body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at center, #0a0f1f, #000000 80%);
  color: #00eaff;
  font-family: 'Orbitron', 'Segoe UI', system-ui, sans-serif;
}

.main {
  text-align: center;
  padding: 15vh 20px 10vh;
  max-width: 720px;
  margin: 0 auto;
}

a {
  color: #00eaff;
}

nav a {
  display: inline-block;
  padding: 4px 2px;
}

input, button {
  padding: 10px;
  margin: 5px;
  border-radius: 4px;
  border: 1px solid #00eaff55;
  background: #050811;
  color: #00eaff;
  font: inherit;
}

input {
  min-width: 260px;
}

button {
  cursor: pointer;
  border-color: #00eaff;
}

button:hover {
  background: #0a1524;
}

button[disabled] {
  opacity: 0.5;
  cursor: progress;
}

pre {
  text-align: left;
  display: inline-block;
  background: #050811;
  border: 1px solid #00eaff33;
  border-radius: 6px;
  padding: 16px 20px;
  overflow-x: auto;
  max-width: 100%;
}

.error {
  color: #ff6b81;
}

.status-line {
  font-size: 1.4rem;
}