:root {
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --bg: #f4f6fa;
  --panel: #ffffff;
  --line: #e5e9f0;
  --text: #1f2937;
  --muted: #6b7280;
  --side: #111827;
  --ok: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 14px;
}

.hidden { display: none !important; }
button { font-family: inherit; cursor: pointer; }

/* ---------- 登录 ---------- */
.login-wrap {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e3a8a, #2563eb 45%, #0ea5e9);
}
.login-card {
  width: 360px;
  background: #fff;
  border-radius: 14px;
  padding: 32px 28px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, .28);
}
.login-card h1 { margin: 0 0 22px; font-size: 20px; text-align: center; }
.login-card p.sub { margin: 0 0 22px; color: var(--muted); font-size: 13px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}
.btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  padding: 9px 16px;
  border-radius: 8px;
  font-size: 13px;
}
.btn:hover { border-color: #cbd5e1; background: #f8fafc; }
.btn-primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.btn-danger { color: var(--danger); border-color: #fecaca; background: #fef2f2; }
.btn-block { width: 100%; padding: 11px; font-size: 15px; }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 6px; }

/* ---------- 主布局：左右分栏 ---------- */
.layout { display: flex; height: 100%; }

.sidebar {
  width: 216px;
  flex: 0 0 216px;
  background: var(--side);
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
}
.brand {
  padding: 20px 18px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  letter-spacing: .5px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.brand small { display: block; font-size: 11px; color: #64748b; font-weight: 400; margin-top: 4px; letter-spacing: 0; }
.sidebar nav { padding: 12px 10px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.sidebar nav button {
  text-align: left;
  background: transparent;
  border: 0;
  color: #cbd5e1;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
}
.sidebar nav button:hover { background: rgba(255, 255, 255, .07); color: #fff; }
.sidebar nav button.active { background: var(--brand); color: #fff; }
.sidebar-foot {
  padding: 12px 14px;
  border-top: 1px solid rgba(255, 255, 255, .07);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  color: #94a3b8;
}
.sidebar-foot button {
  background: rgba(255, 255, 255, .08);
  border: 0;
  color: #e2e8f0;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
}

/* ---------- 右侧：上下布局 ---------- */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
  height: 60px;
  flex: 0 0 60px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
}
.topbar h1 { margin: 0; font-size: 17px; font-weight: 600; }
.topbar .hint { font-size: 12px; color: var(--muted); }
.topbar-actions { display: flex; gap: 8px; align-items: center; }
.content { flex: 1; overflow: auto; padding: 20px 22px 40px; }
.content > section { animation: fade .12s ease-out; }
@keyframes fade { from { opacity: .4; } to { opacity: 1; } }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 18px;
  margin-bottom: 16px;
}
.card h3 { margin: 0 0 14px; font-size: 14px; font-weight: 600; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.row .field { margin-bottom: 0; }
.grow { flex: 1; min-width: 200px; }

/* ---------- 卡类型选择 ---------- */
.kinds { display: grid; grid-template-columns: repeat(auto-fill, minmax(132px, 1fr)); gap: 10px; }
.kind {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 12px;
  background: #fff;
  text-align: left;
  transition: .12s;
}
.kind b { display: block; font-size: 14px; margin-bottom: 3px; }
.kind span { font-size: 12px; color: var(--muted); }
.kind:hover { border-color: #bfdbfe; background: #f8fbff; }
.kind.active { border-color: var(--brand); background: #eff6ff; box-shadow: 0 0 0 2px rgba(37, 99, 235, .12); }

.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 20px;
  padding: 5px 12px;
  font-size: 12px;
  color: var(--muted);
}
.chip:hover { border-color: #bfdbfe; color: var(--brand); }

/* ---------- 结果区 ---------- */
.code-box {
  width: 100%;
  min-height: 150px;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.6;
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfdff;
  resize: vertical;
  color: #0f172a;
}

/* ---------- 表格 ---------- */
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; white-space: nowrap; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); }
th { background: #f8fafc; font-weight: 600; color: #475569; font-size: 12px; position: sticky; top: 0; }
tr:last-child td { border-bottom: 0; }
tr:hover td { background: #fbfdff; }
.mono { font-family: ui-monospace, Menlo, Consolas, monospace; }
.muted { color: var(--muted); }
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  line-height: 18px;
}
.badge.unused { background: #eff6ff; color: #1d4ed8; }
.badge.active { background: #ecfdf5; color: #15803d; }
.badge.expired { background: #fef2f2; color: #b91c1c; }
.badge.disabled { background: #f3f4f6; color: #4b5563; }
.badge.pending { background: #fffbeb; color: #b45309; }
.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* ---------- 分页 ---------- */
.pager { display: flex; align-items: center; gap: 10px; margin-top: 12px; font-size: 13px; color: var(--muted); }
.pager .btn { padding: 6px 12px; }

/* ---------- 统计 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}
.stat b { display: block; font-size: 26px; font-weight: 600; margin-bottom: 2px; }
.stat span { font-size: 12px; color: var(--muted); }

/* ---------- 提示 ---------- */
.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: #111827;
  color: #fff;
  padding: 11px 16px;
  border-radius: 8px;
  font-size: 13px;
  opacity: 0;
  transform: translateY(8px);
  transition: .18s;
  pointer-events: none;
  z-index: 99;
  max-width: 80vw;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.err { background: #b91c1c; }