-ease), color 0.4s var(--cf-ease);
}

.cf-site .frm-fluent-form .ff-btn-submit:hover {
	background: var(--cf-bone);
	border-color: var(--cf-bone);
}

/* ---- Piede ---- */

.cf-footer {
	border-top: 1px solid var(--cf-edge-soft);
	padding-block: clamp(4rem, 7vw, 6rem) 2.5rem;
	background: var(--cf-ground);
}

.cf-footer__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
	gap: clamp(2rem, 4vw, 4rem);
	margin-bottom: 3.5rem;
}

.cf-footer__list {
	list-style: none;
	margin: 1rem 0 0;
	padding: 0;
	display: grid;
	gap: 0.6rem;
}

.cf-footer__list a,
.cf-footer__list span {
	color: var(--cf-bone-dim);
	text-decoration: none;
	font-size: 0.9375rem;
	font-weight: 300;
}

.cf-footer__list a:hover {
	color: var(--cf-bronze);
}

.cf-footer__base {
	display: flex;
	flex-wrap: wrap;
	gap: 1rem 2.5rem;
	justify-content: space-between;
	padding-top: 1.75rem;
	border-top: 1px solid var(--cf-edge-soft);
}

/* ---- Adattamento ---- */

@media (max-width: 900px) {
	.cf-nav-toggle {
		display: flex;
	}

	.cf-nav {
		position: fixed;
		inset: var(--cf-header-h) 0 auto 0;
		flex-direction: column;
		align-items: stretch;
		gap: 0;
		padding: var(--cf-gutter);
		background: var(--cf-void);
		border-bottom: 1px solid var(--cf-edge);
		transform: translateY(-101%);
		visibility: hidden;
		transition: transform 0.5s var(--cf-ease), visibility 0.5s;
	}

	.cf-nav.is-open {
		transform: translateY(0);
		visibility: visible;
	}

	.cf-nav__list {
		flex-direction: column;
		align-items: stretch;
		gap: 0;
	}

	.cf-nav__list a {
		display: block;
		padding-block: 1.15rem;
		border-bottom: 1px solid var(--cf-edge-soft);
		font-size: 0.75rem;
	}

	.cf-nav__list a::after {
		display: none;
	}

	.cf-header__cta {
		margin-top: 1.5rem;
		justify-content: center;
	}
}

/* Il richiamo alle preferenze cookie è un bottone, non un link: compie
   un'azione nella pagina, non porta altrove. Va però letto come il resto
   della riga legale in fondo. */
.cf-footer__consent {
	background: none;
	border: 0;
	padding: 0;
	cursor: pointer;
	font-family: var(--cf-font-meter);
	font-size: 0.6875rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--cf-bone-faint);
	text-decoration: underline;
	text-decoration-color: var(--cf-edge);
	text-underline-offset: 0.3em;
	transition: color 0.3s var(--cf-ease);
}

.cf-footer__consent:hover {
	color: var(--cf-bronze);
}