/* ============================================================
   保安证·叉车证 考试题库 —— 后台样式
   ============================================================ */
:root {
  --primary: #1e5eff;
  --primary-dark: #1248cc;
  --success: #16a34a;
  --danger: #dc2626;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #f3f5f9;
  --border: #e5e7eb;
  --side-w: 210px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14.5px;
}
a { color: var(--primary); text-decoration: none; }
input[type="text"], input[type="password"], input[type="number"], select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(30,94,255,.12); }
textarea { resize: vertical; }
label { display: block; margin-bottom: 5px; color: var(--text-light); font-size: 13.5px; }
.muted { color: var(--text-light); font-size: 13px; margin: 6px 0 14px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 8px 16px; border-radius: 8px;
  border: none; cursor: pointer; font-size: 14px; font-weight: 600;
  transition: .2s; text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-outline { background: #fff; border: 1.5px solid #d3dae6; color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 5px 11px; font-size: 13px; }
.btn-xs { padding: 3px 8px; font-size: 12px; border-radius: 6px; }

/* ---------- 布局 ---------- */
.admin-wrap { display: flex; min-height: 100vh; }
.admin-side {
  width: var(--side-w);
  background: #131f38;
  color: #c9d6ea;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  overflow-y: auto;
}
.side-brand {
  padding: 20px 18px;
  font-weight: 700;
  font-size: 16px;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.08);
  line-height: 1.5;
}
.admin-side nav { padding: 12px 10px; }
.admin-side nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: 9px;
  color: #c9d6ea;
  font-size: 14px;
  margin-bottom: 3px;
  transition: .15s;
}
.admin-side nav a:hover { background: rgba(255,255,255,.07); color: #fff; }
.admin-side nav a.active { background: var(--primary); color: #fff; font-weight: 600; }
.admin-side nav a span { width: 20px; text-align: center; }

.admin-main { flex: 1; margin-left: var(--side-w); padding: 0 24px 40px; }
.admin-top {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 0 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.admin-top h1 { font-size: 21px; }
.admin-user { color: var(--text-light); font-size: 13.5px; }
.admin-content { max-width: 1100px; }

/* ---------- 面板 ---------- */
.panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 22px;
  margin-bottom: 18px;
  box-shadow: 0 1px 4px rgba(20,40,90,.05);
}
.panel h2 { font-size: 16px; margin-bottom: 14px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1.4fr; gap: 18px; align-items: start; }

/* ---------- 表单 ---------- */
.form-panel .form-row { margin-bottom: 14px; }
.form-row .opts-grid { display: grid; grid-template-columns: 1fr; gap: 8px; }
.opts-grid > div { display: flex; align-items: center; gap: 8px; }
.opt-tag {
  flex: 0 0 30px; height: 30px;
  background: var(--primary); color: #fff;
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px;
}
.row-2, .row-3 { display: grid; gap: 14px; }
.row-2 { grid-template-columns: 1fr 1fr; }
.row-3 { grid-template-columns: repeat(3, 1fr); }
.form-actions { display: flex; gap: 10px; margin-top: 18px; }

/* ---------- 统计卡片 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 18px; }
.stat-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: 12px; padding: 20px;
  box-shadow: 0 1px 4px rgba(20,40,90,.05);
  position: relative;
}
.stat-num { font-size: 34px; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 15px; font-weight: 600; margin-top: 2px; }
.stat-sub { color: var(--text-light); font-size: 12.5px; margin: 2px 0 12px; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { padding: 9px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
th { background: #f8fafc; color: var(--text-light); font-weight: 600; white-space: nowrap; }
tr:hover td { background: #fafbff; }
.td-q { max-width: 340px; }
.td-act { white-space: nowrap; }
.td-act form { display: inline; }

.badge {
  display: inline-block; padding: 2px 9px; border-radius: 99px;
  font-size: 12px; font-weight: 600;
}
.badge.single { background: #e8efff; color: #1e5eff; }
.badge.multi { background: #fef3c7; color: #b45309; }
.badge.judge { background: #dcfce7; color: #15803d; }

/* ---------- 开关 ---------- */
.switch {
  border: 1.5px solid #d3dae6; background: #fff; color: var(--text-light);
  border-radius: 99px; padding: 4px 12px; cursor: pointer;
  font-size: 13px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 7px;
}
.switch.on { background: #ecfdf3; border-color: var(--success); color: var(--success); }
.switch-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #cbd5e1;
}
.switch.on .switch-dot { background: var(--success); }

/* ---------- 筛选栏 / 分页 ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.filter-bar select, .filter-bar input[type="text"] { width: auto; min-width: 120px; }
.pager { display: flex; gap: 10px; align-items: center; margin-top: 14px; flex-wrap: wrap; }

/* ---------- 提示 ---------- */
.flash {
  padding: 11px 16px; border-radius: 9px; margin-bottom: 14px;
  font-size: 14px;
}
.flash.ok { background: #ecfdf3; color: #14532d; border: 1px solid #bbf7d0; }
.flash.err { background: #fef2f2; color: #7f1d1d; border: 1px solid #fecaca; }

/* ---------- 弹窗 ---------- */
.popup-mask {
  position: fixed; inset: 0; z-index: 900;
  background: rgba(15,23,42,.5);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.popup-box { background: #fff; border-radius: 14px; width: 100%; max-width: 440px; box-shadow: 0 20px 60px rgba(0,0,0,.3); overflow: hidden; }
.popup-head {
  background: linear-gradient(135deg, var(--primary), #6a9bff);
  color: #fff; padding: 13px 18px;
  display: flex; justify-content: space-between; align-items: center;
  font-weight: 700;
}
.popup-close {
  background: rgba(255,255,255,.2); border: none; color: #fff;
  width: 26px; height: 26px; border-radius: 50%;
  cursor: pointer; font-size: 15px;
}
.popup-body { padding: 18px 20px; }

/* ---------- 代码块 ---------- */
.code-block {
  background: #0f172a; color: #e2e8f0;
  padding: 14px 16px; border-radius: 10px;
  font-size: 12.5px; line-height: 1.7; overflow-x: auto;
  margin: 10px 0;
}

/* ---------- 富文本工具栏 ---------- */
.rt-toolbar { display: flex; gap: 6px; margin-bottom: 6px; }
.rt-toolbar button {
  padding: 5px 12px; border: 1px solid var(--border);
  border-radius: 7px; background: #fff; cursor: pointer;
  font-size: 13px;
}
.rt-toolbar button:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- 登录页 ---------- */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #0f1b3d, #1e5eff); }
.login-box {
  background: #fff; border-radius: 16px;
  padding: 34px 36px; width: 100%; max-width: 400px;
  box-shadow: 0 24px 60px rgba(0,0,0,.35);
}
.login-box h1 { font-size: 22px; text-align: center; }
.login-sub { text-align: center; color: var(--text-light); font-size: 13px; margin: 6px 0 22px; }
.login-box label { margin-top: 12px; }
.login-box input { margin-bottom: 4px; }
.login-tip { text-align: center; color: var(--text-light); font-size: 12.5px; margin-top: 16px; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .admin-side { position: static; width: 100%; }
  .admin-wrap { flex-direction: column; }
  .admin-main { margin-left: 0; padding: 0 14px 30px; }
  .stat-grid { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .row-3 { grid-template-columns: 1fr; }
}