/* style for navigation */
header {
    background: var(--navbar-background);
    text-align: left;
    position: fixed;
    top: 0;
    z-index: 999;
    width: 100%;
    border-bottom: 1px solid var(--navbar-perimeter);
}

.logo {
    display: block;
    height: 40px;
    margin-left: 1em;
    margin-top: 10px;
    margin-bottom: 10px;
    content: url("/images/logo_anniversary.svg");
}

.nav-toggle {
    display: none;
}

.nav-toggle-label {
    position: absolute;
    top: 0;
    right: 0;
    margin-right: 1em;
    height: 100%;
    display: flex;
    align-items: center;
    cursor: pointer;
}

.nav-toggle-label span,
.nav-toggle-label span::before,
.nav-toggle-label span::after {
    display: block;
    background: var(--text);
    height: 2px;
    width: 1.5em;
    border-radius: 2px;
    position: relative;
    transition: 300ms;
    transform-origin: center;
}

.nav-toggle-label span::before,
.nav-toggle-label span::after {
    content: "";
    position: absolute;
}

.nav-toggle-label span::before {
    bottom: 7px;
}

.nav-toggle-label span::after {
    top: 7px;
}

nav {
    position: absolute;
    text-align: center;
    top: 100%;
    left: 0;
    background: var(--navbar-background);
    width: 100%;
    transform: scale(1, 0);
    transform-origin: top;
    transition: transform 400ms ease-in-out;
}

nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

nav li {
    margin-bottom: 1em;
    margin-left: 1em;
}

nav a {
    color: var(--text);
    text-decoration: none;
    opacity: 0;
    transition: opacity 150ms ease-in-out;
}

nav a:hover {
    color: var(--company-blue);
}

.nav-toggle:checked ~ nav {
    transform: scale(1, 1);
}

.nav-toggle:checked ~ nav a {
    opacity: 1;
    transition: opacity 250ms ease-in-out 250ms;
}

.nav-toggle:checked ~ label span::before {
    transform: translateY(7px) rotate(-45deg);
}

.nav-toggle:checked ~ label span {
    background: var(--navbar);
}

.nav-toggle:checked ~ label span::after {
    transform: translateY(-7px) rotate(45deg);
}

.active {
    color: var(--company-blue);
}

.spacer {
    height: var(--navbar-height);
}

@media screen and (min-width: 1130px) {
    :root {
        --navbar-height: 70px;
    }

    .nav-toggle-label {
        display: none;
    }

    header {
        display: grid;
        grid-template-columns: 40px auto minmax(600px, 8fr) 40px;
    }

    .logo {
        grid-column: 2 / span 1;
        height: 50px;
        margin: 10px 0;
        cursor: pointer;
    }

    nav {
        all: unset;
        grid-column: 3 / 4;
        display: flex;
        justify-content: flex-end;
        align-items: center;
        text-align: right;
    }

    nav ul {
        display: flex;
    }

    nav li {
        margin-left: 2em;
        margin-bottom: 0;
    }

    nav a {
        opacity: 1;
        position: relative;
        padding: 0 5px;
    }

    nav a::before {
        content: "";
        display: block;
        height: 2px;
        border-radius: 2px;
        background: var(--company-blue);
        position: absolute;
        bottom: -.3em;
        left: 0;
        right: 0;
        transform: scale(0, 1);
        transition: transform 250ms ease-in-out;
    }

    nav a:hover::before {
        transform: scale(1, 1);
    }

    .active::before {
        content: "";
        display: block;
        height: 2px;
        border-radius: 2px;
        background: var(--company-blue);
        position: absolute;
        bottom: -.3em;
        left: 0;
        right: 0;
        transform: scale(1, 1);
    }
}

@media screen and (prefers-color-scheme: dark) {
    .logo {
        content: url("/images/logo_anniversary_dark.svg");
    }
}