/**
 * Changeloger — Premium Release Layouts
 *
 * Styles for the Rail, Ticker, and Mosaic release layouts. The base release
 * item markup (.cha-release-item, .cha-release-left/right, .cha-change-*) is
 * shared with frontend-changelog.css; these rules re-arrange it per layout.
 *
 * Selector convention: every rule is scoped by its immediate parent
 * (parent class + element class) so these layout class names never leak.
 * Accent color uses the global --changeloger_brand_color CSS variable.
 */

:root {
	--cha-accent: var( --changeloger_brand_color, #6366f1 );
}

/* ==========================================================================
   Rail layout — sticky version rail (left) + content (right)
   ========================================================================== */

.cha-hub-panel .cha-changelog-layout--rail {
	display: flex;
	flex-wrap: wrap;
	align-items: flex-start;
	gap: 40px;
	margin: 0 auto;
	padding:70px 12px 24px ;
}

/* Pagination + empty state drop to their own full-width row below rail + content
   (instead of becoming a squeezed third flex column). */
.cha-changelog-layout--rail .cha-pagination,
.cha-changelog-layout--rail .cha-no-releases {
	flex: 0 0 100%;
	width: 100%;
}

.cha-changelog-layout--rail .cha-release-rail {
	position: sticky;
	top: 90px;
	flex: 0 0 200px;
	width: 200px;
	max-height: calc( 100vh - 110px );
	overflow: hidden;
	padding-left: 8px;
}

/* Wheel mode (list taller than the rail) — fade the clipped top/bottom edges. */
.cha-release-rail.cha-is-wheel {
	-webkit-mask-image: linear-gradient( to bottom, transparent 0, #000 14%, #000 86%, transparent 100% );
	        mask-image: linear-gradient( to bottom, transparent 0, #000 14%, #000 86%, transparent 100% );
}

.cha-release-rail .cha-release-rail__list {
	list-style: none;
	margin: 0;
	padding: 0;
	position: relative;
	/* Wheel/chain motion — the list slides so the active item stays centered. */
	transition: transform 0.45s cubic-bezier( 0.22, 1, 0.36, 1 );
	will-change: transform;
}

/* The vertical timeline line. */
.cha-release-rail .cha-release-rail__item::before {
	content: "";
	position: absolute;
	left: 5px;
	top: 20px;
    bottom: 0;
	width: 2px;
	background: #e5e7eb;
}

.cha-release-rail .cha-release-rail__item:last-child::before {
	display: none;
}

.cha-release-rail__list .cha-release-rail__item {
	position: relative;
	margin: 0;
	padding: 0;
}

.cha-release-rail__item .cha-release-rail__link {
	position: relative;
	display: block;
	padding: 0 0 40px 30px;
	text-decoration: none !important;
	color: #6b7280;
	line-height: 1.3;
	transition: all 0.15s ease;
}

/* Timeline dot. */
.cha-release-rail__item .cha-release-rail__link::before {
	content: "";
	position: absolute;
	left: 0;
	top: 4px;
	width: 12px;
	height: 12px;
	border-radius: 50%;
	background: #fff;
	border: 2px solid #cbd5e1;
	transition: border-color 0.15s ease, background 0.15s ease;
}

.cha-release-rail__link .cha-release-rail__version {
	display: block;
	font-weight: 600;
	font-size: 16px;
	text-decoration: none;
}

.cha-release-rail__link .cha-release-rail__date {
	display: none;
	font-size: 15px;
	color: var(--cha-fg-text-muted);
	margin-top: 4px;
}

.cha-release-rail__item .cha-release-rail__link:hover {
	color: var( --cha-accent );
}

.cha-release-rail__item .cha-release-rail__link.is-active {
	color: var( --cha-accent );
	padding-bottom: 80px;
}

.cha-release-rail__item .cha-release-rail__link::after {
	content: "";
    position: absolute;
	left: -6px;
    top: 10px;
    width: 0;
    height: 0;
    border-radius: 50%;
	background: rgba(0, 0, 0, .06);
	transform: scale(0);
	opacity: 0;
    transition: all .3s ease-in-out;
}

