* {
    font-family: sans-serif;
    margin: 0;
}
main {
    display: flex;
    height: 100svh;
}
a {
    font-size: 14px;
    color: #34495e;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
button {
    background: linear-gradient(to top left, #17a086, #34495e);
    color: #fff;
    border: none;
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    font-weight: bold;
    cursor: pointer;
}
input {
    display: block;
    padding: 15px 12px;
    width: 100%;
    border-radius: 5px;
    border: 1px solid #e4e4e4;
    margin: 12px 0;
    outline: none;
    box-sizing: border-box;
}
form {
    width: 400px;
}
footer {
    display: flex;
    justify-content: center;
    font-size: 13px;
    padding: 12px 16px;
    gap: 10px;
    display: none;
}
.left_block {
    width: 650px;
    background: url(https://vnu.edu.ua/sites/default/files/2021-02/%D0%93%D0%BE%D0%BB%D0%BE%D0%B2%D0%BD%D0%B8%D0%B9%201.jpg);
    background: url('/design/img/fon.jpg');
    background-size: cover;
    background-repeat: repeat;
    background-position: center;
    box-shadow: inset -25px 0 20px -25px rgb(0 0 0 / 70%);
}
.right_block {
    width: 100%;
    padding: 20px;
    box-sizing: border-box;
}
.left_block, .right_block {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}
.title {
    font-size: 30px;
    font-weight: bold;
}
.or {
    margin: 4px 0;
    display: flex;
    align-items: center;

}
.text_line {
    margin: 2px 7px;
}
.line {
    background-color: #eff3f4;
    width: 100%;
    height: 1px;
}
.login_button {
    display: block;
    background: linear-gradient(to top left, #17a086, #34495e);
    -webkit-background-clip: text;
    color: transparent;
    border: 1px solid #e4e4e4;
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    font-weight: bold;
    text-decoration: none;
    text-align: center;
    font-size: 14px;
    box-sizing: border-box;
}
.login_button:hover {
    background-color: #f4f4f4;
    text-decoration: none;
}
.text_link {
    display: block;
    margin-bottom: 10px;
    text-align: center;
}
.logo {
    display: flex;
    margin-bottom: 40px;
}

@media (min-width: 1100px) {
    .right_block {
        width: calc(100% - 650px);
    }
    .logo {
        position: relative;
        left: -7px;
    }
    .logo img {
        max-height: 50px;
    }
}

@media (max-width: 1099px) {
    .left_block {
        display: none;
    }
    .logo {
        justify-content: center;
    }
    .logo img {
        max-height: 55px;
    }
}