:root{--bg-color: #f0fdf4;--card-bg: rgba(255, 255, 255, .7);--card-border: rgba(74, 222, 128, .2);--primary-gradient: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);--text-primary: #14532d;--text-secondary: #166534;--success: #15803d;--danger: #ef4444;--font-family: "Inter", system-ui, -apple-system, sans-serif}body{margin:0;font-family:var(--font-family);background-color:var(--bg-color);background-image:radial-gradient(circle at 50% 0%,rgba(187,247,208,.5),transparent 70%);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;justify-content:center}#root{width:100%;max-width:600px;padding:20px;box-sizing:border-box}.glass-panel{background:var(--card-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--card-border);border-radius:16px;box-shadow:0 4px 30px #0000001a}h1{font-size:2rem;font-weight:700;margin-bottom:.5rem;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-align:center}h2{font-size:1.25rem;color:var(--text-primary);margin-bottom:1rem}input[type=text]{width:100%;padding:12px 16px;background:#fffc;border:1px solid var(--card-border);border-radius:12px;color:var(--text-primary);font-size:1rem;outline:none;transition:border-color .3s ease;box-sizing:border-box}input[type=text]:focus{border-color:#818cf8}button.primary-btn{background:var(--primary-gradient);border:none;color:#fff;padding:12px 24px;border-radius:12px;font-weight:600;cursor:pointer;transition:transform .2s ease,opacity .2s ease;display:flex;align-items:center;justify-content:center;gap:8px}button.primary-btn:active{transform:scale(.98)}button.icon-btn{background:transparent;border:none;color:var(--text-secondary);cursor:pointer;padding:8px;border-radius:50%;transition:color .2s ease,background .2s ease;display:flex;align-items:center;justify-content:center}button.icon-btn:hover{background:#0000000d;color:var(--text-primary)}button.icon-btn.delete:hover{color:var(--danger);background:#ef44441a}.task-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}.task-item{display:flex;align-items:center;justify-content:space-between;padding:16px;transition:all .3s ease}.task-content{display:flex;align-items:center;gap:12px;flex:1}.checkbox{width:24px;height:24px;border-radius:50%;border:2px solid var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;flex-shrink:0}.checkbox.checked{background:var(--success);border-color:var(--success)}.task-text{font-size:1rem;transition:color .2s ease}.task-text.completed{color:var(--text-secondary);text-decoration:line-through}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .4s ease-out forwards}