.homepage{min-height:100vh;background:linear-gradient(135deg,var(--gradient-start, #c8d1da) 0%,var(--gradient-end, #f9de6b) 100%);display:flex;align-items:center;justify-content:center;padding:40px 20px}.homepage-container{max-width:1200px;width:100%;text-align:center;color:#fff}.homepage-header{margin-bottom:60px}.homepage-title{font-size:3.5rem;font-weight:700;margin-bottom:20px;text-shadow:2px 2px 8px rgba(0,0,0,.3);animation:fadeInDown .8s ease-out}.homepage-subtitle{font-size:1.8rem;margin-bottom:20px;opacity:.95;animation:fadeInDown .8s ease-out .2s both}.homepage-description{font-size:1.2rem;max-width:800px;margin:0 auto;opacity:.9;line-height:1.6;animation:fadeInDown .8s ease-out .4s both}.homepage-content{margin-bottom:60px}.homepage-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;margin-bottom:50px;animation:fadeInUp .8s ease-out .6s both}.feature-card{background:#ffffff26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;padding:30px 20px;transition:transform .3s ease,box-shadow .3s ease;border:1px solid rgba(255,255,255,.2)}.feature-card:hover{transform:translateY(-5px);box-shadow:0 10px 30px #0000004d;background:#fff3}.feature-icon{font-size:3rem;margin-bottom:15px}.feature-card h3{font-size:1.5rem;margin-bottom:12px;font-weight:600}.feature-card p{font-size:1rem;opacity:.9;line-height:1.5}.homepage-actions{display:flex;flex-direction:column;align-items:center;gap:20px;animation:fadeInUp .8s ease-out .8s both}.homepage-button{display:inline-block;padding:18px 50px;font-size:1.3rem;font-weight:600;text-decoration:none;border-radius:50px;transition:all .3s ease;box-shadow:0 4px 15px #0003}.homepage-button.primary{background:#fff;color:var(--primary-color, #7d8e9c);border:2px solid white}.homepage-button.primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0000004d;background:#fffffff2}.homepage-link{color:#fff;text-decoration:none;font-size:1.1rem;opacity:.9;border-bottom:2px solid transparent;transition:all .3s ease;padding-bottom:4px}.homepage-link:hover{opacity:1;border-bottom-color:#fff}.homepage-footer{margin-top:60px;padding-top:30px;border-top:1px solid rgba(255,255,255,.2);opacity:.8;font-size:.9rem}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 768px){.homepage-title{font-size:2.5rem}.homepage-subtitle{font-size:1.4rem}.homepage-description{font-size:1rem}.homepage-features{grid-template-columns:1fr;gap:20px}.homepage-button{padding:15px 40px;font-size:1.1rem}}.drawing-canvas-wrapper{position:relative;display:inline-block}.drawing-canvas{position:relative;border:2px solid #ddd;border-radius:8px;cursor:crosshair;background:#fff;touch-action:none;z-index:2;display:block}.grid-canvas{position:absolute;top:0;left:0;border:none;border-radius:0;z-index:3;pointer-events:none;display:block;background:transparent}.drawing-canvas:active{cursor:crosshair}.toolbar{display:flex;flex-direction:column;gap:20px}.toolbar h3{margin-bottom:10px;color:#333;font-size:1.2rem}.toolbar-section{padding-bottom:15px;border-bottom:1px solid #eee}.toolbar-section:last-child{border-bottom:none}.toolbar-btn{width:100%;padding:12px;border:none;border-radius:8px;font-size:1rem;cursor:pointer;transition:all .2s;font-weight:500}.optimize-btn{background:linear-gradient(135deg,var(--gradient-start) 0%,var(--gradient-end) 100%);color:#333}.optimize-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #7d8e9c66}.optimize-btn:disabled{opacity:.6;cursor:not-allowed}.action-buttons{display:flex;gap:10px}.action-buttons .toolbar-btn{flex:1}.undo-btn{background:#95a5a6;color:#fff}.undo-btn:hover:not(:disabled){background:#7f8c8d;transform:translateY(-2px);box-shadow:0 4px 12px #95a5a666}.undo-btn:disabled{opacity:.5;cursor:not-allowed}.clear-btn{background:#ff6b6b;color:#fff}.clear-btn:hover{background:#ee5a5a;transform:translateY(-2px);box-shadow:0 4px 12px #ff6b6b66}.toolbar-desc{font-size:.85rem;color:#666;margin-top:8px;text-align:center}.toolbar-label{font-size:.9rem;color:#666;margin-bottom:10px}.export-buttons{display:flex;gap:10px}.export-btn{flex:1;background:#4ecdc4;color:#fff}.export-btn:hover:not(:disabled){background:#3db8b0;transform:translateY(-2px);box-shadow:0 4px 12px #4ecdc466}.export-btn:disabled{opacity:.6;cursor:not-allowed}.tool-selection-buttons{display:flex;gap:10px}.tool-btn{background:#e0e0e0;color:#333;border:2px solid