:root {
    --fgc-border-color: #ddd;
    --fgc-border-radius: 12px;
    --fgc-card-border-color: #ddd;
    --fgc-card-border-color-selected: #111;
    --fgc-card-bg-selected: #f7f7f7;
    --fgc-no-card-bg: #f2f2f2;
    --fgc-focus-color: Highlight;
    --fgc-transition-duration: 0.2s;
    --fgc-columns: 3;
}

@media (prefers-color-scheme: dark) {
    :root {
        --fgc-border-color: #444;
        --fgc-card-border-color: #555;
        --fgc-card-border-color-selected: #fff;
        --fgc-card-bg-selected: #333;
        --fgc-no-card-bg: #333;
    }
}

@media (prefers-reduced-motion: reduce) {
    :root {
        --fgc-transition-duration: 0s;
    }
}

.fgc-box {
    margin: 24px 0;
    padding: 20px;
    border: 1px solid var(--fgc-border-color, #ddd);
    border-radius: var(--fgc-border-radius, 12px);
}

.fgc-toggle {
    cursor: pointer;
}

.fgc-toggle:focus-visible {
    outline: 2px solid var(--fgc-focus-color, Highlight);
    outline-offset: 2px;
}

.fgc-options {
    margin-top: 18px;
}

.fgc-grid {
    display: grid;
    grid-template-columns: repeat(var(--fgc-columns, 3), minmax(0, 1fr));
    gap: 14px;
}

.fgc-card-option {
    display: block;
    cursor: pointer;
    text-align: center;
}

.fgc-card-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.fgc-card-visual {
    display: block;
    border: 2px solid var(--fgc-card-border-color, #ddd);
    border-radius: var(--fgc-border-radius, 12px);
    padding: 10px;
    transition: border-color var(--fgc-transition-duration, 0.2s) ease, background var(--fgc-transition-duration, 0.2s) ease;
}

.fgc-card-option input[type="radio"]:checked + .fgc-card-visual {
    border-color: var(--fgc-card-border-color-selected, #111);
    background: var(--fgc-card-bg-selected, #f7f7f7);
}

.fgc-card-option input[type="radio"]:focus-visible + .fgc-card-visual {
    outline: 2px solid var(--fgc-focus-color, Highlight);
    outline-offset: 2px;
}

.fgc-card-visual img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 8px;
}

.fgc-card-visual strong {
    display: block;
    font-size: 14px;
}

.fgc-price {
    display: block;
    font-size: 13px;
    margin-top: 4px;
    color: inherit;
}

.fgc-no-card-image {
    height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--fgc-no-card-bg, #f2f2f2);
    border-radius: 8px;
    margin-bottom: 8px;
}

.fgc-text-wrap {
    margin-top: 18px;
}

.fgc-text-wrap textarea {
    width: 100%;
    margin-top: 8px;
}

.fgc-text-limit {
    margin-top: 6px;
    font-size: 13px;
}

@media (max-width: 640px) {
    .fgc-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 420px) {
    .fgc-grid {
        grid-template-columns: 1fr;
    }
}