@import "https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap";:root{--surface:#0c0e14;--surface-elevated:#12151e;--surface-hover:#1a1f2e;--border:#252b3b;--text:#e8ecf4;--text-muted:#8b95a8;--accent:#22d3a8;--accent-soft:#22d3a81f;--editor-bg:#0a0c10;--editor-text:#c8d0e0;--code-inline-bg:#1e2433;--success:#22d3a8;--warning:#fbbf24;--scrollbar-size:9px;--scrollbar-track:#0e1118;--scrollbar-thumb:#2a3347;--scrollbar-thumb-hover:#3a4760;--scrollbar-thumb-active:#22d3a8;--scrollbar-corner:#0c0e14}[data-theme=light]{--surface:#f5f5f5;--surface-elevated:#fff;--surface-hover:#f0f0f0;--border:#e0e0e0;--text:#1a1a1a;--text-muted:#666;--accent:#22d3a8;--accent-soft:#22d3a826;--editor-bg:#fafafa;--editor-text:#333;--code-inline-bg:#f0f0f0;--success:#22d3a8;--warning:#f59e0b;--scrollbar-track:#f0f0f0;--scrollbar-thumb:#d0d0d0;--scrollbar-thumb-hover:#b0b0b0;--scrollbar-thumb-active:#22d3a8;--scrollbar-corner:#f5f5f5}*,:before,:after{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--surface);color:var(--text);-webkit-font-smoothing:antialiased;font-family:DM Sans,system-ui,sans-serif}:is(.lesson-nav,.lesson-panel,.cheatsheet-workspace,.editor-textarea,.concepts-view,.cheatsheet,.concept-inline-example,.concept-example,.cheatsheet-card .example){scrollbar-width:thin;scrollbar-color:var(--scrollbar-thumb) var(--scrollbar-track)}:is(.lesson-nav,.lesson-panel,.cheatsheet-workspace,.editor-textarea,.concepts-view,.cheatsheet,.concept-inline-example,.concept-example,.cheatsheet-card .example)::-webkit-scrollbar{width:var(--scrollbar-size);height:var(--scrollbar-size)}:is(.lesson-nav,.lesson-panel,.cheatsheet-workspace,.editor-textarea,.concepts-view,.cheatsheet,.concept-inline-example,.concept-example,.cheatsheet-card .example)::-webkit-scrollbar-track{background:var(--scrollbar-track);border-radius:100px}:is(.lesson-nav,.lesson-panel,.cheatsheet-workspace,.editor-textarea,.concepts-view,.cheatsheet,.concept-inline-example,.concept-example,.cheatsheet-card .example)::-webkit-scrollbar-thumb{background:linear-gradient(180deg, var(--scrollbar-thumb), #252d3d);border:2px solid var(--scrollbar-track);border-radius:100px}:is(.lesson-nav,.lesson-panel,.cheatsheet-workspace,.editor-textarea,.concepts-view,.cheatsheet,.concept-inline-example,.concept-example,.cheatsheet-card .example)::-webkit-scrollbar-thumb:hover{background:var(--scrollbar-thumb-hover)}:is(.lesson-nav,.lesson-panel,.cheatsheet-workspace,.editor-textarea,.concepts-view,.cheatsheet,.concept-inline-example,.concept-example,.cheatsheet-card .example)::-webkit-scrollbar-thumb:active{background:var(--scrollbar-thumb-active);border-color:#22d3a840}:is(.lesson-nav,.lesson-panel,.cheatsheet-workspace,.editor-textarea)::-webkit-scrollbar-corner{background:var(--scrollbar-corner)}.flexlayout__layout,.flexlayout__tabset{background-color:var(--surface)!important}.flexlayout__tabset_header,.flexlayout__tabset_header_outer,.flexlayout__tabset_header_inner{background-color:var(--surface)!important;border-bottom:1px solid var(--border)!important}.flexlayout__tabset_header_outer{box-shadow:none!important}.flexlayout__tab_button{color:var(--text-muted)!important;box-shadow:none!important;border:none!important;border-right:1px solid var(--border)!important;background-color:#0000!important;border-top-left-radius:6px!important;border-top-right-radius:6px!important;transition:all .2s!important}.flexlayout__tab_button:hover:not(.flexlayout__tab_button--selected){background-color:var(--surface-hover)!important;color:var(--text)!important}.flexlayout__splitter{background-color:#0000!important}.flexlayout__splitter:hover,.flexlayout__splitter_drag{background-color:var(--accent)!important}.flexlayout__tab{background-color:var(--surface-elevated)!important}.flexlayout__layout{--color-text:#eee;--color-background:black;--color-base:black;--color-1:#121212;--color-2:#1a1a1a;--color-3:#262626;--color-4:#333;--color-5:#404040;--color-6:#4d4d4d;--color-drag1:#cfe8ff;--color-drag2:#b7d1b5;--color-drag1-background:#80808026;--color-drag2-background:#80808026;--font-size:medium;--font-family:Roboto, Arial, sans-serif;--font-weight:normal;--splitter-size:8px;--splitter-active-size:8px;--splitter-handle-visibility:hidden;--color-overflow:gray;--color-icon:gray;--color-tabset-background:var(--color-1);--color-tabset-background-selected:var(--color-1);--color-tabset-background-maximized:var(--color-6);--color-tabset-divider-line:var(--color-4);--color-border-tab-content:var(--color-background);--color-border-background:var(--color-1);--color-border-divider-line:var(--color-4);--color-tab-content:var(--color-background);--color-tab-selected:var(--color-text);--color-tab-selected-background:var(--color-4);--color-tab-unselected:gray;--color-tab-unselected-background:transparent;--color-tab-textbox:var(--color-text);--color-tab-textbox-background:var(--color-3);--color-border-tab-selected:var(--color-text);--color-border-tab-selected-background:var(--color-4);--color-border-tab-unselected:gray;--color-border-tab-unselected-background:var(--color-2);--color-splitter:var(--color-2);--color-splitter-hover:var(--color-4);--color-splitter-drag:var(--color-5);--color-splitter-handle:var(--color-3);--color-drag-rect-border:var(--color-4);--color-drag-rect-background:var(--color-1);--color-drag-rect:var(--color-text);--color-popup-border:var(--color-6);--color-popup-unselected:var(--color-text);--color-popup-unselected-background:var(--color-background);--color-popup-selected:var(--color-text);--color-popup-selected-background:var(--color-4);--color-edge-marker:gray;--color-edge-icon:#eee;--color-mini-scroll-indicator:#80808080;--color-mini-scroll-indicator-hovered:#808080cc;--size-mini-scroll-indicator:3px;--color-toolbar-button-hover:var(--color-4);--color-float-window-header-background:var(--color-tabset-background);background-