/* ============================================
   admin.css - 后台管理专用样式（全屏适配 · 参照 ERP 风格美化）
   布局：深蓝侧边栏 + 浅灰内容区，左右分栏全屏
   移动端：侧边栏自动隐藏，抽屉式展开（顶部汉堡按钮）
   包含：基础布局、卡片管理、文章、排行、
   栏目、账号、文件仓库、本地文件选择等
   ============================================ */

:root {
    --color-bg: #f5f6fa;
    --color-surface: #ffffff;
    --color-text: #1f2430;
    --color-text-secondary: #6b7280;
    --color-border: #e8ebf2;
    --color-primary: #2e6bef;
    --color-primary-hover: #1f5be0;
    --color-primary-soft: #eaf1ff;
    --color-danger: #dc2626;
    --color-danger-hover: #b91c1c;
    --color-success: #16a34a;
    --color-success-hover: #15803d;
    --sidebar-bg: #1f2a4a;
    --sidebar-bg-deep: #182240;
    --sidebar-text: #9aa5c3;
    --sidebar-text-hover: #ffffff;
    --sidebar-active: #2e6bef;
    --sidebar-width: 240px;
    --shadow-sm: 0 1px 3px rgba(31, 42, 74, 0.06);
    --shadow-md: 0 4px 20px rgba(31, 42, 74, 0.08);
    --shadow-lg: 0 8px 40px rgba(31, 42, 74, 0.14);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* ============================================
   移动端顶部栏（≤768px 显示）
============================================ */
.mobile-topbar {
    display: none;
    position: sticky;
    top: 0;
    z-index: 60;
    height: 52px;
    align-items: center;
    gap: 12px;
    padding: 0 14px;
    background: var(--sidebar-bg);
    color: #fff;
    box-shadow: 0 2px 10px rgba(24, 34, 64, 0.25);
}
.topbar-menu-btn {
    width: 38px;
    height: 38px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}
.topbar-menu-btn:hover { background: rgba(255, 255, 255, 0.2); }
.topbar-menu-btn:active { transform: scale(0.95); }
.topbar-title { font-size: 16px; font-weight: 600; letter-spacing: 0.5px; flex: 1; }
.topbar-view {
    color: rgba(255, 255, 255, 0.85);
    font-size: 13px;
    text-decoration: none;
    padding: 6px 12px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 999px;
    transition: var(--transition);
    flex-shrink: 0;
}
.topbar-view:hover { background: rgba(255, 255, 255, 0.12); color: #fff; }

/* 遮罩层（移动端侧边栏展开时显示） */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    z-index: 55;
    opacity: 0;
    transition: opacity 0.25s ease;
}
.sidebar-overlay.visible { opacity: 1; }

/* ============================================
   布局：左右分栏，全屏
============================================ */
.admin-wrapper {
    display: flex;
    align-items: stretch;
    min-height: 100vh;
    background: var(--color-bg);
}

.admin-sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--sidebar-bg) 0%, var(--sidebar-bg-deep) 100%);
    padding: 24px 16px 28px;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.18) transparent;
}
.admin-sidebar::-webkit-scrollbar { width: 5px; }
.admin-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.18); border-radius: 3px; }

.admin-sidebar .brand {
    font-weight: 600;
    font-size: 19px;
    letter-spacing: -0.3px;
    margin-bottom: 6px;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 8px;
}
.admin-sidebar .brand span { font-weight: 600; }
.admin-sidebar .brand-link .view-link {
    margin-left: auto;
    font-size: 12px;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
}
.admin-sidebar .brand-link .view-link:hover { color: #ffffff; }
.admin-sidebar .user-info {
    font-size: 12px;
    color: var(--sidebar-text);
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 14px;
}
.admin-sidebar .user-info strong { color: #ffffff; font-weight: 600; }

.nav-group-label {
    font-size: 11px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: rgba(154, 165, 195, 0.65);
    padding: 8px 12px 6px;
    user-select: none;
}

