@import"https://fonts.googleapis.com/css2?family=Assistant:wght@400;600;700;800&family=Heebo:wght@400;700;900&display=swap";:root{--primary: #4f46e5;--primary-hover: #4338ca;--primary-light: rgba(79, 70, 229, .1);--bg-canvas: #f9fafb;--bg-ui: rgba(255, 255, 255, .92);--border-ui: rgba(0, 0, 0, .08);--text-main: #1f2937;--text-muted: #6b7280;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}canvas{text-rendering:optimizeLegibility}body,html{width:100%;height:100%;overflow:auto;background-color:var(--bg-canvas);overscroll-behavior:none;-webkit-overflow-scrolling:touch}#root{width:100%;height:100%}.whiteboard-container{width:100vw;height:100vh;position:relative;overflow:hidden;display:flex;flex-direction:column}.canvas-container{flex:1;position:relative;overflow:hidden}.grid-background{position:absolute;inset:0;pointer-events:none}.glass-panel{background:#ffffffbf;backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border:1px solid rgba(255,255,255,.3);box-shadow:0 4px 6px -1px #0000000d,0 10px 15px -3px #0000001a,inset 0 0 0 1px #fff6;border-radius:var(--radius-md)}.toolbar{position:absolute;left:20px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:6px;padding:8px;z-index:2000;max-height:calc(100vh - 200px);overflow:visible;transition:all .3s cubic-bezier(.4,0,.2,1)}.toolbar::-webkit-scrollbar{width:4px}.toolbar::-webkit-scrollbar-thumb{background:var(--border-ui);border-radius:2px}.top-bar{position:absolute;top:20px;left:20px;right:20px;height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;z-index:2000}.logo-icon-img{width:32px;height:32px;border-radius:var(--radius-sm);box-shadow:0 4px 12px #4f46e540;object-fit:cover}.board-title-container{display:flex;align-items:center;gap:8px;cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);transition:background .2s}.board-title-container:hover{background:#0000000d}.board-title-container:hover .edit-icon-mini{opacity:1;transform:translate(0)}.app-title{font-weight:600;font-size:18px;color:var(--text-main);line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:300px}.title-stack{display:flex;flex-direction:column;gap:2px;min-width:0}.app-description{font-size:13px;color:var(--text-muted);font-weight:400;max-width:450px;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.description-link{color:var(--primary);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px;transition:opacity .2s}.description-link:hover{opacity:.7}.edit-icon-mini{opacity:0;color:var(--primary);transform:translate(-4px);transition:all .2s}.save-indicator{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);font-weight:500}.top-controls{display:flex;align-items:center;gap:8px}.zoom-controls{position:absolute;right:20px;bottom:20px;display:flex;align-items:center;gap:4px;padding:4px;z-index:2000}.tool-button{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);border:none;background:transparent;cursor:pointer;color:var(--text-muted);transition:all .2s cubic-bezier(.4,0,.2,1);position:relative}.tool-button:hover:not(:disabled){background:#0000000d;color:var(--text-main);transform:translateY(-1px)}.tool-button:active:not(:disabled){transform:translateY(0)}.tool-button:disabled{opacity:.3;cursor:not-allowed}.tool-button.active{background:var(--primary);color:#fff;box-shadow:0 4px 12px #4f46e54d}.btn-primary{height:40px;padding:0 20px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);font-weight:500;font-size:14px;cursor:pointer;transition:all .2s;box-shadow:0 2px 8px #4f46e533;display:flex;align-items:center;gap:8px}.btn-primary:hover{background:var(--primary-hover);box-shadow:0 4px 12px #4f46e54d;transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{height:36px;padding:0 16px;background:var(--primary-light);color:var(--primary);border:1px solid var(--primary);border-radius:var(--radius-sm);font-weight:500;font-size:13px;cursor:pointer;transition:all .2s}.btn-secondary:hover{background:var(--primary);color:#fff}.divider{width:1px;height:24px;background:var(--border-ui);margin:0 4px}.divider-vertical{width:1px;height:24px;background:var(--border-ui);align-self:center}.context-menu{border-radius:var(--radius-md)!important;overflow:hidden;animation:menuAppear .15s ease-out;z-index:10000}@keyframes