/* =========================================
   管理后台全局样式
   侧边栏左侧布局，内容区自适应
   ========================================= */

/* CSS 变量 */
:root {
    --primary: #1677ff;
    --primary-hover: #4096ff;
    --primary-light: #e6f4ff;
    --primary-bg: #f0f5ff;
    --success: #52c41a;
    --success-bg: #f6ffed;
    --warning: #faad14;
    --warning-bg: #fffbe6;
    --danger: #ff4d4f;
    --danger-bg: #fff2f0;
    --text: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --bg: #f9fafb;
    --bg-white: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --radius: 8px;
    --radius-sm: 6px;
    --sidebar-width: 220px;
    --header-height: 56px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 14px; color: var(--text); background: var(--bg); line-height: 1.5; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }
table { border-collapse: collapse; width: 100%; }
input, select, textarea, button { font-family: inherit; font-size: inherit; }
img { max-width: 100%; }

/* ===== 顶部导航栏 ===== */
.admin-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    height: var(--header-height);
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px;
    box-shadow: var(--shadow-sm);
}
.header-left { display: flex; align-items: center; gap: 10px; }
.header-left .logo { font-size: 18px; font-weight: 700; color: var(--text); }
.header-left .version { font-size: 11px; background: var(--primary-light); color: var(--primary); padding: 2px 8px; border-radius: 10px; font-weight: 600; }
.header-left .tenant-badge { font-size: 12px; background: var(--primary-bg); color: var(--primary); padding: 2px 10px; border-radius: 10px; border: 1px solid var(--primary-light); }
.header-right { display: flex; align-items: center; gap: 16px; }
.user-info { font-size: 13px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.role-tag { font-size: 11px; padding: 2px 8px; border-radius: 10px; background: var(--primary); color: #fff; font-weight: 600; }
.btn-logout { font-size: 13px; color: var(--text-secondary); padding: 6px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border); transition: all 0.2s; }
.btn-logout:hover { color: var(--danger); border-color: var(--danger); background: var(--danger-bg); }

/* 代登录提示条 */
.login-as-bar {
    position: fixed; top: var(--header-height); left: 0; right: 0; z-index: 99;
    height: 38px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px;
    background: var(--warning-bg); border-bottom: 1px solid #ffe58f;
    font-size: 13px; color: #ad6800;
}

/* ===== 布局（纯 margin 布局，不用 flex，避免 fixed 元素干扰） ===== */
.admin-body {
    padding-top: var(--header-height);
    min-height: 100vh;
}
.admin-body.has-login-as-bar { padding-top: calc(var(--header-height) + 38px); }

/* ===== 侧边栏（左侧固定） ===== */
.admin-sidebar {
    position: fixed;
    left: 0;
    top: var(--header-height);
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-white);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 0;
    z-index: 50;
}
.has-login-as-bar .admin-sidebar { top: calc(var(--header-height) + 38px); }

.sidebar-menu { padding: 0 8px; }
.menu-group { margin-bottom: 8px; }
.menu-title { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; padding: 8px 12px 4px; }
.menu-item {
    display: flex; align-items: center; gap: 8px;
    padding: 9px 12px; margin: 2px 0;
    border-radius: var(--radius-sm);
    color: var(--text-secondary); font-size: 13px;
    transition: all 0.15s;
}
.menu-item:hover { background: var(--primary-light); color: var(--primary); }
.menu-item.active { background: var(--primary-bg); color: var(--primary); font-weight: 600; }
.menu-item .icon { font-size: 15px; width: 20px; text-align: center; }

/* ===== 内容区（右侧，左边留出侧边栏宽度） ===== */
.admin-main {
    margin-left: var(--sidebar-width);
    padding: 24px;
    min-height: calc(100vh - var(--header-height));
}

/* ===== 页面头部 ===== */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; flex-wrap: wrap; gap: 12px; }
.page-header h2 { font-size: 20px; font-weight: 700; color: var(--text); }
.page-actions { display: flex; gap: 8px; }

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 4px; padding: 8px 16px; border-radius: var(--radius-sm); font-size: 13px; font-weight: 500; border: 1px solid transparent; cursor: pointer; transition: all 0.2s; text-decoration: none; line-height: 1.4; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-xs { padding: 3px 8px; font-size: 11px; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; }
.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-success:hover { background: #73d13d; border-color: #73d13d; color: #fff; }
.btn-warning { background: var(--warning); color: #fff; border-color: var(--warning); }
.btn-warning:hover { background: #ffc53d; border-color: #ffc53d; color: #fff; }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #ff7875; border-color: #ff7875; color: #fff; }
.btn-default { background: var(--bg-white); color: var(--text-secondary); border-color: var(--border); }
.btn-default:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-light); }
.btn[disabled], .btn.disabled { opacity: 0.5; cursor: not-allowed; }

/* ===== 卡片/面板 ===== */
.panel { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 20px; box-shadow: var(--shadow-sm); }
.panel-title { padding: 14px 20px; border-bottom: 1px solid var(--border); font-size: 15px; font-weight: 600; color: var(--text); background: var(--bg); border-radius: var(--radius) var(--radius) 0 0; }
.panel-body { padding: 20px; }

