* {
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #0a1a3a, #000);
  color: #eaeaea;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

.header {
  padding: 40px 20px;
  text-align: center;
}

.subtitle {
  max-width: 700px;
  margin: 10px auto 0;
  opacity: 0.85;
}

.container {
  max-width: 900px;
  margin: auto;
  padding: 20px;
}

.controls {
  display: flex;
  gap: 15px;
  margin: 30px 0;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  color: #fff;
  cursor: pointer;
}

.btn-primary {
  background: #2563eb;
}

.btn-secondary {
  background: #444;
}

.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.status {
  margin: 30px 0;
  text-align: center;
}

.hidden {
  display: none;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #444;
  border-top-color: #2563eb;
  border-radius: 50%;
  margin: 0 auto 10px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.documentation {
  background: rgba(255, 255, 255, 0.05);
  padding: 20px;
  border-radius: 8px;
  margin-top: 30px;
}

pre {
  background: #000;
  padding: 15px;
  border-radius: 6px;
  overflow-x: auto;
}

.back-link {
  display: inline-block;
  margin-top: 30px;
  color: #7aa2ff;
}