:root {
  --bg: #f3f5f8;
  --card: #fff;
  --side: #1b2433;
  --side-text: #c5cede;
  --primary: #2b7de9;
  --orange: #ff6a1a;
  --border: #e6e9ef;
  --text: #1f2937;
  --muted: #8a93a3;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
}
a { color: var(--primary); text-decoration: none; }
a.danger { color: #e11d48; }

.app { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px;
  background: var(--side);
  color: var(--side-text);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
.brand {
  padding: 24px 20px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.sidebar nav { padding: 16px 12px; flex: 1; }
.sidebar nav a {
  display: block;
  padding: 12px 14px;
  border-radius: 8px;
  color: var(--side-text);
  margin-bottom: 4px;
}
.sidebar nav a.active,
.sidebar nav a:hover {
  background: rgba(43,125,233,.18);
  color: #fff;
}
.sidebar-foot {
  padding: 16px 20px 24px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.sidebar-foot .user { color: #fff; margin-bottom: 8px; }
.sidebar-foot .logout { color: #9aa4b5; font-size: 13px; }

.main { flex: 1; padding: 28px 32px; min-width: 0; }
.page-header { margin-bottom: 20px; }
.page-header h2 { margin: 0 0 6px; font-size: 24px; }
.page-header p { margin: 0; color: var(--muted); font-size: 14px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.card {
  background: var(--card);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 1px 2px rgba(16,24,40,.04);
  margin-bottom: 20px;
}
.card-title { font-weight: 600; margin-bottom: 16px; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--card);
  border-radius: 12px;
  padding: 20px;
}
.stat-num { font-size: 32px; font-weight: 700; }
.stat-num.online { color: #16a34a; }
.stat-num.offline { color: #94a3b8; }
.stat-num.promo { color: var(--orange); }
.stat-label { color: var(--muted); margin-top: 6px; font-size: 13px; }

.btn {
  display: inline-block;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 14px;
  cursor: pointer;
  line-height: 1.2;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-ghost { background: #eef2f7; color: #334155; margin-left: 8px; }
.btn-block { width: 100%; }
.btn:hover { opacity: .92; }

.filter-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.filter-bar input,
.filter-bar select,
.form-item input,
.form-item select,
.form-item textarea {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  outline: none;
  background: #fff;
}
.filter-bar input { min-width: 240px; }
.filter-bar input:focus,
.form-item input:focus,
.form-item select:focus,
.form-item textarea:focus {
  border-color: var(--primary);
}

.table-wrap { overflow-x: auto; }
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.table th,
.table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.table th { color: var(--muted); font-weight: 600; background: #fafbfc; }
.job-title { font-weight: 600; }
.muted { color: var(--muted); font-size: 12px; margin-top: 4px; }
.salary { color: var(--orange); font-weight: 600; white-space: nowrap; }
.actions a { margin-right: 12px; }
.empty { text-align: center; color: var(--muted); padding: 40px 0 !important; }

.tag-btn {
  border: 1px solid var(--border);
  background: #f8fafc;
  color: #64748b;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
}
.tag-btn.on { background: #fff4ec; color: var(--orange); border-color: #ffd2b3; }
.tag-btn.on-green { background: #ecfdf3; color: #16a34a; border-color: #bbf7d0; }

.pager { margin-top: 16px; }
.pager .pagination { display: flex; gap: 6px; list-style: none; padding: 0; margin: 0; }
.pager li { display: inline-block; }
.pager a, .pager span {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
}
.pager .active span { background: var(--primary); color: #fff; border-color: var(--primary); }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
}
.form-item.full,
.form-actions.full { grid-column: 1 / -1; }
.form-item label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: #475569;
}
.form-item input,
.form-item select,
.form-item textarea { width: 100%; }
.form-item textarea { resize: vertical; font-family: inherit; }
.checks { display: flex; align-items: center; gap: 18px; padding-top: 28px; }
.check { display: flex; align-items: center; gap: 6px; font-size: 14px; color: #334155; }
.form-actions { display: flex; align-items: center; gap: 8px; margin-top: 8px; }

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #cfe6fb, #eaf3fc 40%, #f5f7fa);
}
.login-card {
  width: 380px;
  background: #fff;
  border-radius: 16px;
  padding: 36px 32px;
  box-shadow: 0 12px 40px rgba(30, 64, 120, .12);
}
.login-card h1 { margin: 0 0 6px; font-size: 24px; }
.login-card .sub { margin: 0 0 24px; color: var(--muted); font-size: 13px; }
.login-card label {
  display: block;
  margin: 0 0 6px;
  font-size: 13px;
  color: #475569;
}
.login-card input {
  width: 100%;
  margin-bottom: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-size: 14px;
}
.tip { color: #e11d48; font-size: 13px; min-height: 20px; margin: 10px 0 0; }

@media (max-width: 960px) {
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .sidebar { width: 180px; }
}