/* ========================================
   CSS変数定義
   ======================================== */
    :root {
        /* 色 */
        --color-primary: #FD7C21;
        --color-primary-dark: #E66B10;
        --color-text: #333;
        --color-text-light: #666;
        --color-bg: #f5f5f5;
        --color-border: #e0e0e0;
        --color-white: #ffffff;
        --color-error: #f44336;
        --color-warning: #ff9800;
        --color-success: #FD7C21;
        --color-on-primary: #3E2723;
        --color-info: #2196f3;

        /* スペーシング */
        --spacing-xs: 0.25rem;
        --spacing-sm: 0.5rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;

        /* 角丸 */
        --radius-sm: 4px;
        --radius-md: 8px;
        --radius-lg: 12px;
        --radius-xl: 16px;

        /* シャドウ */
        --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
        --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
        --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);
        --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.2);

        /* トランジション */
        --transition-fast: 0.1s ease;
        --transition-normal: 0.2s ease;
        --transition-slow: 0.3s ease;

        /* フォントサイズ */
        --font-xs: 0.875rem;
        --font-sm: 0.9375rem;
        --font-md: 1rem;
        --font-lg: 1.25rem;
        --font-xl: 1.5rem;
    }

    /* ========================================
   ドロップダウンメニュー
   ======================================== */

    .dropdown-menu-item {
        padding: var(--spacing-md) var(--spacing-md);
        color: var(--color-text);
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
        border-radius: var(--radius-md);
        font-size: var(--font-sm);
        transition: background var(--transition-normal);
        cursor: pointer;
    }

    .dropdown-menu-item:hover,
    .dropdown-menu-item:active {
        background: var(--color-bg);
    }

    .dropdown-menu-item .material-icons {
        font-size: var(--font-sm);
        color: var(--color-primary);
    }

    .dropdown-menu-item-text {
        font-size: var(--font-sm);
    }

    .dropdown-menu-divider {
        height: 1px;
        background: var(--color-border);
        margin: var(--spacing-sm) 0;
    }

    /* ========================================
   通知モーダル
   ======================================== */

    .notification-modal {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 2000;
    }

    .notification-modal.active {
        display: flex;
        align-items: flex-start;
        justify-content: center;
        padding-top: var(--spacing-md);
    }

    .notification-modal-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(2px);
    }

    .notification-modal-content {
        position: relative;
        background: var(--color-bg-white);
        border-radius: var(--radius-lg);
        width: 90%;
        max-width: 500px;
        max-height: 80vh;
        display: flex;
        flex-direction: column;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        z-index: 2001;
    }

    .notification-modal-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--spacing-lg) var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
    }

    .notification-modal-header h2 {
        font-size: var(--font-lg);
        font-weight: 600;
        color: var(--color-text);
        margin: 0;
    }

    .notification-modal-close {
        background: none;
        border: none;
        color: var(--color-text-light);
        cursor: pointer;
        padding: var(--spacing-sm);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all var(--transition-normal);
    }

    .notification-modal-close:hover {
        background: var(--color-bg);
        color: var(--color-text);
    }

    .notification-modal-close .material-icons {
        font-size: var(--font-lg);
    }

    .notification-modal-body {
        padding: var(--spacing-md) var(--spacing-lg);
        flex: 1;
    }

    .notification-loading {
        text-align: center;
        padding: var(--spacing-lg);
        color: var(--color-text-light);
    }

    .notification-empty {
        text-align: center;
        padding: var(--spacing-lg) var(--spacing-md);
        color: var(--color-text-lighter);
    }

    .notification-empty .material-icons {
        font-size: var(--font-lg);
        color: var(--color-text-lighter);
        margin-bottom: 1rem;
    }

    .notification-list {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .notification-item {
        background: var(--color-bg);
        border-radius: var(--radius-md);
        padding: 1rem;
        border-left: 4px solid var(--color-primary);
        cursor: pointer;
        transition: all 0.2s;
    }

    .notification-item:hover {
        background: var(--color-primary-light);
        transform: translateX(4px);
    }

    .notification-item:active {
        transform: scale(0.99) translateX(4px);
        background: var(--color-primary-light);
    }

    .notification-item-header {
        display: flex;
        align-items: start;
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }

    .notification-item-icon {
        background: var(--color-primary);
        color: var(--color-on-primary);
        width: 40px;
        height: 40px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .notification-item-icon .material-icons {
        font-size: 20px;
    }

