body {
  font-family: sans-serif;
  text-align: center;
  background-color: #f9f9f9;
  padding: 30px;
}

h1 {
  color: #333;
}

.form-box {
  display: none;
  margin: 20px auto;
  width: 90%;
  max-width: 400px;
  background: white;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

.form-box.active {
  display: block;
}

input, textarea {
  width: 90%;
  padding: 10px;
  font-size: 1em;
  margin-bottom: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

textarea {
  height: 80px;
  resize: vertical;
}

button {
  padding: 10px 20px;
  background-color: #007bff;
  color: white;
  border: none;
  font-size: 1em;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}

.link {
  color: blue;
  text-decoration: underline;
  cursor: pointer;
}

.line-login-btn {
  display: inline-block;
  background-color: #06c755;
  color: white;
  font-weight: bold;
  padding: 12px 24px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 16px;
  margin-bottom: 20px;
}

.line-login-btn:hover {
  background-color: #04a64f;
}