:root,[data-theme=dark]{--bg-primary:#0b1120;--bg-secondary:#111a2e;--bg-panel:#131d33;--bg-surface:#1a2744;--bg-hover:#1f2f52;--bg-active:#253760;--accent:#4aaed9;--accent-hover:#3a9ac4;--accent-subtle:#4aaed91f;--accent-glow:0 0 16px #4aaed933;--text-primary:#e2e8f4;--text-secondary:#8a9abf;--text-muted:#506080;--text-accent:#7cc5e4;--border-subtle:#ffffff0f;--border-default:#ffffff1a;--border-active:#4aaed959;--node-fill:#1a2744;--node-stroke:#4aaed9;--node-text:#e2e8f4;--node-highlight:#6dd0f5;--edge-color:#35506e;--logo-bg:#4aaed9;--header-height:56px;--panel-width:360px;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-normal:.25s cubic-bezier(.4, 0, .2, 1);--transition-spring:.4s cubic-bezier(.34, 1.56, .64, 1);--dot-color:#ffffff0a;--toast-bg:#7f1d1de6;--toast-text:#fca5a5;--toast-border:#fca5a533;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}[data-theme=light]{--bg-primary:#fef7ed;--bg-secondary:#fff3e0;--bg-panel:#fff8f0;--bg-surface:#fff;--bg-hover:#fff0de;--bg-active:#ffe8cc;--accent:#d9534f;--accent-hover:#c44540;--accent-subtle:#d9534f1a;--accent-glow:0 0 16px #d9534f26;--text-primary:#2d1b0e;--text-secondary:#7a6351;--text-muted:#a89580;--text-accent:#c04440;--border-subtle:#2d1b0e0f;--border-default:#2d1b0e1f;--border-active:#d9534f4d;--node-fill:#fff;--node-stroke:#d9534f;--node-text:#2d1b0e;--node-highlight:#e8734f;--edge-color:#ccae8e;--logo-bg:#d9534f;--dot-color:#2d1b0e0a;--toast-bg:#c83232eb;--toast-text:#fff;--toast-border:#ffffff26;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow:hidden}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background var(--transition-normal), color var(--transition-normal);font-family:Space Grotesk,-apple-system,BlinkMacSystemFont,sans-serif;font-weight:500}#app{flex-direction:column;height:100vh;display:flex}#header{height:var(--header-height);background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);z-index:10;transition:background var(--transition-normal), border-color var(--transition-normal);flex-shrink:0;justify-content:space-between;align-items:center;padding:0 20px;display:flex}.header-left{align-items:center;gap:16px;display:flex}.logo{cursor:default;-webkit-user-select:none;user-select:none;align-items:center;gap:10px;display:flex}.logo-bg{fill:var(--logo-bg);transition:fill var(--transition-normal)}.logo-text{letter-spacing:-.03em;color:var(--accent);transition:color var(--transition-normal);font-family:Syne,Space Grotesk,sans-serif;font-size:1.25rem;font-weight:800}.header-right{align-items:center;gap:8px;display:flex}.theme-toggle{width:36px;height:36px;color:var(--text-secondary);background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);justify-content:center;align-items:center;display:flex}.theme-toggle:hover{color:var(--accent);border-color:var(--border-active);background:var(--bg-hover)}[data-theme=dark] .icon-sun{display:block}[data-theme=dark] .icon-moon,[data-theme=light] .icon-sun{display:none}[data-theme=light] .icon-moon,.icon-sun{display:block}.icon-moon{display:none}.github-link{color:var(--text-secondary);transition:color var(--transition-fast);align-items:center;display:flex}.github-link:hover{color:var(--text-primary)}#main{flex:1;display:flex;overflow:hidden}.panel{background:var(--bg-panel);border-right:1px solid var(--border-subtle);transition:background var(--transition-normal), border-color var(--transition-normal)}#input-panel{width:var(--panel-width);flex-direction:column;flex-shrink:0;display:flex;overflow-y:auto}#input-panel::-webkit-scrollbar{width:5px}#input-panel::-webkit-scrollbar-track{background:0 0}#input-panel::-webkit-scrollbar-thumb{background:var(--bg-active);border-radius:3px}.panel-header{border-bottom:1px solid var(--border-subtle);padding:20px 20px 16px}.panel-header h2{text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:14px;font-family:Syne,Space Grotesk,sans-serif;font-size:.8rem;font-weight:700}.type-selector{background:var(--bg-primary);border-radius:var(--radius-md);transition:background