@import"https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css";:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde!important;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}:root{--toastify-color-light: #fff;--toastify-color-dark: #121212;--toastify-color-info: #3498db;--toastify-color-success: #07bc0c;--toastify-color-warning: #f1c40f;--toastify-color-error: hsl(6, 78%, 57%);--toastify-color-transparent: rgba(255, 255, 255, .7);--toastify-icon-color-info: var(--toastify-color-info);--toastify-icon-color-success: var(--toastify-color-success);--toastify-icon-color-warning: var(--toastify-color-warning);--toastify-icon-color-error: var(--toastify-color-error);--toastify-container-width: fit-content;--toastify-toast-width: 320px;--toastify-toast-offset: 16px;--toastify-toast-top: max(var(--toastify-toast-offset), env(safe-area-inset-top));--toastify-toast-right: max(var(--toastify-toast-offset), env(safe-area-inset-right));--toastify-toast-left: max(var(--toastify-toast-offset), env(safe-area-inset-left));--toastify-toast-bottom: max(var(--toastify-toast-offset), env(safe-area-inset-bottom));--toastify-toast-background: #fff;--toastify-toast-padding: 14px;--toastify-toast-min-height: 64px;--toastify-toast-max-height: 800px;--toastify-toast-bd-radius: 6px;--toastify-toast-shadow: 0px 4px 12px rgba(0, 0, 0, .1);--toastify-font-family: sans-serif;--toastify-z-index: 9999;--toastify-text-color-light: #757575;--toastify-text-color-dark: #fff;--toastify-text-color-info: #fff;--toastify-text-color-success: #fff;--toastify-text-color-warning: #fff;--toastify-text-color-error: #fff;--toastify-spinner-color: #616161;--toastify-spinner-color-empty-area: #e0e0e0;--toastify-color-progress-light: linear-gradient(to right, #4cd964, #5ac8fa, #007aff, #34aadc, #5856d6, #ff2d55);--toastify-color-progress-dark: #bb86fc;--toastify-color-progress-info: var(--toastify-color-info);--toastify-color-progress-success: var(--toastify-color-success);--toastify-color-progress-warning: var(--toastify-color-warning);--toastify-color-progress-error: var(--toastify-color-error);--toastify-color-progress-bgo: 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0;position:relative;touch-action:none;width:var(--toastify-toast-width);min-height:var(--toastify-toast-min-height);box-sizing:border-box;margin-bottom:1rem;padding:var(--toastify-toast-padding);border-radius:var(--toastify-toast-bd-radius);box-shadow:var(--toastify-toast-shadow);max-height:var(--toastify-toast-max-height);font-family:var(--toastify-font-family);z-index:0;display:flex;flex:1 auto;align-items:center;word-break:break-word}@media only screen and 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Toastify__slideOutUp{0%{transform:translate3d(0,var(--y),0)}to{visibility:hidden;transform:translate3d(0,-500px,0)}}.Toastify__slide-enter--top-left,.Toastify__slide-enter--bottom-left{animation-name:Toastify__slideInLeft}.Toastify__slide-enter--top-right,.Toastify__slide-enter--bottom-right{animation-name:Toastify__slideInRight}.Toastify__slide-enter--top-center{animation-name:Toastify__slideInDown}.Toastify__slide-enter--bottom-center{animation-name:Toastify__slideInUp}.Toastify__slide-exit--top-left,.Toastify__slide-exit--bottom-left{animation-name:Toastify__slideOutLeft;animation-timing-function:ease-in;animation-duration:.3s}.Toastify__slide-exit--top-right,.Toastify__slide-exit--bottom-right{animation-name:Toastify__slideOutRight;animation-timing-function:ease-in;animation-duration:.3s}.Toastify__slide-exit--top-center{animation-name:Toastify__slideOutUp;animation-timing-function:ease-in;animation-duration:.3s}.Toastify__slide-exit--bottom-center{animation-name:Toastify__slideOutDown;animation-timing-function:ease-in;animation-duration:.3s}@keyframes 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10px 25px #0000000d,0 1px 3px #0000000d;border:1px