/* TradeHomie marketing site — design system per ~/.claude/design-md/vercel/DESIGN.md.
   Tokens/components follow that system's structure (neutrals, type scale,
   spacing, stacked shadows, pill CTAs, mono eyebrows, polarity-flip dark
   bands, hero mesh gradient as the sole decoration). The mesh gradient's
   actual hues are TradeHomie's own (brand indigo + candlestick green/red +
   the existing amber warning tone), not Vercel's literal cyan/violet/pink
   stops -- that exact combination is Vercel's own brand mark, so reusing
   their structure with our colors is the system, not a clone of it. */

:root {
  --ink: #171717;
  --on-primary: #ffffff;
  --body: #4d4d4d;
  --mute: #888888;
  --hairline: #ebebeb;
  --hairline-strong: #a1a1a1;
  --canvas: #ffffff;
  --canvas-soft: #fafafa;
  --canvas-soft-2: #f5f5f5;
  --link: #0070f3;

  /* TradeHomie's own hero-gradient stops (not Vercel's) */
  --grad-indigo: #6e61e8;
  --grad-green: #26a69a;
  --grad-red: #ef5350;
  --grad-amber: #f0a63b;

  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 40px;
  --space-3xl: 48px;
  --space-4xl: 64px;
  --space-5xl: 96px;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 100px;

  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--canvas-soft);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 24px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

@media (max-width: 600px) {
  .container {
    padding: 0 var(--space-md);
  }
}

/* ---------- nav ---------- */

.nav-bar {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
}

.nav-bar .container {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.28px;
}

.nav-brand img {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: block;
}

.nav-links {
  display: flex;
  gap: var(--space-sm);
}

.nav-link {
  color: var(--body);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: -0.28px;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-pill);
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-link:hover {
  background: var(--canvas-soft);
  color: var(--ink);
}

@media (max-width: 600px) {
  .nav-links {
    display: none;
  }
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 var(--space-lg);
  border-radius: var(--radius-pill);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ink);
  color: var(--on-primary);
}

.btn-secondary {
  background: var(--canvas);
  color: var(--ink);
  border: 1px solid var(--hairline);
}

.btn:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

.btn-sm {
  height: 36px;
  padding: 0 var(--space-md);
  font-size: 14px;
}

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

.hero {
  position: relative;
  background: var(--canvas);
  overflow: hidden;
}

.hero-mesh {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 15%, rgba(110, 97, 232, 0.35), transparent 60%),
    radial-gradient(ellipse 55% 45% at 75% 10%, rgba(38, 166, 154, 0.3), transparent 60%),
    radial-gradient(ellipse 50% 40% at 85% 35%, rgba(239, 83, 80, 0.22), transparent 60%),
    radial-gradient(ellipse 45% 40% at 40% 40%, rgba(240, 166, 59, 0.2), transparent 60%);
  filter: blur(40px);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--space-5xl) 0 var(--space-4xl);
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 16px;
  color: var(--body);
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-pill);
  padding: var(--space-xxs) var(--space-sm);
  margin-bottom: var(--space-lg);
}

h1 {
  font-size: 48px;
  font-weight: 600;
  line-height: 48px;
  letter-spacing: -2.4px;
  margin: 0 0 var(--space-lg);
}

.lead {
  font-size: 18px;
  line-height: 28px;
  color: var(--body);
  max-width: 560px;
  margin: 0 auto var(--space-xl);
}

.cta-row {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 600px) {
  h1 {
    font-size: 32px;
    line-height: 40px;
    letter-spacing: -1.28px;
  }
  .hero-content {
    padding: var(--space-4xl) 0 var(--space-3xl);
  }
}

/* ---------- features ---------- */

.features-section {
  padding: var(--space-4xl) 0;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mute);
  text-align: center;
  margin-bottom: var(--space-xs);
}

h2 {
  font-size: 32px;
  font-weight: 600;
  line-height: 40px;
  letter-spacing: -1.28px;
  text-align: center;
  margin: 0 0 var(--space-2xl);
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

@media (max-width: 600px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: var(--canvas);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.08),
    0px 2px 2px rgba(0, 0, 0, 0.04),
    0px 8px 8px -8px rgba(0, 0, 0, 0.04);
}

.feature-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 var(--space-xs);
}

.feature-desc {
  font-size: 14px;
  line-height: 20px;
  letter-spacing: -0.28px;
  color: var(--body);
  margin: 0;
}

/* ---------- disclaimer (polarity-flipped dark band) ---------- */

.disclaimer-band {
  background: var(--ink);
  color: var(--on-primary);
  padding: var(--space-4xl) 0;
}

.disclaimer-band .container {
  max-width: 640px;
  text-align: center;
}

.disclaimer-band p {
  font-size: 18px;
  line-height: 28px;
  margin: 0;
}

.disclaimer-band strong {
  display: block;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.96px;
  margin-bottom: var(--space-sm);
}

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

footer.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: var(--space-xl) 0;
}

footer.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--mute);
}

footer.site-footer a {
  color: var(--mute);
  text-decoration: none;
}

footer.site-footer a:hover {
  color: var(--ink);
}

footer.site-footer .footer-links {
  display: flex;
  gap: var(--space-md);
}

/* ---------- legal pages (privacy / terms) ---------- */

.legal-content {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-4xl) 0;
}

.legal-content .back-link {
  display: inline-block;
  font-size: 14px;
  color: var(--body);
  text-decoration: none;
  margin-bottom: var(--space-lg);
}

.legal-content .back-link:hover {
  color: var(--ink);
}

.legal-content h1 {
  font-size: 32px;
  letter-spacing: -1.28px;
  text-align: left;
}

.legal-content .updated {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mute);
  margin: 0 0 var(--space-2xl);
}

.legal-content h2 {
  font-size: 20px;
  letter-spacing: -0.6px;
  text-align: left;
  margin: var(--space-2xl) 0 var(--space-sm);
}

.legal-content p,
.legal-content li {
  font-size: 16px;
  line-height: 24px;
  color: var(--body);
}

.legal-content ul {
  padding-left: var(--space-lg);
}

/* ---------- accessibility ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}