$black100: #151515;
$black200: #121212;
$black300: #101010;

$white100: #e8e3e3;

$red: #B66467;
$orange: #D8A657;
$yellow: #D9BC8C;
$green: #8C977D;
$blue: #8DA3B9;
$purple: #A988B0;

$rad: 0.5rem;
$font-header: "Hubot-Sans", sans-serif;
$font-body: "Mona-Sans", sans-serif;

@font-face {
  font-family: "Mona-Sans";
  src: url("f../onts/Mona-Sans.woff2") format("woff2 supports variations"),
    url("../fonts/Mona-Sans.woff2") format("woff2-variations");
  font-weight: 200 900;
  font-stretch: 75% 125%;
  font-display: swap;
}
@font-face {
  font-family: "Hubot-Sans";
  src: url("../fonts/Hubot-Sans.woff2") format("woff2 supports variations"),
    url("../fonts/Hubot-Sans.woff2") format("woff2-variations");
  font-weight: 200 900;
  font-stretch: 75% 125%;
  font-display: swap;
}

html, body {
    margin: 0;
    padding: 0;

    min-height: 100vh;

    background-color: $black100;

    scroll-behavior: smooth;
}

nav {
    margin: 0;
    padding: 0;

    max-width: calc(100vw - 3.5rem);
    width: 3.5rem;
    height: 100dvh;

    display: flex;
    flex-direction: column;
    justify-content: space-between;

    position: fixed;
    top: 0;
    left: 0;

    background-color: rgba($black300, 0.6);
    color: $white100;
    backdrop-filter: blur(5rem) saturate(200%);

    box-sizing: border-box;
    z-index: 2;
    overflow: hidden;
    transition: width 0.4s ease-in-out, background-color 0.3s ease-in-out;

    &:hover {
        width: 25rem;

        background-color: $black300;

        a span {
            opacity: 1;
        }
    }

    div {
        display: flex;
        flex-direction: column;
        gap: 0.25rem;

        a {
            margin: 0;
            padding: 1rem 1rem 1rem 0.7rem;
            
            width: 100%;
            height: 3.5rem;
    
            display: flex;
            flex-direction: row;
            align-items: center;
            gap: 0.5rem;
    
            text-decoration: none;
            color: $white100;
            border-left: 0.3rem solid #00000000;
    
            box-sizing: border-box;
    
            
            i {
                margin: 0;
                
                font-size: 1.5rem;
    
                color: $white100;
            }
            span {
                display: block;
    
                font-family: $font-body;
                font-size: 1.25rem;
                font-stretch: expanded;
                font-weight: 500;
    
                color: $white100;
                opacity: 0; // hidden

                transition: opacity 0.3s ease-in-out;
            }
    
            &:hover {
                background-color: $black200;
                border-left: 0.3rem solid $green;
    
                * {
                    color: $green;
                }
            }
        }
    }
}

main {
    margin: 0;
    padding: 0;

    background-color: $black100;
    color: $white100;

    min-height: 100vh;

    overflow-y: auto;
    box-sizing: border-box;

    header {
        margin: 0 0 -15rem 0;
        padding: 0;
    
        width: 100%;
        height: 40vh;

        background-color: $black200;
        position: fixed;
        top: 0;

        box-sizing: border-box;
    
        img {
            position: absolute;
            top: 0;
            left: 0;
    
            width: 100%;
            height: 100%;
    
            object-fit: cover;
        }
        span {
            position: absolute;
            top: 0;
            left: 0;

            width: 100%;
            height: 100%;

            background-image: linear-gradient(to bottom, #00000000, rgba($black100, 1));
            backdrop-filter: blur(0.5rem);

            z-index: +1;
        }
    }
}

#topButton {
    margin: 0;
    padding: 0.25rem;
    
    position: fixed;
    bottom: 1rem;
    right: -3rem;

    font-size: 3rem;

    display: flex; // hidden
    justify-content: center;
    align-items: center;

    border-radius: 50%;
    background-color: $black300;
    opacity: 0; // hidden

    z-index: 2;

    cursor: pointer;

    transition: all 0.2s ease-in-out;

