body{margin:0;padding:0;background-color:#f5f7fa;font-family:Segoe UI,Roboto,sans-serif;color:#333}.app-container{max-width:800px;margin:2rem auto;background:#fff;padding:2rem;border-radius:8px;box-shadow:0 4px 12px #0000000d}h2,h3{margin-top:0}input,textarea{width:100%;padding:.75rem;border:1px solid #ccc;border-radius:4px;font-size:14px;transition:border-color .2s;box-sizing:border-box}input:focus,textarea:focus{border-color:#3498db;outline:none}.form-buttons{margin-top:10px}button{padding:.5rem 1.25rem;margin-right:8px;border:none;background-color:#3498db;color:#fff;font-size:14px;border-radius:4px;cursor:pointer;transition:background-color .2s}button:hover:not(:disabled){background-color:#2980b9}button:disabled{opacity:.6;cursor:not-allowed}button.cancel{background-color:#aaa}button.cancel:hover{background-color:#888}ul{list-style:none;padding:0}li{padding:1rem 0;border-bottom:1px solid #e0e0e0;display:flex;justify-content:space-between;align-items:center}.item-content a{color:#3498db;text-decoration:none;font-weight:700}.item-content a:hover{text-decoration:underline}.item-actions button{margin-left:4px}.loader{border:4px solid #f3f3f3;border-top:4px solid #3498db;border-radius:50%;width:30px;height:30px;animation:spin 1s linear infinite;margin:10px auto}@keyframes spin{to{transform:rotate(360deg)}}