solid rgba(255,255,255,.5);animation:fadeIn .4s ease-out forwards}.instructions-title{color:#1e40af;font-size:2rem;margin-bottom:1.5rem;text-align:center;font-weight:700}.instructions-text{color:#4b5563;font-size:1.1rem;margin-bottom:1.5rem;line-height:1.6}.instructions-warning{background-color:#eff6ff;border-left:4px solid #3b82f6;padding:1rem;margin:1.5rem 0;border-radius:0 4px 4px 0;color:#1e40af}.instructions-warning .flex{display:flex;align-items:center;gap:.75rem;color:#1e40af}.instructions-warning .icon{color:#3b82f6;width:1.5rem;height:1.5rem;flex-shrink:0}.instructions-warning p{color:#1e40af;margin:0}.instructions-list{list-style:none;padding:0;margin:2rem 0}.instructions-list li{padding:.75rem 0 .75rem 2rem;position:relative;color:#4b5563;border-bottom:1px solid #f1f5f9}.instructions-list li:last-child{border-bottom:none}.instructions-list 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.section-title{font-size:.825rem;font-weight:600;color:#a1a1aa;margin:0;text-transform:uppercase;letter-spacing:.04em}.smart-test-data-container{display:flex;flex-direction:column;gap:8px}.view-mode-bar{display:flex;justify-content:flex-end}.view-mode-toggle{display:inline-flex;background:#18181b;border:1px solid #27272a;border-radius:6px;padding:2px;gap:2px}.view-mode-toggle .toggle-btn{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;font-size:.75rem;font-weight:500;color:#71717a;background:transparent;border:none;border-radius:4px;cursor:pointer;transition:all .15s ease}.view-mode-toggle .toggle-btn:hover{color:#d4d4d8}.view-mode-toggle .toggle-btn.active{color:#60a5fa;background:#27272a;font-weight:600;box-shadow:0 1px 3px #0003}.view-mode-toggle .toggle-btn:focus-visible{outline:2px solid #3b82f6}.raw-code-block{background:#0f0f11;border:1px solid #27272a;border-radius:6px;padding:12px;color:#e2e8f0;font-family:Fira Code,JetBrains Mono,Courier New,monospace;font-size:.875rem;line-height:1.5;white-space:pre-wrap;word-break:break-all;margin:0;overflow-x:auto}.grid-renderer-wrapper{background:#0f0f11;border:1px solid #27272a;border-radius:8px;padding:14px;overflow-x:auto;display:flex;justify-content:center;align-items:center}.grid-renderer-table{display:inline-flex;flex-direction:column;border:2px solid #3f3f46;border-radius:6px;background:#141417;overflow:hidden;box-shadow:0 2px 8px #0000004d}.grid-row{display:flex}.grid-cell{width:34px;height:34px;display:flex;align-items:center;justify-content:center;font-family:Fira Code,JetBrains Mono,Courier New,monospace;font-size:.95rem;font-weight:600;color:#f1f5f9;background:#18181b;border-right:1px solid #27272a;border-bottom:1px solid #27272a;box-sizing:border-box;-webkit-user-select:text;user-select:text;transition:background-color .15s ease}.grid-row:last-child .grid-cell{border-bottom:none}.grid-cell:last-child{border-right:none}.grid-cell:hover{background-color:#27272a;color:#60a5fa}.grid-cell.empty-cell{background-color:#121215}.grid-cell.sudoku-border-right{border-right:2px solid #60a5fa!important}.grid-cell.sudoku-border-bottom{border-bottom:2px solid #60a5fa!important}@media(max-width:640px){.sample-test-case-card .card-content{grid-template-columns:1fr;padding:12px;gap:14px}.grid-cell{width:28px;height:28px;font-size:.85rem}}:root{--bg-dark: #1e1e1e;--bg-panel: #252526;--bg-surface: #2d2d30;--bg-hover: #3e3e42;--text-main: #cccccc;--text-muted: #858585;--text-dim: #6b6b6b;--accent-primary: #007acc;--accent-hover: #0098ff;--accent-glow: rgba(0, 122, 204, .4);--border-color: #3c3c3c;--border-light: #454545;--success: #89d185;--success-bg: rgba(137, 209, 133, .15);--warning: #cca700;--warning-bg: rgba(204, 167, 0, .15);--danger: #f48771;--danger-bg: rgba(244, 135, 113, .15);--font-main: "Inter", system-ui, -apple-system, sans-serif;--font-mono: "Consolas", "Courier New", monospace;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 8px 12px rgba(0, 