    .notification-item-content {
        flex: 1;
        min-width: 0;
    }

    .notification-item-title {
        font-weight: 600;
        color: var(--color-text);
        margin-bottom: var(--spacing-sm);
        font-size: var(--font-md);
    }

    .notification-item-message {
        color: var(--color-text-light);
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .notification-item-footer {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-top: var(--spacing-sm);
        padding-top: var(--spacing-sm);
        border-top: 1px solid var(--color-border);
    }

    .notification-item-count {
        background: var(--color-danger);
        color: var(--color-on-primary);
        padding: var(--spacing-xs) var(--spacing-sm);
        border-radius: var(--radius-sm);
        font-size: var(--font-xs);
        font-weight: 600;
    }

    .notification-item-link {
        color: var(--color-primary);
        font-size: var(--font-xs);
        font-weight: 500;
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .notification-item-link:hover {
        text-decoration: underline;
    }

    .notification-item-link .material-icons {
        font-size: 16px;
    }

    /* メニューポップアップ（将来の拡張用） */
    .menu-popup {
        position: absolute;
        top: calc(100% + var(--spacing-xs));
        right: var(--spacing-xs);
        background: var(--color-bg-white);
        border-radius: var(--radius-lg);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        padding: var(--spacing-xs);
        min-width: 160px;
        display: none;
        z-index: 1000;
        opacity: 0;
        transform: translateY(-10px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .menu-popup.active {
        display: block;
        opacity: 1;
        transform: translateY(0);
    }

    .menu-item {
        padding: var(--spacing-xs) var(--spacing-sm);
        color: var(--color-text);
        text-decoration: none;
        display: block;
        border-radius: var(--radius-sm);
        font-size: var(--font-xs);
        transition: background 0.2s;
    }

    .menu-item:hover {
        background: var(--color-bg);
    }

    .menu-item.logout {
        color: var(--color-danger);
        border-top: 1px solid var(--color-border);
        margin-top: var(--spacing-xs);
        padding-top: var(--spacing-sm);
    }

    /* コンテンツエリア */
    .container {
        padding: var(--spacing-md);
    }

    .tabs {
        display: none;
        /* デフォルト非表示 (JSで表示制御) */
        gap: var(--spacing-xs);
        margin-bottom: var(--spacing-md);
        overflow-x: auto;
        scrollbar-width: none;
    }

    .tabs::-webkit-scrollbar {
        display: none;
    }

    .tab {
        padding: var(--spacing-xs) var(--spacing-sm);
        background: var(--color-bg-white);
        border: 2px solid var(--color-border);
        border-radius: var(--radius-sm);
        cursor: pointer;
        font-size: var(--font-xs);
        font-weight: 500;
        color: var(--color-text);
        /* Ensure visibility in light mode */
        white-space: nowrap;
        transition: all 0.3s;
        flex-shrink: 0;
    }

    .tab:hover,
    .tab:active {
        border-color: var(--color-primary);
        background: var(--color-primary-light);
    }

    .tab.active {
        background: var(--color-primary);
        color: var(--color-on-primary);
        border-color: var(--color-primary);
    }

    .tab.disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

    .action-bar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: var(--spacing-md);
    }

    .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        border: none;
        border-radius: var(--radius-sm);
        font-size: var(--font-xs);
        font-weight: 500;
        cursor: pointer;
        transition: all 0.3s;
    }

    .btn-primary {
        background: var(--color-primary);
        color: var(--color-on-primary);
    }

    .btn-primary:hover {
        background: var(--color-primary-dark);
    }

    .btn-secondary {
        background: var(--color-bg-white);
        color: var(--color-primary);
        border: 2px solid var(--color-primary);
    }

    .btn-secondary:hover {
        background: var(--color-primary-light);
    }

    /* ========================================
    投稿カード
    ======================================== */

    .posts-list {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .post-card {
        background: var(--color-bg-white);
        border-radius: var(--radius-lg);
        padding: var(--spacing-md);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    }

    .post-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    }

    .card {
        background: var(--color-bg-white);
        border-radius: var(--radius-lg);
        padding: var(--spacing-md);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    }

    .post-header {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        margin-bottom: var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .post-meta {
        flex: 1;
    }

    .post-title {
        font-size: var(--font-sm);
        font-weight: 600;
        margin-bottom: var(--spacing-xs);
        color: var(--color-text);
    }

    .post-info {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
        font-size: var(--font-xs);
        color: var(--color-text-light);
    }

    .post-info-item {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .post-status {
        display: flex;
        gap: var(--spacing-xs);
    }