.nav-items { display: block; }

.nav-item {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    color: var(--sidebar-text);
    border-radius: var(--radius-sm);
    margin-bottom: 3px;
    font-size: 14px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}
.nav-item:hover { background: rgba(255, 255, 255, 0.08); color: var(--sidebar-text-hover); }
.nav-item.active {
    background: var(--sidebar-active);
    color: #fff;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(46, 107, 239, 0.4);
}
.nav-item .icon { margin-right: 10px; font-size: 15px; width: 20px; text-align: center; }

.logout-btn {
    margin-top: auto;
    padding: 10px 14px;
    background: transparent;
    color: #ff8f8f;
    border: 1px solid rgba(255, 143, 143, 0.35);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    width: 100%;
    transition: var(--transition);
    text-align: center;
}
.logout-btn:hover { background: var(--color-danger); border-color: var(--color-danger); color: #fff; }

.admin-main {
    flex: 1;
    min-width: 0;
    padding: 32px 40px 48px;
    overflow-x: hidden;
}

/* 页头（参照 ERP：小标签 + 大标题 + 描述） */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 24px;
    gap: 12px;
    flex-wrap: wrap;
}
.page-heading { display: block; }
.page-eyebrow {
    display: block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: #9aa3b5;
    margin-bottom: 6px;
}
.page-header h1 {
    font-weight: 700;
    font-size: 26px;
    letter-spacing: -0.3px;
    color: var(--color-text);
    margin: 0;
}
.page-desc {
    margin: 6px 0 0;
    font-size: 13px;
    color: var(--color-text-secondary);
}
.page-header .view-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}
.page-header .view-link:hover { color: var(--color-primary); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ============================================
   表单卡片
============================================ */
.form-card {
    background: var(--color-surface);
    padding: 26px 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    margin-bottom: 24px;
}
.form-card h3 { font-weight: 600; font-size: 16px; margin-bottom: 20px; }

.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--color-text);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 9px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: #fafbfd;
    transition: var(--transition);
    box-sizing: border-box;
    max-width: 100%;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #fff;
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.form-group textarea { min-height: 80px; resize: vertical; }

/* 复选框/单选框不参与通用输入框样式（修复手机端开关错位拉伸） */
.form-group input[type="checkbox"],
.form-group input[type="radio"] {
    width: 18px;
    height: 18px;
    min-width: 18px;
    padding: 0;
    margin: 0;
    border: none;
    background: transparent;
    box-shadow: none;
    accent-color: var(--color-text);
    flex-shrink: 0;
    cursor: pointer;
}
.form-group .row {
    display: flex;
    gap: 12px;
}
.form-group .row > * { flex: 1; }
.form-group .hint {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-weight: 400;
}
.form-divider {
    margin: 20px 0;
    border: none;
    border-top: 1px solid var(--color-border);
}

/* 图片上传 */
.image-upload-wrapper {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}
.image-upload-wrapper .file-wrapper {
    display: flex;
    gap: 8px;
    align-items: center;
    flex: 1 1 300px;
    min-width: 200px;
    flex-wrap: wrap;
}
.image-upload-wrapper .file-wrapper input[type="file"] {
    flex: 1;
    padding: 6px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: #fafbfd;
    min-width: 150px;
}
.image-upload-wrapper .or-text {
    color: var(--color-text-secondary);
    font-size: 13px;
    padding: 0 4px;
}
.image-upload-wrapper input[type="text"] {
    flex: 2;
    min-width: 200px;
}

.image-preview-container {
    margin-top: 10px;
    display: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 8px;
    background: #fafbfd;
    text-align: center;
}
.image-preview-container img {
    max-width: 100%;
    max-height: 200px;
    object-fit: contain;
    border-radius: 4px;
}
.image-preview-container .preview-info {
    margin-top: 4px;
    font-size: 12px;
    color: var(--color-text-secondary);
}

/* 颜色选择器 */
.color-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 4px 0;
}
.color-palette .color-option {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    position: relative;
    flex-shrink: 0;
}
.color-palette .color-option:hover { transform: scale(1.1); }
.color-palette .color-option.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--color-primary);
}
.color-palette .color-option .check {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255,255,255,0.9);
    font-size: 14px;
    font-weight: 700;
    display: none;
}
.color-palette .color-option.active .check { display: block; }
.color-palette .color-option .check.dark { color: rgba(0,0,0,0.6); }