/* ===== 数据表格 ===== */
.data-table { width: 100%; font-size: 13px; }
.data-table thead th { background: var(--bg); padding: 10px 14px; text-align: left; font-weight: 600; color: var(--text-secondary); border-bottom: 2px solid var(--border); white-space: nowrap; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
.data-table tbody td { padding: 10px 14px; border-bottom: 1px solid var(--border-light); vertical-align: middle; }
.data-table tbody tr:hover { background: var(--primary-bg); }
.data-table .empty-tip { text-align: center; color: var(--text-muted); padding: 40px 14px; font-size: 14px; }

/* ===== 状态标签 ===== */
.status { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 500; }
.status-success { background: var(--success-bg); color: var(--success); border: 1px solid #b7eb8f; }
.status-warning { background: var(--warning-bg); color: #d48806; border: 1px solid #ffe58f; }
.status-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid #ffa39e; }
.status-info { background: var(--primary-light); color: var(--primary); border: 1px solid #91caff; }
.status-muted { background: var(--bg); color: var(--text-muted); border: 1px solid var(--border); }

/* ===== 表单 ===== */
.form-row { display: flex; gap: 16px; margin-bottom: 16px; }
.form-group { flex: 1; margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-group .help-text { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 8px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-white); color: var(--text); outline: none; transition: border-color 0.2s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(22,119,255,0.1); }
.form-group textarea { min-height: 80px; resize: vertical; font-family: inherit; }
.form-actions { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); display: flex; gap: 8px; }

/* ===== 统计卡片 ===== */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm); }
.stat-card .label { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.stat-card .value { font-size: 28px; font-weight: 800; color: var(--text); line-height: 1.2; }
.stat-card .value.text-primary { color: var(--primary); }
.stat-card .value.text-success { color: var(--success); }
.stat-card .value.text-warning { color: var(--warning); }
.stat-card .value.text-danger { color: var(--danger); }
.stat-card .sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ===== Toast 提示 ===== */
.toast { position: fixed; top: 80px; right: 24px; z-index: 9999; padding: 12px 20px; border-radius: var(--radius-sm); font-size: 13px; color: #fff; box-shadow: var(--shadow-md); animation: toastIn 0.3s ease; pointer-events: none; }
.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--primary); }
@keyframes toastIn { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }

/* ===== 模态框 ===== */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.45); z-index: 200; display: flex; align-items: center; justify-content: center; }
.modal { background: var(--bg-white); border-radius: var(--radius); width: 90%; max-width: 520px; max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-md); }
.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--text-muted); padding: 4px; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 20px; }
.modal-footer { padding: 12px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }

/* ===== Alert ===== */
.alert { padding: 12px 16px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 16px; border: 1px solid; }
.alert-success { background: var(--success-bg); color: #389e0d; border-color: #b7eb8f; }
.alert-danger { background: var(--danger-bg); color: #cf1322; border-color: #ffa39e; }
.alert-warning { background: var(--warning-bg); color: #d48806; border-color: #ffe58f; }
.alert-info { background: var(--primary-light); color: #0958d9; border-color: #91caff; }

/* ===== 分页 ===== */
.pagination { display: flex; align-items: center; justify-content: center; gap: 4px; margin-top: 16px; padding: 12px 0; }
.pagination a, .pagination span { display: inline-block; padding: 6px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 13px; color: var(--text-secondary); }
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .disabled { color: var(--text-muted); pointer-events: none; }

/* ===== 链接输入框 ===== */
.link-input { font-size: 12px; padding: 4px 8px; border: 1px solid var(--border); border-radius: 4px; width: 200px; }

/* ===== 图表容器 ===== */
.chart-box { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.chart-box h4 { font-size: 14px; font-weight: 600; margin-bottom: 12px; color: var(--text); }

/* ===== 登录页 ===== */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.login-card { background: var(--bg-white); border-radius: 12px; padding: 40px; width: 380px; box-shadow: 0 20px 60px rgba(0,0,0,0.15); }
.login-card h1 { text-align: center; font-size: 24px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.login-card .subtitle { text-align: center; color: var(--text-secondary); margin-bottom: 28px; font-size: 14px; }
.login-card .form-group { margin-bottom: 20px; }
.login-card .form-group input { padding: 10px 14px; font-size: 14px; }
.login-card .btn-primary { width: 100%; padding: 12px; font-size: 15px; font-weight: 600; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    :root { --sidebar-width: 180px; }
}
/* ===== 标签 ===== */
.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 12px; font-weight: 500; }
.tag-primary { background: var(--primary-bg); color: var(--primary); }
.tag-info { background: #e6f7ff; color: #1890ff; }
.tag-success { background: var(--success-bg); color: var(--success); }
.tag-warning { background: var(--warning-bg); color: var(--warning); }
.tag-danger { background: var(--danger-bg); color: var(--danger); }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .admin-sidebar { display: none; }
    .admin-main { margin-left: 0; padding: 16px; }
    .form-row { flex-direction: column; gap: 0; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .page-header { flex-direction: column; align-items: flex-start; }
}