/* Nachbrand Timeline – Frontend Styles */

/* =========================================================================
   CSS Custom Properties (overridden per-instance via inline style)
   ========================================================================= */
.nbtl-timeline {
	--nbtl-accent:         #15c06d;
	--nbtl-timeline-color: #cccccc;
	--nbtl-timeline-width: 2px;
	--nbtl-bullet-color:   #15c06d;
	--nbtl-bullet-size:    14px;
	--nbtl-card-bg:        #ffffff;
	--nbtl-card-text:      #333333;
	--nbtl-card-font-size: 16px;
	--nbtl-card-radius:    8px;

	box-sizing: border-box;
	border: none;
	outline: none;
	position: relative;
	width: 100%;
	font-size: var(--nbtl-card-font-size);
	color: var(--nbtl-card-text);
}

/* Prevent theme wildcard rules from leaking borders into inner wrappers */
.nbtl-horizontal,
.nbtl-horizontal__track,
.nbtl-horizontal__list,
.nbtl-vertical,
.nbtl-vertical__list {
	border: none;
	outline: none;
}

.nbtl-timeline *,
.nbtl-timeline *::before,
.nbtl-timeline *::after {
	box-sizing: inherit;
}

.nbtl-no-events {
	text-align: center;
	opacity: .6;
	padding: 2rem 0;
}

/* =========================================================================
   Shared event styles
   ========================================================================= */
.nbtl-event__card {
	background: var(--nbtl-card-bg);
	color: var(--nbtl-card-text);
	border-radius: var(--nbtl-card-radius);
	box-shadow: var(--nbtl-card-shadow, 0 2px 8px rgba(0,0,0,.08));
	border: var(--nbtl-card-border-width, 0px) solid var(--nbtl-card-border-color, transparent);
	overflow: hidden;
	-webkit-backdrop-filter: blur(var(--nbtl-card-blur, 0px));
	backdrop-filter: blur(var(--nbtl-card-blur, 0px));
}

.nbtl-event__image-wrap img.nbtl-event__image {
	display: block;
	width: 100%;
	height: auto;
	object-fit: cover;
	border-radius: var(--nbtl-card-radius) var(--nbtl-card-radius) 0 0;
}

.nbtl-event__body {
	padding: 18px 20px;
}

.nbtl-event__title {
	margin: 0 0 8px;
	font-size: 1.1em;
	font-weight: 700;
	color: var(--nbtl-card-text);
}

.nbtl-event__content {
	font-size: .95em;
	line-height: 1.6;
	color: var(--nbtl-card-text);
}

.nbtl-event__content p:last-child { margin-bottom: 0; }

.nbtl-event__date {
	display: inline-block;
	font-size: .82em;
	font-weight: 600;
	letter-spacing: .03em;
	color: var(--nbtl-accent);
	margin-bottom: 4px;
}

/* Bullet */
.nbtl-event__bullet {
	width: var(--nbtl-bullet-size);
	height: var(--nbtl-bullet-size);
	border-radius: var(--nbtl-bullet-shape, 50%);
	background: var(--nbtl-bullet-color);
	flex-shrink: 0;
	position: absolute;
	z-index: 2;
	box-shadow: 0 0 0 6px var(--nbtl-bullet-gap, #fff), 0 0 0 8px var(--nbtl-bullet-color);
}

/* =========================================================================
   Vertical layout
   ========================================================================= */
.nbtl-timeline--vertical .nbtl-vertical {
	position: relative;
	padding: 20px 0;
}

/* Scrollable vertical container (max-height set via inline style) */
.nbtl-timeline--vertical .nbtl-vertical[style*="overflow-y"] {
	padding-right: 8px;
	scrollbar-width: thin;
	scrollbar-color: var(--nbtl-timeline-color) transparent;
}
.nbtl-timeline--vertical .nbtl-vertical[style*="overflow-y"]::-webkit-scrollbar {
	width: 6px;
}
.nbtl-timeline--vertical .nbtl-vertical[style*="overflow-y"]::-webkit-scrollbar-thumb {
	background: var(--nbtl-timeline-color);
	border-radius: 3px;
}

.nbtl-vertical__line {
	position: absolute;
	top: 0;
	bottom: 0;
	left: 50%;
	transform: translateX(-50%);
	width: var(--nbtl-timeline-width);
	background: var(--nbtl-timeline-color);
}

