/* Reset + tipografia di base */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    height: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-bg-page);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.25;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }

p {
    color: var(--color-text-secondary);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-hover);
}

ul, ol {
    list-style: none;
}

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

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
}

/* Utility */
.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }
.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }

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