.cha-release-rail__item .cha-release-rail__link.is-active::after {
    width: 24px;
    height: 24px;
	transform: scale(1);
	opacity: 1;
}

.cha-release-rail__link.is-active .cha-release-rail__version {
	font-size: 28px;
	font-weight: 700;
}

.cha-release-rail__link.is-active .cha-release-rail__date {
	display: block;
}

.cha-release-rail__item .cha-release-rail__link.is-active::before {
	background: var( --cha-accent );
	border-color: var( --cha-accent );
	top: 16px;
}

/* The content column fills the remaining space (overrides default container). */
.cha-changelog-layout--rail .cha-changelog-container {
	flex: 1;
	min-width: 0;
	max-width: none;
	margin: 0;
	padding: 0;
}

/* ==========================================================================
   Rail layout — full content cards, per-item version column hidden
   (the rail conveys the version; the release title carries it too)
   ========================================================================== */

.cha-changelog-container--rail .cha-release-item {
	display: block;
	scroll-margin-top: 90px;
	padding: 35px;
	border-radius:35px ;
	border: 0;
	margin-bottom: 32px;
	transition: background-color 0.2s ease-in;
}
.cha-changelog-container--rail .cha-release-item.is-active {
	background-color: #f8f9fc;
}

.cha-changelog-container--rail .cha-release-item:last-child {
	border-bottom: 0;
}

.cha-changelog-container--rail .cha-release-left {
	display: none;
}

.cha-changelog-container--rail .cha-release-right {
	width: 100%;
}


/* ==========================================================================
   Ticker layout — classical changelog timeline: date + dark version box +
   vertical line + solid colored category tags (mirrors src/changeloger)
   ========================================================================== */

.cha-changelog-container--ticker .cha-release-item--ticker {
	display: flex;
	align-items: stretch;
	scroll-margin-top: 90px;
	padding: 0;
	border: 0;
	gap: 0;
}

.cha-release-item--ticker .cha-ticker-date {
	flex: 0 0 18%;
	max-width: 18%;
	text-align: center;
	font-size: 14px;
	color: #6b7280;
	padding-top: 2px;
}

.cha-release-item--ticker .cha-ticker-version {
	flex: 0 0 16%;
	max-width: 16%;
	text-align: center;
	position: relative;
}

.cha-ticker-version .cha-ticker-version-tag {
	position: relative;
	z-index: 1;
	display: inline-block;
	background: #1d2746;
	color: #fff;
	padding: 5px 12px;
	border-radius: 5px;
	font-size: 13px;
	font-weight: 600;
	min-width: max-content;
	transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.cha-ticker-version .cha-ticker-line {
	position: absolute;
	left: 50%;
	top: 0;
	transform: translateX( -50% );
	width: 2px;
	height: 100%;
	background: #e2e5ee;
	overflow: hidden;
	border-radius: 2px;
}

/* Scroll-driven progress fill — height set by release-layouts.js (0–100%). */
.cha-ticker-line .cha-ticker-line__fill {
	display: block;
	width: 100%;
	height: 0;
	background: var( --cha-accent );
	border-radius: 2px;
}

/* Active release (the one at the scroll "playhead") lights up its version box. */
.cha-release-item--ticker.is-active .cha-ticker-version-tag {
	background: var( --cha-accent );
	transform: scale( 1.06 );
	box-shadow: 0 0 0 5px color-mix( in srgb, var( --cha-accent ) 18%, transparent );
}

/* Scroll reveal — only active once JS has enabled it (progressive enhancement). */
.cha-changelog-container--ticker.cha-ticker--animated .cha-release-item--ticker {
	opacity: 0;
	transform: translateY( 14px );
	transition: opacity 0.5s ease, transform 0.5s ease;
}

.cha-changelog-container--ticker.cha-ticker--animated .cha-release-item--ticker.is-visible {
	opacity: 1;
	transform: none;
}

