:root {
  --navy: #001F3F;
  --royal-blue: #003366;
  --white: #F8FAFC;
  --off-white: #E0E7FF;
  --accent: #007BFF;  /* Royal blue for CTAs */
  --border: rgba(255, 255, 255, 0.15);
  --glass-bg: rgba(255, 255, 255, 0.08);
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, var(--navy) 0%, var(--royal-blue) 100%);
  color: var(--white);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 123, 255, 0.2);
}

/* Hero */
.hero {
  padding: 6rem 1rem 4rem;
  text-align: center;
  background: linear-gradient(to bottom, rgba(0, 31, 63, 0.3), transparent);
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

h1 {
  font-size: 3.5rem;
  margin: 0;
  text-shadow: 0 2px 4px rgba(0,0,0,0.4);
}

.tagline {
  font-size: 1.4rem;
  color: var(--off-white);
  margin: 1rem 0 2rem;
}

.cta {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  padding: 1rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.4);
  transition: transform 0.3s;
}

.cta:hover {
  transform: translateY(-2px);
}

/* Nav */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
}

.nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.nav a {
  color: var(--off-white);
  text-decoration: none;
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--white);
}

/* Sections */
h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.card {
  padding: 2rem;
  text-align: center;
}

.card h3 {
  font-size: 1.8rem;
  margin: 0 0 1rem;
}

/* Mint Section */
.mint-card {
  max-width: 600px;
  margin: 0 auto;
  padding: 2rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

input {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  color: var(--white);
}

button.cta {
  cursor: pointer;
  border: none;
}

#mint-result {
  margin-top: 1rem;
  color: var(--off-white);
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .hero { padding: 4rem 1rem 2rem; }
  h1 { font-size: 2.5rem; }
  .nav { flex-direction: column; gap: 1rem; }
  .nav ul { flex-direction: column; gap: 1rem; }
  .card-grid { grid-template-columns: 1fr; }
  form input, button { width: 100%; }
}