var(--transition-normal);gap:4px;padding:4px;display:flex}.type-btn{color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;background:0 0;border:none;flex:1;justify-content:center;align-items:center;gap:5px;padding:8px 6px;font-family:Space Grotesk,sans-serif;font-size:.75rem;font-weight:600;display:flex}.type-btn:hover{color:var(--text-primary);background:var(--bg-hover)}.type-btn.active{color:#fff;background:var(--accent);box-shadow:0 2px 8px var(--accent-subtle)}.input-area{padding:16px 20px}.input-label{margin-bottom:8px;display:block}.input-label span{color:var(--text-secondary);font-size:.78rem}.code-input{width:100%;min-height:130px;color:var(--text-primary);background:var(--bg-primary);border:1px solid var(--border-default);border-radius:var(--radius-md);resize:vertical;transition:border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-normal), color var(--transition-normal);outline:none;padding:14px 16px;font-family:JetBrains Mono,monospace;font-size:.85rem;line-height:1.6}.code-input::placeholder{color:var(--text-muted)}.code-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-subtle)}.actions{gap:8px;padding:0 20px 16px;display:flex}.btn-primary{color:#fff;background:var(--accent);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);box-shadow:0 2px 10px var(--accent-subtle);border:none;flex:1;justify-content:center;align-items:center;gap:8px;padding:11px 20px;font-family:Space Grotesk,sans-serif;font-size:.88rem;font-weight:700;display:flex}.btn-primary:hover{background:var(--accent-hover);box-shadow:0 4px 18px var(--accent-subtle);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{color:var(--text-secondary);background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);padding:11px 20px;font-family:Space Grotesk,sans-serif;font-size:.88rem;font-weight:600}.btn-secondary:hover{color:var(--text-primary);background:var(--bg-hover);border-color:var(--border-active)}.examples-section{border-top:1px solid var(--border-subtle);padding:16px 20px 20px}.examples-section h3{text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:10px;font-family:Syne,Space Grotesk,sans-serif;font-size:.75rem;font-weight:700}.examples-list{flex-direction:column;gap:6px;display:flex}.example-item{color:var(--text-secondary);background:var(--bg-surface);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);border:1px solid #0000;align-items:center;gap:10px;padding:10px 12px;font-family:JetBrains Mono,monospace;font-size:.76rem;display:flex;overflow:hidden}.example-item:hover{color:var(--text-primary);background:var(--bg-hover);border-color:var(--border-active)}.example-item .example-tag{text-transform:uppercase;letter-spacing:.05em;color:var(--accent);background:var(--accent-subtle);border-radius:4px;flex-shrink:0;padding:3px 7px;font-family:Space Grotesk,sans-serif;font-size:.65rem;font-weight:700}.example-item .example-code{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.canvas-panel{background:var(--bg-primary);transition:background var(--transition-normal);border-right:none;flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden}.canvas-toolbar{background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);z-index:5;transition:background var(--transition-normal), border-color var(--transition-normal);justify-content:space-between;align-items:center;padding:10px 16px;display:flex}.toolbar-left{align-items:center;gap:12px;display:flex}.structure-badge{color:var(--accent);background:var(--accent-subtle);border:1px solid var(--border-active);border-radius:20px;padding:4px 12px;font-family:Space Grotesk,sans-serif;font-size:.75rem;font-weight:700}.toolbar-right{align-items:center;gap:4px;display:flex}.tool-btn{width:32px;height:32px;color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:1px solid #0000;justify-content:center;align-items:center;display:flex}.tool-btn:hover{color:var(--text-primary);background:var(--bg-hover);border-color:var(--border-default)}.toolbar-divider{background:var(--border-subtle);width:1px;height:20px;margin:0 4px}.canvas-container{background-image:radial-gradient(circle at 1px 1px, var(--dot-color) 1px, transparent 