@import"https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&display=swap";.app-container{width:100vw;max-width:600px;margin:0 auto}.todo-card{background-color:var(--card-bg);border-radius:16px;box-shadow:0 10px 25px #0000000d,0 20px 48px #0000000d;overflow:hidden;display:flex;flex-direction:column}.header{padding:2rem 2rem 1.5rem;background:linear-gradient(135deg,var(--primary-color),var(--primary-hover));color:#fff;display:flex;justify-content:space-between;align-items:center}.title{font-size:1.75rem;font-weight:700;letter-spacing:-.025em}.task-count{background:#fff3;padding:.25rem .75rem;border-radius:20px;font-size:.875rem;font-weight:500}.input-group{display:flex;padding:1.5rem 2rem;border-bottom:1px solid var(--border-color);gap:1rem}.todo-input{flex:1;border:2px solid var(--border-color);border-radius:8px;padding:.75rem 1rem;font-size:1rem;transition:border-color .2s;font-family:inherit}.todo-input:focus{outline:none;border-color:var(--primary-color)}.add-btn{background-color:var(--success-color);color:#fff;border:none;border-radius:8px;padding:0 1.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:background-color .2s,transform .1s}.add-btn:hover{background-color:#059669}.add-btn:active{transform:scale(.96)}.todo-list{max-height:50vh;overflow-y:auto}.todo-item{display:flex;align-items:center;padding:1.25rem 2rem;border-bottom:1px solid var(--border-color);transition:background-color .2s}.todo-item:hover{background-color:#f9fafb}.todo-item.completed{background-color:#f3f4f6}.todo-item.completed .todo-text{text-decoration:line-through;color:var(--text-light)}.todo-text{flex:1;font-size:1rem;line-height:1.5;word-break:break-word;transition:color .2s}.delete-btn{background:transparent;border:none;color:var(--text-light);cursor:pointer;padding:.5rem;border-radius:4px;transition:color .2s,background-color .2s;display:flex;align-items:center;justify-content:center;opacity:0}.todo-item:hover .delete-btn{opacity:1}.delete-btn:hover{color:var(--danger-color);background-color:#fee2e2}.empty-state{padding:3rem;text-align:center;color:var(--text-light);font-style:italic}.footer{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background-color:#f9fafb;border-top:1px solid var(--border-color);font-size:.875rem;color:var(--text-light)}.clear-btn{background:transparent;border:none;color:var(--text-light);cursor:pointer;font-family:inherit;font-weight:500}.clear-btn:hover{color:var(--danger-color);text-decoration:underline}.checkbox-container{display:block;position:relative;padding-left:35px;margin-bottom:24px;margin-right:15px;cursor:pointer;font-size:22px;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.checkbox-container input{position:absolute;opacity:0;cursor:pointer;height:0;width:0}.checkmark{position:absolute;top:0;left:0;height:24px;width:24px;background-color:#fff;border:2px solid var(--border-color);border-radius:6px;transition:all .2s ease}.checkbox-container:hover input~.checkmark{border-color:var(--primary-color)}.checkbox-container input:checked~.checkmark{background-color:var(--primary-color);border-color:var(--primary-color)}.checkmark:after{content:"";position:absolute;display:none}.checkbox-container input:checked~.checkmark:after{display:block}.checkbox-container .checkmark:after{left:7px;top:3px;width:5px;height:10px;border:solid white;border-width:0 2px 2px 0;-webkit-transform:rotate(45deg);-ms-transform:rotate(45deg);transform:rotate(45deg)}:root{--primary-color: #3b82f6;--primary-hover: #2563eb;--bg-color: #f3f4f6;--card-bg: #ffffff;--text-dark: #1f2937;--text-light: #6b7280;--border-color: #e5e7eb;--danger-color: #ef4444;--success-color: #10b981}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Roboto,sans-serif;background-color:var(--bg-color);color:var(--text-dark);display:flex;justify-content:center;align-items:center;min-height:100vh;padding:3rem 1rem}#root{width:100%;display:flex;justify-content:center;align-items:center}