@font-face {
            font-family: 'Montserrat';
            src: url('font/MONTSERRAT-BOLD.TTF') format('truetype');
            font-weight: 700;
            font-style: normal;
            font-display: swap;
        }
        @font-face {
            font-family: 'Montserrat';
            src: url('font/Montserrat-SemiBold.ttf') format('truetype');
            font-weight: 600;
            font-style: normal;
            font-display: swap;
        }
        @font-face {
            font-family: 'Montserrat';
            src: url('font/Montserrat-Medium.ttf') format('truetype');
            font-weight: 500;
            font-style: normal;
            font-display: swap;
        }
        @font-face {
            font-family: 'Montserrat';
            src: url('font/Montserrat-Regular.ttf') format('truetype');
            font-weight: 400;
            font-style: normal;
            font-display: swap;
        }
        @font-face {
            font-family: 'UNISANS';
            src: url('font/OFONT.RU_UNI\ SANS.TTF') format('truetype');
            font-style: normal;
            font-display: swap;
        }

        :root {
            --mainwhite: #F3F7F6;
            --GRAY: #767676;
            --RED: #66011A;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        .main_button {
            border: none;
            border-radius: 30px;
            font-family: 'Montserrat';
            font-size: 17px;
            font-weight: 700;
            color: var(--main-1);
            text-align: center;
            background-color: var(--mainwhite);
            width: 360px;
            padding: 10px 15px;
            transition: all 0.3s;
            cursor: pointer;
        }

        .main_button:hover {
            color: var(--mainwhite);
            background-color: rgba(243, 247, 246, 0.2);
            border: solid 0.8px var(--mainwhite);
        }

        .main_button:active {
            color: var(--mainwhite);
            background-color: inherit;
            border: solid 0.8px var(--mainwhite);
        }

        .form_button {
            border: 1px solid #393939;
            border-radius: 30px;
            font-family: 'Montserrat';
            font-size: 17px;
            font-weight: 700;
            color: var(--main-1);
            text-align: center;
            background-color: inherit;
            width: 100%;
            padding: 10px 15px;
            transition: all 0.3s;
            cursor: pointer;
        }

        .form_button:hover {
            color: var(--mainwhite);
            background-color: #393939;
            border: solid 0.8px #393939;
        }

        .form_button:active {
            color: var(--mainwhite);
            background-color: #292929;
            border: solid 0.8px #292929;
        }

        .form_button_back {
            border: none;
            border-radius: 30px;
            font-family: 'Montserrat';
            font-size: 17px;
            font-weight: 700;
            color: var(--mainwhite);
            text-align: center;
            background-color: #393939;
            width: 100%;
            padding: 10px 15px;
            transition: all 0.3s;
            cursor: pointer;
        }

        .form_button_back:hover {
            color: var(--mainwhite);
            background-color: #292929;
            border: solid 0.8px #292929;
        }

        .form_button_back:active {
            opacity: 0.5;
        }

        .Yandex_btn {
            height: 46px;
            width: 100%;
            display: flex;
            border: solid 1px #232323;
            background-color: #232323;
            border-radius: 10px;
            gap: 10px;
            justify-content: center;
            padding: 10px 18px;
            align-items: center;
            font-family: 'Montserrat';
            font-size: 14px;
            font-weight: 600;
            color: var(--mainwhite);
            cursor: pointer;
        }

        main {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url(img/fon_main.svg);
            background-repeat: no-repeat;
            background-size: cover;
        }

        .box-content {
            display: flex;
            border-radius: 56px;
            background: var(--mainwhite);
            width: 1200px;
            height: 692px;
            position: relative;
            overflow: hidden;
            padding: 10px;
        }

        /* Контейнер для формы входа (слева) */
        .login-container {
            flex: 1;
            padding: 10px 10px 10px 60px;
            position: relative;
            z-index: 1;
            transition: all 0.3s ease;
        }

        /* Контейнер для формы регистрации (справа, скрыт изначально) */
        .register-container {
            position: absolute;
            right: 0;
            top: 0;
            width: 460px;
            height: 100%;
            padding: 10px 60px 10px 10px;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            transform: translateX(100%);
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 3;
        }

        /* При открытии регистрации контейнер с регистрацией выезжает */
        .register-container.open {
            transform: translateX(0);
        }

        .container {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: flex-start;
        }

        .register-container .container {
            justify-content: flex-end;
        }

        /* Фиксированная ширина для .cards - 360px */
        .cards {
            width: 360px;
            height: max-content;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .card {
            width: 360px;
            height: max-content;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        /* Боковая панель с анимацией */
        .contaner_page {
            width: 700px;
            padding: 40px 32px 220px 32px;
            height: 100%;
            background: url(img/fon_cont.svg);
            background-repeat: no-repeat;
            background-size: cover;
            display: flex;
            flex-direction: column;
            align-items: start;
            justify-content: space-between;
            border-radius: 40px;
            gap: 32px;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            z-index: 2;
            transform: translateX(0);
        }
        .cont_header{
            width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        /* Анимация для боковой панели при переключении на регистрацию - сдвигается влево */
        .contaner_page.slide-to-register {
            transform: translateX(-480px);
        }

