:root{--slate-50: #f8fafc;--slate-100: #f1f5f9;--slate-200: #e2e8f0;--slate-300: #cbd5e1;--slate-400: #94a3b8;--slate-500: #64748b;--slate-600: #475569;--slate-700: #334155;--slate-800: #1e293b;--slate-900: #0f172a;--primary: #4f46e5;--primary-hover: #4338ca;--primary-light: rgba(79, 70, 229, .1);--secondary: #64748b;--danger: #ef4444;--success: #10b981;--warning: #f59e0b;--sidebar-w: 280px;--tools-w: 0px;--header-h: 56px;--mobile-topbar-h: 48px;--mobile-bottom-h: auto;--mobile-bottom-min-h: 104px;--radius: 12px;--radius-sm: 8px;--radius-xs: 6px;--shadow-sm: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / 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var(--slate-100)}.about-logo-wrap{width:80px;height:80px;background:#fff;border-radius:20px;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg)}.about-app-name{font-size:1.5rem;font-weight:800;color:var(--slate-900)}.about-app-name .version{font-size:.75rem;font-weight:500;color:var(--slate-400);background:var(--slate-100);padding:2px 8px;border-radius:999px;vertical-align:middle;margin-left:4px}.about-body{padding:24px;display:flex;flex-direction:column;gap:24px}.about-body p{font-size:.95rem;font-weight:500;line-height:1.6;color:var(--slate-600);text-align:center}.about-support-section{display:flex;flex-direction:column;gap:12px}.about-support-section h3{font-size:.7rem;font-weight:700;color:var(--slate-400);text-transform:uppercase;letter-spacing:.1em;text-align:center}.about-rikapi-card{display:flex;align-items:center;gap:16px;padding:16px;background:#fff1f2;border:1px solid #fecdd3;border-radius:16px;text-decoration:none;transition:all .2s 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img{width:100%;height:100%;object-fit:cover;pointer-events:none}.presets-tree-container{display:flex;flex-direction:column;gap:6px}.tree-folder{display:flex;flex-direction:column;border:1px solid var(--slate-200);border-radius:var(--radius-sm);overflow:hidden;background:#fff}.tree-folder-header{display:flex;align-items:center;gap:8px;padding:10px 12px;background:var(--slate-50);cursor:pointer;-webkit-user-select:none;user-select:none;transition:background .15s;min-height:44px}.tree-folder-header:hover{background:var(--slate-100)}.tree-folder-header:active{background:var(--slate-200)}.folder-icon{color:var(--primary);flex-shrink:0}.folder-name{flex:1;font-size:.875rem;font-weight:600;color:var(--slate-700)}.chevron-icon{color:var(--slate-400);transition:transform .2s ease;flex-shrink:0}.tree-folder.collapsed .chevron-icon{transform:rotate(-90deg)}.tree-folder-content{max-height:400px;overflow-y:auto;transition:max-height .3s ease-out;background:#fff}.tree-folder.collapsed .tree-folder-content{max-height:0;overflow:hidden}.tree-folder-content .presets-grid{padding:10px;grid-template-columns:repeat(3,1fr);gap:8px}.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.tool-btn{width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--slate-200);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--slate-600);transition:all .15s ease;position:relative}.tool-btn:hover{background:var(--slate-50);color:var(--primary);border-color:var(--primary)}.tool-btn.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 12px #4f46e559}.btn{padding:8px 16px;border-radius:var(--radius-sm);font-size:.8rem;font-weight:600;cursor:pointer;transition:all .15s ease;border:1px solid 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10px;font-size:.75rem}.touch-btn{min-height:44px}.prop-group{margin-bottom:16px}.prop-label{display:block;font-size:.7rem;font-weight:700;color:var(--slate-400);margin-bottom:8px;text-transform:uppercase;letter-spacing:.07em}.color-picker-grid{display:grid;grid-template-columns:repeat(9,1fr);gap:6px}.color-swatch{aspect-ratio:1;border-radius:50%;border:2px solid white;cursor:pointer;box-shadow:0 0 0 1px var(--slate-200);transition:transform .15s,box-shadow .15s;min-width:24px}.color-swatch:hover{transform:scale(1.15)}.color-swatch:active{transform:scale(.95)}.color-swatch.active{box-shadow:0 0 0 2px var(--primary),0 0 0 4px #fff,0 0 0 5px var(--primary)}.range-slider{width:100%;-webkit-appearance:none;appearance:none;background:var(--slate-200);height:5px;border-radius:3px;cursor:pointer}.range-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;background:var(--primary);border-radius:50%;cursor:pointer;border:2px solid white;box-shadow:0 0 0 1px 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scale(1)}.modal-title{font-size:1.1rem;font-weight:700;color:var(--slate-900);margin-bottom:20px}.modal-actions{display:flex;gap:10px;margin-top:20px;justify-content:flex-end}.mobile-file-actions{display:flex;flex-direction:column;gap:8px}.mb-2{margin-bottom:8px}.context-menu{position:fixed;z-index:9999;background:#fff;border-radius:var(--radius-sm);box-shadow:var(--shadow-xl);border:1px solid var(--slate-200);padding:4px;display:flex;flex-direction:column;min-width:160px}.ctx-btn{background:none;border:none;padding:10px 14px;text-align:left;font-size:.875rem;font-weight:500;color:var(--slate-700);border-radius:6px;cursor:pointer;width:100%;min-height:40px;transition:background .1s}.ctx-btn:hover{background:var(--slate-50)}.ctx-btn:active{background:var(--slate-100)}.ctx-btn-danger{color:var(--danger)}.ctx-btn-danger:hover{background:#fee2e2}.ctx-divider{height:1px;background:var(--slate-200);margin:4px 