@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap";:root{--bg-dark: #0a0e17;--panel-bg: rgba(15, 23, 42, .78);--panel-border: rgba(51, 65, 85, .6);--panel-glow: rgba(0, 240, 255, .12);--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--cyan: #00f0ff;--blue: #38bdf8;--purple: #a855f7;--magenta: #ec4899;--amber: #ffd166;--emerald: #10b981;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", monospace;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px}*{box-sizing:border-box;margin:0;padding:0}body,html{width:100%;height:100%;overflow:hidden;background-color:var(--bg-dark);color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased}#app{width:100vw;height:100vh;position:relative;overflow:hidden}.top-nav{position:absolute;top:0;left:0;right:0;height:60px;background:var(--panel-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--panel-border);display:flex;align-items:center;justify-content:space-between;padding:0 20px;z-index:50}.brand{display:flex;align-items:center;gap:10px}.logo-icon{width:34px;height:34px;border-radius:var(--radius-sm);background:linear-gradient(135deg,#00f0ff33,#a855f733);border:1px solid rgba(0,240,255,.4);display:flex;align-items:center;justify-content:center;color:var(--cyan)}.brand-text .title{font-family:var(--font-mono);font-weight:700;font-size:15px;letter-spacing:.8px;color:#fff}.brand-text .badge{font-size:10px;font-family:var(--font-mono);font-weight:600;padding:2px 6px;background:#00f0ff26;color:var(--cyan);border-radius:4px;margin-left:6px;letter-spacing:.5px}.mode-tabs{display:flex;align-items:center;background:#1e293bb3;padding:4px;border-radius:var(--radius-md);border:1px solid var(--panel-border);gap:4px}.mode-tab{background:transparent;border:none;color:var(--text-secondary);font-size:13px;font-weight:500;padding:7px 14px;border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;gap:6px;transition:all .2s cubic-bezier(.4,0,.2,1)}.mode-tab:hover{color:var(--text-primary);background:#ffffff0d}.mode-tab.active{background:var(--cyan);color:#050b14;font-weight:600;box-shadow:0 0 16px #00f0ff59}.top-actions{display:flex;align-items:center;gap:12px}.action-btn{background:#1e293bb3;border:1px solid var(--panel-border);color:var(--text-primary);font-size:12px;font-weight:500;padding:7px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:5px}.action-btn:hover{background:#334155cc;border-color:var(--blue)}.audio-control-group{display:flex;align-items:center;gap:8px;background:#1e293bb3;padding:4px 10px;border-radius:var(--radius-sm);border:1px solid var(--panel-border)}.audio-toggle-btn{background:transparent;border:none;color:var(--text-secondary);font-size:12px;font-family:var(--font-mono);cursor:pointer;display:flex;align-items:center;gap:5px}.audio-toggle-btn.active{color:var(--emerald);font-weight:600}#canvas-container{width:100%;height:100%;position:absolute;top:0;left:0;z-index:1;overflow:hidden}.sidebar-panel{position:absolute;top:76px;left:18px;width:290px;max-height:calc(100vh - 150px);overflow-y:auto;background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);border-radius:var(--radius-lg);padding:16px;z-index:40;display:flex;flex-direction:column;gap:16px;box-shadow:0 10px 30px #0006}.sidebar-panel::-webkit-scrollbar{width:5px}.sidebar-panel::-webkit-scrollbar-thumb{background:var(--panel-border);border-radius:4px}.panel-section{display:flex;flex-direction:column;gap:10px;border-bottom:1px solid rgba(51,65,85,.4);padding-bottom:14px}.panel-section:last-child{border-bottom:none;padding-bottom:0}.section-title{font-size:11px;font-weight:700;font-family:var(--font-mono);color:var(--cyan);text-transform:uppercase;letter-spacing:.8px}.section-header-inline{display:flex;align-items:center;justify-content:space-between}.preset-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.preset-btn{background:#1e293b99;border:1px solid rgba(51,65,85,.6);color:var(--text-secondary);font-size:11px;font-weight:500;padding:7px 6px;border-radius:var(--radius-sm);cursor:pointer;text-align:center;transition:all .2s}.preset-btn:hover{background:#334155cc;color:var(--text-primary)}.preset-btn.active{background:#00f0ff26;border-color:var(--cyan);color:var(--cyan);font-weight:600}.control-row{display:flex;flex-direction:column;gap:6px}.control-label-group{display:flex;justify-content:space-between;align-items:center}.control-label-group