/* ============================================================
   饭堂数据管理系统 - 全局样式
   ============================================================ */

:root {
  --primary: #2563eb;
  --primary-light: #3b82f6;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #dc2626;
  --info: #0891b2;
  --bg: #f1f5f9;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
  --radius: 8px;
  --radius-sm: 4px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

/* 布局 */
.app-container { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px;
  background: #1e293b;
  color: #cbd5e1;
  height: 100vh;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  transition: width 0.3s ease, transform 0.3s ease;
  position: sticky;
  top: 0;
  overflow: hidden;
  z-index: 1001;
}
.main-content { flex: 1; padding: 20px; overflow-x: auto; transition: padding 0.3s ease; }

/* 侧边栏 */
.sidebar-header { padding: 20px; text-align: center; border-bottom: 1px solid #334155; }
.sidebar-header h2 { color: #fff; font-size: 16px; margin-top: 8px; }
.sidebar-header .logo { font-size: 28px; }
.sidebar-nav { padding: 12px 0; flex: 1; overflow-y: auto; overflow-x: hidden; }
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: #334155; border-radius: 2px; }
.sidebar-nav a { display: flex; align-items: center; gap: 10px; padding: 10px 20px; color: #94a3b8; text-decoration: none; transition: all 0.2s; white-space: nowrap; }
.sidebar-nav a:hover, .sidebar-nav a.active { background: #334155; color: #fff; }
.sidebar-nav .icon { width: 20px; text-align: center; flex-shrink: 0; }
.sidebar-footer { padding: 12px 20px; border-top: 1px solid #334155; flex-shrink: 0; }
.sidebar-footer .user-info { color: #94a3b8; font-size: 13px; display: flex; align-items: center; gap: 10px; white-space: nowrap; overflow: hidden; }
.sidebar-footer .btn-logout { color: #f87171; cursor: pointer; margin-top: 8px; display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 500; text-decoration: none; white-space: nowrap; padding: 8px 12px; border-radius: 6px; background: rgba(239,68,68,0.1); transition: all 0.2s; }
.sidebar-footer .btn-logout:hover { background: rgba(239,68,68,0.25); color: #fca5a5; }

/* 侧边栏折叠状态 */
.sidebar.collapsed { width: 60px; }
.sidebar.collapsed .sidebar-title,
.sidebar.collapsed .nav-label { display: none; }
.sidebar.collapsed .sidebar-nav a,
.sidebar.collapsed .sidebar-footer .user-info,
.sidebar.collapsed .sidebar-footer .btn-logout { justify-content: center; padding-left: 0; padding-right: 0; }
.sidebar.collapsed .sidebar-header { padding: 20px 10px; }

/* 侧边栏遮罩层（移动端） */
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 1000; }
.sidebar-overlay.show { display: block; }

/* 顶部栏 */
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; flex-wrap: wrap; gap: 10px; }
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar h1 { font-size: 20px; font-weight: 600; }
.topbar .actions { display: flex; gap: 10px; flex-wrap: wrap; }
.sidebar-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm);
  cursor: pointer; color: var(--text); transition: all 0.2s;
}
.sidebar-toggle:hover { background: #f8fafc; border-color: var(--primary); color: var(--primary); }

/* 表格响应式容器 */
.table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* 卡片 */
.card { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin-bottom: 20px; }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.card-header h3 { font-size: 16px; font-weight: 600; }

/* 统计卡片 */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat-card { background: var(--card-bg); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); text-align: center; }
.stat-card .stat-value { font-size: 32px; font-weight: 700; margin: 8px 0; }
.stat-card .stat-label { color: var(--text-light); font-size: 13px; }
.stat-card.primary .stat-value { color: var(--primary); }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.info .stat-value { color: var(--info); }

/* 表格 */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { background: #f8fafc; padding: 10px 12px; text-align: left; font-weight: 600; color: var(--text-light); border-bottom: 2px solid var(--border); white-space: nowrap; }
.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); }
.data-table tr:hover { background: #f8fafc; }
.data-table .text-center { text-align: center; }

/* 表单 */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; color: var(--text); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 8px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; outline: none; transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

