/* Card style */
.ff-card {
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    padding: 16px;
    transition: 0.2s ease;
    cursor: pointer;
}

.ff-card:hover {
    border-color: #22c55e;
}

.ff-card.selected {
    border-color: #22c55e;
    background: #f0fdf4;
}

/* Checkbox & radio hide */
.ff-card input {
    display: none;
}

/* Sticky summary */
.ff-summary {
    position: sticky;
    top: 100px;
    background: #ffffff;
    border-radius: 14px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

/* Buttons */
.ff-button {
    background: #22c55e;
    color: #fff;
    padding: 14px;
    border-radius: 999px;
    text-align: center;
    font-weight: 600;
}