transparent}.tool-btn:hover{background:#d0d0d0;transform:translateY(-1px)}.tool-btn.active{background:var(--primary-color);color:#fff;border-color:var(--primary-color);box-shadow:0 2px 8px #7d8e9c4d}.eraser-size-control{padding:10px;background:#f5f5f5;border-radius:6px}.eraser-size-slider{width:100%;height:6px;border-radius:3px;background:#ddd;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.eraser-size-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary-color);cursor:pointer;box-shadow:0 2px 4px #0003}.eraser-size-slider::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--primary-color);cursor:pointer;border:none;box-shadow:0 2px 4px #0003}.canvas-size-control{margin-bottom:0;width:100%}.canvas-size-control h3{margin-bottom:15px;color:#333;font-size:1.2rem}.preset-sizes{margin-bottom:20px}.preset-label{font-size:.9rem;color:#666;margin-bottom:10px}.preset-btn{display:block;width:100%;padding:10px;margin-bottom:8px;border:2px solid #ddd;border-radius:6px;background:#fff;cursor:pointer;transition:all .2s;font-size:.95rem}.preset-btn:hover{border-color:var(--primary-color);background:#e8e6dc}.preset-btn.active{border-color:var(--primary-color);background:var(--primary-color);color:#fff}.custom-size{margin-bottom:15px}.custom-label{font-size:.9rem;color:#666;margin-bottom:10px}.custom-inputs{display:flex;align-items:center;gap:8px}.custom-inputs input{flex:1;padding:8px;border:2px solid #ddd;border-radius:6px;font-size:.9rem}.custom-inputs input:focus{outline:none;border-color:var(--primary-color)}.custom-inputs span{color:#666;font-weight:700}.custom-inputs button{padding:8px 16px;border:none;border-radius:6px;background:var(--primary-color);color:#fff;cursor:pointer;font-size:.9rem;transition:background .2s}.custom-inputs button:hover{filter:brightness(.9)}.resize-handle-info{padding:10px;background:#f5f5f5;border-radius:6px;font-size:.85rem;color:#666}.app{min-height:100vh;padding:20px}.app-header{text-align:center;color:#fff;margin-bottom:30px}.app-header h1{font-size:2.5rem;margin-bottom:10px;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.app-header p{font-size:1.2rem;opacity:.9}.app-header .domain-description{font-size:1rem;opacity:.8;margin-top:8px;font-style:italic}.app-container{display:flex;gap:20px;max-width:1400px;margin:0 auto;justify-content:center;align-items:flex-start}.app-row{display:flex;gap:20px;width:100%;justify-content:center;align-items:flex-start}.sidebar,.canvas-size-control-wrapper{background:#fff;border-radius:12px;padding:20px;box-shadow:0 10px 30px #0003;min-width:280px;display:flex;flex-direction:column}.canvas-container{background:#fff;border-radius:12px;padding:20px;box-shadow:0 10px 30px #0003;display:flex;flex-direction:column;align-items:center;gap:15px}.canvas-wrapper{position:relative;display:inline-block}.resize-handle{position:absolute;bottom:-8px;right:-8px;width:24px;height:24px;background:var(--primary-color);border-radius:50%;cursor:nwse-resize;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #0003;z-index:10;transition:opacity .2s,transform .2s;opacity:0;pointer-events:none}.resize-handle.visible{opacity:1;pointer-events:auto}.resize-handle:hover{transform:scale(1.2);filter:brightness(.9)}.resize-handle-icon{color:#fff;font-size:14px;font-weight:700;-webkit-user-select:none;user-select:none}.canvas-size-display{font-size:.9rem;color:#666;padding:8px 16px;background:#f5f5f5;border-radius:6px}.grid-buttons-container{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:10px}.grid-btn{padding:8px 16px;border:2px solid #ddd;border-radius:6px;background:#fff;color:#333;font-size:.9rem;cursor:pointer;transition:all .2s;font-weight:500}.grid-btn:hover{border-color:var(--primary-color);background:#e8e6dc;transform:translateY(-1px)}.grid-btn.active{border-color:var(--primary-color);background:var(--primary-color);color:#fff;box-shadow:0 2px 8px #7d8e9c4d}@media (max-width: 768px){.app-row{flex-direction:column;align-items:stretch}.sidebar,.canvas-container{width:100%}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #7d8e9c;--background-color: #e8e6dc;--gradient-start: #c8d1da;--gradient-mid1: #d4dce4;--gradient-mid2: #ebe4c8;--gradient-end: #f9de6b}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,var(--gradient-start) 0%,var(--gradient-mid1) 35%,var(--gradient-mid2) 65%,var(--gradient-end) 100%);min-height:100vh}#root{min-height:100vh}