body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f0f4f8;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px;
    color: #333;
}

h1 {
    color: #2c3e50;
    margin-bottom: 20px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

form {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

form input[type="text"] {
    padding: 10px;
    width: 250px;
    border: 2px solid #3498db;
    border-radius: 5px;
    outline: none;
    transition: border-color 0.3s;
}

form input[type="text"]:focus {
    border-color: #2980b9;
}

form button {
    padding: 10px 20px;
    background: #3498db;
    border: none;
    color: white;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
}

form button:hover {
    background: #2980b9;
    transform: scale(1.05);
}

ul {
    list-style: none;
    padding: 0;
    width: 400px;
}

li {
    background: white;
    padding: 12px 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    box-shadow: 0 3px 6px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform 0.2s, box-shadow 0.2s;
}
a {
    color: white;
    background: #e74c3c;
    padding: 5px 10px;
    text-decoration: none;
    border-radius: 5px;
    font-size: 0.9em;
    transition: background 0.3s, transform 0.2s;
}

a:hover {
    background: #c0392b;
    transform: scale(1.1);
}