:root {
  --bg: #0f1420;
  --surface: #161d2e;
  --surface-2: #1e2740;
  --border: #2a3450;
  --text: #e6e9f2;
  --text-dim: #8993ad;
  --primary: #4f7cff;
  --primary-hover: #6b90ff;
  --success: #2fbf71;
  --danger: #e5484d;
  --warning: #f5a623;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--primary); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar-brand { font-weight: 600; }
.topbar-nav { display: flex; align-items: center; gap: 12px; }
.dim { color: var(--text-dim); font-size: 0.9em; }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  gap: 20px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 800px) {
  .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.card h2 {
  margin-top: 0;
  font-size: 1.05rem;
}
.card h2 small { color: var(--text-dim); font-weight: 400; }

.stat {
  font-size: 2rem;
  font-weight: 700;
}

form { display: grid; gap: 12px; }
label { display: block; font-size: 0.85rem; color: var(--text-dim); margin-bottom: 4px; }
input, select, textarea {
  width: 100%;
  padding: 9px 11px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
}
textarea { resize: vertical; min-height: 90px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: var(--primary);
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
}
.btn:hover { background: var(--primary-hover); }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-sm { padding: 6px 12px; font-size: 0.82rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--text-dim); font-weight: 500; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.tab {
  padding: 10px 16px;
  cursor: pointer;
  color: var(--text-dim);
  border-bottom: 2px solid transparent;
}
.tab.active { color: var(--text); border-bottom-color: var(--primary); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  display: none;
}
.alert.show { display: block; }
.alert-error { background: rgba(229, 72, 77, 0.15); color: #ff9296; border: 1px solid rgba(229, 72, 77, 0.35); }
.alert-success { background: rgba(47, 191, 113, 0.15); color: #6fe0a3; border: 1px solid rgba(47, 191, 113, 0.35); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-available { background: rgba(47, 191, 113, 0.18); color: #6fe0a3; }
.badge-sold { background: rgba(137, 147, 173, 0.18); color: var(--text-dim); }
.badge-pending { background: rgba(245, 166, 35, 0.18); color: #f5c169; }
.badge-success { background: rgba(47, 191, 113, 0.18); color: #6fe0a3; }
.badge-failed, .badge-expired { background: rgba(229, 72, 77, 0.18); color: #ff9296; }

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.login-card { width: 100%; max-width: 380px; }

.row { display: flex; gap: 10px; align-items: center; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.code-list { display: grid; gap: 6px; margin-top: 8px; }
.code-item {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-family: ui-monospace, monospace;
  font-size: 0.85rem;
  word-break: break-all;
}