color:var(--color-background);display:flex;position:absolute;inset:0}.flexlayout__layout_metrics{position:absolute;top:-30000px}.flexlayout__layout_overlay{z-index:1000;position:absolute;inset:0}.flexlayout__layout_tab_stamps{z-index:100;flex-direction:column;align-items:flex-start;display:flex;position:absolute;top:-10000px}.flexlayout__layout_moveables_home{visibility:hidden;width:100px;height:100px;position:absolute;top:-20000px}.flexlayout__layout_main{flex-grow:1;flex-basis:0;min-width:0;min-height:0;display:flex;position:relative}.flexlayout__layout_border_container,.flexlayout__layout_border_container_inner{flex-grow:1;flex-basis:0;min-width:0;min-height:0;display:flex}.flexlayout__splitter{background-color:var(--color-splitter);touch-action:none;z-index:10;justify-content:center;align-items:center;display:flex;position:relative}.flexlayout__splitter_horz{width:var(--splitter-size);min-width:var(--splitter-size)}.flexlayout__splitter_horz:before{content:"";width:var(--splitter-active-size);z-index:1;position:absolute;top:0;bottom:0;left:50%;transform:translate(-50%)}.flexlayout__splitter_vert{height:var(--splitter-size);min-height:var(--splitter-size)}.flexlayout__splitter_vert:before{content:"";height:var(--splitter-active-size);z-index:1;position:absolute;top:50%;left:0;right:0;transform:translateY(-50%)}@media (hover:hover){.flexlayout__splitter:hover{background-color:var(--color-splitter-hover);border-radius:5px;transition:background-color .1s ease-in 50ms}}.flexlayout__splitter_drag{z-index:1000;background-color:var(--color-splitter-drag);border-radius:5px;justify-content:center;align-items:center;display:flex;position:absolute}.flexlayout__splitter_handle{background-color:var(--color-splitter-handle);visibility:var(--splitter-handle-visibility);border-radius:3px}.flexlayout__splitter_handle_horz{width:3px;height:30px}.flexlayout__splitter_handle_vert{width:30px;height:3px}.flexlayout__splitter_extra{touch-action:none;background-color:#0000}.flexlayout__outline_rect{pointer-events:none;box-sizing:border-box;border:2px solid var(--color-drag1);background:var(--color-drag1-background);z-index:1000;border-radius:5px;position:absolute}.flexlayout__outline_rect_edge{pointer-events:none;border:2px solid var(--color-drag2);background:var(--color-drag2-background);z-index:1000;box-sizing:border-box;border-radius:5px}.flexlayout__edge_rect{z-index:1000;background-color:var(--color-edge-marker);pointer-events:none;justify-content:center;align-items:center;display:flex;position:absolute}.flexlayout__drag_rect{color:var(--color-drag-rect);background-color:var(--color-drag-rect-background);border:2px solid var(--color-drag-rect-border);box-sizing:border-box;word-wrap:break-word;font-size:var(--font-size);font-family:var(--font-family);border-radius:5px;flex-direction:column;justify-content:center;padding:.3em .8em;display:flex;overflow:hidden}.flexlayout__row{box-sizing:border-box;flex-basis:0;min-width:0;min-height:0;display:flex;position:relative;overflow:hidden}.flexlayout__tabset{background-color:var(--color-tabset-background);box-sizing:border-box;font-family:var(--font-family);flex-direction:column;flex-grow:1;display:flex;position:relative;overflow:hidden}.flexlayout__tabset_container{flex-direction:column;flex-grow:1;flex-basis:0;min-width:0;min-height:0;display:flex;overflow:hidden}.flexlayout__tabset_tab_divider{width:4px}.flexlayout__tabset_content{box-sizing:border-box;flex-grow:1;flex-basis:0;min-width:0;min-height:0;display:flex;position:relative}.flexlayout__tabset_leading{display:flex}.flexlayout__tabset_tabbar_outer{box-sizing:border-box;background-color:var(--color-tabset-background);min-height:1.5em;font-size:var(--font-size);font-weight:var(--font-weight);align-items:center;display:flex;overflow:hidden}.flexlayout__tabset_tabbar_outer_top{border-bottom:1px solid var(--color-tabset-divider-line);padding:0 2px}.flexlayout__tabset_tabbar_outer_bottom{border-top:1px solid var(--color-tabset-divider-line);padding:0 2px}.flexlayout__tabset_tabbar_inner{box-sizing:border-box;scrollbar-width:none;flex-grow:1;display:flex;position:relative}.flexlayout__tabset_tabbar_inner::-webkit-scrollbar{display:none}.flexlayout__tabset_tabbar_inner_tab_container{box-sizing:border-box;white-space:nowrap;align-items:center;padding-left:4px;padding-right:4px;display:flex;position:relative}.flexlayout__tabset_tabbar_inner_tab_container_top{border-top:2px solid #0000}.flexlayout__tabset_tabbar_inner_tab_container_bottom{border-bottom:2px solid #0000}.flexlayout__tabset-selected{background-color:var(--color-tabset-background-selected)}.flexlayout__tabset-maximized{background-color:var(--color-tabset-background-maximized)}.flexlayout__tab_button_stamp{white-space:nowrap;box-sizing:border-box;align-items:center;gap:.3em;display:inline-flex}.flexlayout__tab{box-sizing:border-box;background-color:var(--color-tab-content);color:var(--color-text);position:relative;overflow:hidden}.flexlayout__tab_moveable{box-sizing:border-box;min-width:1px;height:100%;min-height:1px;position:relative;overflow:auto}.flexlayout__tab_overlay{z-index:20;background-color:#0000003d;position:absolute;inset:0}.flexlayout__tab_layout_container{box-sizing:border-box;height:100%;position:relative}.flexlayout__tab_layout_container_user{box-sizing:border-box;flex-grow:1;position:relative}.flexlayout__tab_button{box-sizing:border-box;font-weight:var(--font-weight);cursor:pointer;align-items:center;gap:.3em;padding:3px .5em;display:flex}.flexlayout__tab_button_stretch{color:var(--color-tab-selected);text-wrap:nowrap;box-sizing:border-box;cursor:pointer;background-color:#0000;align-items:center;gap:.3em;width:100%;padding:3px 0;display:flex}@media (hover:hover){.flexlayout__tab_button_stretch:hover{color:var(--color-tab-selected)}}.flexlayout__tab_button--selected{background-color:var(--color-tab-selected-background);color:var(--color-tab-selected)}@media (hover:hover){.flexlayout__tab_button:hover{color:var(--color-tab-selected)}}.flexlayout__tab_button--unselected{background-color:var(--color-tab-unselected-background);color:var(--color-tab-unselected)}.flexlayout__tab_button_leading{display:flex}.flexlayout__tab_button_content{text-wrap:nowrap;display:flex}.flexlayout__tab_button_textbox{font-family:var(--font-family);font-size:var(--font-size);font-weight:var(--font-weight);color:var(--color-tab-textbox);background-color:var(--color-tab-textbox-background);border:none;border:1px inset var(--color-1);border-radius:3px;width:10em}.flexlayout__tab_button_textbox:focus{outline:none}.flexlayout__tab_button_trailing{visibility:hidden;border-radius:4px;display:flex}.flexlayout__tab_button_trailing:hover{background-color:var(--color-toolbar-button-hover)}@media (hover:hover){.flexlayout__tab_button:hover .flexlayout__tab_button_trailing{visibility:visible}}.flexlayout__tab_button--selected .flexlayout__tab_button_trailing{visibility:visible}.flexlayout__tab_button_overflow{color:var(--color-overflow);font-size:inherit;background-color:#0000;border:none;align-items:center;width:2em;display:flex;overflow:hidden}.flexlayout__tab_toolbar{align-items:center;gap:.3em;padding-left:.5em;padding-right:.3em;display:flex}.flexlayout__tab_toolbar_icon{font-size:inherit;background-color:#0000;border:none;outline:none;margin:0;padding:1px}.flexlayout__tab_toolbar_button{font-size:inherit;background-color:#0000;border:none;border-radius:4px;outline:none;margin:0;padding:1px}@media (hover:hover){.flexlayout__tab_toolbar_button:hover{background-color:var(--color-toolbar-button-hover)}}.flexlayout__tab_toolbar_sticky_buttons_container{align-items:center;gap:.3em;padding-left:5px;display:flex}.flexlayout__border{box-sizing:border-box;font-family:var(--font-family);font-size:var(--font-size);font-weight:var(--font-weight);color:var(--color-border);background-color:var(--color-border-background);display:flex;overflow:hidden}.flexlayout__border_tab_contents{box-sizing:border-box;background-color:var(--color-border-tab-content);overflow:hidden}.flexlayout__border_leading{display:flex}.flexlayout__border_top{border-bottom:1px solid var(--color-border-divider-line);align-items:center}.flexlayout__border_bottom{border-top:1px solid var(--color-border-divider-line);align-items:center}.flexlayout__border_left{border-right:1px solid var(--color-border-divider-line);flex-direction:column;align-content:center}.flexlayout__border_right{border-left:1px solid var(--color-border-divider-line);flex-direction:column;align-content:center}.flexlayout__border_inner{box-sizing:border-box;scrollbar-width:none;flex-grow:1;align-items:center;display:flex;position:relative}.flexlayout__border_inner::-webkit-scrollbar{display:none}.flexlayout__border_inner_tab_container{white-space:nowrap;box-sizing:border-box;align-items:center;padding-left:2px;padding-right:2px;display:flex;position:absolute}.flexlayout__border_inner_tab_container_right{transform-origin:0 0;transform:rotate(90deg)}.flexlayout__border_inner_tab_container_left{transform-origin:100% 0;flex-direction:row-reverse;transform:rotate(-90deg)}.flexlayout__border_tab_divider{width:4px}.flexlayout__border_button{cursor:pointer;box-sizing:border-box;white-space:nowrap;font-weight:var(--font-weight);align-items:center;gap:.3em;margin:2px 0;padding:3px .5em;display:flex}.flexlayout__border_button--selected{background-color:var(--color-border-tab-selected-background);color:var(--color-border-tab-selected)}@media (hover:hover){.flexlayout__border_button:hover{color:var(--color-border-tab-selected)}}.flexlayout__border_button--unselected{background-color:var(--color-border-tab-unselected-background);color:var(--color-border-tab-unselected)}.flexlayout__border_button_leading,.flexlayout__border_button_content{display:flex}.flexlayout__border_button_trailing{visibility:hidden;border-radius:4px;display:flex}@media (hover:hover){.flexlayout__border_button:hover .flexlayout__border_button_trailing{visibility:visible}}.flexlayout__border_button--selected .flexlayout__border_button_trailing{visibility:visible}.flexlayout__border_toolbar{align-items:center;gap:.3em;display:flex}.flexlayout__border_toolbar_left,.flexlayout__border_toolbar_right{flex-direction:column;padding-top:.5em;padding-bottom:.3em}.flexlayout__border_toolbar_top,.flexlayout__border_toolbar_bottom{padding-left:.5em;padding-right:.3em}.flexlayout__border_toolbar_button{font-size:inherit;background-color:#0000;border:none;border-radius:4px;outline:none;padding:1px}@media (hover:hover){.flexlayout__border_toolbar_button:hover{background-color:var(--color-toolbar-button-hover)}}.flexlayout__border_toolbar_button_overflow{color:var(--color-overflow);font-size:inherit;background-color:#0000;border:none;align-items:center;width:1.5em;display:flex}.flexlayout__popup_menu{font-size:var(--font-size);font-family:var(--font-family);font-weight:var(--font-weight)}.flexlayout__popup_menu_item{white-space:nowrap;cursor:pointer;border-radius:2px;padding:2px .5em}.flexlayout__popup_menu_item--selected{background-color:var(--color-tab-selected-background);color:var(--color-tab-selected);font-weight:500}@media (hover:hover){.flexlayout__popup_menu_item:hover{background-color:var(--color-6)}}.flexlayout__popup_menu_container{border:1px solid var(--color-popup-border);color:var(--color-popup-unselected);background:var(--color-popup-unselected-background);z-index:3000;border-radius:3px;min-width:100px;max-height:50%;padding:2px;position:absolute;overflow:auto;box-shadow:inset 0 0 5px #00000026}.flexlayout__float_window{box-sizing:border-box;background-color:var(--color-tabset-background);z-index:2000;border-radius:5px;flex-direction:column;display:flex;overflow:hidden;box-shadow:0 