.login-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:2rem;text-align:center;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);width:100%}.login-container h1{color:#fff;font-size:2.5rem;margin-bottom:1rem;font-weight:600}.login-container p{color:#ffffffe6;font-size:1.125rem;margin-bottom:2rem}.google-signin-button{padding:1rem 2rem;background-color:#fff;color:#2d3748;border:none;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 6px #0000001a;display:flex;align-items:center;gap:.75rem}.google-signin-button:hover{transform:translateY(-2px);box-shadow:0 6px 8px #0003}.google-signin-button:active{transform:translateY(0);box-shadow:0 2px 4px #0000001a}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:#f8fafc;min-height:100vh;padding:1rem}.app{margin-left:250px;padding:20px;max-width:calc(100vw - 250px);overflow-x:hidden}.analytics{width:100%;padding:2rem;max-width:100%;height:calc(100vh - 2rem);overflow-y:auto;background-color:#fff;border-radius:12px;box-shadow:0 4px 6px #0000000d;box-sizing:border-box}.sidenav{position:fixed;top:0;left:0;height:100vh;width:250px;background-color:#f8f9fa;padding:20px;border-right:1px solid #e9ecef}.header{width:100%;display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;background-color:#f8fafc;border-radius:10px;border-bottom:1px solid #e2e8f0;margin-bottom:2rem}.header h1{margin:0;color:#2d3748;font-size:2rem;font-weight:600}.logout-button{padding:.75rem 1.5rem;background-color:#f56565;color:#fff;border:none;border-radius:8px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 4px #f565651a}.logout-button:hover{background-color:#e53e3e;box-shadow:0 4px 6px #f5656533}.side-nav{width:250px;height:100vh;background-color:#fff;border-right:1px solid #e2e8f0;padding:1rem;position:fixed;left:0;top:0;box-shadow:2px 0 10px #0000000d;z-index:1000;display:flex;flex-direction:column}.nav-links{display:flex;flex-direction:column;gap:.5rem;margin-top:1rem;margin-bottom:1rem}.nav-link{display:flex;align-items:center;gap:.75rem;padding:.875rem 1rem;color:#4a5568;text-decoration:none;border-radius:8px;transition:all .2s ease;font-weight:500}.nav-link:hover{background-color:#f7fafc;color:#2d3748}.nav-link.active{background-color:#667eea;color:#fff;box-shadow:0 2px 4px #667eea33}.nav-link svg{width:20px;height:20px}.todo-form{margin-bottom:2rem}.input-wrapper{position:relative;width:100%}.todo-input{width:100%;padding:1rem;font-size:1rem;border:2px solid #e2e8f0;border-radius:8px;transition:all .2s ease;outline:none}.todo-input:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.submit-icon{position:absolute;right:1rem;top:50%;transform:translateY(-50%);background:none;border:none;color:#667eea;cursor:pointer;padding:.5rem;border-radius:8px;transition:all .2s ease}.submit-icon:hover{background-color:#667eea1a}.todo-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.75rem}.todo-item{display:flex;align-items:center;padding:1.25rem;background-color:#fff;border-radius:12px;border:1px solid #e2e8f0;transition:all .2s ease;box-shadow:0 2px 4px #00000005}.todo-item:hover{transform:translateY(-1px);border-color:#667eea;box-shadow:0 4px 8px #667eea1a}.todo-checkbox{-moz-appearance:none;appearance:none;-webkit-appearance:none;width:1.5rem;height:1.5rem;border:2px solid #e2e8f0;border-radius:6px;margin-right:1rem;cursor:pointer;position:relative;transition:all .2s ease}.todo-checkbox:checked{background-color:#667eea;border-color:#667eea}.todo-checkbox:checked:after{content:"";position:absolute;left:50%;top:40%;width:4px;height:8px;border:solid