body {
  font-family: system-ui, sans-serif;
  background: #0f172a;
  color: #e5e7eb;
  padding: 20px;
}

h1 {
  text-align: center;
}

.subtitle {
  text-align: center;
  opacity: 0.7;
}

.back {
  color: #9ca3af;
  text-decoration: none;
}

.container {
  max-width: 420px;
  margin: auto;
}

label {
  margin-top: 16px;
  display: block;
}

select {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: none;
  margin-top: 6px;
}

.timeline {
  margin-top: 24px;
}

.timeline .labels {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  opacity: 0.7;
}

.timeline input {
  width: 100%;
}

.preview {
  background: #020617;
  padding: 16px;
  border-radius: 12px;
  margin-top: 24px;
}

.btn {
  display: inline-block;
  margin-top: 12px;
  background: #22c55e;
  color: #022c22;
  padding: 12px 16px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: bold;
}

.hidden {
  display: none;
}