/**
 * Viora Project Nav widget.
 *
 * The two neighbouring projects at the foot of a case study, with an optional
 * link back to the index between them. The previous side is mirrored so both
 * arrows point outward, away from the page you are on.
 */

.viora-project-nav {
	position: relative;
	padding-block: clamp(2.5rem, 5.5vw, 5rem);
	border-top: 1px solid var(--viora-hairline, rgba(17, 17, 17, 0.14));
}

.viora-project-nav__inner {
	display: grid;
	grid-template-columns: 1fr auto 1fr;
	align-items: center;
	gap: clamp(1.25rem, 3vw, 2.75rem);
	width: min(1082px, 100% - 2 * var(--viora-layout-container-pad));
	margin-inline: auto;
}

.viora-project-nav__side {
	display: flex;
	align-items: center;
	gap: clamp(0.75rem, 1.6vw, 1.25rem);
	min-width: 0;
	color: inherit;
	text-decoration: none;
}

/* The previous side reads right to left, so its arrow points back. */
.viora-project-nav__side--prev {
	flex-direction: row-reverse;
	justify-content: flex-end;
	text-align: right;
}

.viora-project-nav__side--prev .viora-project-nav__arrow {
	transform: rotate(180deg);
}

.viora-project-nav__side--next {
	justify-content: flex-end;
	text-align: left;
}

/* Source order puts the thumbnail first; on the next side it belongs last. */
.viora-project-nav__side--next .viora-project-nav__thumb {
	order: 3;
}

.viora-project-nav__side--next .viora-project-nav__arrow {
	order: 4;
}

.viora-project-nav__thumb {
	flex: 0 0 auto;
	width: clamp(3.5rem, 6vw, 5.25rem);
	aspect-ratio: 1;
	overflow: hidden;
	background-color: var(--viora-color-surface-alt);
}

.viora-project-nav__thumb img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 1s var(--viora-motion-easing);
}

.viora-project-nav__side:hover .viora-project-nav__thumb img {
	transform: scale(1.06);
}

.viora-project-nav__copy {
	display: flex;
	flex-direction: column;
	min-width: 0;
}

.viora-project-nav__label {
	color: var(--viora-color-accent);
	font-size: 0.625rem;
	line-height: 1.8;
	letter-spacing: 0.28em;
}

.viora-project-nav__title {
	margin-top: 0.15rem;
	overflow: hidden;
	color: var(--viora-ink, var(--viora-color-heading));
	font-family: var(--viora-font-display);
	font-size: clamp(1.125rem, 1.94vw, 1.75rem);
	font-weight: 400;
	line-height: 1.2;
	letter-spacing: -0.03em;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.viora-project-nav__arrow {
	flex: 0 0 auto;
	display: inline-flex;
	color: var(--viora-ink-soft, var(--viora-color-heading-soft));
	transition: transform var(--viora-motion-base) var(--viora-motion-easing);
}

.viora-project-nav__arrow-svg {
	display: block;
	width: 1.5rem;
	height: auto;
}

.viora-project-nav__side--next:hover .viora-project-nav__arrow {
	transform: translateX(4px);
}

.viora-project-nav__side--prev:hover .viora-project-nav__arrow {
	transform: rotate(180deg) translateX(4px);
}

.viora-project-nav__index {
	color: var(--viora-ink-soft, var(--viora-color-heading-soft));
	font-family: var(--viora-font-ui);
	font-size: 0.6875rem;
	font-weight: var(--viora-weight-medium);
	letter-spacing: 0.24em;
	text-decoration: none;
	text-transform: uppercase;
	white-space: nowrap;
	transition: color var(--viora-motion-base) var(--viora-motion-easing);
}

.viora-project-nav__index:hover {
	color: var(--viora-color-accent);
}

.viora-project-nav__side:focus-visible,
.viora-project-nav__index:focus-visible {
	outline: 1px solid currentColor;
	outline-offset: 6px;
}

/* -------------------------------------------------- *
 * Reveal
 * -------------------------------------------------- */

.viora-project-nav.is-animated .viora-project-nav__item {
	opacity: 0;
	transform: translateY(20px);
}

.viora-project-nav.is-animated .viora-project-nav__item.is-in {
	opacity: 1;
	transform: none;
	transition:
		opacity 0.8s var(--viora-motion-easing),
		transform 0.8s var(--viora-motion-easing);
}

/* -------------------------------------------------- *
 * Mobile — the index link drops out, the pair stacks
 * -------------------------------------------------- */

@media (max-width: 767px) {
	.viora-project-nav__inner {
		grid-template-columns: 1fr;
		gap: clamp(1.25rem, 5vw, 2rem);
	}

	.viora-project-nav__index {
		order: 3;
		justify-self: center;
	}

	/* Both sides read the same way once they are stacked. */
	.viora-project-nav__side--prev,
	.viora-project-nav__side--next {
		flex-direction: row;
		justify-content: flex-start;
		text-align: left;
	}

	.viora-project-nav__side--next .viora-project-nav__thumb {
		order: 0;
	}

	.viora-project-nav__side--next .viora-project-nav__arrow,
	.viora-project-nav__side--prev .viora-project-nav__arrow {
		order: 4;
		margin-left: auto;
	}

	.viora-project-nav__title {
		font-size: 1.125rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	.viora-project-nav.is-animated .viora-project-nav__item {
		opacity: 1;
		transform: none;
		transition: none;
	}

	.viora-project-nav__thumb img,
	.viora-project-nav__arrow {
		transition: none;
	}
}