body {
  margin: 0;
  font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
  background-color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.signup-container {
  width: 100%;
  max-width: 400px;
  padding: 32px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
  border-radius: 16px;
  box-sizing: border-box;
  background-color: #fff;
}

.signup-container h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 24px;
  color: #222;
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.signup-form input {
  padding: 14px 16px;
  border: 1px solid #ddd;
  border-radius: 12px;
  font-size: 16px;
  transition: border-color 0.3s;
}

.signup-form input:focus {
  outline: none;
  border-color: #3182F6;
}

.signup-form button {
  padding: 14px;
  background-color: #3182F6;
  color: white;
  font-size: 16px;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.signup-form button:hover {
  background-color: #2563eb;
}

.login-link {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: #555;
}

.login-link a {
  color: #3182F6;
  text-decoration: none;
  font-weight: 500;
}

.back-button {
  font-size: 24px;
  text-decoration: none;
  color: #333;
  display: inline-block;
  margin-bottom: 12px;
  transition: color 0.2s;
}

.back-button:hover {
  color: #3182F6;
}

.error-message {
  color: red;
  margin-top: 10px;
  font-size: 14px;
}

.password-conditions div {
  font-size: 14px;
  margin: 4px 0;
  color: #555;
}

.password-conditions .valid {
  color: green;
}

.password-conditions .invalid {
  color: red;
}

.divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 24px 0 16px;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid #ccc;
}

.divider:not(:empty)::before {
  margin-right: 8px;
}

.divider:not(:empty)::after {
  margin-left: 8px;
}

.google-login-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 12px;
  font-size: 16px;
  cursor: pointer;
  background-color: white;
  transition: background-color 0.2s, border-color 0.2s;
}

.google-login-btn:hover {
  background-color: #f9f9f9;
  border-color: #aaa;
}

.google-login-btn img {
  width: 20px;
  height: 20px;
}