:root{
    /*========= GREEN THEME============ */
    --color-primary: #ff7b02;
    --color-primary-variant: #e5a55d;
    --color-bg-1: #000e17;
    --color-bg-2: #001e2b;
    --color-bg-3: #012734;
    --color-bg-4: #003347;
    --color-light: #85a2b2;
    --color-white: hsl(0, 0%, 90%);
    --container-width-lg: 88%;
    --container-width-md: 92%;
    --transition: all 400ms ease ;
}
*{
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    list-style: none;
    text-decoration: none;
    box-sizing: border-box;
}

::-webkit-scrollbar{
    width: 0.5rem;
    background: rgba(229, 165, 93, 0.2);
}
::-webkit-scrollbar-thumb{
    width: 100%;
    background: var(--color-primary-variant);
    border-radius: 0.25rem;
}
html{
    scroll-behavior: smooth;
}
body{
    font-family: 'Montserrat', sans-serif;
    background: var(--color-bg-3) url(./images/bg-texture.png);
    color: var(--color-light);
    line-height: 1.7;
}
h1, h2{
    line-height: 1.1;
    font-weight: 400;
}
h1{
    font-size: 4rem;
    color: var(--color-white);
}
h2{
    font-weight: 3.5rem;
}
a{
    color: var(--color-light);
    transition: var(--transition);
}
a:hover{
    color: var(--color-primary);
}
.container{
    width: var(--container-width-lg);
    margin: 0 auto;
    max-width: 2160px;
}
img{
    display: block;
    object-fit: cover;
    width: 100%;
}

/* ==========================================NAV========================== */

nav{
    height: 5rem;
    width: 100%;
    display: grid;
    place-items: center;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 99;
}

/* nav class on scroll using javascript */
.window-scrolled{
    background: var(--color-bg-2);
    border-bottom: 0.2rem var(--color-bg-3);
    box-shadow: 0 1rem 1rem rgba(0, 0, 0, 0.3);
}
.nav_container{
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Only need a tablets and phone */
.nav_toggle-btn{
    display: none;
    /* overflow: hidden; */
}
.nav_logo{
    width: 7.5rem;
}
.nav_links{
    display: flex;
    gap: 4rem;

}
.nav_socials{
    display: flex;
    gap: 1rem;
}
.nav_socials a{
    width: 2rem;
    height: 2rem;
    background: linear-gradient(var(--color-primary-variant), var(--color-primary));
    display: grid;
    border-radius: 0.4rem;
    color: var(--color-bg-4);
    place-items: center;
}
.nav_socials a:hover{
    box-shadow: 0 1rem 1rem rgba(0, 0, 0, 0.4);
}


/* ==========================================HEADER========================== */

header{
    max-width: 100vw;
    height: 110vh;
    position: relative;
    top: 0;
    background: linear-gradient(var(--color-bg-3), var(--color-bg-1));
    overflow: hidden;
}
.header_title{
    color: var(--color-light);
}
.header-container{
    display: grid;
    grid-template-columns: 42% 52%;
    gap: 4%;
    margin-top: 10rem;
    position: relative;
}
.header_image-bg{
    background: var(--color-bg-4);
    height: 22rem;
    width: 16rem;
    position: absolute;
}
.header_image-lg{
    width: 29rem;
    height: 30rem;
    position: relative;
    top: 1rem;
    left: 1rem;
    filter: saturate(0) brightness(0.3);
    transition: var(--transition);
}
.header_image-sm{
    width: 26rem;
    height: 28rem;
    overflow: hidden;
    position: absolute;
    left: 6rem;
    top: 6rem;
    transition: var(--transition);
    
}
.header_left:hover .header_image-sm{
    opacity: 0;
}
.header_left:hover .header_image-lg{
    filter: saturate(1) brightness(1);
    border: 1rem solid var(--color-bg-3);
    top: 0;
    left: 0;
}
.header_head{
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

/* General empty style */
.empty{
    height: 3.5rem;
    width: 18rem;
    background: var(--color-bg-2);
    border-radius: calc(3.5rem / 2);
    margin-bottom: 3.5rem;
    box-shadow: inset 0 1rem 1rem rgba(0, 0, 0, 0.3);
    border: 1px solid var(--color-bg-4);
}
.header_tag{
    color: var(--color-primary-variant);
}
.header_right p{
    margin-top: 2rem;
    width: 85%;
}
/* only show on tablet and phone */

