/* ═══════════ Floating social rail (left side) ═══════════ */
.social-rail {
    position: fixed;
    left: 24px;
    bottom: 24px;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.social-rail__item {
    position: relative;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(10, 16, 23, .16);
    transition: transform .18s ease, box-shadow .18s ease;
}
.social-rail__item img { width: 24px; height: 24px; display: block; }
.social-rail__item:hover {
    transform: translateY(-2px) scale(1.06);
    box-shadow: 0 12px 28px rgba(10, 16, 23, .24);
}
.social-rail__pulse {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    opacity: 0;
    animation: tp-rail-pulse 2.6s ease-out infinite;
    z-index: -1;
}
.social-rail__item:nth-child(2) .social-rail__pulse { animation-delay: .5s; }
.social-rail__item:nth-child(3) .social-rail__pulse { animation-delay: 1.0s; }
.social-rail__item:nth-child(4) .social-rail__pulse { animation-delay: 1.5s; }
.social-rail__item:nth-child(5) .social-rail__pulse { animation-delay: 2.0s; }
.social-rail__item:nth-child(6) .social-rail__pulse { animation-delay: .25s; }
.social-rail__item:nth-child(7) .social-rail__pulse { animation-delay: .75s; }
.social-rail__item:nth-child(8) .social-rail__pulse { animation-delay: 1.25s; }
.social-rail__item:nth-child(9) .social-rail__pulse { animation-delay: 1.75s; }
.social-rail__item:nth-child(10) .social-rail__pulse { animation-delay: 2.25s; }
@keyframes tp-rail-pulse {
    0%   { transform: scale(1);    opacity: .75; }
    70%  { transform: scale(1.55); opacity: 0; }
    100% { transform: scale(1.55); opacity: 0; }
}
/* Accessibility & reduced motion */
.social-rail__item:focus-visible { outline: 2px solid #2563EB; outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
    .social-rail__pulse { animation: none; opacity: 0; }
    .social-rail__item { transition: none; }
}

/* Mobile / small screens — comfortable 44px touch targets */
@media (max-width: 640px) {
    .social-rail { left: 12px; bottom: 18px; gap: 8px; }
    .social-rail__item { width: 44px; height: 44px; box-shadow: 0 6px 18px rgba(10,16,23,.16); }
    .social-rail__item img { width: 24px; height: 24px; }
}