/* =========================================================================
   Studio Variant — Reverse Engineering capability page

   This page shares the capability-page layer (scanning.css) so the header,
   section heads, steps, modules, route cards, records and the next-capability
   component are identical between chapters. Everything below is what this
   chapter needs on top, scoped to .re-* so it cannot reach another page.
   ========================================================================= */

/* ---------------------------------- Hero -------------------------------- */

/* Two lines, not three: the second carries the lighter tone. */
.re-hero-svg {
	max-height: min(70vh, 640px);
	margin-inline: auto;
}

.re-motif-list {
	grid-template-columns: repeat(5, minmax(0, 1fr));
}

/* --------------------------- Converging inputs --------------------------- */

/* Six possible starting points, a drawn fan, and one outcome. The fan is an
   SVG stretched to the grid, so each line genuinely lands on its own row. */
.re-converge {
	display: grid;
	grid-template-columns: minmax(0, 1fr) clamp(48px, 9vw, 132px) minmax(0, 1fr);
	align-items: center;
	gap: 0;
}
.re-inputs {
	display: grid;
	gap: var(--sv-3);
	list-style: none;
	margin: 0;
	padding: 0;
}
.re-inputs li {
	display: flex;
	align-items: center;
	gap: var(--sv-3);
	padding: var(--sv-3) var(--sv-4);
	border: 1px solid var(--sv-border);
	border-radius: var(--sv-radius-sm);
	background-color: var(--sv-surface);
	background-image: var(--sv-texture-carbon);
	font-family: var(--sv-font-mono);
	font-size: var(--sv-micro);
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--sv-mist-200);
}
.re-inputs li i {
	font-style: normal;
	color: var(--sv-titanium-deep);
}
.re-inputs li.is-lead {
	border-color: var(--sv-titanium-line);
	color: var(--sv-titanium-bright);
}
.re-fan {
	align-self: stretch;
	min-height: 240px;
}
.re-fan svg {
	display: block;
	width: 100%;
	height: 100%;
	color: var(--sv-graphite-500);
}
.re-outcome {
	display: flex;
	flex-direction: column;
	gap: var(--sv-4);
}
.re-outcome-node {
	padding: var(--sv-4) var(--sv-5);
	border: 1px solid var(--sv-titanium-line);
	border-radius: var(--sv-radius-sm);
	background-color: var(--sv-surface-raised);
	background-image: var(--sv-texture-carbon);
}
.re-outcome-node p {
	margin: 0;
}
.re-outcome-node .sv-label {
	color: var(--sv-titanium-bright);
}
.re-outcome-arrow {
	width: 1px;
	height: var(--sv-5);
	margin-left: var(--sv-5);
	background: var(--sv-border-strong);
	position: relative;
}
.re-outcome-arrow::after {
	content: "";
	position: absolute;
	left: -3px;
	bottom: 0;
	border-left: 3.5px solid transparent;
	border-right: 3.5px solid transparent;
	border-top: 5px solid var(--sv-border-strong);
}
.re-outcome-node.is-quiet {
	border-color: var(--sv-border);
	background-color: var(--sv-surface);
}

/* -------------------------- Six-stage sequence --------------------------- */

.re-sequence {
	display: grid;
	grid-template-columns: repeat(6, minmax(0, 1fr));
	gap: var(--sv-3);
	align-items: stretch;
}
.re-sequence .sc-stage {
	padding: var(--sv-3);
	gap: var(--sv-2);
}
.re-sequence .sc-stage + .sc-stage::before {
	left: calc(var(--sv-3) * -1 - 1px);
	width: var(--sv-3);
}

/* ---------------------- Original against reconsidered -------------------- */

.re-compare {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
	gap: var(--sv-5);
	align-items: stretch;
}
.re-panel {
	display: flex;
	flex-direction: column;
	gap: var(--sv-4);
	padding: clamp(var(--sv-4), 3vw, var(--sv-6));
	border: 1px solid var(--sv-border);
	border-radius: var(--sv-radius-md);
	background-color: var(--sv-surface);
	background-image: var(--sv-texture-carbon);
}
.re-panel h3 {
	margin: 0;
	font-family: var(--sv-font-display);
	font-size: var(--sv-h3);
	font-weight: 500;
	color: var(--sv-text);
}
.re-panel p {
	margin: 0;
}
.re-panel-art {
	display: grid;
	place-items: center;
	color: var(--sv-titanium);
	background: radial-gradient(ellipse 70% 60% at 50% 45%, rgba(185, 192, 196, 0.05), transparent 70%);
}
.re-versus {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--sv-3);
	font-family: var(--sv-font-mono);
	font-size: var(--sv-micro);
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--sv-text-faint);
}
.re-versus::before,
.re-versus::after {
	content: "";
	flex: 1;
	width: 1px;
	background: var(--sv-border);
}

