.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:2rem;color:#333}.header{text-align:center;margin-bottom:3rem;color:#fff}.header h1{font-size:2.5rem;margin-bottom:.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.header p{font-size:1.1rem;opacity:.9}.main-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;width:100%;max-width:1200px;margin-bottom:2rem}.card{background:#fff;border-radius:12px;padding:2rem;box-shadow:0 10px 30px #0003;transition:transform .3s ease,box-shadow .3s ease}.card:hover{transform:translateY(-5px);box-shadow:0 15px 40px #0000004d}.card h2{margin-bottom:1.5rem;color:#667eea;font-size:1.5rem}.counter-section{display:flex;gap:1rem;flex-wrap:wrap}.btn{padding:.75rem 1.5rem;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;font-family:inherit}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover{transform:scale(1.05);box-shadow:0 5px 15px #667eea66}.btn-secondary{background:#e0e0e0;color:#333}.btn-secondary:hover{background:#d0d0d0;transform:scale(1.05)}.btn-danger{background:#ff6b6b;color:#fff}.btn-danger:hover{background:#ff5252;transform:scale(1.05)}.btn-small{padding:.4rem .8rem;font-size:.85rem}.todo-section{display:flex;flex-direction:column;gap:1rem}.input-group{display:flex;gap:.5rem}.input{flex:1;padding:.75rem;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;font-family:inherit;transition:border-color .3s ease}.input:focus{outline:none;border-color:#667eea}.todo-list{list-style:none;display:flex;flex-direction:column;gap:.5rem}.todo-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem;background:#f5f5f5;border-radius:8px;transition:background .3s ease}.todo-item:hover{background:#eee}.todo-item.empty{justify-content:center;color:#999;font-style:italic}.todo-item span{flex:1}.info-section{display:flex;flex-direction:column;gap:.75rem}.info-section p{padding:.5rem 0;border-bottom:1px solid #e0e0e0}.info-section p:last-child{border-bottom:none}.info-section strong{color:#667eea}.footer{text-align:center;color:#fff;opacity:.8;margin-top:auto;padding-top:2rem}@media (max-width: 768px){.main-content{grid-template-columns:1fr}.header h1{font-size:2rem}.app{padding:1rem}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}