.nexalgo-shell{--nx-bg:#050505;--nx-panel:#0d0d0d;--nx-panel-2:#171717;--nx-line:#2b2b2b;--nx-line-soft:#1c1c1c;--nx-ink:#ffffff;--nx-ink-dim:#a8a8a8;--nx-ink-faint:#707070;--nx-signal:#ffffff;--nx-signal-dim:#565656;--nx-signal-ink:#050505;--nx-easy:#3fb37f;--nx-med:#d9a23a;--nx-hard:#e3625b;--nx-code-bg:#000000;--nx-input-bg:#000000;--nx-scrim:rgba(0,0,0,0.72);--nx-mono:"SFMono-Regular",ui-monospace,"JetBrains Mono","Cascadia Code",Consolas,monospace;--nx-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--nx-radius-sm:8px;--nx-radius-md:14px;--nx-radius-lg:20px;--nx-radius-pill:999px;--nexalgo-topbar-height:64px;--nexalgo-mobile-pane-gap:0.85rem;height:100vh;overflow:hidden;background:var(--nx-bg);color:var(--nx-ink);font-family:var(--nx-sans);font-size:15px;line-height:1.5}.nexalgo-shell[data-theme=light]{--nx-bg:#ffffff;--nx-panel:#f6f6f6;--nx-panel-2:#ececec;--nx-line:#e2e2e2;--nx-line-soft:#eeeeee;--nx-ink:#050505;--nx-ink-dim:#565656;--nx-ink-faint:#8a8a8a;--nx-signal:#050505;--nx-signal-dim:#b8b8b8;--nx-signal-ink:#ffffff;--nx-easy:#1f8f5f;--nx-med:#b47912;--nx-hard:#cc3b33;--nx-input-bg:#ffffff;--nx-scrim:rgba(0,0,0,0.4)}.nexalgo-shell *{box-sizing:border-box}.nexalgo-shell ::-moz-selection{background:var(--nx-signal);color:var(--nx-signal-ink)}.nexalgo-shell ::selection{background:var(--nx-signal);color:var(--nx-signal-ink)}.nexalgo-topbar{position:sticky;top:0;z-index:40;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:1rem;padding:.85rem 1.25rem;background:var(--nx-panel);border-bottom:1px solid var(--nx-line)}.nexalgo-topbar-left,.nexalgo-topbar-right{display:flex;align-items:center;gap:.85rem}.nexalgo-topbar-left{justify-content:flex-start}.nexalgo-topbar-right{justify-content:flex-end}.back-to-nexacore{display:inline-flex;align-items:center;gap:.4rem;color:var(--nx-ink-dim);text-decoration:none;padding:.45rem .8rem;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);font-size:.82rem;font-weight:500;transition:.15s}.back-to-nexacore:hover{border-color:var(--nx-signal-dim);color:var(--nx-ink)}.back-to-nexacore svg{transition:transform .2s ease}.back-to-nexacore:hover svg{transform:translateX(-3px)}@media (max-width:768px){.back-to-nexacore{padding:.5rem;gap:0}.back-to-nexacore .back-label{display:none}}.nexalgo-back-link{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem .9rem;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);color:var(--nx-ink-dim);text-decoration:none;transition:.15s}.nexalgo-back-link:hover{border-color:var(--nx-signal-dim);color:var(--nx-ink)}.nexalgo-back-link-text{white-space:nowrap}.nexalgo-brand{text-align:center}.nexalgo-brand h1{margin:0;font-family:var(--nx-mono);font-size:1.05rem;letter-spacing:.18em;text-transform:uppercase;color:var(--nx-ink)}.nexalgo-brand h1:before{content:"";display:inline-block;width:7px;height:7px;background:var(--nx-signal);margin-right:8px;vertical-align:middle}.nexalgo-brand p{margin:2px 0 0;font-size:.72rem;color:var(--nx-ink-faint);letter-spacing:.05em}.nexalgo-hamburger{width:40px;height:32px;border:1px solid var(--nx-line);border-radius:var(--nx-radius-sm);background:transparent;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;transition:border-color .15s,background .15s}.nexalgo-hamburger:hover{border-color:var(--nx-signal-dim);background:rgba(255,255,255,.08)}.nexalgo-hamburger span{display:block;width:18px;height:2px;border-radius:999px;background:var(--nx-ink-dim)}.nexalgo-main,.nexalgo-sidebar{display:flex;height:calc(100vh - var(--nexalgo-topbar-height))}.nexalgo-sidebar{width:280px;flex:0 0 280px;border-right:1px solid var(--nx-line);background:var(--nx-panel);flex-direction:column;overflow:hidden}.nexalgo-sidebar.collapsed{width:36px;flex:0 0 36px;align-items:center}.nexalgo-pane-collapse-btn{flex:0 0 