/*
 * Revres marketing site palette - Pulse preset.
 * Mirrors `pulseDarkColors` + `pulseAtmosphereLayers` from
 * arteractive-ui/packages/ui/src/theme/presets/pulse.ts so the
 * landing matches the app's everyday default theme.
 *
 * Cobalt accent + cyan secondary + lavender highlight over deep navy.
 */

:root {
  --bg: #080c1a;
  --bg-card: rgba(17, 22, 42, 0.82);
  --bg-card-solid: #11162a;
  --bg-cta: linear-gradient(110deg, #5b8def 0%, #4cc9f0 50%, #b8a3ff 100%);
  --bg-cta-hover: linear-gradient(110deg, #7ba5ff 0%, #67e8f9 50%, #d5c5ff 100%);
  --text: #f0f4ff;
  --text-secondary: #b0bdda;
  --text-muted: #8a96b3;
  --text-subtle: #6c7898;
  --accent: #5b8def;
  --accent-hover: #7ba5ff;
  --accent-secondary: #4cc9f0;
  --accent-highlight: #b8a3ff;
  --rule: rgba(91, 141, 239, 0.24);
  --rule-subtle: rgba(76, 201, 240, 0.18);
  --eyebrow: #7ba5ff;
  --selection: rgba(91, 141, 239, 0.45);
  --max-width: 1100px;
  --legal-max-width: 720px;

  /*
   * Ad-slot display gate. The .ad-slot wrapper in index.html stays in
   * the markup so the reserved spot is permanent, but it renders
   * invisibly until ads are actually wired (no "Ad slot reserved"
   * placeholder card visible to real visitors). To turn ads on, swap
   * this to `block` -- the AdSense / partner-direct snippet inside
   * .ad-slot then renders normally.
   */
  --ads-display: none;
}

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

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

body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--selection);
  color: var(--text);
}

/*
 * Cosmic-dust backdrop, Pulse edition: cobalt + cyan + lavender layers
 * matching pulseAtmosphereLayers from the shared library.
 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(
      circle at -8% 6%,
      rgba(91, 141, 239, 0.22),
      transparent 55%
    ),
    radial-gradient(
      circle at 60% -4%,
      rgba(76, 201, 240, 0.16),
      transparent 55%
    ),
    radial-gradient(
      circle at 72% 60%,
      rgba(184, 163, 255, 0.14),
      transparent 55%
    ),
    radial-gradient(
      circle at -4% 78%,
      rgba(91, 141, 239, 0.1),
      transparent 55%
    );
  z-index: 0;
}

a {
  color: var(--accent-hover);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--rule);
  transition:
    color 120ms cubic-bezier(0.25, 0.1, 0.25, 1),
    text-decoration-color 120ms cubic-bezier(0.25, 0.1, 0.25, 1);
}

a:hover {
  color: var(--text);
  text-decoration-color: var(--accent-hover);
}

.site-header,
.site-footer {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 32px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.site-header {
  border-bottom: 1px solid var(--rule);
}

.site-footer {
  border-top: 1px solid var(--rule);
  margin-top: 96px;
  font-size: 14px;
  color: var(--text-muted);
  display: block;
}

.site-footer .footer-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer .attribution {
  color: var(--text-subtle);
  font-size: 13px;
  margin-top: 4px;
}

.site-header .brand {
  font-weight: 600;
  font-size: 18px;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.04em;
}

.site-header nav,
.site-footer nav {
  display: flex;
  gap: 24px;
}

.site-header nav a,
.site-footer nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.02em;
}

.site-header nav a:hover,
.site-footer nav a:hover,
.site-header nav a[aria-current="page"],
.site-footer nav a[aria-current="page"] {
  color: var(--text);
}

.page {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 32px 0;
}

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

.hero {
  padding: 64px 0 88px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 56px;
}

.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--eyebrow);
  margin: 0 0 28px;
}

.hero h1 {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.035em;
  color: var(--text);
  margin: 0 0 32px;
  text-wrap: balance;
}

