:root {
  --bg: #f4f6fa;
  --side: #1f2a44;
  --side-2: #18213a;
  --side-hover: #2c3a5e;
  --primary: #3b6ef5;
  --primary-d: #2f5ad0;
  --text: #232838;
  --muted: #8a93a6;
  --line: #e6e9f0;
  --card: #ffffff;
  --ok: #2bb673;
  --warn: #f0a020;
  --danger: #e5484d;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px;
}
a { color: inherit; text-decoration: none; }

/* 登录页 */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #2c3a5e 0%, #1f2a44 100%);
}
.login-card {
  width: 360px; background: #fff; border-radius: 14px; padding: 34px 30px;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.login-card h1 { font-size: 19px; margin: 0 0 4px; }
.login-card .sub { color: var(--muted); margin: 0 0 22px; font-size: 13px; }
.login-card label { display: block; font-size: 13px; margin: 12px 0 6px; color: #555; }
.login-card input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; outline: none;
}
.login-card input:focus { border-color: var(--primary); }
.login-card .err { color: var(--danger); font-size: 13px; min-height: 18px; margin-top: 10px; }
.login-card button {
  width: 100%; margin-top: 18px; padding: 11px; border: 0; border-radius: 8px; background: var(--primary);
  color: #fff; font-size: 15px; cursor: pointer;
}
.login-card button:hover { background: var(--primary-d); }
.login-tip { margin-top: 14px; font-size: 12px; color: var(--muted); text-align: center; }

/* 主框架 */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 232px; background: var(--side); color: #cdd5e6; flex-shrink: 0;
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.sidebar .brand {
  height: 58px; display: flex; align-items: center; gap: 10px; padding: 0 18px;
  background: var(--side-2); font-weight: 600; color: #fff; font-size: 15px;
}
.sidebar .brand .logo {
  width: 28px; height: 28px; border-radius: 7px; background: var(--primary);
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 14px;
}
.menu { flex: 1; overflow-y: auto; padding: 8px 0; }
.menu-group > .menu-item { font-weight: 600; }
.menu-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 18px; cursor: pointer;
  font-size: 14px; color: #cdd5e6; user-select: none;
}
.menu-item:hover { background: var(--side-hover); color: #fff; }
.menu-item.active { background: var(--side-hover); color: #fff; border-left: 3px solid var(--primary); padding-left: 15px; }
.menu-item .ico { width: 18px; height: 18px; flex-shrink: 0; }
.menu-item .arrow { margin-left: auto; transition: transform .15s; opacity: .6; }
.menu-item.collapsed .arrow { transform: rotate(-90deg); }
.menu-children { display: none; background: rgba(0,0,0,.15); }
.menu-children.open { display: block; }
.menu-children .menu-item { padding-left: 46px; font-weight: 400; font-size: 13.5px; }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
  height: 58px; background: #fff; border-bottom: 1px solid var(--line); display: flex;
  align-items: center; padding: 0 22px; position: sticky; top: 0; z-index: 20;
}
.topbar .title { font-size: 16px; font-weight: 600; }
.topbar .spacer { flex: 1; }
.topbar .user { display: flex; align-items: center; gap: 10px; cursor: pointer; position: relative; }
.topbar .avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 13px; }
.user-menu { position: absolute; right: 0; top: 44px; background: #fff; border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,.12); width: 150px; display: none; overflow: hidden; }
.user-menu.open { display: block; }
.user-menu div { padding: 10px 14px; font-size: 13px; }
.user-menu div:hover { background: var(--bg); }
.content { padding: 22px; }

/* 卡片 / 统计 */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 18px; }
.stat-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.stat-card .k { color: var(--muted); font-size: 13px; }
.stat-card .v { font-size: 26px; font-weight: 700; margin-top: 6px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.panel h3 { margin: 0 0 14px; font-size: 15px; }
.row { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.row .grow { flex: 1; }

/* 按钮 */
.btn { padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-size: 13px; color: var(--text); }
.btn:hover { border-color: #cfd5e0; }
.btn.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn.primary:hover { background: var(--primary-d); }
.btn.danger { color: var(--danger); border-color: #f3c2c4; }
.btn.sm { padding: 5px 10px; font-size: 12.5px; }
.input, select, textarea {
  padding: 8px 11px; border: 1px solid var(--line); border-radius: 8px; font-size: 13.5px; outline: none; background: #fff;
}
.input:focus, select:focus, textarea:focus { border-color: var(--primary); }

/* 表格 */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 12.5px; background: #fafbfe; }
tbody tr:hover { background: #fafbff; }
.tag { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 12px; }
.tag.ok { background: #e6f7ef; color: #1c9c63; }
.tag.warn { background: #fdf2dd; color: #b9791b; }
.tag.gray { background: #eef0f4; color: #6b7384; }
.pager { display: flex; align-items: center; gap: 12px; margin-top: 14px; color: var(--muted); font-size: 13px; }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }

/* 弹窗 */
.modal-mask { position: fixed; inset: 0; background: rgba(20,28,48,.45); display: none; align-items: flex-start; justify-content: center; z-index: 100; padding-top: 80px; }
.modal-mask.open { display: flex; }
.modal { width: 520px; max-width: 92vw; background: #fff; border-radius: 12px; overflow: hidden; }
.modal header { padding: 16px 20px; border-bottom: 1px solid var(--line); font-weight: 600; font-size: 15px; }
.modal .body { padding: 18px 22px; max-height: 72vh; overflow-y: auto; }
.modal footer { padding: 14px 20px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; gap: 10px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; margin-bottom: 6px; color: #555; }
.field .req { color: var(--danger); }
.field input, .field select, .field textarea { width: 100%; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* ---- 表单双列栅格（长弹窗分组排版用） ---- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; column-gap: 16px; align-items: start; }
.form-grid .field.wide { grid-column: 1 / -1; }
@media (max-width: 720px) { .form-grid { grid-template-columns: 1fr; } }

/* ---- 弹窗内分区 ---- */
.modal-section { margin-bottom: 6px; }
.modal-section h4 {
  margin: 10px 0 12px; font-size: 13.5px; font-weight: 600; color: var(--primary);
  padding: 6px 10px; background: #f0f5ff; border-radius: 6px;
}

/* toast */
.toast { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); background: #2b3245; color: #fff; padding: 10px 18px; border-radius: 8px; font-size: 13.5px; z-index: 200; opacity: 0; transition: opacity .2s; pointer-events: none; }
.toast.show { opacity: 1; }
.toast.err { background: var(--danger); }
.toast.ok { background: var(--ok); }