/* TankIt — Petrol Dark, derived from app Theme.swift */
:root {
  --bg: #0d0e10;
  --bg-elev: #16171a;
  --bg-subtle: #1d1e22;
  --ink: #f0eee9;
  --ink-muted: rgba(240, 238, 233, 0.56);
  --ink-faint: rgba(240, 238, 233, 0.32);
  --ink-ghost: rgba(240, 238, 233, 0.16);
  --border: rgba(240, 238, 233, 0.08);
  --border-strong: rgba(240, 238, 233, 0.16);
  --accent: #d4a427;
  --accent-soft: rgba(212, 164, 39, 0.14);
  --accent-ink: #0d0e10;
  --danger: #e05c3a;

  --r-card: 18px;
  --r-small: 12px;

  --font-display: "Inter Tight", "Inter", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: var(--accent-ink); }

/* ---------- Layout ---------- */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.wrap-narrow { max-width: 880px; margin: 0 auto; padding: 0 32px; }

/* ---------- Top nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(13, 14, 16, 0.72);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 26px; height: 26px;
  border-radius: 7px;
  background: var(--accent);
  display: grid;
  place-items: center;
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  overflow: hidden;
}
.brand-mark svg {
  width: 64%;
  height: 64%;
  display: block;
  fill: var(--accent-ink);
}
.brand-mark--lg { width: 36px; height: 36px; border-radius: 9px; }
.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
  font-size: 14px;
  color: var(--ink-muted);
}
.nav-links a:not(.nav-cta) {
  position: relative;
  padding: 4px 0;
  transition: color 120ms ease;
}
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}
.nav-links a:not(.nav-cta):hover { color: var(--ink); }
.nav-links a:not(.nav-cta):hover::after { transform: scaleX(1); }
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  background: var(--ink);
  color: var(--bg);
  padding: 9px 14px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--accent); color: var(--accent-ink); }

/* ---------- Type ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: clamp(48px, 7vw, 96px); line-height: 0.98; letter-spacing: -0.035em; }
h2 { font-size: clamp(32px, 4.5vw, 56px); line-height: 1.05; letter-spacing: -0.025em; }
h3 { font-size: 22px; line-height: 1.25; }
p { margin: 0; text-wrap: pretty; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 500;
}
.muted { color: var(--ink-muted); }
.faint { color: var(--ink-faint); }
.mono { font-family: var(--font-mono); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  font-family: var(--font-display);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 120ms ease, background 120ms ease, color 120ms ease;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--border-strong);
}
.btn-ghost:hover { border-color: var(--ink); }

/* ---------- Sections ---------- */
section { padding: 120px 0; border-top: 1px solid var(--border); }
section:first-of-type { border-top: none; }

.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  margin-bottom: 64px;
  align-items: end;
}
.section-head .eyebrow { display: block; margin-bottom: 16px; }
.section-head p { color: var(--ink-muted); font-size: 17px; max-width: 56ch; }

@media (max-width: 800px) {
  .section-head { grid-template-columns: 1fr; gap: 24px; }
  section { padding: 80px 0; }
  .wrap, .wrap-narrow { padding: 0 20px; }
  .nav-inner { padding: 16px 20px; }
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ---------- Image / GIF placeholder ---------- */
.media {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  overflow: hidden;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(240, 238, 233, 0.025) 0px,
    rgba(240, 238, 233, 0.025) 1px,
    transparent 1px,
    transparent 14px
  );
}
.media-label {
  position: absolute;
  top: 14px;
  left: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  background: rgba(13, 14, 16, 0.7);
  border: 1px solid var(--border);
  padding: 5px 9px;
  border-radius: 6px;
  text-transform: lowercase;
}
.media-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 7px;
  border-radius: 5px;
  letter-spacing: 0.06em;
}
.media-center {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  pointer-events: none;
  text-align: center;
  padding: 40px;
}
.media-center .dim {
  display: block;
  color: var(--ink-ghost);
  font-size: 10px;
  margin-top: 6px;
}

/* Real images / video fill the frame, and hide the striped placeholder hints */
.media > img,
.media > video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  z-index: 1;
}
.media:has(> img),
.media:has(> video) { background-image: none; }
.media:has(> img) .media-label,
.media:has(> img) .media-tag,
.media:has(> img) .media-center,
.media:has(> video) .media-label,
.media:has(> video) .media-tag,
.media:has(> video) .media-center { display: none; }