0 10px #00000080}.flexlayout__float_window_header{background-color:var(--color-float-window-header-background);border-bottom:1px solid var(--color-tabset-divider-line);cursor:move;-webkit-user-select:none;user-select:none;font-family:var(--font-family);align-items:center;min-height:15px;padding:2px 8px;font-size:.8em;display:flex}.flexlayout__float_window_content{flex-direction:column;flex-grow:1;min-width:0;min-height:0;margin:5px;display:flex;position:relative;overflow:auto}.flexlayout__floating_window _body{height:100%}.flexlayout__floating_window_content{position:absolute;inset:0}.flexlayout__error_boundary_container{justify-content:center;display:flex;position:absolute;inset:0}.flexlayout__error_boundary_content{align-items:center;display:flex}.flexlayout__border_sizer{font-size:var(--font-size);font-family:var(--font-family);font-weight:var(--font-weight);padding-top:6px;padding-bottom:5px;position:absolute}.flexlayout__mini_scrollbar{background-color:var(--color-mini-scroll-indicator);width:var(--size-mini-scroll-indicator);height:var(--size-mini-scroll-indicator);visibility:hidden;opacity:0;border-radius:5px;transition:opacity .3s ease-in-out,visibility .3s ease-in-out;position:absolute}.flexlayout__mini_scrollbar:hover{background-color:var(--color-mini-scroll-indicator-hovered);transition:background-color .3s ease-in-out}.flexlayout__mini_scrollbar_container{flex-grow:1;display:flex;position:relative;overflow:hidden}@media (hover:hover){.flexlayout__mini_scrollbar_container:hover .flexlayout__mini_scrollbar{opacity:1;visibility:visible}}.flexlayout__tabset-selected{background-image:linear-gradient(var(--color-background), var(--color-4))}.flexlayout__tabset-maximized{background-image:linear-gradient(var(--color-6), var(--color-2))}.flexlayout__tab_top{border-top-left-radius:3px;border-top-right-radius:3px;box-shadow:inset -2px 0 5px #0000001a}.flexlayout__tab_bottom{border-bottom-right-radius:3px;border-bottom-left-radius:3px;box-shadow:inset -2px 0 5px #0000001a}.flexlayout__border_button{border-radius:3px;box-shadow:inset 0 0 5px #00000026}.app{grid-template-rows:minmax(0,1fr);grid-template-columns:260px minmax(0,1fr);height:100vh;display:grid;overflow:hidden}.sidebar-wrapper{height:100%;overflow:hidden}.sidebar{background:var(--surface-elevated);border-right:1px solid var(--border);flex-direction:column;height:100%;display:flex;overflow:hidden}.sidebar-brand{border-bottom:1px solid var(--border);align-items:center;gap:.75rem;padding:1.25rem 1rem;display:flex;position:relative}.sidebar-view-toggle{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:.5rem;font-size:1rem;transition:color .2s;position:absolute;top:50%;right:.75rem;transform:translateY(-50%)}.sidebar-view-toggle:hover{color:var(--accent)}.brand-icon{color:var(--accent);font-size:1.5rem}.sidebar-brand h1{letter-spacing:-.02em;margin:0;font-size:1.1rem;font-weight:700}.sidebar-brand p{color:var(--text-muted);margin:.15rem 0 0;font-size:.75rem}.lesson-nav{flex:1;min-height:0;padding:.75rem 0;overflow-y:auto}.sidebar-section-tabs{border-top:1px solid var(--border);background:var(--surface-elevated);flex-wrap:wrap;justify-content:center;gap:.5rem;padding:.5rem;display:flex}.sidebar-tab{border:1px solid var(--border);min-width:2.5rem;color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;flex:0 auto;padding:.4rem .6rem;font-size:.8rem;font-weight:500;transition:all .2s}.sidebar-tab:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.sidebar-tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}.compact-track-row{gap:.4rem;padding:.5rem .75rem;display:flex}.compact-track-btn{border:1px solid var(--border);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;padding:.35rem .6rem;font-weight:600}.compact-track-btn.active{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}.compact-lesson-list{margin:0;padding:.5rem .5rem 1rem;list-style:none}.compact-lesson-list li{margin-bottom:.35rem}.compact-lesson-list button{width:100%;color:var(--text);cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:space-between;align-items:center;padding:.4rem .5rem;font-size:.82rem;display:flex}.compact-lesson-list button.active{background:var(--surface-hover);color:var(--accent)}.lesson-nav[data-view-mode=compact] .section-header,.lesson-nav[data-view-mode=compact] .track-section h3{display:none}.lesson-nav[data-view-mode=compact] .track-section ul{padding:0 .25rem}.lesson-nav[data-view-mode=compact] .track-section li button{padding:.4rem .5rem;font-size:.75rem}.lesson-nav[data-view-mode=compact] .lesson-meta{font-size:.65rem}.track-section ul{margin:0;padding:0 .5rem;list-style:none}.track-section li button{width:100%;color:var(--text);text-align:left;cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:space-between;align-items:center;gap:.5rem;padding:.55rem .65rem;font-size:.85rem;display:flex}.track-section li button:hover{background:var(--surface-hover)}.track-section li button.active{background:var(--accent-soft);color:var(--accent)}.lesson-meta{color:var(--text-muted);flex-shrink:0;font-size:.7rem}.cheatsheet-btn{width:100%;color:var(--text-muted);text-align:left;cursor:pointer;background:0 0;border:none;border-left:2px solid #0000;border-radius:8px;justify-content:space-between;align-items:center;gap:.5rem;margin-top:.15rem;padding:.55rem .65rem;font-size:.85rem;display:flex}.cheatsheet-btn:not(.locked):hover{background:var(--surface-hover);color:var(--text)}.cheatsheet-btn.active{background:var(--accent-soft);color:var(--accent);border-left-color:var(--accent)}.cheatsheet-btn.locked{cursor:not-allowed;opacity:.55}.workspace{background:var(--surface);flex-direction:column;min-width:0;min-height:0;display:flex;overflow:hidden}.workspace-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:.75rem 1.25rem;display:flex}.workspace-header