@import url('https://fonts.googleapis.com/css2?family=Fjalla+One&family=Noto+Sans+TC:wght@100;400&family=Roboto:wght@100;300;400&display=swap');
*{
    margin: 0; 
    padding: 0;
    list-style: none;
    text-decoration: none;
    box-sizing: border-box;
    font-family: 'Noto Sans TC', sans-serif;
    /* font-family: 'Roboto', sans-serif; */
}


body {
    height: 100vh;
    line-height: 1.6;
    opacity: 0;
    -webkit-transition: opacity .4s ease-in;
    transition: opacity 1s ease-in;
    font-size: 15px;
    background-color: #f5f5f5;
}

body.show {
    opacity: 1;
    -webkit-transition: opacity .4s ease-in;
    transition: opacity 1s ease-in;
}

/* --------header--------- */

@media (min-width: 900px) {
    header{
        display: block;
        position: fixed;
        width: 70px;
        height: 100vh;
        left: 0;
        top: 0;
        z-index: 4;
        background-color: #555555;
        box-shadow: 5px 0px 20px rgb(40, 40, 40, .7);
        /* overflow: auto; */
    }
    
    header nav li {
        float: left;
    }
    
    header #social {
        line-height: 70px;
        justify-content: center;
        align-items: center;
    }
    
    header #social a {
        font-size: 2rem;
        color: #fff;
        
    }
    
    header nav {
        width: 100vh;
        position: absolute;
        height: 70px;
        margin-left: 70px;
        transform: rotate(-90deg);
        transform-origin: left bottom;
        display: flex;
        justify-content: center;
    }
    header nav a {
        color: #fff;
        font-size: .9rem;
        padding: 0px 25px;
        height: 70px;
        line-height: 70px;
        display: block;
        text-transform: uppercase;
        transition: .3s;
    }
    
    main {
        margin-left: 70px;
        margin-top: 200px;
    }
}


@media (max-width: 900px) {
    header {
        width: calc(100% - 70px);
        height: 70px;
        position: fixed;
        background-color: #555555;
        z-index: 1;
    }
    .bars::before {
        font-family: "Font Awesome 6 Free"; 
        font-weight: 900;
        content: "\f0c9";
    }

    .bars {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 70px;
        height: 70px;
        position: fixed;
        right: 0;
        font-size: 2rem;
        background-color: rgba(255, 255, 255, 1);
        color: #555555;
        z-index: 3;
    }

    .flex-menu {
        position: fixed;
        width: 100vw;
        height: auto;
        margin-top: 70px;
        top: 0;
        background-color: rgba(245,245,245,.9);
        transition: .5s;
        box-shadow: 0px -2px 15px 1px rgba(85,85,85,.2);
        text-align: center;
        display: none;
        z-index: 4;
    }

    header nav a {
        color: #555555;
        font-size: 2rem;
        margin: 25px;
        padding: 20px 0;
        line-height: 10px;
        display: block;
        text-transform: uppercase;
        transition: .3s;
        font-weight: 900;
    }

    header .social a {
        font-size: 3rem;
    }
}

header #social a:hover,
    header nav a:hover {
        color: #f19371;
    }


/* --------logoArea--------- */
@media (min-width: 900px) {
    .logoArea {
        width: calc(100% - 70px);
        position: fixed;
        left: 70px;
        top: 0;
        z-index: 1;
        background-color: #f5f5f5;
    }
    
    .logoArea .content {
        width: 100%;
        height: 220px;
        padding: 25px 50px;
        display: flex;
        position: relative;
        color: #555555;
        justify-content: center;
        align-items: center;
        border-bottom: 2px dashed #555555;
    }
    
    .logoArea h2{
        position: absolute;
        left: 50px;
        top: 25px;
        font-family: 'Fjalla One', sans-serif;
        font-weight: 500;
        font-size: 2.5rem;
        line-height: 3.5rem;
    }
    
    .logoArea h3 {
        font-family: 'Fjalla One', sans-serif;
        font-weight: 500;
        font-size: 2.5rem;
        line-height: 3.5rem;
        border: 2px solid #555555;
        padding: 3px 18px;
        border-radius: 10px;
    }
}

@media (max-width: 900px) {
    .logoArea {
        width: 100%;
        height: auto;
        position: fixed;
        top: 70px;
        background-color: #f5f5f5;
        z-index: 1;
    }
    
    .logoArea .content {
        width: 100%;
        height: 220px;
        display: flex;
        position: relative;
        color: #555555;
        justify-content: center;
        align-items: center;
        border-bottom: 2px dashed #555555;
    }
    
    .logoArea h2{
        position: absolute;
        left: 25px;
        top: 25px;
        font-family: 'Fjalla One', sans-serif;
        font-weight: 500;
        font-size: 2.5rem;
        line-height: 3.5rem;
    }

    .logoArea h3 {
        font-family: 'Fjalla One', sans-serif;
        font-weight: 500;
        font-size: 2rem;
        line-height: 3.5rem;
        border: 2px solid #555555;
        padding: 1px 10px;
        border-radius: 10px;
    }
}



/* --------logoArea--------- */

/* --------projectsArea--------- */

@media (min-width: 900px) {
    .projectsArea {
        width: calc(100%-70px);
        display: flex;
        position: relative;
        padding: 25px;
        box-sizing: border-box;
        justify-content: center;
        align-items: flex-start;
        flex-wrap: wrap;
    }
    
    .projectsArea .item {
        position: relative;
        overflow: hidden;
        width: 23%;
        padding: 2%;
    }
}


@media (max-width: 900px) {
    .projectsArea {
        width: 100%;
        top:290px;
        display: flex;
        position: relative;
        padding: 2%;
        box-sizing: border-box;
        justify-content: center;
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .projectsArea .item {
        position: relative;
        width: 46%;
        margin: 2%;
        padding-bottom: 30px;
        z-index: 0;
    }  
}

.projectsArea .item .square {
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    border-radius: 10px;
}

.item img{
    width: 100%;
    height: 100%;
    object-fit:cover;
    transition: .3s;
}

.item:hover img{
    transform: scale(1.3);
}

.item h6 {
    display: flex;
    justify-content: center;
    margin-top: 10px;
    color: #555555;
    font-weight: 400;
    font-size: .3rem;
    letter-spacing: .1rem;
}
.item h3 {
    display: flex;
    justify-content: center;
    color: #555555;
    font-weight: 400;
    font-size: .9rem;
    letter-spacing: .1rem;
}



/* --------projectsArea--------- */

/* --------footer--------- */
footer {
    display: block;
    position: fixed;
    background-color: #f5f5f5;
    margin-left: 70px;
    height: 30px;
    width: 100%;
    right: 0;
    bottom: 0;
}

#copyright {
    display: flex;
    position: absolute;
    color: #555555;
    font-weight: 100;
    font-size: .3vw;
    right: 5px; 
    bottom: 0px;
    line-height: 30px;
    letter-spacing: .1vw;
}

.goBack::before {
    font-family: "Font Awesome 6 Free"; 
	font-weight: 900;
	content: "\f100";
    margin: 0 10px;
}