/* Performance-first base stylesheet. */

:root {
    --container-width: 1200px;
    --gutter: 1.25rem;
    --space: clamp(1.5rem, 3vw, 3rem);
    --text: #202020;
    --background: #fff;
    --border: #ddd;
    --link: #0057b8;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--background);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: var(--link);
}

button,
input {
    font: inherit;
}

.container {
    width: min(calc(100% - 2 * var(--gutter)), var(--container-width));
    margin-inline: auto;
}

.site-header {
    border-bottom: 1px solid var(--border);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 4rem;
}

.site-navigation ul {
    display: flex;
    gap: 1rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.menu-toggle {
    display: none;
}

.site-main {
    min-height: 60vh;
}

.content-area {
    padding-block: var(--space);
}

.entry-content {
    max-width: 75ch;
}

.card {
    padding-block: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.card__image {
    display: block;
    margin-bottom: 1rem;
}

.card__title {
    margin-block: 0 .5rem;
}

.site-footer {
    padding-block: 2rem;
    border-top: 1px solid var(--border);
}

.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 760px) {
    .menu-toggle {
        display: inline-flex;
    }

    .site-navigation {
        display: none;
        width: 100%;
    }

    .site-navigation.is-open {
        display: block;
    }

    .site-navigation ul {
        flex-direction: column;
        padding-block: 1rem;
    }

    .site-header__inner {
        flex-wrap: wrap;
    }
}