:root{--bg-color: #121212;--surface-color: rgba(30, 30, 30, .7);--accent-color: #00ff88;--accent-hover: #00c3ff;--text-primary: #ffffff;--text-secondary: #a0a0a0;--toolbar-height: auto}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,sans-serif;background-color:var(--bg-color);color:var(--text-primary);overflow:hidden;touch-action:none}.overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#000c;display:flex;justify-content:center;align-items:center;z-index:9999;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.dialog-box{background:#1e1e1e;padding:40px;border-radius:20px;text-align:center;border:1px solid rgba(255,255,255,.1);box-shadow:0 20px 50px #00000080;max-width:600px}.dialog-box h2{margin-bottom:30px;font-size:2rem;background:linear-gradient(90deg,#0f8,#00c3ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.mode-cards{display:flex;gap:20px}.mode-card{flex:1;background:#ffffff0d;padding:30px 20px;border-radius:15px;cursor:pointer;border:2px solid transparent;transition:all .3s ease}.mode-card:hover{background:#ffffff1a;border-color:var(--accent-color);transform:translateY(-5px)}.mode-card h3{margin-bottom:15px;font-size:1.2rem}.mode-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.4}#app{display:flex;flex-direction:column;height:100vh;width:100vw}.main-content{display:flex;flex:1;overflow:hidden}.toolbar{height:var(--toolbar-height);background:var(--surface-color);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.1);display:flex;align-items:center;gap:4px;padding:6px 10px;z-index:100;overflow-x:auto;overflow-y:hidden;flex-shrink:0}.toolbar::-webkit-scrollbar{height:4px}.toolbar::-webkit-scrollbar-thumb{background:#fff3;border-radius:4px}.toolbar-spacer{flex:1 1 auto;min-width:8px}.tool-group{display:flex;flex-direction:column;gap:2px}.tool-select{background:#00000080;color:var(--text-primary);border:1px solid rgba(255,255,255,.2);border-radius:4px;font-size:.7rem;padding:2px;outline:none}.separator{width:1px;height:24px;background:#ffffff26;margin:0 4px}.app-title{font-weight:700;font-size:1.2rem;background:linear-gradient(90deg,#0f8,#00c3ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:1px}.tool-btn{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);color:var(--text-primary);padding:4px 8px;border-radius:6px;font-family:inherit;font-weight:500;font-size:.75rem;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;justify-content:center;white-space:nowrap}.tool-btn:hover{background:#ffffff1a;transform:translateY(-1px)}.tool-btn.active{background:var(--accent-color);color:#000;border-color:var(--accent-color);box-shadow:0 0 15px #0f86}.tool-btn.full-width{width:100%;margin-bottom:20px}.pro-btn{background:linear-gradient(45deg,#ff007f,#7a00ff);border:none;font-weight:600;box-shadow:0 4px 15px #ff007f66}.color-picker-wrapper{position:relative;cursor:pointer}input[type=range]{-webkit-appearance:none;width:100px;background:transparent}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;height:16px;width:16px;border-radius:50%;background:var(--accent-color);cursor:pointer;margin-top:-6px}input[type=range]::-webkit-slider-runnable-track{width:100%;height:4px;cursor:pointer;background:#fff3;border-radius:2px}.sidebar{width:250px;background:#181818;border-right:1px solid rgba(255,255,255,.1);padding:20px;display:flex;flex-direction:column;transition:transform .3s ease,width .3s ease}.sidebar.hidden{width:0;padding:0;border:none;overflow:hidden}.pages-list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:15px}.page-thumb{background:#2a2a2a;border-radius:8px;cursor:pointer;border:2px solid transparent;transition:all .2s ease;position:relative;aspect-ratio:1 / 1.414;overflow:hidden}.page-thumb:hover{border-color:#00ff8880}.page-thumb.active{border-color:var(--accent-color);box-shadow:0 0 10px #00ff884d}.page-thumb img{width:100%;height:100%;object-fit:contain}.page-thumb-number{position:absolute;top:5px;left:5px;background:#000000b3;padding:2px 6px;border-radius:4px;font-size:.8rem}.page-thumb-delete{position:absolute;top:5px;right:5px;background:#dc2626e6;border:1px solid rgba(255,255,255,.4);color:#fff;border-radius:50%;width:22px;height:22px;cursor:pointer;font-size:.85rem;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 5px #0006;z-index:10;transition:transform .15s ease,background .15s ease}.page-thumb-delete:hover,.page-thumb-delete:active{background:#ef4444;transform:scale(1.1)}.canvas-container{flex:1;position:relative;overflow:auto;background-color:var(--bg-color)}.notebook-mode .canvas-container{display:flex;justify-content:center;align-items:center;padding:40px;background-color:#000}.notebook-mode #inkCanvas{background:var(--bg-color);box-shadow:0 0 30px #ffffff0d;max-width:100%;max-height:100%;object-fit:contain;aspect-ratio:1 / 1.414}#inkCanvas{touch-action:none}.replay-bar{position:absolute;bottom:20px;left:50%;transform:translate(-50%);background:var(--surface-color);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.1);padding:10px 20px;border-radius:20px;display:flex;align-items:center;gap:15px;z-index:100;box-shadow:0 10px 30px #00000080}#sliderReplay{width:300px}#txtReplayInfo{font-size:.9rem;color:var(--text-secondary);min-width:120px;text-align:center}.color-swatch{width:28px;height:28px;border-radius:50%;border:2px solid rgba(255,255,255,.3);cursor:pointer;transition:transform .15s}.color-swatch:hover{transform:scale(1.15)}.color-palette{position:fixed;z-index:9999;background:#1e1e1e;border:1px solid rgba(255,255,255,.15);border-radius:12px;padding:12px;box-shadow:0 10px 30px #0009}.palette-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:8px}.palette-color{width:28px;height:28px;border-radius:50%;cursor:pointer;border:2px solid transparent;transition:transform .15s,border-color .15s}.palette-color:hover{transform:scale(1.2);border-color:var(--accent-color)}.color-palette #colorPicker{width:100%;height:30px;border:none;border-radius:6px;cursor:pointer}.lasso-menu{position:fixed;background:#1e1e1e;border:1px solid rgba(255,255,255,.15);border-radius:12px;padding:6px;z-index:200;box-shadow:0 10px 30px #0009;flex-direction:column;gap:2px;min-width:140px}.lasso-menu button{background:transparent;border:none;color:var(--text-primary);padding:8px 12px;text-align:left;cursor:pointer;border-radius:6px;font-family:inherit;font-size:.85rem;transition:background .15s}.lasso-menu button:hover{background:#ffffff1a}.lasso-menu-sep{height:1px;background:#ffffff1a;margin:2px 0}.tool-btn.touch-active{background:#f60;color:#000;border-color:#f60;box-shadow:0 0 15px #f606}.tool-btn.readonly-active{background:#f33;color:#fff;border-color:#f33;box-shadow:0 0 15px #f336}.tools-left{overflow-x:auto;flex-shrink:1;scrollbar-width:none}.tools-left::-webkit-scrollbar{display:none}.recent-docs{margin-top:24px;width:100%;max-width:600px}.recent-docs h3{color:var(--text-secondary);font-size:.9rem;margin-bottom:12px}.recent-list{display:flex;flex-direction:column;gap:6px;max-height:200px;overflow-y:auto}.recent-item{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:8px;cursor:pointer;transition:background .15s}.recent-item:hover{background:#ffffff1a}.recent-item-name{color:var(--text-primary);font-weight:500;font-size:.85rem}.recent-item-date{color:var(--text-secondary);font-size:.75rem}.recent-item-delete{background:none;border:none;color:#f44;cursor:pointer;font-size:.8rem;padding:2px 6px;border-radius:4px}.recent-item-delete:hover{background:#f003}.tool-btn.snap-active{background:#0af;color:#000;border-color:#0af;box-shadow:0 0 15px #0af6}.folder-item{display:flex;align-items:center;gap:8px;padding:8px 12px;cursor:pointer;border-radius:6px;transition:background .15s;color:var(--text-primary);font-size:.85rem}.folder-item:hover{background:#ffffff1a}.folder-item .folder-icon{font-size:1.1rem}.folder-item .folder-name{flex:1}.folder-item .folder-file-count{color:var(--text-secondary);font-size:.75rem}.folder-children{margin-left:20px;border-left:1px solid rgba(255,255,255,.1);padding-left:8px}.folder-file-item{display:flex;align-items:center;gap:8px;padding:6px 8px;cursor:pointer;border-radius:4px;font-size:.8rem;color:var(--text-secondary);transition:background .15s}.folder-file-item:hover{background:#ffffff1a;color:var(--text-primary)}.welcome-dialog{max-width:680px;width:90%;animation:welcomeFadeIn .5s cubic-bezier(.16,1,.3,1);background:#1a1a1af2;backdrop-filter:blur(15px);-webkit-backdrop-filter:blur(15px);border:1px solid rgba(255,255,255,.08)}@keyframes welcomeFadeIn{0%{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.welcome-subtitle{color:var(--text-secondary);font-size:.95rem;line-height:1.5;margin-top:-15px;margin-bottom:25px}.device-options{display:flex;gap:24px;justify-content:center;width:100%;margin-top:10px}.device-card{flex:1;background:#ffffff08;padding:30px 24px;border-radius:20px;border:1px solid rgba(255,255,255,.06);display:flex;flex-direction:column;align-items:center;text-align:center;transition:all .3s cubic-bezier(.25,.8,.25,1);min-height:360px;justify-content:space-between}.device-card:hover{background:#ffffff0f;border-color:var(--accent-color);transform:translateY(-4px);box-shadow:0 