/* LSSwapBible.com — garage/performance theme. Tokens first; light + dark. */
:root {
  --bg: #f6f5f2; --surface: #ffffff; --surface-2: #efede8; --border: #dedad2;
  --text: #15161a; --text-2: #474a52; --muted: #737680;
  --accent: #d7261e; --accent-2: #ff4b3e; --accent-ink: #ffffff; --link: #b91c1c; --link-hover: #7f1d1d;
  --ink: #121418; --ink-2: #1b1e24; --ink-3: #262a32; --ink-text: #f3f1ec; --ink-muted: #a3a7b0;
  --chip: #ece7dd; --good: #1f7a3f; --warn: #a15c00; --bad: #b42318;
  --radius: 12px; --shadow: 0 1px 2px rgba(0,0,0,.06), 0 6px 20px rgba(0,0,0,.06);
  --shadow-lift: 0 2px 4px rgba(0,0,0,.08), 0 14px 32px rgba(0,0,0,.12);
  --maxw: 1160px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --display: "Barlow Condensed", "Oswald", "Arial Narrow", system-ui, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101216; --surface: #171a1f; --surface-2: #1e2229; --border: #2e333c;
    --text: #f1efe9; --text-2: #c8c5bd; --muted: #9a9ea8;
    --accent: #ff4b3e; --accent-2: #ff6b61; --accent-ink: #1a0605; --link: #ff7a70; --link-hover: #ffa39c;
    --ink: #0b0d10; --ink-2: #14171c; --ink-3: #1f232a;
    --chip: #262a32; --good: #4cc27a; --warn: #f0a93b; --bad: #ff7b72;
    --shadow: 0 1px 2px rgba(0,0,0,.5); --shadow-lift: 0 10px 30px rgba(0,0,0,.55);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 var(--font); }
a { color: var(--link); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--link-hover); }
img, svg { max-width: 100%; height: auto; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 16px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 20; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ---------- header ---------- */
.site-header { background: #ffffff; color: #111214; position: sticky; top: 0; z-index: 10; border-bottom: 4px solid var(--accent); box-shadow: 0 2px 10px rgba(0,0,0,.06); }
.site-header .wrap { display: flex; align-items: center; gap: 18px; min-height: 64px; flex-wrap: wrap; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: #111214; }
.logo img { width: auto; height: 30px; display: block; }
.logo .wm { font: italic 900 30px/1 "Saira", var(--display); letter-spacing: .005em; text-transform: uppercase; }
.logo .wm .r { color: #d7261e; } .logo .wm .k { color: #111214; }
.logo:hover { color: #111214; }
.nav { display: flex; gap: 2px; flex-wrap: wrap; margin-left: auto; }
.nav a { color: #3b3e46; text-decoration: none; padding: 8px 12px; border-radius: 8px; font: 700 15px/1 var(--display); letter-spacing: .06em; text-transform: uppercase; }
.nav a:hover { color: #111214; background: #f1efea; }
.nav a[aria-current="page"] { color: #111214; box-shadow: inset 0 -3px 0 var(--accent); border-radius: 8px 8px 0 0; }

