#back-to-top{position:fixed;bottom:24px;right:20px;z-index:1030;width:52px;height:52px;padding:0;border-radius:50%;border:none;background:linear-gradient(135deg,#4f46e5 0%,#4338ca 100%);color:#fff;box-shadow:0 4px 12px rgba(79,70,229,.25) , 0 2px 6px rgba(0,0,0,.1);display:flex;align-items:center;justify-content:center;transition:all .3s cubic-bezier(.4,0,.2,1);opacity:0;transform:translateY(20px) scale(.8);pointer-events:none;visibility:hidden;cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation}#back-to-top.show{opacity:1;transform:translateY(0) scale(1);pointer-events:all;visibility:visible}#back-to-top i{font-size:var(--fs-xl);line-height:1;transition:transform .2s ease}@media (hover:hover) and (pointer:fine){#back-to-top:hover{transform:translateY(-4px) scale(1.05);box-shadow:0 8px 20px rgba(79,70,229,.35) , 0 4px 10px rgba(0,0,0,.15)}#back-to-top:hover i{transform:translateY(-2px)}}#back-to-top:active{transform:translateY(0) scale(.95);box-shadow:0 2px 6px rgba(79,70,229,.3) , 0 1px 3px rgba(0,0,0,.15);transition-duration:.1s}#back-to-top:focus{outline:none;box-shadow:0 4px 12px rgba(79,70,229,.25) , 0 2px 6px rgba(0,0,0,.1) , 0 0 0 3px rgba(79,70,229,.2)}@keyframes pulse-subtle {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25), 0 2px 6px rgba(0, 0, 0, 0.1);
    }
    50% {
        box-shadow: 0 4px 16px rgba(79, 70, 229, 0.4), 0 2px 8px rgba(0, 0, 0, 0.15);
    }
}#back-to-top.first-show{animation:pulse-subtle 2s ease-in-out 3}@media (max-width:359.98px){#back-to-top{bottom:16px;right:12px;max-width:44px;height:44px}#back-to-top i{font-size:var(--fs-base)}}@media (min-width:360px) and (max-width:575.98px){#back-to-top{bottom:74px;right:16px;max-width:48px;height:48px}#back-to-top i{font-size:var(--fs-lg)}}@media (min-width:576px) and (max-width:767.98px){#back-to-top{bottom:28px;right:24px;max-width:56px;height:56px}#back-to-top i{font-size:var(--fs-xl)}}@media (min-width:768px){#back-to-top{bottom:32px;right:32px;width:60px;height:60px}#back-to-top i{font-size:var(--fs-2xl)}}#back-to-top.glass{background:rgba(79,70,229,.85);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}#back-to-top.minimal{background:#fff;color:#4f46e5;border:2px solid #4f46e5;box-shadow:0 2px 8px rgba(0,0,0,.08)}@media (hover:hover) and (pointer:fine){#back-to-top.minimal:hover{background:#eef2ff;border-color:#4338ca}}@media (prefers-color-scheme:dark){#back-to-top{background:linear-gradient(135deg,#6366f1 0%,#4f46e5 100%);box-shadow:0 4px 12px rgba(99,102,241,.3) , 0 2px 6px rgba(0,0,0,.3)}@media (hover: hover) and (pointer: fine) {
        #back-to-top:hover {
            box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4),
                        0 4px 10px rgba(0, 0, 0, 0.3);
        }
    }#back-to-top.minimal{background:#1e293b;color:#818cf8;border-color:#818cf8;box-shadow:0 2px 8px rgba(0,0,0,.3)}@media (hover: hover) and (pointer: fine) {
        #back-to-top.minimal:hover {
            background: #334155;
        }
    }}@media (prefers-reduced-motion:reduce){#back-to-top,#back-to-top *,#back-to-top i{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@media (prefers-contrast:high){#back-to-top{border:2px solid currentColor}}