.cha-release-item--ticker .cha-ticker-content {
	flex: 1 1 auto;
	min-width: 0;
	padding-bottom: 48px;
}

.cha-changelog-container--ticker .cha-release-item--ticker:last-child .cha-ticker-content {
	padding-bottom: 8px;
}

.cha-ticker-content .cha-ticker-row {
	display: flex;
	align-items: flex-start;
	margin: 14px 0 0;
	font-size: 16px;
	line-height: 1.6;
	color: #374151;
}

.cha-ticker-content .cha-ticker-row:first-child {
	margin-top: 0;
}

.cha-ticker-row .cha-log-tag {
	flex: 0 0 auto;
	color: #fff;
	padding: 5px;
	font-size: 12px;
	text-transform: uppercase;
	border-radius: 5px;
	letter-spacing: 1px;
	margin-right: 20px;
	margin-top: 4px;
	min-width: 100px;
	text-align: center;
}

.cha-ticker-row .cha-ticker-change {
	flex: 1 1 auto;
	min-width: 0;
	padding-top: 2px;
}

/* ==========================================================================
   Mosaic layout — responsive multi-column card grid
   ========================================================================== */

.cha-hub-panel .cha-changelog-container--mosaic {
	display: grid;
	grid-template-columns: repeat( auto-fill, minmax( 320px, 1fr ) );
	gap: 24px;
	max-width: 1200px;
}

.cha-changelog-container--mosaic .cha-release-item {
	display: flex;
	flex-direction: column;
	gap: 12px;
	background: #fff;
	border: 1px solid #e5e7eb;
	border-radius: 12px;
	padding: 22px;
	box-shadow: 0 1px 3px rgba( 0, 0, 0, 0.04 );
}

.cha-changelog-container--mosaic .cha-release-left {
	position: static;
	width: 100%;
	display: flex;
	align-items: center;
	gap: 10px;
}

.cha-changelog-container--mosaic .cha-release-right {
	width: 100%;
}

.cha-changelog-container--mosaic .cha-release-title {
	font-size: 18px;
}

/* Empty state spans all grid columns instead of one narrow cell. */
.cha-changelog-container--mosaic .cha-no-releases {
	grid-column: 1 / -1;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media ( max-width: 782px ) {
	.cha-hub-panel .cha-changelog-layout--rail {
		display: block;
	}

	.cha-changelog-layout--rail .cha-release-rail {
		position: static;
		width: 100%;
		flex-basis: auto;
		max-height: none;
		overflow: visible;
		margin-bottom: 20px;
		padding-right: 0;
	}

	/* Horizontal, scrollable rail on mobile. */
	.cha-release-rail .cha-release-rail__list {
		display: flex;
		gap: 8px;
		overflow-x: auto;
		padding-bottom: 6px;
	}

	.cha-release-rail__item .cha-release-rail__link {
		padding: 6px 12px;
		border: 1px solid #e5e7eb;
		border-radius: 8px;
		white-space: nowrap;
	}

	.cha-release-rail__item .cha-release-rail__link::before {
		display: none;
	}

	.cha-release-rail__item .cha-release-rail__link.is-active {
		border-color: var( --cha-accent );
	}

	.cha-changelog-container--ticker .cha-release-item--ticker {
		display: block;
	}

	.cha-release-item--ticker .cha-ticker-date,
	.cha-release-item--ticker .cha-ticker-version {
		flex: none;
		max-width: none;
		text-align: left;
		display: inline-block;
		margin: 0 12px 8px 0;
	}

	.cha-ticker-version .cha-ticker-line {
		display: none;
	}

	.cha-ticker-content .cha-ticker-row {
		flex-direction: column;
		gap: 4px;
	}

	.cha-ticker-row .cha-log-tag {
		min-width: 0;
		align-self: flex-start;
	}

	.cha-hub-panel .cha-changelog-container--mosaic {
		grid-template-columns: 1fr;
	}
}