:root{--color-bg: #f3f2f1;--color-surface: #ffffff;--color-border: #e1dfdd;--color-border-strong: #c8c6c4;--color-primary: #0078d4;--color-primary-soft: #e5f1fb;--color-primary-text: #ffffff;--color-text: #201f1e;--color-text-muted: #605e5c;--radius-s: 0px;--radius-m: 0px;--shadow-soft: 0 1px 3px rgba(0, 0, 0, .12);--sidebar-collapsed: 56px;--resize-handle: 4px}*,*:before,*:after{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background-color:var(--color-bg);color:var(--color-text)}.app-shell{height:100%;display:flex;flex-direction:column;min-height:0}.app-header{display:flex;align-items:center;justify-content:space-between;padding:0 16px;height:52px;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:0 1px 2px #0000000a;position:relative;z-index:10}.app-header-left{display:flex;align-items:center;gap:10px;min-width:0}.app-logo{width:28px;height:28px;border-radius:0;background:linear-gradient(135deg,#0078d4,#00a4ef);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:14px;flex:0 0 auto}.app-header-titles{display:flex;flex-direction:column;min-width:0}.app-title{font-weight:600;font-size:16px;line-height:1.1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.app-subtitle{font-size:12px;color:var(--color-text-muted);line-height:1.1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.app-header-right{display:flex;align-items:center;gap:12px}.app-search-container{display:flex;align-items:center;gap:6px;background-color:#fff;border:1px solid var(--color-border-strong);border-radius:0;padding:4px 10px;min-width:240px}.app-search-input{border:none;outline:none;background:transparent;font-size:13px;width:100%}.app-search-input::placeholder{color:var(--color-text-muted)}.app-search-clear{border:none;background:transparent;cursor:pointer;color:var(--color-text-muted);font-size:12px;line-height:1}.segmented-toggle{display:inline-flex;border-radius:0;background-color:#f5f5f5;padding:2px;border:1px solid var(--color-border)}.segmented-toggle-btn{border:none;background:transparent;border-radius:0;padding:5px 12px;font-size:13px;cursor:pointer;color:var(--color-text-muted)}.segmented-toggle-btn.is-active{background-color:var(--color-primary);color:var(--color-primary-text)}.header-admin-section{display:flex;align-items:center;gap:6px}.header-admin-label{font-size:12px;color:var(--color-text-muted)}.app-main{flex:1;display:flex;min-height:0;position:relative}.sidebar-wrapper{height:100%;display:flex;transition:width .2s ease}.sidebar-wrapper.is-collapsed{width:var(--sidebar-collapsed)!important}.app-sidebar{width:100%;background-color:#faf9f8;border-right:1px solid var(--color-border);padding:12px;display:flex;flex-direction:column;height:100%;overflow-y:auto}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:4px 8px 6px 4px;border-bottom:1px solid var(--color-border);margin-bottom:10px}.sidebar-title{font-size:11px;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.04em}.sidebar-category{margin-bottom:8px}.sidebar-category-button{width:100%;text-align:left;border:none;background:transparent;padding:8px 10px;border-radius:var(--radius-s);cursor:pointer;font-size:14px;display:flex;justify-content:space-between;align-items:center}.sidebar-category-button:hover{background-color:#f3f2f1}.sidebar-category-button.is-active{background-color:var(--color-primary-soft);color:var(--color-primary);outline:1px solid rgba(0,120,212,.25)}.sidebar-subcategories{margin-top:4px;padding-left:14px}.sidebar-subcategory{border:none;background:transparent;padding:6px 10px;font-size:13px;cursor:pointer;width:100%;text-align:left;border-radius:var(--radius-s);color:var(--color-text-muted)}.sidebar-subcategory:hover{background-color:#f3f2f1}.sidebar-subcategory.is-active{background-color:#e1dfdd;color:var(--color-text)}.app-sidebar-collapsed{width:var(--sidebar-collapsed);min-width:var(--sidebar-collapsed);padding:10px 8px;display:flex;flex-direction:column;border-right:1px solid var(--color-border);background-color:var(--color-surface);height:100%;overflow-y:auto}.sidebar-mini-logo{width:28px;height:28px;border-radius:6px;background:linear-gradient(135deg,#0078d4,#00a4ef);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:13px;margin:0 auto}.sidebar-mini-list{display:flex;flex-direction:column;gap:12px;margin-top:14px;align-items:center}.sidebar-mini-item{width:40px;height:40px;border:none;border-radius:10px;background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center}.sidebar-mini-item svg{width:20px;height:20px;color:var(--color-text-muted)}.sidebar-mini-item:hover{background-color:#e5e5e5}.sidebar-mini-item.is-active{background-color:#d0e7ff}.sidebar-mini-item.is-active svg{color:var(--color-primary)}.panel-toggle-floating{position:absolute;top:50%;transform:translateY(-50%);width:18px;height:18px;background-color:#f5f5f5;border:1px solid var(--color-border);border-left:none;border-radius:0 8px 8px 