/* ==========================================================================
   Shared stylesheet for wavespeed model reference pages.
   Edit here, then run _shared/sync.sh to copy into each Space.
   ========================================================================== */

:root {
	--bg: #ffffff;
	--bg-soft: #f7f8fa;
	--bg-code: #f4f5f7;
	--fg: #14161a;
	--fg-muted: #5b6270;
	--fg-faint: #868d9b;
	--line: #e4e6eb;
	--line-strong: #d2d6de;
	--accent: #2f5bd7;
	--accent-soft: #eef2fd;
	--radius: 10px;
	--radius-sm: 6px;
	--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
	--sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
		"Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
	--maxw: 880px;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: #0e1014;
		--bg-soft: #161920;
		--bg-code: #14171d;
		--fg: #e7e9ee;
		--fg-muted: #99a1b0;
		--fg-faint: #6f7788;
		--line: #252a33;
		--line-strong: #333a46;
		--accent: #7ba1ff;
		--accent-soft: #172136;
	}
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	-webkit-text-size-adjust: 100%;
	scroll-behavior: smooth;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--fg);
	font-family: var(--sans);
	font-size: 16px;
	line-height: 1.65;
	-webkit-font-smoothing: antialiased;
}

a {
	color: var(--accent);
	text-decoration: none;
}

a:hover {
	text-decoration: underline;
}

img,
video {
	max-width: 100%;
	height: auto;
	display: block;
}

hr {
	border: 0;
	border-top: 1px solid var(--line);
	margin: 3rem 0;
}

.wrap {
	max-width: var(--maxw);
	margin: 0 auto;
	padding: 0 20px;
}

/* --- header ------------------------------------------------------------- */

.site-header {
	border-bottom: 1px solid var(--line);
	background: var(--bg);
	position: sticky;
	top: 0;
	z-index: 20;
}

.site-header .wrap {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	height: 56px;
}

.brand {
	display: flex;
	align-items: center;
	gap: 9px;
	font-weight: 600;
	font-size: 0.9rem;
	color: var(--fg);
	letter-spacing: -0.01em;
}

.brand:hover {
	text-decoration: none;
}

.brand-mark {
	width: 20px;
	height: 20px;
	border-radius: 5px;
	background: var(--accent);
	flex: 0 0 auto;
	position: relative;
}

.brand-mark::after {
	content: "";
	position: absolute;
	inset: 6px 4px;
	border-left: 2px solid var(--bg);
	border-right: 2px solid var(--bg);
	opacity: 0.85;
}

.header-nav {
	display: flex;
	align-items: center;
	gap: 20px;
	font-size: 0.86rem;
}

.header-nav a {
	color: var(--fg-muted);
}

.header-nav a:hover {
	color: var(--fg);
	text-decoration: none;
}

.brand span:last-child {
	white-space: nowrap;
}

@media (max-width: 760px) {
	.header-nav a.opt {
		display: none;
	}
}

/* On phones the in-page anchors aren't worth the crowding — the page is short
   enough to scroll, and the one outbound link needs the room. */
@media (max-width: 560px) {
	.header-nav a.jump {
		display: none;
	}
}

/* --- hero --------------------------------------------------------------- */

.hero {
	padding: 56px 0 12px;
}

.eyebrow {
	font-size: 0.72rem;
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--fg-faint);
	margin: 0 0 14px;
}

h1 {
	font-size: 2.6rem;
	line-height: 1.15;
	letter-spacing: -0.025em;
	font-weight: 700;
	margin: 0 0 14px;
}

.lede {
	font-size: 1.12rem;
	color: var(--fg-muted);
	margin: 0;
	max-width: 68ch;
}

@media (max-width: 620px) {
	h1 {
		font-size: 2rem;
	}
	.hero {
		padding-top: 36px;
	}
}

/* metadata strip under the title */
.meta {
	display: flex;
	flex-wrap: wrap;
	gap: 8px 10px;
	margin: 26px 0 0;
	padding: 0;
	list-style: none;
}

.meta li {
	font-size: 0.78rem;
	font-family: var(--mono);
	color: var(--fg-muted);
	border: 1px solid var(--line);
	border-radius: 999px;
	padding: 3px 11px;
	white-space: nowrap;
}

.meta li b {
	font-weight: 500;
	color: var(--fg-faint);
}

/* --- sections ----------------------------------------------------------- */

section {
	padding: 44px 0 0;
}

h2 {
	font-size: 1.35rem;
	letter-spacing: -0.015em;
	font-weight: 650;
	margin: 0 0 6px;
	scroll-margin-top: 76px;
}

.section-note {
	color: var(--fg-muted);
	margin: 0 0 22px;
	font-size: 0.95rem;
	max-width: 70ch;
}

h3 {
	font-size: 1rem;
	font-weight: 620;
	margin: 0 0 6px;
	letter-spacing: -0.005em;
}

p {
	margin: 0 0 1rem;
}

/* --- cards -------------------------------------------------------------- */

.grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
	gap: 14px;
	margin: 0;
}

.card {
	border: 1px solid var(--line);
	border-radius: var(--radius);
	padding: 18px 18px 16px;
	background: var(--bg);
}

.card p {
	margin: 0;
	color: var(--fg-muted);
	font-size: 0.9rem;
	line-height: 1.6;
}

