/* ============================================================
   Article inline content cards (HTML + CSS)

   Phase 5.51 (2026-05-11): 「表もどき SVG」を CSS で再実装。
   SVG はインタラクティブ可視化 / 真の図 (ツリー / バイト構造 / 矢印付き
   フロー) に限定し、N 列比較 / 縦列ステップ / カード列のような「情報構造」
   は HTML + CSS で書く。レスポンシブと可読性で SVG より勝る。

   コンポーネント:
   - .article-card     ... 共通の枠 (タイトル + サブタイトル付き)
   - .compare-grid     ... N 列比較 (ghidra / asm / deauth 等)
   - .step-flow        ... 縦に並ぶステップ (firewall 5 世代等)
   - .scenario-grid    ... 2x2 等のグリッド (deauth 4 シナリオ等)

   全てダークテーマ + JetBrains Mono を継承して既存 SVG と統一感を保つ。
   ============================================================ */

.article-card {
    margin: 1.5rem auto;
    background: linear-gradient(180deg, rgba(0,30,15,0.55) 0%, rgba(0,15,8,0.85) 100%);
    border: 1px solid rgba(0,255,65,0.22);
    border-radius: 8px;
    padding: 1rem 1.25rem 1.25rem;
    box-shadow: 0 0 24px rgba(0,255,65,0.05) inset;
}
.article-card-title {
    color: #00ff41;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.05rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: 0.04em;
    margin: 0 0 0.35rem;
}
.article-card-subtitle {
    color: #cfeacf;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    text-align: center;
    margin: 0 0 1rem;
}
.article-card-caption {
    color: #b8d4b8;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    text-align: center;
    margin: 1rem 0 0;
    line-height: 1.5;
}

/* --- 比較グリッド (2-4 列の対比) --- */
.compare-grid {
    display: grid;
    gap: 0.75rem;
}
.compare-grid--2col { grid-template-columns: repeat(2, 1fr); }
.compare-grid--3col { grid-template-columns: repeat(3, 1fr); }
.compare-grid--4col { grid-template-columns: repeat(4, 1fr); }

.compare-col {
    background: rgba(0,255,65,0.07);
    border: 1px solid rgba(0,255,65,0.35);
    border-radius: 6px;
    padding: 0.75rem 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    transition: background 0.2s ease;
}
.compare-col:hover { background: rgba(0,255,65,0.13); }

.compare-col-title {
    color: #00ff41;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    font-weight: 700;
    margin: 0;
    text-align: center;
}
.compare-col-sub {
    color: #cfeacf;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    text-align: center;
    margin: 0 0 0.4rem;
    line-height: 1.4;
}
.compare-row {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}
.compare-label {
    color: #88c2ff;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.03em;
}
.compare-value {
    color: #d8e0e8;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.4;
}
.compare-value strong {
    color: #ffd980;
    font-weight: 600;
}

/* --- ステップフロー (縦に並ぶ段階) --- */
.step-flow {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.step-flow-item {
    background: rgba(0,255,65,0.10);
    border: 1px solid rgba(0,255,65,0.55);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    transition: background 0.2s ease;
}
.step-flow-item:hover { background: rgba(0,255,65,0.18); }
.step-flow-item-title {
    color: #00ff41;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0 0 0.3rem;
    line-height: 1.4;
}
.step-flow-item-detail {
    color: #c8e0c8;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88rem;
    margin: 0 0 0.2rem;
    line-height: 1.5;
}
.step-flow-item-meta {
    color: #b0dabe;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    font-style: italic;
    margin: 0;
    line-height: 1.5;
}
.step-flow-arrow {
    text-align: center;
    color: #7ab8ff;
    font-size: 1.1rem;
    line-height: 1;
    user-select: none;
}

/* --- シナリオグリッド (2x2 等のラベル+本文ブロック) --- */
.scenario-grid {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(2, 1fr);
}
.scenario-cell {
    background: rgba(0,255,65,0.07);
    border: 1px solid rgba(0,255,65,0.35);
    border-radius: 6px;
    padding: 0.75rem 0.9rem;
    transition: background 0.2s ease;
}
.scenario-cell:hover { background: rgba(0,255,65,0.13); }
.scenario-cell-title {
    color: #00ff41;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0 0 0.4rem;
    line-height: 1.4;
}
.scenario-cell-body {
    color: #c8e0c8;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.55;
    margin: 0;
}
.scenario-cell-body p { margin: 0 0 0.3rem; }
.scenario-cell-body p:last-child { margin: 0; }
.scenario-cell-body .meta {
    color: #b0dabe;
    font-size: 0.8rem;
    font-style: italic;
}

/* --- レスポンシブ (768px 未満) --- */
@media (max-width: 768px) {
    .compare-grid--3col,
    .compare-grid--4col,
    .scenario-grid {
        grid-template-columns: 1fr;
    }
    .compare-grid--2col {
        grid-template-columns: 1fr;
    }
    .article-card { padding: 0.75rem 0.9rem 1rem; }
}