/* 按钮 */
.btn { padding: 8px 16px; border: none; border-radius: var(--radius-sm); cursor: pointer; font-size: 14px; font-weight: 500; transition: all 0.2s; display: inline-flex; align-items: center; gap: 6px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: #f8fafc; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 16px; }
.btn-block { width: 100%; justify-content: center; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 标签 */
.tag { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 500; }
.tag-primary { background: #dbeafe; color: #1e40af; }
.tag-success { background: #dcfce7; color: #166534; }
.tag-warning { background: #fef3c7; color: #92400e; }
.tag-danger { background: #fee2e2; color: #991b1b; }
.tag-info { background: #cffafe; color: #155e75; }
.tag-gray { background: #f1f5f9; color: #475569; }

/* 模态框 */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.4); display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg); width: 90%; max-width: 500px; max-height: 90vh; overflow-y: auto; }
.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close { cursor: pointer; font-size: 20px; color: var(--text-light); background: none; border: none; }
.modal-body { padding: 20px; }
.modal-footer { padding: 16px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* 筛选栏 */
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.filter-bar .form-group { margin: 0; min-width: 140px; }
.filter-bar .form-group label { display: none; }
.filter-bar .form-group input, .filter-bar .form-group select { padding: 6px 10px; }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 16px; align-items: center; }
.pagination button { padding: 6px 12px; border: 1px solid var(--border); background: #fff; border-radius: 4px; cursor: pointer; }
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination button:disabled { opacity: 0.5; cursor: not-allowed; }
.pagination .page-info { color: var(--text-light); font-size: 13px; margin: 0 8px; }

/* 提示消息 */
.toast { position: fixed; top: 20px; right: 20px; padding: 12px 20px; border-radius: var(--radius-sm); color: #fff; font-size: 14px; z-index: 2000; box-shadow: var(--shadow-lg); animation: slideIn 0.3s ease; }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--info); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* 空状态 */
.empty-state { text-align: center; padding: 40px; color: var(--text-light); }
.empty-state .icon { font-size: 48px; margin-bottom: 12px; }

/* 响应式 */
@media (max-width: 768px) {
  /* 侧边栏：固定定位 + 抽屉模式 */
  .sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: 220px !important;
    transform: translateX(-100%);
    z-index: 1001;
  }
  .sidebar.mobile-open { transform: translateX(0); }
  /* 移动端即使 collapsed 也显示完整标签 */
  .sidebar.collapsed { width: 220px !important; }
  .sidebar.collapsed .sidebar-title,
  .sidebar.collapsed .nav-label { display: inline; }
  .sidebar.collapsed .sidebar-nav a,
  .sidebar.collapsed .sidebar-footer .user-info,
  .sidebar.collapsed .sidebar-footer .btn-logout { justify-content: flex-start; padding: 10px 20px; }
  .sidebar.collapsed .sidebar-header { padding: 20px; text-align: center; }

  /* 主内容区域：全宽 + 减小内边距 */
  .main-content { width: 100%; padding: 10px; }

  /* 统计卡片：双列 */
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 12px; }
  .stat-card .stat-value { font-size: 24px; }
  .stat-card .stat-label { font-size: 12px; }

  /* 筛选栏：纵向堆叠 */
  .filter-bar { flex-direction: column; align-items: stretch; gap: 8px; }
  .filter-bar .form-group { min-width: 0; width: 100%; }
  .filter-bar .form-group select,
  .filter-bar .form-group input { padding: 8px 10px; font-size: 15px; }
  .filter-bar .btn { width: 100%; height: auto; padding: 8px; }

  /* 表单行：纵向堆叠 */
  .form-row { flex-direction: column; gap: 0; }

  /* 顶部栏：调整布局 */
  .topbar { flex-direction: column; align-items: stretch; gap: 8px; }
  .topbar-left { justify-content: flex-start; }
  .topbar h1 { font-size: 18px; }
  .topbar .actions { width: 100%; flex-wrap: wrap; gap: 6px; }
  .topbar .actions .btn { flex: 1 1 calc(50% - 3px); min-width: 0; padding: 6px 8px; font-size: 13px; justify-content: center; }

