:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e2e5ea;
  --text: #1b1f24;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --ok: #16a34a;
  --warn: #b45309;
  --radius: 10px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181c;
    --card: #1e2227;
    --border: #2c3138;
    --text: #e8eaed;
    --muted: #9aa3ad;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 13px; }
code { background: rgba(127, 127, 127, .16); padding: 1px 5px; border-radius: 4px; font-size: 13px; }

/* ---------- 登录 ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.login-card h1 { margin: 0 0 4px; font-size: 20px; }
.login-card .muted { margin: 0 0 20px; }
.login-card label { display: block; margin-bottom: 14px; }
.login-card label span { display: block; margin-bottom: 6px; font-size: 13px; color: var(--muted); }

/* ---------- 布局 ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-left { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.topbar-right { display: flex; align-items: center; gap: 10px; }

.tabs { display: flex; gap: 4px; flex-wrap: wrap; }

/* 面板容器：同一时刻只显示一个，由 JS 切换 .hidden。 */
.tab-panel { display: flex; flex-direction: column; gap: 16px; }
.tab-panel.hidden { display: none; }

.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
}

.tab:hover { background: rgba(127, 127, 127, .12); color: var(--text); }
.tab.active { background: var(--primary); color: #fff; }

.container { max-width: 1080px; margin: 0 auto; padding: 20px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 18px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.card-head h2 { margin: 0; font-size: 16px; }

.grid { display: grid; gap: 14px; margin-bottom: 18px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.stat-label { color: var(--muted); font-size: 13px; }
.stat-value { font-size: 26px; font-weight: 650; margin-top: 4px; }
.stat-value.ok { color: var(--ok); }
.stat-value.warn { color: var(--warn); }
.stat-value.err,
.stat-value.danger { color: var(--danger); }
.stat-value.muted { color: var(--text); }

/* ---------- 表单 ---------- */
input[type="text"], input[type="password"], input[type="number"], textarea, select {
  width: 100%;
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
}

textarea { resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 2px solid var(--primary); outline-offset: 1px; }

.field { display: block; margin-bottom: 12px; }
.field > span { display: block; margin-bottom: 6px; font-size: 13px; color: var(--muted); }
.field-sm { max-width: 200px; margin-bottom: 0; }

.form-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.form-row { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; margin-top: 10px; }
.switch-row { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.switch-row input { width: auto; }

.token-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 10px 0; }
.token-row input { flex: 1 1 320px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }

.form-msg { margin: 10px 0 0; font-size: 13px; min-height: 1.2em; }
.form-msg.ok { color: var(--ok); }
.form-msg.err { color: var(--danger); }

/* ---------- 按钮 ---------- */
.btn {
  font: inherit;
  font-size: 14px;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
}

.btn:hover { background: rgba(127, 127, 127, .1); }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn-sm { font-size: 13px; padding: 5px 10px; }
/* 表格行内操作按钮：更紧凑，避免撑高表格行。 */
.btn-xs { font-size: 12px; padding: 3px 8px; border-radius: 6px; }
.btn.danger { border-color: var(--danger); color: var(--danger); }
.btn.danger:hover { background: rgba(220, 38, 38, .1); }
.btn-block { width: 100%; margin-top: 6px; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: rgba(220, 38, 38, .1); }
.btn-ghost { background: transparent; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: 13px; white-space: nowrap; }
td.mono, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
tbody tr:last-child td { border-bottom: 0; }
.empty { color: var(--muted); padding: 18px 10px; text-align: center; }
.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* ---------- 徽章 ---------- */
.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(127, 127, 127, .16);
  color: var(--muted);
}

.badge-ok { background: rgba(22, 163, 74, .16); color: var(--ok); }
.badge-danger { background: rgba(220, 38, 38, .14); color: var(--danger); }
.badge-warn { background: rgba(180, 83, 9, .16); color: var(--warn); }
.badge-info { background: rgba(37, 99, 235, .14); color: var(--primary); }

.pill {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(127, 127, 127, .14);
  font-size: 13px;
}

/* ---------- 取号结果 ---------- */
.issued {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px 14px;
  background: var(--bg);
}

.issued .kv { display: flex; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.issued .kv:last-child { border-bottom: 0; }
.issued .kv .k { flex: 0 0 96px; color: var(--muted); font-size: 13px; }
.issued .kv .v { flex: 1 1 240px; min-width: 0; word-break: break-all; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }

.code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  margin: 10px 0 0;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  background: #1b1f24;
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 100;
  max-width: 90vw;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .2);
}

.toast.ok { background: var(--ok); }
.toast.err { background: var(--danger); }

/* 统计卡片的辅助说明行：弱化呈现，避免与主数值争夺注意力。 */
.stat-hint {
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}

/* 统计网格与内联提示文本 */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

.msg { margin: 8px 0 0; font-size: 13px; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--danger); }