/* PC向け: グリッドレイアウトによる日本地図 (Compact Block Style) */
.japan-map {
    display: grid;
    grid-template-columns: repeat(16, 1fr);
    grid-template-rows: repeat(14, 1fr);
    gap: 2px;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    aspect-ratio: 16/10;
    position: relative;
    user-select: none;
    padding: 1rem;
}

.japan-map a {
    text-decoration: none;
}

/* ラッパー: PCではグリッド構造に影響を与えない */
.region-group-wrapper,
.mobile-pref-list {
    display: contents;
}

/* グループタイトル: PCでは非表示 */
.region-group-title {
    display: none;
}

/* 都道府県各セルのスタイル */
.pref-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: white;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 2px;
    /* Square styling */
    padding: 2px;
    font-size: 11px;
    font-weight: 600;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    transition: all 0.2s;
    text-align: center;
    line-height: 1.1;
    overflow: hidden;
    height: 100%;
    min-height: 44px;
}

.pref-cell:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    z-index: 10;
    filter: brightness(1.1);
    border-color: white;
}

.pref-cell .pref-name {
    margin-bottom: 1px;
    display: block;
    white-space: nowrap;
}

/* Count hidden in compact view optionally, or styled specifically */
.pref-cell .pref-count {
    font-size: 9px;
    color: rgba(255, 255, 255, 0.9);
    display: block;
    font-weight: normal;
}


/* --- Region Colors (Pastel/Blocky) --- */

/* Hokkaido: Blue */
.pref-hokkaido {
    background-color: #6eaecf;
}

/* Tohoku: Cyan */
.pref-aomori,
.pref-iwate,
.pref-miyagi,
.pref-akita,
.pref-yamagata,
.pref-fukushima {
    background-color: #7bc5d7;
}

/* Kanto: Teal */
.pref-ibaraki,
.pref-tochigi,
.pref-gunma,
.pref-saitama,
.pref-chiba,
.pref-tokyo,
.pref-kanagawa {
    background-color: #72c6a6;
}

/* Chubu: Green */
.pref-niigata,
.pref-toyama,
.pref-ishikawa,
.pref-fukui,
.pref-yamanashi,
.pref-nagano,
.pref-gifu,
.pref-shizuoka,
.pref-aichi {
    background-color: #a6c76c;
}

/* Kinki: Yellow-Green */
.pref-mie,
.pref-shiga,
.pref-kyoto,
.pref-osaka,
.pref-hyogo,
.pref-nara,
.pref-wakayama {
    background-color: #d8c644;
}

/* Chugoku: Orange */
.pref-tottori,
.pref-shimane,
.pref-okayama,
.pref-hiroshima,
.pref-yamaguchi {
    background-color: #f0a856;
}

/* Shikoku: Salmon/Pink */
.pref-tokushima,
.pref-kagawa,
.pref-ehime,
.pref-kochi {
    background-color: #ee9c7d;
}

/* Kyushu/Okinawa: Red */
.pref-fukuoka,
.pref-saga,
.pref-nagasaki,
.pref-kumamoto,
.pref-oita,
.pref-miyazaki,
.pref-kagoshima,
.pref-okinawa {
    background-color: #ea7a74;
}


/* --- Grid Positioning (Compact Block) --- */

/* Hokkaido (Large block Top Right) */
.pref-hokkaido {
    grid-column: 14 / 16;
    grid-row: 1 / 3;
}

/* Tohoku (Below Hokkaido) */
.pref-aomori {
    grid-column: 14 / 16;
    grid-row: 3 / 4;
}

.pref-akita {
    grid-column: 14 / 15;
    grid-row: 4 / 5;
}

.pref-iwate {
    grid-column: 15 / 16;
    grid-row: 4 / 5;
}

.pref-yamagata {
    grid-column: 14 / 15;
    grid-row: 5 / 6;
}

.pref-miyagi {
    grid-column: 15 / 16;
    grid-row: 5 / 6;
}

.pref-fukushima {
    grid-column: 14 / 16;
    grid-row: 6 / 7;
}

/* Kanto (Below Tohoku) */
.pref-gunma {
    grid-column: 13 / 14;
    grid-row: 7 / 8;
}

.pref-tochigi {
    grid-column: 14 / 15;
    grid-row: 7 / 8;
}

.pref-ibaraki {
    grid-column: 15 / 16;
    grid-row: 7 / 8;
}

.pref-saitama {
    grid-column: 13 / 14;
    grid-row: 8 / 9;
}

.pref-tokyo {
    grid-column: 14 / 15;
    grid-row: 8 / 9;
}

.pref-chiba {
    grid-column: 15 / 16;
    grid-row: 8 / 10;
}

.pref-kanagawa {
    grid-column: 13 / 15;
    grid-row: 9 / 10;
}

/* Chubu (Left of Kanto/Tohoku) */
.pref-niigata {
    grid-column: 13 / 14;
    grid-row: 4 / 6;
}

/* Extended vert */
.pref-nagano {
    grid-column: 12 / 14;
    /* Expanded width to 2 */
    grid-row: 6 / 7;
}

