@import url("https://fonts.googleapis.com/css2?family=Nanum+Myeongjo&display=swap");

body {
  font-family: "Nanum Myeongjo", serif;
  background-color: #ecf0f1;
  /* 연한 회색 배경 */
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.login-box {
  background-color: #ffffff;
  /* 흰색 카드 */
  border: 1px solid #bdc3c7;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(44, 62, 80, 0.1);
  padding: 40px 30px;
  width: 90%;
  max-width: 400px;
}

.login-box h2 {
  text-align: center;
  color: #2c3e50;
  margin-bottom: 25px;
  font-size: 26px;
  font-weight: 600;
}

.login-box input {
  width: 100%;
  padding: 13px 14px;
  margin-bottom: 15px;
  border: 1px solid #bdc3c7;
  background-color: #fff;
  border-radius: 8px;
  font-size: 15px;
  color: #2c3e50;
  box-sizing: border-box;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.login-box input:focus {
  border-color: #34495e;
  outline: none;
  box-shadow: 0 0 0 3px rgba(52, 73, 94, 0.2);
}

.login-box button {
  width: 100%;
  padding: 13px;
  background-color: #2c3e50;
  color: white;
  font-weight: bold;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.login-box button:hover {
  background-color: #1a252f;
}

.login-box .link {
  text-align: right;
  margin-top: 10px;
}

.login-box .link a {
  color: #2c3e50;
  font-size: 13px;
  text-decoration: none;
}

.login-box .link a:hover {
  text-decoration: underline;
}

.error {
  color: red;
  font-size: 14px;
  margin-bottom: 15px;
  text-align: center;
}

#installPromptBtn {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    padding: 14px 24px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 999px;
    font-size: 1.1rem;
    font-weight: bold;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    z-index: 9999;
    cursor: pointer;
    display: none;
  }

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

    @media (max-width: 600px) {
    #installPromptBtn {
      width: 90%;
      font-size: 1rem;
    }
  }