0, 0, .3);--shadow-glow: 0 0 15px var(--accent-glow)}.dsa-layout{display:flex;flex-direction:column;height:100vh;background-color:var(--bg-dark);color:var(--text-main);font-family:var(--font-main);overflow:hidden}h1,h2,h3,h4,h5{margin:0;font-weight:600;letter-spacing:-.02em}.dsa-loader{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;background:var(--bg-dark);color:var(--accent-primary);font-size:1.2rem;gap:15px}.spinner{width:40px;height:40px;border:3px solid rgba(59,130,246,.2);border-top-color:var(--accent-primary);border-radius:50%;animation:spin 1s linear infinite}.spinner-small{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.dsa-navbar{display:flex;justify-content:space-between;align-items:center;padding:0 24px;height:64px;background-color:var(--bg-panel);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm);z-index:10}.dsa-nav-left{display:flex;align-items:center;gap:16px}.brand{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700;color:#fff;background:linear-gradient(90deg,#60a5fa,#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.brand-icon{color:var(--accent-primary)}.back-btn{display:flex;align-items:center;gap:6px;background:transparent;border:none;color:var(--text-muted);font-size:1rem;font-weight:500;cursor:pointer;padding:6px 12px;border-radius:6px;transition:all .2s}.back-btn:hover{background:var(--bg-surface);color:var(--text-main)}.nav-divider{height:24px;width:1px;background:var(--border-color)}.nav-problem-title{color:var(--text-main);font-weight:600;font-size:1.05rem}.timer-pill{display:flex;align-items:center;gap:8px;background:var(--bg-surface);border:1px solid var(--border-light);padding:6px 14px;border-radius:20px;font-family:var(--font-mono);font-size:1rem;font-weight:600;color:var(--text-main);transition:all .3s ease}.timer-icon{color:var(--text-muted)}.timer-danger{background:var(--danger-bg);border-color:#ef44444d;color:var(--danger);animation:pulse-danger 1.5s infinite}.timer-danger .timer-icon{color:var(--danger)}@keyframes pulse-danger{0%{box-shadow:0 0 #ef444466}70%{box-shadow:0 0 0 10px #ef444400}to{box-shadow:0 0 #ef444400}}.dsa-main{flex:1;overflow:hidden;position:relative}.dsa-dashboard{max-width:1100px;margin:0 auto;padding:40px 24px;height:100%;overflow-y:auto}.dashboard-header{margin-bottom:30px}.dashboard-header h2{font-size:2rem;color:#fff;margin-bottom:8px}.dashboard-header p{color:var(--text-muted);font-size:1.05rem;margin:0}.problems-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}.problem-card{background:var(--bg-panel);border:1px solid var(--border-color);border-radius:12px;padding:24px;display:flex;flex-direction:column;justify-content:space-between;transition:transform .2s,box-shadow .2s,border-color .2s}.problem-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--border-light)}.problem-card-header{margin-bottom:24px}.problem-card-header h3{font-size:1.25rem;color:#fff;margin-bottom:12px;line-height:1.4}.problem-card-footer{display:flex;justify-content:flex-end}.diff-badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.diff-easy{background:var(--success-bg);color:var(--success);border:1px solid rgba(16,185,129,.2)}.diff-medium{background:var(--warning-bg);color:var(--warning);border:1px solid rgba(245,158,11,.2)}.diff-hard{background:var(--danger-bg);color:var(--danger);border:1px solid rgba(239,68,68,.2)}.btn-primary{background:var(--accent-primary);color:#fff;border:none;padding:8px 18px;border-radius:6px;font-weight:600;cursor:pointer;transition:all .2s;width:100%}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-primary:disabled{background:var(--bg-surface);color:var(--text-muted);cursor:not-allowed}.dsa-split{display:flex;height:100%;width:100%}.dsa-pane{height:100%;overflow:hidden;display:flex;flex-direction:column}.gutter{background-color:var(--bg-dark);background-repeat:no-repeat;background-position:50%;cursor:col-resize;position:relative}.gutter:after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);height:20px;width:2px;background:var(--border-light);border-radius:2px}.gutter:hover:after{background:var(--text-muted)}.problem-desc-pane{background-color:var(--bg-panel);border-right:1px