:root {
    --color-primary: #0b6e8a;
    --color-text: #1f2937;
    --color-bg: #ffffff;
    --color-surface: #f1f7f9;
    --radius: 12px;
}

* {
    box-sizing: border-box;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid #f59e0b;
    outline-offset: 2px;
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

section {
    padding: 3rem 1.25rem;
    max-width: 1000px;
    margin: 0 auto;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: #000;
    color: #fff;
    padding: 0.75rem 1rem;
    z-index: 10;
}

.skip-link:focus {
    left: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
    /* altura aproximada del header fijo */
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}