:root {
  --brand-color: #4bbfec;
}
body {
  font-family: "Segoe UI", sans-serif;
  background: #f5f9fc;
  color: #333;
  margin: 0;
  padding: 0;
}

.container {
  padding: 2rem;
  max-width: 800px;
  margin: auto;
}
input,
button {
  padding: 10px;
  margin: 10px 0;
  border-radius: 8px;
  border: 1px solid #ccc;
}
button {
  background: var(--brand-color);
  color: white;
  font-weight: bold;
  cursor: pointer;
}
.card {
  background: white;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  margin-top: 1rem;
}