/* 预设颜色（已由 JS 渲染，但保留后备） */
.color-option[data-color="#333333"] { background: #333333; }
.color-option[data-color="#8A2BE2"] { background: #8A2BE2; }
.color-option[data-color="#5F9EA0"] { background: #5F9EA0; }
.color-option[data-color="#00008B"] { background: #00008B; }
.color-option[data-color="#008000"] { background: #008000; }
.color-option[data-color="#FF0000"] { background: #FF0000; }
.color-option[data-color="#9ACD32"] { background: #9ACD32; }
.color-option[data-color="#FFFF00"] { background: #FFFF00; }
.color-option[data-color="#FF6347"] { background: #FF6347; }
.color-option[data-color="#800080"] { background: #800080; }
.color-option[data-color="#F0F8FF"] { background: #F0F8FF; border-color: #d1d5db; }
.color-option[data-color="#FF69B4"] { background: #FF69B4; }

/* 按钮 */
.btn {
    padding: 8px 20px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: 0 2px 8px rgba(46, 107, 239, 0.3); }
.btn-primary:hover { background: var(--color-primary-hover); box-shadow: 0 4px 14px rgba(46, 107, 239, 0.4); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: var(--color-danger-hover); }
.btn-outline { background: #fff; color: var(--color-text); border: 1px solid var(--color-border); }
.btn-outline:hover { background: #f4f6fb; border-color: #d5dae6; }
.btn-top { background: #f59e0b; color: #fff; }
.btn-top:hover { background: #d97706; }
.btn-top-cancel { background: #6b7280; color: #fff; }
.btn-top-cancel:hover { background: #4b5563; }
.btn-sm { padding: 4px 12px; font-size: 12px; }
.btn-reset { background: #f1f3f8; color: var(--color-text); margin-left: 8px; }
.btn-reset:hover { background: #e5e8f0; }

/* 卡片列表 */
.card-list {
    background: var(--color-surface);
    padding: 24px 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}
.card-list h3 { font-weight: 600; font-size: 16px; margin-bottom: 16px; }
.card-list h3 span { color: var(--color-text-secondary); font-weight: 400; }

.card-item {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    gap: 14px;
}
.card-item:last-child { border-bottom: none; }
.card-item img {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    background: #f0f2f7;
}
.card-item .info { flex: 1; min-width: 0; }
.card-item .info .title { font-weight: 500; font-size: 14px; }
.card-item .info .meta { font-size: 12px; color: var(--color-text-secondary); margin-top: 2px; }
.card-item .info .meta .badge-preview {
    display: inline-block;
    padding: 1px 10px;
    border-radius: 3px;
    font-size: 11px;
    color: #fff;
    margin-right: 4px;
}
.card-item .actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
    flex-wrap: wrap;
}

/* ============================================================
   回收站（内容管理 → 回收站）
   ============================================================ */
.recycle-filter-select {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 14px;
    background: #fafbfc;
    color: var(--color-text);
    min-width: 140px;
    cursor: pointer;
}
.recycle-filter-select:focus {
    outline: none;
    border-color: var(--color-text);
    box-shadow: 0 0 0 3px rgba(26, 26, 26, 0.12);
}
.recycle-thumb {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    background: #f0f2f7;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.recycle-thumb img {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--radius-sm);
}
.recycle-no-thumb { font-size: 22px; opacity: 0.5; }
.recycle-badge {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 3px;
    font-size: 11px;
    background: #eef1f6;
    color: var(--color-text-secondary);
    margin-right: 4px;
}
.recycle-badge-cat { background: #f3f4f6; }

@media (max-width: 768px) {
    .recycle-filter-select { min-width: 120px; font-size: 16px; }
    .recycle-item { flex-wrap: wrap; }
    .recycle-item .actions { width: 100%; justify-content: flex-end; }
}

/* 管理员列表 */
.admin-item {
    display: flex;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
    gap: 12px;
}
.admin-item .info { flex: 1; }
.admin-item .actions { display: flex; gap: 6px; flex-shrink: 0; }