/* ---------- hero (home) ---------- */
.hero-band { background: var(--ink); color: var(--ink-text); position: relative; overflow: hidden; }
.hero-band::before { content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 32px 32px; mask-image: linear-gradient(180deg, #000 30%, transparent 100%); -webkit-mask-image: linear-gradient(180deg, #000 30%, transparent 100%); }
.hero-band::after { content: ""; position: absolute; right: -120px; top: -140px; width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(215,38,30,.35), transparent 65%); }
.hero-band .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr; gap: 32px; align-items: center; padding-top: 56px; padding-bottom: 56px; }
.hero-band .kicker { font: 700 14px/1 var(--display); letter-spacing: .2em; text-transform: uppercase; color: var(--accent-2); margin: 0 0 14px; }
.hero-band h1 { font: 800 clamp(44px, 7vw, 84px)/.92 var(--display); text-transform: uppercase; letter-spacing: -.01em; margin: 0 0 18px; color: #fff; }
.hero-band h1 em { font-style: normal; color: var(--accent-2); }
.hero-band .lede { color: #c9ccd3; font-size: 19px; max-width: 580px; }
.hero-band .emblem { justify-self: center; width: min(440px, 95%); filter: drop-shadow(0 18px 40px rgba(227,38,27,.25)); }
.cta { display: inline-flex; align-items: center; gap: 8px; background: var(--accent); color: #fff; font: 700 18px/1 var(--display); letter-spacing: .06em; text-transform: uppercase;
  padding: 14px 22px; border-radius: 10px; text-decoration: none; margin: 14px 10px 0 0; box-shadow: 0 6px 18px rgba(215,38,30,.35); transition: transform .15s, filter .15s; }
.cta:hover { color: #fff; filter: brightness(1.08); transform: translateY(-1px); }
.cta.alt { background: transparent; color: #fff; box-shadow: inset 0 0 0 2px rgba(255,255,255,.35); }
.cta.alt:hover { box-shadow: inset 0 0 0 2px #fff; }
main .cta.alt { color: var(--text); box-shadow: inset 0 0 0 2px var(--border); }
.stat-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; margin-top: 34px; }
.stat { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); border-radius: 10px; padding: 12px 14px; }
.stat b { display: block; font: 800 30px/1 var(--display); color: #fff; }
.stat span { font-size: 13px; color: var(--ink-muted); }

/* ---------- content ---------- */
main { padding: 30px 0 64px; }
h1 { font: 800 clamp(34px, 5vw, 54px)/1 var(--display); text-transform: uppercase; letter-spacing: 0; margin: 6px 0 14px; }
h2 { font: 800 30px/1.05 var(--display); text-transform: uppercase; letter-spacing: .01em; margin: 40px 0 14px; display: flex; align-items: center; gap: 12px; }
h2::before { content: ""; width: 6px; height: 26px; background: var(--accent); border-radius: 2px; flex: none; }
h3 { font: 700 21px/1.2 var(--display); letter-spacing: .01em; margin: 24px 0 8px; }
.lede { font-size: 18px; color: var(--text-2); max-width: 780px; }
.crumbs { font: 600 13px/1 var(--display); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin: 0 0 8px; }
.crumbs a { color: var(--muted); text-decoration: none; } .crumbs a:hover { color: var(--accent); }
.prose { max-width: 800px; }
.prose h2 { font-size: 26px; } .prose h2::before { height: 22px; }
.prose table, table.data { border-collapse: separate; border-spacing: 0; width: 100%; margin: 16px 0 24px; font-size: 15px; display: table; overflow-x: auto;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.prose th, .prose td, table.data th, table.data td { border-bottom: 1px solid var(--border); padding: 10px 12px; text-align: left; vertical-align: top; }
.prose tr:last-child td, table.data tr:last-child td { border-bottom: 0; }
.prose th, table.data th { background: var(--ink-2); color: #fff; font: 700 14px/1.2 var(--display); letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; }
.prose th:first-child, table.data th:first-child { border-top-left-radius: calc(var(--radius) - 1px); }
.prose th:last-child, table.data th:last-child { border-top-right-radius: calc(var(--radius) - 1px); }
table.data tbody tr:hover td { background: var(--surface-2); }
code { font-family: var(--mono); font-size: .9em; background: var(--chip); padding: 2px 6px; border-radius: 5px; }
blockquote { margin: 16px 0; padding: 10px 16px; border-left: 4px solid var(--accent); background: var(--surface-2); border-radius: 0 8px 8px 0; }