0);background-size:24px 24px;flex:1;position:relative;overflow:hidden}.vis-svg{width:100%;height:100%;display:block}.empty-state{text-align:center;pointer-events:none;flex-direction:column;justify-content:center;align-items:center;gap:16px;display:flex;position:absolute;inset:0}.empty-state.hidden{display:none}.empty-icon{animation:4s ease-in-out infinite float}.empty-svg{color:var(--accent)}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.empty-state h3{color:var(--text-primary);font-family:Syne,Space Grotesk,sans-serif;font-size:1.3rem;font-weight:800}.empty-state p{max-width:300px;color:var(--text-secondary);font-size:.85rem;line-height:1.6}.empty-state kbd{color:var(--text-accent);background:var(--bg-surface);border:1px solid var(--border-default);border-radius:4px;padding:2px 8px;font-family:Space Grotesk,sans-serif;font-size:.75rem;font-weight:700;display:inline-block}.edge-line{stroke:var(--edge-color);stroke-width:2px;fill:none;opacity:0;animation:.5s forwards edgeFadeIn}.vis-svg .arrow-marker{fill:var(--edge-color)}.node-group{cursor:pointer;opacity:0;animation:nodePopIn .4s var(--transition-spring) forwards}.node-circle{fill:var(--node-fill);stroke:var(--node-stroke);stroke-width:2.5px;transition:all var(--transition-fast)}.node-group:hover .node-circle{stroke:var(--node-highlight);stroke-width:3px;filter:drop-shadow(0 0 10px var(--accent-subtle))}.node-text{fill:var(--node-text);text-anchor:middle;dominant-baseline:central;pointer-events:none;font-family:JetBrains Mono,monospace;font-size:13px;font-weight:600}.node-index{fill:var(--text-muted);text-anchor:middle;pointer-events:none;font-family:JetBrains Mono,monospace;font-size:10px}.ll-rect{fill:var(--node-fill);stroke:var(--node-stroke);stroke-width:2.5px;rx:8;transition:all var(--transition-fast)}.node-group:hover .ll-rect{stroke:var(--node-highlight);stroke-width:3px;filter:drop-shadow(0 0 10px var(--accent-subtle))}.ll-arrow{stroke:var(--edge-color);stroke-width:2px;fill:none;marker-end:url(#arrowhead)}.ll-null{fill:var(--text-muted);text-anchor:middle;dominant-baseline:central;font-family:JetBrains Mono,monospace;font-size:11px}.matrix-cell{fill:var(--node-fill);stroke:var(--border-default);stroke-width:1px;rx:4;transition:all var(--transition-fast)}.matrix-cell:hover{stroke:var(--accent);stroke-width:2px}.matrix-cell.cell-highlight{fill:var(--accent-subtle);stroke:var(--accent)}.matrix-text{fill:var(--text-primary);text-anchor:middle;dominant-baseline:central;pointer-events:none;font-family:JetBrains Mono,monospace;font-size:12px;font-weight:500}.matrix-index{fill:var(--text-muted);text-anchor:middle;dominant-baseline:central;pointer-events:none;font-family:JetBrains Mono,monospace;font-size:10px}.edge-weight{fill:var(--text-muted);text-anchor:middle;dominant-baseline:central;font-family:JetBrains Mono,monospace;font-size:11px}@keyframes nodePopIn{0%{opacity:0;transform:scale(.6)}to{opacity:1;transform:scale(1)}}@keyframes edgeFadeIn{0%{opacity:0}to{opacity:1}}.node-group,.edge-line{animation-delay:var(--delay,0s)}.toast{color:var(--toast-text);background:var(--toast-bg);border:1px solid var(--toast-border);border-radius:var(--radius-md);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);opacity:0;transition:all var(--transition-normal);z-index:100;pointer-events:none;padding:12px 24px;font-family:Space Grotesk,sans-serif;font-size:.85rem;font-weight:600;position:fixed;bottom:24px;left:50%;transform:translate(-50%)translateY(20px)}.toast.show{opacity:1;transform:translate(-50%)translateY(0)}.node-tooltip{color:var(--text-primary);background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-sm);pointer-events:none;z-index:50;opacity:0;transition:opacity var(--transition-fast);padding:6px 12px;font-family:JetBrains Mono,monospace;font-size:.78rem;position:fixed;box-shadow:0 4px 16px #0003}.node-tooltip.visible{opacity:1}@media (width<=768px){#main{flex-direction:column}#input-panel{border-right:none;border-bottom:1px solid var(--border-subtle);width:100%;max-height:45vh}.type-selector{flex-wrap:wrap}:root{--panel-width:100%}}