/* Left-only */
.nbtl-timeline--vertical.nbtl-vertical--left  .nbtl-vertical__line,
.nbtl-timeline--vertical.nbtl-vertical--right .nbtl-vertical__line {
	left: 32px;
	transform: none;
}
.nbtl-timeline--vertical.nbtl-vertical--right .nbtl-vertical__line {
	left: auto;
	right: 32px;
}

.nbtl-vertical__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 48px;
}

/* Alternating */
.nbtl-event {
	position: relative;
	display: grid;
	grid-template-columns: 1fr 40px 1fr;
	align-items: start;
	gap: 0 0;
	margin: 0;
	padding: 0;
	list-style: none;
}

/* bullet sits on the vertical line using same left:50% technique as the line */
.nbtl-event .nbtl-event__bullet {
	position: absolute;
	left: 50%;
	top: 16px;
	transform: translateX(-50%);
}

/* card & date – right side default */
.nbtl-event--right .nbtl-event__card {
	grid-column: 3;
	grid-row: 1;
	margin-left: 20px;
}
.nbtl-event--right .nbtl-event__date {
	grid-column: 1;
	grid-row: 1;
	text-align: right;
	padding-right: 20px;
	padding-top: 18px;
}

/* card & date – left side */
.nbtl-event--left .nbtl-event__card {
	grid-column: 1;
	grid-row: 1;
	margin-right: 20px;
}
.nbtl-event--left .nbtl-event__date {
	grid-column: 3;
	grid-row: 1;
	padding-left: 20px;
	padding-top: 18px;
}

/* left-only layout: collapse grid */
.nbtl-vertical--left .nbtl-event,
.nbtl-vertical--right .nbtl-event {
	grid-template-columns: 40px 1fr;
}

.nbtl-vertical--left .nbtl-event .nbtl-event__bullet  { left: 32px; transform: translateX(-50%); }
.nbtl-vertical--left .nbtl-event .nbtl-event__card    { grid-column: 2; margin-left: 20px; }
.nbtl-vertical--left .nbtl-event .nbtl-event__date    { display: block; padding-left: 0; padding-top: 0; margin-bottom: 6px; grid-column: 2; }

.nbtl-vertical--right .nbtl-event {
	grid-template-columns: 1fr 40px;
}
.nbtl-vertical--right .nbtl-event .nbtl-event__bullet { left: auto; right: 32px; transform: translateX(50%); }
.nbtl-vertical--right .nbtl-event .nbtl-event__card   { grid-column: 1; margin-right: 20px; }
.nbtl-vertical--right .nbtl-event .nbtl-event__date   { display: block; text-align: right; padding-right: 0; padding-top: 0; margin-bottom: 6px; grid-column: 1; }

/* =========================================================================
   Horizontal layout
   ========================================================================= */
.nbtl-timeline--horizontal .nbtl-horizontal {
	position: relative;
	cursor: grab;
}

.nbtl-timeline--horizontal .nbtl-horizontal.is-dragging {
	cursor: grabbing;
	user-select: none;
}

/* Line is outside the scrollable track – stays fixed in view. Top set by JS. */
.nbtl-horizontal__line {
	position: absolute;
	left: 0;
	right: 0;
	height: var(--nbtl-timeline-width);
	background: var(--nbtl-timeline-color);
	pointer-events: none;
	z-index: 1;
}

.nbtl-horizontal__track {
	overflow-x: auto;
	overflow-y: visible;
	padding: 32px 40px;
	-webkit-overflow-scrolling: touch;
	scrollbar-width: none;
	-ms-overflow-style: none;
	position: relative;
	z-index: 2;
}
.nbtl-horizontal__track::-webkit-scrollbar { display: none; }

.nbtl-horizontal__list {
	display: flex;
	gap: 0 40px;
	list-style: none;
	margin: 0;
	padding: 0;
	min-width: max-content;
}

/* "above": all items bottom-aligned → bullets all at same Y */
.nbtl-horizontal__list--above { align-items: flex-end; }
/* "below": all items top-aligned → bullets all at same Y */
.nbtl-horizontal__list--below { align-items: flex-start; }

/* Each event: flex column, centered */
.nbtl-timeline--horizontal .nbtl-event {
	display: flex;
	flex-direction: column;
	align-items: center;
	position: relative;
	width: 240px;
}

