:root {
  --bg-top: #0a0a17;
  --bg-bottom: #170529;
  --neon-pink: #ff388c;
  --neon-purple: #8c40ff;
  --neon-cyan: #33e6ff;
  --text: #f5f4fb;
  --text-dim: rgba(245, 244, 251, 0.7);
  --text-dimmer: rgba(245, 244, 251, 0.5);
  --card-stroke: rgba(255, 255, 255, 0.12);
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text);
  background: linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
  overflow-x: hidden;
  position: relative;
}

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

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}

p {
  line-height: 1.6;
  color: var(--text-dim);
}

/* Ambient background glows, matching the app's design system */
.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.16;
  z-index: -1;
  pointer-events: none;
  animation: drift 14s ease-in-out infinite alternate;
}

.glow-purple {
  width: 40vw;
  height: 40vw;
  background: var(--neon-purple);
  top: -10%;
  left: -12%;
}

.glow-pink {
  width: 32vw;
  height: 32vw;
  background: var(--neon-pink);
  top: 30%;
  right: -10%;
  animation-delay: 2s;
}

.glow-cyan {
  width: 28vw;
  height: 28vw;
  background: var(--neon-cyan);
  bottom: -12%;
  left: 10%;
  animation-delay: 4s;
}

@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(4%, 6%) scale(1.08); }
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(10, 10, 23, 0.55);
  border-bottom: 1px solid var(--card-stroke);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
}

.brand-mark {
  background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple), var(--neon-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 22px;
}

.nav-links {
  display: flex;
  gap: 28px;
  font-size: 15px;
  color: var(--text-dim);
}

.nav-links a:hover {
  color: var(--text);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple), var(--neon-cyan));
  color: #0a0a17;
  box-shadow: 0 8px 30px rgba(140, 64, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(140, 64, 255, 0.5);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--card-stroke);
  color: var(--text);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.14);
}

.btn-small {
  padding: 9px 18px;
  font-size: 14px;
}

.btn-large {
  padding: 16px 32px;
  font-size: 17px;
}

/* Hero */
.hero {
  max-width: 780px;
  margin: 0 auto;
  padding: 110px 24px 60px;
  text-align: center;
}

.eyebrow {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--text-dimmer);
  margin: 0 0 18px;
}

.hero h1 {
  font-size: clamp(40px, 7vw, 68px);
  line-height: 1.05;
  background: linear-gradient(135deg, #ffffff, var(--neon-pink) 45%, var(--neon-purple) 75%, var(--neon-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: 18px;
  max-width: 560px;
  margin: 22px auto 0;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 36px;
  flex-wrap: wrap;
}

/* Features */
.features {
  max-width: 1100px;
  margin: 100px auto 0;
  padding: 0 24px;
  text-align: center;
}

.features h2, .how h2, .cta h2 {
  font-size: clamp(28px, 4vw, 38px);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
  margin-top: 48px;
  text-align: left;
}

.card {
  padding: 28px 24px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-stroke);
  backdrop-filter: blur(12px);
  transition: transform 0.2s ease, background 0.2s ease, opacity 0.6s ease;
}

.card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.08);
}

.card-icon {
  font-size: 28px;
  margin-bottom: 14px;
}

.card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.card p {
  font-size: 15px;
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* How it works */
.how {
  max-width: 1100px;
  margin: 120px auto 0;
  padding: 0 24px;
  text-align: center;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 48px;
  text-align: left;
}

.step {
  padding: 28px 24px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-stroke);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 700;
  background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple), var(--neon-cyan));
  color: #0a0a17;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.step p {
  font-size: 15px;
  margin: 0;
}

/* CTA */
.cta {
  max-width: 640px;
  margin: 130px auto 0;
  padding: 0 24px 130px;
  text-align: center;
}

.cta p {
  margin-top: 14px;
  font-size: 16px;
}

.cta .btn {
  margin-top: 32px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--card-stroke);
  padding: 28px 24px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: var(--text-dimmer);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a:hover {
  color: var(--text);
}

/* Policy page */
.policy {
  max-width: 720px;
  margin: 0 auto;
  padding: 100px 24px 100px;
}

.policy h1 {
  font-size: clamp(32px, 5vw, 44px);
  margin-bottom: 8px;
}

.policy .updated {
  color: var(--text-dimmer);
  font-size: 14px;
  margin-bottom: 40px;
}

.policy h2 {
  font-size: 20px;
  margin-top: 40px;
  margin-bottom: 12px;
}

.policy p, .policy li {
  color: var(--text-dim);
  font-size: 16px;
}

.policy ul {
  padding-left: 20px;
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }
}