body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  background-color: #f5f5f5;
  color: #222;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  background: #fff;
  padding: 24px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1, h2, h3 {
  margin-top: 0;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.block {
  background: #f8f9fa;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 16px;
}

.notice {
  background: #fff3cd;
  border-left: 4px solid #f59e0b;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 16px;
}

.status {
  padding: 4px 8px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: bold;
  text-transform: uppercase;
}

.status.payment_pending {
  background: #fff3cd;
  color: #7a5200;
}

.status.approved {
  background: #d4edda;
  color: #0d5f1f;
}

.status.cancelled {
  background: #f8d7da;
  color: #8b1c28;
}

.btn {
  background: #1565c0;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 10px 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.btn.secondary {
  background: #455a64;
}

.btn.success {
  background: #2e7d32;
}

.btn.danger {
  background: #c62828;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: left;
}

.table th {
  background: #f1f5f9;
}

.error {
  color: #c62828;
  font-weight: bold;
}

.summary {
  background: #e1f5fe;
  border-radius: 6px;
  padding: 10px;
  margin-top: 10px;
}

.attendee-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid #eee;
}

@media (max-width: 768px) {
  .grid {
    grid-template-columns: 1fr;
  }
}