  /* 表格：水平滚动 */
  .table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .data-table { min-width: 600px; }
  .data-table th, .data-table td { padding: 8px 10px; font-size: 13px; }

  /* 卡片内边距减小 */
  .card { padding: 12px; margin-bottom: 12px; }
  .card-header { margin-bottom: 12px; flex-wrap: wrap; gap: 8px; }
  .card-header h3 { font-size: 15px; }

  /* 分组统计网格 */
  .group-stats { grid-template-columns: 1fr; }

  /* 柱状图调整 */
  .bar-chart { gap: 8px; padding: 12px 0; }
  .bar { width: 18px; }

  /* 核销终端 */
  .verify-wrapper { padding: 8px; }
  .verify-container { padding: 8px; }
  .stats-row .stat-item .num { font-size: 18px; }

  /* 模态框：全屏适配 */
  .modal { width: 95%; max-height: 85vh; border-radius: 8px; }
  .modal-body { padding: 16px; }
  .modal-header { padding: 12px 16px; }
  .modal-footer { padding: 12px 16px; flex-wrap: wrap; }
  .modal-footer .btn { flex: 1; }

  /* 分页：紧凑 */
  .pagination { flex-wrap: wrap; gap: 4px; }
  .pagination button { padding: 4px 8px; font-size: 13px; }
  .pagination .page-info { width: 100%; text-align: center; }

  /* 导航卡片网格 */
  .nav-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .nav-card { padding: 16px; }
  .nav-card .icon { font-size: 28px; }
  .nav-card .title { font-size: 14px; }

  /* 核销终端餐次选择器 */
  .meal-selector { flex-direction: column; gap: 6px; }

  /* 核销终端搜索框 */
  .search-box { flex-direction: column; gap: 6px; }
  .search-box input { width: 100%; }

  /* 标签缩小 */
  .tag { font-size: 11px; padding: 2px 6px; }

  /* 按钮：全宽 */
  .btn-block { width: 100%; }
  .btn-lg { padding: 10px 16px; font-size: 15px; }

  /* 表单输入：增大触控区域 */
  .form-group input,
  .form-group select,
  .form-group textarea { padding: 10px 12px; font-size: 15px; }
}

@media (max-width: 480px) {
  /* 统计卡片：单列 */
  .stat-grid { grid-template-columns: 1fr; }

  /* 导航卡片：单列 */
  .nav-grid { grid-template-columns: 1fr; }

  /* 顶部栏按钮：单列 */
  .topbar .actions .btn { flex: 1 1 100%; }
}

/* 核销端专用样式 */
.verify-container { max-width: 600px; margin: 0 auto; padding: 20px; }
.verify-stats { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; margin-bottom: 20px; position: sticky; top: 0; z-index: 10; }
.verify-stats .stats-row { display: flex; justify-content: space-around; text-align: center; }
.verify-stats .stat-item .stat-num { font-size: 24px; font-weight: 700; }
.verify-stats .stat-item .stat-name { font-size: 12px; color: var(--text-light); margin-top: 4px; }
.verify-input { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin-bottom: 20px; }
.verify-input .input-tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.verify-input .tab { flex: 1; padding: 10px; text-align: center; border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; }
.verify-input .tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.verify-result { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.verify-result .result-icon { font-size: 48px; text-align: center; margin-bottom: 12px; }
.verify-result.success { border-left: 4px solid var(--success); }
.verify-result.error { border-left: 4px solid var(--danger); }

/* 请假页面 */
.leave-container { max-width: 500px; margin: 0 auto; padding: 20px; min-height: 100vh; background: var(--bg); }
.leave-header { text-align: center; margin-bottom: 20px; }
.leave-header .user-avatar { width: 60px; height: 60px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 24px; margin: 0 auto 12px; }
.leave-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.leave-tabs .tab { flex: 1; padding: 10px; text-align: center; border: 2px solid var(--border); border-radius: var(--radius); cursor: pointer; font-weight: 500; }
.leave-tabs .tab.active { border-color: var(--primary); background: #eff6ff; color: var(--primary); }

/* 二维码展示 */
.qr-display { text-align: center; padding: 20px; }
.qr-display img, .qr-display svg { max-width: 200px; }