:root {
  --bg: #0f1220;
  --card: #171b2e;
  --accent: #d4a017;
  --text: #f1f1f4;
  --muted: #9a9db0;
  --success: #2e8b57;
  --danger: #c0392b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  text-align: center;
  padding: 60px 20px 30px;
}

header .kicker {
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: bold;
  font-size: 13px;
}

header h1 {
  font-size: 42px;
  margin: 10px 0;
}

header p {
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

.products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin: 40px 0;
}

.product-card {
  background: var(--card);
  border: 2px solid transparent;
  border-radius: 12px;
  padding: 24px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.product-card:hover { border-color: rgba(212, 160, 23, 0.4); }
.product-card.selected { border-color: var(--accent); }

.product-card h3 { margin: 0 0 8px; font-size: 18px; }
.product-card p { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
.product-card .price { font-size: 22px; font-weight: bold; color: var(--accent); }
.product-card .checkbox { float: right; }

.bundle-banner {
  background: linear-gradient(135deg, #3b1f4d, #8e44ad);
  border-radius: 12px;
  padding: 20px 24px;
  margin-top: 10px;
  display: none;
}
.bundle-banner.show { display: block; }

.summary {
  background: var(--card);
  border-radius: 12px;
  padding: 28px;
  margin-top: 30px;
}

.summary .total {
  font-size: 28px;
  font-weight: bold;
  color: var(--accent);
  margin: 10px 0 20px;
}

.tabs { display: flex; gap: 10px; margin-bottom: 20px; }
.tab-btn {
  flex: 1;
  padding: 12px;
  border-radius: 8px;
  border: 2px solid #2a2f45;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-weight: bold;
}
.tab-btn.active { border-color: var(--accent); background: rgba(212,160,23,0.1); }

.pane { display: none; }
.pane.active { display: block; }

input[type="email"], input[type="text"] {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #2a2f45;
  background: #0f1220;
  color: var(--text);
  margin-bottom: 14px;
  font-size: 15px;
}

button.buy {
  width: 100%;
  padding: 16px;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: #1a1a1a;
  font-weight: bold;
  font-size: 16px;
  cursor: pointer;
}
button.buy:disabled { opacity: 0.5; cursor: not-allowed; }

.wallet-box {
  background: #0f1220;
  border: 1px dashed var(--accent);
  border-radius: 8px;
  padding: 14px;
  font-family: monospace;
  word-break: break-all;
  margin-bottom: 14px;
}

.status-msg {
  margin-top: 14px;
  padding: 12px;
  border-radius: 8px;
  display: none;
}
.status-msg.show { display: block; }
.status-msg.ok { background: rgba(46,139,87,0.2); color: #7fd8a4; }
.status-msg.err { background: rgba(192,57,43,0.2); color: #f0a19a; }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  padding: 30px;
}