p{color:var(--text-muted);margin:0;font-size:.9rem}.header-meta{flex-wrap:wrap;align-items:center;gap:.5rem;display:flex}.view-toggle-btn{border:1px solid var(--border);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;padding:.35rem .75rem;font-size:.8rem;font-weight:500;transition:all .2s}.view-toggle-btn:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.settings-btn{border:1px solid var(--border);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;padding:.35rem .6rem;font-size:1rem;transition:all .2s}.settings-btn:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.settings-overlay{z-index:999;background:#00000080;position:fixed;inset:0}.settings-modal{background:var(--surface-elevated);border:1px solid var(--border);z-index:1000;border-radius:12px;flex-direction:column;width:95%;max-width:650px;max-height:90vh;display:flex;position:fixed;top:50%;left:50%;overflow-y:auto;transform:translate(-50%,-50%);box-shadow:0 10px 40px #0003}.settings-header{border-bottom:1px solid var(--border);background:var(--surface-elevated);justify-content:space-between;align-items:center;padding:1.5rem;display:flex;position:sticky;top:0}.settings-header h2{margin:0;font-size:1.3rem;font-weight:600}.settings-close{color:var(--text-muted);cursor:pointer;background:0 0;border:none;width:2rem;height:2rem;padding:0;font-size:1.5rem}.settings-close:hover{color:var(--text)}.settings-content{flex:1;min-height:0;padding:1.5rem;overflow-y:auto}.settings-group{margin-bottom:1.75rem}.settings-group:last-child{margin-bottom:0}.settings-label{color:var(--text);margin-bottom:.75rem;font-size:.95rem;font-weight:600;display:block}.settings-section-title{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin:0 0 .75rem;font-size:.85rem;font-weight:600}.settings-options{flex-wrap:wrap;gap:.5rem;display:flex}.theme-option{border:1px solid var(--border);min-width:80px;color:var(--text-muted);cursor:pointer;background:0 0;border-radius:8px;flex:1;padding:.6rem 1rem;font-size:.85rem;font-weight:500;transition:all .2s}.theme-option:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.theme-option.active{background:var(--accent);color:#fff;border-color:var(--accent)}.font-size-slider{background:var(--surface-hover);appearance:none;border-radius:3px;outline:none;width:100%;height:6px;margin-bottom:1rem}.font-size-slider::-webkit-slider-thumb{appearance:none;background:var(--accent);cursor:pointer;border-radius:50%;width:16px;height:16px}.font-size-slider::-moz-range-thumb{background:var(--accent);cursor:pointer;border:none;border-radius:50%;width:16px;height:16px}.font-size-presets{gap:.5rem;display:flex}.preset-btn{border:1px solid var(--border);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;flex:1;padding:.5rem;font-size:.8rem;font-weight:500;transition:all .2s}.preset-btn:hover{border-color:var(--accent);color:var(--accent)}.preset-btn.active{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}.settings-action-btn{border:1px solid var(--border);width:100%;color:var(--text);cursor:pointer;background:0 0;border-radius:8px;padding:.75rem 1rem;font-size:.9rem;font-weight:500;transition:all .2s}.settings-action-btn:hover{color:#ff3b30;background:#ff3b301a;border-color:#ff3b30}.section-pill{background:var(--surface-hover);color:var(--text-muted);border-radius:999px;padding:.35rem .75rem;font-size:.75rem;font-weight:500}.progress-pill{background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:.35rem .75rem;font-size:.8rem;font-weight:500}.editor-preview-compact{flex-direction:column;flex:1;min-height:0;display:flex}.editor-preview-compact .code-editor,.editor-preview-compact .preview{flex:1}.compact-editor-tabs{border-bottom:1px solid var(--border);background:var(--surface-elevated);gap:0;display:flex}.compact-editor-tab{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;flex:1;padding:.5rem 1rem;font-size:.8rem;font-weight:500;transition:all .2s}.compact-editor-tab:hover{color:var(--text);background:var(--surface-hover)}.compact-editor-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.section-block{border-bottom:1px solid var(--border);margin-bottom:1rem;padding-bottom:.75rem}.section-block:last-of-type{border-bottom:none}.section-block.section-locked{opacity:.65}.section-header{padding:.5rem 1rem .75rem}.section-title{color:var(--accent);letter-spacing:.02em;margin:0;font-size:.85rem;font-weight:700}.section-subtitle{color:var(--text);margin:.15rem 0 0;font-size:.8rem;font-weight:600}.section-progress,.section-lock-msg{color:var(--text-muted);margin:.35rem 0 0;font-size:.7rem}.section-lock-msg{color:var(--warning)}.track-section h3{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin:0;padding:.5rem 1rem;font-size:.65rem;font-weight:600}.workspace-grid{flex:1;grid-template-columns:minmax(240px,320px) 1fr;min-height:0;display:grid}div.workspace-grid:not([data-panel-group]){gap:8px}.lesson-panel{border-right:1px solid var(--border);background:var(--surface-elevated);padding:1.25rem;overflow-y:auto}.lesson-breadcrumb{color:var(--text-muted);margin:0 0 .35rem;font-size:.75rem}.lesson-panel h2{letter-spacing:-.02em;margin:0 0 .5rem;font-size:1.25rem;font-weight:600}.project-badge{color:var(--accent);margin:0 0 .75rem;font-size:.8rem;font-weight:600}.workspace-note{color:var(--text-muted);margin:0 0 1rem;font-size:.8rem;line-height:1.4}.track-section li button.lesson-project{font-weight:500}.track-section li button.lesson-project.active{border-left:2px solid var(--accent)}.lesson-block{margin-bottom:1.25rem}.block-label{text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin:0 0 .5rem;font-size:.65rem;font-weight:700}.concept-block{background:#22d3a80f;border:1px solid #22d3a833;border-radius:10px;padding:1rem}.concept-block .block-label{color:var(--accent)}.concept-title{margin:0 0 .5rem;font-size:.95rem;font-weight:600}.concept-card