white;border-width:0 2px 2px 0;transform:translate(-50%,-50%) rotate(45deg)}.todo-checkbox:hover{border-color:#667eea}.todo-text{flex:1;font-size:1rem;color:#2d3748;transition:color .2s ease}.todo-item.completed .todo-text{text-decoration:line-through;color:#a0aec0}.delete-button{padding:.75rem;background:none;border:none;color:#cbd5e0;cursor:pointer;border-radius:8px;transition:all .2s ease;display:flex;align-items:center;justify-content:center;margin-left:.5rem}.delete-button:hover{color:#f56565;background-color:#fff5f5}.delete-button:active{transform:scale(.95)}.empty-state{text-align:center;padding:4rem 2rem;color:#a0aec0;background-color:#fff;border-radius:12px;border:2px dashed #e2e8f0;margin-top:2rem}.empty-state svg{width:64px;height:64px;margin-bottom:1.5rem;color:#cbd5e0}.empty-state p{font-size:1.125rem;font-weight:500}.analytics{padding:2rem;max-width:100%;height:calc(100vh - 2rem);overflow-y:auto;background-color:#fff;border-radius:12px;box-shadow:0 4px 6px #0000000d}.analytics h2{font-size:1.875rem;font-weight:600;color:#2d3748;margin-bottom:2rem;padding-bottom:1rem;border-bottom:2px solid #e2e8f0}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;margin-bottom:3rem}.stat-card{background:white;padding:1.75rem;border-radius:1rem;box-shadow:0 4px 6px #0000000d;transition:all .3s ease;border:1px solid #e2e8f0}.stat-card:hover{transform:translateY(-4px);box-shadow:0 8px 16px #0000001a}.stat-card h3{font-size:1.125rem;font-weight:500;color:#718096;margin-bottom:.75rem}.stat-card p{font-size:2.25rem;font-weight:600;color:#2d3748;line-height:1}.chart-container{background:white;padding:2rem;border-radius:1rem;box-shadow:0 4px 6px #0000000d;height:calc(100vh - 400px);min-height:300px;width:100%;position:relative;border:1px solid #e2e8f0;margin-bottom:2rem}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.stat-card{padding:1.25rem}.chart-container{padding:1rem;overflow-x:auto}@media (max-width: 1024px){.analytics{padding:1.5rem}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.chart-container{padding:1.5rem}}@media (max-width: 768px){.analytics{margin-left:0;padding:1rem;border-radius:0}.analytics h2{font-size:1.5rem;margin-bottom:1.5rem;padding-bottom:.75rem}.stats-grid{grid-template-columns:repeat(2,1fr);gap:1rem}.stat-card{padding:1.25rem}.stat-card h3{font-size:1rem}.stat-card p{font-size:1.75rem}.chart-container{padding:1rem;min-height:300px;margin:0 -1rem;width:calc(100% + 2rem);border-radius:0}}@media (max-width: 480px){.analytics{padding:1rem}.analytics h2{font-size:1.25rem;margin-bottom:1.25rem}.stats-grid{grid-template-columns:1fr}.stat-card{padding:1rem}.stat-card:hover{transform:none;box-shadow:0 4px 6px #0000000d}.stat-card h3{font-size:.875rem;margin-bottom:.5rem}.stat-card p{font-size:1.5rem}.chart-container{padding:1rem;min-height:300px}}@media (max-width: 1024px){.app{margin-left:200px;max-width:calc(100% - 200px)}.side-nav{width:200px}}@media (max-width: 768px){body{padding:0}.app{margin-left:0;max-width:100%;min-height:100vh;padding:1rem}.nav-links{flex-direction:row;justify-content:center;margin-top:0;gap:1rem}.logout-button{position:absolute;top:50%;right:1rem;transform:translateY(-50%);padding:.5rem 1rem;font-size:.875rem;min-height:40px;display:flex;align-items:center;gap:.5rem;border-radius:8px;background-color:#f56565;color:#fff;box-shadow:0 2px 4px #0000001a;line-height:1}.logout-button:active{transform:translateY(-48%);background-color:#e53e3e}.logout-button