/* ---------- cards ---------- */
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.card { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow);
  display: block; color: var(--text); text-decoration: none; transition: transform .15s, box-shadow .15s, border-color .15s; overflow: hidden; }
a.card::after { content: "→"; position: absolute; right: 16px; bottom: 12px; font: 700 20px/1 var(--display); color: var(--accent); opacity: 0; transform: translateX(-6px); transition: .15s; }
a.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); border-color: var(--accent); color: var(--text); }
a.card:hover::after { opacity: 1; transform: none; }
.card .eyebrow { font: 700 12px/1 var(--display); letter-spacing: .16em; text-transform: uppercase; color: var(--accent); margin-bottom: 6px; }
.card h3 { margin: 0 0 6px; font-size: 22px; line-height: 1.1; }
.card p { margin: 0; color: var(--text-2); font-size: 14px; }
.card .ico { width: 44px; height: 44px; border-radius: 10px; background: var(--ink-2); color: var(--accent-2); display: grid; place-items: center; margin-bottom: 12px; }
.card .ico svg { width: 26px; height: 26px; }
.card.tool { border-top: 3px solid var(--accent); }
.chip { display: inline-block; background: var(--chip); color: var(--text-2); border-radius: 999px; padding: 3px 11px; font: 700 13px/1.3 var(--display); letter-spacing: .06em; text-transform: uppercase; margin: 0 6px 6px 0; }
.chip.good { color: var(--good); } .chip.warn { color: var(--warn); }

/* ---------- notices ---------- */
.disclosure { font-size: 13px; color: var(--muted); background: var(--surface-2); border-radius: 8px; padding: 8px 12px; margin: 12px 0; }
.note { border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 8px; padding: 12px 16px; background: var(--surface); margin: 18px 0; font-size: 15px; }
.sources { font-size: 14px; color: var(--text-2); border-top: 1px solid var(--border); margin-top: 36px; padding-top: 14px; }
.sources b { font: 800 18px/1 var(--display); text-transform: uppercase; letter-spacing: .06em; }
.sources ol { padding-left: 20px; } .sources li { margin: 4px 0; }
.figure { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; margin: 18px 0; }
figure { margin: 0; } figcaption { margin-top: 6px; }
.figure img { display: block; margin: 0 auto; }
.stats { display: flex; gap: 12px; flex-wrap: wrap; margin: 16px 0 4px; color: var(--text-2); font-size: 14px; }
.stats > div { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; min-width: 120px; }
.stats b { color: var(--text); font: 800 30px/1 var(--display); display: block; }
.muted { color: var(--muted); font-size: 14px; }

/* ---------- tools ---------- */
.tool { background: var(--surface); border: 1px solid var(--border); border-top: 4px solid var(--accent); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin: 18px 0; }
.tool label { display: block; font: 700 14px/1.2 var(--display); letter-spacing: .08em; text-transform: uppercase; color: var(--text-2); margin: 12px 0 6px; }
.tool input, .tool select { width: 100%; max-width: 380px; font: inherit; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); }
.tool input:focus, .tool select:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px rgba(215,38,30,.18); }
.tool .row { display: flex; gap: 16px; flex-wrap: wrap; } .tool .row > div { flex: 1 1 200px; }
.tool .result { margin-top: 18px; padding: 16px; background: var(--ink-2); color: var(--ink-text); border-radius: 10px; font-size: 16px; }
.tool .result .stats > div { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.1); color: var(--ink-muted); }
.tool .result .stats b { color: #fff; }
.tool .result a { color: var(--accent-2); } .tool .result .muted { color: var(--ink-muted); }
.tool .result table.data { color: var(--text); }

/* engine size comparison bars (single-hue pair per dataviz rules) */
:root { --series-a: #2a78d6; --series-b: #9ab6d9; }
@media (prefers-color-scheme: dark) { :root { --series-a: #3987e5; --series-b: #5c6f88; } }
.cmp { display: grid; grid-template-columns: 130px 1fr; gap: 10px; align-items: center; margin: 12px 0; }
.cmp-l { font: 700 15px/1.2 var(--display); text-transform: uppercase; letter-spacing: .06em; color: var(--text-2); }
.cmp-bars { display: grid; gap: 2px; padding-right: 70px; }
.cmp-bar { height: 22px; border-radius: 0 4px 4px 0; min-width: 2px; position: relative; }
.cmp-bar.a { background: var(--series-a); } .cmp-bar.b { background: var(--series-b); }
.cmp-bar span { position: absolute; left: calc(100% + 8px); top: 1px; font-size: 13px; color: var(--text); white-space: nowrap; }
.cmp-key { font-size: 14px; color: var(--text-2); } .sw { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin: 0 6px 0 12px; vertical-align: -1px; }
.sw.a { background: var(--series-a); } .sw.b { background: var(--series-b); }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: var(--ink-muted); padding: 40px 0 28px; font-size: 14px; border-top: 3px solid var(--accent); }
.site-footer .cols { display: grid; gap: 24px; grid-template-columns: 1.4fr 1fr 1fr; }
.site-footer a { color: #d6d8dd; text-decoration: none; line-height: 2; } .site-footer a:hover { color: var(--accent-2); }
.site-footer .logo { margin-bottom: 10px; background: #fff; padding: 8px 12px; border-radius: 8px; }
.site-footer .muted { color: #7d828c; margin-top: 26px; border-top: 1px solid #262a32; padding-top: 16px; }
.site-footer h4 { font: 700 14px/1 var(--display); letter-spacing: .16em; text-transform: uppercase; color: #fff; margin: 4px 0 10px; }

