/* 회원가입 컨테이너 */
.signup-container {
  max-width: 500px;
  margin: 50px auto;
  padding: 30px;
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  font-family: 'Segoe UI', Arial, sans-serif;
}

.signup-container h1 {
  text-align: center;
  color: #333;
  margin-bottom: 20px;
}

.signup-container form {
  display: flex;
  flex-direction: column;
}

/* 입력 필드 스타일 */
.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 15px;
}

.form-group label {
  font-size: 14px;
  font-weight: bold;
  color: #555;
  margin-bottom: 5px;
}

.form-group input {
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 15px;
  transition: all 0.3s ease;
}

.form-group input:focus {
  border-color: #007bff;
  box-shadow: 0 0 8px rgba(0,123,255,0.2);
  outline: none;
}

/* 회원가입 버튼 */
.signup-container form button {
  padding: 12px;
  background: linear-gradient(135deg, #28a745, #218838);
  color: #fff;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s;
  margin-top: 10px;
}

.signup-container form button:hover {
  background: #1e7e34;
}

/* 에러 메시지 */
.error-message {
  color: #ff0000;
  text-align: center;
  margin-bottom: 15px;
  font-weight: bold;
}

/* 반응형 디자인 */
@media (max-width: 480px) {
  .signup-container {
    width: 90%;
    padding: 20px;
  }
}