:root{--bg-primary: #000000;--bg-secondary: #111111;--bg-tertiary: #1a1a1a;--text-primary: #ffffff;--text-secondary: #e0e0e0;--text-muted: #a0a0a0;--accent-blue: #4299ff;--accent-green: #00d485;--accent-red: #ff4757;--accent-orange: #ffa502;--accent-purple: #9c88ff;--border-subtle: rgba(255, 255, 255, .1);--border-medium: rgba(255, 255, 255, .2);--shadow-subtle: 0 2px 8px rgba(0, 0, 0, .3);--shadow-medium: 0 4px 16px rgba(0, 0, 0, .4);--shadow-strong: 0 8px 32px rgba(0, 0, 0, .5);--glow-blue: 0 0 20px rgba(66, 153, 255, .3);--glow-green: 0 0 20px rgba(0, 212, 133, .3);--glow-red: 0 0 20px rgba(255, 71, 87, .3)}*{box-sizing:border-box;margin:0;padding:0}html{background:var(--bg-primary)!important;background-color:var(--bg-primary)!important;min-height:100vh!important;height:100%!important;scroll-behavior:smooth}body{background:var(--bg-primary)!important;background-color:var(--bg-primary)!important;margin:0!important;padding:0!important;min-height:100vh!important;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;font-size:16px;line-height:1.6;color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}#root{background:var(--bg-primary)!important;background-color:var(--bg-primary)!important;min-height:100vh!important;width:100%;display:flex;justify-content:center;align-items:flex-start;padding:20px;position:relative;background-image:radial-gradient(circle at 20% 20%,rgba(66,153,255,.05) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(0,212,133,.05) 0%,transparent 50%),radial-gradient(circle at 40% 60%,rgba(156,136,255,.03) 0%,transparent 50%);background-attachment:fixed}h1,h2,h3,h4,h5,h6{color:var(--text-primary);font-weight:600;line-height:1.3;margin-bottom:.5em}h1{font-size:2.5rem;background:linear-gradient(135deg,var(--accent-blue),var(--accent-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-align:center;margin-bottom:1rem}p{color:var(--text-secondary);margin-bottom:1rem}a{color:var(--accent-blue);text-decoration:none;font-weight:500;transition:all .3s ease;position:relative}a:hover{color:var(--accent-purple);text-shadow:var(--glow-blue)}a:after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--accent-blue),var(--accent-purple));transition:width .3s ease}a:hover:after{width:100%}button{background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));border:1px solid var(--border-medium);border-radius:12px;padding:12px 24px;font-size:1rem;font-weight:500;font-family:inherit;color:var(--text-primary);cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden;box-shadow:var(--shadow-subtle)}button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left .5s ease}button:hover{transform:translateY(-2px);box-shadow:var(--shadow-medium);border-color:var(--accent-blue);background:linear-gradient(135deg,var(--bg-tertiary),var(--bg-secondary))}button:hover:before{left:100%}button:active{transform:translateY(0);box-shadow:var(--shadow-subtle)}button:focus{outline:none;box-shadow:var(--shadow-medium),0 0 0 3px #4299ff4d}input{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:8px;padding:12px 16px;font-size:1rem;font-family:inherit;color:var(--text-primary);transition:all .3s ease;width:100%}input::placeholder{color:var(--text-muted)}input:focus{outline:none;border-color:var(--accent-blue);background:var(--bg-tertiary);box-shadow:0 0 0 3px #4299ff33}input:hover{border-color:var(--border-medium)}::-webkit-scrollbar{width:12px}::-webkit-scrollbar-track{background:var(--bg-secondary);border-radius:6px}::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--accent-blue),var(--accent-purple));border-radius:6px;border:2px solid var(--bg-secondary);transition:all .3s ease}::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,var(--accent-purple),var(--accent-blue));box-shadow:var(--glow-blue)}::selection{background:#4299ff4d;color:var(--text-primary)}::-moz-selection{background:#4299ff4d;color:var(--text-primary)}@keyframes slideIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes glow{0%,to{box-shadow:var(--shadow-subtle)}50%{box-shadow:var(--shadow-medium),var(--glow-blue)}}.animate-in{animation:slideIn .5s ease-out}.glow{animation:glow 3s ease-in-out infinite}@media (max-width: 768px){#root{padding:15px}h1{font-size:2rem}button{padding:10px 20px;font-size:.9rem}input{padding:10px 14px}}@media (max-width: 480px){#root{padding:10px}h1{font-size:1.8rem}button{padding:8px 16px;font-size:.85rem}input{padding:8px 12px}}@media (prefers-color-scheme: light){html,body,#root{background:var(--bg-primary)!important;background-color:var(--bg-primary)!important;color:var(--text-primary)!important}}@media (prefers-color-scheme: dark){html,body,#root{background:var(--bg-primary)!important;background-color:var(--bg-primary)!important;color:var(--text-primary)!important}}@media (prefers-contrast: high){:root{--border-subtle: rgba(255, 255, 255, .3);--border-medium: rgba(255, 255, 255, .5)}}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}#root{background-attachment:scroll}}#root{margin:0;padding:0;width:100%;min-height:100vh;background:transparent!important}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.react:hover{filter:drop-shadow(0 0 2em #61dafbaa)}@keyframes logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (prefers-reduced-motion: no-preference){a:nth-of-type(2) .logo{animation:logo-spin infinite 20s linear}}.card{padding:2em}.read-the-docs{color:#888}.todo-container{max-width:1200px;width:100%;margin:0 auto;padding:2rem 3rem;min-height:100vh;font-family:inherit;background:transparent!important;position:relative}.todo-header{text-align:center;margin-bottom:3rem;color:var(--text-primary);position:relative}.todo-header h1{font-size:3.5rem;margin:0;font-weight:800;background:linear-gradient(135deg,var(--accent-blue),var(--accent-purple),var(--accent-green));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-shadow:none;position:relative;animation:glow 4s ease-in-out infinite alternate}.todo-header h1:after{content:"";position:absolute;bottom:-10px;left:50%;transform:translate(-50%);width:100px;height:4px;background:linear-gradient(90deg,var(--accent-blue),var(--accent-purple));border-radius:2px;animation:slideIn 1s ease-out .5s both}.todo-subtitle{font-size:1.3rem;margin:1rem 0 0;color:var(--text-secondary);font-weight:400;opacity:.9;animation:slideIn 1s ease-out .7s both}.todo-stats{display:flex;justify-content:center;gap:2rem;margin-bottom:3rem;flex-wrap:wrap}.stat{background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);padding:2rem 3rem;border-radius:16px;text-align:center;color:var(--text-primary);border:1px solid var(--border-medium);box-shadow:var(--shadow-medium);transition:all .3s ease;position:relative;overflow:hidden;min-width:180px;flex:1;max-width:300px}.stat:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left .5s ease}.stat-number{display:block;font-size:3rem;font-weight:700;margin-bottom:.5rem;background:linear-gradient(135deg,var(--accent-blue),var(--accent-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-label{font-size:1rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;font-weight:500}.todo-input-section{margin-bottom:3rem;animation:slideIn 1s ease-out .9s both}.input-group{display:flex;gap:1.5rem;background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));padding:1.5rem;border-radius:16px;box-shadow:var(--shadow-medium);border:1px solid var(--border-medium);transition:all .3s ease;position:relative;overflow:hidden;width:100%;max-width:none}.input-group:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.05),transparent);transition:left .5s ease}.input-group:focus-within{border-color:var(--accent-blue);box-shadow:var(--shadow-strong),0 0 0 3px #4299ff33}.todo-input{flex:1;padding:1.2rem 1.5rem;border:none;outline:none;font-size:1.2rem;background:transparent;color:var(--text-primary);font-family:inherit;min-width:0}.todo-input::placeholder{color:var(--text-muted);transition:color .3s ease}.todo-input:focus::placeholder{color:var(--border-subtle)}.add-btn{padding:1.2rem 