/* إضافات بوابتي — ملف مستقل، دون تعديل style.css */
.back-to-top{position:fixed;z-index:1000;inset-inline-end:24px;bottom:24px;width:48px;height:48px;border:1px solid rgba(213,181,112,.72);border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,#164c40,#0c3029);color:#e3c781;box-shadow:0 10px 28px rgba(8,37,31,.24);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .22s ease,transform .22s ease,visibility .22s ease,box-shadow .22s ease}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{box-shadow:0 12px 32px rgba(8,37,31,.34);transform:translateY(-3px)}
.back-to-top svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
@media(max-width:640px){.back-to-top{width:42px;height:42px;inset-inline-end:14px;bottom:14px}}