p{color:var(--text);margin:0;font-size:.88rem;line-height:1.5}.concept-card code{color:var(--accent);background:var(--surface);border-radius:3px;padding:.1em .3em;font-size:.8em}.resize-handle{cursor:col-resize;background-color:#0000;transition:background-color .2s;position:relative;flex-basis:8px!important}.resize-handle:hover,.resize-handle[data-resize-handle-active]{background-color:#0000}.resize-handle:after{content:"";background-color:#0000;border-radius:4px;transition:background-color .2s;position:absolute;inset:0 3px}.resize-handle:hover:after,.resize-handle[data-resize-handle-active]:after{background-color:var(--accent)}[data-panel-group-direction=vertical]>.resize-handle{cursor:row-resize}[data-panel-group-direction=vertical]>.resize-handle:after{inset:3px 0}.concept-text{color:var(--text);margin:0;font-size:.88rem;line-height:1.55}.custom-editor-container .cm-editor{background-color:var(--editor-bg)!important;color:var(--editor-text)!important;font-family:var(--editor-font,"JetBrains Mono"), monospace!important}.custom-editor-container .cm-content{color:var(--editor-text);font-family:var(--editor-font,"JetBrains Mono"), monospace!important}.custom-editor-container .cm-scroller{font-size:var(--editor-font-size,14px);font-family:var(--editor-font,"JetBrains Mono"), monospace!important}.concept-inline-example{background:var(--editor-bg);color:var(--editor-text);border-radius:6px;margin:.65rem 0 0;padding:.5rem .75rem;font-family:JetBrains Mono,Consolas,monospace;font-size:.78rem;overflow-x:auto}.practice-block .instructions,.instructions{color:var(--text);white-space:pre-wrap;font-size:.9rem;line-height:1.6}.instructions code{background:var(--code-inline-bg);border-radius:4px;padding:.1em .35em;font-size:.85em}.hints{margin-top:1.25rem;font-size:.85rem}.hints summary{cursor:pointer;color:var(--accent);font-weight:500}.hints ul{margin:.5rem 0 0;padding-left:1.25rem}.hints code{font-size:.8rem}.btn-ghost{border:1px solid var(--border);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;margin-top:1.5rem;padding:.4rem .75rem;font-size:.8rem}.btn-ghost:hover{border-color:var(--text-muted);color:var(--text)}div.editor-preview:not([data-panel-group]){flex-direction:column;gap:8px;min-height:0;display:flex}.code-editor{border-bottom:1px solid var(--border);flex-direction:column;min-height:0;display:flex}.editor-tabs{border-bottom:1px solid var(--border);background:var(--surface-elevated);gap:0;display:flex}.editor-tabs button{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-1px;padding:.5rem 1rem;font-size:.8rem;font-weight:500}.editor-tabs button.active{color:var(--accent);border-bottom-color:var(--accent)}.editor-textarea{resize:none;background:var(--editor-bg);width:100%;min-height:0;color:var(--editor-text);tab-size:2;border:none;flex:1;padding:1rem;font-family:JetBrains Mono,Fira Code,Consolas,monospace;font-size:.85rem;line-height:1.5}.editor-textarea:focus{outline:none}.preview{background:#fff;flex-direction:column;height:100%;min-height:0;display:flex}.preview header{text-transform:uppercase;letter-spacing:.06em;color:#64748b;background:#f1f5f9;border-bottom:1px solid #e2e8f0;padding:.4rem .75rem;font-size:.7rem;font-weight:600}.preview-frame{background:#fff;border:none;flex:1;width:100%}.check-bar{border-top:1px solid var(--border);background:var(--surface-elevated);justify-content:space-between;align-items:flex-start;gap:1rem;padding:.75rem 1.25rem;display:flex}.check-feedback{flex:1;min-height:1.5rem}.check-feedback .success{color:var(--success);margin:0;font-size:.9rem;font-weight:500}.failures{color:var(--warning);margin:0;padding-left:1.25rem;font-size:.85rem}.check-actions{flex-shrink:0;gap:.5rem;display:flex}.btn-primary,.btn-secondary{cursor:pointer;border:none;border-radius:8px;padding:.55rem 1rem;font-size:.85rem;font-weight:600}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{filter:brightness(1.08)}.btn-secondary{background:var(--surface-hover);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}.app-main{flex-direction:column;min-width:0;min-height:0;display:flex;overflow:hidden}.cheatsheet-workspace{box-sizing:border-box;flex:1;min-width:0;min-height:0;padding:2.5rem 4rem 4rem;overflow-y:auto}@media (width<=1200px){.cheatsheet-toc{display:none}.cheatsheet-layout{gap:0}}.cheatsheet-layout{gap:4rem;max-width:1100px;margin:0 auto;display:flex}.cheatsheet{flex:1;max-width:720px}.cheatsheet-toc{flex-shrink:0;align-self:flex-start;width:240px;padding-top:1rem;position:sticky;top:0}.cheatsheet-toc h3{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:1rem;font-size:.85rem}.cheatsheet-toc ul{flex-direction:column;gap:.75rem;margin:0;padding:0;list-style:none;display:flex}.cheatsheet-toc a{color:var(--text);font-size:.9rem;text-decoration:none;transition:color .2s;display:block}.cheatsheet-toc a:hover{color:var(--accent)}.cheatsheet-header h2{letter-spacing:-.02em;margin:0 0 .5rem;font-size:1.5rem;font-weight:700}.cheatsheet-intro{color:var(--text-muted);margin:0 0 1.75rem;font-size:.95rem;line-height:1.6}.cheatsheet-section{margin-bottom:2rem}.cheatsheet-section h3{color:var(--accent);margin:0 0 .75rem;font-size:1rem;font-weight:600}.section-desc{color:var(--text-muted);margin:0 0 1rem;font-size:.88rem;line-height:1.5}.cheatsheet-cards{flex-direction:column;gap:.85rem;display:flex}.cheatsheet-card{background:var(--surface-elevated);border:1px solid var(--border);border-radius:10px;padding:1rem 1.1rem}.cheatsheet-card h4{margin:0 0 .5rem;font-size:.95rem;font-weight:600}.settings-tabs{border-bottom:1px solid var(--border);background:var(--surface);gap:0;padding:0 1.5rem;display:flex}.settings-tab{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-1px;padding:.75rem 1rem;font-size:.9rem;font-weight:500;transition:all .2s}.settings-tab:hover{color:var(--text)}.settings-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.layout-editor{flex-direction:column;gap:1.5rem;display:flex}.layout-section{border-top:1px