:root {
    --color-primary: #ff7b02;
    /* ============ Green Theme ============ */
    --color-primary: #ff7b02;
    --color-primary-variant: #e5a55d;
    --color-bg-1: #000e17;
    --color-bg-2: #001e2d;
    --color-bg-3: #012734;
    --color-bg-4: #003347;
    --color-light: #85a2b2;
    --color-white: hsl(0, 0%, 90%);

    /* ============ Purple Theme ============ */
    /* --color-primary: #ff7b02;
    --color-primary-variant: #e5a55d;
    --color-bg-1: #140021;
    --color-bg-2: #1e0032;
    --color-bg-3: #25003e;
    --color-bg-4: #36005a;
    --color-light: #d0b8e0;
    --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: rgb(229, 165, 93, 0.2);
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg-3);
    font-family:Arial, Helvetica, sans-serif;
    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-size: 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%;
}

hr {
    background: var(--color-light);
    height: 2px;
    margin-top: 16rem;
}

/* ==================== NavBar =================== */

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

.window-scrolled {
    background: var(--color-bg-2);
    border-bottom: 0.2rem solid var(--color-bg-3);
    box-shadow: 0 1rem 1rem rgba(0, 0, 0, 0.5);
}

.nav__container {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__toggle-btn {
    display: none;
}

.nav__logo {
    width: 7.5rem;
}

.nav__links {
    display: flex;
    gap: 4rem;
}

.nav__socials {
    display: flex;
    gap: 1rem;
}

.nav__socials a {
    display: grid;
    width: 2rem;
    height: 2rem;
    background: linear-gradient(var(--color-primary-variant), var(--color-primary));
    border-radius: 0.5rem;
    color: var(--color-bg-4);
    place-items: center;
}

.nav__socials a:hover {
    box-shadow: 0 1rem 1rem rgba(0, 0, 0, 0.5);
}

.socials {
    display: none;
}


/* ==================== Header =================== */

header {
    max-width: 100vw;
    height: 100vh;
    position: relative;
    top: 0;
    background: linear-gradient(var(--color-bg-3), var(--color-bg-1));
    overflow: hidden;
} 

.header__container {
    display: grid;
    grid-template-columns: 43% 53%;
    gap: 4%;
    margin-top: 10rem;
    position: relative;
}

.header__image-bg {
    background: var(--color-bg-4);
    height: 20rem;
    width: 17rem;
    position: absolute;
}

.header__image-lg {
    width: 29rem;
    position: relative;
    top: 1rem;
    left: 1rem;
    filter: saturate(0) brightness(0.3);
}

.header__image-sm {
    width: 28rem;
    height: 28rem;
    overflow: hidden;
    position: absolute;
    left: 3rem;
    top: 6rem;
    transition: var(--transition);
}

.header__left:hover .header__image-sm {
    opacity: 0;
    transition: all 400ms ease-in-out;
}

.header__left:hover .header__image-lg {
    filter: saturate(1) brightness(1);
    border: 1rem solid var(--color-bg-3);
    top: 0;
    left: 0;
    transition: all 400ms ease-in-out;
}


.header__head {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.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%;
}


/* Show only on tablets and phone */
.header__btn-md {
    display: none;
}

.header__frames {
    position: absolute;
    top: 88vh;
    right: 41rem;
    transition: all 400ms ease-in-out;
    margin-left: 0.5rem;
}

.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: all 400ms ease-in-out;
}

.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 button */
.contact__btn {
    color: var(--color-bg-1);
    width: 8rem;
    height: 8rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: all 400ms ease-in-out;
}

.header__btn {
    background: linear-gradient(-30deg, var(--color-primary-variant), var(--color-primary), var(--color-primary-variant));
    position: absolute;
    right: 6%;
    bottom: -3rem;
}

.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: 2rem;
    position: absolute;
}

.contact__btn p {
    font-size: 1rem;
    font-weight: 600;
    width: 8rem;
    height: 8rem;
    display: flex;
    justify-content: center;
    animation: spinText 30s linear infinite;
}

.contact__btn p span {
    position: absolute;
    transform-origin: 0.3rem 4rem;
}

@keyframes spinText {
    to {
        transform: rotate(360deg);
    }
}


/* ==================== About =================== */
#about {
    margin-top: 10rem;
}

.about__container {
    display: grid;
    grid-template-columns: 10rem 26rem auto;
    gap: 3rem;
    position: relative;
}

.about__title {
    position: absolute;
    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;
    margin-top: 2rem;
}

.about__image-bg {
    width: 24rem;
    height: 33rem;
    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;
    top: 3rem;
    left: 5rem;
    height: 29rem;
    width: 22rem;
    overflow: hidden;
    box-shadow: 1rem 1rem rgba(0, 0, 0, 0.2);
    transition: all 400ms ease-in-out;
}

