body {
    margin: 0;
    font-family: Arial;
    background: linear-gradient(135deg, #667eea, #764ba2);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    text-align: center;
    animation: fadeIn 1s ease-in-out;
}

input {
    display: block;
    width: 90%;
    margin: 10px auto;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid #ccc;
    transition: 0.3s;
}

input:focus {
    border-color: #667eea;
    box-shadow: 0 0 8px #667eea;
    outline: none;
}

button {
    background: #667eea;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background: #764ba2;
    transform: scale(1.05);
}

#message {
    margin-top: 15px;
    font-weight: bold;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}