:root {
  --bg: #0f1115;
  --card: #1a1d24;
  --primary: #3b82f6;
  --accent: #8b5cf6;
  --text: #ffffff;
  --text-sub: #9ca3af;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 40px;
}

.logo {
  font-weight: 900;
  font-size: 1.2rem;
  background: linear-gradient(to right, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.status-badge {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-family: monospace;
}

.btn-small {
  padding: 8px 16px;
  border-radius: 8px;
  border: none;
  font-weight: bold;
  font-size: 0.85rem;
  cursor: pointer;
}
.connect { background: white; color: black; }
.logout { background: rgba(255,255,255,0.1); color: #ff4d4d; }

/* Hero */
.hero-section {
  text-align: center;
  margin-bottom: 40px;
}
.hero-section h1 { font-size: 2.5rem; margin-bottom: 10px; }
.hero-section p { color: var(--text-sub); }

/* Grid Layout */
.nft-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.nft-card {
  background: var(--card);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.05);
  transition: transform 0.2s;
}
.nft-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
}

.nft-img-wrapper {
  position: relative;
  height: 200px;
}
.nft-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.badge-id {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0,0,0,0.7);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: bold;
}

.nft-info {
  padding: 15px;
}
.nft-title {
  font-weight: bold;
  margin-bottom: 5px;
  font-size: 0.95rem;
}
.nft-price {
  color: var(--text-sub);
  font-size: 0.85rem;
  margin-bottom: 15px;
}

.btn-buy {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: none;
  background: var(--primary);
  color: white;
  font-weight: bold;
  cursor: pointer;
}
.btn-buy:hover { background: #2563eb; }
.btn-buy:disabled { background: #333; color: #666; cursor: not-allowed; }