* {
    box-sizing: border-box;
}


/* =========================
   整體頁面
   ========================= */

html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
}

body {
    width: 100vw;
    height: 100dvh;

    display: grid;

    /*
        第 1 列：標題
        第 2 列：搜尋 / 分類
        第 3 列：地圖 + 店家，吃掉所有剩餘空間
        第 4 列：版權
    */
    grid-template-rows:
        auto
        auto
        minmax(0, 1fr)
        auto;

    font-family: Arial, "Noto Sans TC", sans-serif;
    background: #f5f5f5;
    color: #222;
}


/* =========================
   標題
   ========================= */

header {
    padding: 18px 16px 12px;

    background: white;
    border-bottom: 1px solid #ddd;
}

header h1 {
    margin: 0 0 6px;
    font-size: 24px;
}

header p {
    margin: 0;

    color: #666;
    font-size: 14px;
}


/* =========================
   搜尋 / 分類
   ========================= */

.toolbar {
    padding: 12px 16px;

    background: white;
    border-bottom: 1px solid #ddd;
}

#searchInput {
    width: 100%;
    height: 42px;

    padding: 0 12px;

    border: 1px solid #ccc;
    border-radius: 10px;

    font-size: 16px;
}

.filters {
    display: flex;
    gap: 8px;

    margin-top: 10px;

    overflow-x: auto;
    overflow-y: hidden;
}

.filter-btn {
    flex-shrink: 0;

    padding: 8px 14px;

    border: 1px solid #bbb;
    border-radius: 999px;

    background: white;

    white-space: nowrap;
    cursor: pointer;
}

.filter-btn.active {
    background: #222;
    color: white;
    border-color: #222;
}


/* =========================
   主內容
   ========================= */

main {
    width: 100%;
    height: 100%;

    min-width: 0;
    min-height: 0;

    overflow: hidden;
}


/* =========================
   地圖
   ========================= */

#map {
    width: 100%;
    height: 100%;

    min-width: 0;
    min-height: 0;
}


/* =========================
   店家清單
   ========================= */

.store-list {
    width: 100%;
    height: 100%;

    min-width: 0;
    min-height: 0;

    padding: 12px;

    overflow-x: hidden;
    overflow-y: auto;
}

.store-card {
    background: white;

    border-radius: 14px;

    padding: 14px;
    margin-bottom: 10px;

    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.store-card h2 {
    margin: 0 0 8px;

    font-size: 18px;
}

.store-card p {
    margin: 5px 0;

    line-height: 1.5;
}

.category {
    display: inline-block;

    margin-bottom: 8px;
    padding: 4px 9px;

    border-radius: 999px;

    background: #eee;

    font-size: 13px;
}

.nav-btn {
    display: inline-block;

    margin-top: 8px;
    padding: 8px 12px;

    border-radius: 8px;

    background: #222;
    color: white;

    text-decoration: none;
}

.empty-message {
    padding: 24px 12px;

    text-align: center;
    color: #777;
}

.error-message {
    margin: 12px;
    padding: 14px;

    border-radius: 10px;

    background: #fff3f3;
    color: #9b1c1c;

    line-height: 1.5;
}


/* =========================
   Footer
   ========================= */

footer {
    padding: 5px 10px;

    background: white;
    border-top: 1px solid #ddd;

    color: #777;

    font-size: 11px;
    line-height: 1.4;

    text-align: center;

    white-space: normal;
    overflow-wrap: anywhere;
}


/* =========================
   桌機版
   ========================= */

@media (min-width: 900px) {

    main {
        display: grid;

        /*
            左邊地圖 2/3
            右邊店家 1/3
        */
        grid-template-columns:
            minmax(0, 2fr)
            minmax(300px, 1fr);

        grid-template-rows: minmax(0, 1fr);
    }

    #map {
        grid-column: 1;
        grid-row: 1;
    }

    .store-list {
        grid-column: 2;
        grid-row: 1;
    }
}


/* =========================
   手機版
   ========================= */

@media (max-width: 899px) {

    body {
        font-size: 14px;
    }


    /* 標題縮小 */

    header {
        padding: 10px 12px 6px;
    }

    header h1 {
        margin-bottom: 4px;

        font-size: 18px;
    }

    header p {
        font-size: 12px;
    }


    /* 搜尋列縮小 */

    .toolbar {
        padding: 8px 10px;
    }

    #searchInput {
        height: 38px;

        padding: 0 10px;

        font-size: 14px;
    }

    .filters {
        gap: 6px;

        margin-top: 7px;
    }

    .filter-btn {
        padding: 6px 11px;

        font-size: 13px;
    }


    /* 手機：上面地圖、下面店家 */

    main {
        display: grid;

        grid-template-columns: minmax(0, 1fr);

        /*
            55% 地圖
            45% 店家
        */
        grid-template-rows:
            minmax(0, 55fr)
            minmax(0, 45fr);
    }

    #map {
        grid-column: 1;
        grid-row: 1;
    }

    .store-list {
        grid-column: 1;
        grid-row: 2;

        padding: 8px;
    }


    /* 店家資訊縮小 */

    .store-card {
        padding: 10px;
        margin-bottom: 8px;

        border-radius: 12px;
    }

    .store-card h2 {
        margin-bottom: 6px;

        font-size: 16px;
    }

    .store-card p {
        margin: 4px 0;

        font-size: 13px;
        line-height: 1.4;
    }

    .category {
        margin-bottom: 6px;

        padding: 3px 8px;

        font-size: 12px;
    }

    .nav-btn {
        margin-top: 6px;

        padding: 7px 10px;

        font-size: 13px;
    }


    /* Footer 手機版 */

    footer {
        padding: 4px 8px;

        font-size: 10px;
        line-height: 1.35;
    }
}