0;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:250;transition:background-color .2s ease}.panel-toggle-floating:hover{background-color:#e5e5e5}.panel-toggle-floating svg{width:10px;height:10px;color:#555}.app-content,.viewer-layout{flex:1;display:flex;min-width:0;min-height:0}.task-list-wrapper{height:100%;display:flex;min-width:220px;max-width:700px}.task-detail{flex:1;height:100%;overflow-y:auto;min-width:0}.card{background-color:var(--color-surface);border-radius:var(--radius-m);border:1px solid var(--color-border);box-shadow:var(--shadow-soft);padding:12px 14px;height:100%;display:flex;flex-direction:column;min-height:0;width:100%}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.card-title{font-size:15px;font-weight:600}.card-subtitle{font-size:12px;color:var(--color-text-muted)}.task-items{list-style:none;margin:6px 0 0;padding:0;overflow-y:auto;min-height:0}.task-item{border-radius:var(--radius-s);border:1px solid transparent;padding:10px;font-size:13px;cursor:pointer;display:flex;flex-direction:column;gap:2px}.task-item:hover{background-color:#f3f2f1}.task-item.is-active{background-color:var(--color-primary-soft);border-color:var(--color-primary)}.task-item-title{font-weight:600}.task-item-description{font-size:12px;color:var(--color-text-muted)}.task-detail h3{margin-top:0;margin-bottom:6px}.task-detail-description{font-size:13px;color:var(--color-text-muted);margin-bottom:10px}.task-steps{padding-left:20px;margin:0}.task-steps li{margin-bottom:6px}.task-step-text{white-space:pre-line}.admin-panel{width:100%;max-width:980px;display:flex;flex-direction:column;gap:12px;padding:12px}.admin-toolbar{display:flex;justify-content:space-between;align-items:center;gap:8px}.admin-task-list{list-style:none;padding:0;margin:8px 0 0}.admin-task-item{border-radius:var(--radius-s);border:1px solid var(--color-border);padding:10px 12px;margin-bottom:8px;display:flex;justify-content:space-between;align-items:center}.admin-task-meta{display:flex;flex-direction:column;gap:2px}.admin-task-id{font-size:11px;color:var(--color-text-muted)}.form-grid{display:grid;grid-template-columns:1fr;gap:8px}.form-field label{display:block;font-size:12px;font-weight:500;margin-bottom:4px}.form-input,.form-textarea{width:100%;padding:8px 10px;border-radius:var(--radius-s);border:1px solid var(--color-border-strong);font-size:13px;font-family:inherit}.form-textarea{resize:vertical;min-height:92px}.steps-list{display:flex;flex-direction:column;gap:6px;margin-top:6px}.step-row{display:flex;gap:6px}.step-row .form-input,.step-row .form-textarea{flex:1}.btn{border-radius:var(--radius-s);border:1px solid var(--color-border-strong);padding:7px 12px;font-size:13px;background-color:var(--color-surface);cursor:pointer}.btn:hover{background-color:#f3f2f1}.btn-primary{background-color:var(--color-primary);color:var(--color-primary-text);border-color:var(--color-primary);min-width:120px}.btn-primary:hover{background-color:#106ebe}.btn-danger{border-color:#d83b01;color:#d83b01}.btn-danger:hover{background-color:#fde7e0}.btn-ghost{border-color:transparent;background-color:transparent}.modal-backdrop{position:fixed;inset:0;background:#00000059;display:flex;align-items:center;justify-content:center;z-index:1000}.modal-dialog{background-color:var(--color-surface);border-radius:var(--radius-m);border:1px solid var(--color-border);box-shadow:0 8px 24px #00000040;max-width:420px;width:calc(100% - 32px);overflow:hidden}.modal-header{padding:12px 16px 4px}.modal-title{font-size:15px;font-weight:600}.modal-body{padding:0 16px 12px;font-size:13px;color:var(--color-text)}.modal-footer{padding:10px 16px 12px;display:flex;justify-content:flex-end;gap:8px;background-color:#faf9f8}.login-error{color:#d83b01;font-size:12px;margin-top:4px}.resize-handle{width:var(--resize-handle);cursor:col-resize;position:relative;flex:0 0 auto;z-index:8}.resize-handle:before{content:"";position:absolute;inset:15% 1px;background-color:var(--color-border);opacity:.85}.resize-handle:hover:before{background-color:var(--color-border-strong)}.sidebar-resize-handle,.task-resize-handle{background:transparent}.drop-target{position:relative}.drop-target:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background-color:var(--color-primary)}@media(max-width:800px){.app-header{flex-wrap:wrap;height:auto;padding:8px 10px;gap:8px;align-items:flex-start}.app-header-left{flex:1 0 100%}.app-header-right{flex:1 0 100%;justify-content:space-between;flex-wrap:wrap;gap:8px}.app-search-container{flex:1 1 100%;min-width:0}.app-main{flex-direction:column}.sidebar-wrapper{width:100%!important}.app-sidebar,.app-sidebar-collapsed{border-right:none;border-bottom:1px solid var(--color-border);height:auto;max-height:320px}.panel-toggle-floating,.resize-handle{display:none}.viewer-layout{flex-direction:column}.task-list-wrapper{width:100%!important;max-width:none;min-width:0}.task-detail{margin-top:8px}.card{border-radius:0}}