/* Bullet above the timeline line.
 * align-self: center overrides the vertical layout's align-self: start,
 * which would otherwise push the bullet to the left edge of the column. */
.nbtl-timeline--horizontal .nbtl-event .nbtl-event__bullet {
	flex-shrink: 0;
	position: relative;
	z-index: 2;
	margin: 0;
	align-self: center;
	left: auto;
	top: auto;
	transform: none;
}

/*
 * "above": cards above the line, date below the bullet
 * Visual order (top→bottom): card → connector → bullet → date
 */
.nbtl-event--above .nbtl-event__card   { order: 0; width: 100%; }
.nbtl-event--above .nbtl-event__bullet { order: 2; }
.nbtl-event--above .nbtl-event__date   { order: 3; margin-top: 14px; }

.nbtl-event--above::after {
	content: '';
	order: 1;
	display: block;
	width: var(--nbtl-timeline-width);
	height: 14px;
	background: var(--nbtl-timeline-color);
	flex-shrink: 0;
}

/*
 * "below": cards below the line, date above the bullet
 * Visual order (top→bottom): date → bullet → connector → card
 */
.nbtl-event--below .nbtl-event__date   { order: 0; margin-bottom: 14px; }
.nbtl-event--below .nbtl-event__bullet { order: 1; }
.nbtl-event--below .nbtl-event__card   { order: 3; width: 100%; }

.nbtl-event--below::after {
	content: '';
	order: 2;
	display: block;
	width: var(--nbtl-timeline-width);
	height: 14px;
	background: var(--nbtl-timeline-color);
	flex-shrink: 0;
}

/* Remove obsolete connector */
.nbtl-timeline--horizontal .nbtl-event::before { display: none; }

/* =========================================================================
   Fade edges
   ========================================================================= */

.nbtl-fade-edges.nbtl-timeline--horizontal .nbtl-horizontal {
	-webkit-mask-image: linear-gradient(to right, transparent 0, #000 100px, #000 calc(100% - 100px), transparent 100%);
	mask-image: linear-gradient(to right, transparent 0, #000 100px, #000 calc(100% - 100px), transparent 100%);
}

.nbtl-fade-edges.nbtl-timeline--vertical .nbtl-vertical {
	-webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 80px, #000 calc(100% - 80px), transparent 100%);
	mask-image: linear-gradient(to bottom, transparent 0, #000 80px, #000 calc(100% - 80px), transparent 100%);
}

/* Disable horizontal fade when mobile fallback switches to vertical */
@media (max-width: 768px) {
	.nbtl-fade-edges.nbtl-timeline--horizontal.nbtl-mobile-vertical .nbtl-horizontal {
		-webkit-mask-image: none;
		mask-image: none;
	}
}

/* =========================================================================
   Timeline line styles: cubes & dots
   ========================================================================= */

/* --- Cubes (square segments) --- */
.nbtl-line-cubes .nbtl-vertical__line {
	width: var(--nbtl-segment-size);
	background: repeating-linear-gradient(
		to bottom,
		var(--nbtl-timeline-color) 0,
		var(--nbtl-timeline-color) var(--nbtl-segment-size),
		transparent var(--nbtl-segment-size),
		transparent calc(var(--nbtl-segment-size) * 2)
	);
}

.nbtl-line-cubes .nbtl-horizontal__line {
	height: var(--nbtl-segment-size);
	background: repeating-linear-gradient(
		to right,
		var(--nbtl-timeline-color) 0,
		var(--nbtl-timeline-color) var(--nbtl-segment-size),
		transparent var(--nbtl-segment-size),
		transparent calc(var(--nbtl-segment-size) * 2)
	);
}

.nbtl-line-cubes .nbtl-event--above::after,
.nbtl-line-cubes .nbtl-event--below::after {
	width: var(--nbtl-segment-size);
}

/* --- Dots (circular segments) --- */
.nbtl-line-dots .nbtl-vertical__line {
	width: var(--nbtl-segment-size);
	background: radial-gradient(
		circle,
		var(--nbtl-timeline-color) 45%,
		transparent 46%
	) center / var(--nbtl-segment-size) var(--nbtl-segment-size) repeat;
}

.nbtl-line-dots .nbtl-horizontal__line {
	height: var(--nbtl-segment-size);
	background: radial-gradient(
		circle,
		var(--nbtl-timeline-color) 45%,
		transparent 46%
	) center / var(--nbtl-segment-size) var(--nbtl-segment-size) repeat;
}