    .status-badge {
        padding: var(--spacing-xs) var(--spacing-sm);
        position: relative;
    }

    .post-content-wrapper {
        position: relative;
    }

    .post-content {
        overflow-wrap: break-word;
        word-break: break-word;
    }

    .post-content.collapsed {
        max-height: 4.5em;
        overflow: hidden;
        position: relative;
        overflow-wrap: break-word;
        /* Added for text wrapping */
        word-break: break-word;
        /* Added for text wrapping */
    }

    .post-content.collapsed::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 2em;
        background: linear-gradient(to bottom, transparent, var(--color-bg-white));
        pointer-events: none;
        z-index: 0;
    }

    .read-more-container {
        margin-top: var(--spacing-xs);
        position: relative;
        z-index: 2;
    }

    .read-more-btn {
        background: rgba(255, 255, 255, 0.95);
        border: none;
        color: var(--color-primary);
        font-size: var(--font-xs);
        font-weight: 500;
        cursor: pointer;
        padding: var(--spacing-xs) var(--spacing-sm);
        display: inline-flex;
        align-items: center;
        gap: 0.25rem;
        transition: all 0.2s;
        position: relative;
        z-index: 2;
        border-radius: 6px;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        width: 100%;
        justify-content: center;
    }

    .read-more-btn:hover,
    .read-more-btn:active {
        color: var(--color-primary-dark);
        text-decoration: underline;
        background: rgba(255, 255, 255, 1);
    }

    .read-more-btn .material-icons {
        font-size: 16px;
    }

    .post-attachments {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
        margin-top: var(--spacing-xs);
        padding-top: var(--spacing-xs);
        border-top: 1px solid var(--color-border);
    }

    .attachment-item {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
        background: var(--color-bg);
        border-radius: var(--radius-sm);
        font-size: var(--font-xs);
        color: var(--color-text-light);
        text-decoration: none;
    }

    .attachment-item:hover,
    .attachment-item:active {
        background: var(--color-border);
    }

    .attachment-image {
        width: 100%;
        max-width: 400px;
        height: auto;
        border-radius: var(--radius-sm);
        margin: var(--spacing-xs) 0;
        cursor: pointer;
    }

    .attachment-pdf {
        display: inline-flex;
        align-items: center;
        gap: var(--spacing-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
        background: #fff3e0;
        /* 薄いオレンジ */
        border-radius: var(--radius-sm);
        color: #e65100;
        text-decoration: none;
        font-weight: 500;
    }

    .attachment-pdf:hover {
        background: #ffe0b2;
    }

    .post-footer {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-top: var(--spacing-xs);
        padding-top: var(--spacing-xs);
        border-top: 1px solid var(--color-border);
        font-size: var(--font-xs);
        color: var(--color-text-lighter);
    }

    .read-status {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }


    /* ログアウトモーダル */
    .logout-modal {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 3000;
        align-items: center;
        justify-content: center;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .logout-modal.active {
        display: flex;
        opacity: 1;
    }

    .logout-modal-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        z-index: 3001;
        /* Explicit Z-index */
    }

    .logout-modal-content {
        position: relative;
        background: var(--color-bg-white);
        /* Fallback for safety */
        background-color: var(--color-bg-white, #ffffff);
        border-radius: var(--radius-lg);
        padding: var(--spacing-md);
        width: 90%;
        max-width: 400px;
        text-align: center;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        transform: scale(0.9);
        transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        z-index: 3002;
        /* Higher than overlay */
    }

    html.theme-dark .logout-modal-content {
        background-color: #1e1e1e;
        /* Explicit Dark Mode Bg */
        color: #e0e0e0;
    }

    .logout-modal.active .logout-modal-content {
        transform: scale(1);
    }

    .logout-icon-wrapper {
        width: 80px;
        height: 80px;
        background: var(--color-status-left);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto var(--spacing-md);
    }

    .logout-icon-wrapper .material-icons {
        font-size: 40px;
        color: var(--color-danger);
    }

    .logout-modal-title {
        font-size: var(--font-sm);
        font-weight: 600;
        color: var(--color-text);
        margin-bottom: var(--spacing-xs);
    }

    .logout-modal-message {
        color: var(--color-text-lighter);
        font-size: var(--font-xs);
        margin-bottom: var(--spacing-md);
        line-height: 1.5;
    }

    .logout-modal-actions {
        display: flex;
        gap: var(--spacing-xs);
        justify-content: center;
    }

