:root {
    --card-bg: #ffffff;
    --card-radius: 12px;
    --card-shadow: rgba(0,0,0,0.1);
    --card-hover-shadow: rgba(0,0,0,0.2);
}

/* Container stays the same */
.buy-btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

/* Card wrapper */
.package-card {
    cursor: pointer;
    width: 200px;
    border-radius: var(--card-radius);
    background: var(--card-bg);
    box-shadow: 0 2px 6px var(--card-shadow);
    overflow: hidden;
    transition: transform .2s ease, box-shadow .2s ease;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    text-align: center;
}

    .package-card:hover {
        transform: translateY(-4px) scale(1.03);
        box-shadow: 0 6px 14px var(--card-hover-shadow);
    }

    /* Selected state */
    .package-card.selected {
        border-image: linear-gradient( 45deg, var(--accent-color), color-mix(in srgb, var(--accent-color) 60%, white) ) 1;
        box-shadow: 0 8px 20px var(--card-hover-shadow);
        transform: scale(1.07);
    }

/* Image area */
.package-image {
    flex: 1 1 auto;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    padding-top: 100%;
}

/* Text body */
.package-body {
    padding: .75rem;
    border-top: 1px solid #eee;
}

.package-title {
    margin: 0 .25rem .5rem;
    font-size: 1rem;
    font-weight: 550;
    color: #333;
}

.package-details {
    display: flex;
    justify-content: center;
    gap: .25rem;
    font-size: .9rem;
    color: #666;
}

.package-amount {
    font-weight: 700;
    color: #222;
}

.package-unit {
    font-size: .8rem;
}

.package-cost {
    margin-top: .5rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-color);
}

/* BUY CREDIT SUBMIT button styling – unchanged */
.buy-credits-btn {
    display: inline-block;
    padding: 12px 25px;
    font-size: 1.2rem;
    border-radius: 6px;
    transition: transform .2s ease, box-shadow .2s ease;
    background-color: var(--accent-color);
    border: none;
    color: #fff;
    cursor: pointer;
}

    .buy-credits-btn:hover {
        transform: scale(1.05);
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }

/* Form spacing */
#creditsForm {
    margin-top: 30px;
    text-align: center;
}