auto;width:100%;height:100%;background:transparent;border:none;color:var(--nx-ink-faint);font-family:var(--nx-mono);font-size:13px;cursor:pointer;transition:.12s}.nexalgo-pane-collapse-btn:hover{background:var(--nx-panel-2);color:var(--nx-ink)}.nexalgo-pane-collapse-inline{flex:0 0 auto;background:transparent;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);color:var(--nx-ink-faint);font-family:var(--nx-mono);font-size:12px;width:26px;height:26px;cursor:pointer;transition:.12s}.nexalgo-pane-collapse-inline:hover{border-color:var(--nx-signal-dim);color:var(--nx-ink)}.nexalgo-sidebar-header{flex:0 0 auto;justify-content:space-between;padding:16px 18px 10px;border-bottom:1px solid var(--nx-line)}.nexalgo-sidebar-header,.nexalgo-sidebar-header-actions{display:flex;align-items:center;gap:10px}.nexalgo-nav{flex:0 0 auto;display:flex;flex-direction:column;padding:10px;gap:2px;border-bottom:1px solid var(--nx-line)}.nexalgo-nav button{display:flex;align-items:center;gap:10px;background:transparent;border:none;border-radius:var(--nx-radius-sm);color:var(--nx-ink-dim);font-family:var(--nx-sans);font-size:.85rem;padding:8px 9px;text-align:left;cursor:pointer;transition:.12s}.nexalgo-nav button.active,.nexalgo-nav button:hover{background:var(--nx-panel-2);color:var(--nx-ink)}.nexalgo-nav button.active{border-left:2px solid var(--nx-signal)}.nexalgo-nav-icon{letter-spacing:.05em;text-transform:uppercase;color:var(--nx-ink-faint);border:1px solid var(--nx-line);border-radius:var(--nx-radius-sm);padding:2px 4px}.nexalgo-nav-count,.nexalgo-nav-icon{font-family:var(--nx-mono);font-size:9px;flex:0 0 auto}.nexalgo-nav-count{margin-left:auto;color:var(--nx-signal-ink);background:var(--nx-signal);border-radius:var(--nx-radius-pill);padding:1px 6px}.nexalgo-sidebar-filters-fixed{flex:0 0 auto;padding:12px 14px 8px;display:flex;flex-direction:column;gap:6px;border-bottom:1px solid var(--nx-line)}.nexalgo-sidebar-scroll{flex:1;overflow-y:auto}.nexalgo-sidebar-filters{padding:8px 14px 12px;display:flex;flex-direction:column;gap:6px;border-bottom:1px solid var(--nx-line)}.nexalgo-filter-label-row{display:flex;align-items:center;justify-content:space-between;gap:8px}.nexalgo-filter-label{letter-spacing:.14em;color:var(--nx-ink-faint);margin:0 0 4px}.nexalgo-filter-label,.nexalgo-reset-filters-btn{font-family:var(--nx-mono);font-size:10px;text-transform:uppercase}.nexalgo-reset-filters-btn{background:transparent;border:none;color:var(--nx-signal);letter-spacing:.06em;text-decoration:underline;text-underline-offset:2px;padding:0 0 4px;cursor:pointer}.nexalgo-reset-filters-btn:hover{color:var(--nx-ink)}.nexalgo-sidebar-filter-checkbox{display:flex;align-items:center;gap:8px;color:var(--nx-ink-dim);font-family:var(--nx-mono);font-size:11px;padding:5px 2px;cursor:pointer;transition:.12s}.nexalgo-sidebar-filter-checkbox:hover{color:var(--nx-ink)}.nexalgo-sidebar-filter-checkbox input[type=checkbox]{width:14px;height:14px;flex:0 0 auto;accent-color:var(--nx-signal);border-radius:4px;cursor:pointer}.nexalgo-review-queue-panel{padding:14px;border-top:1px solid var(--nx-line);max-height:42vh;overflow-y:auto}.nexalgo-list-pane{width:380px;flex:0 0 380px;border-right:1px solid var(--nx-line);display:flex;flex-direction:column;background:var(--nx-bg);height:calc(100vh - var(--nexalgo-topbar-height));overflow:hidden;padding:0}.nexalgo-list-pane.collapsed{width:36px;flex:0 0 36px;align-items:center}.nexalgo-pane-head{flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 18px;border-bottom:1px solid var(--nx-line)}.nexalgo-sort-label{font-size:10.5px;letter-spacing:.04em;color:var(--nx-ink-faint)}.nexalgo-pane-head h2,.nexalgo-sort-label{font-family:var(--nx-mono);text-transform:uppercase}.nexalgo-pane-head