    .btn-logout-cancel {
        padding: var(--spacing-xs) var(--spacing-sm);
        border: none;
        border-radius: var(--radius-sm);
        background: var(--color-bg);
        color: var(--color-text-light);
        font-weight: 600;
        cursor: pointer;
        flex: 1;
        transition: background 0.2s;
    }

    .btn-logout-cancel:hover {
        background: var(--color-border);
    }

    .btn-logout-confirm {
        padding: var(--spacing-xs) var(--spacing-sm);
        border: none;
        border-radius: var(--radius-sm);
        background: var(--color-danger);
        color: var(--color-on-primary);
        font-weight: 600;
        cursor: pointer;
        flex: 1;
        transition: background 0.2s;
        box-shadow: 0 4px 12px rgba(229, 57, 53, 0.3);
    }

    .btn-logout-confirm:hover {
        background: var(--color-danger-dark);
        box-shadow: 0 6px 16px rgba(229, 57, 53, 0.4);
    }

    /* 編集・削除ボタンのコンテナ */
    .post-actions {
        display: flex;
        gap: 0.5rem;
        margin-top: 0.5rem;
    }

    /* PC表示での編集・削除ボタン右寄せ */
    @media (min-width: 769px) {
        .post-footer {
            justify-content: flex-end;
        }
    }

    /* レスポンシブ対応 */
    @media (max-width: 768px) {
        .notification-btn {
            width: 36px;
            height: 36px;
        }

        .notification-btn .material-icons {
            font-size: 18px;
        }

        .notification-badge {
            min-width: 16px;
            height: 16px;
            font-size: 0.65rem;
            top: -1px;
            right: -1px;
        }

        /* ヘッダー調整はlayout.cssで対応済みだが、微調整が必要な場合はここに記述 */

        .user-section {
            gap: var(--spacing-xs);
        }

        .user-info {
            padding: var(--spacing-xs) var(--spacing-sm);
            gap: var(--spacing-xs);
        }

        .badge {
            font-size: var(--font-xs);
            padding: var(--spacing-xs) var(--spacing-sm);
        }

        .user-name {
            font-size: var(--font-xs);
        }

        .logout-btn,
        .menu-btn {
            width: 36px;
            height: 36px;
        }

        .logout-btn .material-icons,
        .menu-btn .material-icons {
            font-size: 18px;
        }

        .dropdown-menu {
            width: 220px;
            right: 0;
        }

        .container {
            padding: var(--spacing-xs) var(--spacing-sm);
        }

        .tabs {
            margin-bottom: var(--spacing-xs);
            padding: 0 var(--spacing-xs);
            gap: var(--spacing-xs);
        }

        .tab {
            padding: var(--spacing-xs) var(--spacing-sm);
            min-height: 44px;
            flex: 1;
            text-align: center;
        }

        .action-bar {
            flex-direction: column;
            gap: var(--spacing-xs);
            align-items: stretch;
            margin-bottom: var(--spacing-xs);
        }

        .action-bar h2 {
            font-size: var(--font-sm);
            margin: 0;
        }

        .btn {
            width: 100%;
            padding: var(--spacing-xs) var(--spacing-sm);
            font-size: var(--font-xs);
            min-height: 48px;
        }

        .posts-list {
            gap: var(--spacing-xs);
        }

        .post-card {
            padding: var(--spacing-xs) var(--spacing-sm);
        }

        .post-header {
            flex-direction: column;
            gap: var(--spacing-xs);
            margin-bottom: var(--spacing-xs);
        }

        .post-title {
            font-size: var(--font-sm);
            line-height: 1.4;
            margin-bottom: var(--spacing-xs);
        }

        .post-info {
            font-size: var(--font-xs);
            flex-direction: column;
            align-items: flex-start;
        }

        .post-info-item {
            font-size: var(--font-xs);
        }

        .post-status {
            align-self: flex-start;
        }

        .status-badge {
            padding: var(--spacing-xs) var(--spacing-sm);
            font-size: var(--font-xs);
        }

        .post-content {
            font-size: var(--font-xs);
            line-height: 1.75;
            margin-bottom: var(--spacing-xs);
        }

        .post-content.collapsed {
            max-height: 4em;
        }

        .read-more-container {
            margin-top: var(--spacing-xs);
        }

        .read-more-btn {
            font-size: var(--font-xs);
            padding: var(--spacing-xs) var(--spacing-sm);
            width: 100%;
            justify-content: center;
        }

        .read-more-btn .material-icons {
            font-size: 14px;
        }

        .post-attachments {
            margin-top: var(--spacing-xs);
            padding-top: var(--spacing-xs);
            gap: var(--spacing-xs);
        }

