:root{--primary:#2563eb;--primary-hover:#1d4ed8;--bg-color:#f8fafc;--surface:#fff;--text-main:#0f172a;--text-muted:#64748b;--border-color:#e2e8f0;--sidebar-width:400px}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);height:100vh;font-family:Inter,system-ui,-apple-system,sans-serif;overflow:hidden}.app-container{width:100vw;height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background-color:var(--surface);border-right:1px solid var(--border-color);z-index:10;flex-direction:column;display:flex;box-shadow:2px 0 10px #00000008}.sidebar-header{border-bottom:1px solid var(--border-color);padding:24px}.sidebar-header h2{color:var(--text-main);margin-bottom:16px;font-size:1.25rem;font-weight:700}.search-container{position:relative}.search-input{border:1px solid var(--border-color);background-color:var(--bg-color);border-radius:8px;width:100%;padding:12px 16px 12px 40px;font-size:.95rem;transition:all .2s}.search-input:focus{border-color:var(--primary);background-color:var(--surface);outline:none;box-shadow:0 0 0 3px #2563eb1a}.search-icon{color:var(--text-muted);font-size:.9rem;position:absolute;top:50%;left:14px;transform:translateY(-50%)}.form-list{flex:1;padding:16px 12px;overflow-y:auto}.file-group{margin-bottom:12px}.file-group-header{cursor:pointer;color:#334155;-webkit-user-select:none;user-select:none;background-color:#f1f5f9;border-radius:6px;align-items:center;padding:10px 12px;font-weight:600;transition:background-color .2s;display:flex}.file-group-header:hover{background-color:#e2e8f0}.folder-icon{margin-right:10px;font-size:1.2rem}.file-name{font-size:.95rem}.file-group-items{border-left:2px solid #e2e8f0;margin-top:6px;margin-left:20px;padding-left:16px}.form-item{cursor:pointer;border:1px solid #0000;border-radius:6px;align-items:flex-start;margin-bottom:4px;padding:10px 12px;transition:all .2s;display:flex}.form-item:hover{background-color:#f8fafc;transform:translate(4px)}.form-item.active{color:var(--primary);background-color:#eff6ff;border-color:#bfdbfe}.form-item.active .form-name{font-weight:600}.form-info{flex-direction:column;display:flex}.form-name{margin-bottom:4px;font-size:.9rem;line-height:1.4}.form-ms{color:var(--text-muted);background-color:#f1f5f9;border-radius:4px;align-self:flex-start;padding:2px 6px;font-size:.75rem;display:inline-block}.form-item.active .form-ms{color:var(--primary);background-color:#dbeafe}.loading,.no-results{text-align:center;color:var(--text-muted);padding:40px 20px;font-size:.95rem}.main-content{background-color:#e2e8f0;flex-direction:column;flex:1;display:flex}.pdf-viewer-container{flex-direction:column;height:100%;display:flex}.pdf-header{background-color:var(--surface);border-bottom:1px solid var(--border-color);z-index:5;justify-content:space-between;align-items:center;padding:16px 24px;display:flex;box-shadow:0 2px 4px #00000005}.pdf-title-area{flex:1;align-items:center;gap:12px;display:flex;overflow:hidden}.pdf-title-area h3{color:var(--text-main);white-space:nowrap;text-overflow:ellipsis;font-size:1.1rem;font-weight:600;overflow:hidden}.pdf-ms-badge{color:#475569;white-space:nowrap;background-color:#e2e8f0;border-radius:12px;padding:4px 8px;font-size:.8rem;font-weight:500}.download-btn{background-color:var(--primary);color:#fff;border-radius:6px;align-items:center;gap:8px;padding:8px 16px;font-size:.9rem;font-weight:500;text-decoration:none;transition:background-color .2s;display:inline-flex}.download-btn:hover{background-color:var(--primary-hover)}.pdf-frame{background-color:#525659;border:none;flex:1;width:100%}.empty-state{height:100%;color:var(--text-muted);background-color:var(--bg-color);flex-direction:column;justify-content:center;align-items:center;display:flex}.empty-icon{opacity:.5;margin-bottom:16px;font-size:4rem}.empty-state h2{color:var(--text-main);margin-bottom:8px;font-size:1.5rem}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}