h2{margin:0;font-size:12px;letter-spacing:.16em;color:var(--nx-ink)}.nexalgo-pane-controls{display:flex;flex-direction:row;flex-wrap:wrap;align-items:flex-end;justify-content:flex-end;gap:6px 8px}.nexalgo-pane-controls .nexalgo-pane-collapse-inline{align-self:flex-end;order:1}.nexalgo-pane-controls .nexalgo-sort-label{order:3;flex-basis:100%;text-align:right}.nexalgo-pane-controls .nexalgo-pane-toggle{order:2}.nexalgo-pane-toggle{background:transparent;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);color:var(--nx-ink-dim);font-family:var(--nx-mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;padding:6px 10px;cursor:pointer;transition:.15s}.nexalgo-pane-toggle:hover{border-color:var(--nx-signal-dim);color:var(--nx-ink)}.nexalgo-problem-list{flex:1;overflow-y:auto;padding:0}.nexalgo-detail-pane::-webkit-scrollbar,.nexalgo-problem-list::-webkit-scrollbar,.nexalgo-sidebar::-webkit-scrollbar{width:9px}.nexalgo-detail-pane::-webkit-scrollbar-thumb,.nexalgo-problem-list::-webkit-scrollbar-thumb,.nexalgo-sidebar::-webkit-scrollbar-thumb{background:var(--nx-line)}.nexalgo-problem-card{display:block;width:100%;text-align:left;background:transparent;border:none;border-left:2px solid transparent;border-bottom:1px solid var(--nx-line-soft);border-radius:var(--nx-radius-sm);padding:8px 18px;cursor:pointer;transition:.12s}.nexalgo-problem-card:hover{background:var(--nx-panel-2)}.nexalgo-problem-card.active{background:var(--nx-panel-2);border-left-color:var(--nx-signal)}.nexalgo-problem-card h3{margin:0;font-size:13px;font-weight:500;color:var(--nx-ink);line-height:1.3}.nexalgo-meta-line,.nexalgo-problem-card h3{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nexalgo-meta-line{font-family:var(--nx-mono);font-size:10.5px;color:var(--nx-ink-faint);margin:3px 0 0}.nexalgo-difficulty-easy{color:var(--nx-easy)}.nexalgo-difficulty-medium{color:var(--nx-med)}.nexalgo-difficulty-hard{color:var(--nx-hard)}.nexalgo-status-unvisited{color:var(--nx-ink-faint)}.nexalgo-status-visited{color:#6f9bd6}.nexalgo-status-attempted{color:var(--nx-med)}.nexalgo-status-solved{color:var(--nx-easy)}.nexalgo-detail-pane{flex:1;min-width:0;overflow-y:auto;height:calc(100vh - var(--nexalgo-topbar-height));padding:0}.nexalgo-detail-body{max-width:760px;margin:0 auto;padding:30px 36px 90px}.nexalgo-detail-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-bottom:16px;border-bottom:1px solid var(--nx-line)}.nexalgo-detail-title-row h2{margin:0;font-size:26px;font-weight:700;letter-spacing:-.01em;line-height:1.15;color:var(--nx-ink)}.nexalgo-detail-subcopy{color:var(--nx-ink-dim);font-size:13px;margin:6px 0 0}.nexalgo-detail-difficulty{display:inline-flex;align-items:center;width:-moz-fit-content;width:fit-content;margin:9px 0 0;border:1px solid;border-radius:var(--nx-radius-pill);background:color-mix(in srgb,currentColor 13%,transparent);padding:4px 10px;font-family:var(--nx-mono);font-size:11px;font-weight:700;line-height:1;letter-spacing:.1em;text-transform:uppercase}.nexalgo-detail-actions,.nexalgo-status-actions{display:flex;flex-wrap:wrap;gap:8px}.nexalgo-detail-sections{display:flex;flex-direction:column}.nexalgo-section{margin:34px 0 0;padding:0}.nexalgo-shell section.nexalgo-detail-pane,.nexalgo-shell section.nexalgo-list-pane,.nexalgo-shell section.nexalgo-section{padding-block:0!important}.nexalgo-section h3{font-family:var(--nx-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--nx-ink);font-weight:600;margin:0 0 14px;padding-bottom:6px;border-bottom:1px solid var(--nx-line)}.nexalgo-section p{color:var(--nx-ink-dim);font-size:15.5px;line-height:1.75;margin:0;white-space:pre-line}.nexalgo-section ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}.nexalgo-section ul li{position:relative;padding-left:22px;color:var(--nx-ink-dim);font-size:14.5px;line-height:1.65}.nexalgo-section