:root {
  --bg: #f3f5f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #c8102e;
  --primary-dark: #a30d25;
  --nav: #1b2230;
  --nav-text: #cbd2e0;
  --ok: #15803d;
  --ok-bg: #dcfce7;
  --warn: #b45309;
  --warn-bg: #fef3c7;
  --bad: #b91c1c;
  --bad-bg: #fee2e2;
  --info: #1d4ed8;
  --info-bg: #dbeafe;
  --gray-bg: #e5e7eb;
  --radius: 8px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
}
h1, h2, h3 { margin: 0; font-weight: 600; }
a { color: var(--primary); text-decoration: none; cursor: pointer; }
a:hover { text-decoration: underline; }
code, pre, .mono { font-family: Consolas, "Courier New", monospace; }
code { background: #f1f3f7; padding: 1px 5px; border-radius: 4px; font-size: 13px; }

/* 登录页 */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-card { width: 100%; max-width: 380px; background: var(--card); border-radius: 12px; padding: 36px 32px; box-shadow: 0 6px 30px rgba(15, 23, 42, 0.08); }
.login-card h1 { font-size: 20px; text-align: center; }
.login-card .sub { text-align: center; color: var(--muted); margin: 6px 0 26px; font-size: 13px; }

/* 外壳 */
.shell { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: var(--nav); color: var(--nav-text); display: flex; flex-direction: column; flex-shrink: 0; }
.brand { padding: 20px 20px 16px; color: #fff; font-size: 16px; font-weight: 600; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.brand small { display: block; font-weight: 400; color: #8b94a8; font-size: 12px; margin-top: 2px; }
.nav-group { padding: 14px 12px 4px; font-size: 12px; color: #7d869b; }
.nav a { display: block; color: var(--nav-text); padding: 9px 20px; margin: 1px 8px; border-radius: 6px; }
.nav a:hover { background: rgba(255, 255, 255, 0.07); text-decoration: none; }
.nav a.active { background: var(--primary); color: #fff; }
.sidebar-foot { margin-top: auto; padding: 14px 20px; border-top: 1px solid rgba(255, 255, 255, 0.08); font-size: 13px; }
.sidebar-foot .who { color: #fff; }
.sidebar-foot a { color: #9fb0d0; }
.main { flex: 1; min-width: 0; padding: 24px 28px 40px; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.page-head h2 { font-size: 20px; }
.crumb { background: var(--info-bg); color: var(--info); padding: 10px 14px; border-radius: var(--radius); margin-bottom: 16px; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }

/* 通用组件 */
.card { background: var(--card); border-radius: var(--radius); padding: 18px 20px; box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06); margin-bottom: 16px; }
.card h3 { font-size: 15px; margin-bottom: 12px; }
.grid { display: grid; gap: 14px; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.stat .num { font-size: 26px; font-weight: 600; line-height: 1.2; }
.stat .lbl { color: var(--muted); font-size: 13px; margin-top: 2px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.spacer { flex: 1; }

.btn { border: 1px solid var(--line); background: #fff; color: var(--text); padding: 7px 16px; border-radius: 6px; cursor: pointer; font-size: 14px; font-family: inherit; }
.btn:hover { background: #f8f9fb; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { color: var(--bad); border-color: #f3b4b4; }
.btn.danger:hover { background: var(--bad-bg); }
.btn.sm { padding: 3px 10px; font-size: 13px; }

label.field { display: block; margin-bottom: 14px; }
label.field > span.t { display: block; margin-bottom: 5px; font-weight: 500; }
input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 8px 11px; border: 1px solid #d1d5db; border-radius: 6px; font-size: 14px; font-family: inherit; background: #fff; color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(200, 16, 46, 0.25); border-color: var(--primary); }
textarea { resize: vertical; min-height: 84px; font-family: Consolas, monospace; font-size: 13px; }
.hint { color: var(--muted); font-size: 12px; margin-top: 4px; }

.switch { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 14px; }
.switch input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--primary); flex-shrink: 0; }
.switch .t { font-weight: 500; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 500; color: var(--muted); font-size: 13px; background: #fafbfc; white-space: nowrap; }
tbody tr.click { cursor: pointer; }
tbody tr.click:hover, tbody tr.sel { background: #f8fafc; }
.table-wrap { overflow-x: auto; }
.empty { text-align: center; color: var(--muted); padding: 28px 0; }

.badge { display: inline-block; padding: 1px 9px; border-radius: 10px; font-size: 12px; white-space: nowrap; }
.b-ok { background: var(--ok-bg); color: var(--ok); }
.b-warn { background: var(--warn-bg); color: var(--warn); }
.b-bad { background: var(--bad-bg); color: var(--bad); }
.b-info { background: var(--info-bg); color: var(--info); }
.b-gray { background: var(--gray-bg); color: #4b5563; }

.alert { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 14px; }
.alert.warn { background: var(--warn-bg); color: #92400e; }
.alert.bad { background: var(--bad-bg); color: var(--bad); }
.alert.info { background: var(--info-bg); color: var(--info); }

.chart { display: flex; align-items: flex-end; gap: 6px; height: 120px; padding-top: 8px; }
.chart .col { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; min-width: 0; }
.chart .bar { width: 100%; max-width: 28px; background: var(--primary); border-radius: 3px 3px 0 0; min-height: 2px; opacity: 0.85; }
.chart .bar.zero { background: var(--gray-bg); }
.chart .val { font-size: 11px; color: var(--muted); margin-bottom: 2px; }
.chart .day { font-size: 11px; color: var(--muted); margin-top: 4px; white-space: nowrap; }

.split { display: grid; grid-template-columns: minmax(300px, 380px) 1fr; gap: 16px; align-items: start; }
.logbox { background: #0f172a; color: #d6deeb; padding: 12px 14px; border-radius: 6px; font-size: 12.5px; line-height: 1.55; max-height: 520px; min-height: 160px; overflow: auto; white-space: pre-wrap; word-break: break-all; margin: 0; }

.pager { display: flex; align-items: center; gap: 10px; justify-content: flex-end; margin-top: 12px; }

/* 弹窗与提示 */
.overlay { position: fixed; inset: 0; background: rgba(15, 23, 42, 0.45); display: flex; align-items: center; justify-content: center; z-index: 50; padding: 16px; }
.modal { background: #fff; border-radius: 10px; width: 100%; max-width: 420px; padding: 22px 24px; box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25); }
.modal h3 { font-size: 16px; margin-bottom: 14px; }
.modal .actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 16px; }
#toasts { position: fixed; top: 16px; right: 16px; z-index: 100; display: flex; flex-direction: column; gap: 8px; }
.toast { background: #111827; color: #fff; padding: 10px 16px; border-radius: 6px; box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2); max-width: 340px; }
.toast.err { background: var(--bad); }

.steps { margin: 6px 0 0; padding-left: 20px; color: var(--muted); font-size: 13px; }
.steps li { margin-bottom: 3px; }

@media (max-width: 860px) {
  .shell { flex-direction: column; }
  .sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; align-items: center; }
  .brand { border-bottom: 0; padding: 12px 16px; }
  .nav-group { display: none; }
  .nav { display: flex; flex-wrap: wrap; }
  .nav a { padding: 6px 12px; margin: 2px; }
  .sidebar-foot { margin-top: 0; margin-left: auto; border-top: 0; padding: 8px 14px; }
  .main { padding: 16px 14px 32px; }
  .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid.cols-2 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
}