/* Figures for the "Cascading Merkle Tree" post. */

.cmt-fig {
	margin: 2rem 0;
}

.cmt-svg {
	display: block;
	width: 100%;
	height: auto;
	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	user-select: none;
}

.cmt-svg text {
	fill: var(--fg-color);
	font-size: 10px;
	text-anchor: middle;
	dominant-baseline: central;
}

.cmt-edge {
	stroke: var(--fg-color);
	stroke-opacity: 0.35;
	stroke-width: 1.25;
}

.cmt-dashed {
	stroke-dasharray: 3 3;
}

/* Tree nodes */
.cmt-node circle {
	stroke: var(--bg-color);
	stroke-width: 1.5;
}

.cmt-node text {
	fill: #fff;
	font-weight: 700;
}

.cmt-node,
.cmt-cellg {
	transition: opacity 0.4s ease;
}

.cmt-node.cmt-empty circle,
.cmt-cellg.cmt-empty rect,
rect.cmt-empty {
	fill-opacity: 0.22;
}

.cmt-node.cmt-empty text,
.cmt-cellg.cmt-empty text {
	fill: var(--fg-color);
	font-weight: 400;
	opacity: 0.7;
}

.cmt-new {
	opacity: 0;
}

/* Virtual part of the tree (never stored) */
.cmt-vnode circle {
	fill: none;
	stroke: var(--fg-color);
	stroke-opacity: 0.5;
	stroke-dasharray: 3 3;
}

.cmt-ztri {
	fill: var(--fg-color);
	fill-opacity: 0.05;
	stroke: var(--fg-color);
	stroke-opacity: 0.3;
	stroke-dasharray: 3 3;
}

.cmt-svg .cmt-zlabel {
	font-size: 12px;
	font-style: italic;
	opacity: 0.6;
}

.cmt-svg .cmt-rootlabel {
	font-size: 10px;
	opacity: 0.7;
}

/* Backing array */
.cmt-cellg {
	transition: transform 0.7s cubic-bezier(0.6, 0, 0.3, 1), opacity 0.4s ease;
}

.cmt-cellg text {
	fill: #fff;
	font-size: 9px;
	font-weight: 700;
}

.cmt-count rect,
.cmt-cell-unused {
	fill: none;
	stroke: var(--fg-color);
	stroke-opacity: 0.4;
	stroke-dasharray: 2 2;
}

.cmt-svg .cmt-count text {
	fill: var(--fg-color);
	font-weight: 400;
	font-size: 8px;
}

.cmt-svg .cmt-idx {
	font-size: 9px;
	opacity: 0.55;
}

.cmt-bracket {
	fill: none;
	stroke: var(--fg-color);
	stroke-opacity: 0.4;
}

.cmt-svg .cmt-bracket-label,
.cmt-svg .cmt-leafno,
.cmt-svg .cmt-leafno-hdr {
	font-size: 9px;
	opacity: 0.6;
}

.cmt-svg .cmt-leafno-hdr {
	text-anchor: end;
}

.cmt-svg .cmt-leafno.cmt-clickable {
	cursor: pointer;
	opacity: 0.9;
	text-decoration: underline;
}

.cmt-svg .cmt-title {
	font-size: 12px;
	opacity: 0.8;
}

.cmt-svg .cmt-arrow {
	font-size: 28px;
	opacity: 0.6;
}

/* Hover linking and proof tracing */
.cmt-hover circle,
.cmt-hover rect {
	stroke: var(--fg-color);
	stroke-width: 2.5;
}

.cmt-path circle,
.cmt-path rect,
.cmt-vnode.cmt-path circle {
	stroke: var(--fg-color);
	stroke-opacity: 1;
	stroke-width: 3;
	stroke-dasharray: none;
}

.cmt-sib circle,
.cmt-sib rect,
.cmt-ztri.cmt-sib {
	stroke: var(--fg-color);
	stroke-opacity: 1;
	stroke-width: 2;
	stroke-dasharray: 3 2;
}

.cmt-ztri.cmt-sib {
	fill-opacity: 0.15;
}

/* Controls */
.cmt-controls {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	align-items: center;
	margin-bottom: 0.75rem;
}

.cmt-controls button {
	font: inherit;
	font-size: 0.875rem;
	padding: 0.3rem 0.8rem;
	border: 1px solid color-mix(in srgb, var(--fg-color) 25%, transparent);
	border-radius: 999px;
	background: color-mix(in srgb, var(--fg-color) 5%, transparent);
	color: var(--fg-color);
	cursor: pointer;
}

.cmt-controls button:hover {
	background: color-mix(in srgb, var(--fg-color) 12%, transparent);
}

.cmt-panel + .cmt-panel {
	margin-top: 0.75rem;
	padding-top: 0.5rem;
	border-top: 1px dashed color-mix(in srgb, var(--fg-color) 20%, transparent);
}

.cmt-svg .cmt-panel-title {
	text-anchor: start;
	font-size: 13px;
	font-weight: 700;
	opacity: 0.85;
}

.cmt-status {
	font-size: 0.85rem;
	margin: 0.4rem 0 0;
	opacity: 0.85;
}

.cmt-svg .cmt-panel-stats {
	text-anchor: end;
	opacity: 0.7;
}

.cmt-svg .cmt-panel-growth {
	text-anchor: start;
	font-size: 11px;
	fill: var(--accent-color);
}

.cmt-svg .cmt-panel-trace {
	text-anchor: start;
	font-size: 10.5px;
}

/* Opaque backing so edges don't show through translucent nodes */
.cmt-svg circle.cmt-under {
	fill: var(--bg-color);
	fill-opacity: 1;
	stroke: none;
}

/* On phones, keep the interactive figure legible and let it scroll sideways */
@media (max-width: 600px) {
	.cmt-fig[data-fig="grow"] {
		overflow-x: auto;
		/* Don't let the SVG's min-width widen the article column */
		contain: inline-size;
		min-width: 0;
	}

	.cmt-fig[data-fig="grow"] .cmt-svg {
		min-width: 620px;
	}
}

/* Index labels travel between nodes when the layout renumbers the tree */
.cmt-svg .cmt-label {
	fill: #fff;
	font-weight: 700;
	paint-order: stroke;
	stroke: rgb(0 0 0 / 0.6);
	stroke-width: 3px;
	stroke-linejoin: round;
	pointer-events: none;
	transition: transform 0.9s cubic-bezier(0.6, 0, 0.3, 1), opacity 0.4s ease;
}

.cmt-svg .cmt-label.cmt-empty {
	fill: var(--fg-color);
	stroke: var(--bg-color);
	font-weight: 400;
}

/* Static cascading-index figure */
.cmt-spine {
	fill: none;
	stroke: var(--accent-color);
	stroke-width: 7;
	stroke-opacity: 0.35;
	stroke-linecap: round;
	stroke-linejoin: round;
}

.cmt-svg .cmt-spine-label {
	text-anchor: end;
	font-size: 11px;
	font-weight: 700;
	fill: var(--accent-color);
}

.cmt-svg .cmt-cell-label {
	fill: #fff;
	font-size: 9px;
	font-weight: 700;
}

.cmt-svg .cmt-count-label {
	font-size: 9px;
	opacity: 0.7;
}