/*
  [INPUT]: WhatsApp inquiry section markup and theme viewport breakpoints
  [OUTPUT]: Responsive floating direct link button and tooltip presentation
  [POS]: WhatsApp inquiry section visual layer; direct chat trigger with zero forms
  [PROTOCOL]: 变更时更新此头部，然后检查 CLAUDE.md
*/
.whatsapp-inquiry__fab {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 9998;
  display: flex;
  width: 60px;
  height: 60px;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  cursor: pointer;
  box-shadow: 0 4px 14px rgb(37 211 102 / 45%);
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.whatsapp-inquiry__fab::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: rgb(37 211 102 / 35%);
  content: "";
  animation: whatsapp-inquiry-pulse 2s ease-out infinite;
}

.whatsapp-inquiry__fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgb(37 211 102 / 55%);
}

.whatsapp-inquiry__fab:focus-visible {
  outline: 3px solid #075e54;
  outline-offset: 3px;
}

.whatsapp-inquiry__fab svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

.whatsapp-inquiry__tooltip {
  position: absolute;
  top: 50%;
  right: calc(100% + 14px);
  padding: 7px 14px;
  border-radius: 20px;
  background: #fff;
  color: #075e54;
  font-size: 13.5px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgb(0 0 0 / 14%);
  pointer-events: none;
  transform: translateY(-50%);
  animation: whatsapp-inquiry-bounce 2s infinite ease-in-out;
}

.whatsapp-inquiry__tooltip::after {
  position: absolute;
  top: 50%;
  right: -5px;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 6px solid #fff;
  content: "";
  transform: translateY(-50%);
}

@keyframes whatsapp-inquiry-pulse {
  0% {
    opacity: 0.6;
    transform: scale(1);
  }

  100% {
    opacity: 0;
    transform: scale(1.7);
  }
}

@keyframes whatsapp-inquiry-bounce {
  0%,
  100% {
    transform: translateY(-50%) translateX(0);
  }

  50% {
    transform: translateY(-50%) translateX(-4px);
  }
}

@media (max-width: 768px) {
  .whatsapp-inquiry__fab {
    right: auto;
    bottom: 80px;
    left: 16px;
    width: 54px;
    height: 54px;
  }

  .whatsapp-inquiry__fab svg {
    width: 28px;
    height: 28px;
  }

  .whatsapp-inquiry__tooltip {
    right: auto;
    left: calc(100% + 14px);
    animation-name: whatsapp-inquiry-bounce-mobile;
  }

  .whatsapp-inquiry__tooltip::after {
    right: auto;
    left: -5px;
    border-right: 6px solid #fff;
    border-left: 0;
  }
}

@keyframes whatsapp-inquiry-bounce-mobile {
  0%,
  100% {
    transform: translateY(-50%) translateX(0);
  }

  50% {
    transform: translateY(-50%) translateX(4px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-inquiry__fab {
    transition: none;
  }

  .whatsapp-inquiry__fab::before,
  .whatsapp-inquiry__tooltip {
    animation: none;
  }
}