:root {
  --bg: #0b1020;
  --bg-soft: #111935;
  --card: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.1);
  --text: #e6eaf5;
  --muted: #97a0bf;
  --indigo: #6366f1;
  --cyan: #22d3ee;
  --radius: 18px;
  --maxw: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    "Plus Jakarta Sans",
    system-ui,
    -apple-system,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  overflow-x: hidden;
}

/* Background */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.06) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(
    ellipse 80% 60% at 50% 0%,
    #000 40%,
    transparent 100%
  );
}
.bg-glow {
  position: fixed;
  top: -240px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  z-index: -1;
  background:
    radial-gradient(
      circle at 30% 30%,
      rgba(99, 102, 241, 0.45),
      transparent 60%
    ),
    radial-gradient(
      circle at 70% 40%,
      rgba(34, 211, 238, 0.35),
      transparent 60%
    );
  filter: blur(60px);
  opacity: 0.7;
}

/* Nav */
.nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand img {
  display: block;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  transition: color 0.15s;
}
.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: 700;
  font-size: 15px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    transform 0.12s ease,
    box-shadow 0.2s ease,
    background 0.2s;
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: linear-gradient(135deg, var(--indigo), var(--cyan));
  color: #0b1020;
  box-shadow: 0 10px 30px -8px rgba(34, 211, 238, 0.5);
}
.btn-primary:hover {
  box-shadow: 0 14px 36px -8px rgba(34, 211, 238, 0.7);
}
.btn-ghost {
  background: var(--card);
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.25);
}

/* Hero */
.hero {
  max-width: var(--maxw);
  margin: 40px auto 0;
  padding: 40px 24px 80px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}
.pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22d3ee;
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.18);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  50% {
    box-shadow: 0 0 0 7px rgba(34, 211, 238, 0);
  }
}

.hero h1 {
  font-size: clamp(40px, 6vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 18px 0 16px;
  font-weight: 800;
}
.grad {
  background: linear-gradient(120deg, var(--indigo), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede {
  color: var(--muted);
  font-size: 19px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  margin: 30px 0 24px;
  flex-wrap: wrap;
}
.trust {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

/* Demo chat card */
.demo {
  background: linear-gradient(180deg, var(--bg-soft), rgba(17, 25, 53, 0.6));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.8);
  overflow: hidden;
  backdrop-filter: blur(8px);
}
.demo-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}
.demo-head strong {
  display: block;
  font-size: 15px;
}
.demo-head small {
  color: #4ade80;
  font-size: 12px;
  font-weight: 600;
}
.demo-body {
  padding: 18px;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.msg {
  max-width: 86%;
  padding: 11px 15px;
  border-radius: 16px;
  font-size: 14.5px;
  opacity: 0;
  transform: translateY(8px);
  animation: rise 0.4s forwards;
}
@keyframes rise {
  to {
    opacity: 1;
    transform: none;
  }
}
.msg.user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--indigo), #7c83ff);
  color: #fff;
  border-bottom-right-radius: 5px;
}
.msg.bot {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-bottom-left-radius: 5px;
}

/* Mini chart inside bot reply */
.mini {
  margin-top: 10px;
  display: flex;
  align-items: flex-end;
  gap: 7px;
  height: 78px;
}
.mini i {
  width: 22px;
  border-radius: 6px 6px 0 0;
  background: linear-gradient(180deg, var(--cyan), var(--indigo));
  display: block;
  transform-origin: bottom;
  animation: grow 0.6s ease forwards;
  transform: scaleY(0);
}
@keyframes grow {
  to {
    transform: scaleY(1);
  }
}
.mini .num {
  margin-left: auto;
  align-self: center;
  text-align: right;
}
.mini .num b {
  font-size: 22px;
  color: #fff;
}
.mini .num span {
  display: block;
  font-size: 11px;
  color: var(--muted);
}

.typing {
  align-self: flex-start;
  display: inline-flex;
  gap: 5px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: 16px;
  border-bottom-left-radius: 5px;
}
.typing i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--muted);
  animation: blink 1.2s infinite;
}
.typing i:nth-child(2) {
  animation-delay: 0.2s;
}
.typing i:nth-child(3) {
  animation-delay: 0.4s;
}
@keyframes blink {
  0%,
  60%,
  100% {
    opacity: 0.3;
  }
  30% {
    opacity: 1;
  }
}

/* Sections */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 70px 24px;
}
.section-title {
  text-align: center;
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 44px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.step {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}
.step-num {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #0b1020;
  background: linear-gradient(135deg, var(--indigo), var(--cyan));
  margin-bottom: 14px;
}
.step h3 {
  margin: 0 0 8px;
  font-size: 19px;
}
.step p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition:
    transform 0.18s,
    border-color 0.18s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 211, 238, 0.4);
}
.ico {
  font-size: 26px;
  margin-bottom: 12px;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
}

/* CTA */
.cta {
  max-width: var(--maxw);
  margin: 30px auto 80px;
  padding: 0 24px;
}
.cta-inner {
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.18),
    rgba(34, 211, 238, 0.14)
  );
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 56px 28px;
  text-align: center;
}
.cta-inner h2 {
  font-size: clamp(26px, 4vw, 36px);
  margin: 0 0 10px;
  letter-spacing: -0.02em;
}
.cta-inner p {
  color: var(--muted);
  margin: 0 0 26px;
}
.signup {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}
.signup input {
  padding: 13px 18px;
  border-radius: 999px;
  min-width: 280px;
  background: rgba(11, 16, 32, 0.6);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
}
.signup input:focus {
  outline: none;
  border-color: var(--cyan);
}
.form-note {
  min-height: 20px;
  margin: 14px 0 0;
  color: #4ade80;
  font-weight: 600;
  font-size: 14px;
}

/* Footer */
.footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 36px 24px 50px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}
.footer p {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}
.footer img {
  opacity: 0.9;
}

/* Responsive */
@media (max-width: 880px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-bottom: 50px;
  }
  .nav-links a:not(.btn) {
    display: none;
  }
  .steps,
  .grid {
    grid-template-columns: 1fr;
  }
  .demo {
    max-width: 460px;
  }
}