@media (max-width: 860px) {
  .hero-band .wrap { grid-template-columns: 1fr; padding-top: 36px; padding-bottom: 40px; }
  .hero-band .emblem { display: none; }
  .stat-row { grid-template-columns: repeat(3, 1fr); }
  .site-footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav { margin-left: 0; width: 100%; overflow-x: auto; flex-wrap: nowrap; }
  .nav a { padding: 8px 9px; font-size: 14px; white-space: nowrap; }
  .logo .wm { font-size: 23px; }
  h2 { font-size: 25px; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .site-footer .cols { grid-template-columns: 1fr; }
  .cmp { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- home hero v2 ---------- */
.hero-grid { grid-template-columns: 1.1fr .9fr !important; gap: 48px !important; align-items: center; }
.hero-band .hero-copy h1 { font-size: clamp(48px, 7vw, 92px); }
.hero-band .lede.small { font-size: 16px; color: #9ea3ad; margin-top: -4px; }
.start-card { background: #ffffff; color: #111214; border-radius: 16px; padding: 26px; box-shadow: 0 24px 60px rgba(0,0,0,.45); border-top: 5px solid var(--accent); }
.start-card h2 { margin: 0 0 14px; font-size: 28px; color: #111214; }
.start-card h2::before { display: none; }
.start-card select { width: 100%; font: 500 16px/1.2 var(--font); padding: 13px 12px; border: 2px solid #d9d6cf; border-radius: 10px; background: #fff; color: #111214; }
.start-card select:focus { border-color: var(--accent); outline: none; }
.start-card .cta { width: 100%; justify-content: center; margin: 12px 0 0; border: 0; cursor: pointer; }
.start-card .muted { margin: 14px 0 0; color: #5b5f68; }
.start-card .muted a { color: #b91c1c; font-weight: 600; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.fact-band { background: #f0eee9; border-bottom: 1px solid var(--border); }
.fact-band .wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; padding-top: 26px; padding-bottom: 26px; }
.fact-band b { display: block; font: 800 30px/1.05 var(--display); text-transform: uppercase; color: #111214; }
.fact-band span { color: #4a4d55; font-size: 15px; }
@media (prefers-color-scheme: dark) { .fact-band { background: #16191e; } .fact-band b { color: #f1efe9; } .fact-band span { color: #b9bcc4; } }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr !important; gap: 28px !important; } .fact-band .wrap { grid-template-columns: 1fr; gap: 16px; } }

/* tool card dash readouts (replace icons) */
.readout { display: inline-flex; align-items: baseline; gap: 8px; background: #0e1013; border: 1px solid #262a32; border-radius: 8px; padding: 8px 12px; margin-bottom: 14px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.03), inset 0 -8px 16px rgba(0,0,0,.45); }
.readout b { font: 700 24px/1 "Barlow Condensed", var(--display); letter-spacing: .04em; color: #ff4b3e; text-shadow: 0 0 10px rgba(255,75,62,.45); font-variant-numeric: tabular-nums; }
.readout span { font: 600 11px/1 var(--display); letter-spacing: .18em; text-transform: uppercase; color: #8b909a; }
a.card.tool:hover .readout b { color: #ff6b61; }

@media (max-width: 760px) { .prose table, table.data { display: block; } }