/**
 * Signal OS section.
 *
 * @package Fundamento
 */

.signal-os-scroll-container {
	/* Signal OS dark bg — fills pin-spacer while scrolling */
	--signal-os-bg: #2a2a26;

	position: relative;
	z-index: 10;
	isolation: isolate;
	width: 100%;
	margin-left: 0;
	margin-right: 0;
	background-color: var(--signal-os-bg);
}

.signal-os-sticky-wrapper {
	--signal-os-bg: #2a2a26;
	--signal-os-legend-width: 15.9375rem;
	--signal-os-list-width: 38.0625rem; /* Figma: 481px */
	--signal-os-list-height: 35.5625rem; /* Figma: 569px */
	--signal-os-left-gap: 5rem;
	--signal-os-marker-gap: var(--space-40); /* Figma: 40px */
	--signal-os-track-width: 2.5rem; /* 40px */
	--signal-os-item-inactive-opacity: 0.2;
	--signal-os-visible-items: 3;
	--signal-os-item-gap: var(--space-40);
	--signal-os-item-slot: calc((var(--signal-os-list-height) - (2 * var(--signal-os-item-gap))) / var(--signal-os-visible-items));

	position: relative;
	width: 100%;
	z-index: 10;
	isolation: isolate;
	background-color: transparent;
	/* GPU layer — prevents sibling flash during GSAP pin recalculation */
	-webkit-transform: translateZ(0);
	transform: translateZ(0);
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
}

/* Static bg — pinned with wrapper, not stretched by scroll height */
.signal-os__bg {
	position: absolute;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	background-color: var(--signal-os-bg);
	background-image: var(--signal-os-bg-image);
	background-size: cover;
	background-position: top center;
	background-repeat: no-repeat;
}

.signal-os {
	position: relative;
	width: 100%;
	min-height: 100vh;
	overflow: clip;
	background-color: transparent;
	z-index: 1;
}

.signal-os__container {
	position: relative;
	z-index: 1;
	display: grid;
	grid-template-columns: minmax(0, 1fr) var(--signal-os-list-width);
	gap: var(--space-20);
	align-items: end;
	width: 100%;
	max-width: none;
	margin: 0;
	padding: var(--space-80) var(--space-40);
	box-sizing: border-box;
}

.signal-os__left {
	grid-column: 1;
	grid-row: 1;
	display: grid;
	grid-template-columns: var(--signal-os-legend-width) minmax(0, 1fr);
	gap: var(--signal-os-left-gap);
	align-items: end;
	min-width: 0;
}

.signal-os__legend {
	display: flex;
	flex-direction: column;
	gap: var(--space-8);
	align-self: end;
	width: var(--signal-os-legend-width);
	flex-shrink: 0;
}

.signal-os__content {
	position: relative;
	align-self: end;
	width: 100%;
	min-width: 0;
	min-height: var(--signal-os-list-height);
}

.signal-os__content-panel {
	position: absolute;
	right: 0;
	bottom: 0;
	left: 0;
	display: flex;
	flex-direction: column;
	gap: var(--space-16);
	align-items: flex-start;
	width: 100%;
	opacity: 0;
	visibility: hidden;
	pointer-events: none;
	transition:
		opacity 0.45s ease,
		visibility 0.45s ease;
}

.signal-os__content-panel.is-active {
	opacity: 1;
	visibility: visible;
	pointer-events: auto;
}

.signal-os__content-panel[hidden] {
	display: flex;
}

.signal-os__heading {
	margin: 0;
	font-family: var(--font-family-display);
	font-size: var(--text-display-h1-alt-size);
	font-weight: 400;
	line-height: 1.1;
	letter-spacing: 0;
	color: var(--color-text-inverse);
	max-width: 26rem;
}

.signal-os__tm {
	display: inline-block;
	width: 0.875rem;
	height: 0.875rem;
	vertical-align: super;
	flex-shrink: 0;
}

.signal-os__description {
	max-width: 28.25rem;
	margin: 0;
	font-family: var(--font-family-body);
	font-size: var(--text-body-md-size);
	font-weight: 400;
	line-height: 1.4;
	color: var(--color-text-inverse);
}