        .attachment-item {
            padding: var(--spacing-xs) var(--spacing-sm);
            font-size: var(--font-xs);
            font-weight: 600;
            cursor: pointer;
            flex: 1;
        }

        /* ヘッダー調整はlayout.cssで対応済みだが、微調整が必要な場合はここに記述 */

        .user-section {
            gap: var(--spacing-xs);
        }

        .user-info {
            padding: var(--spacing-xs) var(--spacing-sm);
            gap: var(--spacing-xs);
        }

        .badge {
            font-size: var(--font-xs);
            padding: var(--spacing-xs) var(--spacing-sm);
        }

        .user-name {
            font-size: var(--font-xs);
        }

        .logout-btn,
        .menu-btn {
            width: 36px;
            height: 36px;
        }

        .logout-btn .material-icons,
        .menu-btn .material-icons {
            font-size: 18px;
        }

        .dropdown-menu {
            width: 220px;
            right: 0;
        }

        .container {
            padding: var(--spacing-xs) var(--spacing-sm);
        }

        .tabs {
            margin-bottom: var(--spacing-xs);
            padding: 0 var(--spacing-xs);
            gap: var(--spacing-xs);
        }

        .tab {
            padding: var(--spacing-xs) var(--spacing-sm);
            font-size: var(--font-xs);
            min-height: 44px;
            flex: 1;
            text-align: center;
        }

        .action-bar {
            flex-direction: column;
            gap: var(--spacing-xs);
            align-items: stretch;
            margin-bottom: var(--spacing-xs);
        }

        .action-bar h2 {
            font-size: var(--font-xs);
            margin: 0;
        }

        .btn {
            width: 100%;
            padding: var(--spacing-xs) var(--spacing-sm);
            font-size: var(--font-xs);
            min-height: 48px;
        }

        .posts-list {
            gap: var(--spacing-xs);
        }

        .post-card {
            padding: var(--spacing-xs) var(--spacing-sm);
        }

        .post-header {
            flex-direction: column;
            gap: var(--spacing-xs);
            margin-bottom: var(--spacing-xs);
        }

        .post-title {
            font-size: var(--font-xs);
            line-height: 1.4;
            margin-bottom: var(--spacing-xs);
        }

        .post-info {
            font-size: var(--font-xs);
            gap: var(--spacing-xs);
            flex-direction: column;
            align-items: flex-start;
        }

        .post-info-item {
            font-size: var(--font-xs);
        }

        .post-status {
            align-self: flex-start;
        }

        .status-badge {
            padding: var(--spacing-xs) var(--spacing-sm);
            font-size: var(--font-xs);
        }

        .post-content {
            font-size: var(--font-xs);
            line-height: 1.75;
            margin-bottom: var(--spacing-xs);
        }

        .post-content.collapsed {
            max-height: 4em;
        }

        .read-more-container {
            margin-top: var(--spacing-xs);
        }

        .read-more-btn {
            font-size: var(--font-xs);
            padding: var(--spacing-xs) var(--spacing-sm);
            width: 100%;
            justify-content: center;
        }

        .read-more-btn .material-icons {
            font-size: 14px;
        }

        .post-attachments {
            margin-top: var(--spacing-xs);
            padding-top: var(--spacing-xs);
            gap: var(--spacing-xs);
        }

        .attachment-item {
            padding: var(--spacing-xs) var(--spacing-sm);
            font-size: var(--font-xs);
            min-height: 44px;
            width: 100%;
            justify-content: flex-start;
        }

        .post-footer {
            flex-direction: column;
            gap: var(--spacing-xs);
            align-items: stretch;
            margin-top: var(--spacing-xs);
            padding-top: var(--spacing-xs);
        }

        .read-status {
            font-size: var(--font-xs);
        }

        /* 既読ボタン（直接の子要素） */
        .post-footer>.btn-secondary {
            width: 100%;
            padding: var(--spacing-xs) var(--spacing-sm);
            font-size: var(--font-xs);
            min-height: 44px;
        }

        /* 管理者用ボタン（グループ化されたボタン） */
        .post-footer div .btn {
            width: auto;
            flex: 1;
            white-space: nowrap;
            padding: var(--spacing-xs) var(--spacing-sm);
        }

        /* 通知モーダルのレスポンシブ */
        .notification-modal.active {
            align-items: flex-start;
            justify-content: center;
            padding-top: 0;
        }

