:root {
    --clr-primary: hsl(216, 28%, 7%);
    --clr-primary-100: hsla(215, 21%, 11%, 0.9);
    --clr-primary-200: hsla(215, 21%, 11%, 0.5);
    --clr-primary-300: hsl(218, 17%, 12%);
    --clr-primary-400: hsl(212, 12%, 21%);
    --clr-primary-500: hsl(216, 12%, 25%);

    --clr-secondary: hsl(210, 67%, 96%);
    --clr-secondary-hover: hsl(210, 3%, 73%);
    --clr-secondary-link: hsl(212, 100%, 67%);

    font-family: roboto, helvetica, arial, sans-serif;
}

html,
body {
    color: var(--clr-secondary);
    background-color: var(--clr-primary);
    line-height: 1.5;
    min-height: 100vh;
    min-width: 300px;

    overflow-x: hidden;
}

main {
    min-height: 100%;
}

/* Utility classes */
.flex {
    display: flex;
    gap: var(--gap, 1rem);
}

.uppercase {
    text-transform: uppercase;
}

.bold {
    font-weight: 700;
}

.sr-only {
    border: 0 !important;
    clip: rect(1px, 1px, 1px, 1px) !important; /* 1 */
    -webkit-clip-path: inset(50%) !important;
    clip-path: inset(50%) !important; /* 2 */
    height: 1px !important;
    margin: -1px !important;
    overflow: hidden !important;
    padding: 0 !important;
    position: absolute !important;
    width: 1px !important;
    white-space: nowrap !important; /* 3 */
}

/* Navigation bar */

.logo {
    margin: 2rem;
    width: 2rem;
    aspect-ratio: 1;
}

.primary-header {
    align-items: center;
    justify-content: space-between;
}

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

.primary-navigation {
    background-color: var(--clr-primary-100);
}

@supports (backdrop-filter: blur(2rem)) {
    .primary-navigation {
        background-color: var(--clr-primary-200);
        backdrop-filter: blur(2rem);
    }
}

.primary-navigation a {
    color: var(--clr-secondary);
    text-decoration: none;
}
.primary-navigation a:hover {
    color: var(--clr-secondary-hover);
}

.primary-navigation a > [aria-hidden="true"] {
    font-weight: 700;
    margin-inline-end: 0.75rem;
}

@media (max-width: 35em) {
    .primary-navigation {
        --gap: 3rem;

        position: fixed;
        z-index: 1000;
        inset: 0 0 0 20%;

        flex-direction: column;
        padding: min(30vh, 10rem) 2rem;

        transform: translateX(100%);
        transition: transform 350ms ease-out;
    }

    .primary-navigation[data-visible="true"] {
        transform: translateX(0%);
    }

    .mobile-nav-toggle {
        display: block;
        position: absolute;
        z-index: 9999;
        background-color: transparent;
        background-image: url("../img/icons/icon-hamburger-menu.svg");
        background-repeat: no-repeat;
        width: 3rem;
        border: 0;
        aspect-ratio: 1;
        top: 2rem;
        right: 2rem;
    }

    .mobile-nav-toggle[aria-expanded="true"] {
        background-color: transparent;
        background-image: url("../img/icons/icon-close.svg");
        background-repeat: no-repeat;
    }
}

@media (min-width: 35em) and (max-width: 55em) {
    .primary-navigation a > [aria-hidden="true"] {
        display: none;
    }
}

@media (min-width: 35em) {
    .primary-navigation {
        --gap: clamp(1.5rem, 5vw, 3rem);
        padding-block: 16px;
        padding-inline: clamp(3rem, 8vw, 10rem);
    }
}