    &:hover {
        background-color: $black200;
        color: $green;
    }
}

.app {
    margin: 10rem 1rem 0 4.5rem;
    padding: 1rem;

    width: auto;
    min-height: calc(150vh - 10rem);

    position: relative;

    display: flex;
    flex-direction: column;
    gap: 1rem;

    background-color: $black100;
    color: $white100;
    border-radius: $rad $rad 0 0;

    box-sizing: border-box;
    z-index: 1;
    overflow: unset;

    h1 {
        margin: 0;
        padding: 0;

        font-family: $font-header;
        font-size: 2.5rem;
        font-stretch: ultra-expanded;
        font-weight: 600;

        color: $green;
    }
}

.gallery {
    margin: 0;
    padding: 0;

    width: 100%;

    display: grid;
    grid-template-columns: auto auto auto auto auto auto;
    gap: 0.5rem;

    .gallery__item {
        margin: 0;
        padding: 0;

        height: auto;

        position: relative;

        background-color: $black200;
        border-radius: calc($rad / 2);

        box-sizing: border-box;
        overflow: hidden;

        &:after {
            content: "";
            display: block;
            padding-bottom: 100%;
        }

        .gallery__item-info {
            margin: 0;
            padding: 0;
    
            width: 100%;
            height: 100%;

            position: absolute;
            left: 0;
            bottom: 0;

            display: flex;
            flex-direction: column;
            justify-content: flex-end;

            background-image: linear-gradient(to bottom, #00000000, rgba($black100, 0.8));

            z-index: +1;

            opacity: 0; // hide
            transform: scale(1.05); // scale up
            transition: all 0.35s ease-in-out;

            h2 {
                margin: 0;
                padding: 0 1rem 0.5rem;
    
                font-family: $font-header;
                font-size: 1rem;
                font-stretch: ultra-expanded;
                font-weight: 600;
    
                color: $green;

                text-overflow: ellipsis;
                overflow: hidden;

                opacity: 0; // hide
                transition: all 0.35s ease-in-out;
            }

            p {
                margin: 0;
                padding: 0 1rem 0.5rem;

                font-family: $font-body;
                font-size: 0.8rem;
                font-weight: 500;

                color: $white100;

                text-overflow: ellipsis;
                overflow: hidden;

                opacity: 0; // hide
                transition: all 0.35s ease-in-out;
            }

            &:hover {
                opacity: 1;
                transform: scale(1);

                h2, p {
                    opacity: 1;
                }
            }
        }

        .gallery__item-image {
            margin: 0;
            padding: 0;
    
            width: 100%;
            height: 100%;

            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
    
            object-fit: cover;
            object-position: center;

            border-radius: $rad;
        }
    }

}

.image__container {
    margin: 0;
    padding: 0;

    width: 100%;
    height: calc(100vh - 12rem);

    position: sticky;
    top: 0;

    display: flex;

    border-radius: calc($rad / 2);
    background-color: $black200;

    box-sizing: border-box;

    img {
        margin: auto;
        padding: 0;

        max-width: 100%;
        max-height: 100%;

        object-fit: contain;
        object-position: center;

        border-radius: calc($rad / 2);
    }
}
.image__info {
    margin: 0;
    padding: 0;

    width: 100%;

    display: flex;
    flex-direction: column;

    background-color: $black200;
    border-radius: calc($rad / 2);

    box-sizing: border-box;

    h2 {
        margin: 0;
        padding: 0 1rem 0.5rem;

        font-family: $font-header;
        font-size: 1rem;
        font-stretch: ultra-expanded;
        font-weight: 600;

        color: $green;

        text-overflow: ellipsis;
        overflow: hidden;
    }
    p {
        margin: 0;
        padding: 0 1rem 0.5rem;

        font-family: $font-body;
        font-size: 0.8rem;
        font-weight: 500;

        color: $white100;

        text-overflow: ellipsis;
        overflow: hidden;
    }
}