:root {
    --p-font-size: 1rem;
    --h6-font-size: 1.25rem;
    --h5-font-size: 1.563rem;
    --h4-font-size: 1.953rem;
    --h3-font-size: 2.441rem;
    --h2-font-size: 3.052rem;
    --h1-font-size: 3.815rem;
    --text-color: #ffffff;
    --text-contrast-color: #000000;
    --hover-color: #808080;
    --text-font-weight: 600;
    --text-light-font-weight: 300;
}

* {
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    box-sizing: border-box;
}

html,
body {
    scroll-behavior: smooth;
    font-size: 62.5%;
    font-family: Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #000000;
    overflow-x: hidden;
    -webkit-animation: fadeInAnimation ease 3s;
    animation: fadeInAnimation ease 3s;
    -webkit-animation-iteration-count: 1;
    animation-iteration-count: 1;
    -webkit-animation-fill-mode: forwards;
    animation-fill-mode: forwards;
}

@-webkit-keyframes fadeInAnimation {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

@keyframes fadeInAnimation {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

/* scrollbar */
::-webkit-scrollbar {
    display: none;
}

/* Menu */
.nav-header-container {
    position: fixed;
    width: 100vw;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin: 0;
    padding: 1rem 2rem;
    z-index: 5;
}

.nav-item {
    font-size: var(--p-font-size);
    font-weight: var(--text-font-weight);
    text-transform: uppercase;
    text-align: left;
    margin: 0;
    padding: 0;
    transition: 0.2s ease-in;
}

.right-nav {
    width: 50%;
}

.nav-item a {
    color: var(--text-color);
    text-decoration: none;
    transition: 0.2s ease-in;
}

.nav-item a:hover {
    color: var(--hover-color);
    transition: 0.2s ease-out;
}

.mobile-nav,
.openbtn,
.hamburger,
.logo {
    display: none;
}

/* nav phone */
@media screen and (max-width: 768px) {
    .nav-header-container {
        display: none;
    }

    .mobile-nav {
        position: fixed;
        display: block;
        height: 100vh;
        width: 0;
        z-index: 999;
        top: 0;
        left: 0;
        background-color: #ffffff;
        overflow: hidden;
        transition: ease-in-out 0.2s;
    }

    .m-n-content {
        position: relative;
        top: 25%;
        width: 100%;
        margin-top: 30px;
        text-wrap: nowrap;
        transition: ease-in-out 0.2s;
    }

    .m-n-content a {
        display: flex;
        width: 100%;
        margin: 0;
        padding: 10px;
        text-decoration: none;
        font-size: var(--h5-font-size);
        text-transform: uppercase;
        color: var(--text-contrast-color);
    }

    .hamburger {
        display: block;
        position: fixed;
        cursor: pointer;
        margin: 0%;
        padding: 10px;
        z-index: 12;
        background-color: #ffffff;
    }

    .line:first-child {
        width: 20px;
        height: 1px;
        background-color: #000000;
        margin: 0 0 6px 0;
        padding: 0;
        transition: 0.4;
    }

    .line {
        width: 20px;
        height: 1px;
        background-color: #000000;
        margin: 0 0 6px 0;
        padding: 0;
        transition: 0.4;
    }

    .line:last-child {
        width: 20px;
        height: 1px;
        background-color: #000000;
        margin: 0;
        padding: 0;
        transition: 0.4;
    }

    .closebtn {
        position: absolute;
        text-align: right;
        font-size: var(--h6-font-size);
        font-weight: var(--text-font-weight);
        text-transform: uppercase;
        text-decoration: none;
        color: #000000;
        width: 100%;
        margin: 0;
        padding: 10px;
    }

    .logo {
        position: fixed;
        display: flex;
        justify-content: right;
        width: 100vw;
        margin: 0%;
        padding: 1rem;
        font-size: var(--p-font-size);
        text-transform: uppercase;
        color: var(--text-color);
        z-index: 11;
    }
}

/* Tekst */
.grid-container-text {
    display: grid;
    gap: 0rem;
    grid-template-columns: repeat(2, 1fr);
    height: 100vh;
}

