:root {
    --color-scale-black: #010409;
    --color-scale-white: #ffffff;

    --color-scale-white-transparent-7: #ffffffbc;

    --color-scale-gray-0: #f0f6fc;
    --color-scale-gray-1: #c9d1d9;
    --color-scale-gray-2: #b1bac4;
    --color-scale-gray-3: #8b949e;
    --color-scale-gray-4: #6e7681;
    --color-scale-gray-5: #484f58;
    --color-scale-gray-6: #30363d;
    --color-scale-gray-7: #21262d;
    --color-scale-gray-8: #161b22;
    --color-scale-gray-9: #0d1117;

    --color-scale-gray-0-transparent-10: #f0f6fc1a;
    --color-scale-gray-8-transparent-50: #161b2280;
    --color-scale-gray-9-transparent-0: #0d111700;

    --color-scale-purple-0: #eddeff;
    --color-scale-purple-1: #e2c5ff;
    --color-scale-purple-2: #d2a8ff;
    --color-scale-purple-3: #bc8cff;
    --color-scale-purple-4: #a371f7;
    --color-scale-purple-5: #8957e5;
    --color-scale-purple-6: #6e40c9;
    --color-scale-purple-7: #553098;
    --color-scale-purple-8: #3c1e70;
    --color-scale-purple-9: #271052;

    --color-scale-purple-4-transparent-06: #a371f70f;

    --color-canvas-default: var(--color-scale-gray-9);
    --color-canvas-default-transparent: var(--color-scale-gray-9-transparent-0);
    --color-canvas-subtle: var(--color-scale-gray-8);

    --color-border-default: var(--color-scale-gray-6);

    --color-header-bg-default: var(--color-scale-gray-8);
    --color-header-bg-transparent: var(--color-scale-gray-8-transparent-5);
    --color-header-text: var(--color-scale-white-transparent-7);

    --color-btn-text: var(--color-scale-gray-1);
    --color-btn-bg: var(--color-scale-gray-7);
    --color-btn-border: var(--color-scale-gray-0-transparent-1);
    --color-btn-hover-bg: var(--color-scale-gray-6);
    --color-btn-hover-border: var(--color-scale-gray-3);
    --color-btn-active-border: var(--color-scale-gray-5);

    --color-fg-default: var(--color-scale-gray-1);
    --color-fg-muted: var(--color-scale-gray-3);
    --color-fg-subtle: var(--color-scale-gray-4);
    --color-fg-on-emphasis: var(--color-scale-white);
    --color-text-hover: var(--color-fg-muted);

    --color-accent-fg: var(--color-scale-purple-4);

    --color-text-link: var(--color-accent-fg);

    font-size: 16px;
    font-family: "Roboto", arial, sans-serif;
}

html,
body {
    color: var(--color-fg-default);
    background-color: var(--color-canvas-default);
    line-height: 1.5;
    min-height: 100vh;
    min-width: 300px;

    overflow-x: hidden;
}

/* 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;
    cursor: pointer;
}

.primary-navigation {
    background-color: var(--color-header-bg-default);
}

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

.primary-navigation a {
    color: var(--color-fg-default);
    text-decoration: none;
}
.primary-navigation a:hover {
    color: var(--color-fg-muted);
}

.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) {
    .primary-navigation {
        --gap: clamp(1.5rem, 5vw, 3rem);
        padding-block: 16px;
        padding-inline: clamp(3rem, 8vw, 10rem);
        background-color: var(--color-header-bg-default);
    }
}