.header_btn-md{
    display: none;
}

/*====================================HEADER FRAMES========================*/
.header_frames{
    position: absolute;
    top: 95vh;
    right: 46rem;
    transition: var(--transition);
}
.header_frame{
    width: 14rem;
    border: 0.4rem solid var(--color-bg-3);
    box-shadow: 0 0 4rem rgba(0, 0, 0, 0,5);
    position: absolute;
    transform: rotate(-10deg);
    transform-origin:bottom left;
    transition: var(--transition);
}
.header_frame:nth-child(2){
    transform: rotate(20deg);
    top: -2rem;
    left: 2rem;
}
.header_frames:hover .header_frame{
    transform: rotate(0);
}
.header_frames:hover .header_frame:nth-child(2){
    top: 0;
    left: 15rem;
}

/* general style for contact buttons */
.contact_btn{
    color: var(--color-bg-1);
    height: 10rem;
    width: 10rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    cursor: pointer;transition: var(--transition);
}
.header_btn{
    background: linear-gradient(-30deg, var(--color-primary-variant), var(--color-primary), var(--color-primary-variant));
    position: absolute;
    right: 6%;
    bottom: -8rem;
}
.header_btn:hover{
    box-shadow: 0 2rem 2rem rgba(0, 0, 0, 0.3);
    transform: translateY(-1rem);
    color: var(--color-bg-1);
}
.contact_btn i{
    font-size: 3.5rem;
    position: absolute;
}
.contact_btn p{
    font-size: 1rem;
    font-weight: 600;
    width: 10rem;
    height: 10rem;
    display: flex;
    justify-content: center;
    animation: spinText 30s linear infinite ;
}
.contact_btn p span{
    position: absolute;
    transform-origin: 0.3rem 5rem;
}
@keyframes spinText{
    to{
        transform: rotate(360deg);
    }
}

/*====================================ABOUT========================*/
#about{
    margin-top: 18rem;
}
.about_container{
    display: grid;
    grid-template-columns: 10rem 26rem auto;
    gap: 3rem;position: relative;
}
.about_title{
    position: absolute;
    color: var(--color-light);
    top: -7rem;
    z-index: 1;
}
.about_btn{
    color: var(--color-primary-variant);
    align-self: end;
}
.about_btn:hover{
    transform: translateY(-1rem);
    color: var(--color-primary);
}
.about_image{
    position: relative;
}
.about_image-bg{
    width: 16rem;
    height: 24rem;
    position: absolute;
    bottom: 0;
    background: var(--color-bg-4);
}
.about_image-lg{
    position: relative;
    left: 1rem;
    bottom: 1rem;
    filter: saturate(0) brightness(0.3);
    transition: 500ms ease;
}
.about_image-sm{
    position: absolute;
    height: 22rem;
    width: 22rem;
    left: 8rem;
    top: 3rem;
    overflow: hidden;
    box-shadow: 2rem 2rem 2rem rgba(0, 0, 0, 0.2);
    transition: 500ms ease;
}
.about_image:hover .about_image-sm{
    opacity: 0;
}
.about_image:hover .about_image-lg{
    filter: saturate(1) brightness(1);
    box-shadow: 0 3rem 3rem rgba(0, 0, 0, 0.2);
    border: 1rem solid var(--color-bg-4);
    left: 0;
    bottom: 0;
}
.about_right{
    margin-left: 5rem;
}
.about_right p{
    margin: 0 4rem 1.5rem 0;
}


/*====================================Gallary========================*/

#gallary{
    margin-top: 12rem;
}
.gallary_title{
    color: var(--color-light);
}
.gallary_head{
    display: flex;
    justify-content: space-between;
}
.gallary_container p{
    width: 45rem;
}
.swiper-wrapper{
    margin-top: 5rem;
    height: 37rem;padding-bottom: 5rem;
}
.swiper-slide{
    border: 0.5rem solid var(--color-bg-4);
    height: fit-content;
    max-height: 36rem;
    overflow: hidden;
    transition: var(--transition);
}
.swiper-slide:hover{
    box-shadow: 0 3rem 3rem rgba(0, 0, 0, 0.4);
}
.swiper-slide img{
    filter: saturate(0);
    transition: var(--transition);
}
.swiper-slide:hover img{
    filter: brightness(1);
}
.swiper-pagination-bullet{
    background: var(--color-primary);
}