.grid-item-text {
    margin: auto 0;
    padding: 0;
}

.text-index {
    font-size: var(--h4-font-size);
    font-weight: var(--text-font-weight);
    text-wrap: stable;
    hyphens: auto;
    color: var(--text-color);
    margin: 0 0 0 2rem;
    padding: 0;
}

/* phone grid */
.grid-container-phone {
    display: none;
}

@media screen and (max-width: 900px) {
    .grid-container-text {
        display: none;
    }

    .grid-container-phone {
        display: grid;
        gap: 0;
        grid-template-columns: repeat(1, 1fr);
        width: 100vw;
        height: 100vh;
    }

    .grid-item-phone {
        margin: 0 0 5rem;
        padding: 0;
    }

    .text-index-phone {
        font-size: var(--h5-font-size);
        font-weight: var(--text-font-weight);
        color: var(--text-color);
        text-wrap: stable;
        margin: 0 1rem 0 1rem;
        padding: 0;
    }
}

/* Afbeeldingen*/
.grid-container-books {
    display: grid;
    gap: 15rem;
    grid-template-columns: repeat(4, 1fr);
    margin: 0rem 0rem 15rem 0rem;
    padding: 0;
}

.grid-item {
    align-self: baseline;
    margin: 0;
    padding: 0;
}

.grid-item img {
    width: 100%;
}

.text-item-header {
    font-size: var(--h1-font-size);
    font-weight: var(--text-font-weight);
    color: var(--text-color);
    text-transform: uppercase;
    margin: 0;
    padding: 0 0 0 2rem;
}

.text-item {
    font-size: var(--p-font-size);
    font-weight: var(--text-light-font-weight);
    color: var(--text-color);
    text-transform: capitalize;
    text-align: center;
    margin: 0;
    padding: 1rem 0;
}

.text-item span {
    font-weight: var(--text-font-weight);
}

@media screen and (max-width: 900px) {
    .grid-container-books {
        display: grid;
        gap: 1rem;
        grid-template-columns: repeat(2, 1fr);
        margin: 0rem 1rem 15rem 1rem;
        padding: 0;
    }
}

/* Designers */
.grid-container-designers {
    display: grid;
    gap: 0;
    grid-template-columns: repeat(3, 1fr);
    margin: 0rem 0rem 15rem 0rem;
    padding: 0;
}

.grid-item-designer {
    margin: 0;
    padding: 0;
}

.span-header-designer {
    grid-column-start: 1;
    grid-column-end: 4;
}

.header-designer {
    font-size: var(--h1-font-size);
    font-weight: var(--text-font-weight);
    color: var(--text-color);
    text-transform: uppercase;
    margin: 0 0 1rem 2rem;
}

.text-item-designer {
    font-size: var(--h5-font-size);
    font-weight: var(--text-font-weight);
    color: var(--text-color);
    margin: 1rem 0;
    padding: 0;
}

.text-item-designer a {
    font-size: var(--h5-font-size);
    font-weight: var(--text-font-weight);
    color: var(--text-color);
    text-decoration: none;
    margin: 1rem 0;
    padding: 0;
}

.divider {
    border-bottom: 1px solid white;
}

@media screen and (max-width: 900px) {
    .grid-container-designers {
        display: grid;
        gap: 0;
        grid-template-columns: repeat(3, 1fr);
        margin: 0rem 0rem 15rem 0rem;
        padding: 0;
    }

    .header-designer {
        font-size: var(--h2-font-size);
        font-weight: var(--text-font-weight);
        color: var(--text-color);
        text-transform: uppercase;
        margin: 0 0 1rem 1rem;
    }
    
    .text-item-designer {
        font-size: var(--h6-font-size);
        font-weight: var(--text-font-weight);
        color: var(--text-color);
        margin: 1rem 0;
        padding: 0;
    }

    .text-item-designer a {
        font-size: var(--h5-font-size);
        font-weight: var(--text-font-weight);
        color: var(--text-color);
        text-decoration: none;
        margin: 1rem 0;
        padding: 0;
    }
    
    .divider {
        border-bottom: 1px solid white;
    }
    
}