/* 栏目管理 */
.category-item {
    display: flex;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
    gap: 12px;
}
.category-item .info { flex: 1; }
.category-item .info .name { font-weight: 500; }
.category-item .info .url { font-size: 12px; color: var(--color-text-secondary); }
.category-item .actions { display: flex; gap: 6px; flex-shrink: 0; }
.category-item.is-hidden .info .name { color: var(--color-text-secondary); }
.category-item .hidden-tag {
    display: inline-block;
    margin-left: 6px;
    padding: 1px 8px;
    font-size: 11px;
    font-weight: 400;
    color: #9ca3af;
    background: #f3f4f6;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    vertical-align: middle;
}

/* ============================================================
   开关（可见 / 隐藏 切换）
   ============================================================ */
.switch-group { margin-top: 2px; }
.switch {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
    margin: 0;
}
/* 提高优先级：压制 .form-group label 的 display:block（否则轨道 span 退化为
   inline，宽高失效，只剩一个圆点） */
.form-group label.switch,
.checkbox-group label.switch {
    display: inline-flex;
    margin-bottom: 0;
}
.switch input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    margin: 0;
}
.switch .switch-track {
    position: relative;
    display: inline-block; /* 兜底：即使父级被改成 block，宽高也生效 */
    flex: none;
    width: 44px;
    height: 24px;
    border-radius: 999px;
    background: #d1d5db;
    transition: background 0.2s ease;
}
.switch .switch-track::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
    transition: transform 0.2s ease;
}
.switch input[type="checkbox"]:checked + .switch-track { background: var(--color-primary); }
.switch input[type="checkbox"]:checked + .switch-track::after { transform: translateX(20px); }
.switch input[type="checkbox"]:focus-visible + .switch-track { box-shadow: 0 0 0 3px rgba(26, 26, 26, 0.15); }
.switch .switch-label {
    font-size: 13px;
    font-weight: 400;
    color: var(--color-text);
}
.switch .switch-label .hint { font-weight: 400; color: var(--color-text-secondary); }
/* 列表内的迷你开关 */
.switch-sm .switch-track { width: 36px; height: 20px; }
.switch-sm .switch-track::after { width: 16px; height: 16px; }
.switch-sm input[type="checkbox"]:checked + .switch-track::after { transform: translateX(16px); }

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--color-text-secondary);
}
.empty-state .icon { font-size: 32px; display: block; margin-bottom: 8px; }

/* 分页 */
.admin-pagination {
    margin-top: 16px;
    display: flex;
    justify-content: center;
    gap: 4px;
    flex-wrap: wrap;
}
.admin-pagination .page-btn {
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    color: var(--color-text);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}
.admin-pagination .page-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.admin-pagination .page-btn.disabled { opacity: 0.3; cursor: not-allowed; }

/* 登录页 */
.login-box {
    max-width: 400px;
    margin: 80px auto;
    background: var(--color-surface);
    padding: 40px 44px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}
.login-box h2 {
    text-align: center;
    font-weight: 600;
    font-size: 24px;
    margin-bottom: 28px;
    letter-spacing: -0.3px;
    color: var(--color-text);
}
.login-box input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 15px;
    background: #fafbfd;
    transition: var(--transition);
    box-sizing: border-box;
}
.login-box input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #fff;
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.login-box button {
    width: 100%;
    padding: 12px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    margin-top: 4px;
}
.login-box button:hover { background: var(--color-primary-hover); }
.login-box .error {
    color: var(--color-danger);
    text-align: center;
    margin-top: 14px;
    display: none;
    font-size: 14px;
}

/* 网格布局 */
.admin-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 24px;
}

/* 复选框组 */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
}
.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin: 0;
    flex-shrink: 0;
    cursor: pointer;
    accent-color: var(--color-primary);
}
.checkbox-group label {
    margin: 0;
    cursor: pointer;
    font-weight: 400;
    font-size: 13px;
}

/* Toast 提示 */
.admin-toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: #1f2430;
    color: #fff;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    z-index: 9999;
    max-width: 90%;
    text-align: center;
}

/* 页脚 */
.admin-footer {
    margin-top: 40px;
    padding: 20px 0 10px;
    border-top: 1px solid var(--color-border);
    text-align: center;
    font-size: 13px;
    color: var(--color-text-secondary);
}
.admin-footer a {
    color: var(--color-text-secondary);
    text-decoration: none;
}
.admin-footer a:hover { color: var(--color-primary); }