.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: rem;
}

.about__right p {
    margin: 0 4rem 1.5rem 0;
}

/* ==================== Gallery =================== */

#gallery {
    margin-top: 12rem;
}

.gallery__head {
    display: flex;
    justify-content: space-between;
}

.gallery__container p {
    width: 45rem;
}

.swiper-wrapper {
    margin-top: 5rem;
    height: 37rem;
    padding-bottom: rem;
}

.swiper-slide {
    border: .5rem solid var(--color-bg-4);
    height: fit-content;
    max-height: 30rem;
    overflow: hidden;
    transition: all 400ms ease-in-out;
}

.swiper-slide:hover {
    box-shadow: 0 3rem 3rem rgba(0, 0, 0, 0.4);
}

.swiper-pagination-bullet {
    background: var(--color-primary);
    height: 1rem;
    width: 1rem;
}

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

#exhibitions {
    margin-top: 8rem;
}

.exhibitions__container {
    position: relative;
}

.exhibitions__empty {
    width: 26rem;
    position: absolute;
    right: 14rem;
    top: 0;
}

.exhibition__head {
    display: grid;
    grid-template-columns: auto 10rem;
    justify-content: space-between;
    align-items: center;
}

.exhibition__head > p {
    width: 45rem;
}

.exhibitions__btn {
    color: var(--color-primary-variant);
}

.exhibitions__btn:hover {
    transform: translateY(-1rem);
}

.exhibitions__gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 5rem;
    gap: 3rem;
}
.exhibitions__gallery article {
    border: 0.5rem solid var(--color-bg-4);
    transition: all 400ms ease-in-out;
}

.exhibitions__gallery article:nth-child(1) {
    grid-row: 1/3;
    width: 25rem;
}

.exhibitions__gallery article:nth-child(4) {
    grid-column: 2/4;
    grid-row: 2/3;
}

.exhibitions__gallery article img {
    height: 100%;
    transition: all 400ms ease-in-out;
}

.exhibitions__gallery article:hover img {
    scale: 1.3;
}

/* ==================== Footer =================== */

footer {
    margin-top: 7rem;
    margin-bottom: 2rem;
}

.footer__head h2 {
    color: var(--color-primary);
}

.footer__container {
    border-top: 0.5rem solid var(--color-bg-4);
    padding-top: 5rem;
}
.footer__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    /* 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;
    transition: all 400ms ease-in-out;
}

.footer__btn:hover {
    transform: translateY(-1rem);
    border-color: var(--color-primary);
}

.footer__links {
    margin: 3rem 0 5rem;
    display: flex;
    gap: 1rem;
}

/* ==================== Media Queries (medium screen) =================== */

@media screen and (max-width: 1024px) {
    .container {
        width: var(--container-width-md);
        position: relative;
    }

    h1 {
        font-size: 2.5rem;
        line-height: 1.3;
    }

    h2 {
        font-size: 2.5rem;
    }

    /* ===================== Nav ====================*/

    nav .nav__logo {
        position: fixed;
        display: grid;
        justify-content: start;
        left: 5rem;
    }

    nav .nav__toggle-btn {
        position: fixed;
        display: grid;
        justify-content: start;
        right: 8rem;
    }

    nav .nav__links {
        left: 15rem;
    }

    nav .nav__links ul li {
        width: 4rem;
    }

    

    .nav__links {
        position: absolute;
        top: 100%;
        flex-direction: column;
        gap: 0;
        display: none;
        perspective: 400px;
    }

    .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: rotateX(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;
        cursor: pointer;
        color: var(--color-white);
        right: 0;
    }

    #nav__toggle-close {
        display: none;
    }

        /* ===================== Header ====================*/

    header {
        height: fit-content;
        padding: 14rem 0 12rem;
        display: grid;
        place-items: center;
    }

    .header__image-bg, .header__image-sm {
        display: none;
    }
    .header__container {
        grid-template-columns: 40% 54%;
        gap: 6%;
        margin: 0;
    }

    .header__image-lg {
        filter: saturate(1) brightness(1);
        border: 1rem solid var(--color-bg-2);
        width: 100%;
        top: 0;
        left: 0;
    }

    .empty {
        display: none;
    }

    .header__tag {
        margin-bottom: 1rem;
    }

    .header__right p {
        width: 100%;
    }

    .header__frames, .contact__btn {
        display: none;
    }

    .header__frames {
        top: 70vh;
        right: 32rem;
    }

    .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;
        text-align: center;
    }

    .header__btn-md:hover {
        color: var(--color-bg-1);
    }

    hr {
        display: none;
    }

                
    /* ===================== Header ====================*/
    
    #about {
        padding: 2rem;
    }

    .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: 0;
        margin-top: 5rem;