        .notification-modal-content {
            width: 100%;
            max-width: 100%;
            max-height: 85vh;
            border-radius: 0 0 16px 16px;
            margin-top: 0;
            transform: translateY(-100%);
            transition: transform 0.3s ease-out;
        }

        .notification-modal.active .notification-modal-content {
            transform: translateY(0);
        }

        .notification-modal-header {
            padding: var(--spacing-xs) var(--spacing-sm);
        }

        .notification-modal-header h2 {
            font-size: var(--font-xs);
        }

        .notification-modal-body {
            padding: var(--spacing-xs) var(--spacing-sm);
        }

        .notification-item {
            padding: var(--spacing-xs) var(--spacing-sm);
        }

        .notification-item-icon {
            width: 36px;
            height: 36px;
        }

        .notification-item-icon .material-icons {
            font-size: 18px;
        }

        .notification-item-title {
            font-size: var(--font-xs);
        }

        .notification-item-message {
            font-size: var(--font-xs);
        }
    }

    /* ログアウトボタン（ヘッダー用） */
    .logout-btn {
        background: none;
        border: none;
        color: white;
    }

    /* タブ切り替えアニメーション */
    .posts-container {
        animation: fadeIn 0.3s ease-in-out;
    }

    /* fadeIn keyframes removed - defined in common.css */

    /* タブインジケーター(下線)のアニメーション */
    .tabs {
        position: relative;
    }

    .tab-indicator {
        position: absolute;
        bottom: 0;
        height: 3px;
        background: var(--color-primary);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        border-radius: 3px 3px 0 0;
    }

    /* タブのホバーエフェクト強化 */
    .tab {
        transition: all 0.2s ease;
    }

    .tab:hover:not(.active):not(.disabled) {
        background: rgba(253, 124, 33, 0.05);
        transform: translateY(-2px);
    }

    .tab:active:not(.disabled) {
        transform: translateY(0);
    }

    /* アクティブタブのアニメーション */
    .tab.active {
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    /* 通知モーダルヘッダーのトグルボタン */
    .notification-modal-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: var(--spacing-xs) var(--spacing-sm);
        border-bottom: 1px solid var(--color-border);
    }

    .notification-header-left {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .notification-toggle-container {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .notification-toggle-label {
        font-size: var(--font-xs);
        color: var(--color-text-light);
        white-space: nowrap;
    }


    /* タブ切り替え時のアニメーション */
    .tab-content {
        /* アニメーション設定: 名前 時間 イージング */
        animation: fadeInUp 0.3s ease-out;
    }

    /* 下からフワッと現れる動き */
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(10px);
            /* 10px下から開始 */
        }

        to {
            opacity: 1;
            transform: translateY(0);
            /* 定位置へ */
        }
    }

    /* アニメーション定義 */
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(10px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* アニメーション適用クラス */
    .animate-fade-in {
        animation: fadeInUp 0.3s ease-out forwards;
    }

    /* ブックマークボタン */
    .bookmark-btn {
        background: none;
        border: none;
        font-size: var(--font-xs);
        cursor: pointer;
        padding: var(--spacing-xs) var(--spacing-sm);
        transition: transform 0.2s;
        color: #999;
    }

    .bookmark-btn.active {
        color: #ff6b6b;
    }

    .bookmark-btn:hover {
        transform: scale(1.2);
    }

    /* ハンバーガーメニュー */
    .hamburger-menu {
        position: relative;
    }

    .menu-dropdown {
        position: absolute;
        top: 100%;
        right: 0;
        background: white;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        min-width: 200px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s;
        z-index: 1000;
        margin-top: var(--spacing-xs);
    }

    .menu-dropdown.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .menu-item {
        padding: 1rem 1.25rem;
        border-bottom: 1px solid #f0f0f0;
        cursor: pointer;
        transition: background 0.2s;
        display: flex;
        align-items: center;
        gap: 0.75rem;
        font-size: var(--font-md);
        font-weight: 500;
    }

    .menu-item:last-child {
        border-bottom: none;
    }

    .menu-item:hover {
        background: #f8f9fa;
    }

    .menu-item .material-icons {
        font-size: 20px;
        color: #757575;
    }

    .menu-item.danger {
        color: #dc3545;
    }

    .bookmark-empty {
        text-align: center;
        padding: var(--spacing-xs) var(--spacing-sm);
        color: #999;
    }

    /* 画像グリッドレイアウト */
    .attachments-grid-1 {
        display: grid;
        gap: 8px;
        margin-top: var(--spacing-xs);
    }

