.floating-social {
    position: fixed;
    z-index: 1800;
    right: clamp(16px, 2.2vw, 30px);
    bottom: clamp(18px, 3vw, 34px);
    display: flex;
    flex-direction: column;
    gap: 11px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(12px);
    transition: opacity .22s ease, visibility .22s ease, transform .22s ease;
}

.floating-social.is-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.floating-social__button {
    display: grid;
    width: 52px;
    height: 52px;
    padding: 0;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, .42);
    border-radius: 50%;
    color: #fff;
    box-shadow: 0 8px 24px rgba(18, 13, 10, .24);
    text-decoration: none;
    transition: filter .2s ease, transform .2s ease, box-shadow .2s ease;
}

.floating-social__button svg { width: 25px; height: 25px; }
.floating-social__button--whatsapp { background: #25d366; }
.floating-social__button--instagram { background: linear-gradient(135deg, #833ab4 5%, #c13584 38%, #e1306c 57%, #f77737 78%, #fcaf45 100%); }

.floating-social__button:hover,
.floating-social__button:focus-visible {
    filter: brightness(1.08);
    transform: translateY(-2px);
    box-shadow: 0 11px 28px rgba(18, 13, 10, .3);
}

.floating-social__button:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }

@media (max-width: 700px) {
    .floating-social { right: 14px; bottom: 16px; gap: 9px; }
    .floating-social__button { width: 48px; height: 48px; }
    .floating-social__button svg { width: 23px; height: 23px; }
}

@media (prefers-reduced-motion: reduce) {
    .floating-social,
    .floating-social__button { transition: none; }
}