body {
            font-family: Arial, sans-serif;
            text-align: center;
            padding: 50px;
            background-color: #f1f1f1;
        }

        .container1 {
            background: white;
            padding: 20px;
            border-radius: 10px;
            display: inline-block;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
        }

        input {
            padding: 10px;
            width: 80%;
            margin-bottom: 10px;
            display: block;
        }

        button {
            padding: 10px 20px;
            background: #1976D2;
            color: white;
            border: none;
            cursor: pointer;
            font-size: 16px;
            border-radius: 5px;
        }

        button:hover {
            background: #135bb8;
        }

        .error {
            color: red;
            margin-top: 10px;
        }

        .input-group {
            position: relative;
            width: 100%;
            max-width: 300px;
            margin-bottom: 15px;
        }

        .input-group input {
            width: 100%;
            padding: 10px 40px 10px 10px;
            font-size: 14px;
            border: 1px solid #ccc;
            border-radius: 4px;
            box-sizing: border-box;
        }

        .input-group i {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: #555;
        }

        /* Loader */
        .container2 {
            position: relative;
            height: 120px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        #loaderModal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.8);
            z-index: 1000;
        }

        #loaderContent {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }

        .item {
            position: absolute;
            background-color: transparent;
            width: calc(var(--i) * 2.5vmin);
            aspect-ratio: 1;
            border-radius: 50%;
            border: 0.9vmin solid rgb(0, 200, 255);
            transform-style: preserve-3d;
            transform: rotateX(70deg) translateZ(50px);
            animation: my-move 3s ease-in-out calc(var(--i) * 0.08s) infinite;
            box-shadow: 0px 0px 15px rgb(124, 124, 124),
                inset 0px 0px 15px rgb(124, 124, 124);
        }

        @keyframes my-move {

            0%,
            100% {
                transform: rotateX(70deg) translateZ(50px) translateY(0px);
                filter: hue-rotate(0deg);
            }

            50% {
                transform: rotateX(70deg) translateZ(50px) translateY(-50vmin);
                filter: hue-rotate(180deg);
            }
        }

        #public-scan-btn {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 55px;
            height: 55px;
            background-color: #1976D2;
            color: white;
            border-radius: 50%;
            font-size: 24px;
            display: flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
            z-index: 1001;
            text-decoration: none;
        }

        #public-scan-btn:hover {
            background-color: #135bb8;
        }