/* ============================================
   文件仓库 & 本地文件选择器样式
   ============================================ */

/* 文件列表项（继承 .card-item） */
#fileListContainer .card-item .info .title {
    font-weight: 500;
    font-size: 14px;
}
#fileListContainer .card-item .info .meta {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

/* 文件选择器模态框（覆盖层） */
.file-picker-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.file-picker-box {
    background: #fff;
    padding: 24px;
    border-radius: 12px;
    max-width: 700px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
}
.file-picker-box h3 {
    margin-bottom: 16px;
    font-weight: 600;
    font-size: 20px;
}
.file-picker-box .card-item {
    cursor: pointer;
}
.file-picker-box .card-item:hover {
    background: #f7f9fd;
}
.file-picker-box .card-item .select-file-btn {
    pointer-events: auto;
}
.file-picker-box .close-picker-btn {
    margin-top: 16px;
    text-align: right;
}

/* 本地文件选项区域 */
#localLinkOptions .form-group input[readonly] {
    background: #f5f6fa;
    cursor: default;
}
#localLinkOptions #selectedFileInfo {
    margin-top: 6px;
    font-size: 13px;
    color: #6b7280;
}
#localLinkOptions #selectedFileInfo .file-name {
    font-weight: 500;
    color: var(--color-text);
}

/* 文件上传模态框内的下拉框增强 */
#uploadFileCategory {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 6px;
    background: #fff;
    font-size: 14px;
}

/* 图片上传组件在手机端优化 */
@media (max-width: 768px) {
    .image-upload-wrapper .file-wrapper {
        flex: 1 1 auto;
        min-width: 0;
    }
    .image-upload-wrapper input[type="text"] {
        min-width: 0;
        width: 100%;
    }
    .image-upload-wrapper .or-text {
        padding: 0 6px;
    }
}

/* ============================================
   响应式 - 平板及以下
============================================ */
@media (max-width: 1024px) {
    .admin-grid {
        grid-template-columns: 1fr 1.5fr;
        gap: 20px;
    }
    :root { --sidebar-width: 200px; }
    .admin-sidebar { padding: 20px 12px 24px; }
    .admin-main { padding: 24px 24px 40px; }
}

/* ============================================
   响应式 - 手机（侧边栏抽屉化，自动隐藏）
============================================ */
@media (max-width: 768px) {
    .mobile-topbar { display: flex; }

    .admin-wrapper {
        display: block;
        min-height: calc(100vh - 52px);
    }

    .admin-sidebar {
        position: fixed;
        top: 52px;
        left: 0;
        width: 264px;
        max-width: 82vw;
        height: calc(100vh - 52px);
        height: calc(100dvh - 52px);
        z-index: 58;
        transform: translateX(-105%);
        transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 8px 0 32px rgba(15, 23, 42, 0.25);
        padding: 18px 14px 24px;
    }
    .admin-sidebar.sidebar-open { transform: translateX(0); }

    .sidebar-overlay.visible { display: block; }

    .admin-sidebar .brand { font-size: 17px; }
    .admin-sidebar .brand-link { flex-wrap: wrap; gap: 4px; }
    .admin-sidebar .brand-link .view-link { color: var(--sidebar-text); }
    .admin-sidebar .brand-link .view-link:hover { color: #fff; }
    .admin-sidebar .user-info {
        font-size: 12px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .admin-main {
        padding: 18px 14px 40px;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        margin-bottom: 18px;
    }
    .page-header h1 { font-size: 21px; }
    .page-eyebrow { letter-spacing: 2px; }

    .admin-grid {
        grid-template-columns: 1fr !important;
        gap: 16px;
    }

    .form-card {
        padding: 16px !important;
        border-radius: 10px;
    }
    .form-card h3 { font-size: 15px; }

