.underline-input {
            border: none;
            border-bottom: 2px solid white;
            outline: none;
            padding: 8px 4px;
            width: 60%;
            background: transparent;
            color: white;
        }

        @font-face {
            font-family: 'Dana';
            src: url('file/fonts/Dana-Bold.ttf') format('ttf');
            font-weight: bold;
            font-style: bold;
            font-display: swap;
        }

        @font-face {
            font-family: 'Dana';
            src: url('file/fonts/Dana-Medium.ttf') format('ttf');
            font-weight: normal;
            font-style: normal;
            font-display: swap;
        }

        body {
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            font-family: 'Dana';
            background-color: #ffffffff;
        }

        .main {
            width: 350px;
            height: 500px;
            background: #135952;
            overflow: hidden;
            border-radius: 10px;
            box-shadow: 5px 20px 50px #000;
            text-align: center;
        }

        #imgLogo {
            border-radius: 50%;
            width: 30%;
        }

        #mtnLogin {
            color: #FA652A;
            font-size: larger;
        }

        .signup {
            position: relative;
            width: 100% !important;
            height: 100% !important;
        }

        label {
            color: #fff;
            font-size: large;
            justify-content: center;
            display: flex;
            margin: -15px;
            font-weight: bold;
            cursor: pointer;
            transition: .5s ease-in-out;
        }

        .inpt {
            width: 60%;
            height: 40px;
            background: #e0dede;
            justify-content: center;
            display: flex;
            margin: 20px auto;
            padding: 10px;
            border: none;
            outline: none;
            border-radius: 5px;
        }

        .mobile {
            width: 60%;
            height: 40px;
            background: #e0dede;
            justify-content: center;
            display: flex;
            margin: 20px auto;
            padding: 10px;
            border: none;
            outline: none;
            border-radius: 5px;
        }

        .inputTeacher {
            margin: 10% 18%;
            display: flex;
            direction: rtl;
            align-items: center;
            justify-content: center;
        }

        /* استایل جدید برای چک‌باکس */
        .checkbox-container {
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: relative;
            padding-right: 35px;
            color: white;
            font-size: 14px;
            user-select: none;
        }

        .checkbox-container input {
            position: absolute;
            opacity: 0;
            cursor: pointer;
            height: 0;
            width: 0;
        }

        .checkmark {
            position: absolute;
            right: 0;
            height: 22px;
            width: 22px;
            background-color: #f8f9fa;
            border-radius: 5px;
            transition: all 0.3s ease;
            border: 2px solid #ddd;
        }

        .checkbox-container:hover input~.checkmark {
            background-color: #e9ecef;
            border-color: #adb5bd;
        }

        .checkbox-container input:checked~.checkmark {
            background-color: #FFB347;
            border-color: #FFB347;
        }

        .checkmark:after {
            content: "";
            position: absolute;
            display: none;
        }

        .checkbox-container input:checked~.checkmark:after {
            display: block;
        }

        .checkbox-container .checkmark:after {
            left: 7px;
            top: 3px;
            width: 5px;
            height: 10px;
            border: solid white;
            border-width: 0 3px 3px 0;
            transform: rotate(45deg);
        }

        .btn {
            width: 60%;
            height: 40px;
            margin: 10px auto;
            justify-content: center;
            display: block;
            color: rgb(106, 0, 133);
            background: #FFB347;
            font-size: 1em;
            font-weight: bold;
            margin-top: 2%;
            outline: none;
            border: none;
            border-radius: 5px;
            transition: .2s ease-in;
            cursor: pointer;
        }

        .login {
            height: 100%;
            width: 100%;
            background-size: cover;
            border-radius: 60% / 10%;
            transform: translateY(-400px);
            transition: .8s ease-in-out;
        }

        .login label {
            color: white;
            font-size: small;
        }

        .code-input {
            width: 18%;
            height: 50px;
            text-align: center;
            font-size: 20px;
            border: 1px solid #ddd;
            border-radius: 6px;
            transition: all 0.3s;
            direction: ltr;
        }

        .code-input:focus {
            border-color: #4a90e2;
            box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
            outline: none;
        }

        .code-section {
            margin-top: 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, opacity 0.3s ease;
            opacity: 0;
        }

        .code-section.visible {
            max-height: 500px;
            opacity: 1;
        }

        .code-inputs {
            display: flex;
            justify-content: space-between;
            margin-top: 10px;
        }

        @media (max-width: 480px) {
            .main {
                padding: 20px;
                margin: 15px;
            }
        }

        .success-message {
            color: #28a745;
            font-size: 14px;
            margin-top: 15px;
            text-align: center;
        }

        .error-message {
            color: #e74c3c;
            font-size: 13px;
            margin-top: 5px;
            display: none;
        }

        .otp-inputs {
            display: flex;
            justify-content: space-between;
            margin: 6px 15%;
            direction: ltr !important;
        }

        .otp-box {
            width: 14%;
            text-align: center;
        }

        .text-danger {
            color: #e74c3c;
            font-size: 13px;
            margin-top: 10px;
        }

        .text-success {
            color: #28a745;
            font-size: 13px;
            margin-top: 10px;
        }