label{font-size:12px;color:var(--text-secondary);font-weight:500}.control-val{font-family:var(--font-mono);font-size:12px;font-weight:600;color:var(--cyan)}.slider-hint{font-size:10px;color:var(--text-muted)}.sum-actions-row{display:flex;gap:6px}.btn-sm{flex:1;background:#1e293bcc;border:1px solid var(--panel-border);color:var(--text-primary);font-size:11px;font-weight:500;padding:6px 8px;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s;text-align:center}.btn-sm:hover{background:#00f0ff33;border-color:var(--cyan);color:var(--cyan)}.btn-sm.active{background:var(--cyan);color:#050b14;font-weight:600}.visual-toggle-row{display:flex;justify-content:space-between;gap:8px}.checkbox-label{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--text-secondary);cursor:pointer}.checkbox-label input[type=checkbox]{accent-color:var(--cyan);cursor:pointer}input[type=range]{-webkit-appearance:none;width:100%;height:5px;background:#1e293b;border-radius:3px;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:15px;height:15px;border-radius:50%;background:var(--cyan);cursor:pointer;box-shadow:0 0 8px #00f0ff99;transition:transform .1s}input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2)}.switch{position:relative;display:inline-block;width:34px;height:18px}.switch input{opacity:0;width:0;height:0}.slider-round{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#334155;border-radius:18px;transition:.3s}.slider-round:before{position:absolute;content:"";height:12px;width:12px;left:3px;bottom:3px;background-color:#fff;border-radius:50%;transition:.3s}input:checked+.slider-round{background-color:var(--cyan)}input:checked+.slider-round:before{transform:translate(16px);background-color:#050b14}.cam-btn-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.cam-btn{background:#1e293b99;border:1px solid var(--panel-border);color:var(--text-secondary);font-size:11px;padding:7px 6px;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s}.cam-btn:hover{background:#334155cc;color:var(--text-primary)}.cam-btn.active{background:#a855f733;border-color:var(--purple);color:#e9d5ff;font-weight:600}.info-overlay-card{position:absolute;top:76px;right:18px;width:320px;background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);border-radius:var(--radius-lg);padding:16px;z-index:40;display:flex;flex-direction:column;gap:10px;box-shadow:0 10px 30px #0006}.card-header{display:flex;align-items:center;gap:8px}.math-badge{font-size:9px;font-family:var(--font-mono);font-weight:700;padding:2px 6px;background:#a855f733;color:var(--purple);border-radius:4px;letter-spacing:.5px}#math-title{font-size:13px;font-weight:600;color:var(--text-primary)}.math-formula{background:#0a0e17bf;border:1px solid rgba(51,65,85,.5);border-radius:var(--radius-sm);padding:10px 12px;font-family:var(--font-mono);font-size:12px;line-height:1.5;color:var(--cyan);overflow-x:auto;word-break:break-all}.math-explanation{font-size:11px;line-height:1.5;color:var(--text-secondary)}.hover-tooltip{position:absolute;pointer-events:none;background:#0f172aeb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--cyan);border-radius:var(--radius-md);padding:10px 14px;z-index:60;display:flex;flex-direction:column;gap:4px;font-size:11px;box-shadow:0 8px 24px #00f0ff40;transform:translate(0);transition:opacity .15s ease}.tooltip-header{display:flex;align-items:center;gap:6px;margin-bottom:2px}.tooltip-badge{font-size:8px;font-family:var(--font-mono);background:#00f0ff33;color:var(--cyan);padding:1px 4px;border-radius:3px}.tooltip-row{display:flex;justify-content:space-between;gap:12px;color:var(--text-secondary)}.tooltip-row strong{color:#fff;font-family:var(--font-mono)}.tooltip-row code{color:var(--cyan);font-family:var(--font-mono)}.tooltip-hint{font-size:9px;color:var(--emerald);margin-top:2px}.bottom-playback-bar{position:absolute;bottom:16px;left:50%;transform:translate(-50%);background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);border-radius:30px;padding:6px 18px;z-index:40;display:flex;align-items:center;gap:16px;box-shadow:0 10px 30px #00000080}.playback-controls{display:flex;align-items:center;gap:6px}.playback-btn{background:#1e293bcc;border:1px