2.5rem;background:linear-gradient(135deg,var(--accent-blue),var(--accent-purple));color:#fff;border:none;border-radius:12px;font-weight:600;cursor:pointer;transition:all .3s ease;font-size:1.1rem;position:relative;overflow:hidden;box-shadow:var(--shadow-subtle);white-space:nowrap}.add-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s ease}.add-btn:hover{background:linear-gradient(135deg,var(--accent-purple),var(--accent-blue));transform:translateY(-2px);box-shadow:var(--shadow-medium),var(--glow-blue)}.add-btn:hover:before{left:100%}.add-btn:active{transform:translateY(0)}.todo-filters{display:flex;justify-content:center;gap:1rem;margin-bottom:3rem;flex-wrap:wrap;animation:slideIn 1s ease-out 1.1s both}.filter-btn{padding:1rem 2rem;background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));color:var(--text-secondary);border:1px solid var(--border-subtle);border-radius:25px;cursor:pointer;transition:all .3s ease;font-weight:500;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);position:relative;overflow:hidden;font-family:inherit;font-size:1rem;min-width:120px}.filter-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left .5s ease}.filter-btn:hover{background:linear-gradient(135deg,var(--bg-tertiary),var(--bg-secondary));color:var(--text-primary);border-color:var(--accent-blue);transform:translateY(-2px);box-shadow:var(--shadow-medium)}.filter-btn:hover:before{left:100%}.filter-btn.active{background:linear-gradient(135deg,var(--accent-blue),var(--accent-purple));color:#fff;border-color:var(--accent-blue);box-shadow:var(--shadow-medium),var(--glow-blue);transform:translateY(-2px)}.todo-actions{display:flex;justify-content:center;gap:1rem;margin-bottom:3rem;flex-wrap:wrap}.action-btn{padding:1rem 2rem;background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));color:var(--text-secondary);border:1px solid var(--border-subtle);border-radius:12px;cursor:pointer;transition:all .3s ease;font-weight:500;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);position:relative;overflow:hidden;font-family:inherit;font-size:1rem;min-width:140px}.action-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left .5s ease}.action-btn:hover:not(:disabled){background:linear-gradient(135deg,var(--bg-tertiary),var(--bg-secondary));color:var(--text-primary);transform:translateY(-2px);box-shadow:var(--shadow-medium)}.action-btn:hover:not(:disabled):before{left:100%}.action-btn:disabled{opacity:.5;cursor:not-allowed}.action-btn.danger:hover:not(:disabled){background:linear-gradient(135deg,var(--accent-red),#e84393);border-color:var(--accent-red);color:#fff;box-shadow:var(--shadow-medium),var(--glow-red)}.todo-list{background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));border-radius:16px;overflow:hidden;box-shadow:var(--shadow-strong);margin-bottom:3rem;border:1px solid var(--border-medium);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.empty-state{text-align:center;padding:4rem 2rem;color:var(--text-muted)}.empty-icon{font-size:4rem;margin-bottom:1rem;opacity:.5}.empty-state h3{margin:0 0 1rem;color:var(--text-secondary);font-size:1.5rem}.empty-state p{margin:0;color:var(--text-muted);font-size:1.1rem}.todo-items{list-style:none;margin:0;padding:0}.todo-item{padding:2rem;border-bottom:1px solid var(--border-subtle);transition:all .3s ease;position:relative;background:transparent}.todo-item:last-child{border-bottom:none}.todo-item.completed{opacity:.6;background:#ffffff05}.todo-item.priority-high{border-left:6px solid var(--accent-red);background:linear-gradient(90deg,rgba(255,71,87,.1) 0%,transparent 30%);position:relative}.todo-item.priority-high:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(90deg,rgba(255,71,87,.05) 0%,transparent 30%);pointer-events:none}.todo-item.priority-medium{border-left:6px solid var(--accent-orange);background:linear-gradient(90deg,rgba(255,165,2,.1) 0%,transparent 30%);position:relative}.todo-item.priority-medium:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(90deg,rgba(255,165,2,.05) 0%,transparent 30%);pointer-events:none}.todo-item.priority-low{border-left:6px solid