/* ===== ENHANCED FLOATING WHATSAPP BUTTON ===== */
    .whatsapp-floating {
      position: fixed;
      bottom: 20px;
      right: 20px;
      z-index: 1000;
      margin-bottom: 120px;
      margin-right: 20px;
    }

    .whatsapp-btn {
      position: relative;
      background: red;
      width: 80px;
      height: 80px;
      display: flex;
      justify-content: center;
      align-items: center;
      border-radius: 50%;
      text-decoration: none;
      border: 3px solid #e5ff52;
      box-shadow: 0 8px 25px rgba(255, 0, 0, 0.4);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      overflow: hidden;
      animation: pulse 2s infinite;
    }

    /* Ripple effect background */
    .whatsapp-btn::before {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 0;
      height: 0;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.3);
      transition: all 0.3s ease;
      transform: translate(-50%, -50%);
    }

    .whatsapp-btn:hover::before {
      width: 100%;
      height: 100%;
    }

    .whatsapp-btn:hover {
      background: #e5ff52;
      border-color: red;
      transform: scale(1.1);
      box-shadow: 0 12px 35px rgba(229, 255, 82, 0.5);
    }

    .whatsapp-btn:active {
      transform: scale(0.95);
    }

    .whatsapp-btn img {
      width: 45px;
      height: 45px;
      transition: all 0.3s ease;
      position: relative;
      z-index: 2;
      filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    }

    .whatsapp-btn:hover img {
      transform: rotate(10deg) scale(1.1);
      filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    }

    /* Floating animation */
    @keyframes pulse {
      0% {
        box-shadow: 0 8px 25px rgba(255, 0, 0, 0.4), 0 0 0 0 rgba(255, 0, 0, 0.7);
      }
      70% {
        box-shadow: 0 8px 25px rgba(255, 0, 0, 0.4), 0 0 0 15px rgba(255, 0, 0, 0);
      }
      100% {
        box-shadow: 0 8px 25px rgba(255, 0, 0, 0.4), 0 0 0 0 rgba(255, 0, 0, 0);
      }
    }

    /* Floating bounce animation */
    @keyframes float {
      0%, 100% {
        transform: translateY(0);
      }
      50% {
        transform: translateY(-10px);
      }
    }

    .whatsapp-btn {
      animation: pulse 2s infinite, float 3s ease-in-out infinite;
    }

    /* Message tooltip */
    .whatsapp-tooltip {
      position: absolute;
      right: 100%;
      top: 50%;
      transform: translateY(-50%);
      background: white;
      color: #333;
      padding: 12px 20px;
      border-radius: 25px;
      font-size: 14px;
      font-weight: bold;
      white-space: nowrap;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
      border: 2px solid #e5ff52;
      margin-right: 20px;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      z-index: 3;
    }

    .whatsapp-tooltip::after {
      content: '';
      position: absolute;
      left: 100%;
      top: 50%;
      transform: translateY(-50%);
      border: 10px solid transparent;
      border-left-color: white;
    }

    .whatsapp-tooltip::before {
      content: '';
      position: absolute;
      left: 100%;
      top: 50%;
      transform: translateY(-50%);
      border: 12px solid transparent;
      border-left-color: #e5ff52;
      margin-left: 2px;
    }

    .whatsapp-btn:hover .whatsapp-tooltip {
      opacity: 1;
      visibility: visible;
      transform: translateY(-50%) translateX(-10px);
    }

    /* Click ripple effect */
    .click-ripple {
      position: absolute;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.6);
      transform: scale(0);
      animation: ripple-expand 0.6s linear;
      pointer-events: none;
    }

    @keyframes ripple-expand {
      to {
        transform: scale(4);
        opacity: 0;
      }
    }

    /* Online indicator */
    .online-indicator {
      position: absolute;
      top: 5px;
      right: 5px;
      width: 20px;
      height: 20px;
      background: #4CAF50;
      border-radius: 50%;
      border: 3px solid white;
      animation: blink 2s infinite;
    }

    @keyframes blink {
      0%, 50% { opacity: 1; }
      51%, 100% { opacity: 0.3; }
    }

    /* Mobile responsiveness */
    @media (max-width: 768px) {
      .whatsapp-floating {
        bottom: 15px;
        right: 15px;
        margin-bottom: 100px;
        margin-right: 10px;
      }

      .whatsapp-btn {
        width: 70px;
        height: 70px;
      }

      .whatsapp-btn img {
        width: 40px;
        height: 40px;
      }

      .whatsapp-tooltip {
        font-size: 12px;
        padding: 10px 15px;
        margin-right: 15px;
      }

      .online-indicator {
        width: 16px;
        height: 16px;
        top: 3px;
        right: 3px;
      }
    }

    @media (max-width: 480px) {
      .whatsapp-btn {
        width: 60px;
        height: 60px;
      }

      .whatsapp-btn img {
        width: 35px;
        height: 35px;
      }

      .whatsapp-tooltip {
        font-size: 11px;
        padding: 8px 12px;
      }
    }

    /* Accessibility */
    .whatsapp-btn:focus {
      outline: 3px solid #e5ff52;
      outline-offset: 2px;
    }

    /* Print styles */
    @media print {
      .whatsapp-floating {
        display: none;
      }
    }

    /* Dark mode support */
    @media (prefers-color-scheme: dark) {
      .whatsapp-tooltip {
        background: #2d2d2d;
        color: white;
        border-color: #e5ff52;
      }
      
      .whatsapp-tooltip::after {
        border-left-color: #2d2d2d;
      }
    }