*{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}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:2rem;text-align:center;box-shadow:0 2px 10px #0000001a}.app-header h1{font-size:2.5rem;margin-bottom:.5rem}.app-header p{opacity:.9;font-size:1.1rem}.app-main{flex:1;max-width:1200px;width:100%;margin:0 auto;padding:2rem}.controls{margin-bottom:2rem;text-align:center}.btn-primary{background:#667eea;color:#fff;border:none;padding:.75rem 1.5rem;font-size:1rem;border-radius:8px;cursor:pointer;transition:all .3s ease;font-weight:600}.btn-primary:hover:not(:disabled){background:#5568d3;transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.btn-primary:disabled{background:#ccc;cursor:not-allowed;opacity:.6}.form-container{background:#fff;padding:2rem;border-radius:12px;box-shadow:0 2px 8px #0000001a;margin-bottom:2rem}.form-container h2{margin-bottom:1.5rem;color:#333}.contact-form{display:flex;flex-direction:column;gap:1rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-weight:600;color:#555;font-size:.9rem}.form-group input,.form-group textarea{padding:.75rem;border:2px solid #e0e0e0;border-radius:6px;font-size:1rem;transition:border-color .3s ease;font-family:inherit}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#667eea}.form-group textarea{resize:vertical;min-height:80px}.form-actions{display:flex;gap:1rem;margin-top:1rem}.form-actions button{flex:1;padding:.75rem;border:none;border-radius:6px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.btn-secondary{background:#e0e0e0;color:#333}.btn-secondary:hover{background:#d0d0d0}.error-message{background:#fee;color:#c33;padding:1rem;border-radius:6px;margin-bottom:1rem;border-left:4px solid #c33}.error-banner{background:#fee;color:#c33;padding:1rem;border-radius:8px;margin-bottom:1.5rem;border-left:4px solid #c33;display:flex;justify-content:space-between;align-items:center}.error-banner button{background:#c33;color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer;font-weight:600}.error-banner button:hover{background:#a00}.contacts-section{margin-top:2rem}.contacts-section h2{margin-bottom:1rem;color:#333;font-size:1.5rem}.contact-list{display:grid;gap:1rem}.contact-card{background:#fff;padding:1.5rem;border-radius:10px;box-shadow:0 2px 6px #00000014;display:flex;justify-content:space-between;align-items:flex-start;transition:transform .2s ease,box-shadow .2s ease}.contact-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001f}.contact-info h3{color:#333;margin-bottom:.5rem;font-size:1.2rem}.contact-info .phone{color:#667eea;font-weight:600;font-size:1.1rem;margin-bottom:.25rem}.contact-info .email{color:#666;margin-bottom:.25rem}.contact-info .address{color:#888;font-style:italic;margin-bottom:.5rem}.contact-info .date{color:#999;font-size:.8rem}.contact-actions{display:flex;gap:.5rem}.btn-edit,.btn-delete{padding:.5rem 1rem;border:none;border-radius:6px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-edit{background:#667eea;color:#fff}.btn-edit:hover{background:#5568d3}.btn-delete{background:#e74c3c;color:#fff}.btn-delete:hover{background:#c0392b}.loading,.empty-state{text-align:center;padding:3rem;color:#666;font-size:1.1rem;background:#fff;border-radius:10px;box-shadow:0 2px 6px #00000014}.app-footer{background:#333;color:#fff;text-align:center;padding:1.5rem;margin-top:auto}@media (max-width: 768px){.app-main{padding:1rem}.app-header h1{font-size:2rem}.contact-card{flex-direction:column;gap:1rem}.contact-actions{width:100%;justify-content:flex-end}.form-actions{flex-direction:column}}