solid var(--border-color);overflow-y:auto}.problem-content-wrapper{padding:30px}.problem-header-block{margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--border-color)}.problem-header-block h2{font-size:1.75rem;margin-bottom:16px;color:#fff}.problem-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.meta-item{display:flex;align-items:center;gap:6px;color:var(--text-muted);font-size:.9rem;background:var(--bg-surface);padding:4px 10px;border-radius:6px}.markdown-body{color:var(--text-main);font-size:1rem;line-height:1.7}.markdown-body p{margin-top:0;margin-bottom:16px}.markdown-body code{background:var(--bg-surface);padding:2px 6px;border-radius:4px;font-family:var(--font-mono);font-size:.9em;color:#e2e8f0}.markdown-body pre{background:var(--bg-dark);padding:16px;border-radius:8px;overflow-x:auto;border:1px solid var(--border-color);margin-bottom:20px}.markdown-body pre code{background:none;padding:0;font-size:.9em;color:var(--text-muted)}.editor-pane{background-color:var(--bg-dark);position:relative}.editor-toolbar{display:flex;justify-content:space-between;align-items:center;padding:8px 16px;background-color:var(--bg-panel);border-bottom:1px solid var(--border-color);height:50px}.toolbar-left,.toolbar-right{display:flex;align-items:center;gap:12px}.lang-select{background:var(--bg-surface);color:var(--text-main);border:1px solid var(--border-color);padding:6px 12px;border-radius:6px;font-size:.9rem;outline:none;cursor:pointer}.lang-select:focus{border-color:var(--accent-primary)}.btn-console{background:transparent;color:var(--text-muted);border:1px solid var(--border-light);padding:6px 14px;border-radius:6px;font-size:.9rem;cursor:pointer;transition:all .2s}.btn-console:hover{background:var(--bg-surface);color:var(--text-main)}.btn-submit{display:flex;align-items:center;gap:6px;background:var(--success);color:#fff;border:none;padding:6px 16px;border-radius:6px;font-weight:600;font-size:.9rem;cursor:pointer;transition:all .2s}.btn-submit:hover:not(:disabled){background:#059669;box-shadow:0 0 10px #10b98166}.btn-submit:disabled{background:var(--bg-surface);color:var(--text-dim);cursor:not-allowed}.editor-container{flex:1;position:relative}.console-panel{background:var(--bg-panel);border-top:1px solid var(--border-color);display:flex;flex-direction:column;z-index:20}.dsa-vertical-split{display:flex;flex-direction:column;flex:1;overflow:hidden}.dsa-vertical-split>.gutter{cursor:row-resize}.dsa-vertical-split>.gutter:after{height:2px;width:30px}.console-header{display:flex;justify-content:space-between;align-items:center;padding:8px 16px;background:var(--bg-surface);border-bottom:1px solid var(--border-color)}.console-header h3{font-size:.95rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.close-btn{background:none;border:none;color:var(--text-muted);font-size:1.5rem;line-height:1;cursor:pointer;padding:0 4px}.close-btn:hover{color:#fff}.btn-run-samples-inline:hover{background:#2563eb!important}.custom-input-container textarea:focus{border-color:#3b82f6!important;box-shadow:0 0 0 2px #3b82f633}.console-body{padding:16px;flex:1;overflow-y:auto}.console-empty{color:var(--text-dim);text-align:center;margin-top:40px}.console-loading{display:flex;align-items:center;gap:12px;color:var(--accent-hover);font-weight:500}.result-box{background:var(--bg-dark);border:1px solid var(--border-color);border-radius:8px;padding:20px}.result-title{display:flex;align-items:center;gap:10px;margin-bottom:16px}.result-title h4{font-size:1.25rem;margin:0}.status-icon{font-size:1.5rem}.status-icon.success{color:var(--success)}.status-icon.danger{color:var(--danger)}.status-icon.warning{color:var(--warning)}.result-accepted .result-title h4{color:var(--success)}.result-wrong-answer .result-title h4{color:var(--danger)}.result-compilation-error .result-title h4,.result-time-limit-exceeded .result-title h4{color:var(--warning)}.result-metrics{display:flex;gap:24px}.metric{display:flex;flex-direction:column;gap:4px}.metric .label{font-size:.8rem;color:var(--text-muted);text-transform:uppercase}.metric .value{font-size:1.1rem;font-weight:600;font-family:var(--font-mono);color:var(--text-main)}.error-container{margin-top:16px;background:transparent;border:1px solid var(--border-color);border-radius:8px;padding:16px}.error-title{font-size:.95rem;color:var(--danger);font-weight:600;margin-bottom:12px;text-transform:uppercase}.error-trace{margin:0;font-family:var(--font-mono);font-size:.85rem;color:#fca5a5;white-space:pre-wrap;word-break:break-all}.io-box{margin-top:14px;display:flex;flex-direction:column;gap:8px}.io-box strong{font-size:.85rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.io-box pre{background:#00000040;border:1px solid var(--border-light);padding:14px;border-radius:8px;font-family:var(--font-mono);font-size:.9rem;color:#e2e8f0;white-space:pre-wrap;word-break:break-word;margin:0;box-shadow:inset 0 2px 4px #0000001a}.io-box.error pre{color:#fca5a5;background:#ef44440d;border-color:#ef444433}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-dark)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-dim)}:root{--uu-gradient-start: #4F46E5;--uu-gradient-end: #7C3AED;--uu-bg: #F9FAFB;--uu-accent: #4F46E5;--uu-surface: #FFFFFF;--uu-text-on-dark: #1F2937;--uu-muted: #6B7280;--uu-border: #E5E7EB;--uu-radius: 12px;--uu-shadow: 0 4px 20px rgba(0, 0, 0, .08)}body.uucs-light{background:var(--uu-bg);color:var(--uu-text-on-dark);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;margin:0;line-height:1.6}.uucs-logo{display:inline-grid;place-items:center;width:140px;height:160px;border-radius:var(--uu-radius);background:linear-gradient(135deg,var(--uu-gradient-start),var(--uu-gradient-end));box-shadow:var(--uu-shadow);padding:18px;-webkit-mask-image:none}.uucs-logo-card{background:linear-gradient(145deg,#4f46e514,#7c3aed0a);border:1px solid var(--uu-border);padding:12px;border-radius:16px;display:inline-flex;align-items:center;justify-content:center}.uucs-header{display:flex;gap:16px;align-items:center;padding:24px;background:#fff;border-bottom:1px solid var(--uu-border);box-shadow:0 1px 3px #0000000d}.uucs-accent{color:var(--uu-accent);text-decoration:none;font-weight:500;transition:color .2s ease}.uucs-accent:hover{color:var(--uu-gradient-end);text-decoration:underline}.uucs-btn{--btn-padding: .7rem 1.1rem;display:inline-grid;place-items:center;gap:8px;padding:var(--btn-padding);border-radius:10px;background:linear-gradient(135deg,var(--uu-gradient-start),var(--uu-gradient-end));color:#fff;font-weight:600;border:none;cursor:pointer;box-shadow:0 4px 14px #4f46e533;transition:all .2s ease}.uucs-btn:active{transform:translateY(1px) scale(.99)}.uucs-btn:hover{box-shadow:0 6px 20px #4f46e54d;transform:translateY(-1px)}.uucs-btn-ghost{padding:var(--btn-padding);background:#fff;color:var(--uu-accent);border:1px solid var(--uu-border);border-radius:10px;transition:all .2s ease}.uucs-card{background:var(--uu-surface);border-radius:14px;padding:18px;box-shadow:0 8px 24px #03071299;border:1px solid var(--uu-border);color:var(--uu-text-on-dark)}.uucs-muted{color:var(--uu-muted);font-size:.95rem}.uucs-pill{display:inline-block;padding:6px 10px;border-radius:999px;background:linear-gradient(90deg,#38bdf814,#00c6ff0f);color:var(--uu-accent);font-weight:600;border:1px solid rgba(56,189,248,.08)}.uucs-glow{box-shadow:0 6px 22px #00c6ff1f,0 2px 6px #070c1e80}@media(prefers-reduced-motion:reduce){.uucs-btn,.uucs-logo{transition:none;transform:none}}