@import url('https://fonts.googleapis.com/css2?family=Roboto&display=swap');
* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'roboto', sans-serif;
}

html {
    scroll-behavior: smooth;
}

.sec1 {
    width: 100%;
    height: 100vh;
    background-color: rgb(0, 211, 112);
    box-shadow: black 2px 2px 2px 2px;
}

header {
    display: flex;
    justify-content: space-between;
    padding: 20px;
    height: 70px;
    align-items: center;
    box-shadow: black 0px 0px 12px -4px;
}

.logo img {
    width: 40px;
    border-radius: 50%;
}

.navbar a {
    text-decoration: none;
    color: #030505;
    background-color: #ffffff;
    padding: 5px;
    border-radius: 2px;
    box-shadow: #0000004d 2px 2px 0px -1px, inset #00d370 -30px 0px 0px 0px;
    font-size: larger;
    text-transform: capitalize;
    transition: 0.2s;
}

.navbar a:hover {
    background-color: rgb(255, 255, 255);
    box-shadow: #0000004d 0px 0px 0px 0px, inset #00f181 -121px 0px 0px 0px;
    color: floralwhite;
}

.navbar a .us {
    color: floralwhite;
}


/* ---------------------maim------------------------ */

main {
    padding: 35px;
    width: 100%;
    height: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(255, 217, 0, 0);
}


/* ------------main content ----------------- */

.content {
    margin: auto;
    width: 50%;
    height: 360px;
    text-transform: capitalize;
    background-color: rgba(245, 46, 46, 0);
    padding: 30px;
}

.subcontent {
    background-color: rgba(153, 50, 204, 0);
}

.content h1 {
    letter-spacing: 2px;
    font-size: 30px;
    color: rgb(255, 255, 255);
    padding-bottom: 22px;
    text-shadow: black 1px 1px 1px;
}

.content h1 .c {
    background-color: rgb(241, 255, 40);
    padding: 3px 12px 3px 12px;
    margin: 3px;
    color: rgb(206, 0, 0);
    display: inline-block;
    transform: rotate(-15deg);
    border-radius: 50%;
    text-transform: uppercase;
}

.content p {
    word-wrap: break-word;
    letter-spacing: 1px;
    color: rgb(255, 255, 255);
    font-weight: 400;
    padding-bottom: 32px;
}

p a {
    text-decoration: none;
    color: rgb(4 42 46);
    font-weight: 900;
    font-size: 15px;
}

.btnbox {
    width: 100%;
    display: flex;
}

.btn {
    width: 100px;
    height: 35px;
    outline: none;
    border: none;
    color: rgb(255, 255, 255);
    font-size: 17px;
    background-color: rgb(39, 50, 61);
    margin: 10px;
}

.buy {
    transition: 0.5s;
    box-shadow: inset #fabd3b 0px 4px 1px -1px;
}

.buy:hover {
    color: black;
    box-shadow: inset #fab92e 0px 50px 1px -1px;
}

.demo {
    transition: 0.5s;
    box-shadow: inset #ff7a7a 0px 4px 1px -1px;
}

.demo:hover {
    color: black;
    box-shadow: inset #ff7a7a 0px 50px 1px -1px;
}


/* ------------------main visual ------------------- */

.visual {
    width: 50%;
    margin: auto;
    height: 470Px;
    padding: 30px;
    background: rgba(100, 148, 237, 0);
}

.subvisual {
    max-width: 250px;
    float: right;
    display: flex;
    align-items: center;
    background: rgba(255, 127, 80, 0);
}

.bookimg {
    width: 100%;
    height: auto;
    margin-right: 20px;
    box-shadow: 0px 10px 40px -15px;
}

li {
    list-style: none;
}

.social ul li a img {
    width: 30px;
}


/* ------------thumb-------------- */

.thumb {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 0px;
}

.thumb .book {
    width: 50px;
    margin: 15px;
    box-shadow: #030505 1px 6px 10px -7px;
    cursor: pointer;
}


/* --------------------section 2----------------- */

.sec2 {
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgb(0, 211, 112);
}

.formbox {
    background-color: #00f7a54a;
    border-radius: 4px;
    padding: 50px;
}

h2 {
    text-align: center;
    color: #ffffff;
    text-shadow: black 0 0 2px;
}

form {
    max-width: 300px;
}

input {
    width: 100%;
    height: 30px;
    outline: none;
    padding: 3px;
    border: none;
    border-radius: 3px;
    margin-bottom: 10px;
}

textarea {
    border-radius: 3px;
    padding: 3px;
    outline: none;
    border: none;
}

#submit {
    width: 50%;
    text-align: center;
    margin-top: 22px;
    float: right;
    box-shadow: rgb(0, 255, 166) inset 0px 0px 0px 15px;
    transition: 0.5s;
}

#submit:hover {
    box-shadow: none;
    background-color: rgb(16, 16, 16);
    color: white;
}


/* ---------------resposive------------------ */

@media screen and (max-width:739px) {
    .sec1 {
        box-shadow: none;
        height: auto;
    }
    main {
        display: grid;
        margin: auto;
        height: auto;
    }
    .content {
        width: 100%;
        text-align: center;
        height: auto;
    }
    .btnbox {
        justify-content: center;
    }
    .visual {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        margin: auto;
        height: 340px;
    }
    .subvisual {
        float: none;
    }
    .social {
        display: none;
    }
    .sec2 {}
    .thumb {
        height: 110px;
    }
}