* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: #f7f9fc;
  color: #0b1a2b;
  line-height: 1.6;
}

/* CONTAINER */

section {
  padding: 80px 8%;
}

/* NAVBAR */

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 8%;
  background: white;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: #2563eb;
  letter-spacing: 0.5px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 28px;
}

.nav-links a {
  text-decoration: none;
  color: #334155;
  font-weight: 500;
  transition: 0.2s;
}

.nav-links a:hover {
  color: #2563eb;
}

.demo-btn {
  background: #2563eb;
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  transition: 0.2s;
}

.demo-btn:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

/* HERO */

.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  flex-wrap: wrap;
}

.hero-left {
  flex: 1;
  min-width: 280px;
}

.hero h1 {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.2;
}

.hero p {
  margin: 20px 0;
  font-size: 18px;
  color: #475569;
}

.cta-btn {
  background: linear-gradient(90deg, #2563eb, #3b82f6);
  color: white;
  padding: 14px 26px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  transition: 0.25s;
  display: inline-block;
}

.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.hero-right {
  flex: 1;
  display: flex;
  justify-content: center;
}

.hero-right img {
  width: 100%;
  max-width: 520px;
  border-radius: 12px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15);
}

/* PROBLEM */

.problem {
  text-align: center;
}

.section-text {
  max-width: 700px;
  margin: auto;
  margin-top: 20px;
  color: #475569;
}

.problem-cards {
  display: flex;
  gap: 25px;
  margin-top: 50px;
  flex-wrap: wrap;
}

.card {
  flex: 1;
  min-width: 250px;
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  transition: 0.25s;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* SOLUTION */

.solution {
  background: white;
  text-align: center;
}

/* FEATURES */

.features {
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
  margin-top: 40px;
}

.feature-card {
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  transition: 0.25s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 35px rgba(0, 0, 0, 0.1);
}

/* EARLY ACCESS */

.early-access {
  background: #eef3ff;
  text-align: center;
}

form {
  max-width: 420px;
  margin: auto;
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

input,
textarea {
  padding: 14px;
  border-radius: 8px;
  border: 1px solid #cbd5e1;
  font-size: 14px;
}

textarea {
  min-height: 90px;
  resize: none;
}

button {
  padding: 14px;
  background: #22c55e;
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
}

button:hover {
  background: #16a34a;
}

.loader {
  border: 3px solid #f3f3f3;
  border-top: 3px solid white;
  border-radius: 50%;
  width: 16px;
  height: 16px;
  animation: spin 1s linear infinite;
  display: inline-block;
  margin-left: 10px;
}

.hidden {
  display: none;
}

.success {
  margin-top: 20px;
  color: #16a34a;
  font-weight: 500;
}

/* CTA */

.cta {
  text-align: center;
  background: white;
}

.cta h2 {
  font-size: 32px;
  margin-bottom: 20px;
}

/* FOOTER */

footer {
  background: white;
  text-align: center;
  padding: 40px;
  color: #64748b;
}

/* ANIMATION */

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* ---------------- */
/* RESPONSIVE */
/* ---------------- */

@media (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 {
    font-size: 36px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero {
    flex-direction: column;
    text-align: center;
  }

  .problem-cards {
    flex-direction: column;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  section {
    padding: 70px 6%;
  }

  .hero h1 {
    font-size: 32px;
  }
}