ul li:before{content:"";position:absolute;left:2px;top:7px;width:6px;height:6px;border:1px solid var(--nx-signal)}.nexalgo-company-row,.nexalgo-topic-row{display:flex;flex-wrap:wrap;gap:6px}.nexalgo-chip{font-family:var(--nx-mono);font-size:10px;color:var(--nx-ink-dim);padding:3px 8px;letter-spacing:.03em}.nexalgo-approach-toggle,.nexalgo-chip{border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill)}.nexalgo-approach-toggle{display:inline-flex;gap:4px;padding:4px;margin-bottom:14px;background:var(--nx-panel-2)}.nexalgo-approach-btn{background:transparent;border:none;border-radius:var(--nx-radius-pill);color:var(--nx-ink-dim);font-family:var(--nx-mono);font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;padding:7px 16px;cursor:pointer;transition:.15s}.nexalgo-approach-btn:hover{color:var(--nx-ink)}.nexalgo-approach-btn.active{background:var(--nx-signal);color:var(--nx-signal-ink)}.nexalgo-code-tabs{display:flex;gap:6px;margin-bottom:10px}.nexalgo-code-tabs button{background:transparent;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);color:var(--nx-ink-dim);font-family:var(--nx-mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;padding:5px 11px;cursor:pointer;transition:.15s}.nexalgo-code-tabs button:hover{border-color:var(--nx-ink-faint);color:var(--nx-ink)}.nexalgo-code-tabs button.active{background:var(--nx-signal);border-color:var(--nx-signal);color:var(--nx-signal-ink)}.nexalgo-code-block{background:var(--nx-code-bg);border:1px solid var(--nx-line);border-radius:var(--nx-radius-md);overflow:hidden}.nexalgo-code-header{display:flex;align-items:center;justify-content:space-between;padding:8px 13px;border-bottom:1px solid var(--nx-line);background:#0c0e10;font-family:var(--nx-mono);font-size:11px;color:var(--nx-ink-faint);letter-spacing:.05em}.nexalgo-code-copy-btn{background:transparent;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);color:var(--nx-ink-dim);font-family:var(--nx-mono);font-size:10px;padding:4px 10px;letter-spacing:.08em;text-transform:uppercase;cursor:pointer;transition:.15s}.nexalgo-code-copy-btn:hover{border-color:var(--nx-signal-dim);color:var(--nx-ink)}.nexalgo-code-copy-btn.copied{color:var(--nx-easy);border-color:var(--nx-easy)}.nexalgo-code-body{overflow-x:auto}.nexalgo-code-content{margin:0;padding:16px 18px;font-family:var(--nx-mono);font-size:12.6px;line-height:1.62;color:#d4d4d4;white-space:pre;-moz-tab-size:4;-o-tab-size:4;tab-size:4}.nexalgo-token-keyword{color:#569cd6}.nexalgo-token-type{color:#4ec9b0}.nexalgo-token-identifier{color:#9cdcfe}.nexalgo-token-string{color:#ce9178}.nexalgo-token-number{color:#b5cea8}.nexalgo-token-comment{color:#6a9955;font-style:italic}.nexalgo-token-punctuation{color:#d4d4d4}.nexalgo-approach-block{margin-bottom:22px}.nexalgo-approach-label{font-family:var(--nx-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--nx-signal);margin:0 0 10px;display:flex;align-items:center;gap:8px}.nexalgo-approach-label:after{content:"";flex:1;height:1px;background:var(--nx-line)}.nexalgo-approach-textbox{padding:16px 18px;border:1px solid var(--nx-line);border-left:2px solid var(--nx-signal);border-radius:var(--nx-radius-md);background:var(--nx-panel)}.nexalgo-approach-intro{margin:0 0 18px}.nexalgo-complexity-box{display:flex;flex-direction:column;gap:12px}.nexalgo-complexity-box b{color:var(--nx-ink)}.nexalgo-complexity-box .nexalgo-complexity-row{margin:0;font-family:var(--nx-mono);font-size:12.5px;line-height:1.7;color:var(--nx-ink-dim);white-space:normal}.nexalgo-complexity-row-label{display:inline-block;min-width:52px;margin-right:8px;color:var(--nx-signal);font-weight:600}.nexalgo-talk-block{background:var(--nx-panel);border:1px solid var(--nx-line);border-left:2px solid var(--nx-signal);border-radius:var(--nx-radius-md);padding:16px 