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


main {
    flex: 1;
}

.container-1 {
    display: flex;
    justify-content: center;
    padding: 20px;
}

.card {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 450px;
    text-align: center;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.15);
}

.main-heading {
    font-size: 1.8rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 20px;
}

.bpm-input, .rhythm-select {
    width: 100%;
    padding: 12px;
    background-color: #f9fafb;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    color: #2c3e50;
    outline: none;
    transition: border-color 0.2s ease;
    box-sizing: border-box;
    margin-top: 10px;
    text-align: center;
}

.bpm-input:focus, .rhythm-select:focus {
    border-color: #011f6c;
}

.action-btn {
    background-color: #011f6c;
    color: #ffffff;
    padding: 12px;
    border: none;
    border-radius: 8px;
    width: 100%;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.action-btn:hover {
    background-color: rgb(0, 94, 194);
}

@media (max-width: 480px) {
    .card {
        padding: 20px;
    }

    .main-heading {
        font-size: 1.5rem;
    }

    .bpm-input, .rhythm-select {
        padding: 10px;
    }

    .action-btn {
        padding: 10px;
        font-size: 0.95rem;
    }
}