.upload-section{border:1px solid var(--border);border-radius:var(--radius-xl);max-width:980px;box-shadow:var(--shadow);background:linear-gradient(#ffffff09,#ffffff03);padding:18px}.upload-dropzone{border-radius:var(--radius-xl);text-align:center;cursor:pointer;background:radial-gradient(circle at 10% 0,#4c9cff24,#4c9cff00 45%),linear-gradient(#ffffff08,#ffffff03);border:2px dashed #b8c5da4d;margin-bottom:22px;padding:40px 28px;transition:all .2s;position:relative}.upload-dropzone:hover,.upload-dropzone.drag-over{background:radial-gradient(circle at 10% 0,#4c9cff38,#4c9cff00 55%),#ffffff0a;border-color:#4c9cffb8}.upload-dropzone input[type=file]{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;inset:0}.upload-icon{color:var(--text-muted);margin-bottom:10px;font-size:36px;display:block}.upload-hint{color:var(--text-secondary);margin-bottom:4px;font-size:15px}.upload-hint strong{color:var(--text-primary)}.upload-hint-sub{color:var(--text-muted);letter-spacing:.05em;text-transform:uppercase;font-size:12px}.upload-file-info{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:left;align-items:flex-start;gap:10px;margin-top:12px;padding:12px 16px;display:none}.upload-file-info.visible{display:flex}.upload-file-icon{flex-shrink:0;font-size:24px}.upload-file-details{flex:1;min-width:0}.upload-file-name{white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:500;overflow:hidden}.upload-file-meta{color:var(--text-secondary);margin-top:2px;font-size:12px}.upload-error{background:var(--error-bg);border-radius:var(--radius);color:#ffdbe1;border:1px solid #ff6d8066;margin-top:10px;padding:10px 14px;font-size:13px;display:none}.upload-error.visible{display:block}.upload-description-wrap{margin-top:12px;display:none}.upload-description-wrap.visible{display:block}.upload-progress-wrap{margin-top:14px;display:none}.upload-progress-wrap.visible{display:block}.upload-progress-label{color:var(--text-secondary);justify-content:space-between;margin-bottom:6px;font-size:12px;display:flex}.upload-btn-row{align-items:center;gap:8px;margin-top:14px;display:none}.upload-btn-row.visible{display:flex}.upload-status{color:var(--text-secondary);min-height:20px;margin-top:10px;font-size:13px}.upload-status.success{color:var(--success)}.upload-status.error{color:var(--error)}.format-hint{flex-wrap:wrap;justify-content:center;gap:6px;margin-top:14px;display:flex}.format-pill{text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);background:#ffffff0a;border:1px solid #ffffff1f;border-radius:99px;padding:3px 8px;font-size:10px;font-weight:600}