body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #e8f0ff, #ffffff);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    background: #ffffff;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
    text-align: center;
}

h1 {
    font-size: 2.2em;
    margin-bottom: 20px;
    color: #2c3e50;
    text-transform: uppercase;
    letter-spacing: 2px;
}

button {
    background: linear-gradient(135deg, #4CAF50, #2ecc71);
    border: none;
    color: white;
    padding: 14px 28px;
    font-size: 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-bottom: 20px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.lista {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lista li {
    background: #f8f9fb;
    margin-bottom: 12px;
    padding: 15px 20px;
    border-radius: 8px;
    font-size: 15px;
    color: #34495e;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}