:root {
  --bg: #0f172a; --bg2: #16213e; --panel: #1a2540; --panel2: #22304f;
  --line: #2a3a5c; --text: #e6edf7; --muted: #94a3b8;
  --pri: #3b82f6; --pri2: #2563eb; --ok: #22c55e; --warn: #f59e0b; --bad: #ef4444;
  --radius: 10px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }
a { color: var(--pri); text-decoration: none; }
h1,h2,h3 { margin: 0 0 12px; font-weight: 600; }

/* 登录 */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: radial-gradient(1200px 600px at 20% 10%, #1e3a8a55, transparent), var(--bg); }
.login-card { width: 380px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 32px; box-shadow: 0 20px 60px #0008; }
.login-card h1 { font-size: 22px; text-align: center; margin-bottom: 4px; }
.login-sub { text-align: center; color: var(--muted); font-size: 12px; margin-bottom: 22px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.field label .req { color: #f87171; font-style: normal; margin-right: 3px; }
input, select, textarea { width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); background: #0d1526; color: var(--text); font-size: 14px; outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--pri); }
input.invalid, select.invalid, textarea.invalid { border-color: #f87171 !important; }
/* 字段级错误提示（个人信息维护等表单：输入框下方红字，不留空白跳动） */
.ferr { color: #f87171; font-size: 11px; line-height: 1.4; margin-top: 4px; min-height: 14px; }
/* 密码框：默认掩码 + 显示/隐藏切换（切换仅改 type，不影响粘贴/自动填充/提交值） */
.pwdwrap { position: relative; }
.pwdwrap input { padding-right: 62px; }
.pwdtoggle { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); border: none; background: transparent; color: var(--muted); cursor: pointer; font-size: 16px; padding: 4px 6px; line-height: 1; user-select: none; }
.pwdtoggle:hover { color: var(--text); }
.imgup { display: flex; gap: 10px; align-items: flex-start; }
.imgup input[type=file] { flex: 1; padding: 6px; }
.imgprev { width: 88px; height: 88px; object-fit: cover; border-radius: 8px; border: 1px solid var(--line); cursor: zoom-in; }
.btn { padding: 9px 14px; border-radius: 8px; border: 1px solid var(--line); background: var(--panel2); color: var(--text); cursor: pointer; font-size: 13px; }
.btn:hover { border-color: var(--pri); }
.btn.pri { background: var(--pri); border-color: var(--pri); color: #fff; }
.btn.pri:hover { background: var(--pri2); }
.btn.ok { background: #166534; border-color: #166534; color: #fff; }
.btn.warn { background: #92400e; border-color: #92400e; color: #fff; }
.btn.bad { background: #991b1b; border-color: #991b1b; color: #fff; }
.btn.sm { padding: 4px 8px; font-size: 12px; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }
.accounts { margin-top: 18px; font-size: 12px; color: var(--muted); border-top: 1px dashed var(--line); padding-top: 12px; }
.accounts b { color: var(--text); }

/* 布局 */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 216px; background: var(--bg2); border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.logo { padding: 18px; font-size: 16px; font-weight: 700; border-bottom: 1px solid var(--line); }
.logo small { display: block; font-size: 11px; color: var(--muted); font-weight: 400; margin-top: 4px; }
.menu { flex: 1; overflow: auto; padding: 8px; }
.menu-item { padding: 9px 12px; border-radius: 8px; cursor: pointer; color: var(--muted); display: flex; justify-content: space-between; align-items: center; }
.menu-item:hover { background: #ffffff0a; color: var(--text); }
.menu-item.active { background: var(--pri); color: #fff; }
.sidebar-foot { padding: 10px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar { height: 56px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; padding: 0 18px; background: var(--bg2); }
.topbar .who { font-size: 13px; color: var(--muted); }
.content { padding: 18px; overflow: auto; flex: 1; }

/* 卡片 / 表格 */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.card .k { font-size: 12px; color: var(--muted); }
.card .v { font-size: 24px; font-weight: 700; margin-top: 6px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; margin-bottom: 16px; }
.panel h3 { font-size: 15px; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 12px; }
.toolbar input, .toolbar select { width: auto; min-width: 150px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; font-size: 13px; white-space: nowrap; }
th { color: var(--muted); font-weight: 500; background: #ffffff08; }
tbody tr:hover { background: #ffffff08; }
.badge { padding: 2px 8px; border-radius: 20px; font-size: 12px; border: 1px solid transparent; }
.badge.ok { background: #16653455; color: #86efac; border-color: #16653488; }
.badge.warn { background: #92400e55; color: #fcd34d; border-color: #92400e88; }
.badge.bad { background: #991b1b55; color: #fca5a5; border-color: #991b1b88; }
.badge.gray { background: #33415555; color: #cbd5e1; border-color: #33415588; }
.muted { color: var(--muted); }
.empty { padding: 30px; text-align: center; color: var(--muted); }
.pager { display: flex; gap: 8px; align-items: center; justify-content: flex-end; margin-top: 12px; font-size: 13px; }

/* 弹窗 */
.mask { position: fixed; inset: 0; background: #000a; display: flex; align-items: center; justify-content: center; z-index: 50; padding: 20px; }
.modal { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; width: 720px; max-width: 100%; max-height: 86vh; overflow: auto; }
.modal header { padding: 14px 18px; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; }
.modal .body { padding: 18px; }
.modal footer { padding: 12px 18px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; gap: 8px; }
.close { cursor: pointer; color: var(--muted); font-size: 18px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.kv { display: grid; grid-template-columns: 96px 1fr; gap: 6px 10px; font-size: 13px; }
.kv .k { color: var(--muted); }
.tabs { display: flex; gap: 6px; margin-bottom: 12px; flex-wrap: wrap; }
.tab { padding: 6px 12px; border-radius: 20px; border: 1px solid var(--line); cursor: pointer; color: var(--muted); font-size: 13px; }
.tab.active { background: var(--pri); color: #fff; border-color: var(--pri); }
.bar { height: 8px; background: var(--panel2); border-radius: 6px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--pri); }
.toast { position: fixed; right: 20px; bottom: 20px; background: #0b1220e6; border: 1px solid var(--line); padding: 10px 16px; border-radius: 8px; z-index: 99; }
.qrimg { width: 160px; height: 160px; background: #fff; border-radius: 8px; padding: 6px; }
.note { font-size: 12px; color: var(--muted); line-height: 1.7; }

/* 开班地点表单编辑器 */
.pfcard { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin-bottom: 10px; background: var(--panel2); }
.pfhead { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; font-size: 13px; }
.pfops { display: flex; gap: 6px; }
.pfcard .field { margin-bottom: 6px; }
.pfcard input, .pfcard select, .pfcard textarea { padding: 6px 8px; font-size: 13px; }