/* Floating Action Button */
.fab{position:fixed;bottom:2rem;right:2rem;width:56px;height:56px;border-radius:50%;background:var(--gradient-primary);border:none;color:#fff;box-shadow:var(--shadow-lg);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.3s ease;z-index:1000;opacity:0;transform:scale(0.8);pointer-events:none}
.fab.visible{opacity:1;transform:scale(1);pointer-events:auto}
.fab:hover{transform:scale(1.1);box-shadow:var(--shadow-xl);filter:brightness(1.2)}
.fab:active{transform:scale(0.95)}
.fab svg{width:24px;height:24px}