    .attachments-grid-1 .attachment-image {
        width: 100%;
        aspect-ratio: 16/9;
        object-fit: cover;
        border-radius: 8px;
        cursor: pointer;
        transition: transform 0.2s;
    }

    .attachments-grid-2 {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        margin-top: var(--spacing-xs);
    }

    .attachments-grid-2 .attachment-image {
        width: 100%;
        aspect-ratio: 1;
        object-fit: cover;
        border-radius: 8px;
        cursor: pointer;
        transition: transform 0.2s;
    }

    .attachments-grid-3 {
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 1fr 1fr;
        gap: 8px;
        margin-top: var(--spacing-xs);
    }

    .attachments-grid-3 .attachment-image:first-child {
        grid-column: 1 / 3;
        aspect-ratio: 16/9;
    }

    .attachments-grid-3 .attachment-image {
        width: 100%;
        aspect-ratio: 1;
        object-fit: cover;
        border-radius: 8px;
        cursor: pointer;
        transition: transform 0.2s;
    }

    .attachments-grid-4 {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        margin-top: var(--spacing-xs);
    }

    .attachments-grid-4 .attachment-image {
        width: 100%;
        aspect-ratio: 1;
        object-fit: cover;
        border-radius: 8px;
        cursor: pointer;
        transition: transform 0.2s;
    }

    .attachment-image:hover {
        transform: scale(1.02);
    }

    /* ========================================
    ライトボックス
    ======================================== */

    .lightbox-modal {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.9);
        z-index: 9999;
        align-items: center;
        justify-content: center;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .lightbox-modal.active {
        display: flex;
        opacity: 1;
    }

    .lightbox-content {
        position: relative;
        max-width: 90%;
        max-height: 90%;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .lightbox-image {
        max-width: 100%;
        max-height: 90vh;
        object-fit: contain;
        border-radius: 8px;
    }

    .lightbox-close {
        position: absolute;
        top: var(--spacing-xs);
        right: var(--spacing-xs);
        background: rgba(255, 255, 255, 0.9);
        border: none;
        border-radius: 50%;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        z-index: 10000;
        transition: background 0.2s;
    }

    .lightbox-close:hover {
        background: white;
    }

    .lightbox-close .material-icons {
        font-size: var(--font-xs);
        color: #333;
    }

    .post-status {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .post-status .bookmark-btn {
        background: transparent;
        border: none;
        padding: var(--spacing-xs);
        cursor: pointer;
        color: var(--color-text-lighter);
        transition: color 0.2s;
    }

    .post-status .bookmark-btn:hover {
        color: var(--color-primary);
    }

    .post-status .bookmark-btn.active {
        color: var(--color-primary);
    }

    .post-status .bookmark-btn .material-icons {
        font-size: var(--font-lg);
    }

    .post-header {
        position: relative;
        display: flex;
        flex-direction: column;
        gap: var(--spacing-xs);
        padding-right: 80px;
    }

    .post-title-row {
        display: flex;
        align-items: center;
    }

    .post-title {
        font-size: 1.1rem;
        font-weight: 600;
        flex: 1;
        min-width: 0;
    }

    .post-status {
        position: absolute;
        top: 0;
        right: 0;
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .status-badge.clickable {
        cursor: pointer;
        border: 2px solid var(--color-primary);
        background: white;
        color: var(--color-primary);
        font-weight: 600;
        border-radius: 8px;
        transition: all 0.2s;
    }

    .status-badge.clickable:hover {
        background: var(--color-primary);
        color: white;
        transform: scale(1.05);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    }

    .status-badge.clickable:active {
        transform: scale(0.95);
    }

    /* 既読状態のバッジ */
    .status-badge.status-read {
        background: #f5f5f5;
        color: #9e9e9e;
        border: 2px solid #e0e0e0;
        cursor: default;
    }

    .post-card {
        margin-bottom: 1rem;
    }

    /* 画像読み込み中のプレースホルダーアニメーション */
    .attachment-image {
        background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
        background-size: 200% 100%;
        animation: skeleton-loading 1.5s ease-in-out infinite;
        min-height: 200px;
        /* プレースホルダーの最小高さ */
    }

    .attachment-image.loaded {
        background: none;
        animation: none;
        min-height: auto;
    }

    @keyframes skeleton-loading {
        0% {
            background-position: 200% 0;
        }

        100% {
            background-position: -200% 0;
        }
    }

    /* ========================================
    トースト通知
    ======================================== */

