/* Accessibility helpers — Phase 4 */

.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: 100;
    padding: 0.75rem 1rem;
    background: #2563eb;
    color: #fff;
    font-weight: 700;
    border-radius: 0.5rem;
    text-decoration: none;
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
    width: auto;
    height: auto;
    overflow: visible;
}

:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
    outline: none;
}