:root {
    --Blue: #4880ea;
}

.material-symbols-outlined {
    font-variation-settings:
    'FILL' 0,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
    text-decoration: none;
}

body.scroll {
    overflow-y: hidden;
}

/* HEADER */

header {
    position: sticky;
    top: 0;
    z-index: 999;
    background-color: white;
}

.header-icons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.25rem;
}

.header-icons button, .header-icons a {
    border: none;
    background-color: inherit;
    cursor: pointer;
    font-size: 1.75rem;
    color: var(--Blue);
}

.header-icons img {
    height: 1.75rem;
    width: 1.75rem;
}

nav {
    display: none;
    overflow-y: scroll;
    background-color: lightgray;
}

nav.open {
    display: block;
    height: 94vh;
}

#main-cat li button, #main-cat li a, .sub-cat li button, .sub-cat li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border: none;
    background-color: lightgray;
    color: var(--Blue);
    font-size: 1.25rem;
    text-align: left;
    width: 100%;
    cursor: pointer;
}

#main-cat li button:hover .chev-right, .sub-cat li button:hover .chev-right {
    transform: translate(0.5rem, 0);
    transition: 0.3s;
}

.chev-right, .chev-left {
    font-size: 2rem;
    transition: 0.3s;
}

.sub-cat {
    display: none;
}

.sub-cat.open {
    display: block;
}

.sub-cat li button:hover .chev-left {
    transform: translate(-0.5rem, 0);
    transition: 0.3s;
}

.back-btn {
    justify-content: flex-start !important;
}

.hidden {
    display: none;
}

.blank {
    height: 150vh;
}

/* FOOTER */

footer {
    background-color: gray;
    padding: 2rem 0 1rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-link {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    width: 100%;
    padding: 0 1rem;
    border-bottom: 1px solid white;
}

.footer-link button {
    border: none;
    background-color: inherit;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    cursor: pointer;
}

.drop-down-btn {
    font-size: 1.5rem;
    transition: 0.3s;
}

.drop-down-btn.open {
    transform: rotate(-90deg);
    transition: 0.3s;
}

.footer-link ul {
    display: flex;
    overflow: hidden;
    max-height: 0;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style-type: none;
    transition: max-height 0.5s ease-out;
}

.footer-link ul.open {
    max-height: 750px;
    transition: max-height 0.5s ease-in;
}

.footer-link ul li {
    width: 100%;
}

.footer-link ul li:last-child {
    margin-bottom: 1rem;
}

.footer-link ul li a {
    color: white;
    font-size: 1.25rem;
    text-decoration: none;
}

.footer-link ul li a:hover {
    text-decoration: underline;
}

@media (min-width: 1200px) {
    .footer-links {
        display: flex;
        flex-wrap: nowrap;
        justify-content: center;
        gap: 0.5rem;
        padding: 0 2rem;
    }

    .footer-link {
        display: flex;
        flex-direction: column;
        flex-wrap: wrap;
        gap: 0.5rem;
        width: 100%;
        padding: 0 1rem;
        border: none;
    }

    .footer-link button {
        width: auto;
        border-bottom: 1px solid white;
        font-size: 1rem;
        cursor: default;
    }

    .drop-down-btn {
        display: none;
    }
    
    .footer-link ul {
        display: flex;
        flex-direction: column;
        overflow: auto;
        max-height: 750px;
        flex-wrap: wrap;
        gap: 0.5rem;
        list-style-type: none;
        transition: max-height 0.5s ease-out;
    }
    
    .footer-link ul li:last-child {
        margin-bottom: 0;
    }

    .footer-link ul li a {
        font-size: 0.9rem;
    }
}