body{margin:0;height:100vh}.app-container{height:100%}.preview-bg{width:100%;height:100%;opacity:.3;background-size:cover}.upload-wrapper{display:flex;flex-direction:column;align-items:center;gap:16px;justify-content:center;height:100%}.drop-zone{width:300px;height:180px;border:2px dashed #888;border-radius:12px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.2s}.drop-zone.dragging{border-color:#42b983;background:#f0fdf4}.hidden-input{display:none}.content{text-align:center;color:#555;position:absolute}.upload-btn{padding:10px 20px;border:none;background:#42b983;color:#fff;border-radius:8px;cursor:pointer}.upload-btn:hover{background:#369870}