solid var(--panel-border);color:#fff;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:13px;transition:all .2s}.playback-btn:hover{background:var(--cyan);color:#050b14}.speed-control-group{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--text-muted)}.speed-pill{background:transparent;border:1px solid rgba(51,65,85,.6);color:var(--text-secondary);font-size:11px;font-family:var(--font-mono);padding:3px 8px;border-radius:12px;cursor:pointer;transition:all .2s}.speed-pill:hover{color:#fff;border-color:var(--blue)}.speed-pill.active{background:#38bdf833;border-color:var(--blue);color:var(--blue);font-weight:600}.status-indicator{display:flex;align-items:center;gap:6px;font-size:11px;font-family:var(--font-mono);color:var(--text-muted);border-left:1px solid rgba(51,65,85,.6);padding-left:12px}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--emerald);box-shadow:0 0 8px var(--emerald)}.modal-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#050b14d1;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center;z-index:100;transition:opacity .2s}.modal-overlay.hidden,.hidden{display:none!important}.modal-card{background:#0f172a;border:1px solid var(--panel-border);border-radius:var(--radius-lg);width:680px;max-width:92vw;padding:24px;box-shadow:0 20px 50px #000000b3;display:flex;flex-direction:column;gap:16px}.modal-card.wide-card{width:880px}.modal-header{display:flex;align-items:flex-start;justify-content:space-between}.modal-title{display:flex;align-items:center;gap:8px}.modal-title h3{font-size:17px;font-weight:600;color:#fff}.modal-badge{font-size:9px;font-family:var(--font-mono);font-weight:700;padding:2px 6px;background:#00f0ff26;color:var(--cyan);border-radius:4px}.close-modal-btn{background:transparent;border:none;color:var(--text-muted);font-size:24px;cursor:pointer;line-height:1;transition:color .2s}.close-modal-btn:hover{color:#fff}.modal-desc{font-size:13px;line-height:1.5;color:var(--text-secondary)}.modal-desc code{color:var(--cyan);font-family:var(--font-mono)}.drawing-area-container{display:flex;flex-direction:column;gap:12px}.canvas-wrapper{display:flex;flex-direction:column;gap:6px}.canvas-label{font-size:11px;font-family:var(--font-mono);color:var(--text-muted)}#draw-canvas,#spec-canvas{width:100%;border-radius:var(--radius-sm);border:1px solid #334155;background:#090e17;cursor:crosshair}.drawer-actions{display:flex;align-items:center;justify-content:space-between;margin-top:4px}.preset-templates{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-muted)}.btn-secondary{background:#1e293bcc;border:1px solid var(--panel-border);color:var(--text-secondary);font-size:11px;padding:5px 10px;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s}.btn-secondary:hover{background:#334155e6;color:#fff}.btn-primary{background:var(--cyan);border:none;color:#050b14;font-size:13px;font-weight:600;padding:8px 18px;border-radius:var(--radius-sm);cursor:pointer;box-shadow:0 0 16px #00f0ff4d;transition:all .2s}.btn-primary:hover{background:#38e1ff;box-shadow:0 0 22px #00f0ff80}.stage-pills{display:flex;gap:8px;background:#0f172a99;padding:4px;border-radius:var(--radius-md);border:1px solid var(--panel-border)}.stage-btn{flex:1;background:transparent;border:none;color:var(--text-secondary);font-size:12px;padding:6px 10px;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s}.stage-btn.active{background:#a855f733;color:#d8b4fe;font-weight:600;border:1px solid var(--purple)}.butterfly-diagram-container{background:#090e17;border:1px solid #1e293b;border-radius:var(--radius-md);padding:12px;height:280px}.algorithm-stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat-card{background:#1e293b80;border:1px solid rgba(51,65,85,.5);border-radius:var(--radius-sm);padding:10px 12px;display:flex;flex-direction:column;gap:4px}.stat-card.highlight{border-color:#00f0ff66;background:#00f0ff0f}.stat-label{font-size:11px;color:var(--text-muted)}.stat-val{font-family:var(--font-mono);font-size:15px;font-weight:700;color:#fff}.stat-sub{font-size:10px;color:var(--text-secondary)}.text-cyan{color:var(--cyan)!important}.text-purple{color:var(--purple)!important}@media(max-width:900px){.sidebar-panel{width:250px}.info-overlay-card,.top-actions .action-btn span{display:none}}