    .toast {
        position: fixed;
        bottom: var(--spacing-xs);
        left: 50%;
        transform: translateX(-50%) translateY(100px);
        padding: var(--spacing-xs) var(--spacing-sm);
        border-radius: 8px;
        color: white;
        font-size: var(--font-xs);
        opacity: 0;
        transition: all 0.3s ease;
        z-index: 10000;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }

    .toast.show {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    .toast-warning {
        background: #ff9800;
    }

    .toast-success {
        background: #FD7C21;
    }

    .toast-info {
        background: #2196f3;
    }

    /* スナックバー */
    .snackbar {
        position: fixed;
        bottom: var(--spacing-xs);
        left: 50%;
        transform: translateX(-50%) translateY(100px);
        background: #323232;
        color: white;
        padding: var(--spacing-xs) var(--spacing-sm);
        border-radius: 4px;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 8px;
        opacity: 0;
        transition: all 0.3s ease;
        z-index: 10000;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }

    .snackbar.show {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    .snackbar-message {
        font-size: var(--font-xs);
    }

    .snackbar-action {
        background: none;
        border: none;
        color: #FD7C21;
        font-size: var(--font-xs);
        font-weight: 600;
        cursor: pointer;
        padding: 0;
        text-transform: uppercase;
    }

    .snackbar-action:hover {
        color: #66bb6a;
    }

    /* ========================================
    スケルトンスクリーン
    ======================================== */

    .skeleton-post {
        background: var(--skeleton-bg);
        border-radius: 12px;
        padding: var(--spacing-xs) var(--spacing-sm);
        margin-bottom: var(--spacing-xs);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }

    .skeleton-line {
        height: 16px;
        background: linear-gradient(90deg, var(--skeleton-start) 25%, var(--skeleton-mid) 50%, var(--skeleton-end) 75%);
        background-size: 200% 100%;
        animation: skeleton-loading 1.5s ease-in-out infinite;
        border-radius: 4px;
        margin-bottom: var(--spacing-xs);
    }

    .skeleton-line.title {
        width: 60%;
        height: 20px;
    }

    .skeleton-line.content {
        width: 100%;
    }

    .skeleton-line.short {
        width: 40%;
    }

    /* ========================================
    アニメーション
    ======================================== */

    .bookmark-btn {
        transition: transform var(--transition-normal);
    }

    .bookmark-btn:active {
        transform: scale(0.9);
    }

    .bookmark-btn.active .material-icons {
        animation: bookmark-pop var(--transition-normal);
    }

    @keyframes bookmark-pop {
        0% {
            transform: scale(1);
        }

        50% {
            transform: scale(1.3);
        }

        100% {
            transform: scale(1);
        }
    }

    /* 既読バッジのアニメーション */
    .status-badge.clickable {
        transition: transform var(--transition-normal);
    }

    .status-badge.clickable:active {
        transform: scale(0.95);
    }

    /* ボタンホバー時の微細な動き */
    .btn {
        transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    }

    .btn:hover {
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(253, 124, 33, 0.3);
    }

    .toast-error {
        background: #f44336;
    }


    /* Dark Mode Overrides for Specific Elements (Global) */
    html.theme-dark .tab {
        background: var(--color-bg-white);
        color: var(--color-text-light);
        border-color: var(--color-border);
    }

    html.theme-dark .tab.active {
        background: var(--color-primary);
        color: var(--color-on-primary);
        border-color: var(--color-primary);
    }

    html.theme-dark .notification-badge {
        background: #d32f2f;
        color: white;
        border: 1px solid #1e1e1e;
    }

    html.theme-dark .notification-item-count {
        background: #c62828;
    }

    html.theme-dark .status-badge.status-new {
        background: rgba(253, 124, 33, 0.15);
        color: #ffb74d;
        border: 1px solid #FD7C21;
    }

    html.theme-dark .status-badge.status-new:hover {
        background: #FD7C21;
        color: white;
    }

    /* ダークモードの既読バッジ */
    html.theme-dark .status-badge.status-read {
        background: #2a2a2a;
        color: #757575;
        border: 2px solid #424242;
    }

    /* Read More Button & Gradient Dark Mode */
    html.theme-dark .post-content.collapsed::after {
        background: linear-gradient(to bottom, transparent, #121212);
    }

    html.theme-dark .read-more-btn {
        background: rgba(30, 30, 30, 0.95);
        color: #81c784;
        /* Light Green for visibility */
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    }

    html.theme-dark .read-more-btn:hover {
        background: rgba(50, 50, 50, 1);
        color: white;
        /* White for hover */
    }