/* Reset and base */

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #121212;
  background: #fafafa;
  line-height: 1.6;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Header */

.header {
  background: #004D40;
  padding: 15px 10%;
  position: sticky;
  top: 0;
  z-index: 1000;
  color: white;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: bold;
  font-size: 1.5rem;
  color: white;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 25px;
}

.nav-links li a {
  font-weight: 600;
  padding: 8px 12px;
  transition: background 0.3s ease;
  border-radius: 4px;
}

.nav-links li a:hover {
  background: #00695C;
  color: white;
}

.btn-primary {
  background: #00796B;
  color: white;
  padding: 10px 20px;
  border-radius: 30px;
  font-weight: 600;
  transition: background 0.3s ease;
  cursor: pointer;
  border: none;
  text-align: center;
  display: inline-block;
}

.btn-primary:hover {
  background: #004D40;
}

.btn-secondary {
  color: #00796B;
  border: 2px solid #00796B;
  padding: 8px 18px;
  border-radius: 30px;
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  display: inline-block;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.btn-secondary:hover {
  background: #00796B;
  color: white;
}

/* Hero */

.hero {
  display: flex;
  flex-wrap: wrap;
  gap: 50px;
  padding: 60px 10%;
  background: #e0f2f1;
  align-items: center;
  justify-content: center;
}

.hero-content {
  flex: 1 1 300px;
  max-width: 500px;
}

.hero-content h1 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.hero-content p {
  font-size: 1.1rem;
  margin-bottom: 25px;
  color: #004D40;
}

.hero-buttons a {
  margin-right: 15px;
}

.hero-image {
  flex: 1 1 300px;
  max-width: 600px;
  text-align: center;
}

/* Features */

.features {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding: 50px 10%;
  justify-content: center;
  text-align: center;
}

.feature-item {
  flex: 1 1 250px;
  max-width: 300px;
}

.feature-item img {
  margin-bottom: 15px;
}

.feature-item h3 {
  margin-bottom: 10px;
  color: #00796B;
}

/* Buy & sell section */

.buy-sell {
  background: white;
  padding: 60px 10%;
  text-align: center;
}

.buy-sell h2 {
  margin-bottom: 10px;
  font-size: 2rem;
}

.buy-sell p {
  margin-bottom: 30px;
  color: #555;
}

.trade-image img {
  border-radius: 10px;
  box-shadow: 0 0 12px rgba(0,0,0,0.1);
  max-width: 100%;
}

/* Protection Section */

.protection {
  background: #f1f8f7;
  padding: 50px 10%;
  text-align: center;
}

.protection h2 {
  margin-bottom: 30px;
  color: #004D40;
}

.protection-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 20px 40px;
  justify-content: center;
  font-weight: 600;
  color: #00796B;
}

.protection-list li {
  flex: 1 1 180px;
  background: white;
  padding: 15px 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

/* Wallets Section */

.wallets {
  padding: 60px 10%;
  text-align: center;
}

.wallets h2 {
  margin-bottom: 40px;
  font-size: 2rem;
}

.wallet-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: center;
}

.wallet-card {
  background: white;
  flex: 1 1 250px;
  max-width: 280px;
  padding: 20px;
  border-radius: 14px;
  box-shadow: 0 4px 12px rgb(0 0 0 / 0.08);
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.wallet-card img {
  margin-bottom: 20px;
  border-radius: 8px;
}

.wallet-card h3 {
  margin-bottom: 8px;
}

.wallet-card p {
  flex-grow: 1;
  margin-bottom: 15px;
  color: #555;
}

.wallet-price {
  font-weight: 700;
  margin-bottom: 15px;
  font-size: 1.2rem;
  color: #00796B;
}

/* FAQ Section */

.faq {
  background: #e0f2f1;
  padding: 60px 10%;
  max-width: 900px;
  margin: 0 auto 60px auto;
}

.faq h2 {
  margin-bottom: 35px;
  text-align: center;
}

.faq-item {
  background: white;
  margin-bottom: 15px;
  border-radius: 8px;
  box-shadow: 0 0 10px -3px rgb(0 0 0 / 0.1);
}

.faq-question {
  width: 100%;
  background: #00796B;
  color: white;
  padding: 15px 25px;
  font-weight: 600;
  border: none;
  text-align: left;
  cursor: pointer;
  border-radius: 8px;
  font-size: 1rem;
}

.faq-answer {
  padding: 15px 25px;
  display: none;
  color: #222;
  line-height: 1.4;
}

/* Footer */

.footer {
  background: #004D40;
  color: white;
  padding: 25px 10%;
  text-align: center;
}

.footer-content p {
  margin-bottom: 12px;
}

.social-links {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.social-links li a {
  color: white;
  font-weight: 600;
  transition: opacity 0.3s ease;
}

.social-links li a:hover {
  opacity: 0.7;
}

/* Responsive */

@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    padding: 40px 5%;
  }

  .features {
    flex-direction: column;
    padding: 40px 5%;
  }

  .wallet-cards {
    flex-direction: column;
    padding: 0 5%;
  }

  .nav-links {
    display: none;
  }
}