.pref-yamanashi {
    grid-column: 12 / 13;
    grid-row: 7 / 8;
}

.pref-shizuoka {
    grid-column: 12 / 13;
    grid-row: 8 / 10;
}

.pref-aichi {
    grid-column: 11 / 12;
    grid-row: 8 / 9;
}

.pref-gifu {
    grid-column: 11 / 12;
    grid-row: 7 / 8;
}

.pref-toyama {
    grid-column: 12 / 13;
    grid-row: 5 / 6;
}

.pref-ishikawa {
    grid-column: 11 / 12;
    grid-row: 5 / 6;
}

.pref-fukui {
    grid-column: 11 / 12;
    grid-row: 6 / 7;
}

/* Kinki (Left of Chubu) */
.pref-shiga {
    grid-column: 10 / 11;
    grid-row: 6 / 7;
}

.pref-mie {
    grid-column: 10 / 11;
    grid-row: 8 / 10;
}

.pref-kyoto {
    grid-column: 9 / 10;
    grid-row: 6 / 7;
}

.pref-nara {
    grid-column: 10 / 11;
    grid-row: 7 / 8;
}

.pref-wakayama {
    grid-column: 9 / 10;
    grid-row: 8 / 10;
}

.pref-osaka {
    grid-column: 9 / 10;
    grid-row: 7 / 8;
}

.pref-hyogo {
    grid-column: 8 / 9;
    grid-row: 6 / 9;
}


/* Chugoku (Shifted +1 Col, +1 Row) */
.pref-tottori {
    grid-column: 7 / 8;
    grid-row: 6 / 7;
}

.pref-okayama {
    grid-column: 7 / 8;
    grid-row: 7 / 8;
}

.pref-shimane {
    grid-column: 5 / 7;
    grid-row: 6 / 7;
}

.pref-hiroshima {
    grid-column: 6 / 7;
    grid-row: 7 / 8;
}

.pref-yamaguchi {
    grid-column: 5 / 6;
    grid-row: 7 / 8;
}

/* Shikoku (Shifted +1 Col, +1 Row) */
.pref-kagawa {
    grid-column: 7 / 8;
    grid-row: 9 / 10;
}

.pref-tokushima {
    grid-column: 8 / 9;
    grid-row: 9 / 10;
}

.pref-ehime {
    grid-column: 6 / 7;
    grid-row: 9 / 10;
}

.pref-kochi {
    grid-column: 6 / 8;
    grid-row: 10 / 11;
}

/* Kyushu (Shifted +1 Col, +1 Row) */
.pref-fukuoka {
    grid-column: 4 / 5;
    grid-row: 7 / 8;
}

.pref-saga {
    grid-column: 3 / 4;
    grid-row: 7 / 8;
}

.pref-nagasaki {
    grid-column: 2 / 3;
    grid-row: 7 / 9;
}

.pref-oita {
    grid-column: 4 / 5;
    grid-row: 8 / 9;
}

.pref-kumamoto {
    grid-column: 3 / 4;
    grid-row: 8 / 10;
}

.pref-miyazaki {
    grid-column: 4 / 5;
    grid-row: 9 / 11;
}

.pref-kagoshima {
    grid-column: 2 / 4;
    grid-row: 10 / 11;
}

/* Okinawa */
.pref-okinawa {
    grid-column: 2 / 3;
    grid-row: 12 / 13;
}


/* =========================================
   モバイル・レスポンシブ対応
   ========================================= */
@media (max-width: 768px) {
    .japan-map-container {
        padding: 0;
    }

    .japan-map {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
        aspect-ratio: auto;
        margin: 0;
        padding: 0;
    }

    .region-group-wrapper {
        display: block;
        background: white;
        border-radius: 8px;
        padding: 1rem;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        border: 1px solid var(--border);
    }

    .region-group-title {
        display: flex;
        align-items: center;
        width: 100%;
        font-weight: 700;
        margin-bottom: 1rem;
        padding-bottom: 0.5rem;
        border-bottom: 1px solid var(--border);
        color: var(--secondary);
    }

    /* モバイル用にブロック（リスト）コンテナを作る場合 */
    .mobile-pref-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    /* モバイルではPC用のグリッド配置・スタイルを上書き */
    .pref-cell {
        grid-column: auto !important;
        grid-row: auto !important;
        margin: 0 !important;
        background-color: var(--muted);
        min-height: 44px;
        flex-direction: row;
        justify-content: space-between;
        padding: 0.5rem 1rem;
        text-align: left;
        color: var(--foreground);
        text-shadow: none;
        border: 1px solid var(--border);
    }

    .pref-cell:hover {
        transform: none;
        box-shadow: none;
        filter: none;
        background-color: var(--primary);
        color: white;
    }

    .pref-cell .pref-name {
        font-size: 0.875rem;
        margin-bottom: 0;
    }

    .pref-cell .pref-count {
        font-size: 0.75rem;
        margin-left: 0.5rem;
        color: var(--muted-foreground);
    }

    .pref-cell:hover .pref-count {
        color: white;
    }
}