/* ========================================
 * jex 公用側邊導覽佈局樣式 (Sidebar Navigation Layout)
 * ========================================
 * 設計語言：Material Design 3 (M3)
 * 依賴：variables.css (MD3 tokens)
 * 用途：User Settings / Company Management / Dynamic 360 等管理頁面
 * ======================================== */

/* ======== 嚴格 scope：避免污染整站 box-sizing ======== */
.jex-sidebar-layout,
.jex-sidebar-layout *,
.jex-sidebar-layout *::before,
.jex-sidebar-layout *::after {
    box-sizing: border-box;
}

/* ======== 主容器（與 stepper-layout.css 保持一致） ======== */
/* 說明：外層容器只作為 CSS 變數作用域，尺寸樣式由此處統一管理 */
.jex-sidebar-layout {
    display: flex;
    flex-direction: column;
    /* 尺寸：與 stepper-layout 一致 */
    width: calc(100% - 48px);
    max-width: 1500px;
    margin: 3rem auto;
    /* 視覺樣式 */
    background-color: var(--md-sys-color-surface);
    border-radius: var(--jex-container-radius);
    box-shadow: var(--jex-container-shadow);
    overflow: hidden;
    min-height: 80vh;
    border: none;
    /* 字型 */
    font-family: system-ui, sans-serif;
}

@media (min-width: 992px) {
    .jex-sidebar-layout {
        flex-direction: row;
    }
}

@media (max-width: 768px) {
    .jex-sidebar-layout {
        width: calc(100% - 24px);
        margin: 1rem auto;
    }
}


/* ======== 側邊欄 ======== */
.jex-sidebar-layout__nav {
    width: 280px;
    /* ======== 佈局保護：側邊欄不可被主內容擠壓 ======== */
    /* 說明：Flex item 預設允許 shrink（flex: 0 1 auto），當主內容出現長字串/寬表格時會把側邊欄擠窄。
     * 這裡明確鎖定側邊欄寬度與最小寬度，確保任何右側內容都不會影響側邊欄尺寸。
     */
    flex: 0 0 280px;
    flex-shrink: 0;
    min-width: 280px;
    /* ======== 圓角保護：避免在特定頁面（例如需 sticky）父層 overflow 改為 visible 時，側邊欄底色蓋掉主容器圓角 ======== */
    border-top-left-radius: var(--jex-container-radius);
    border-bottom-left-radius: var(--jex-container-radius);
    background-color: var(--md-sys-color-surface-variant);
    border-right: 0px solid var(--md-sys-color-outline-variant);
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
}

/* ======== 側邊欄：頂部操作區（返回按鈕） ======== */
.jex-sidebar-layout__nav .jex-sidebar-layout__top-actions {
    margin-bottom: 1.5rem;
    padding: 0 0.5rem;
}

.jex-sidebar-layout__nav .jex-sidebar-layout__top-actions .btn-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--md-sys-shape-corner-full);
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    text-decoration: none;
    font-weight: 500;
    border: 1px solid var(--md-sys-color-outline);
    transition: all 0.2s;
    font-size: 0.9rem;
}

.jex-sidebar-layout__nav .jex-sidebar-layout__top-actions .btn-back:hover {
    background: var(--md-sys-color-surface);
    border-color: var(--md-sys-color-on-surface);
    color: var(--md-sys-color-on-surface);
}

/* ======== 側邊欄：標題區塊（模組標題/公司名稱） ======== */
.jex-sidebar-layout__nav .jex-sidebar-layout__header-block {
    margin-bottom: 2rem;
    padding: 0 0.5rem;
}

.jex-sidebar-layout__nav .jex-sidebar-layout__header-block h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.jex-sidebar-layout__nav .jex-sidebar-layout__header-block .company-name,
.jex-sidebar-layout__nav .jex-sidebar-layout__header-block .module-desc {
    font-size: 0.9rem;
    color: var(--md-sys-color-on-surface-variant);
    margin: 0;
}

/* ======== 側邊欄：導覽清單 ======== */
.jex-sidebar-layout__nav nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.jex-sidebar-layout__nav nav a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    color: var(--md-sys-color-on-surface-variant);
    font-weight: 500;
    border-radius: var(--md-sys-shape-corner-full);
    transition: all 0.2s ease;
}

.jex-sidebar-layout__nav nav a:hover {
    background-color: color-mix(in srgb, var(--md-sys-color-on-surface), transparent 92%);
    color: var(--md-sys-color-on-surface);
}

.jex-sidebar-layout__nav nav a.active {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    font-weight: 600;
}

.jex-sidebar-layout__nav nav a svg,
.jex-sidebar-layout__nav nav a .dashicons {
    width: 24px;
    height: 24px;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ======== 主內容區 ======== */
.jex-sidebar-layout__main {
    /* ======== 佈局保護：主內容允許縮放，避免推擠側邊欄 ======== */
    /* 說明：Flex item 的預設 min-width 為 auto，會導致主內容「不願意縮」進而把側邊欄擠壓。
     * 設定 min-width: 0 讓主內容可縮到容器可用寬度內，並在必要時於主內容內部產生水平捲動。
     */
    flex: 1 1 auto;
    min-width: 0;
    /* ======== 圓角保護：與 nav 對稱，確保右側外角在 overflow 覆寫時仍維持圓角 ======== */
    border-top-right-radius: var(--jex-container-radius);
    border-bottom-right-radius: var(--jex-container-radius);
    padding: 3rem 4rem;
    overflow-y: auto;
    overflow-x: auto;
}