var(--accent-blue);background:linear-gradient(90deg,rgba(66,153,255,.1) 0%,transparent 30%);position:relative}.todo-item.priority-low:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(90deg,rgba(66,153,255,.05) 0%,transparent 30%);pointer-events:none}.todo-content{display:flex;align-items:center;gap:1rem;margin-bottom:1rem;position:relative;z-index:1}.todo-checkbox{width:24px;height:24px;cursor:pointer;accent-color:var(--accent-blue);border-radius:4px}.todo-text{flex:1;font-size:1.3rem;color:var(--text-primary);cursor:pointer;padding:.75rem 1rem;border-radius:8px;transition:all .3s ease;background:transparent;line-height:1.5}.todo-item.completed .todo-text{text-decoration:line-through;color:var(--text-muted);opacity:.7}.priority-indicator{font-size:1.8rem;cursor:help;padding:.5rem .75rem;border-radius:20px;background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border-medium);display:flex;align-items:center;justify-content:center;min-width:50px;height:40px;box-shadow:var(--shadow-subtle);transition:all .3s ease}.priority-indicator.priority-high{background:linear-gradient(135deg,#ff6b6b,#ee5a24);color:#fff;border:2px solid #ff4757;box-shadow:0 4px 12px #ff6b6b66}.priority-indicator.priority-medium{background:linear-gradient(135deg,#feca57,#ff9ff3);color:#2f3542;border:2px solid #ff9f43;box-shadow:0 4px 12px #feca5766}.priority-indicator.priority-low{background:linear-gradient(135deg,#3742fa,#2f3542);color:#fff;border:2px solid #2742fa;box-shadow:0 4px 12px #3742fa66;font-weight:700}.edit-input{flex:1;padding:.5rem;border:2px solid #667eea;border-radius:4px;font-size:1.1rem;outline:none}.todo-actions-row{display:flex;justify-content:space-between;align-items:center;gap:1rem;position:relative;z-index:1}.priority-select{padding:.75rem;border:2px solid #e0e0e0;border-radius:8px;background:#fff;cursor:pointer;font-weight:500;font-size:.9rem;transition:all .3s ease;box-shadow:0 2px 4px #0000001a}.priority-select:hover{border-color:#667eea;box-shadow:0 4px 8px #667eea33}.priority-select:focus{border-color:#667eea;outline:none;box-shadow:0 0 0 3px #667eea33}.priority-select:disabled{opacity:.5;cursor:not-allowed}.edit-actions,.item-actions{display:flex;gap:.5rem}.edit-btn,.delete-btn,.save-btn,.cancel-btn{padding:.5rem 1rem;border:none;border-radius:4px;cursor:pointer;font-size:.9rem;transition:all .2s ease}.edit-btn{background:#74b9ff;color:#fff}.edit-btn:hover{background:#0984e3}.delete-btn{background:#ff7675;color:#fff}.delete-btn:hover{background:#d63031}.save-btn{background:#00b894;color:#fff}.save-btn:hover{background:#00a085}.cancel-btn{background:#636e72;color:#fff}.cancel-btn:hover{background:#2d3436}.todo-footer{background:#fff3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:2rem;border-radius:12px;text-align:center;color:#fff;border:1px solid rgba(255,255,255,.3)}.todo-footer p{margin:0 0 1rem;opacity:.9}.progress-bar{width:100%;height:8px;background:#ffffff4d;border-radius:4px;overflow:hidden;margin:1rem 0}.progress-fill{height:100%;background:linear-gradient(90deg,#00b894,#00cec9);transition:width .3s ease;border-radius:4px}.progress-text{font-size:1.1rem;font-weight:600;margin:1rem 0 0}@media (max-width: 1024px){.todo-container{max-width:900px;padding:2rem}}@media (max-width: 768px){.todo-container{padding:1.5rem;max-width:100%}.todo-header h1{font-size:2.5rem}.todo-stats{gap:1rem;flex-direction:column}.stat{padding:1.5rem 2rem;min-width:100%;max-width:none}.input-group{flex-direction:column;gap:1rem;padding:1.2rem}.add-btn{width:100%;padding:1rem 2rem}.todo-filters{flex-wrap:wrap;gap:.75rem}.filter-btn{flex:1;min-width:calc(50% - .375rem)}.todo-actions{flex-direction:column;gap:.75rem}.action-btn{width:100%}.todo-content,.todo-actions-row{flex-direction:column;align-items:flex-start;gap:1rem}}@keyframes slideIn{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.todo-item{animation:slideIn .3s ease-out}.todo-checkbox:focus,.todo-input:focus,.edit-input:focus,.priority-select:focus,button:focus{outline:2px solid #667eea;outline-offset:2px}