18px;font-size:14px;line-height:1.62;color:var(--nx-ink-dim);font-style:italic}.nexalgo-danger-btn,.nexalgo-inline-btn,.nexalgo-link-btn,.nexalgo-save-btn,.nexalgo-secondary-btn{font-family:var(--nx-mono);font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;padding:8px 14px;cursor:pointer;transition:.15s;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);background:transparent;color:var(--nx-ink-dim)}.nexalgo-inline-btn:hover,.nexalgo-link-btn:hover,.nexalgo-secondary-btn:hover{border-color:var(--nx-signal-dim);color:var(--nx-ink)}.nexalgo-link-btn{border:none;border-radius:0;text-decoration:underline;text-underline-offset:3px;padding:8px 4px}.nexalgo-danger-btn{border-color:var(--nx-signal-dim);color:var(--nx-hard)}.nexalgo-danger-btn:hover{background:var(--nx-hard);border-color:var(--nx-hard);color:var(--nx-signal-ink)}.nexalgo-save-btn{background:var(--nx-signal);border-color:var(--nx-signal);color:var(--nx-signal-ink)}.nexalgo-save-btn:hover{background:var(--nx-ink-dim);border-color:var(--nx-ink-dim)}.nexalgo-markdone{margin-top:0;background:transparent;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);color:var(--nx-ink-dim);padding:8px 14px;font-family:var(--nx-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;transition:.15s;display:inline-flex;gap:8px;align-items:center;cursor:pointer}.nexalgo-markdone:hover{border-color:var(--nx-signal-dim);color:var(--nx-ink)}.nexalgo-markdone.is-done{background:var(--nx-signal);border-color:var(--nx-signal);color:var(--nx-signal-ink)}.nexalgo-status-pill{display:inline-flex;align-items:center;font-family:var(--nx-mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;padding:4px 9px;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);color:var(--nx-ink-dim)}.nexalgo-status-pill.visited{color:#6f9bd6;border-color:#6f9bd6}.nexalgo-status-pill.attempted{color:var(--nx-med);border-color:var(--nx-med)}.nexalgo-status-pill.solved{color:var(--nx-easy);border-color:var(--nx-easy)}.nexalgo-empty-state{padding:30px 18px;color:var(--nx-ink-faint);font-family:var(--nx-mono);font-size:12.5px;text-align:center}.nexalgo-error{color:var(--nx-hard);font-size:13px}.nexalgo-message{color:var(--nx-easy);font-size:13px}.nexalgo-auth-wrap{display:flex;align-items:center;justify-content:center;padding:60px 20px;min-height:calc(100vh - var(--nexalgo-topbar-height));height:calc(100vh - var(--nexalgo-topbar-height));overflow-y:auto}.nexalgo-auth-card{background:var(--nx-panel);border:1px solid var(--nx-line);border-radius:var(--nx-radius-lg);padding:30px;max-width:760px;width:100%}.nexalgo-auth-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:30px}.nexalgo-auth-copy h2,.nexalgo-auth-form h2{font-size:22px;font-weight:700;color:var(--nx-ink);margin:0 0 12px}.nexalgo-auth-form{display:flex;flex-direction:column;gap:10px}.nexalgo-auth-form input{background:var(--nx-input-bg);border:1px solid var(--nx-line);border-radius:var(--nx-radius-sm);color:var(--nx-ink);padding:10px 12px;font-family:var(--nx-sans);font-size:13.5px;outline:none}.nexalgo-auth-form input:focus{border-color:var(--nx-signal-dim)}.nexalgo-auth-form button[type=submit]{background:var(--nx-signal);border:1px solid var(--nx-signal);border-radius:var(--nx-radius-pill);color:var(--nx-signal-ink);padding:10px;font-family:var(--nx-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;cursor:pointer;transition:.15s}.nexalgo-auth-form button[type=submit]:hover{background:var(--nx-ink-dim);border-color:var(--nx-ink-dim)}.nexalgo-auth-switch{background:transparent;border:none;color:var(--nx-ink-dim);font-size:12px;text-align:left;text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:4px 0}@media (max-width:720px){.nexalgo-auth-grid{grid-template-columns:1fr}}.nexalgo-menu-scrim,.nexalgo-modal-scrim{position:fixed;inset:0;z-index:60;background:var(--nx-scrim);border:none}.nexalgo-menu-panel{position:fixed;top:0;right:0;z-index:61;width:360px;max-width:100%;height:100vh;overflow-y:auto;background:var(--nx-panel);border-left:1px solid var(--nx-line);padding:20px}.nexalgo-menu-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--nx-line)}.nexalgo-menu-title{font-family:var(--nx-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--nx-ink-faint);margin:0 0 4px}.nexalgo-menu-head h3{margin:0;font-size:16px;color:var(--nx-ink)}.nexalgo-close-btn{width:32px;height:32px;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);background:transparent;color:var(--nx-ink-dim);cursor:pointer;font-family:var(--nx-mono)}.nexalgo-close-btn:hover{border-color:var(--nx-signal-dim);color:var(--nx-ink)}.nexalgo-menu-section{margin-top:18px}.nexalgo-menu-section h3{font-family:var(--nx-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--nx-ink);margin:0 0 10px}.nexalgo-role-list{display:flex;flex-wrap:wrap;gap:6px}.nexalgo-theme-options{display:inline-flex;gap:4px;padding:4px;border:1px solid var(--nx-line);border-radius:var(--nx-radius-pill);background:var(--nx-panel-2)}.nexalgo-theme-btn{flex:1 1 auto;background:transparent;border:none;border-radius:var(--nx-radius-pill);color:var(--nx-ink-dim);font-family:var(--nx-mono);font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;padding:7px 14px;cursor:pointer;transition:.15s}.nexalgo-theme-btn:hover{color:var(--nx-ink)}.nexalgo-theme-btn.active{background:var(--nx-signal);color:var(--nx-signal-ink)}.nexalgo-modal-card{background:var(--nx-panel);border:1px solid var(--nx-line);border-radius:var(--nx-radius-lg);padding:24px;max-width:520px;width:100%}.nexalgo-modal-scrim{display:flex;align-items:center;justify-content:center;padding:20px;overflow-y:auto}.nexalgo-question-modal{max-width:920px;max-height:90vh;overflow-y:auto}.nexalgo-question-form{display:flex;flex-direction:column;gap:14px;margin-top:16px}.nexalgo-question-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.nexalgo-field{display:flex;flex-direction:column;gap:5px}.nexalgo-field-label{font-family:var(--nx-mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--nx-ink-faint)}.nexalgo-field input,.nexalgo-field textarea{background:var(--nx-input-bg);border:1px solid var(--nx-line);border-radius:var(--nx-radius-sm);color:var(--nx-ink);padding:8px 10px;font-family:var(--nx-sans);font-size:13px;outline:none}.nexalgo-field textarea{min-height:90px;resize:vertical}.nexalgo-field input:focus,.nexalgo-field textarea:focus{border-color:var(--nx-signal-dim)}.nexalgo-question-actions{display:flex;justify-content:flex-end;gap:10px}@media (max-width:720px){.nexalgo-question-grid{grid-template-columns:1fr}}.nexalgo-queue-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.nexalgo-queue-list{display:flex;flex-direction:column;gap:10px;margin-top:10px}.nexalgo-queue-card{border:1px solid var(--nx-line);border-radius:var(--nx-radius-md);background:var(--nx-code-bg);padding:12px}.nexalgo-queue-card strong{color:var(--nx-ink);font-size:13px}.nexalgo-queue-actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}@media (max-width:1120px){.nexalgo-shell{height:auto;min-height:100vh;overflow:visible}.nexalgo-main{flex-direction:column;height:auto}.nexalgo-detail-pane,.nexalgo-list-pane,.nexalgo-sidebar{width:100%;flex:none;height:auto;position:relative;top:0}.nexalgo-list-pane.collapsed,.nexalgo-sidebar.collapsed{width:100%}.nexalgo-list-pane,.nexalgo-sidebar{border-right:none;border-bottom:1px solid var(--nx-line)}.nexalgo-list-pane{max-height:360px}.nexalgo-problem-list{max-height:300px}.nexalgo-detail-body{padding:24px 18px 70px}.nexalgo-detail-title-row h2{font-size:21px}}@media (max-width:520px){.nexalgo-auth-card{padding:20px}}