/* Modern, clean, responsive CSS for AgentVerse landing page */
body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f5f7fa;
  color: #222;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  padding: 1.2em 2em;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-logo {
  font-size: 1.7em;
  font-weight: bold;
  color: #3182ce;
  letter-spacing: 1px;
}
.nav-links {
  list-style: none;
  display: flex;
  gap: 2em;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: #1a202c;
  text-decoration: none;
  font-weight: 500;
  font-size: 1.1em;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: #3182ce;
}
.hero {
  background: linear-gradient(120deg, #4f8cff 60%, #00c6ae 100%);
  color: white;
  padding: 5rem 1rem 4rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 350px;
  text-align: center;
}
.hero-content {
  max-width: 600px;
  margin: 0 auto;
}
.hero h1 {
  font-size: 2.5em;
  margin-bottom: 0.5em;
  font-weight: 700;
}
.hero p {
  font-size: 1.3em;
  margin-bottom: 1.5em;
  font-weight: 400;
}
.cta-button {
  background: #3182ce;
  color: white;
  padding: 0.75rem 2rem;
  text-decoration: none;
  border-radius: 5px;
  font-size: 1.1em;
  font-weight: 600;
  border: none;
  transition: background 0.2s;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(49,130,206,0.08);
}
.cta-button:hover {
  background: #00c6ae;
}
main {
  flex: 1;
}
.about, .features, .contact {
  padding: 3rem 1rem 2rem 1rem;
  max-width: 900px;
  margin: 0 auto;
}
.about h2, .features h2, .contact h2 {
  font-size: 2em;
  margin-bottom: 0.7em;
  color: #3182ce;
}
.features-list {
  display: flex;
  flex-wrap: wrap;
  gap: 2em;
  justify-content: center;
  margin-top: 2em;
}
.feature-item {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.07);
  padding: 2em 1.5em;
  min-width: 220px;
  max-width: 300px;
  flex: 1 1 220px;
  text-align: left;
  transition: transform 0.2s, box-shadow 0.2s;
}
.feature-item:hover {
  transform: translateY(-8px) scale(1.04);
  box-shadow: 0 6px 24px rgba(0,198,174,0.13);
}
.feature-item h3 {
  color: #00c6ae;
  margin-top: 0;
}
.contact-form {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  padding: 2em 2.5em;
  max-width: 420px;
  margin: 2em auto 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1em;
}
.contact-form label {
  font-weight: 500;
  margin-bottom: 0.2em;
  text-align: left;
}
.contact-form input,
.contact-form textarea {
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  padding: 0.7em 1em;
  font-size: 1em;
  font-family: inherit;
  background: #f9f9f9;
  transition: border 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  border: 1.5px solid #4f8cff;
  outline: none;
  background: #fff;
}
.contact-form .cta-button {
  margin-top: 0.5em;
  background: linear-gradient(90deg, #4f8cff 60%, #00c6ae 100%);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.8em 0;
  font-size: 1.1em;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.contact-form .cta-button:hover {
  background: linear-gradient(90deg, #00c6ae 60%, #4f8cff 100%);
}
.form-error {
  color: #e74c3c;
  font-size: 0.95em;
  min-height: 1.2em;
  margin-bottom: -0.5em;
  margin-top: -0.5em;
  display: block;
}
.form-success {
  color: #27ae60;
  font-size: 1.1em;
  margin-top: 1em;
  text-align: center;
}
.contact-alt {
  margin-top: 2em;
  color: #555;
}
footer {
  background: #2d3748;
  color: white;
  padding: 1.2rem 0;
  text-align: center;
  font-size: 1em;
  margin-top: 2em;
}
@media (max-width: 900px) {
  .features-list {
    flex-direction: column;
    align-items: center;
  }
}
@media (max-width: 600px) {
  .navbar {
    flex-direction: column;
    gap: 1em;
    padding: 1em 0.5em;
  }
  .hero {
    padding: 3rem 0.5rem 2rem 0.5rem;
  }
  .about, .features, .contact {
    padding: 2rem 0.5rem 1.5rem 0.5rem;
  }
  .contact-form {
    padding: 1.2em 0.7em;
  }
}