/*====================================EXHIBITIONS========================*/

#exhibitions{
    margin-top: 10rem;
}
.exhibitions_title{
    color: var(--color-light);
}
.exhibitions_container{
    position: relative;
}
.exhibitions_empty{
    width: 26rem;
    position: absolute;
    right: 14rem;
    top: 0;
}
.exhibitions_head{
    display: grid;
    grid-template-columns: auto 10rem;
    justify-content: space-between;
    align-items: center;
}
.exhibitions_head > p{
    width: 45rem;
}
.exhibitions_btn{
    color: var(--color-primary-variant);
}
.exhibitions_btn:hover{
    transform: translateY(-1rem);
}
.exhibitios_gallary{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 5rem;
    gap: 3rem;
}
.exhibitios_gallary article{
    border: 0.5rem solid var(--color-bg-4);
    transition: var(--transition);
}

.exhibitios_gallary article:nth-child(1){
    grid-row: 1/3;
}
.exhibitios_gallary article:nth-child(4){
    grid-column: 2/4;
    grid-row: 2/3;
}
.exhibitios_gallary article img{
    height: 100%;
    filter: saturate(0);
    transition: var(--transition);
}
.exhibitios_gallary article:hover img{
    filter: saturate(1);
}
.exhibitios_gallary article:hover{
    box-shadow: 0 4rem 4rem rgba(0, 0, 0, 0.5);
}

/*====================================END OF EXHIBITIONS========================*/

/*====================================FOOTER========================*/

footer{
    margin-top: 7rem;
}
.footer_title{
    color: var(--color-light);
}
.footer_container{
    border-top: 0.5rem solid var(--color-bg-4);
    padding-top: 5rem;
}
.footer_head{
    display: flex;
    align-items: center;
    gap: 2rem;
}
.footer_btn{
    width: 5rem;
    height: 5rem;
    border: 0.2rem solid var(--color-primary-variant);
    border-radius: 50%;
    font-size: 3rem;
    color: var(--color-primary-variant);
    display: flex;
    justify-content: center;
    align-items: center;
    transform: var(--transition);
}
.footer_btn:hover{
    transform: translateY(-1rem);
    border-color: var(--color-primary);
}
.footer_links{
    margin: 3rem 0 5rem;
    display: flex;
    align-items: center;
    gap: 5rem;

}


/*=================================================MEADIA QUERIES (mediun screens)======================================= */

@media screen and (max-width: 1024px){
    .nav_container{
        width: var(--container-width-md);
        position: relative;
    }
    h1{
        font-size: 2.5rem;
        line-height: 1.3;
    }
    h2{
        font-size: 2.5rem;
    }
  


    /* =========NAV========== */

    .nav_socials{
        display: none;
    }
    .nav_links{
        position: absolute;
        top: 100%;
        right: 0;
        flex-direction: column;
        gap: 0;
        display: none;
    }
    .nav_links li{
        height: 5rem;
        box-shadow: -3rem 3rem 3rem rgba(0, 0, 0, 0.7);
        animation: navAnimation 600ms ease forwards;
        transform: rotateX(90deg);
        opacity: 0;
        transform-origin: top;
    }
    .nav_links li:nth-child(2){
        animation-delay: 200ms;
    }
    .nav_links li:nth-child(3){
        animation-delay: 400ms;
    }
    .nav_links li:nth-child(4){
        animation-delay: 600ms;
    }
    @keyframes navAnimation {
        to{
            transform: rotate(0);
            opacity: 1;
        }
    }
   
