/**
 * Minimal modern reset (Sprint U1). Normalises box model, removes default
 * margins, and makes media/forms predictable. Mobile-first: base rules
 * assume a phone; larger screens are enhanced in mobile.css.
 */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    background: var(--c-bg);
    color: var(--c-ink);
    font-family: var(--font-sans);
    font-size: var(--fs-md);
    line-height: var(--lh-normal);
    -webkit-font-smoothing: antialiased;
}

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

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

button {
    cursor: pointer;
    background: none;
    border: none;
}

a {
    color: var(--c-blue);
    text-decoration: none;
}

h1, h2, h3, h4 {
    line-height: var(--lh-tight);
    font-weight: var(--fw-bold);
}

:focus-visible {
    outline: 3px solid var(--c-blue-accent);
    outline-offset: 2px;
}