12px 30px #00ff880d}.device-icon{font-size:3rem;margin-bottom:12px;filter:drop-shadow(0 0 8px rgba(255,255,255,.1))}.device-card h3{font-size:1.25rem;margin-bottom:10px;color:var(--text-primary);font-weight:600}.device-desc{color:var(--text-secondary);font-size:.85rem;line-height:1.5;margin-bottom:24px;flex-grow:1}.device-btn{cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;border:none;font-family:inherit;font-size:.85rem;font-weight:600;padding:12px 20px;border-radius:12px;transition:all .2s ease;width:100%;text-align:center;box-sizing:border-box}.btn-store{background:#0078d4;color:#fff;box-shadow:0 4px 12px #0078d440}.btn-store:hover{background:#106ebe;transform:translateY(-1px);box-shadow:0 6px 16px #0078d466}.btn-pwa{background:var(--accent-color);color:#000;box-shadow:0 4px 12px #00ff8826}.btn-pwa:hover{background:#0d7;transform:translateY(-1px);box-shadow:0 6px 16px #00ff884d}.btn-install-auto{background:linear-gradient(90deg,#0f8,#00c3ff);color:#000;box-shadow:0 4px 12px #0f83;animation:pulseGlow 2s infinite}@keyframes pulseGlow{0%{box-shadow:0 4px 12px #0f83}50%{box-shadow:0 4px 20px #0f86}to{box-shadow:0 4px 12px #0f83}}.btn-install-auto:hover{transform:translateY(-1px);box-shadow:0 6px 20px #0f86}.btn-success{background:var(--accent-color);color:#000;box-shadow:0 4px 12px #00ff8826}.btn-success:hover{background:#0d7;transform:translateY(-1px);box-shadow:0 6px 16px #00ff884d}.tutorial-tabs{display:flex;gap:8px;border-bottom:1px solid rgba(255,255,255,.08);padding-bottom:10px;margin-bottom:24px;overflow-x:auto;scrollbar-width:none}.tutorial-tabs::-webkit-scrollbar{display:none}.tab-btn{background:transparent;border:none;padding:8px 16px;border-radius:8px;color:var(--text-secondary);cursor:pointer;font-size:.8rem;font-weight:500;font-family:inherit;transition:all .2s;white-space:nowrap}.tab-btn:hover{color:var(--text-primary);background:#ffffff0a}.tab-btn.active{color:var(--accent-color);background:#00ff8814;font-weight:600}.tab-contents{min-height:220px}.tab-content{display:none;text-align:left}.tab-content.active{display:block;animation:fadeInTab .3s ease-out}@keyframes fadeInTab{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.step-list{display:flex;flex-direction:column;gap:12px}.step-item{display:flex;gap:14px;align-items:flex-start;background:#ffffff03;padding:12px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.03)}.step-number{background:#00ff881f;color:var(--accent-color);font-weight:700;width:24px;height:24px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;font-size:.8rem}.step-item p{margin:0;font-size:.85rem;line-height:1.5;color:#e0e0e0}.step-item strong{color:var(--accent-color)}.tutorial-actions{display:flex;justify-content:space-between;align-items:center;border-top:1px solid rgba(255,255,255,.08);padding-top:20px;margin-top:20px;gap:12px}.tutorial-actions .tool-btn{padding:12px 20px;font-size:.85rem;border-radius:12px}@media (max-width: 640px){.device-options{flex-direction:column;gap:16px}.device-card{min-height:auto;padding:24px 20px}.tutorial-actions{flex-direction:column-reverse;width:100%}.tutorial-actions button,.tutorial-actions a{width:100%}}.limit-dialog{max-width:500px;width:90%;border:1px solid rgba(255,71,87,.25);background:#1e1414fa;box-shadow:0 20px 50px #ff475726;animation:limitFadeIn .4s cubic-bezier(.175,.885,.32,1.275)}@keyframes limitFadeIn{0%{opacity:0;transform:scale(.95) translateY(15px)}to{opacity:1;transform:scale(1) translateY(0)}}.limit-icon{font-size:3.5rem;margin-bottom:15px;animation:pulseWarning 2s infinite;display:inline-block}@keyframes pulseWarning{0%{transform:scale(1);filter:drop-shadow(0 0 5px rgba(255,71,87,.2))}50%{transform:scale(1.05);filter:drop-shadow(0 0 15px rgba(255,71,87,.5))}to{transform:scale(1);filter:drop-shadow(0 0 5px rgba(255,71,87,.2))}}.limit-dialog h2{font-size:1.8rem;background:linear-gradient(90deg,#ff4757,#ff6b81);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:20px}.limit-message{font-size:1.05rem;font-weight:500;color:var(--text-primary);margin-bottom:12px}.limit-details{font-size:.9rem;color:#ff6b81;background:#ff475714;border:1px dashed rgba(255,71,87,.2);padding:10px 14px;border-radius:8px;margin-bottom:16px;line-height:1.4}.limit-advice{font-size:.85rem;color:var(--text-secondary);line-height:1.5;margin-bottom:28px}.limit-actions{display:flex;gap:12px}.limit-actions button{padding:12px 20px}@media (max-width: 500px){.limit-actions{flex-direction:column;gap:10px;width:100%}.limit-actions button{width:100%}}