solid var(--border);padding:1rem 0 0}.layout-section:first-child{border-top:none;padding-top:0}.layout-section h4{color:var(--text);margin:0 0 .75rem;font-size:.95rem;font-weight:600}.layout-presets{grid-template-columns:1fr 1fr;gap:.75rem;display:grid}.preset-layout-btn{text-align:left;border:1px solid var(--border);color:var(--text);cursor:pointer;background:0 0;border-radius:8px;flex-direction:column;justify-content:center;min-height:70px;padding:1rem;transition:all .2s;display:flex}.preset-layout-btn:hover{border-color:var(--accent);background:var(--accent-soft)}.preset-layout-btn.active,.preset-layout-btn.selected{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 1px var(--accent)}.preset-layout-btn.active .preset-name,.preset-layout-btn.selected .preset-name{color:var(--accent)}.preset-name{margin-bottom:.25rem;font-size:.9rem;font-weight:600}.preset-desc{color:var(--text-muted);font-size:.8rem}.layout-toggles{flex-direction:column;gap:.5rem;display:flex}.layout-toggle{cursor:pointer;border-radius:6px;align-items:center;gap:.5rem;padding:.5rem;transition:background .2s;display:flex}.layout-toggle:hover{background:var(--surface-hover)}.layout-toggle input[type=checkbox]{cursor:pointer;width:16px;height:16px}.layout-toggle span{color:var(--text);font-size:.9rem}.layout-split-options{flex-direction:column;gap:.5rem;display:flex}.layout-split{cursor:pointer;border-radius:6px;align-items:center;gap:.5rem;padding:.5rem;transition:background .2s;display:flex}.layout-split:hover{background:var(--surface-hover)}.layout-split input[type=radio]{cursor:pointer;width:16px;height:16px}.layout-split span{color:var(--text);font-size:.9rem}.layout-size-slider{margin-top:.75rem}.layout-size-slider label{flex-direction:column;gap:.5rem;display:flex}.layout-size-slider span{color:var(--text);font-size:.9rem;font-weight:500}.layout-size-slider input[type=range]{background:var(--surface-hover);appearance:none;border-radius:3px;outline:none;width:100%;height:6px}.layout-size-slider input[type=range]::-webkit-slider-thumb{appearance:none;background:var(--accent);cursor:pointer;border-radius:50%;width:16px;height:16px}.layout-size-slider input[type=range]::-moz-range-thumb{background:var(--accent);cursor:pointer;border:none;border-radius:50%;width:16px;height:16px}.size-info{color:var(--text-muted);margin:.25rem 0 0;font-size:.8rem}.layout-preview{border-top:1px solid var(--border);padding-top:1rem}.layout-preview h4{color:var(--text);margin:0 0 .75rem;font-size:.95rem;font-weight:600}.preview-layout{border:1px solid var(--border);background:var(--surface-hover);border-radius:8px;gap:.5rem;height:200px;display:flex;overflow:hidden}.preview-box{color:var(--text-muted);background:var(--surface-elevated);border:1px solid var(--border);border-radius:4px;justify-content:center;align-items:center;font-size:.85rem;font-weight:600;display:flex}.sidebar-box{width:20%;min-width:60px}.preview-col{flex-direction:column;flex:1;gap:.5rem;display:flex}.lesson-box{width:100%;height:30%}.preview-row{flex:1;gap:.5rem;display:flex}.editor-box,.preview-box-item{flex:1}.cheatsheet-card .definition{color:var(--text);margin:0 0 .65rem;font-size:.88rem;line-height:1.55}.syntax-label{color:var(--text-muted);margin:0 0 .5rem;font-size:.8rem}.syntax-label code{color:var(--accent)}.cheatsheet-card .example{background:var(--editor-bg);color:var(--editor-text);border-radius:8px;margin:0;padding:.75rem 1rem;font-family:JetBrains Mono,Consolas,monospace;font-size:.8rem;line-height:1.5;overflow-x:auto}.entry-tip{color:var(--text-muted);margin:.65rem 0 0;font-size:.82rem;line-height:1.45}.entry-tip strong{color:var(--accent)}.cheatsheet-aside .tip-list{color:var(--text);margin:0;padding-left:1.25rem;font-size:.88rem;line-height:1.6}.cheatsheet-aside .tip-list li+li{margin-top:.4rem}.practice-list li{color:var(--text-muted)}.concepts-nav{border-top:1px solid var(--border);margin-top:.5rem;padding-top:.75rem}.concepts-nav-btn{color:var(--text)!important}.concepts-view{max-width:720px}.concepts-header h2{margin:0 0 .5rem;font-size:1.5rem;font-weight:700}.concepts-intro{color:var(--text-muted);margin:0 0 .5rem;font-size:.95rem;line-height:1.6}.concepts-count{color:var(--accent);margin:0 0 1.5rem;font-size:.8rem;font-weight:500}.concepts-empty{background:var(--surface-elevated);border:1px dashed var(--border);color:var(--text-muted);border-radius:10px;padding:1.5rem;font-size:.9rem;line-height:1.5}.concepts-track{margin-bottom:2rem}.concepts-track h3{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin:0 0 .75rem;font-size:.75rem;font-weight:600}.concepts-list{flex-direction:column;gap:.75rem;display:flex}.concept-card{background:var(--surface-elevated);border:1px solid var(--border);border-radius:10px;padding:1rem 1.1rem}.concept-card h4{color:var(--accent);margin:0 0 .5rem;font-size:.95rem;font-weight:600}.concept-body{margin:0;font-size:.88rem;line-height:1.55}.concept-example{background:var(--editor-bg);color:var(--editor-text);border-radius:6px;margin:.65rem 0 0;padding:.6rem .85rem;font-family:JetBrains Mono,Consolas,monospace;font-size:.78rem;overflow-x:auto}@media (width<=900px){.sidebar-wrapper{z-index:9999;background:var(--surface-elevated);width:280px;transition:transform .3s cubic-bezier(.4,0,.2,1);position:fixed;top:0;bottom:0;left:0;transform:translate(-100%);box-shadow:4px 0 24px #00000080}.sidebar-wrapper.mobile-open{transform:translate(0)}.sidebar{border-right:none;height:100%}.workspace-grid{grid-template-rows:auto 1fr;grid-template-columns:1fr}.workspace-header{gap:.5rem;padding:.5rem 1rem}.workspace-header p{display:none}.header-meta{flex-wrap:wrap;justify-content:flex-end;gap:.5rem}.compact-editor-tabs{padding:.25rem .5rem}.compact-editor-tab{text-align:center;flex:1;padding:.75rem}.cheatsheet-workspace{padding:1.5rem}.cheatsheet-layout{gap:1.5rem}}.hamburger-btn{color:var(--text);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;margin-right:.5rem;padding:.5rem;font-size:1.5rem;transition:color .2s;display:flex}.hamburger-btn:hover{color:var(--accent)}.sidebar-overlay{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:9998;background:#00000080;animation:.2s ease-out fadeIn;position:fixed;inset:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-backdrop{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:9999;background:#0009;justify-content:center;align-items:center;width:100vw;height:100vh;display:flex;position:fixed;top:0;left:0}.paywall-modal{background:var(--surface);border:1px solid var(--border);text-align:center;border-radius:12px;width:90%;max-width:560px;padding:2.5rem;position:relative;box-shadow:0 20px 40px #00000080}.modal-header h2{margin:0 0 1rem;font-size:1.5rem}.icon-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;font-size:1.2rem;position:absolute;top:1rem;right:1rem}.icon-btn:hover{color:var(--text)}.paywall-message{color:var(--text-muted);margin-bottom:1.5rem;font-size:1rem;line-height:1.5}.paywall-message strong{color:var(--text)}.paywall-price{color:var(--accent);justify-content:center;align-items:center;gap:.25rem;margin-bottom:.5rem;font-size:3rem;font-weight:700;display:flex}.price-symbol{color:var(--text-muted);font-size:1.5rem}.price-currency{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:1rem}.paywall-subtext{color:var(--text-muted);font-size:.85rem}.premium-icon{color:#fbbf24;margin-left:.5rem;font-size:.9em}.preview-container{flex-direction:column;width:100%;height:100%;display:flex}.terminal-panel{background-color:var(--surface-elevated);border-top:1px solid var(--border);flex-direction:column;height:100%;display:flex}.sandbox-workspace .code-editor,.sandbox-workspace .preview-container,.workspace-grid .lesson-panel,.workspace-grid .code-editor,.workspace-grid .preview-container,.editor-preview .code-editor,.editor-preview .preview-container{background-color:var(--surface-elevated);border-radius:6px;overflow:hidden;border:1px solid var(--border)!important}.sandbox-workspace,.workspace-grid.workspace-padded{background-color:var(--surface);padding:8px}.terminal-header{background:var(--surface);border-bottom:1px solid var(--border);color:var(--text-muted);flex-shrink:0;justify-content:space-between;align-items:center;padding:.25rem .75rem;font-size:.8rem;font-weight:600;display:flex}.terminal-header .icon-btn{padding:.25rem;font-size:.9rem;position:static}.terminal-content{flex:1;min-height:0;padding:.5rem 0;font-family:Fira Code,Courier New,Courier,monospace;font-size:.85rem;line-height:1.4;overflow-y:auto}.terminal-empty{color:var(--text-muted);opacity:.5;padding:0 .75rem;font-style:italic}.terminal-log{word-break:break-all;border-bottom:1px solid #ffffff0d;padding:.15rem .75rem;display:flex}.terminal-icon{margin-right:.5rem;font-weight:700}.terminal-log.level-log{color:#e2e8f0}.terminal-log.level-log .terminal-icon{color:#64748b}.terminal-log.level-warn{color:#fef08a;background:#facc151a}.terminal-log.level-warn .terminal-icon{color:#eab308}.terminal-log.level-error{color:#fca5a5;background:#ef44441a}.terminal-log.level-error .terminal-icon{color:#ef4444}.flexlayout__tab_button{transition:all .2s;font-family:var(--tab-font,"Inter", system-ui, -apple-system, sans-serif)!important;font-size:var(--tab-font-size,14px)!important;border-radius:6px 6px 0 0!important}.flexlayout__tab_button:hover{background-color:var(--surface-hover)!important;color:var(--accent)!important}.flexlayout__tab_button--selected{background-color:var(--surface-elevated)!important;color:var(--accent)!important;border-bottom:2px solid var(--accent)!important}.flexlayout__tab_button_content{font-family:inherit!important;font-size:inherit!important}.settings-modal.preview-hover-active{box-shadow:none!important;background:0 0!important;border-color:#0000!important}:is(.settings-modal.preview-hover-active .settings-header,.settings-modal.preview-hover-active .settings-tabs,.settings-modal.preview-hover-active .settings-group:not(:has(.layout-preview)),.settings-modal.preview-hover-active .layout-section){opacity:.15}.settings-overlay.preview-hover-active{transition:opacity 50ms;opacity:0!important}.checkin-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:10000;background:#000000d9;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.checkin-container{background:var(--surface);border:1px solid var(--border);border-radius:12px;flex-direction:column;width:90%;max-width:1000px;height:80vh;animation:.3s slideInUp;display:flex;overflow:hidden;box-shadow:0 20px 40px #00000080}.checkin-header{background:var(--surface-hover);border-bottom:1px solid var(--border);justify-content:space-between;align-items:flex-start;padding:1.5rem 2rem;display:flex}.checkin-header h2{color:var(--text);margin:0;font-size:1.5rem}.streak-badge{color:#fff;background:linear-gradient(135deg,#ff9a44,#fc6076);border-radius:20px;padding:.25rem .75rem;font-size:.9rem;font-weight:700}.checkin-workspace{background:var(--surface-elevated);flex:1;min-height:0;display:flex}.checkin-footer{background:var(--surface-hover);border-top:1px solid var(--border);justify-content:flex-end;align-items:center;gap:1rem;padding:1rem 2rem;display:flex}.checkin-error{color:var(--error);border:1px solid var(--error);background:#ff44441a;border-radius:6px;padding:.5rem 1rem;font-size:.9rem}.checkin-success-modal{background:var(--surface);text-align:center;border:1px solid var(--border);border-radius:16px;padding:3rem;animation:.4s cubic-bezier(.175,.885,.32,1.275) zoomIn;box-shadow:0 10px 30px #00000080}.checkin-success-modal h1{background:linear-gradient(135deg,#ff9a44,#fc6076);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin:0 0 1rem;font-size:2.5rem}
