.upload-box{text-align:center;background-color:#f8fafc;border:2px dashed #007bff;border-radius:12px;padding:2rem;transition:all .3s}.upload-box:hover{background-color:#e9f3ff;transform:scale(1.02)}.preview-card{text-align:center;margin:.5rem;position:relative}.remove-btn{border-radius:50%;padding:4px 6px;position:absolute;top:0;right:0}.gradient-btn{background:linear-gradient(135deg,#007bff,#00c6ff);border:none;border-radius:10px;font-weight:600;transition:all .3s}.gradient-btn:hover{transform:translateY(-2px);box-shadow:0 6px 15px #007bff66}