:root {
  --bg: #f0fdf4;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #4b5563;
  --primary: #16a34a;
  --primary-hover: #15803d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Comic Sans MS", "Comic Sans", cursive;
  color: var(--text);
  background: var(--bg);
}

.topbar,
.footer {
  text-align: center;
  padding: 1rem;
}

.topbar p,
.footer small {
  color: var(--muted);
}

.container {
  width: min(1440px, 100%);
  margin: 0 auto 2rem;
  padding: 0 1rem;
  display: grid;
  gap: 1rem;
}

.card {
  width: 100%;
  background: var(--card);
  border-radius: 14px;
  padding: 1.25rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.button-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 0.8rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  background: var(--primary);
  color: white;
  cursor: pointer;
}

button:hover,
button:focus-visible {
  background: var(--primary-hover);
}

#message {
  margin-top: 1rem;
  font-weight: 600;
}