.hero h1 span {
  display: block;
}

.hero h1 .gradient-line {
  background: linear-gradient(
    110deg,
    #7ba5ff 0%,
    #4cc9f0 45%,
    #b8a3ff 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero .tagline {
  font-size: 20px;
  line-height: 1.55;
  color: rgba(240, 244, 255, 0.78);
  margin: 0 0 32px;
  max-width: 620px;
  text-wrap: pretty;
}

/* ---- CTA ----------------------------------------------------------------- */

.cta-row {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin: 0;
}

.cta {
  display: inline-block;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.01em;
  color: #080c1a;
  background: var(--bg-cta);
  text-decoration: none;
  transition: background 160ms cubic-bezier(0.25, 0.1, 0.25, 1);
}

.cta:hover {
  background: var(--bg-cta-hover);
  color: #080c1a;
  text-decoration: none;
}

.cta-secondary {
  font-size: 15px;
  color: var(--text-muted);
}

.cta-secondary a {
  color: var(--text-secondary);
}

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

section + section {
  margin-top: 56px;
}

h2 {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0 0 16px;
}

h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 8px;
}

p,
address {
  margin: 0 0 16px;
  color: var(--text-secondary);
}

address {
  font-style: normal;
  color: var(--text-muted);
}

ul {
  color: var(--text-secondary);
  padding-left: 22px;
}

li {
  margin-bottom: 8px;
}

li::marker {
  color: var(--accent);
}

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

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.feature {
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 20px;
  background: linear-gradient(
    90deg,
    rgba(91, 141, 239, 0.06) 0%,
    transparent 60%
  );
  border-radius: 0 8px 8px 0;
}

.feature h3 {
  margin-top: 0;
  color: var(--accent-hover);
}

.feature p {
  margin-bottom: 0;
}

/* ---- Ad slot ------------------------------------------------------------- */

/*
 * Single tasteful ad slot. Wrapper holds disclosure label + ad content;
 * the actual ad payload is injected by whatever network we pick (kept
 * privacy-respecting per the trust-first positioning -- no cross-site
 * tracking pixels here).
 */
.ad-slot {
  display: var(--ads-display);
  margin: 64px 0 0;
  padding: 24px;
  border: 1px solid var(--rule-subtle);
  border-radius: 12px;
  background: var(--bg-card);
  text-align: center;
}

.ad-slot .ad-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin: 0 0 12px;
}

.ad-slot .ad-placeholder {
  font-size: 14px;
  color: var(--text-muted);
  font-style: italic;
}

/* ---- Utility pages -------------------------------------------------------- */

.not-found {
  min-height: 48vh;
  padding: 80px 0;
  max-width: 640px;
}

.not-found h1 {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--text);
  margin: 0 0 24px;
}

/* ---- Legal pages --------------------------------------------------------- */

.legal {
  max-width: var(--legal-max-width);
  margin: 0 auto;
}

.legal h1 {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text);
  margin: 32px 0 8px;
}

.legal .effective {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 8px;
}

.legal .disclaimer {
  font-size: 13px;
  color: var(--text-subtle);
  border: 1px solid var(--rule-subtle);
  border-radius: 12px;
  padding: 14px 18px;
  margin: 24px 0 40px;
  background: var(--bg-card);
}

.legal h2 {
  font-size: 20px;
  margin-top: 40px;
  color: var(--text);
}

.legal p,
.legal li {
  color: var(--text-secondary);
}

.legal .emphasis {
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--text-muted);
}

/* ---- Responsive ---------------------------------------------------------- */

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }
  .hero {
    padding: 40px 0 64px;
  }
  .hero h1 {
    font-size: clamp(40px, 12vw, 64px);
  }
  .hero .tagline {
    font-size: 18px;
  }
  .legal h1 {
    font-size: 30px;
  }
  .site-header,
  .site-footer,
  .page {
    padding-left: 22px;
    padding-right: 22px;
  }
  .features {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  a,
  .cta {
    transition: none;
  }
}