.card p + p {
	margin-top: 0.6rem;
}

/* --- figures ------------------------------------------------------------ */

figure {
	margin: 0 0 18px;
	border: 1px solid var(--line);
	border-radius: var(--radius);
	overflow: hidden;
	background: var(--bg-soft);
}

figure img,
figure video {
	width: 100%;
	display: block;
}

figcaption {
	font-size: 0.82rem;
	color: var(--fg-muted);
	padding: 10px 14px;
	border-top: 1px solid var(--line);
	background: var(--bg);
}

figcaption b {
	color: var(--fg);
	font-weight: 600;
}

.figure-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 14px;
}

.figure-grid figure {
	margin: 0;
}

/* --- tables ------------------------------------------------------------- */

.table-scroll {
	overflow-x: auto;
	border: 1px solid var(--line);
	border-radius: var(--radius);
}

table {
	border-collapse: collapse;
	width: 100%;
	font-size: 0.88rem;
	min-width: 480px;
}

th,
td {
	text-align: left;
	padding: 10px 14px;
	border-bottom: 1px solid var(--line);
}

th {
	font-weight: 600;
	font-size: 0.76rem;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	color: var(--fg-faint);
	background: var(--bg-soft);
	white-space: nowrap;
}

tbody tr:last-child td {
	border-bottom: 0;
}

td code {
	font-size: 0.85em;
}

/* --- code --------------------------------------------------------------- */

.code {
	border: 1px solid var(--line);
	border-radius: var(--radius);
	overflow: hidden;
	background: var(--bg-code);
	margin: 0 0 14px;
}

.code-tabs {
	display: flex;
	gap: 2px;
	padding: 6px 6px 0;
	border-bottom: 1px solid var(--line);
	background: var(--bg-soft);
}

.code-tabs button {
	appearance: none;
	border: 0;
	background: transparent;
	font-family: var(--mono);
	font-size: 0.78rem;
	color: var(--fg-muted);
	padding: 7px 12px;
	border-radius: var(--radius-sm) var(--radius-sm) 0 0;
	cursor: pointer;
	line-height: 1;
}

.code-tabs button:hover {
	color: var(--fg);
}

.code-tabs button[aria-selected="true"] {
	background: var(--bg-code);
	color: var(--fg);
	font-weight: 600;
	box-shadow: inset 0 -1px 0 var(--bg-code);
}

.code pre {
	margin: 0;
	padding: 16px 18px;
	overflow-x: auto;
	font-family: var(--mono);
	font-size: 0.815rem;
	line-height: 1.65;
	tab-size: 2;
}

.code pre[hidden] {
	display: none;
}

code {
	font-family: var(--mono);
	font-size: 0.88em;
}

p code,
li code {
	background: var(--bg-code);
	border: 1px solid var(--line);
	border-radius: 4px;
	padding: 1px 5px;
}

/* --- links list --------------------------------------------------------- */

.links {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
	gap: 10px;
	list-style: none;
	padding: 0;
	margin: 0;
}

.links a {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 10px;
	border: 1px solid var(--line);
	border-radius: var(--radius-sm);
	padding: 11px 14px;
	color: var(--fg);
	font-size: 0.9rem;
	font-weight: 500;
}

.links a:hover {
	border-color: var(--line-strong);
	background: var(--bg-soft);
	text-decoration: none;
}

.links .host {
	font-family: var(--mono);
	font-size: 0.72rem;
	color: var(--fg-faint);
	font-weight: 400;
}

/* --- run-it callout (the one place we ask for a click) ------------------- */

.callout {
	border: 1px solid var(--line);
	border-left: 3px solid var(--accent);
	background: var(--bg-soft);
	border-radius: var(--radius-sm);
	padding: 16px 18px;
	font-size: 0.92rem;
	color: var(--fg-muted);
}

.callout p {
	margin: 0;
}

.callout p + p {
	margin-top: 0.5rem;
}

.btn-row {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	margin-top: 18px;
}

.btn {
	display: inline-flex;
	align-items: center;
	gap: 7px;
	border-radius: var(--radius-sm);
	padding: 9px 16px;
	font-size: 0.89rem;
	font-weight: 550;
	border: 1px solid var(--accent);
	background: var(--accent);
	color: #fff;
	line-height: 1.4;
}

.btn:hover {
	text-decoration: none;
	filter: brightness(1.08);
}

.btn.secondary {
	background: transparent;
	color: var(--fg);
	border-color: var(--line-strong);
}

.btn.secondary:hover {
	background: var(--bg-soft);
	filter: none;
}

@media (prefers-color-scheme: dark) {
	.btn {
		color: #0e1014;
	}
}

/* --- footer ------------------------------------------------------------- */

.site-footer {
	margin-top: 64px;
	border-top: 1px solid var(--line);
	padding: 26px 0 44px;
	font-size: 0.83rem;
	color: var(--fg-faint);
}

.site-footer .wrap {
	display: flex;
	flex-wrap: wrap;
	gap: 10px 24px;
	align-items: baseline;
	justify-content: space-between;
}

.site-footer a {
	color: var(--fg-muted);
}

.site-footer p {
	margin: 0;
	max-width: 60ch;
}

.footer-links {
	display: flex;
	gap: 16px;
	flex-wrap: wrap;
}