/* 공통 스타일 */
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            box-sizing: border-box; }

     /* 내비게이션 스타일 */
        #nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background-color: #007bff;
            padding: 10px 20px;
            color: #fff;
        }

        #nav a {
            color: #fff;
            text-decoration: none;
            font-weight: bold;
            padding: 5px 10px;
            border-radius: 5px;
            transition: background-color 0.3s ease;
        }

        #nav a:hover {
            background-color: #0056b3;
        }

        #nick {
            border-radius: 10px;
            border: none;
        }


        /* 채팅 컨테이너 스타일 */
        .container {
            max-width: 800px;
            margin: 20px auto;
            padding: 0 20px;
            position: relative;
        }

        .chat-container {
            background-color: #f9f9f9;
            border: 1px solid #ccc;
            border-radius: 10px;
            padding: 20px;
        }

        .chat-box {
            height: 750px;
            overflow-y: auto;
            margin-bottom: 10px;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
            background-color: #fff;
        }

        /* 입력 폼 스타일 */
        [name='user-input'] {
            flex: 1;
            width: 88%;
            height: 100px;
            padding: 10px;
            margin-right: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
            box-sizing: border-box;
        }

        #send-btn {
            padding: 10px 20px;
            background-color: #007bff;
            color: #fff;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }

        #send-btn:hover {
            background-color: #0056b3;
        }


        #check-btn {
            text-decoration: none;
            color: white;
            background-color: #007bff;
            font-weight: bold;
            padding: 10px 20px;
            border: 1px solid #007bff;
            border-radius: 5px;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        #check-btn:hover {
            background-color: #0056b3;
            color: #fff;
        }

        #save-btn {
            text-decoration: none;
            color: white;
            background-color: #007bff;
            font-weight: bold;
            padding: 10px 20px;
            border: 1px solid #007bff;
            border-radius: 5px;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        #save-btn:hover {
            background-color: #0056b3;
            color: #fff;
        }

.blinking-cursor {
  margin-left: 5px;
  background-color: #fff;
  animation: blink 1s infinite;
}
@keyframes blink {
  0%, 50% {
    opacity: 1;
  }
  50.1%, 100% {
    opacity: 0;
  }
}

.spinner {
    border: 16px solid #f3f3f3;
    border-radius: 50%;
    border-top: 16px solid #3498db;
    width: 30px;
    height: 30px;
    animation: spin 2s linear infinite;
    margin: auto;
    position: absolute;
    left:50%;
    top:50%;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

#spinner {
    display: none;
}

@keyframes spin {
    0% { transform: rotate(0deg);}
    100% { transform: rotate(360deg);}
}