    .card-list {
        padding: 16px;
        border-radius: 10px;
    }

    .form-group input,
    .form-group textarea,
    .form-group select {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        /* 手机端字号 ≥16px，避免 iOS 聚焦输入框时页面自动放大 */
        font-size: 16px !important;
    }
    .image-upload-wrapper input[type="text"] {
        font-size: 16px !important;
    }
    .login-box input {
        font-size: 16px !important;
    }

    .image-upload-wrapper .file-wrapper {
        flex: 1 1 auto !important;
        min-width: 0 !important;
    }
    .image-upload-wrapper input[type="text"] {
        min-width: 0 !important;
        width: 100% !important;
    }
    .image-upload-wrapper .or-text {
        padding: 0 6px;
    }

    .card-item {
        flex-wrap: wrap;
        gap: 10px;
    }
    .card-item img {
        width: 48px;
        height: 48px;
    }
    .card-item .actions {
        width: 100%;
        justify-content: flex-start;
        gap: 4px;
    }
    .card-item .actions .btn-sm {
        font-size: 12px;
        padding: 4px 10px;
    }

    .login-box {
        max-width: 90% !important;
        margin: 40px auto !important;
        padding: 24px 20px !important;
    }
    .login-box h2 {
        font-size: 22px;
        margin-bottom: 20px;
    }
    .login-box input {
        padding: 10px 14px;
        font-size: 14px;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .admin-pagination .page-btn {
        min-width: 30px !important;
        height: 30px !important;
        font-size: 13px !important;
        padding: 0 8px !important;
    }

    .admin-footer {
        font-size: 12px;
        padding: 14px 0 8px;
    }

    .checkbox-group {
        flex-wrap: wrap;
    }

    /* 文件选择器模态框手机适配 */
    .file-picker-box {
        padding: 16px;
        max-width: 95%;
    }
    .file-picker-box .card-item {
        flex-wrap: wrap;
        gap: 8px;
    }
    .file-picker-box .card-item .info {
        flex: 1 1 100%;
    }
    .file-picker-box .card-item .actions {
        flex: 0 0 auto;
        margin-left: auto;
    }
}

/* ============================================
   响应式 - 小屏手机（≤480px）
============================================ */
@media (max-width: 480px) {
    .admin-main {
        padding: 14px 10px 32px !important;
    }

    .form-card {
        padding: 12px 14px !important;
    }
    .form-group input,
    .form-group textarea,
    .form-group select {
        font-size: 16px !important;
        padding: 10px 12px !important;
    }
    .form-group input[type="checkbox"],
    .form-group input[type="radio"] {
        font-size: 13px !important;
        padding: 0 !important;
        width: 18px !important;
        height: 18px !important;
    }

    .card-list {
        padding: 12px 14px;
    }
    .card-item img {
        width: 40px;
        height: 40px;
    }
    .card-item .info .title {
        font-size: 13px;
    }
    .card-item .info .meta {
        font-size: 11px;
    }
    .card-item .actions .btn-sm {
        font-size: 11px;
        padding: 2px 8px;
    }

    .login-box {
        padding: 20px 16px !important;
        margin: 20px auto !important;
    }
    .login-box h2 {
        font-size: 20px;
        margin-bottom: 16px;
    }
    .login-box input {
        font-size: 16px;
        padding: 10px 12px;
    }
    .login-box button {
        font-size: 15px;
        padding: 10px;
    }

    .color-palette .color-option {
        width: 28px !important;
        height: 28px !important;
    }

    .admin-pagination .page-btn {
        min-width: 28px !important;
        height: 28px !important;
        font-size: 12px !important;
        padding: 0 6px !important;
    }

    /* 文件选择器进一步缩小 */
    .file-picker-box .card-item .info .title {
        font-size: 13px;
    }
    .file-picker-box .card-item .info .meta {
        font-size: 11px;
    }
}

/* ============================================
   网站配色面板
============================================ */
.theme-presets {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    margin-top: 6px;
}
.theme-preset-card {
    border: 2px solid var(--color-border);
    border-radius: 8px;
    padding: 10px 8px;
    cursor: pointer;
    transition: 0.2s;
    background: #fff;
    text-align: center;
    user-select: none;
}
.theme-preset-card:hover { border-color: #9ca3af; }
.theme-preset-card.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.theme-preset-swatches {
    display: flex;
    gap: 3px;
    justify-content: center;
    margin-bottom: 8px;
}
.theme-preset-swatches span {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,0.08);
    display: block;
}
.theme-preset-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
}

