.app{min-height:100vh;padding:20px}.container{max-width:800px;margin:0 auto}header{text-align:center;margin-bottom:30px}header h1{color:#2c3e50;font-size:2.5rem;font-weight:600}.search-section{margin-bottom:20px}.search-input{width:100%;padding:12px 16px;font-size:16px;border:2px solid #ddd;border-radius:8px;transition:border-color .3s}.search-input:focus{outline:none;border-color:#3498db}.add-contact-section{margin-bottom:30px}.add-button{background-color:#3498db;color:#fff;border:none;padding:12px 24px;font-size:16px;border-radius:8px;cursor:pointer;transition:background-color .3s}.add-button:hover{background-color:#2980b9}.add-form{margin-top:15px;padding:20px;background-color:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a}.add-form input{width:100%;padding:10px 12px;margin-bottom:12px;font-size:14px;border:1px solid #ddd;border-radius:6px}.add-form input:focus{outline:none;border-color:#3498db}.submit-button{background-color:#27ae60;color:#fff;border:none;padding:10px 20px;font-size:16px;border-radius:6px;cursor:pointer;width:100%;transition:background-color .3s}.submit-button:hover{background-color:#229954}.contacts-section{margin-top:20px}.contacts-list{display:flex;flex-direction:column;gap:15px}.contact-card{background-color:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 4px #0000001a;transition:box-shadow .3s}.contact-card:hover{box-shadow:0 4px 8px #00000026}.contact-name{font-size:1.3rem;font-weight:600;color:#2c3e50;margin-bottom:10px}.contact-info{font-size:14px;color:#555;margin-bottom:6px}.contact-label{font-weight:500;color:#7f8c8d}.no-results{text-align:center;padding:40px;color:#7f8c8d;font-size:16px;background-color:#fff;border-radius:8px}@media (max-width: 600px){header h1{font-size:2rem}.app{padding:15px}}*{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-color:#f5f5f5;color:#333}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}