.gradient-bg{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}.file-drop-area{border:2px dashed #cbd5e0;transition:all 0.3s ease}.file-drop-area.active{border-color:#667eea;background-color:rgb(102 126 234 / .05)}.converted-image{box-shadow:0 10px 25px -5px rgb(0 0 0 / .1);transition:transform 0.3s ease}.converted-image:hover{transform:scale(1.02)}.download-btn{background:linear-gradient(to right,#4CAF50,#2E7D32);transition:all 0.3s ease}.download-btn:hover{background:linear-gradient(to right,#2E7D32,#1B5E20);transform:translateY(-2px)}.convert-btn{background:linear-gradient(to right,#667eea,#764ba2);transition:all 0.3s ease}.convert-btn:hover{background:linear-gradient(to right,#5a67d8,#6b46c1);transform:translateY(-2px)}.conversion-process{animation:pulse 2s infinite}@keyframes pulse{0%{opacity:1}50%{opacity:.7}100%{opacity:1}}