/* rx7db — dark automotive theme. No framework, no CDN. */

:root {
  --bg: #0a0a0b;
  --bg-raised: #131316;
  --bg-card: #18181c;
  --border: #2a2a30;
  --text: #e8e8ea;
  --text-dim: #9a9aa2;
  --text-faint: #6a6a72;
  --accent: #e0342a;
  --accent-dim: #8f231d;
  --accent-glow: rgba(224, 52, 42, 0.25);
  --radius: 10px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

code, pre {
  font-family: var(--font-mono);
}

pre {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-size: 0.9rem;
}

code {
  background: var(--bg-raised);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

pre code {
  background: none;
  padding: 0;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Nav --------------------------------------------------------------- */

.site-nav {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(10, 10, 11, 0.9);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
}

.brand:hover {
  text-decoration: none;
  color: var(--accent);
}

.brand-logo {
  position: relative;
  display: inline-block;
  height: 52px;
  width: 87px;
}

.brand-logo-img {
  position: absolute;
  inset: 0;
  height: 52px;
  width: 87px;
  border-radius: 0;
  transition: opacity 0.1s ease;
}

.brand-logo-pressed {
  opacity: 0;
}

.brand:hover .brand-logo-unpressed {
  opacity: 0;
}

.brand:hover .brand-logo-pressed {
  opacity: 1;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-dim);
  font-size: 0.95rem;
}

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

.nav-cta {
  border: 1px solid var(--accent-dim);
  border-radius: 6px;
  padding: 0.4rem 0.9rem !important;
  color: var(--text) !important;
}

.nav-cta:hover {
  background: var(--accent-glow);
}

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

.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(2rem, 6vw, 4rem);
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.hero .accent {
  color: var(--accent);
}

.hero p.lede {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
}

.btn-primary {
  background: var(--accent);
  color: #fff !important;
  text-decoration: none !important;
}

.btn-primary:hover {
  background: #f0453a;
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text) !important;
  text-decoration: none !important;
}

.btn-secondary:hover {
  border-color: var(--text-faint);
}

/* --- Sections ------------------------------------------------------------ */

section {
  padding: clamp(2rem, 5vw, 3.5rem) 0;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
  text-align: center;
}

.section-sub {
  color: var(--text-dim);
  text-align: center;
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

/* --- How it works steps --------------------------------------------------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 760px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--accent-glow);
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.step h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.step p {
  color: var(--text-dim);
  margin: 0;
  font-size: 0.95rem;
}

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

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.tool-card .tool-name {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 0.5rem;
}

.tool-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* --- Mock answer panel ------------------------------------------------------ */

.answer-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
  align-items: center;
}

@media (max-width: 760px) {
  .answer-panel {
    grid-template-columns: 1fr;
  }
}

.answer-panel .answer-text p {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.answer-panel .answer-text .q {
  color: var(--text);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.answer-panel img {
  border: 1px solid var(--border);
}

/* --- Footer ----------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  color: var(--text-faint);
  font-size: 0.9rem;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer a {
  color: var(--text-dim);
}

/* --- Docs page --------------------------------------------------------------- */

.docs-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  padding: 2.5rem 0 4rem;
  align-items: start;
}

@media (max-width: 860px) {
  .docs-layout {
    grid-template-columns: 1fr;
  }
  .docs-toc {
    position: static !important;
  }
}

.docs-toc {
  position: sticky;
  top: 84px;
  font-size: 0.9rem;
}

.docs-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.docs-toc li {
  margin-bottom: 0.5rem;
}

.docs-toc a {
  color: var(--text-dim);
}

.docs-toc a:hover {
  color: var(--text);
  text-decoration: none;
}

.docs-content h1 {
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  margin-top: 0;
}

.docs-content h2 {
  font-size: 1.35rem;
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.docs-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

.docs-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 1rem 0;
}

.docs-content th, .docs-content td {
  text-align: left;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.docs-content th {
  color: var(--text-dim);
  font-weight: 600;
}

.docs-content .callout {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  padding: 0.9rem 1.1rem;
  margin: 1.25rem 0;
  font-size: 0.92rem;
  color: var(--text-dim);
}