/* Compiles to assets/basalt/css/components/trend-lines.css, linked after basalt.css by
   the pages that use it. */
/* A trend line in a figure tile: a smooth line over a soft fill, a dot
   that breathes on the latest value, and a readout that follows the
   pointer or the arrow keys. assets/basalt/js/components/trend-lines.js draws it; --basalt-trendline-tone
   sets the color and the holder's height sets how tall it stands. */
.basalt-trendline {
	--basalt-trendline-tone: var(--basalt-hue);
	position: relative;
	height: 3.25rem;
	color: var(--basalt-trendline-tone);
	cursor: crosshair;
	outline: none;
	touch-action: pan-y;
}
.basalt-trendline svg {
	display: block;
	width: 100%;
	height: 100%;
	overflow: visible;
}
.basalt-trendline:focus-visible {
	border-radius: 6px;
	box-shadow:
		0 0 0 2px var(--basalt-plane),
		0 0 0 4px var(--basalt-hue);
}

.basalt-trendline-line {
	fill: none;
	stroke: currentColor;
	stroke-width: 2.25;
	stroke-linecap: round;
	stroke-linejoin: round;
	vector-effect: non-scaling-stroke;
	animation: basalt-trendline-draw 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.basalt-trendline-fill {
	animation: basalt-trendline-rise 0.5s ease-out 0.1s both;
	/* Flat mode: one light, even tint of the line's color instead of the fade. */
}
:root[data-basalt-gradients="off"] .basalt-trendline-fill {
	fill: currentColor;
	fill-opacity: 0.12;
}

@keyframes basalt-trendline-draw {
	from {
		clip-path: inset(-20% 100% -20% 0);
	}
	to {
		clip-path: inset(-20% 0 -20% 0);
	}
}
@keyframes basalt-trendline-rise {
	from {
		opacity: 0;
		transform: translateY(6px);
	}
}
/* The latest value: a dot with a ring that slowly breathes out. */
.basalt-trendline-end,
.basalt-trendline-dot {
	position: absolute;
	width: 0.6rem;
	height: 0.6rem;
	border: 2px solid var(--basalt-plane);
	border-radius: 50%;
	background: currentColor;
	transform: translate(-50%, -50%);
	pointer-events: none;
}

.basalt-trendline-end {
	animation: basalt-trendline-pop 400ms ease 1s both;
}
.basalt-trendline-end::after {
	content: "";
	position: absolute;
	inset: -5px;
	border-radius: 50%;
	background: currentColor;
	opacity: 0.25;
	animation: basalt-trendline-breathe 2.4s ease-out 1.4s infinite;
}

@keyframes basalt-trendline-pop {
	from {
		opacity: 0;
		transform: translate(-50%, -50%) scale(0);
	}
}
@keyframes basalt-trendline-breathe {
	from {
		opacity: 0.35;
		transform: scale(0.6);
	}
	to {
		opacity: 0;
		transform: scale(1.8);
	}
}
/* While reading: a dashed guide, a larger dot and the value above it. */
.basalt-trendline-guide {
	position: absolute;
	top: -0.25rem;
	bottom: 0;
	border-left: 1px dashed color-mix(in srgb, currentColor 55%, transparent);
	pointer-events: none;
}

.basalt-trendline-dot {
	width: 0.8rem;
	height: 0.8rem;
	box-shadow: 0 0 0 4px color-mix(in srgb, currentColor 22%, transparent);
	transition:
		left 110ms ease,
		top 110ms ease;
}

.basalt-trendline-tip {
	position: absolute;
	bottom: calc(100% + 0.4rem);
	z-index: 2;
	display: flex;
	flex-direction: column;
	max-width: 12rem;
	padding: 0.3rem 0.6rem;
	border-radius: 8px;
	font-size: 0.71rem;
	line-height: 1.3;
	white-space: nowrap;
	color: var(--basalt-plane);
	background: var(--basalt-copy);
	box-shadow: 0 6px 14px color-mix(in srgb, var(--basalt-copy) 18%, transparent);
	transform: translateX(-50%);
	pointer-events: none;
}
.basalt-trendline-tip strong {
	font-size: 0.85rem;
}
.basalt-trendline-tip span {
	overflow: hidden;
	text-overflow: ellipsis;
	opacity: 0.75;
}
.basalt-trendline-tip[data-side="start"] {
	transform: translateX(-0.6rem);
}
.basalt-trendline-tip[data-side="end"] {
	transform: translateX(calc(-100% + 0.6rem));
}

.basalt-trendline-guide,
.basalt-trendline-dot,
.basalt-trendline-tip {
	opacity: 0;
	transition-property: opacity, left, top;
	transition-duration: 130ms;
}

.basalt-trendline.has-own-readout .basalt-trendline-tip {
	display: none;
}

.basalt-trendline.is-reading .basalt-trendline-guide,
.basalt-trendline.is-reading .basalt-trendline-dot,
.basalt-trendline.is-reading .basalt-trendline-tip {
	opacity: 1;
}
.basalt-trendline.is-reading .basalt-trendline-end {
	opacity: 0;
}

@media (prefers-reduced-motion: reduce) {
	.basalt-trendline-line,
	.basalt-trendline-fill,
	.basalt-trendline-end,
	.basalt-trendline-end::after {
		animation: none;
	}
	.basalt-trendline-guide,
	.basalt-trendline-dot,
	.basalt-trendline-tip {
		transition: none;
	}
}