.app{min-height:100vh;display:flex;justify-content:center;padding:4rem 1.5rem;background:radial-gradient(ellipse 100% 80% at 50% -30%,rgba(168,85,247,.12),transparent 60%),radial-gradient(ellipse 60% 50% at 80% 20%,rgba(99,102,241,.06),transparent 50%),radial-gradient(ellipse 60% 50% at 20% 80%,rgba(168,85,247,.04),transparent 50%),var(--bg-primary)}.container{width:100%;max-width:540px}.header{text-align:center;margin-bottom:3rem}.title{font-size:2.5rem;font-weight:600;letter-spacing:-.03em;background:linear-gradient(135deg,var(--text-primary) 0%,var(--accent-light) 50%,var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem;text-shadow:0 0 40px rgba(168,85,247,.3)}.subtitle{font-size:1rem;color:var(--text-muted);font-weight:400}.input-form{display:flex;gap:.75rem;margin-bottom:2rem}.todo-input{flex:1;padding:1rem 1.25rem;background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;font-size:1rem;color:var(--text-primary);font-family:inherit;transition:all .2s ease}.todo-input::placeholder{color:var(--text-muted)}.todo-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow),0 0 20px #a855f71a;background:linear-gradient(135deg,var(--bg-secondary) 0%,rgba(168,85,247,.03) 100%)}.add-button{width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--gradient-start) 0%,var(--gradient-end) 100%);border:none;border-radius:12px;color:#fff;cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);flex-shrink:0;box-shadow:0 4px 15px #a855f740}.add-button:hover{background:linear-gradient(135deg,var(--accent-light) 0%,var(--accent) 100%);transform:translateY(-2px);box-shadow:0 8px 25px #a855f766}.add-button:active{transform:translateY(0)}.todo-list{display:flex;flex-direction:column;gap:.5rem}.todo-item{display:flex;align-items:center;gap:1rem;padding:1rem 1.25rem;background:linear-gradient(135deg,var(--bg-secondary) 0%,rgba(168,85,247,.02) 100%);border:1px solid var(--border);border-radius:12px;animation:slideIn .3s ease forwards;opacity:0;transform:translateY(10px);transition:all .25s cubic-bezier(.4,0,.2,1)}.todo-item:hover{background:linear-gradient(135deg,var(--bg-tertiary) 0%,rgba(168,85,247,.05) 100%);border-color:var(--border-accent);box-shadow:0 4px 20px #a855f714;transform:translate(4px)}.todo-item.completed{opacity:.6}.todo-item.completed .todo-text{text-decoration:line-through;color:var(--text-muted)}.todo-item.leaving{animation:slideOut .2s ease forwards}@keyframes slideIn{to{opacity:1;transform:translateY(0)}}@keyframes slideOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(20px)}}.checkbox{width:24px;height:24px;padding:0;background:transparent;border:none;cursor:pointer;flex-shrink:0}.checkbox-inner{width:24px;height:24px;display:flex;align-items:center;justify-content:center;border:2px solid var(--border-hover);border-radius:6px;transition:all .2s ease;color:#fff}.checkbox:hover .checkbox-inner{border-color:var(--accent);background:var(--accent-glow);box-shadow:0 0 15px #a855f733}.todo-item.completed .checkbox-inner{background:linear-gradient(135deg,var(--gradient-start) 0%,var(--gradient-end) 100%);border-color:var(--accent);box-shadow:0 0 20px var(--success-glow),inset 0 0 10px #ffffff1a}.todo-text{flex:1;font-size:1rem;color:var(--text-primary);word-break:break-word;transition:all .2s ease}.delete-button{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:8px;color:var(--text-muted);cursor:pointer;opacity:0;transition:all .2s ease;flex-shrink:0}.todo-item:hover .delete-button{opacity:1}.delete-button:hover{background:#f43f5e1f;color:var(--danger);box-shadow:0 0 15px #f43f5e26}.completed-section{margin-top:2.5rem;padding-top:2rem;border-top:1px solid var(--border);position:relative}.completed-section:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:60px;height:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent);border-radius:2px}.completed-header{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem;padding:0 .25rem}.completed-label{font-size:.875rem;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.completed-count{display:flex;align-items:center;justify-content:center;width:24px;height:24px;font-size:.75rem;font-weight:600;background:linear-gradient(135deg,#a855f733,#6366f126);color:var(--accent-light);border-radius:6px;border:1px solid rgba(168,85,247,.2)}.completed-list .todo-item{background:var(--bg-primary)}.empty-state{text-align:center;padding:4rem 2rem;color:var(--text-muted)}.empty-icon{margin-bottom:1.5rem;color:var(--accent);opacity:.5;filter:drop-shadow(0 0 20px rgba(168,85,247,.3))}.empty-text{font-size:1.125rem;font-weight:500;background:linear-gradient(135deg,var(--text-secondary) 0%,var(--accent-light) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem}.empty-subtext{font-size:.875rem;color:var(--text-muted)}.footer{margin-top:2rem;text-align:center}.task-count{font-size:.875rem;color:var(--text-muted);padding:.5rem 1rem;background:linear-gradient(135deg,#a855f714,#6366f10d);border-radius:20px;border:1px solid rgba(168,85,247,.1);display:inline-block}@media (max-width: 480px){.app{padding:2rem 1rem}.title{font-size:2rem}.todo-item{padding:.875rem 1rem}.delete-button{opacity:.6}}.checkbox:focus-visible .checkbox-inner,.delete-button:focus-visible,.add-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 20px var(--accent-glow)}::selection{background:var(--accent);color:#fff}@keyframes pulseGlow{0%,to{box-shadow:0 0 20px #a855f733}50%{box-shadow:0 0 30px #a855f766}}.add-button:active{animation:pulseGlow .3s ease}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--accent) 0%,var(--gradient-end) 100%);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--accent-light)}*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #09090b;--bg-secondary: #0f0f12;--bg-tertiary: #16161a;--bg-hover: #1c1c21;--bg-elevated: #1a1a1f;--text-primary: #f4f4f5;--text-secondary: #a1a1aa;--text-muted: #6b6b76;--accent: #a855f7;--accent-light: #c084fc;--accent-dark: #7c3aed;--accent-glow: rgba(168, 85, 247, .2);--accent-glow-strong: rgba(168, 85, 247, .35);--gradient-start: #a855f7;--gradient-end: #6366f1;--success: #a855f7;--success-glow: rgba(168, 85, 247, .25);--danger: #f43f5e;--border: #1f1f24;--border-hover: #2d2d35;--border-accent: rgba(168, 85, 247, .3)}html{font-size:16px}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}