0}.hidden{display:none!important}.mt-auto{margin-top:auto}.mt-2{margin-top:8px}.mt-3{margin-top:12px}.mt-5{margin-top:20px}.border-t{border-top:1px solid var(--slate-200);padding-top:16px}.category-tabs{display:flex;gap:4px;overflow-x:auto;padding-bottom:8px;margin-bottom:8px;border-bottom:1px solid var(--slate-200);scrollbar-width:none}.category-tabs::-webkit-scrollbar{display:none}.category-tab{padding:5px 12px;border-radius:999px;border:1px solid var(--slate-200);background:#fff;font-size:.7rem;font-weight:600;color:var(--slate-600);white-space:nowrap;cursor:pointer;transition:all .15s;min-height:32px}.category-tab:hover{background:var(--slate-50);border-color:var(--slate-300)}.category-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}.file-actions-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.mobile-only{display:none!important}.desktop-only{display:flex}.sidebar-section.desktop-only{display:flex;flex-direction:column;gap:12px}.mobile-topbar{position:absolute;top:0;left:0;right:0;height:var(--mobile-topbar-h);background:#fffffff2;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--slate-200);display:flex;align-items:center;z-index:100;padding:0 4px;box-shadow:var(--shadow-sm)}.mobile-topbar-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;background:none;border:none;cursor:pointer;color:var(--slate-600);padding:6px 12px;border-radius:var(--radius-sm);min-width:60px;min-height:44px;transition:all .15s;font-size:.6rem;font-weight:600}.mobile-topbar-btn:active{background:var(--slate-100)}.mobile-topbar-btn 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span{font-size:.58rem;font-weight:700;color:inherit;line-height:1}.mobile-action-btn:active{transform:scale(.9)}.mobile-action-main{background:var(--slate-700);color:#fff;border-color:var(--slate-700)}.mobile-action-main:active{background:var(--slate-900)}.mobile-action-export{background:var(--primary);color:#fff;border-color:var(--primary)}.mobile-action-export:active{background:var(--primary-hover)}.drawer-overlay{position:fixed;inset:0;background:#0f172a66;backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);z-index:400;opacity:0;transition:opacity .25s ease}.drawer-overlay:not(.hidden){opacity:1}.drawer-close{position:absolute;top:8px;right:8px;width:36px;height:36px;border-radius:50%;background:var(--slate-100);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;color:var(--slate-600);transition:background .15s;z-index:10}.drawer-close:active{background:var(--slate-200)}@media screen and (max-height:500px)and (orientation:landscape){.mobile-only{display:flex!important}.desktop-only{display:none!important}.app-container{flex-direction:column}.header{display:none!important}.main-layout{flex:1;min-height:0;position:relative}.canvas-wrapper{position:absolute;inset:40px 0 0}.mobile-topbar{height:40px!important}.mobile-topbar-btn{min-height:40px!important;padding:2px 8px!important}.mobile-title{display:block!important;font-size:.75rem!important}.mobile-bottom-bar{flex-direction:row!important;height:64px!important;min-height:64px!important;padding-bottom:env(safe-area-inset-bottom,2px)!important;align-items:center!important}.mobile-tools-row{flex:1!important;padding:2px 4px!important;border-right:1px solid var(--slate-200);height:100%}.mobile-action-row{padding:0 6px!important;gap:4px!important;background:#fff;box-shadow:-5px 0 10px #0000000d;z-index:10;height:100%}.mobile-action-btn,.mobile-tool-btn{width:42px!important;height:48px!important;padding:4px 2px!important}.mobile-action-btn svg,.mobile-tool-btn svg{width:18px!important;height:18px!important}.sidebar{position:fixed;top:0;bottom:0;z-index:500;transition:transform .3s cubic-bezier(.4,0,.2,1);width:280px;max-width:80vw;padding:52px 12px 12px;border:none;box-shadow:var(--shadow-xl)}.left-sidebar{left:0;right:auto!important;transform:translate(-100%);border-right:1px solid var(--slate-200);border-radius:0 var(--radius) var(--radius) 0}.left-sidebar.drawer-open{transform:translate(0)}.right-sidebar{right:0;left:auto!important;transform:translate(100%);border-left:1px solid var(--slate-200);border-radius:var(--radius) 0 0 var(--radius)}.right-sidebar.drawer-open{transform:translate(0)}.tools-sidebar{display:none!important}.mobile-bottom-bar{position:relative;z-index:200;flex-shrink:0;height:auto;min-height:80px}.zoom-controls{bottom:12px;right:12px}.quick-actions{top:calc(var(--mobile-topbar-h) + 6px);right:8px}.color-picker-grid{grid-template-columns:repeat(9,1fr)}.tree-folder-content .presets-grid{grid-template-columns:repeat(4,1fr);gap:6px}}@media screen and (max-width:768px)and (orientation:portrait){.mobile-only{display:flex!important}.desktop-only,.header{display:none!important}.main-layout{flex:1;position:relative;min-height:0}.canvas-wrapper{position:absolute;inset:0;top:var(--mobile-topbar-h)}.sidebar{position:fixed;top:0;bottom:0;z-index:500;transition:transform .3s cubic-bezier(.4,0,.2,1);width:280px;max-width:85vw;padding:52px 12px 12px;border:none;box-shadow:var(--shadow-xl)}.left-sidebar{left:0;right:auto!important;transform:translate(-100%);border-radius:0 var(--radius) var(--radius) 0}.left-sidebar.drawer-open{transform:translate(0)}.right-sidebar{right:0;left:auto!important;transform:translate(100%);border-radius:var(--radius) 0 0 var(--radius)}.right-sidebar.drawer-open{transform:translate(0)}.tools-sidebar{display:none!important}.mobile-bottom-bar{position:relative;z-index:200;flex-shrink:0}}