@import url("common.css");
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@100..900&display=swap');

body {
    font-size: 17px;
    font-family: "Noto Sans KR", sans-serif;
}

/* header style */
header {
    /*background: tomato;*/
    /*border: 4px solid green;*/

    position: fixed;
    top: 0;
    z-index: 1000;
    width: 100%;
    display: flex;
    align-items: center;
    padding: 20px 50px;
    color: #fff;
    font-weight: 700;
}

header .logo {
    /*border: 3px solid yellow;*/
    flex: 1;
}
header .logo img {
    height: 60px;
}
header .intro {
    /*border: 3px solid blue;*/
    flex: 4;
    margin-left: 30px;
}
header .menu-open {
    /*border: 3px solid orange;*/
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding-right: 20px;
}
header .menu-open .menu-txt {
    font-size: 20px;
    margin-right: 15px;
}
header .menu-open .bar-icon {
    font-size: 33px;
}
header .gnb {
    background: #000;
    color: #666;
    font-size: 40px;
    padding: 70px 100px;

    position: fixed;
    right: -100%;
    top: 0;
    height: 100vh;

    display: flex;
    flex-direction: row-reverse;

    transition: 0.6s;
}
header .gnb.on {
    right: 0;
}

header .gnb .close {
    /*border: 3px solid yellow;*/
    color: #fff;
}
header .gnb ul {
    /*border: 3px solid aqua;*/
    margin-right: 200px;
}
header .gnb ul li {
    font-weight: 700;
    margin-bottom: 25px;
}
header .gnb ul li:hover {
    color: #fff;
}

/* section visual style */
section.visual {
    background: url("https://an2-img.amz.wtchn.net/image/v2/E7OmlxLKtsdNBGjba7UCSw.webp?jwt=ZXlKaGJHY2lPaUpJVXpJMU5pSjkuZXlKdmNIUnpJanBiSW1SZk1USTRNSGczTWpCeE9EQWlYU3dpY0NJNklpOTJNaTl6ZEc5eVpTOXBiV0ZuWlM4MU1EUTBPRGc0TWpNMk5Ua3lNamtpZlEuYmlNcVdIdDBmZ2oySUFFVDJVRFdlRmowZjVJU3loYkZuRmFGckNFbnZ1aw==")
                no-repeat center/cover;
    height: 100vh;
    display: flex;
    align-items: center;
}

section.visual .overlay {
    width: 100%;
    height: 100vh;
    background: rgba(0,0,0, 0.3);
    position: absolute;
    left: 0;
    top: 0;
}

section.visual .txt {
    /*background: red;*/
    color: #fff;
    font-size: 18px;
    margin-left: 10%;
    text-shadow: 3px 3px 5px #000;
    z-index: 20;
}
section.visual .txt h3 {
    margin: 30px 0;
    font-size: 64px;
    font-weight: 700;
    line-height: 1.3;
}

main {
    background: #1b1b1b;
    color: #fff;
    padding: 120px 0;
}

/* main-text style */
main .main-text {
    /*background: orange;*/
    width: 80%;
    margin: 0 auto 100px;
    font-size: 27px;
    display: flex;
    position: relative;
}

/*
    소스코드에는 나타나지 않는 가상의 자식요소
    before: 가상의 첫째자식
    after: 가상의 막내자식

    필수 속성: content속성과 display속성이 필요함
*/
main .main-text::before {
    /* <div>안녕</div> */
    content: '';
    display: block;
    width: 100px;
    height: 100px;
    background: #ffec03;
    border-radius: 50%;
    position: absolute;
    top: 100px;
    left: 70px;
}
main .main-text::after {
    content: '”';
    font-size: 300px;
    position: absolute;
    left: 0;
    top: 100px;
}

main .main-text h3 {
    /*border: 4px solid red;*/
    flex: 1;
    font-weight: 700;
}
main .main-text p {
    /*border: 4px solid blue;*/
    flex: 2;
    font-size: 25px;
    line-height: 1.4;
}
main .main-text p span {
    display: block;
    margin-top: 30px;
    color: #999;
    font-size: 22px;
}

