* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: #121212;
  color: #eee;
  font-family: "Segoe UI", Tahoma, sans-serif;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(20, 20, 20, 0.95);
  padding: 1rem 2rem;
  border-bottom: 1px solid #333;
}

.home-link {
  color: #0ff;
  font-size: 1.5rem;
  text-decoration: none;
}

.home-link:hover {
  color: #0fa;
}

.menu a {
  margin-left: 1rem;
  color: #0ff;
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 6px;
  background-color: #222;
  transition: background 0.3s;
}

.menu a:hover {
  background-color: #0ff;
  color: #111;
}

.main-content {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
  background: #1e1e1e;
  border-radius: 10px;
  box-shadow: 0 0 12px rgba(0, 255, 255, 0.1);
}

.main-content h2 {
  margin-bottom: 1.5rem;
  text-align: center;
  color: #0ff;
}

.form-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

input, textarea {
  background: #222;
  border: 1px solid #444;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  color: #eee;
  font-size: 1rem;
}

input:focus, textarea:focus {
  border-color: #0ff;
  outline: none;
}

.generate-button, .download-button {
  background: #007bff;
  color: white;
  font-size: 1.1rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.generate-button:hover, .download-button:hover {
  background-color: #0056b3;
}

.output-panel {
  margin-top: 2rem;
}

.plan-box {
  background: #181818;
  padding: 1rem;
  border-radius: 6px;
  border: 1px solid #333;
  white-space: pre-wrap;
  margin-top: 1rem;
}

.hidden {
  display: none;
}

footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  border-top: 1px solid #333;
  background-color: #101010;
}