body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #0f1117;
  color: #fff;
}
nav {
  display: flex;
  justify-content: space-around;
  background: #1a1c22;
  padding: 1rem;
}
nav a {
  color: #08fdd8;
  text-decoration: none;
  font-weight: bold;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  padding: 2rem;
}
footer {
  text-align: center;
  padding: 1rem;
  background: #1a1c22;
  color: #aaa;
}
.card {
  background: #1e222d;
  padding: 1rem;
  border-radius: 8px;
}
form {
  display: flex;
  flex-direction: column;
  max-width: 500px;
  margin: auto;
}
input, textarea {
  margin: 0.5rem 0;
  padding: 0.75rem;
  border: none;
  border-radius: 4px;
}
button {
  background: #08fdd8;
  border: none;
  padding: 0.75rem;
  font-weight: bold;
  cursor: pointer;
  border-radius: 4px;
}