body {
  margin: 0;
  padding: 20px;
  background-color: #121212;
  color: #f0f0f0;
  font-family: 'Segoe UI', sans-serif;
}

footer {
  text-align: center;
  margin-top: 40px;
  color: #aaa;
  font-size: 14px;
}

footer a {
  color: #f4b728;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

.container {
  max-width: 420px;
  margin: auto;
  background: #1e1e1e;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.5);
}

input,
select,
button {
  width: 100%;
  padding: 12px;
  margin: 12px 0;
  font-size: 16px;
  border-radius: 8px;
  border: 1px solid #333;
  background-color: #2a2a2a;
  color: #f0f0f0;
  transition: all 0.2s ease;
  box-sizing: border-box;
}

input:focus,
select:focus {
  border-color: #f4b728;
  outline: none;
  box-shadow: 0 0 4px #f4b72888;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg fill='%23f4b728' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px 16px;
}

button {
  background-color: #f4b728;
  color: #1e1e1e;
  font-weight: bold;
  border: none;
}

button:hover {
  background-color: #ffcc00;
}

#output {
  margin-top: 20px;
  text-align: center;
  word-break: break-all;
  text-decoration: none;
  color: white;
}

canvas {
  margin-top: 10px;
  border: 1px solid #333;
  border-radius: 8px;
}

@media (max-width: 480px) {
  .container {
    padding: 16px;
  }

  input,
  select,
  button {
    font-size: 15px;
    padding: 10px;
  }
}