:root {
  --bg: #0b0f14;
  --bg-soft: #121821;
  --bg-card: #151c26;
  --border: #23303f;
  --text: #e6edf3;
  --text-dim: #8b9bb0;
  --accent: #4d9fff;
  --accent-dim: #2563eb;
  --ok: #3fb950;
  --warn: #d29922;
  --danger: #f85149;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 18px; }

/* ---------------- 顶栏 ---------------- */
.topbar {
  background: rgba(11, 15, 20, .92);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(6px);
}
.topbar-inner { display: flex; align-items: center; gap: 18px; min-height: 58px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); font-size: 16px; }
.brand:hover { text-decoration: none; }
.brand-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 10px var(--ok); }
.nav { display: flex; gap: 4px; flex-wrap: wrap; flex: 1 1 auto; }
.nav-link {
  color: var(--text-dim);
  padding: 6px 11px;
  border-radius: 8px;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-link:hover { background: var(--bg-soft); color: var(--text); text-decoration: none; }
.nav-link.is-active { background: var(--bg-soft); color: var(--text); font-weight: 600; }
.pill {
  background: var(--danger);
  color: #fff;
  font-size: 11px;
  line-height: 1;
  padding: 3px 6px;
  border-radius: 999px;
}
.topbar-right { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.who { color: var(--text-dim); font-size: 14px; }

/* ---------------- 通用 ---------------- */
.main { padding: 26px 18px 60px; }
.page-head { margin-bottom: 18px; }
.page-head h1 { margin: 0; font-size: 22px; }
.muted { color: var(--text-dim); font-size: 13px; }
.mono { font-family: Consolas, "Cascadia Mono", monospace; font-size: 13px; }
.right { text-align: right; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.row { display: flex; gap: 16px; flex-wrap: wrap; }
.row > .grow { flex: 1 1 320px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.card h2 { margin: 0 0 12px; font-size: 16px; }
.card h3 { margin: 0 0 8px; font-size: 14px; color: var(--text-dim); font-weight: 600; }

.stat { display: flex; flex-direction: column; gap: 2px; }
.stat .label { color: var(--text-dim); font-size: 12px; }
.stat .value { font-size: 20px; font-weight: 700; }
.stat .value.small { font-size: 15px; font-weight: 600; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); font-size: 14px; vertical-align: middle; }
th { color: var(--text-dim); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: .04em; }
tbody tr:hover { background: rgba(255, 255, 255, .018); }
.table-wrap { overflow-x: auto; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.badge-ok { background: rgba(63, 185, 80, .14); color: var(--ok); border-color: rgba(63, 185, 80, .35); }
.badge-warn { background: rgba(210, 153, 34, .14); color: var(--warn); border-color: rgba(210, 153, 34, .35); }
.badge-danger { background: rgba(248, 81, 73, .14); color: var(--danger); border-color: rgba(248, 81, 73, .35); }
.badge-muted { background: rgba(139, 155, 176, .12); color: var(--text-dim); border-color: var(--border); }
.badge-info { background: rgba(77, 159, 255, .14); color: var(--accent); border-color: rgba(77, 159, 255, .35); }

/* ---------------- 表单 ---------------- */
label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 5px; }
input[type=text], input[type=password], input[type=email], select, textarea {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 9px 11px;
  font-size: 14px;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(77, 159, 255, .35); outline-offset: 0; border-color: var(--accent-dim); }
textarea { min-height: 130px; resize: vertical; }
.field { margin-bottom: 14px; }

.code-input {
  font-size: 26px;
  letter-spacing: 10px;
  text-align: center;
  font-family: Consolas, monospace;
  padding: 14px;
}

.btn {
  display: inline-block;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
}
.btn:hover { border-color: var(--accent-dim); text-decoration: none; }
.btn-primary { background: var(--accent-dim); border-color: var(--accent-dim); color: #fff; font-weight: 600; }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-danger { background: rgba(248, 81, 73, .16); border-color: rgba(248, 81, 73, .5); color: #ffb4b0; }
.btn-ghost { background: transparent; }
.btn-sm { padding: 5px 11px; font-size: 13px; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

.flash {
  border-radius: 8px;
  padding: 11px 14px;
  margin-bottom: 14px;
  font-size: 14px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.flash-success { border-color: rgba(63, 185, 80, .45); background: rgba(63, 185, 80, .10); }
.flash-error { border-color: rgba(248, 81, 73, .45); background: rgba(248, 81, 73, .10); }
.flash-warning { border-color: rgba(210, 153, 34, .45); background: rgba(210, 153, 34, .10); }

.empty { color: var(--text-dim); padding: 22px; text-align: center; border: 1px dashed var(--border); border-radius: var(--radius); font-size: 14px; }

/* ---------------- 标签页 ---------------- */
.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--border); margin-bottom: 18px; flex-wrap: wrap; }
.tab {
  padding: 9px 14px;
  color: var(--text-dim);
  border-bottom: 2px solid transparent;
  font-size: 14px;
}
.tab:hover { color: var(--text); text-decoration: none; }
.tab.is-active { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }

/* ---------------- 进度条 ---------------- */
.bar { height: 6px; background: var(--bg-soft); border-radius: 999px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--accent); }
.bar.ok > span { background: var(--ok); }
.bar.warn > span { background: var(--warn); }
.bar.danger > span { background: var(--danger); }

/* ---------------- 时间线 ---------------- */
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { padding: 10px 0 10px 16px; border-left: 2px solid var(--border); position: relative; }
.timeline li::before {
  content: ""; position: absolute; left: -5px; top: 17px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
}
.timeline .t-time { color: var(--text-dim); font-size: 12px; }
.timeline .t-text { font-size: 14px; }

/* ---------------- 工单对话 ---------------- */
.chat { display: flex; flex-direction: column; gap: 12px; }
.msg { border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; background: var(--bg-soft); }
.msg.admin { border-color: rgba(77, 159, 255, .4); }
.msg .who { font-size: 12px; color: var(--text-dim); margin-bottom: 6px; }
.msg .body { white-space: pre-wrap; word-break: break-word; font-size: 14px; }

/* ---------------- 登录页 ---------------- */
.login-shell { max-width: 420px; margin: 8vh auto; }
.login-shell .card { padding: 26px; }
.login-help { font-size: 13px; color: var(--text-dim); line-height: 1.8; }
.login-help code { background: var(--bg-soft); padding: 1px 6px; border-radius: 5px; }

/* ---------------- 页脚 ---------------- */
.footer { border-top: 1px solid var(--border); padding: 16px 0; margin-top: 20px; }
.footer-inner { display: flex; justify-content: space-between; gap: 12px; font-size: 12.5px; color: var(--text-dim); flex-wrap: wrap; }

@media (max-width: 720px) {
  .nav { order: 3; width: 100%; overflow-x: auto; flex-wrap: nowrap; }
  .topbar-right { order: 2; }
  .stat .value { font-size: 18px; }
}