.signal-os__legend-item {
	display: flex;
	align-items: center;
	gap: var(--space-8);
	font-family: var(--font-family-body);
	font-size: 16px;
	font-weight: 400;
	cursor: pointer;
	text-align: left;
	background: none;
	border: none;
	padding: 4px 0;
	transition:
		color 0.45s ease,
		opacity 0.45s ease;
	line-height: var(--text-body-sm-lh);
}

.signal-os__legend-item:hover {
	color: color-mix(in srgb, var(--color-text-inverse) 80%, transparent);
}

.signal-os__legend-item.is-active {
	color: var(--color-text-inverse) !important;
}

.signal-os__legend-item.is-active .signal-os__legend-dash {
	background-color: var(--color-text-inverse) !important;
}

.signal-os__list--hidden {
	opacity: 0;
	visibility: hidden;
	pointer-events: none;
	position: absolute;
	top: 0;
	right: 0;
}

.signal-os__legend-dash {
	flex-shrink: 0;
	width: var(--space-16);
	height: 1px;
	transition: background-color 0.45s ease;
}

.signal-os__legend-item--high {
	color: color-mix(in srgb, var(--color-text-inverse) 60%, transparent);
}

.signal-os__legend-item--high .signal-os__legend-dash {
	background-color: color-mix(in srgb, var(--color-text-inverse) 60%, transparent);
}

.signal-os__legend-item--low {
	color: color-mix(in srgb, var(--color-text-inverse) 30%, transparent);
}

.signal-os__legend-item--low .signal-os__legend-dash {
	background-color: color-mix(in srgb, var(--color-text-inverse) 30%, transparent);
}

.signal-os__list {
	grid-column: 2;
	grid-row: 1;
	position: relative;
	display: block;
	flex-shrink: 0;
	width: var(--signal-os-list-width);
	height: var(--signal-os-list-height);
	padding: 0 0 0 var(--signal-os-marker-gap);
	box-sizing: border-box;
	overflow: hidden;
	transition:
		opacity 0.45s ease,
		visibility 0.45s ease;
}

.signal-list__viewport {
	display: flex;
	flex-direction: column;
	gap: var(--signal-os-item-gap);
	will-change: transform;
}

.signal-list__rail {
	position: absolute;
	top: 0;
	bottom: 0;
	left: calc(var(--signal-os-marker-gap) + (var(--signal-os-track-width) / 2));
	z-index: 0;
	width: 1px;
	pointer-events: none;
	transform: translateX(-50%);
}

.signal-list__rail-track,
.signal-list__rail-fill {
	position: absolute;
	inset: 0;
	width: 100%;
}

.signal-list__rail-track {
	background-color: color-mix(in srgb, var(--color-text-inverse) 18%, transparent);
}

.signal-list__rail-fill {
	transform-origin: top center;
	transform: scaleY(0);
	background: linear-gradient(
		to bottom,
		var(--color-neutral-100) 0%,
		color-mix(in srgb, var(--color-text-inverse) 45%, transparent) 100%
	);
	transition: transform 0.15s linear;
	will-change: transform;
}

.signal-list__item {
	position: relative;
	z-index: 1;
	display: flex;
	align-items: center;
	flex-shrink: 0;
	gap: var(--signal-os-marker-gap);
	min-height: var(--signal-os-item-slot);
	padding: 0;
	font-family: var(--font-family-body);
	font-size: 1.25rem;
	font-weight: 400;
	line-height: 1.4;
	color: var(--color-text-inverse);
	cursor: default;
	opacity: var(--signal-os-item-inactive-opacity);
	transition:
		opacity 0.35s ease,
		color 0.35s ease,
		font-weight 0.35s ease,
		font-size 0.35s ease;
}

.signal-list__item.is-active {
	font-size: 1.375rem;
	font-weight: 500;
	opacity: 1;
	color: var(--color-text-inverse);
}

.signal-list__item.is-past {
	opacity: 0.35;
}

.signal-list__track {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	flex-shrink: 0;
	width: var(--signal-os-track-width);
}

.signal-list__marker {
	position: relative;
	z-index: 2;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-shrink: 0;
	width: 36px;
	height: 36px;
	background-color: transparent;
	border: none;
	border-radius: 0;
	transition:
		background-color 0.35s ease,
		transform 0.35s ease,
		box-shadow 0.35s ease;
}