    .nav_links li a{
        background: var(--color-bg-4);
        height: 100%;
        width: 100%;
        display: flex;
        align-items: center;
        padding: 1rem 5rem 1rem 3rem;
        border-top: 1px solid var(--color-bg-2);
    }
    .nav_toggle-btn{
        display: inline-block;
        font-size: 2rem;
        background: transparent;
        color: var(--color-white);
    }
    #nav_toggle-close{
        display: none;
    }
    /* =========HEADER========== */

    header{
        height: fit-content;
        padding: 12rem 0 10rem;
        display: grid;
        place-items: center;
    }
    .header_image-bg, .header_image-sm{
        display: none;
    }
    .header-container{
        grid-template-columns: 40% 54%;
        gap: 6rem;
        margin: 0;
    }
    .header_image-lg{
        filter: saturate(1) brightness(1);
        border: 1rem solid var(--color-bg-2);
        border-radius: 15rem 15rem 0 0;
        overflow: hidden;
        height: fit-content;
        width: 100%;
        top: 0;
        left: 0;

    }

    .empty{
        display: none;
    }
    .header_tag{
        margin-bottom: 1rem;
    }
    .header_right p{
        width: 100%;
        margin-top: 1.5rem;
    }
    .header_frames, .contact_btn{
        display: none;
    }
    .header_btn-md{
        background: linear-gradient(135deg, var(--color-primary-variant), var(--color-primary));
        color: var(--color-bg-1);
        margin-top: 2rem;
        display: inline-block;
        padding: 0.6rem 1.6rem;
        font-weight: 600;
        border-radius: 0,3rem;
    }
    .header_btn-md:hover{
        color: var(--color-bg-1);
    }

    /* =========HEADER========== */
    .about_container{
        grid-template-columns: 40% 54%;
        gap: 6%;
    }
    .about_image-bg, .about_image-sm{
        display: none;
    }
    .about_image-lg{
        left: 0;
        top: 0;
        filter: saturate(1) brightness(1);
    }
    .about_image:hover .about_image-lg{
        border: none;
    }
    .about_right{
        margin: 0;
    }
    .about_right p{
        margin: 1rem;
    }

    /* =========Gallary========== */

    #gallary{
        margin-top: 8rem;
    }
    .gallary_container p{
        width: 100%;
        margin-top: 2rem;
    }
    .swiper-wrapper{
        margin-top: 4rem;
        height: fit-content;
    }

    /* =========Exhibitions========== */

    .exhibitions_head > p{
        width: 100%;
        margin-top: 2rem;
    }
    .exhibitios_gallary{
        margin-top: 2rem;
        gap: 1rem;
    }
    .exhibitios_gallary article{
        border: none;
    }

}

/*=================================================MEADIA QUERIES (small screens)======================================= */

@media screen and (max-width: 600px){
    h1, h2{
        font-size: 2rem;
        line-height: 1.3;
        color: var(--color-white);
    }
    header{
        /* margin-top: 1rem; */
        padding: 0;
        padding-bottom: 6rem;
    }
    .header-container{
        grid-template-columns: 1fr;
        gap: 1rem;
        text-align: center;
    }
    .header_image-lg{
        width: 80%;
        height: 20rem;
        margin: 0 auto;
        margin-top: 7rem;
    }
    .header_head{
        justify-content: center;
        margin-top: 5rem;
    }
    .header_right p{
        margin-top: 1rem;
    }
    .header_title{
        margin-top: 1rem;
    }

    /* =========================ABOUT====================== */

    .about_container{
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .about_right p{
        width: 100%;
    }
    .swiper-slide{
        border: 0;
    }

    /* =========================GALLARY====================== */

    #gallary{
        margin-top: 6rem;
    }
    .gallary_container p{
        margin-top: 1rem;
    }
    .swiper-wrapper{
        margin-top: 3rem;
    }

    /* =========================Exhibitions====================== */

    #exhibitions{
        margin-top: 6rem;
    }
    .exhibitions_head{
        grid-template-columns: 1fr;
    }
    .exhibitions_head > p{
        margin-top: 1rem;
    }
    .exhibitios_gallary{
        display: block;
    }
    .exhibitios_gallary article{
        width: 100%;
        height: fit-content;
        margin-bottom: 1rem;
    }
    /* =========================Footer====================== */

    .footer_head{
        flex-direction: column;
    }
    .footer_head h1{
        font-size: 1.5rem;
    }
    .footer_links{
        flex-direction: column;
        gap: 2rem;
        margin-top: 5rem;
    }



}