/* Explain: Base document styles, typography, and background patterns. - */
* {
    box-sizing: border-box;
}

html {
    background: var(--background-color);
    scroll-behavior: smooth;
}

body {
    margin: 0;
    overflow-x: hidden;
    background-color: var(--background-color);
    color: var(--text-color);
    /* Very subtle lattice geometric pattern for restrained architectural feel */
    background-image: repeating-linear-gradient(45deg, rgba(142, 23, 23, 0.015) 0, rgba(142, 23, 23, 0.015) 1px, transparent 1px, transparent 48px),
                      repeating-linear-gradient(-45deg, rgba(142, 23, 23, 0.015) 0, rgba(142, 23, 23, 0.015) 1px, transparent 1px, transparent 48px);
    background-attachment: fixed;
}

body::selection {
    background: var(--secondary-color);
    color: var(--surface-color);
}

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

button,
a,
input,
select,
textarea {
    font: inherit;
}

button,
a[role="button"] {
    cursor: pointer;
}

:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 4px;
}

.heading-font {
    font-family: var(--font-heading);
}

.body-font {
    font-family: var(--font-body);
}