/* aspect helpers */
.ar-phone { aspect-ratio: 9/19.5; }
.ar-wide { aspect-ratio: 16/9; }
.ar-square { aspect-ratio: 1/1; }
.ar-3-4 { aspect-ratio: 3/4; }
.ar-4-3 { aspect-ratio: 4/3; }
.ar-carplay { aspect-ratio: 5/3; }

/* Phone screenshots include their own UI background — contain inside the frame
   with breathing room rather than cropping the bottom toolbar off. */
.media.phone-shot { background: #08090b; }
.media.phone-shot > img { object-fit: contain; padding: 12px; }

/* ---------- Chips (reused on index + behind) ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 24px; }
.chip {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted);
  border: 1px solid var(--border-strong); padding: 5px 10px;
  border-radius: 999px; letter-spacing: 0.04em;
}
.chip.accent { color: var(--accent); border-color: var(--accent); }

/* ---------- Long-form prose pages (privacy / support) ---------- */
.prose {
  max-width: 760px; margin: 0 auto;
  padding: 64px 0 96px;
}
.prose h1 {
  font-size: clamp(40px, 5vw, 64px); line-height: 1.02;
  letter-spacing: -0.025em; margin-bottom: 16px;
}
.prose h1 .accent { color: var(--accent); }
.prose .lede {
  font-size: 19px; color: var(--ink-muted);
  line-height: 1.5; margin-bottom: 40px; max-width: 60ch;
}
.prose h2 {
  font-size: 28px; line-height: 1.2; letter-spacing: -0.015em;
  margin: 56px 0 16px;
}
.prose h2 .num {
  font-family: var(--font-mono); font-size: 13px;
  color: var(--accent); margin-right: 12px;
  font-weight: 500; letter-spacing: 0.06em;
}
.prose h3 {
  font-size: 18px; margin: 32px 0 10px;
}
.prose p {
  color: var(--ink-muted); font-size: 16.5px;
  margin-bottom: 14px; line-height: 1.62;
}
.prose p strong { color: var(--ink); font-weight: 500; }
.prose ul, .prose ol {
  color: var(--ink-muted); font-size: 16px;
  line-height: 1.6; padding-left: 22px;
  margin: 0 0 18px;
}
.prose li { margin-bottom: 8px; }
.prose li::marker { color: var(--accent); }
.prose code {
  font-family: var(--font-mono); font-size: 13px;
  background: var(--bg-elev); border: 1px solid var(--border);
  padding: 1px 6px; border-radius: 5px; color: var(--ink);
}
.prose a:not(.btn) {
  color: var(--accent);
  border-bottom: 1px solid var(--accent-soft);
  transition: border-color 120ms ease;
}
.prose a:not(.btn):hover { border-bottom-color: var(--accent); }
.prose .callout {
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-card);
  padding: 22px 26px;
  margin: 8px 0 36px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}
.prose .callout strong { color: var(--accent); font-weight: 500; }
.prose .meta {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-faint); letter-spacing: 0.08em;
  text-transform: uppercase; margin-top: 48px;
  padding-top: 24px; border-top: 1px solid var(--border);
}
.prose .meta strong { color: var(--ink); font-weight: 500; }
.prose .toc {
  margin: 4px 0 48px;
  padding: 18px 22px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
}
.prose .toc-title {
  font-family: var(--font-mono); font-size: 10px;
  color: var(--accent); letter-spacing: 0.12em;
  text-transform: uppercase; margin-bottom: 10px;
}
.prose .toc ol {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 6px 16px;
}
.prose .toc ol li { margin: 0; font-size: 14px; }
.prose .toc a {
  color: var(--ink-muted); font-family: var(--font-mono); font-size: 12px;
  border-bottom: none;
}
.prose .toc a:hover { color: var(--ink); }
.prose .toc .num { color: var(--ink-ghost); margin-right: 8px; }
@media (max-width: 700px) {
  .prose .toc ol { grid-template-columns: 1fr; }
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
  color: var(--ink-faint);
  font-size: 13px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-links {
  display: flex;
  gap: 22px;
}
.footer-links a:hover { color: var(--ink); }