.signal-list__marker::before {
	content: '';
	flex-shrink: 0;
	width: 9px;
	height: 9px;
	margin: 0;
	background-color: #59554f;
	opacity: 1;
	transition:
		opacity 0.35s ease,
		transform 0.35s ease;
}

.signal-list__number {
	display: none;
	font-size: 11px;
	font-weight: 500;
	line-height: 1;
	color: var(--color-text-inverse);
}

.signal-list__item.is-active .signal-list__marker {
	background-color: var(--color-neutral-100);
	border-radius: var(--radius-full);
	transform: scale(1);
}

.signal-list__item.is-active .signal-list__marker::before {
	opacity: 0;
	display: none;
}

.signal-list__item.is-active .signal-list__number {
	display: block;
	color: var(--color-neutral-900);
	font-size: 18px;
	font-weight: 400;
}

.signal-list__text {
	flex: 1;
	min-width: 0;
	white-space: nowrap;
	transition: opacity 0.35s ease;
}

/* Desktop — 1025px+ */
@media (min-width: 1025px) {
	.signal-os {
		display: flex;
		flex-direction: column;
		justify-content: center;
		min-height: 100vh;
	}

	.signal-os__container {
		grid-template-columns: minmax(0, 1fr) var(--signal-os-list-width);
	}
}

@media (max-width: 1299px) and (min-width: 1150px)  {
    .signal-os__left{
        gap:40px;
    }
	.signal-os__container{
      	padding: 0 var(--space-40) 0 var(--space-40);
    }
	.signal-os__content{
    	min-height:25.5625rem;
    }
	
}
/* Tablet — 769px–1024px */
@media (max-width: 1024px) and (min-width: 769px) {
	.signal-os-sticky-wrapper {
		--signal-os-legend-width: 8.75rem;
		--signal-os-left-gap: var(--space-20);
		--signal-os-list-width: 100%;
		--signal-os-list-height: 26rem;
		--signal-os-marker-gap: var(--space-32);
		--signal-os-item-slot: calc((var(--signal-os-list-height) - (2 * var(--signal-os-item-gap))) / var(--signal-os-visible-items));
	}

	.signal-os {
		display: flex;
		flex-direction: column;
		justify-content: flex-start;
		min-height: 100vh;
	}

	.signal-os__container {
		grid-template-columns: minmax(0, 1fr) minmax(12.5rem, 38%);
		gap: var(--space-16);
		padding: var(--space-32) var(--space-24) var(--space-40);
		align-items: start;
		align-content: start;
		align-self: flex-start;
		width: 100%;
	}

	.signal-os__left {
		display: flex;
		flex-direction: column;
		gap: var(--space-16);
		align-items: flex-start;
		align-self: start;
		height: auto;
	}

	.signal-os__content {
		order: 1;
		min-height: 0;
        position: relative;
		align-self: flex-start;
		width: 100%;
	}

	.signal-os__content-panel {
		position: absolute;
		top: 0;
		right: 0;
		left: 0;
		bottom: auto;
		gap: var(--space-12);
        transition: none;
	}
    
    .signal-os__content-panel.is-active {
		position: relative;
		opacity: 1;
		visibility: visible;
	}

	.signal-os__content-panel[hidden] {
		display: none !important;
	}

	.signal-os__heading {
		font-size: clamp(1.625rem, 2.8vw, 2.125rem);
		max-width: 100%;
		line-height: 1.15;
	}

	.signal-os__description {
		font-size: var(--text-body-sm-size);
		max-width: 100%;
		line-height: 1.45;
	}

	.signal-os__legend {
		order: 2;
		align-self: flex-start;
		width: 100%;
		max-width: 100%;
		margin-top: 0;
		padding-top: 0;
	}

	.signal-os__legend-item {
		font-size: 0.8125rem;
		line-height: 1.35;
		padding: 2px 0;
	}

	.signal-os__list {
		grid-column: 2;
		grid-row: 1;
		align-self: start;
		width: 100%;
		height: var(--signal-os-list-height);
		padding-left: var(--space-24);
	}

	.signal-os__list--hidden {
		position: absolute;
		grid-column: 2;
		grid-row: 1;
		align-self: start;
		top: 0;
		right: 0;
		bottom: auto;
		left: auto;
		width: 100%;
		height: var(--signal-os-list-height);
	}

