:root {
  --brand: #00a814;
  --brand-dark: #007a0f;
  --ink: #222;
  --paper: #ffffff;
  --muted: #666;
}

* {
  box-sizing: border-box;
}

body {
  background-color: var(--paper);
  color: var(--ink);
  font-family: Arial, sans-serif;
  margin: 0;
}

/* Navigation */
.site-nav {
  padding: 1rem 0;
  border-bottom: 1px solid #eee;
}

.site-nav .navbar-brand {
  color: var(--brand-dark) !important;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav-link {
  color: var(--brand) !important;
  font-size: 1.1rem;
  padding: 0.5rem 1rem !important;
  transition: opacity 0.3s ease;
}

.nav-link:hover {
  opacity: 0.7;
}

.nav-link.active {
  font-weight: 700;
  text-decoration: underline;
}

/* Hero (home page) */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1.5rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 1rem;
}

.hero .tagline {
  font-size: 1.25rem;
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 2rem;
}

.hero-actions .btn {
  margin: 0.4rem;
}

/* Page content */
.content {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  line-height: 1.7;
}

.content.content-wide {
  max-width: 1200px;
}

/* Collections grid */
.collection-item {
  margin-bottom: 2rem;
}

.collection-item .card {
  border-radius: 15px;
  height: 100%;
  border: 1px solid #eee;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.collection-item .card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
}

.collection-item .card-img-top {
  border-radius: 15px 15px 0 0;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* Contact */
.social-link {
  color: var(--brand);
  text-decoration: none;
  font-size: 1.2rem;
  margin-right: 1rem;
}

.social-link:hover {
  opacity: 0.7;
}

.wallet-address {
  font-family: monospace;
  font-size: 0.9rem;
  color: var(--muted);
  word-break: break-all;
}

/* Shared footer */
.site-footer {
  text-align: center;
  padding: 2rem 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--brand-dark);
  text-decoration: none;
}

.site-footer a:hover {
  opacity: 0.7;
}