:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.5;font-weight:400;color:#213547;background:linear-gradient(135deg,#f5f7fa,#c3cfe2);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(135deg,#f5f7fa,#c3cfe2)}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;cursor:pointer;transition:all .2s ease}button:focus,button:focus-visible{outline:2px solid #667eea;outline-offset:2px}.todo-item{display:flex;align-items:center;gap:.75rem;padding:1rem;background:#f9fafb;border:1px solid #e5e7eb;border-radius:8px;margin-bottom:.5rem;transition:all .2s ease;position:relative;overflow:hidden}.todo-item:hover{background:#f3f4f6;border-color:#d1d5db;transform:translateY(-1px);box-shadow:0 2px 4px #0000000d}.todo-item:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(135deg,#667eea,#764ba2);transform:scaleY(0);transition:transform .2s ease}.todo-item:hover:before{transform:scaleY(1)}.todo-checkbox{width:1.25rem;height:1.25rem;accent-color:#667eea;cursor:pointer;flex-shrink:0}.todo-item span{flex:1;font-size:1rem;color:#1f2937;transition:all .2s ease;word-break:break-word}.todo-item span.completed{text-decoration:line-through;color:#9ca3af;opacity:.7}.delete-button{padding:.5rem .75rem;background:#ef4444;color:#fff;border:none;border-radius:6px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s ease;opacity:0;transform:translate(10px);flex-shrink:0}.todo-item:hover .delete-button{opacity:1;transform:translate(0)}.delete-button:hover{background:#dc2626;transform:scale(1.05)}.delete-button:active{transform:scale(.95)}@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.todo-item{animation:slideIn .3s ease-out}@media(max-width:640px){.todo-item{padding:.75rem;gap:.5rem}.todo-item span{font-size:.9rem}.delete-button{padding:.4rem .6rem;font-size:.8rem}}.todo-list{max-width:600px;margin:2rem auto;padding:2rem;background:linear-gradient(135deg,#667eea,#764ba2,#f093fb,#f5576c,#4facfe);border-radius:16px;box-shadow:0 8px 32px #667eea4d,0 4px 16px #f5576c33;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;position:relative}.todo-list:before{content:"";position:absolute;inset:0;background:#fffffff2;border-radius:16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:1}.todo-list>*{position:relative;z-index:2}.todo-list h1{text-align:center;color:#1f2937;font-size:2.5rem;font-weight:700;margin-bottom:2rem;background:linear-gradient(135deg,#ff6b6b,#4ecdc4,#45b7d1,#96ceb4,#ffeaa7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-shadow:0 2px 4px rgba(0,0,0,.1)}.input-section{display:flex;gap:.75rem;margin-bottom:2rem}.todo-input{flex:1;padding:.75rem 1rem;border:2px solid rgba(255,255,255,.3);border-radius:10px;font-size:1rem;transition:all .3s ease;background:#ffffffe6;color:#1f2937;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.todo-input:focus{outline:none;border-color:#4ecdc4;background:#fffffff2;box-shadow:0 0 0 3px #4ecdc433;transform:scale(1.01)}.todo-input::placeholder{color:#6b7280}.add-button{padding:.75rem 1.5rem;background:linear-gradient(135deg,#ff6b6b,#4ecdc4,#45b7d1);color:#fff;border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #ff6b6b66;position:relative;overflow:hidden}.add-button: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}.add-button:hover:before{left:100%}.add-button:hover{transform:translateY(-2px) scale(1.02);box-shadow:0 6px 20px #ff6b6b99}.add-button:active{transform:translateY(0) scale(1)}.todo-items{list-style:none;padding:0;margin:0}.todo-items li{margin-bottom:.5rem;transition:all .3s ease;border-radius:12px;overflow:hidden;background:linear-gradient(135deg,#ffffffe6,#ffffffb3);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);border:1px solid rgba(255,255,255,.2);box-shadow:0 2px 8px #0000001a}.todo-items li:nth-child(odd){background:linear-gradient(135deg,#ffb6c11a,#ffdab91a)}.todo-items li:nth-child(2n){background:linear-gradient(135deg,#add8e61a,#dda0dd1a)}.drag-handle{cursor:grab;-webkit-user-select:none;user-select:none;color:#ff6b6b;font-size:1.2rem;line-height:1;transition:all .3s ease;text-shadow:0 1px 2px rgba(0,0,0,.1)}.drag-handle:hover{color:#4ecdc4;transform:scale(1.1)}.drag-handle:active{cursor:grabbing;color:#45b7d1}.todo-items li:last-child{margin-bottom:0}.todo-items li:hover{transform:translateY(-2px) scale(1.01);box-shadow:0 8px 25px #00000026;background:linear-gradient(135deg,#fffffff2,#ffffffd9)}.todo-items li:active{cursor:grabbing;transform:scale(.98)}.todo-items li[aria-pressed=true]{z-index:1000;box-shadow:0 12px 40px #ff6b6b66,0 8px 25px #0003;transform:rotate(3deg) scale(1.02);background:linear-gradient(135deg,#ff6b6b33,#4ecdc433)}.todo-items:empty:before{content:"No todos yet. Add one above!";display:block;text-align:center;color:#9ca3af;font-style:italic;padding:2rem}@media(max-width:640px){.todo-list{margin:1rem;padding:1.5rem}.todo-list h1{font-size:2rem}.input-section{flex-direction:column}.add-button{width:100%}}