/* ========== 外部リンクカード ========== */
:root{
    --ext-bg: #fff;
    --ext-border: #e5e7eb;
    --ext-text: #111827;
    --ext-muted: #6b7280;
    --ext-hover: #2563eb20;
    --ext-ring: #2563eb;
}

@media (prefers-color-scheme: dark){
    :root{
        --ext-bg: #0b0f14;
        --ext-border: #1f2937;
        --ext-text: #e5e7eb;
        --ext-muted: #9ca3af;
        --ext-hover: #60a5fa20;
        --ext-ring: #60a5fa;
    }
}

.ext-card{
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 16px;
    align-items: stretch;
    text-decoration: none;
    background: var(--ext-bg);
    color: var(--ext-text);
    border: 1px solid var(--ext-border);
    border-radius: 14px;
    transition: box-shadow .18s ease, transform .18s ease, border-color .18s ease, background .18s ease;
}

.ext-card:hover{
    border-color: var(--ext-ring);
    box-shadow: 0 8px 24px rgba(0,0,0,.08);
    transform: translateY(-1px);
    background: color-mix(in oklab, var(--ext-bg), var(--ext-hover));
}

.ext-card:focus-visible{
    outline: 3px solid var(--ext-ring);
    outline-offset: 2px;
}

.ext-card__thumb{
    background: #f3f4f6;
    position: relative;
    min-height: 120px;
    border-radius: 14px 0 0 14px;
    overflow: hidden;
}

.ext-card__thumb img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.ext-card__body{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    /*grid-template-rows: auto auto 1fr;*/
    padding: 14px 14px 14px 0;
    gap: 8px;
    position: relative;
}
.ext-card-comment{
    position: absolute;
    top: 0;
    left: .3em;
    display: inline-block;
    max-width: 100%;
    font-size: .68em;
    transform: translateY(-50%);
    background: navy;
    color: #fff;
    padding: .2em .6em;
}

.ext-card__title{
    font-size: clamp(16px, 1.6vw, 18px);
    line-height: 1.35;
    margin: 0;
    font-weight: 700;
}

.ext-card__desc{
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    color: var(--ext-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2; /* 説明文は2行でトリミング */
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ext-card__meta{
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
    font-size: 13px;
    color: var(--ext-muted);
}

.ext-card__domain{
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

/* 外部リンクアイコンを入れる場合（任意） */
.ext-card__external{
    width: 16px;
    height: 16px;
    margin-left: auto;
    fill: currentColor;
    opacity: .7;
    transition: transform .18s ease;
}
.ext-card:hover .ext-card__external{
    transform: translate(1px, -1px);
}

/* レスポンシブ（幅が狭い時は縦積み） */
@media (max-width: 640px){
    .ext-card{
        grid-template-columns: 1fr;
    }
    .ext-card__body{
        padding: 12px;
    }
}

/* 省スペース版（必要なら ext-card--compact を足す） */
.ext-card--compact{
    grid-template-columns: 120px 1fr;
}
.ext-card--compact .ext-card__desc{
    -webkit-line-clamp: 1;
}

/* エディタ／本文の周囲調整（任意） */
.wp-block-shortcode .ext-card,
.wp-block-html .ext-card{
    margin: 12px 0;
}