    }

    

    /* ===================== Header ====================*/

    #gallery {
        margin-top: 8rem;
        padding: 2rem;
    }

    .gallery__container p {
        width: 100%;
        margin-top: 2rem;
    }

    .swiper-wrapper {
        margin-top: 5rem;
        height: 34rem;
    }

    /* ===================== Header ====================*/
    
    #exhibitions {
        padding: 2rem;
    }

    .exhibition__head > p {
        width: 100%;
        margin-top: 2rem;
    }

    .exhibitions__gallery {
        margin-top: 3rem;
        gap: 1rem;
    }
    
    .exhibitions__gallery article {
        border: none;
    }

    .socials {
        display: none;
    }

    footer {
        margin-top: 1rem;
        padding: 2rem;
    }

    .footer__head {
        gap: 2rem;
    }

    .footer__btn {
        width: 4rem;
        height: 4rem;
        border: 0.2rem solid var(--color-primary-variant);
        border-radius: 50%;
        font-size: 2rem;
        color: var(--color-primary-variant);
        display: flex;
        justify-content: center;
        align-items: center;
        transition: all 400ms ease-in-out;
    }


}

/* ==================== Media Queries (medium screen) =================== */

@media screen and (max-width: 600px) {
    h1, h2 {
        font-size: 2rem;
        line-height: 1.3;
        color: var(--color-white);
    }

    header {
        padding: 0;
        padding-bottom: 6rem;
    }

    .header__container {
        grid-template-columns: 1fr;
        gap: 1rem;
        text-align: center;
    }

    .header__image-lg {
        width: 80%;
        height: 29rem;
        margin: 0 auto;
        margin-top: 7rem;
        overflow: hidden;
        border-radius: 5rem 5rem 5rem 5rem;
    }

    .header__head {
        justify-content: center;
        /* padding: 1rem; */
    }

    .header__right p {
        margin-top: 1rem;
    }

    .header__title {
        margin-top: 1rem;
    }

    .nav__socials {
        display: none;
    }

    hr {
        display: none;
    }

    nav .nav__logo {
        position: fixed;
        display: grid;
        justify-content: start;
        left: 1rem;
    }

    nav .nav__toggle-btn {
        position: fixed;
        display: grid;
        justify-content: start;
        right: 4rem;
    }

    nav .nav__links {
        left: -1rem;
    }

    /* ==================== About =================== */
    
    #about {
        padding: 2rem;
    }

    .about__container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about__right p {
        width: 100%;
        margin-top: 1rem;
    }

    .swiper-slide {
        border: 0;
    }

    /* ==================== Gallery =================== */

    #gallery {
        margin-top: 6rem;
        padding: 2rem;
    }

    .gallery__container p {
        margin-top: 1rem;
    }

    .swiper-wrapper {
        margin-top: 3rem;
    }

    /* ==================== Exhibition =================== */

    #exhibitions {
        margin-top: 6rem;
        padding: 2rem;
        margin-bottom: 0;
    }

    .exhibition__head {
        grid-template-columns: 1fr;
    }

    .exhibition__head > p {
        margin-top: 1rem;
    }

    .exhibitions__gallery {
        display: block;
    }

    .exhibitions__gallery article {
        width: 100%;
        height: fit-content;
        margin-bottom: 1rem;
    }

    /* ==================== Footer =================== */

    footer {
        margin-top: 1rem;
        padding: 2rem;
    }

    .footer__head {
        flex-direction: column;
    }

    .footer__head h2 {
        font-size: 1.5rem;
    }

    .footer__links {
        flex-direction: column;
        text-align: center;
    }

    .socials {
        display: flex;
        gap: 1rem;
        align-items: center;
        justify-content: center;
        margin-top: 1rem;
    }

    .socials a {
        display: grid;
        width: 2rem;
        height: 2rem;
        background: linear-gradient(var(--color-primary-variant), var(--color-primary));
        border-radius: 0.5rem;
        color: var(--color-bg-4);
        place-items: center;
    }

    .socials a:hover {
        box-shadow: 0 1rem 1rem rgba(0, 0, 0, 0.5);
    }

}

@media screen and (max-width: 400px) {
    header {
        padding: 0;
        padding-bottom: 3rem;
    }

    .header__container {
        grid-template-columns: 1fr;
        gap: 1rem;
        text-align: center;
    }

    .header__image-lg {
        width: 80%;
        height: 26rem;
        margin: 0 auto;
        margin-top: 7rem;
        overflow: hidden;
        border: 1px solid var(--color-bg-4);
    }
    

    .over {
        width: 80%;
    }

    

}