/**
 * Related Tools Grid Component
 *
 * 関連ツールセクションのグリッドレイアウト
 * 71ページ（91%）で使用される高頻度パターン
 */

/* ========================================
   Grid Container
   ======================================== */
.related-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

/* ========================================
   Tool Card
   ======================================== */
.related-tool-card {
    padding: 16px;
    background: var(--color-white, #ffffff);
    border: 1px solid var(--gray-200, #e5e7eb);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.related-tool-card:hover {
    border-color: var(--primary-color, #1988FF);
    box-shadow: 0 2px 8px rgba(25, 136, 255, 0.1);
    transform: translateY(-2px);
}

/* ========================================
   Tool Title & Link
   ======================================== */
.related-tool-card .tool-title {
    font-size: 1em;
    margin: 0 0 8px 0;
    font-weight: 600;
    color: var(--gray-900, #111827);
}

.related-tool-card .tool-link {
    color: var(--primary-color, #1988FF);
    text-decoration: none;
    transition: color 0.2s ease;
}

.related-tool-card .tool-link:hover {
    color: var(--primary-dark, #0066cc);
    text-decoration: underline;
}

.related-tool-card .tool-link:focus {
    outline: 2px solid var(--primary-color, #1988FF);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ========================================
   Tool Description
   ======================================== */
.related-tool-card .tool-description {
    font-size: 0.9em;
    color: var(--gray-600, #4b5563);
    margin: 0;
    line-height: 1.5;
}

/* ========================================
   Responsive Design
   ======================================== */

/* Mobile: 1 column */
@media (max-width: 640px) {
    .related-tools-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .related-tool-card {
        padding: 12px;
    }
}

/* Tablet: 2 columns */
@media (min-width: 641px) and (max-width: 1024px) {
    .related-tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop: 3 columns */
@media (min-width: 1025px) {
    .related-tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========================================
   Accessibility
   ======================================== */

/* タッチターゲットサイズ（最小44x44px） */
@media (hover: none) and (pointer: coarse) {
    .related-tool-card .tool-link {
        display: inline-block;
        min-height: 44px;
        line-height: 44px;
    }
}

/* Reduced Motion対応 */
@media (prefers-reduced-motion: reduce) {
    .related-tool-card {
        transition: none;
    }

    .related-tool-card:hover {
        transform: none;
    }
}

/* High Contrast Mode対応 */
@media (prefers-contrast: high) {
    .related-tool-card {
        border-width: 2px;
    }

    .related-tool-card:hover {
        border-width: 3px;
    }
}

/* Dark Mode対応: 無効化（ダークモードでも白背景維持） */