/* ========================================
   4事業部クイックナビゲーション
   ======================================== */

.divisions-quick-nav {
    padding: 60px 0;
    background: 
        /* 洗練された半導体回路パターン */
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 102, 255, 0.02) 2px, rgba(0, 102, 255, 0.02) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0, 102, 255, 0.02) 2px, rgba(0, 102, 255, 0.02) 4px),
        /* グラデーションベース */
        linear-gradient(135deg, #e8eaf0 0%, #f5f6f8 50%, #e8eaf0 100%);
    border-bottom: 1px solid #d0d4dc;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    margin-bottom: 0;
}

.section-title-small {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 30px;
}

/* グリッドレイアウト - 上下二段 */
.divisions-grid {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 1段目: プローブピン事業部（横長大きく） */
.divisions-grid .division-card:first-child {
    grid-column: 1;
    grid-row: 1;
}

/* 2段目: 他3事業部（横並び） */
.divisions-row-second {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    grid-column: 1;
    grid-row: 2;
}

/* カード基本スタイル */
.division-card {
    position: relative;
    background: white;
    padding: 30px 20px;
    border-radius: 15px;
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    border: 2px solid #e0e0e0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 180px;
    overflow: hidden;
}

.division-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.division-card:hover::before {
    opacity: 0.4;
}

.division-card > * {
    position: relative;
    z-index: 1;
}

.division-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.division-card .icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.division-card:hover .icon {
    transform: scale(1.1);
}

.division-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 10px 0;
    color: var(--text-primary);
}

.division-card .card-desc {
    font-size: 0.85rem;
    color: var(--text-light);
    margin: 0;
    line-height: 1.4;
}

/* 各事業部カードの背景画像とアイコン色 */
/* 百均事業部 */
.division-card[href="100yen.html"] {
    background: white;
    border-color: #e91e63;
}

.division-card[href="100yen.html"] .icon {
    color: #e91e63;
}

.division-card[href="100yen.html"]::before {
    background-image: url('../images/100yen-shop-image.jpg');
    /* 100円ショップイメージ - お客様提供画像 */
}

/* 製造針事業部 */
.division-card[href="sewing-pins.html"] {
    background: white;
    border-color: #4caf50;
}

.division-card[href="sewing-pins.html"] .icon {
    color: #4caf50;
}

.division-card[href="sewing-pins.html"]::before {
    background-image: url('../images/100yen-crafts-icons.png');
    /* 手芸アイコンセット - お客様提供画像 */
}

/* 貿易事業部 */
.division-card[href="trading.html"] {
    background: white;
    border-color: #00bcd4;
}

.division-card[href="trading.html"] .icon {
    color: #00bcd4;
}

.division-card[href="trading.html"]::before {
    background-image: url('https://images.unsplash.com/photo-1578575437130-527eed3abbec?w=800');
    /* 世界地図・貿易のイメージ */
}

/* プローブピンカード（主力事業）- 特別強調 */
.division-card.featured {
    background: white;
    border: 3px solid #2196F3;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    position: relative;
    min-height: 200px;
    padding: 40px 30px;
    overflow: hidden;
}

/* プローブピンカードの背景画像（ゴールドの枠線用とは別） */
.division-card.featured::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('https://images.unsplash.com/photo-1518770660439-4636190af475?w=800');
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.division-card.featured:hover::after {
    opacity: 0.4;
}

.division-card.featured:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.division-card.featured .icon {
    font-size: 3.5rem;
    color: #2196F3;
    position: relative;
    z-index: 2;
}

.division-card.featured h3 {
    color: var(--text-primary);
    font-size: 1.4rem;
    position: relative;
    z-index: 2;
}

.division-card.featured .card-desc {
    color: var(--text-light);
    position: relative;
    z-index: 2;
}

/* ========================================
   タブレット対応（769px - 1024px）
   ======================================== */
@media (max-width: 1024px) and (min-width: 769px) {
    .divisions-quick-nav {
        padding: 40px 0;
    }
    
