:root{--bg-root:#08090a;--bg-panel:#0f1011;--bg-surface:#191a1b;--bg-hover:#ffffff0a;--bg-active:#5e6ad226;--text-primary:#f7f8f8;--text-secondary:#d0d6e0;--text-muted:#8a8f98;--text-quaternary:#62666d;--accent:#5e6ad2;--accent-hover:#828fff;--border-subtle:#ffffff0d;--border-standard:#ffffff14;--activity-bar-width:48px;--sidebar-width:260px;--sidebar-tablet-width:200px;--bottom-nav-height:50px;--font-sans:"Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--radius-sm:4px;--radius-md:6px;--radius-lg:8px;--shadow-panel:0 0 0 1px #0003}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;overflow:hidden}body{font-family:var(--font-sans);background:var(--bg-root);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#fff3}.app-shell{width:100%;height:100%;display:flex}.app-main{flex:1;min-width:0;display:flex;overflow:hidden}@media (width<=767px){.app-shell{flex-direction:column}.app-main{padding-bottom:var(--bottom-nav-height);flex-direction:column}}.settings-page{flex-direction:column;flex:1;height:100%;display:flex;overflow-y:auto}.settings-header{border-bottom:1px solid var(--border-subtle);padding:24px 32px 16px}.settings-header h1{color:var(--text-primary);letter-spacing:-.3px;font-size:24px;font-weight:500}.settings-content{max-width:600px;padding:16px 32px}.settings-section{margin-bottom:32px}.settings-section h2{color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px;font-size:13px;font-weight:600}.settings-item{border-radius:var(--radius-md);border:1px solid var(--border-subtle);color:var(--text-secondary);justify-content:space-between;align-items:center;margin-bottom:4px;padding:10px 12px;font-size:14px;display:flex}.settings-value{color:var(--text-muted);font-size:13px}@media (width<=767px){.settings-page{padding-bottom:0}.settings-header{padding:16px 16px 12px}.settings-content{padding:12px 16px}}.app-layout{flex:1;min-width:0;display:flex}.app-layout.mobile{flex-direction:column}.main-area{flex:1;min-width:0;display:flex}.activity-bar{width:var(--activity-bar-width);background:var(--bg-panel);border-right:1px solid var(--border-subtle);z-index:10;flex-direction:column;flex-shrink:0;justify-content:space-between;align-items:center;height:100%;padding:8px 0;display:flex}.activity-bar-top{flex-direction:column;align-items:center;gap:2px;display:flex}.activity-bar-item{width:40px;height:40px;color:var(--text-muted);cursor:pointer;border-radius:var(--radius-md);-webkit-tap-highlight-color:transparent;background:0 0;border:none;justify-content:center;align-items:center;transition:color .15s,background .15s;display:flex;position:relative}.activity-bar-item:hover{color:var(--text-secondary);background:var(--bg-hover)}.activity-bar-item.active{color:var(--text-primary)}.activity-bar-item.active:before{content:"";background:var(--accent);border-radius:0 2px 2px 0;width:2px;position:absolute;top:8px;bottom:8px;left:0}.bottom-nav{height:var(--bottom-nav-height);background:var(--bg-panel);border-top:1px solid var(--border-subtle);z-index:100;padding:6px 0 env(safe-area-inset-bottom,0px);justify-content:space-around;align-items:center;display:flex;position:fixed;bottom:0;left:0;right:0}.bottom-nav-item{color:var(--text-muted);cursor:pointer;border-radius:var(--radius-md);-webkit-tap-highlight-color:transparent;background:0 0;border:none;flex-direction:column;justify-content:center;align-items:center;gap:2px;min-width:48px;min-height:40px;transition:color .15s;display:flex}.bottom-nav-item.active{color:var(--accent)}.bottom-nav-label{letter-spacing:.02em;font-size:10px;font-weight:500}.sidebar{width:var(--sidebar-width);background:var(--bg-panel);border-right:1px solid var(--border-subtle);flex-direction:column;flex-shrink:0;height:100%;display:flex;overflow:hidden}@media (width<=1023px){.sidebar{width:var(--sidebar-tablet-width)}}.sidebar.mobile{z-index:50;width:100%;height:100%;padding-bottom:var(--bottom-nav-height);position:fixed;top:0;left:0}.sidebar-header{border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;min-height:36px;padding:10px 12px;display:flex}.sidebar-title{letter-spacing:.06em;color:var(--text-quaternary);text-transform:uppercase;font-size:11px;font-weight:600}.sidebar-close{width:24px;height:24px;color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);-webkit-tap-highlight-color:transparent;background:0 0;border:none;justify-content:center;align-items:center;display:flex}.sidebar-close:hover{color:var(--text-primary);background:var(--bg-hover)}.sidebar-content{flex:1;overflow:hidden auto}.file-tree{-webkit-user-select:none;user-select:none;padding:4px 0}.tree-node{cursor:pointer;height:28px;color:var(--text-secondary);font-size:13px;font-family:var(--font-sans);white-space:nowrap;text-overflow:ellipsis;align-items:center;padding-right:8px;transition:background .1s;display:flex;overflow:hidden}.tree-node:hover{background:var(--bg-hover)}.tree-node:focus-visible{outline:1px solid var(--accent);outline-offset:-1px}.tree-node-icon{width:14px;color:var(--text-quaternary);flex-shrink:0;align-items:center;display:flex}.tree-node-type-icon{color:var(--text-muted);flex-shrink:0;align-items:center;margin-left:4px;display:flex}.tree-node-name{text-overflow:ellipsis;margin-left:6px;overflow:hidden}.editor{background:var(--bg-root);flex-direction:column;flex:1;min-width:0;display:flex}.editor-tabs{background:var(--bg-panel);border-bottom:1px solid var(--border-subtle);flex-shrink:0;display:flex;overflow-x:auto}.editor-tab{color:var(--text-muted);border-right:1px solid var(--border-subtle);white-space:nowrap;cursor:pointer;align-items:center;padding:8px 16px;font-size:12px;transition:background .1s;display:flex}.editor-tab:hover{background:var(--bg-hover)}.editor-tab.active{color:var(--text-primary);background:var(--bg-root);border-bottom:1px solid var(--bg-root)}.tab-name{font-family:var(--font-sans);font-weight:500}.editor-body{flex:1;display:flex;overflow:auto}.editor-gutter{background:var(--bg-root);border-right:1px solid var(--border-subtle);-webkit-user-select:none;user-select:none;flex-direction:column;flex-shrink:0;min-width:48px;padding:12px 0;display:flex}.gutter-line{font-family:var(--font-mono);color:var(--text-quaternary);text-align:right;min-width:48px;padding:0 12px 0 8px;font-size:13px;line-height:1.65}.editor-content{font-family:var(--font-mono);color:var(--text-secondary);white-space:pre;tab-size:2;flex:1;margin:0;padding:12px 16px;font-size:13px;line-height:1.65;overflow:auto}.code-line{min-height:1.65em}.code-line .keyword{color:var(--accent)}.code-line .string{color:#10b981}.code-line .comment{color:var(--text-quaternary);font-style:italic}