/* Revision key, so the marked changes on the drawing mean something */
.re-key {
	display: grid;
	gap: var(--sv-2);
	list-style: none;
	margin: 0;
	padding: 0;
}
.re-key li {
	display: flex;
	gap: var(--sv-3);
	font-size: var(--sv-body-s);
	color: var(--sv-text-muted);
}
.re-key li b {
	flex: none;
	width: 22px;
	font-family: var(--sv-font-mono);
	font-size: var(--sv-micro);
	font-weight: 500;
	color: var(--sv-brass);
	padding-top: 3px;
}

/* ------------------- Material and process, fanning out ------------------- */

.re-tree {
	display: flex;
	flex-direction: column;
	align-items: center;
}
.re-tree .sc-trunk {
	max-width: 380px;
}
/* Four outward branches, drawn to the centre line of each route below. */
.re-fan-split {
	position: relative;
	width: 100%;
	height: 60px;
}
.re-fan-split::before {
	content: "";
	position: absolute;
	left: 12.5%;
	right: 12.5%;
	top: 0;
	height: 1px;
	background: var(--sv-border-strong);
}
.re-fan-split::after {
	content: "";
	position: absolute;
	left: 50%;
	top: -30px;
	width: 1px;
	height: 30px;
	background: var(--sv-border-strong);
}
.re-fan-split span {
	position: absolute;
	top: 0;
	bottom: 0;
	width: 1px;
	background: var(--sv-border-strong);
}
.re-fan-split span:nth-child(1) {
	left: 12.5%;
}
.re-fan-split span:nth-child(2) {
	left: 37.5%;
}
.re-fan-split span:nth-child(3) {
	left: 62.5%;
}
.re-fan-split span:nth-child(4) {
	left: 87.5%;
}
.re-fan-split span::after {
	content: "";
	position: absolute;
	left: -3px;
	bottom: 0;
	border-left: 3.5px solid transparent;
	border-right: 3.5px solid transparent;
	border-top: 5px solid var(--sv-border-strong);
}
.re-outlets {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: var(--sv-4);
	width: 100%;
}
.re-outlet {
	display: flex;
	flex-direction: column;
	gap: var(--sv-2);
	padding: var(--sv-4);
	border: 1px solid var(--sv-border);
	border-radius: var(--sv-radius-sm);
	background: var(--sv-bg-sunken);
}
.re-outlet p {
	margin: 0;
}
.re-outlet .sv-label {
	color: var(--sv-mist-200);
}
.re-outlet.is-external {
	border-style: dashed;
}

/* --------------------------- Recreate or redesign ----------------------- */

.re-choices {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: var(--sv-5);
}
.re-choice {
	display: flex;
	flex-direction: column;
	gap: var(--sv-4);
	padding: clamp(var(--sv-4), 3vw, var(--sv-6));
	border: 1px solid var(--sv-border);
	border-radius: var(--sv-radius-md);
	background-color: var(--sv-surface);
	background-image: var(--sv-texture-carbon);
	transition: border-color var(--sv-base) var(--sv-ease-precision);
}
.re-choice:hover,
.re-choice:focus-within {
	border-color: var(--sv-titanium-line);
}
.re-choice h3 {
	margin: 0;
	font-family: var(--sv-font-display);
	font-size: var(--sv-h3);
	font-weight: 500;
	color: var(--sv-text);
}
.re-choice p {
	margin: 0;
}
.re-choice-art {
	display: grid;
	place-items: center;
	color: var(--sv-titanium);
	background: radial-gradient(ellipse 70% 60% at 50% 45%, rgba(185, 192, 196, 0.05), transparent 70%);
}
/* The drawing resolves on hover or keyboard focus: the geometry updates
   rather than a card lighting up. */
.re-delta {
	opacity: 0;
	transition: opacity var(--sv-slow) var(--sv-ease-precision);
}
.re-choice:hover .re-delta,
.re-choice:focus-within .re-delta {
	opacity: 1;
}
@media (hover: none) {
	.re-delta {
		opacity: 1;
	}
}
.re-uses {
	margin-top: auto;
	display: grid;
	gap: var(--sv-2);
	list-style: none;
	margin: 0;
	padding: 0;
}
.re-uses li {
	position: relative;
	padding-left: var(--sv-4);
	font-size: var(--sv-body-s);
	color: var(--sv-text-muted);
}
.re-uses li::before {
	content: "";
	position: absolute;
	left: 0;
	top: 0.65em;
	width: 9px;
	height: 1px;
	background: var(--sv-titanium-deep);
}