svg{width:16px;height:16px}.analytics{width:100%;padding:1rem;margin:0;border-radius:8px;height:auto;min-height:calc(100vh - 2rem)}.side-nav{width:100%;height:auto;position:relative;padding:1rem;border-right:none;border-bottom:1px solid #e2e8f0}.nav-links{flex-direction:row;justify-content:center;margin-top:1rem;flex-wrap:wrap;gap:.5rem}.nav-link{padding:.5rem 1rem}.header{padding:1rem}.header h1{font-size:1.5rem}.todo-input{font-size:.875rem;padding:.75rem}.todo-item{padding:.75rem}}@media (max-width: 480px){.nav-links{gap:.25rem}.nav-link{padding:.5rem .75rem;font-size:.875rem}.header{flex-direction:column;gap:1rem;text-align:center}.todo-item{flex-wrap:wrap;gap:.5rem}.todo-text{width:calc(100% - 3rem);order:2}.todo-checkbox{order:1}.delete-button{order:3;width:100%;display:flex;justify-content:center;padding:.5rem;margin-top:.5rem;background-color:#f565651a}.chart-container{overflow-x:auto;padding:1rem}}.loading-spinner{width:40px;height:40px;border:3px solid rgba(102,126,234,.1);border-radius:50%;border-top-color:#667eea;animation:spin 1s ease-in-out infinite;margin:0 auto 1rem}.analytics{padding:2rem;max-width:1200px;margin:0 auto}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.stat-card{background:white;border-radius:10px;padding:1.5rem;box-shadow:0 4px 6px #0000001a;transition:transform .2s ease}.stat-card:hover{transform:translateY(-5px)}.stat-card h3{color:#4a5568;font-size:1rem;margin-bottom:.5rem;font-weight:500}.stat-card p{color:#2d3748;font-size:1.875rem;font-weight:600;margin:0}.chart-container{background:white;border-radius:10px;padding:2rem;box-shadow:0 4px 6px #0000001a;height:400px;margin-top:2rem}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4rem 2rem;text-align:center}.empty-state svg{margin-bottom:1.5rem;opacity:.5}.empty-state p{color:#718096;font-size:1.125rem}.loading-spinner{border:4px solid rgba(0,0,0,.1);border-left-color:#667eea;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin-bottom:1rem}@keyframes spin{to{transform:rotate(360deg)}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background:white;border-radius:12px;padding:2rem;width:90%;max-width:500px;box-shadow:0 10px 25px #0000001a;animation:slideIn .3s ease-out}@keyframes slideIn{0%{transform:translateY(-20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.modal-header h2{margin:0;color:#2d3748;font-size:1.5rem;font-weight:600}.close-button{background:none;border:none;font-size:1.5rem;color:#718096;cursor:pointer;padding:.5rem;transition:color .2s ease}.close-button:hover{color:#2d3748}.modal-body{text-align:center}.task-text{color:#4a5568;font-size:1.1rem;margin-bottom:2rem}.timer-display{font-size:4rem;font-weight:700;color:#2d3748;margin-bottom:2rem;font-family:monospace}.timer-controls{display:flex;gap:1rem;justify-content:center}.timer-button{padding:.75rem 2rem;border:none;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s ease}.timer-button.start{background-color:#48bb78;color:#fff}.timer-button.start:hover{background-color:#38a169}.timer-button.stop{background-color:#f56565;color:#fff}.timer-button.stop:hover{background-color:#e53e3e}.timer-button.reset{background-color:#edf2f7;color:#4a5568}.timer-button.reset:hover{background-color:#e2e8f0}*{margin:0;padding:0;box-sizing:border-box}:root{line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}html{scroll-behavior:smooth}body{min-width:320px;margin:0;padding:0;overflow-x:hidden;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}button,input,textarea{font-family:inherit}::selection{background-color:#667eea33;color:#2d3748}