.imgb64-tool{max-width:900px;margin:0 auto}.imgb64-tabs{display:flex;gap:0;border-bottom:2px solid var(--gray-200);margin-bottom:24px}.imgb64-tab{padding:12px 28px;border:0;background:0 0;font-size:15px;font-weight:600;color:var(--gray-500);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-2px;transition:color .2s,border-color .2s}.imgb64-tab.active,.imgb64-tab:hover{color:var(--primary-600)}.imgb64-tab.active{border-bottom-color:var(--primary-600)}.imgb64-upload-area{border:2px dashed var(--gray-200);border-radius:12px;padding:60px 40px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;background:#fff}.imgb64-upload-area.drag-over,.imgb64-upload-area:hover{border-color:var(--primary-500);background:var(--gray-50)}.imgb64-upload-area .upload-icon{margin-bottom:16px;color:var(--primary-500)}.imgb64-upload-area h3{font-size:20px;font-weight:600;color:var(--gray-800);margin-bottom:8px}.imgb64-upload-area p{color:var(--gray-500);margin-bottom:20px}.upload-info{margin-top:12px;font-size:13px;color:var(--gray-500)}.imgb64-result{display:flex;flex-direction:column;gap:16px}.imgb64-stats{display:flex;gap:24px;font-size:14px;color:var(--gray-500);flex-wrap:wrap}.imgb64-stats strong{color:var(--gray-800)}.imgb64-output-header{display:flex;justify-content:space-between;align-items:center;font-size:14px;font-weight:600;color:var(--gray-800)}.imgb64-textarea{width:100%;height:220px;padding:12px;border:1px solid var(--gray-200);border-radius:8px;font-family:monospace;font-size:12px;color:var(--gray-800);resize:vertical;box-sizing:border-box;background:var(--gray-50)}.imgb64-textarea:focus{outline:0;border-color:var(--primary-500)}.imgb64-decode-area{display:flex;flex-direction:column;gap:12px}.imgb64-decode-label,.imgb64-preview-area h3{font-size:14px;font-weight:600;color:var(--gray-800)}.imgb64-preview-area{display:flex;flex-direction:column;gap:16px;margin-top:20px;padding-top:20px;border-top:1px solid var(--gray-200)}.imgb64-preview-area h3{font-size:16px}#imgb64Preview{max-width:100%;max-height:400px;border-radius:8px;border:1px solid var(--gray-200)}