menuAppear{0%{opacity:0;transform:scale(.95) translateY(-5px)}to{opacity:1;transform:scale(1) translateY(0)}}.menu-section{display:flex;flex-direction:column}.menu-section-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:4px}.menu-item{display:flex;align-items:center;gap:8px;padding:6px 10px;border:none;background:transparent;cursor:pointer;width:100%;color:var(--text-main);font-size:13px;font-weight:500;transition:all .1s ease;border-radius:var(--radius-sm);margin:1px 0;text-align:left;white-space:nowrap}.menu-item:hover{background:#0000000a}.menu-item:active{background:#0000000f;transform:scale(.98)}.menu-item.danger{color:#ef4444}.menu-item.danger:hover{background:#ef444414}.menu-icon{display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--text-muted)}.menu-item:hover .menu-icon{color:var(--text-main)}.menu-item.danger .menu-icon{color:#ef4444}.menu-label{flex:1}.toolbar-divider{width:100%;height:1px;background:var(--border-ui);margin:4px 0}.zoom-display{min-width:60px;height:40px;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:500;color:var(--text-main);background:transparent;border:none;cursor:pointer;border-radius:var(--radius-sm);transition:background .2s}.zoom-display:hover{background:#0000000d}.dropdown{position:relative}.dropdown:hover .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-menu{position:absolute;top:calc(100% + 8px);right:0;min-width:180px;background:var(--bg-ui);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border-ui);border-radius:var(--radius-md);box-shadow:var(--shadow-xl);padding:6px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .2s cubic-bezier(.4,0,.2,1);z-index:100}.dropdown-menu button{width:100%;display:flex;align-items:center;gap:12px;padding:10px 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#0000001a}.modal-backdrop{position:fixed;inset:0;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:9000}.modal-content{width:90%;max-width:480px;background:#fff;border-radius:20px;overflow:hidden;box-shadow:0 25px 50px -12px #00000040}.share-modal-centered,.dialog-modal{max-width:400px}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid rgba(0,0,0,.05)}.modal-header h3{font-size:18px;font-weight:600;color:var(--text-main);margin:0}.modal-body{padding:24px}.modal-footer{padding:16px 24px;background:#00000005;display:flex;align-items:center;justify-content:space-between;border-top:1px solid rgba(0,0,0,.05)}.dialog-message{font-size:15px;color:var(--text-muted);line-height:1.5;margin-bottom:16px}.dialog-input{width:100%;padding:12px 16px;background:#00000008;border:1px solid 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rgba(0,0,0,.05)}.share-url-input{flex:1;border:none;background:transparent;padding:8px 12px;font-size:13px;color:var(--text-main);outline:none}.copy-button{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:none;background:#fff;color:var(--text-main);border-radius:10px;cursor:pointer;transition:all .2s;box-shadow:0 2px 4px #0000000d}.copy-button:hover{background:var(--primary);color:#fff}.copy-button.copied{background:#10b981;color:#fff}.privacy-badge{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-muted)}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInCentered{0%{opacity:0;transform:translateY(calc(-50% - 10px))}to{opacity:1;transform:translateY(-50%)}}.animate-in{animation:fadeIn .3s cubic-bezier(.4,0,.2,1) forwards}.animate-in-centered{animation:fadeInCentered .3s cubic-bezier(.4,0,.2,1) forwards}.spinner{width:32px;height:32px;border:3px solid rgba(0,0,0,.1);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:20px auto}.spinner-small{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}.checkpoints-bar{position:fixed;right:24px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:12px;padding:12px;z-index:2000}.checkpoint-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:#fff;border:1px solid rgba(0,0,0,.05);cursor:pointer;transition:all .2s;position:relative;box-shadow:0 4px 6px -1px #0000001a}.checkpoint-btn:hover{background:var(--primary-light);color:var(--primary);transform:scale(1.05)}.checkpoint-label{position:absolute;right:56px;background:var(--text-main);color:#fff;padding:4px 10px;border-radius:6px;font-size:12px;white-space:nowrap;pointer-events:none;opacity:0;transform:translate(10px);transition:all .2s}.checkpoint-btn:hover .checkpoint-label{opacity:1;transform:translate(0)}.btn-add-checkpoint{background:var(--primary);color:#fff;border:none}.btn-add-checkpoint:hover{background:var(--primary-hover);color:#fff}@media(max-width:768px){.checkpoints-bar{right:12px;padding:8px}}.checkpoints-bar{list-style:none}.grip-icon{margin-left:2px;opacity:.5;color:var(--text-muted);cursor:grab}.checkpoint-btn:active .grip-icon{cursor:grabbing}.checkpoint-btn.dragging{opacity:.5;transform:scale(1.05);box-shadow:var(--shadow-xl)}canvas{display:block}@media(max-width:768px){.toolbar{left:10px;padding:6px}.top-bar{left:10px;right:10px;padding:0 12px}.zoom-controls{right:10px;bottom:10px}.app-title,.keyboard-hint{display:none}.modal-container{width:95%}}@media print{.toolbar,.top-bar,.zoom-controls,.keyboard-hint,.grid-background{display:none!important}}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-canvas);padding:20px}.auth-card{width:100%;max-width:420px;padding:40px}.auth-header{text-align:center;margin-bottom:32px}.auth-logo{width:64px;height:64px;margin-bottom:16px;border-radius:var(--radius-md);box-shadow:0 8px 16px #4f46e533}.auth-header h1{font-size:24px;font-weight:700;color:var(--text-main);margin-bottom:8px}.auth-header p{color:var(--text-muted);font-size:14px}.input-group{margin-bottom:20px}.input-group label{display:block;font-size:13px;font-weight:600;color:var(--text-main);margin-bottom:8px}.input-wrapper{position:relative;display:flex;align-items:center}.input-wrapper svg{position:absolute;left:12px;color:var(--text-muted)}.input-wrapper input{width:100%;height:48px;padding:0 12px 0 40px;background:#fff;border:1px solid var(--border-ui);border-radius:var(--radius-sm);font-size:14px;transition:all .2s}.input-wrapper input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.auth-submit{width:100%;height:48px;margin-top:24px;justify-content:center;font-size:15px}.auth-error{background:#fef2f2;color:#dc2626;padding:12px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:20px;border:1px solid #fee2e2;text-align:center}.auth-toggle-link{background:none;border:none;color:var(--primary);font-weight:600;font-size:13px;cursor:pointer;margin:0 4px}.auth-footer{margin-top:32px;text-align:center;font-size:14px;color:var(--text-muted)}.dashboard-container{min-height:100vh;background:var(--bg-canvas);padding-bottom:60px;overflow-y:auto;overflow-x:hidden}.dashboard-header{height:72px;margin:20px;display:flex;align-items:center;justify-content:space-between;padding:0 32px}.header-left{display:flex;align-items:center;gap:16px}.header-left h1{font-size:20px;font-weight:700}.header-right{display:flex;align-items:center;gap:24px}.user-info{display:flex;flex-direction:column;align-items:flex-end}.user-name{font-weight:600;font-size:14px}.user-email{font-size:12px;color:var(--text-muted)}.dashboard-content{max-width:1200px;margin:0 auto;padding:0 20px}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;margin-top:40px}@media(max-width:768px){.dashboard-header{height:auto;margin:10px;padding:16px;flex-direction:column;gap:16px;align-items:flex-start}.header-right{width:100%;justify-content:space-between;gap:12px}.user-info{display:none}.dashboard-grid{grid-template-columns:1fr;gap:16px;margin-top:20px}.dashboard-content{padding:0 16px}.folders-bar{margin-top:20px;padding:4px}}.create-board-card{height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;border:2px dashed 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cubic-bezier(.4,0,.2,1);box-shadow:var(--shadow-sm)}.folder-tag:hover{border-color:var(--primary);color:var(--primary)}.folder-tag.active{background:var(--primary);color:#fff;border-color:var(--primary)}.board-badges{position:absolute;top:12px;right:12px;left:auto;display:flex;gap:6px;z-index:5}.board-badges span{padding:4px 8px;border-radius:6px;font-size:10px;font-weight:700;text-transform:uppercase}.badge-shared{background:#dcfce7;color:#166534}.badge-locked{background:#fee2e2;color:#991b1b;display:flex;align-items:center;justify-content:center;width:24px;height:24px;padding:0!important}.badge-hidden{background:#f3f4f6;color:#374151;display:flex;align-items:center;justify-content:center;width:24px;height:24px;padding:0!important}.board-actions-row{position:absolute;inset:0 0 auto;height:48px;background:#ffffff80;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:flex-start;padding:0 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