:root{--bg-app:#f4f5f7;--bg-card:#fff;--bg-subtle:#e9ecef;--border-color:#d1d5db;--border-dark:#9ca3af;--text-main:#1f2937;--text-muted:#6b7280;--text-light:#9ca3af;--accent-gray:#374151;--accent-light:#e5e7eb;--font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--radius-lg:14px;--radius-md:10px;--radius-sm:6px;--touch-target:48px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-app);color:var(--text-main);justify-content:center;min-height:100vh;line-height:1.4;display:flex}#root{background-color:var(--bg-app);flex-direction:column;width:100%;max-width:480px;min-height:100vh;display:flex;position:relative;box-shadow:0 0 20px #0000000d}.wireframe-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);margin-bottom:16px;padding:16px}.wireframe-button{min-height:var(--touch-target);border-radius:var(--radius-md);border:1px solid var(--border-dark);background-color:var(--bg-card);color:var(--text-main);cursor:pointer;justify-content:center;align-items:center;width:100%;font-size:15px;font-weight:600;transition:all .15s;display:flex}.wireframe-button:active{background-color:var(--bg-subtle);transform:scale(.99)}.wireframe-button.active{background-color:var(--accent-gray);color:#fff;border-color:var(--accent-gray)}.section-title{text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:10px;font-size:13px;font-weight:700}.app-container{flex-direction:column;flex:1;padding-bottom:90px;display:flex}.app-header{border-bottom:1px solid var(--border-color);z-index:100;background:#fff;justify-content:space-between;align-items:center;padding:12px 16px;display:flex;position:sticky;top:0}.brand-title{letter-spacing:-.5px;color:var(--text-main);align-items:center;gap:6px;font-size:18px;font-weight:800;display:flex}.brand-badge{background:var(--bg-subtle);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-muted);padding:2px 6px;font-size:10px}.user-profile-btn{background:var(--bg-subtle);border:1px solid var(--border-color);border-radius:20px;align-items:center;gap:8px;padding:6px 12px;font-size:13px;font-weight:600;display:flex}.main-content{padding:16px}.category-grid{grid-template-columns:1fr;gap:12px;margin-bottom:20px;display:grid}.category-card{border:2px solid var(--border-color);border-radius:var(--radius-lg);cursor:pointer;background:#fff;padding:16px;transition:all .2s;position:relative}.category-card.selected{border-color:var(--accent-gray);background:#f8fafc;box-shadow:0 4px 12px #0000000f}.category-card-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.category-icon{font-size:24px}.radio-indicator{border:2px solid var(--border-dark);border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;display:flex}.category-card.selected .radio-indicator{border-color:var(--accent-gray);background:var(--accent-gray)}.radio-indicator:after{content:"";background:#fff;border-radius:50%;width:8px;height:8px;display:none}.category-card.selected .radio-indicator:after{display:block}.category-title{margin-bottom:4px;font-size:16px;font-weight:700}.category-desc{color:var(--text-muted);font-size:13px}.option-row{flex-direction:column;gap:8px;margin-bottom:14px;display:flex}.option-row:last-child{margin-bottom:0}.option-label-group{justify-content:space-between;align-items:baseline;display:flex}.option-title{font-size:14px;font-weight:700}.option-subtitle{color:var(--text-muted);font-size:12px}.segmented-control{background:var(--bg-subtle);border-radius:var(--radius-md);border:1px solid var(--border-color);grid-template-columns:1fr 1fr;gap:6px;padding:4px;display:grid}.segmented-btn{border-radius:var(--radius-sm);min-height:40px;color:var(--text-muted);cursor:pointer;background:0 0;border:none;font-size:13px;font-weight:600}.segmented-btn.active{color:var(--text-main);background:#fff;box-shadow:0 1px 3px #0000001a}.checkbox-tile{border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;background:#fff;justify-content:space-between;align-items:center;min-height:48px;padding:12px 14px;display:flex}.checkbox-tile.checked{border-color:var(--accent-gray);background:#f8fafc}.checkbox-box{border:2px solid var(--border-dark);border-radius:6px;justify-content:center;align-items:center;width:22px;height:22px;font-size:14px;font-weight:700;display:flex}.checkbox-tile.checked .checkbox-box{background:var(--accent-gray);border-color:var(--accent-gray);color:#fff}.file-cloud-container{border-radius:var(--radius-md);flex-direction:column;gap:12px;padding:4px;transition:all .2s;display:flex}.file-cloud-container.drag-over{outline:2px dashed var(--accent-gray);background:#e2e8f0}.cloud-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding-bottom:8px;display:flex}.cloud-title-group{color:var(--text-main);align-items:center;gap:8px;font-size:14px;font-weight:700;display:flex}.cloud-count{color:var(--text-muted);background:var(--bg-subtle);border:1px solid var(--border-color);border-radius:12px;padding:2px 8px;font-size:12px;font-weight:600}.file-grid{grid-template-columns:repeat(auto-fill,minmax(125px,1fr));gap:10px;display:grid}.grid-upload-tile{border:2px dashed var(--border-dark);border-radius:var(--radius-md);cursor:pointer;background:#fff;flex-direction:column;justify-content:center;align-items:center;min-height:120px;transition:all .15s;display:flex}.grid-upload-tile:active{background:var(--bg-subtle);transform:scale(.98)}.upload-tile-icon{color:var(--text-muted);margin-bottom:4px;font-size:28px;font-weight:300;line-height:1}.upload-tile-text{color:var(--text-main);font-size:12px;font-weight:700}.file-tile{border:1px solid var(--border-color);border-radius:var(--radius-md);background:#fff;flex-direction:column;padding:8px;display:flex;position:relative;box-shadow:0 1px 4px #00000008}.tile-remove-btn{border:1px solid var(--border-color);cursor:pointer;z-index:10;background:#ffffffe6;border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;display:flex;position:absolute;top:4px;right:4px;box-shadow:0 1px 3px #0000001a}.tile-preview{aspect-ratio:1;border-radius:var(--radius-sm);background:var(--bg-subtle);border:1px solid var(--border-color);justify-content:center;align-items:center;width:100%;margin-bottom:8px;display:flex;overflow:hidden}.tile-img-preview{object-fit:cover;width:100%;height:100%}.tile-icon-only{letter-spacing:.5px;color:var(--text-main);border:1px solid var(--border-color);background:#fff;border-radius:6px;padding:6px 10px;font-size:13px;font-weight:800}.tile-info{flex-direction:column;gap:2px;display:flex}.tile-name{color:var(--text-main);white-space:nowrap;text-overflow:ellipsis;font-size:12px;font-weight:700;line-height:1.2;overflow:hidden}.tile-meta-row{color:var(--text-muted);justify-content:space-between;align-items:center;margin-top:2px;font-size:10px;display:flex}.tile-size{font-weight:600}.tile-tag{text-transform:uppercase;color:var(--text-muted);font-size:9px;font-weight:700}.cloud-empty-hint{color:var(--text-muted);text-align:center;padding:8px 0;font-size:12px;font-style:italic}.bottom-bar{border-top:1px solid var(--border-color);z-index:200;background:#fff;width:100%;max-width:480px;padding:12px 16px;position:fixed;bottom:0;left:50%;transform:translate(-50%);box-shadow:0 -4px 15px #0000000d}.submit-btn{background:var(--accent-gray);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;width:100%;min-height:50px;font-size:16px;font-weight:700}