/* 1. RESET & BASIC STYLING */
 * {
     margin: 0;
     padding: 0;
     box-sizing: border-box;
 }

 body {
     min-height: 150vh;
     background: #f9f9f9;
 }

 /* 2. WHATSAPP FLOATING BUTTON (LEFT SIDE) */
 .wa-float-btn {
     position: fixed;
     left: 25px;
     bottom: 30px;
     z-index: 9999;
     text-decoration: none;

     /* Hidden by default */
     opacity: 0;
     visibility: hidden;
     transform: translateX(-20px);
     transition: all 0.4s ease-in-out;
 }

 /* Scroll hone par show hoga */
 .wa-float-btn.active {
     opacity: 1;
     visibility: visible;
     transform: translateX(0);
 }

 /* 3. PREMIUM ICON DESIGN (Clean & Professional) */
 .wa-design {
     width: 60px;
     height: 60px;
     background: #25D366;
     border-radius: 50%;
     display: flex;
     align-items: center;
     justify-content: center;
     box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4);
     border: 2px solid white;
     transition: transform 0.3s ease;
 }

 /* WhatsApp Logo (Pure White) */
 .wa-design img {
     width: 34px;
     height: 34px;
     filter: brightness(0) invert(1);
 }

 /* Hover Animation */
 .wa-float-btn:hover .wa-design {
     transform: scale(1.1) rotate(5deg);
     background: #20ba5a;
 }

 /* 4. RESPONSIVENESS */
 @media (max-width: 480px) {
     .wa-design {
         width: 50px;
         height: 50px;
     }

     .wa-design img {
         width: 28px;
         height: 28px;
     }

     .wa-float-btn {
         left: 15px;
         bottom: 20px;
     }
 }