	.signal-list__item {
		font-size: 0.9375rem;
		gap: var(--signal-os-marker-gap);
	}

	.signal-list__item.is-active {
		font-size: 1.0625rem;
	}

	.signal-list__item.is-active .signal-list__number {
		font-size: 1rem;
	}

	.signal-list__text {
		white-space: normal;
	}
}

/* Mobile — max 768px */
@media (max-width: 768px) {
	.signal-os-sticky-wrapper {
		--signal-os-list-width: 100%;
		--signal-os-list-height: min(26rem, 48vh);
		--signal-os-marker-gap: var(--space-32);
		--signal-os-item-gap: var(--space-32);
		--signal-os-item-slot: calc((var(--signal-os-list-height) - (2 * var(--signal-os-item-gap))) / var(--signal-os-visible-items));
	}

	.signal-os {
		display: flex;
		flex-direction: column;
		justify-content: flex-start;
		min-height: 100svh;
		touch-action: pan-y;
	}

	.signal-os__container {
		grid-template-columns: 1fr;
		gap: var(--space-32);
		align-items: stretch;
		align-content: start;
		align-self: flex-start;
		width: 100%;
		padding: var(--space-32) var(--space-24) var(--space-32);
	}

	.signal-os__left {
		display: flex;
		flex-direction: column;
		gap: var(--space-16);
		grid-column: 1;
		grid-row: 1;
		align-items: flex-start;
		align-self: start;
	}

	.signal-os__content {
		order: 1;
        position: relative;
		align-self: flex-start;
		min-height: 0;
		width: 100%;
	}

	.signal-os__content-panel {
		position: absolute;
		top: 0;
		right: 0;
		left: 0;
		bottom: auto;
		gap: var(--space-12);
        transition: none;
	}
    
    .signal-os__content-panel.is-active {
		position: relative;
		opacity: 1;
		visibility: visible;
	}


	.signal-os__content-panel[hidden] {
		display: none !important;
	}

	.signal-os__heading {
		font-size: clamp(1.75rem, 7.5vw, 2.25rem);
		max-width: 100%;
		line-height: 1.15;
	}

	.signal-os__description {
		font-size: var(--text-body-sm-size);
		max-width: 100%;
		line-height: 1.45;
	}

	.signal-os__legend {
		order: 2;
		align-self: flex-start;
		width: 100%;
		max-width: 100%;
		margin-top: 0;
		padding-top: 0;
		gap: var(--space-12);
	}

	.signal-os__legend-item {
		font-size: var(--text-body-sm-size);
		line-height: 1.35;
	}

	.signal-os__list {
		position: relative;
		grid-column: 1;
		grid-row: 2;
		align-self: start;
		width: 100%;
		height: var(--signal-os-list-height);
		min-height: var(--signal-os-list-height);
		max-height: var(--signal-os-list-height);
		padding-left: var(--space-24);
		margin-top: 0;
		opacity: 1;
		visibility: visible;
		overflow: hidden;
	}

	.signal-os__list--hidden {
		position: absolute;
		grid-column: 1;
		grid-row: 2;
		top: 0;
		right: var(--space-24);
		bottom: auto;
		left: var(--space-24);
		width: auto;
		height: var(--signal-os-list-height);
		opacity: 0;
		visibility: hidden;
	}

	.signal-list__rail {
		top: 0;
		bottom: 0;
		left: calc(var(--space-24) + (var(--signal-os-track-width) / 2));
	}

	.signal-list__item {
		font-size: var(--text-body-sm-size);
		gap: var(--signal-os-marker-gap);
		min-height: var(--signal-os-item-slot);
	}

	.signal-list__item.is-active {
		font-size: var(--text-body-md-size);
	}

	.signal-list__item.is-active .signal-list__number {
		font-size: 1rem;
	}

	.signal-list__text {
		white-space: normal;
		line-height: 1.4;
	}
}

@media (prefers-reduced-motion: reduce) {
	.signal-os__content-panel,
	.signal-os__list,
	.signal-os__legend-item,
	.signal-list__item,
	.signal-list__marker,
	.signal-list__rail-fill {
		transition: none !important;
	}
}