        /* Анимация для боковой панели при возврате на вход */
        .contaner_page.slide-to-login {
            transform: translateX(0);
        }

        h2 {
            font-family: 'UNISANS';
            font-size: 40px;
            color: #393939;
            text-align: center;
        }

        form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            width: 100%;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 4px;
            width: 100%;
        }

        label {
            font-family: 'Montserrat';
            font-size: 16px;
            font-weight: 400;
            color: #292929;
            margin-left: 15px;
        }

        input {
            width: 100%;
            border-top: none;
            border-left: none;
            border-right: none;
            border-bottom: solid 1px #393939;
            background: inherit;
            padding: 12px 15px;
            font-family: 'Montserrat';
            font-size: 14px;
            font-weight: 400;
            color: #393939;
            outline: none;
            transition: all 0.3s;
        }

        input:focus {
            transform: scale(1.02);
            border: solid 1px #393939;
            border-radius: 30px;
            outline: none;
        }

        input::placeholder {
            font-family: 'Montserrat';
            font-size: 14px;
            font-weight: 400;
            color: var(--GRAY);
        }

  

        .or_other {
            display: flex;
            width: 100%;
            gap: 14px;
            align-items: center;
        }

        .or_other p {
            font-family: 'Montserrat';
            font-size: 16px;
            font-weight: 400;
            color: #AAAAAA;
            margin: 0;
        }

        .solid {
            background-color: #AAAAAA;
            width: 100%;
            height: 1px;
        }

        .cont_header {
            display: flex;
            flex-direction: column;
            gap: 15px;
            transition: all 0.3s ease;
        }

        h1 {
            font-family: 'UNISANS';
            font-size: 40px;
            color: var(--mainwhite);
            text-align: center;
        }

        .cont_header p {
            font-family: 'Montserrat';
            font-size: 20px;
            font-weight: 500;
            color: var(--mainwhite);
            text-align: center;
        }

        .custom-checkbox {
            display: flex;
            align-items: center;
            cursor: pointer;
            font-size: 1rem;
            user-select: none;
            position: relative;
            gap: 12px;
        }

        .custom-checkbox input {
            position: absolute;
            opacity: 0;
            width: 0;
            height: 0;
        }

        .checkmark {
            position: relative;
            width: 20px;
            height: 20px;
            background-color: inherit;
            border: 2px solid #393939;
            border-radius: 6px;
            transition: all 0.2s ease-in-out;
            flex-shrink: 0;
        }

        .custom-checkbox:hover input:not(:disabled) ~ .checkmark {
            border-color: #292929;
        }

        .custom-checkbox input:checked ~ .checkmark {
            background-color: #393939;
            border-color: #393939;
        }

        .checkmark:after {
            content: "";
            position: absolute;
            display: none;
            left: 6px;
            top: 0px;
            width: 5px;
            height: 10px;
            border: solid var(--mainwhite);
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
        }

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

        .label-text {
            font-family: 'Montserrat';
            font-size: 12px;
            font-weight: 400;
            color: #292929;
        }

        .link_check {
            font-family: 'Montserrat';
            font-size: 12px;
            font-weight: 400;
            color: #393939;
            text-decoration: underline;
            cursor: pointer;
        }

        .code-inputs {
            display: flex;
            gap: 40px;
            justify-content: center;
        }

        .code-input {
            width: 60px;
            height: 60px;
            border-bottom: 1px solid #393939;
            background: inherit;
            padding: 12px;
            font-family: 'Montserrat';
            font-size: 24px;
            font-weight: 600;
            text-align: center;
            color: #292929;
            outline: none;
        }

        .code-input:focus {
            transform: scale(1.05);
            border-color: #292929;
            border: 1px solid;
            border-radius: 20px;
        }

        .subtitle {
            font-family: 'Montserrat';
            font-size: 18px;
            font-weight: 400;
            color: var(--Black);
            text-align: center;
        }

        .buttons {
            display: flex;
            flex-direction: column;
            gap: 10px;
            width: 100%;
        }

        .hidden {
            display: none !important;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes slideInRight {
            from {
                opacity: 0;
                transform: translateX(30px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .cards, .card {
            animation: slideInRight 0.4s ease-out;
        }

        @media (max-width: 1024px) {
            .box-content {
                width: 844px;
                height: 594px;
            }
            .login-container {
                padding: 10px 10px 10px 40px;
            }
            .register-container {
                width: 460px;
                padding: 10px 40px 10px 10px;
            }
            .contaner_page {
                width: 382px;
            }
            .contaner_page.slide-to-register {
                transform: translateX(-360px);
            }
        }

        @media (max-width: 768px) {
            main {
                padding: 50px 100px;
            }
            .box-content {
                width: 844px;
                height: auto;
                display: flex;
                flex-direction: column;
                gap: 20px;
            }
            .login-container {
                width: 100%;
                padding: 40px;
            }
            .register-container {
                position: static;
                width: 100%;
                padding: 40px;
                transform: translateX(0);
                display: none;
            }
            .register-container.open {
                display: flex;
            }
            .container {
                width: 100%;
                justify-content: center !important;
            }
            .cards, .card {
                width: 100%;
                max-width: 360px;
                margin: 0 auto;
            }
            .or_other {
                margin-top: 15px;
                margin-bottom: 15px;
            }
            .contaner_page {
                width: 100%;
                padding: 25px 0;
                order: 2;
                transform: translateX(0) !important;
            }
            .main_button {
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .login-container {
                padding: 7%;
            }
            h2 {
                font-size: 36px;
            }
            .cards {
                gap: 20px;
            }
            h1 {
                font-size: 32px;
            }
            .cont_header p {
                font-size: 14px;
            }
        }
       
.error-message {
    color: #ff6b6b;
    font-family: 'Montserrat';
    font-size: 12px;
    display: none;
}

.form-group.error .error-message {
    display: block;
}

.form-group.error input,
.form-group.error textarea {
    border-bottom-color: #ff6b6b;
}