* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background: linear-gradient(135deg, #1e1e2f, #2b2b45);
    gap: 15px;
    padding: 20px;
}

button {
    padding: 15px 25px;
    font-size: 18px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    background: #4f46e5;
    color: white;
    transition: 0.3s ease;
    width: 250px;
    max-width: 90%;
}

button:hover {
    background: #6366f1;
    transform: scale(1.05);
}

@media (max-width: 480px) {
    button {
        font-size: 16px;
        padding: 12px 20px;
        width: 90%;
    }
    body {
        gap: 10px;
    }
}

@media (min-width: 481px) and (max-width: 768px) {
    button {
        width: 70%;
        font-size: 17px;
    }
}

@media (min-width: 769px) and (max-width: 1200px) {
    button {
        width: 300px;
    }
}

@media (min-width: 1201px) {
    button {
        width: 250px;
    }
}