.wa-float-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
  }

  /* Button */
  .wa-float-btn {
    width: 64px;
    height: 64px;
    background: #25D366;
    border: none;
    border-radius: 50%;
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    outline: none;
  }

  .wa-float-btn:hover,
  .wa-float-btn:focus {
    transform: scale(1.12);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  }

  .wa-float-btn img {
    width: 38px;
    height: 38px;
  }

  /* Pulse animation (subtle attention grabber) */
  .wa-pulse {
    position: absolute;
    top: -4px; left: -4px; right: -4px; bottom: -4px;
    border: 2px solid #25D366;
    border-radius: 50%;
    animation: pulse 2.2s infinite;
    opacity: 0.4;
  }

  @keyframes pulse {
    0% { transform: scale(0.8); opacity: 0.6; }
    70% { transform: scale(1.4); opacity: 0; }
    100% { transform: scale(1.6); opacity: 0; }
  }

  /* Tooltip (desktop hover) */
  .wa-tooltip {
    position: absolute;
    right: 80px;
    bottom: 16px;
    background: #111;
    color: white;
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 14px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.25s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  }

  .wa-float-btn:hover + .wa-tooltip {
    opacity: 1;
    transform: translateX(0);
  }

  /* Popup Menu */
  .wa-popup {
    position: absolute;
    bottom: 90px;
    right: 0;
    width: 260px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.85) translateY(20px);
    transform-origin: bottom right;
    transition: all 0.28s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }

  .wa-popup.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1) translateY(0);
  }

  .wa-popup-header {
    background: #25D366;
    color: white;
    padding: 14px 18px;
    font-size: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .wa-close {
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
  }

  .wa-item {
    display: flex;
    align-items: center;
    padding: 14px 18px;
    color: #111;
    text-decoration: none;
    font-size: 15px;
    border-bottom: 1px solid #eee;
    transition: background 0.2s;
  }

  .wa-item:last-child { border-bottom: none; }

  .wa-item:hover {
    background: #f8f9fa;
  }

  .wa-icon {
    margin-right: 12px;
    font-size: 20px;
    min-width: 24px;
  }

  /* Mobile adjustments */
  @media (max-width: 600px) {
    .wa-float-container { bottom: 16px; right: 16px; }
    .wa-float-btn { width: 58px; height: 58px; }
    .wa-tooltip { display: none; } /* hide tooltip on mobile */
  }