.nbtl-line-dots .nbtl-event--above::after,
.nbtl-line-dots .nbtl-event--below::after {
	width: var(--nbtl-segment-size);
}

/* =========================================================================
   Animations
   ========================================================================= */

/* -- Fade-In -- */
.nbtl-anim-fade .nbtl-event {
	opacity: 0;
	transform: translateY(24px);
	transition: opacity .5s ease, transform .5s ease;
}
.nbtl-anim-fade .nbtl-event.nbtl-visible {
	opacity: 1;
	transform: translateY(0);
}

/* -- Bounce-In -- */
@keyframes nbtl-bounce-in {
	0%   { opacity: 0; transform: scale(.6) translateY(20px); }
	60%  { opacity: 1; transform: scale(1.05) translateY(-6px); }
	80%  { transform: scale(.97) translateY(2px); }
	100% { opacity: 1; transform: scale(1) translateY(0); }
}
.nbtl-anim-bounce .nbtl-event {
	opacity: 0;
}
.nbtl-anim-bounce .nbtl-event.nbtl-visible {
	animation: nbtl-bounce-in .6s cubic-bezier(.215,.61,.355,1);
	opacity: 1;
}

/* -- Fade-Out -- */
.nbtl-anim-out .nbtl-event.nbtl-hidden {
	opacity: 0;
	transform: translateY(-12px);
	transition: opacity .4s ease, transform .4s ease;
}

/* -- Scroll-Fade -- */
.nbtl-anim-scroll .nbtl-event {
	opacity: 0;
}

/* -- No animation -- */
.nbtl-anim-none .nbtl-event {
	opacity: 1;
	transform: none;
}

/* =========================================================================
   Horizontal drag hint / mobile
   ========================================================================= */

/* Mobile fallback: .nbtl-mobile-vertical is added by JS */
@media (max-width: 768px) {
	.nbtl-timeline--horizontal.nbtl-mobile-vertical .nbtl-horizontal {
		cursor: default;
	}
	.nbtl-timeline--horizontal.nbtl-mobile-vertical .nbtl-horizontal__line,
	.nbtl-timeline--horizontal.nbtl-mobile-vertical .nbtl-event::after {
		display: none;
	}
	.nbtl-timeline--horizontal.nbtl-mobile-vertical .nbtl-horizontal__track {
		overflow: visible;
		padding: 0;
	}
	.nbtl-timeline--horizontal.nbtl-mobile-vertical .nbtl-horizontal__list {
		flex-direction: column;
		align-items: stretch;
		min-width: unset;
		gap: 28px 0;
	}
	.nbtl-timeline--horizontal.nbtl-mobile-vertical .nbtl-event {
		width: 100%;
		flex-direction: row;
		align-items: flex-start;
		flex-wrap: wrap;
	}
	.nbtl-timeline--horizontal.nbtl-mobile-vertical .nbtl-event .nbtl-event__bullet {
		order: 0;
		flex-shrink: 0;
		margin: 18px 14px 0 0;
	}
	.nbtl-timeline--horizontal.nbtl-mobile-vertical .nbtl-event .nbtl-event__card {
		order: 1;
		flex: 1;
		width: auto;
	}
	.nbtl-timeline--horizontal.nbtl-mobile-vertical .nbtl-event .nbtl-event__date {
		order: 2;
		width: 100%;
		padding-left: calc(var(--nbtl-bullet-size) + 14px);
		margin: 4px 0 0;
	}
}

/* Vertical responsive tweaks */
@media (max-width: 640px) {
	.nbtl-timeline--vertical .nbtl-event {
		grid-template-columns: 32px 1fr;
	}
	.nbtl-timeline--vertical .nbtl-event .nbtl-event__date { display: none; }
	.nbtl-timeline--vertical .nbtl-event .nbtl-event__card { grid-column: 2; margin: 0 0 0 16px; }
	.nbtl-timeline--vertical .nbtl-event .nbtl-event__bullet { grid-column: 1; margin-top: 14px; }
	.nbtl-vertical--left .nbtl-event .nbtl-event__date,
	.nbtl-vertical--right .nbtl-event .nbtl-event__date { display: none; }
	.nbtl-vertical__line { left: 15px !important; right: auto !important; transform: none !important; }
}