/* ======== 內容區：標題 ======== */
.jex-sidebar-layout__header {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
    margin-bottom: 2.5rem;
}

.jex-sidebar-layout__header h1 {
    font-size: 2.25rem;
    margin: 0 0 0.5rem;
    font-weight: 400;
}

.jex-sidebar-layout__header p {
    margin: 0;
    color: var(--md-sys-color-on-surface-variant);
    font-size: 1rem;
}

/* ======== 內容區：頁尾（按鈕區） ======== */
.jex-sidebar-layout__footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--md-sys-color-outline-variant);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ======== 表單區塊 ======== */
.jex-sidebar-layout .form-section {
    margin-bottom: 3rem;
}

.jex-sidebar-layout .form-section h3 {
    font-size: 1.25rem;
    margin: 0 0 1.5rem;
    color: var(--md-sys-color-primary);
    font-weight: 500;
}

.jex-sidebar-layout .form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.jex-sidebar-layout .form-group {
    display: flex;
    flex-direction: column;
    position: relative;
}

.jex-sidebar-layout .form-group label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* ======== MD3 Outlined Text Field 樣式 ======== */
.jex-sidebar-layout .form-group input,
.jex-sidebar-layout .form-group select,
.jex-sidebar-layout .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-extra-small);
    font-size: 1rem;
    background-color: transparent;
    transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
    color: var(--md-sys-color-on-surface);
}

.jex-sidebar-layout .form-group input:hover,
.jex-sidebar-layout .form-group select:hover,
.jex-sidebar-layout .form-group textarea:hover {
    border-color: var(--md-sys-color-on-surface);
}

.jex-sidebar-layout .form-group input:focus,
.jex-sidebar-layout .form-group select:focus,
.jex-sidebar-layout .form-group textarea:focus {
    outline: none;
    border-color: var(--md-sys-color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--md-sys-color-primary), transparent 80%);
    background-color: var(--md-sys-color-surface);
}

.jex-sidebar-layout .form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.jex-sidebar-layout .form-group .field-note {
    font-size: 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-top: 0.5rem;
    margin-left: 4px;
}

.jex-sidebar-layout input[readonly] {
    background-color: var(--md-sys-color-surface-variant);
    border-color: transparent;
    color: var(--md-sys-color-on-surface-variant);
    cursor: default;
}

/* ======== 空白狀態 ======== */
.jex-sidebar-layout .empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--md-sys-color-on-surface-variant);
}

.jex-sidebar-layout .empty-state .dashicons {
    font-size: 48px;
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    color: var(--md-sys-color-primary);
}

.jex-sidebar-layout .empty-state h3 {
    margin: 0 0 0.5rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
}

.jex-sidebar-layout .empty-state p {
    margin: 0;
}

/* ======== 載入指示 ======== */
.jex-sidebar-layout .loading-text {
    text-align: center;
    padding: 3rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* ======== 響應式設計 ======== */
@media (max-width: 992px) {
    .jex-sidebar-layout {
        flex-direction: column;
    }

    .jex-sidebar-layout__nav {
        width: 100%;
        /* 行動/平板：導覽區改為水平 Tab，不需要固定 280px */
        flex: 0 0 auto;
        min-width: 0;
        /* 行動/平板：導覽區位於上方，改為上方兩角圓角，避免視覺方角 */
        border-top-right-radius: var(--jex-container-radius);
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
        border-right: none;
        border-bottom: 1px solid var(--md-sys-color-outline-variant);
        padding: 1rem;
    }

    .jex-sidebar-layout__nav .jex-sidebar-layout__top-actions {
        margin-bottom: 1rem;
    }

    .jex-sidebar-layout__nav .jex-sidebar-layout__header-block {
        margin-bottom: 1rem;
    }

    .jex-sidebar-layout__nav nav ul {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 0.5rem;
        gap: 0.5rem;
    }

    .jex-sidebar-layout__nav nav a {
        white-space: nowrap;
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .jex-sidebar-layout__main {
        padding: 2rem 1.5rem;
        /* 行動/平板：主內容位於下方，改為下方兩角圓角 */
        border-top-left-radius: 0;
        border-top-right-radius: 0;
        border-bottom-left-radius: var(--jex-container-radius);
        border-bottom-right-radius: var(--jex-container-radius);
    }

    .jex-sidebar-layout__header h1 {
        font-size: 1.75rem;
    }

    .jex-sidebar-layout .form-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .jex-sidebar-layout__nav nav a span {
        display: none;
    }

    .jex-sidebar-layout__nav nav a {
        padding: 0.75rem;
        justify-content: center;
    }

    .jex-sidebar-layout__nav nav a svg,
    .jex-sidebar-layout__nav nav a .dashicons {
        margin: 0;
    }
}