.fab-container {
  position: fixed;
  z-index: 9999;
  display: flex;
  gap: var(--fab-spacing, 12px);
  pointer-events: none;
}
.fab-container.fab-vertical {
  flex-direction: column;
}
.fab-container.fab-horizontal {
  flex-direction: row;
}
.fab-container.fab-bottom-right {
  right: 24px;
  bottom: 24px;
  align-items: flex-end;
}
.fab-container.fab-bottom-left {
  left: 24px;
  bottom: 24px;
  align-items: flex-end;
}
.fab-container.fab-top-right {
  right: 24px;
  top: 24px;
  align-items: flex-start;
}
.fab-container.fab-top-left {
  left: 24px;
  top: 24px;
  align-items: flex-start;
}

.fab-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  font-size: 1.8em;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.16);
  transition: transform 0.18s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.18s;
  pointer-events: auto;
  text-decoration: none !important;
  border: none;
  outline: none;
  margin: 0;
  position: relative;
  cursor: pointer;
  opacity: 0;
  animation: fab-fade-in 0.6s forwards;
}
.fab-shape-circle {
  border-radius: 50%;
}
.fab-shape-rounded {
  border-radius: 15px;
}
.fab-btn:hover {
  transform: scale(1.13) rotate(-3deg);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}
.fab-btn .fab-icon {
  display: flex;
  color: inherit;
  transition: color 0.18s;
}

/* Responsive Visibility */
.fab-mobile-only {
  display: none !important;
}
.fab-desktop-only {
  display: flex !important;
}
@media (max-width: 768px) {
  .fab-mobile-only {
    display: flex !important;
  }
  .fab-desktop-only {
    display: none !important;
  }
}

/* Tooltip */
.fab-btn[data-tooltip]:hover:after,
.fab-btn[data-tooltip]:focus:after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  top: -36px;
  transform: translateX(-50%);
  background: #222;
  color: #fff;
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 5px;
  white-space: nowrap;
  z-index: 10;
  opacity: 0.97;
  pointer-events: none;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
}

/* Button Animations */
@keyframes fab-fade-in {
  to {
    opacity: 1;
  }
}
.fab-anim-btn-fade {
  animation: fab-fade-in 0.7s both;
}
@keyframes fab-slide-in {
  from {
    transform: translateY(40px);
    opacity: 0;
  }
  to {
    transform: none;
    opacity: 1;
  }
}
.fab-anim-btn-slide {
  animation: fab-slide-in 0.7s both;
}
@keyframes fab-zoom-in {
  from {
    transform: scale(0.4);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}
.fab-anim-btn-zoom {
  animation: fab-zoom-in 0.7s both;
}

/* Icon Animations */
@keyframes fab-icon-pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.23);
  }
}
.fab-anim-icon-pulse .fab-icon {
  animation: fab-icon-pulse 1.3s infinite;
}
@keyframes fab-icon-bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-11px);
  }
}
.fab-anim-icon-bounce .fab-icon {
  animation: fab-icon-bounce 1.1s infinite;
}
@keyframes fab-icon-rotate {
  to {
    transform: rotate(1turn);
  }
}
.fab-anim-icon-rotate .fab-icon {
  animation: fab-icon-rotate 1.2s infinite linear;
}
@keyframes fab-icon-flip {
  0%,
  100% {
    transform: rotateY(0);
  }
  50% {
    transform: rotateY(180deg);
  }
}
.fab-anim-icon-flip .fab-icon {
  animation: fab-icon-flip 1.1s infinite;
}