:root {
  --bg: #f5f7fa;
  --panel: #ffffff;
  --border: #e3e8ef;
  --text: #1f2733;
  --muted: #6b7785;
  --primary: #2f6fed;
  --primary-d: #2256c4;
  --danger: #e0483c;
  --ok: #1f9d55;
  --warn: #c9821a;
  --shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .06);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
.hidden { display: none !important; }

/* ---------- 登录 ---------- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #eef3ff, #f5f7fa); }
.login-card { width: 360px; background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 32px 28px; box-shadow: var(--shadow); }
.login-logo { width: 52px; height: 52px; border-radius: 12px; background: var(--primary); color: #fff; font-weight: 800; font-size: 20px; display: flex; align-items: center; justify-content: center; letter-spacing: 1px; }
.login-card h1 { font-size: 18px; margin: 16px 0 4px; }
.login-sub { color: var(--muted); margin: 0 0 22px; font-size: 12px; letter-spacing: .5px; }
.login-card label { display: block; font-size: 12px; color: var(--muted); margin: 12px 0 6px; }
.login-card input { width: 100%; height: 40px; border: 1px solid var(--border); border-radius: 8px; padding: 0 12px; font-size: 14px; outline: none; }
.login-card input:focus { border-color: var(--primary); }
.form-error { color: var(--danger); font-size: 12px; min-height: 18px; margin-top: 8px; }
.login-foot { margin-top: 18px; color: var(--muted); font-size: 12px; text-align: center; }

/* ---------- 布局 ---------- */
.app { min-height: 100vh; display: flex; flex-direction: column; }
.topbar { height: 56px; background: var(--panel); border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; padding: 0 20px; }
.brand { font-weight: 700; font-size: 15px; }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.user-tag { color: var(--muted); font-size: 13px; }
.user-tag b { color: var(--text); }
.tabs { display: flex; gap: 4px; background: var(--panel); border-bottom: 1px solid var(--border); padding: 0 16px; }
.tab { padding: 12px 16px; cursor: pointer; font-size: 14px; color: var(--muted); border-bottom: 2px solid transparent; }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.content { padding: 20px; flex: 1; }

/* ---------- 卡片 / 概览 ---------- */
.stats { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 18px; }
.stat-card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px 20px; min-width: 150px; box-shadow: var(--shadow); }
.stat-card .num { font-size: 26px; font-weight: 700; }
.stat-card .lbl { color: var(--muted); font-size: 12px; margin-top: 4px; }
.stat-card.ok .num { color: var(--ok); }
.stat-card.warn .num { color: var(--warn); }

/* ---------- 工具栏 ---------- */
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar input, .toolbar select { height: 36px; border: 1px solid var(--border); border-radius: 8px; padding: 0 10px; font-size: 13px; background: #fff; outline: none; }
.toolbar input:focus, .toolbar select:focus { border-color: var(--primary); }

/* ---------- 表格 ---------- */
.table-wrap { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; overflow: auto; box-shadow: var(--shadow); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { background: #fafbfc; color: var(--muted); font-weight: 600; position: sticky; top: 0; }
tbody tr:hover { background: #f8fafd; }
.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.tag.A { background: #e8f0ff; color: #2256c4; }
.tag.B { background: #e6f7ee; color: #1f9d55; }
.tag.C { background: #fff3e0; color: #c9821a; }
.tag.D { background: #fde8e8; color: #e0483c; }
.tag.yes { background: #e6f7ee; color: #1f9d55; }
.tag.no { background: #f1f3f5; color: #98a2b3; }
.status-active { color: var(--ok); font-weight: 600; }
.status-expired { color: var(--danger); font-weight: 600; }
.row-actions { display: flex; gap: 6px; }
.empty { padding: 40px; text-align: center; color: var(--muted); }

/* ---------- 按钮 ---------- */
.btn { border: 1px solid var(--border); background: #fff; color: var(--text); height: 36px; padding: 0 16px; border-radius: 8px; cursor: pointer; font-size: 13px; }
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-d); color: #fff; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--danger); border-color: transparent; }
.btn-danger { background: #fff; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { height: 30px; padding: 0 10px; font-size: 12px; }
.btn-block { width: 100%; height: 42px; margin-top: 8px; font-size: 15px; }

/* ---------- 弹窗 / 表单 ---------- */
.modal { position: fixed; inset: 0; background: rgba(16, 24, 40, .45); display: flex; align-items: center; justify-content: center; z-index: 50; }
.modal-box { background: #fff; width: 560px; max-width: 92vw; max-height: 90vh; overflow: auto; border-radius: 14px; box-shadow: 0 20px 50px rgba(16, 24, 40, .25); }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border); font-weight: 600; }
.modal-close { border: none; background: transparent; font-size: 22px; cursor: pointer; color: var(--muted); line-height: 1; }
.modal-body { padding: 20px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.form-grid .full { grid-column: 1 / -1; }
.form-grid label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.form-grid input, .form-grid select { width: 100%; height: 38px; border: 1px solid var(--border); border-radius: 8px; padding: 0 10px; font-size: 13px; outline: none; }
.form-grid input:focus, .form-grid select:focus { border-color: var(--primary); }
.form-grid textarea { width: 100%; border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; font-size: 13px; outline: none; resize: vertical; min-height: 60px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 14px 20px; border-top: 1px solid var(--border); }

/* ---------- toast ---------- */
.toast { position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%); background: #1f2733; color: #fff; padding: 10px 18px; border-radius: 8px; font-size: 13px; z-index: 100; box-shadow: var(--shadow); }