body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont,
    'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f8f8f8;
  color: #222;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
}

main {
  background: #fff;
  padding: 2rem;
  margin: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  max-width: 600px;
  width: 100%;
}

h1 {
  margin-top: 0;
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

input[type="url"] {
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  width: 100%;
}

button[type="submit"] {
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  background-color: #00794c;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

button[type="submit"]:hover {
  background-color: #00673e;
}

.result {
  margin-top: 1rem;
  font-size: 0.9rem;
  word-break: break-all;
}