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

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: linear-gradient(180deg, #0d1b2a 0%, #1b263b 50%, #2a3d66 100%);
  color: #ffffff;
  line-height: 1.6;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background: rgba(13, 27, 42, 0.95);
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: #00d4ff;
}

nav ul {
  list-style: none;
  display: flex;
}

nav ul li {
  margin-left: 25px;
}

nav ul li a {
  color: #ffffff;
  text-decoration: none;
  transition: color 0.3s ease;
}

nav ul li a:hover {
  color: #00d4ff;
}

/* Hero Section */
.hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 100px 40px;
  background: linear-gradient(135deg, #1b263b, #0d1b2a);
}

.hero-text h1 {
  font-size: 48px;
  color: #ffffff;
}

.hero-text p {
  color: #a8dadc;
  margin: 20px 0;
}

.hero-image img {
  max-width: 450px;
  height: auto;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  color: #fff;
  transition: background 0.3s ease, transform 0.2s ease;
}

.btn.primary {
  background: linear-gradient(90deg, #457b9d, #00d4ff);
}

.btn.primary:hover {
  background: linear-gradient(90deg, #00d4ff, #457b9d);
  transform: scale(1.05);
}

.btn.secondary {
  background: #2a3d66;
}

.btn.secondary:hover {
  background: #1b263b;
  transform: scale(1.05);
}

/* Featured Logos */
.featured {
  text-align: center;
  padding: 60px 40px;
}

.featured h2 {
  color: #f1faee;
}

.featured img {
  max-width: 600px;
  width: 100%;
  margin-top: 20px;
}

/* Analytics Section */
#analytics {
  background: rgba(27, 38, 59, 0.8);
  border-radius: 12px;
  margin: 40px auto;
  max-width: 1000px;
  padding: 60px;
  display: flex;
  align-items: center;
  gap: 40px;
}

#analytics img {
  max-width: 400px;
  height: auto;
}

#analytics h2 {
  color: #f1faee;
}

#analytics p {
  color: #a8dadc;
}

/* App Section */
#app {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 80px 40px;
}

#app img {
  max-width: 400px;
  height: auto;
}

#app h2 {
  color: #f1faee;
}

#app p {
  color: #a8dadc;
}

/* Testimonials */
#testimonials {
  background: #0d1b2a;
  padding: 80px 40px;
}

#testimonials h2 {
  text-align: center;
  margin-bottom: 40px;
  color: #f1faee;
}

.testimonial-container {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}

.testimonial {
  background: rgba(27, 38, 59, 0.9);
  padding: 30px;
  border-radius: 12px;
  max-width: 280px;
  color: #f1faee;
  text-align: center;
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.testimonial img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin-bottom: 15px;
}

/* Call to Action */
.cta {
  background: linear-gradient(90deg, #00d4ff, #457b9d);
  text-align: center;
  padding: 100px 20px;
  color: #fff;
}

.cta h2 {
  margin-bottom: 15px;
}

/* Footer */
footer {
  background: #1b263b;
  padding: 60px 40px;
}

.footer-links {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
}

.footer-links h3 {
  color: #00d4ff;
}

.footer-links ul {
  list-style: none;
}

.footer-links ul li {
  margin-bottom: 8px;
  color: #f1faee;
}

.footer-links ul li a {
  color: #f1faee;
  text-decoration: none;
}

.footer-links ul li a:hover {
  color: #00d4ff;
}

footer form input {
  padding: 10px;
  border: none;
  border-radius: 4px;
}

footer form button {
  background: linear-gradient(90deg, #457b9d, #00d4ff);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
}

footer form button:hover {
  background: linear-gradient(90deg, #00d4ff, #457b9d);
}

/* Marketplace Grid */
.nft-grid {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.nft-card {
  background: rgba(27, 38, 59, 0.9);
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
  width: 250px;
}

.nft-card img {
  max-width: 100%;
  border-radius: 8px;
  margin-bottom: 10px;
}

/* Pricing Grid */
.pricing-grid {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.pricing-card {
  background: rgba(27, 38, 59, 0.9);
  padding: 30px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
  width: 250px;
}

.pricing-card h2 {
  margin-bottom: 10px;
  color: #00d4ff;
}

.pricing-card ul {
  list-style: none;
  margin: 20px 0;
}

.pricing-card ul li {
  margin-bottom: 8px;
  color: #f1faee;
}

/* Sell Form */
.sell form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  max-width: 400px;
  margin: auto;
}

.sell label {
  font-weight: bold;
  color: #f1faee;
}

.sell input, .sell button {
  padding: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

.sell button {
  background: linear-gradient(90deg, #457b9d, #00d4ff);
  color: #fff;
  border: none;
  cursor: pointer;
}

.sell button:hover {
  background: linear-gradient(90deg, #00d4ff, #457b9d);
}

/* Responsive Design */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    text-align: center;
  }

  nav ul {
    flex-direction: column;
    margin-top: 10px;
  }

  nav ul li {
    margin: 10px 0;
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding: 40px 20px;
  }

  .hero-image img {
    max-width: 100%;
    margin-top: 20px;
  }

  #analytics {
    flex-direction: column;
    text-align: center;
    padding: 30px 20px;
  }

  #analytics img {
    max-width: 100%;
    margin-bottom: 20px;