    .divisions-grid {
        gap: 20px;
    }
    
    .divisions-row-second {
        gap: 15px;
    }
    
    .division-card {
        padding: 25px 15px;
        min-height: 160px;
    }
    
    .division-card .icon {
        font-size: 2.2rem;
    }
    
    .division-card h3 {
        font-size: 1rem;
    }
    
    .division-card .card-desc {
        font-size: 0.8rem;
    }
    
    .division-card.featured {
        min-height: 180px;
        padding: 35px 25px;
    }
    
    .division-card.featured .icon {
        font-size: 3rem;
    }
    
    .division-card.featured h3 {
        font-size: 1.2rem;
    }
}

/* ========================================
   モバイル対応（768px以下）- PC版と同じ配置
   ======================================== */
@media (max-width: 768px) {
    .divisions-quick-nav {
        padding: 30px 0;
        margin-bottom: 0;
    }
    
    .section-title-small {
        font-size: 1.3rem;
        margin-bottom: 25px;
    }
    
    /* グリッドを1列で設定（PCと同じ配置） */
    .divisions-grid {
        display: grid;
        grid-template-columns: 1fr;
        grid-template-rows: auto auto;
        gap: 15px;
        padding: 0 15px;
        max-width: 100%;
    }
    
    /* 2段目は横並び3列 */
    .divisions-row-second {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    
    /* プローブピンカードは1段目（横幅いっぱい） */
    .divisions-grid .division-card:nth-child(1) {
        grid-column: 1;
        grid-row: 1;
    }
    
    /* 2段目の3つのカード */
    .divisions-grid .divisions-row-second {
        grid-column: 1;
        grid-row: 2;
    }
    
    .division-card {
        padding: 15px 10px;
        min-height: 120px;
        border-radius: 12px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .division-card .icon {
        font-size: 1.8rem;
        margin-bottom: 8px;
    }
    
    .division-card h3 {
        font-size: 0.85rem;
        margin: 0 0 3px 0;
        line-height: 1.2;
    }
    
    .division-card .card-desc {
        font-size: 0.7rem;
        line-height: 1.2;
        display: block; /* 説明文を表示 */
    }
    
    /* プローブピンは1段目（横幅いっぱい） */
    .division-card.featured {
        background: white;
        border-width: 2px;
        padding: 25px 20px;
        min-height: 150px;
    }
    
    .division-card.featured:hover {
        transform: translateY(-3px);
    }
    
    .division-card.featured .icon {
        font-size: 2.8rem;
        color: var(--primary-color);
    }
    
    .division-card.featured h3 {
        font-size: 1.1rem;
        color: var(--text-primary);
    }
    
    .division-card.featured .card-desc {
        font-size: 0.75rem;
    }
}

/* ========================================
   小型モバイル対応（480px以下）- PC版と同じ配置
   ======================================== */
@media (max-width: 480px) {
    .divisions-quick-nav {
        padding: 25px 0;
        margin-bottom: 0;
    }
    
    .section-title-small {
        font-size: 1.1rem;
        margin-bottom: 20px;
    }
    
    .divisions-grid {
        gap: 10px;
        padding: 0 10px;
    }
    
    /* 2段目は横並び3列 */
    .divisions-row-second {
        gap: 8px;
    }
    
    .division-card {
        padding: 12px 8px;
        min-height: 100px;
    }
    
    .division-card .icon {
        font-size: 1.5rem;
        margin-bottom: 5px;
    }
    
    .division-card h3 {
        font-size: 0.75rem;
        line-height: 1.2;
    }
    
    .division-card .card-desc {
        font-size: 0.65rem;
        line-height: 1.2;
        display: block;
    }
    
    .division-card.featured {
        padding: 20px 15px;
        min-height: 130px;
    }
    
    .division-card.featured .icon {
        font-size: 2.2rem;
        color: var(--primary-color);
    }
    
    .division-card.featured h3 {
        font-size: 0.95rem;
        color: var(--text-primary);
    }
    
    .division-card.featured .card-desc {
        font-size: 0.7rem;
    }
}