/* ---------------------- Documentation from reality ---------------------- */

.re-docs {
	display: grid;
	grid-template-columns: repeat(5, minmax(0, 1fr));
	gap: var(--sv-3);
	align-items: stretch;
}
.re-doc {
	position: relative;
	display: flex;
	flex-direction: column;
	gap: var(--sv-2);
	padding: var(--sv-3);
	border: 1px solid var(--sv-border-hairline);
	border-radius: var(--sv-radius-sm);
	background: rgba(8, 9, 10, 0.4);
}
.re-doc + .re-doc::before {
	content: "";
	position: absolute;
	left: calc(var(--sv-3) * -1 - 1px);
	top: 50%;
	width: var(--sv-3);
	height: 1px;
	background: var(--sv-graphite-500);
}
.re-doc-art {
	aspect-ratio: 4 / 3;
	display: grid;
	place-items: center;
	color: var(--sv-titanium);
}
.re-doc p {
	margin: 0;
}

/* ------------------------------ Responsive ------------------------------ */

@media (max-width: 1080px) {
	.re-motif-list {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
	.re-sequence {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
	.re-sequence .sc-stage:nth-child(4)::before {
		display: none;
	}
	.re-docs {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
	.re-doc:nth-child(4)::before {
		display: none;
	}
	.re-outlets {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
	/* Two branches instead of four when the routes sit two-up. */
	.re-fan-split::before {
		left: 25%;
		right: 25%;
	}
	.re-fan-split span:nth-child(1) {
		left: 25%;
	}
	.re-fan-split span:nth-child(2) {
		left: 75%;
	}
	.re-fan-split span:nth-child(3),
	.re-fan-split span:nth-child(4) {
		display: none;
	}
}

@media (max-width: 860px) {
	.re-converge {
		grid-template-columns: minmax(0, 1fr);
		gap: var(--sv-5);
	}
	/* The fan turns into a single stem when the columns stack. */
	.re-fan {
		min-height: 0;
		height: var(--sv-6);
		width: 1px;
		justify-self: center;
		background: var(--sv-border-strong);
	}
	.re-fan svg {
		display: none;
	}
	.re-compare {
		grid-template-columns: minmax(0, 1fr);
	}
	.re-versus {
		flex-direction: row;
	}
	.re-versus::before,
	.re-versus::after {
		width: auto;
		height: 1px;
	}
	.re-choices {
		grid-template-columns: minmax(0, 1fr);
	}
	.re-sequence {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
	.re-sequence .sc-stage:nth-child(odd)::before {
		display: none;
	}
	.re-docs {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
	.re-doc:nth-child(odd)::before {
		display: none;
	}
}

@media (max-width: 640px) {
	.re-motif-list {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
	/* "Start a reverse engineering project" is a long label. Held on one line
	   it sets the hero grid wider than a phone, so on a phone it wraps. */
	[data-sv-capability="reverse-engineering"] .sc-actions .sv-btn,
	[data-sv-capability="reverse-engineering"] .sc-close-actions .sv-btn {
		white-space: normal;
		text-align: center;
	}
	/* The hero drawing renders about a third of its design width on a phone,
	   which is too small for its call-outs. The annotation text and the
	   leaders that point at it stand down, the inspection circles stay on the
	   geometry, and the phase read-out tells the story instead. */
	.re-sheet-note,
	.re-lead {
		display: none;
	}
	.re-sheet text {
		font-size: 26px;
		letter-spacing: 2.4px;
	}
	.re-hero-svg text {
		display: none;
	}
	.re-hero-svg [data-re-phase] {
		display: block;
		font-size: 34px;
		letter-spacing: 4px;
	}
	.re-sequence,
	.re-docs {
		grid-template-columns: minmax(0, 1fr);
	}
	.re-sequence .sc-stage::before,
	.re-doc::before {
		display: none;
	}
	.re-outlets {
		grid-template-columns: minmax(0, 1fr);
	}
	.re-fan-split {
		height: var(--sv-5);
	}
	.re-fan-split::before,
	.re-fan-split span:nth-child(2) {
		display: none;
	}
	.re-fan-split span:nth-child(1) {
		left: 50%;
	}
	.re-fan-split::after {
		top: -20px;
		height: 20px;
	}
}