:root {
        --bg-color: #F5F5F5;
        --highlight-color: #ffbd30;
        --text-color: #000000;
        --active-bg-color: #80d0c7;
        --border-color: #e0e0e0;
        --card-bg: #FFFFFF;
    }

    #altairplans {
        padding: 70px 0;
        background-color: var(--bg-color);
        font-family: 'Poppins', sans-serif;
    }

    #altairplans .container {
        max-width: 1200px;
        margin: auto;
        padding: 0 1rem;
    }

    .text-black { color: var(--text-color); }

    .heading-highlight {
        color: var(--highlight-color);
    }

    /* New Selection Buttons Design */
    .selection-wrapper {
        display: flex;
        justify-content: center;
        margin-bottom: 2rem;
    }

    .selection-container {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        background-color: var(--card-bg);
        padding: 12px;
        border-radius: 15px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    }

    .selection-button {
        flex-grow: 1;
        min-width: 100px; /* To prevent squishing on small screens */
        padding: 10px 20px;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-color);
        background-color: transparent;
        border: none;
        border-radius: 10px;
        cursor: pointer;
        transition: all 0.3s ease;
    }
    
    .selection-button.active {
        background-color: var(--active-bg-color);
        color: #fff;
    }

    /* Content wrapper */
    .pricing-content-wrapper {
        margin-top: 2rem;
    }

    /* Plans */
    .plan-category {
        display: none;
    }

    .plan-category.active {
        display: block;
        animation: fadeIn 0.5s ease-in-out;
    }

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

    .grid-container {
        display: grid;
        gap: 1.5rem;
    }

    .pricing-entry {
        background-color: var(--card-bg);
        border: 1px solid var(--border-color);
        padding: 2rem;
        border-radius: 1rem;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
        display: flex;
        flex-direction: column;
        text-align: left;
        transition: transform 0.3s, box-shadow 0.3s;
        color: var(--text-color);
    }

    .pricing-entry:hover {
        transform: translateY(-6px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    }

    .pricing-entry h3 {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--text-color);
    }

    .price {
        font-size: 2.2rem;
        font-weight: 800;
        color: var(--active-bg-color);
    }
    
    .btn-whatsapp {
        background-color: var(--highlight-color);
        color: #fff;
        font-weight: 600;
        padding: 0.9rem 1.5rem;
        border-radius: 0.6rem;
        text-decoration: none;
        transition: 0.3s;
        text-align: center;
        margin-top: auto;
    }

    .btn-whatsapp:hover {
        background-color: #e6a72c; /* slightly darker shade */
        transform: scale(1.03);
    }

    /* Responsive */
    @media (min-width: 768px) {
        .grid-container {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (min-width: 1024px) {
        .grid-container {
            grid-template-columns: repeat(3, 1fr);
        }
    }

    @media (max-width: 767px) {
        .pricing-entry {
            padding: 1.5rem;
        }

        .pricing-entry h3 {
            font-size: 1.3rem;
        }

        .price {
            font-size: 1.8rem;
        }
        
        .selection-container {
            flex-direction: column;
            width: 100%;
        }
        
        .selection-button {
            width: 100%;
        }
    }