/* project style */
main .project {
    /*background: tomato;*/
    margin-top: 200px;
    margin-bottom: 60px;
}
main .project .top {
    /*border: 4px solid blue;*/
    width: 80%;
    margin: 0 auto 60px;
    display: flex;
    justify-content: space-between;
}
main .project .top h3 {
    /*background: aqua;*/
    font-size: 38px;
    font-weight: 700;
}
main .project .top a {
    /*background: violet;*/
    font-size: 20px;
}
main .project .bottom {
    /*border: 4px solid green;*/
    display: flex;
    justify-content: space-evenly;
}
main .project .bottom li {
    border: 4px solid #fff;
    width: 24%;
    height: 400px;
    overflow: hidden;
    position: relative;
}
main .project .bottom li a::before {
    content: '';
    width: 0;
    height: 100%;
    background: rgba(0,0,0, 0.6);
    position: absolute;
    left: 0;
    top: 0;
    transition: .7s;
}
main .project .bottom li a:hover::before {
    width: 100%;
}
main .project .bottom li a img {
    width: 100%;
}
main .project .bottom li a .name {
    position: absolute;
    right: 10px;
    bottom: 10px;

    background: #1b1b1b;
    font-size: 24px;
    text-align: right;
    width: 250px;
    padding: 15px;

    opacity: 0;
}
main .project .bottom li a:hover .name {
    animation: show-name 1s both;
}
@keyframes show-name {
    from {
        opacity: 0;
        bottom: -30px;
    }
    to {
        opacity: 1;
        bottom: 10px;
    }
}

/* partners style */
main .partners {
    /*background: orange;*/
    width: 80%;
    margin: 170px auto 100px;
}
main .partners h3 {
    font-size: 19px;
    margin-bottom: 80px;
}
main .partners ul {
    /*border: 4px solid greenyellow;*/
    display: flex;
    flex-wrap: wrap;
}
main .partners ul li {
    /*background: orangered;*/
    /*border: 3px solid skyblue;*/
    width: 25%;
    margin-bottom: 80px;
    display: flex;
    justify-content: center;
    align-items: center;
}
main .partners ul li img {
    opacity: 0.3;
    transition: .4s;
}
main .partners ul li img:hover {
    opacity: 1;
}

/* contact style */
main .contact {
    width: 90%;
    background: url("../img/contact.jpg")
        no-repeat center/cover fixed;
    padding: 220px 0;
}
main .contact .inner {
    width: 70%;
    margin: 0 auto;
    font-size: 19px;
    line-height: 1.4;
}
main .contact .inner .tel {
    font-size: 58px;
    font-weight: 700;
    margin: 50px 0;
}


/* footer */
footer {
    background: #1b1b1b;
    color: #999;
    padding: 0 80px 80px;
}
footer ul {
    display: flex;
    justify-content: space-around;
    align-items: center;
}
footer ul li:nth-child(2) {
    color: #eee;
    font-size: 16px;
    line-height: 2;
}
footer ul li:nth-child(2) span {
    font-weight: 700;
    margin-right: 10px;
    color: #999;
}

#go-top {
    position: fixed;
    right: 50px;
    bottom: 60px;
    color: #fff;
    font-size: 52px;
}

/* 큰 태블릿 반응형 디자인 */
/*  1025px 미만 */
@media (max-width: 1024px) {
    section.visual {
        height: 60vh;
    }
    header .gnb {
        width: 80vw;
        justify-content: center;
    }
    section.visual .txt {
        font-size: 24px;
    }
    main .main-text {
        flex-direction: column;
        align-items: center;
        padding-bottom: 100px;
    }
    main .main-text::before
    , main .main-text::after
    {
        display: none;
    }
    main .main-text p {
        margin-top: 100px;
        width: 60%;
        text-align: justify;
    }

    main .main-text p span {
        text-align: center;
    }
    main .project .bottom {
        flex-wrap: wrap;
    }
    main .project .bottom li {
        width: 45%;
        margin-bottom: 30px;
    }
}


/* 작은 휴대폰 반응형 디자인 */
/* 375px이하 */
@media (max-width: 375px) {

    body {
        width: 100vw;
    }
    header {
        padding: 15px;
    }
    header .intro,
    header .menu-open .menu-txt,
    section.content .partners,
    section.content .contact
    {
        display: none;
    }
    header .logo img {
        height: 40px;
    }
    section.visual .txt {
        font-size: 14px;
    }
    section.visual .txt h3 {
        font-size: 20px;
    }
    main {
        padding: 50px 0;
    }
    main .main-text {
        flex-direction: column;
        margin-bottom: 50px;
        text-align: center;
    }
    main .main-text h3 {
        margin-right: 0;
        margin-bottom: 20px;
    }
    main .main-text p {
        text-align: justify;
    }
    main .main-text p span {
        font-size: 15px;
    }
    main .project {
        margin-top: 50px;
    }
    main .project .top {
        flex-direction: column;
        text-align: center;
        margin-bottom: 30px;
    }
    main .project .top h3 {
        font-size: 20px;
    }
    main .project .top h3 br {
        display: none;
    }
    main .project .top a {
        font-size: 14px;
        margin-top: 10px;
    }
    main .project .bottom {
        flex-direction: column;
    }
    main .project .bottom li {
        width: 90%;
        height: 250px;
        margin: 0 auto 20px;
    }
}