.theme-colors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 12px;
    margin-top: 6px;
}
.theme-color-item label {
    display: block;
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
    font-weight: 400;
}
.theme-color-input-row {
    display: flex;
    align-items: center;
    gap: 8px;
}
.theme-color-input-row input[type="color"] {
    width: 42px;
    height: 34px;
    padding: 2px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    cursor: pointer;
    background: #fff;
    flex-shrink: 0;
}
.theme-color-input-row .theme-color-text {
    flex: 1;
    min-width: 0;
    padding: 7px 10px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 13px;
    font-family: monospace;
    background: #fafbfd;
    box-sizing: border-box;
}
.theme-color-input-row .theme-color-text:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #fff;
}

@media (max-width: 640px) {
    .theme-presets { grid-template-columns: repeat(2, 1fr); }
    .theme-colors-grid { grid-template-columns: 1fr; }
}

/* ============================================
   Admin 元素特定修复
=========================================== */
.admin-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 768px) {
    .card-item .actions {
        flex-wrap: wrap;
        gap: 4px;
    }
    .card-item .actions .btn {
        flex: 1 0 auto;
        min-width: 60px;
    }
}

/* ============================================
   网站信息（Dashboard）
   宽度与「导航管理-常用导航地址」「用户管理-用户列表」保持一致：
   均为不带 max-width 的整宽 form-card
============================================ */
.dash-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 14px;
}
.dash-stat {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fafbfd;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    transition: var(--transition);
}
.dash-stat:hover {
    background: #fff;
    border-color: var(--color-text);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}
.dash-stat-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    /* 描边风格：黑框 + 黑色图标，不填充 */
    border: 1px solid var(--color-text);
    background: transparent;
    color: var(--color-text);
}
.dash-stat-icon svg { width: 20px; height: 20px; }
.dash-stat-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.dash-stat-label { font-size: 13px; color: var(--color-text-secondary); }
.dash-stat-value { font-size: 24px; font-weight: 600; line-height: 1.25; color: var(--color-text); }
.dash-stat-sub { font-size: 12px; color: var(--color-text-secondary); }
.dash-stat-arrow { flex-shrink: 0; font-size: 20px; line-height: 1; color: #9aa3b5; transition: var(--transition); }
.dash-stat:hover .dash-stat-arrow { color: var(--color-text); }
.dash-updated { white-space: nowrap; }

.dash-sec-title {
    font-size: 14px;
    font-weight: 600;
    margin: 22px 0 12px;
    padding-top: 18px;
    border-top: 1px solid var(--color-border);
}
.dash-sec-title:first-child { margin-top: 0; padding-top: 0; border-top: none; }

.dash-kv { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 10px 20px; }
.dash-kv-item {
    display: flex;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fafbfd;
}
.dash-kv-key { flex-shrink: 0; width: 128px; font-size: 13px; color: var(--color-text-secondary); }
.dash-kv-val { flex: 1; min-width: 0; font-size: 13px; font-weight: 500; word-break: break-word; }

.dash-ext-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.dash-ext {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    font-size: 12px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: #fff;
}
.dash-ext.ok { color: #16a34a; border-color: #bbf7d0; background: #f0fdf4; }
.dash-ext.miss { color: #dc2626; border-color: #fecaca; background: #fef2f2; }
.dash-ext-all {
    margin-top: 10px;
    font-size: 12px;
    line-height: 1.9;
    color: var(--color-text-secondary);
    word-break: break-word;
}
.dash-ext-all code {
    display: inline-block;
    margin: 0 4px 4px 0;
    padding: 1px 7px;
    border-radius: 4px;
    background: #f1f3f5;
    color: var(--color-text);
    font-size: 12px;
}
.dash-note {
    margin-top: 12px;
    font-size: 12px;
    color: var(--color-text-secondary);
}

@media (max-width: 640px) {
    .dash-stat-grid { grid-template-columns: 1fr; }
    .dash-kv { grid-template-columns: 1fr; }
    .dash-kv-key { width: 104px; }
}