:root {
  --bg: #FDF8F3;
  --card: #FFFFFF;
  --ink: #3D2B24;
  --ink2: #7A665D;
  --line: #EBDDD2;
  --pri: #5D3A31;
  --pri-soft: #F3E9E2;
  --accent: #C69C7A;
  --accent-soft: #F8F0E8;
  --ok: #4A7C59;
  --ok-soft: #E8F3EB;
  --warn: #B87A34;
  --warn-soft: #FDF3E8;
  --bad: #B54A4A;
  --bad-soft: #F9E8E8;
  --c-hj: #8B5A2B;
  --c-hy: #A67B5B;
  --c-lkx: #5D4037;
  --c-qy: #C69C7A;
  --c-other: #7D6E63;
  --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; cursor: pointer; border: none; }
input, select, textarea { font-family: inherit; font-size: 15px; }

/* ---------- 布局 ---------- */
#app { max-width: 980px; margin: 0 auto; padding: 16px 14px 80px; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; margin-bottom: 16px; flex-wrap: wrap;
}
.topbar .brand { font-size: 18px; font-weight: 700; display: flex; align-items: center; gap: 10px; color: var(--pri); }
.topbar .brand img { width: 38px; height: 38px; border-radius: 50%; object-fit: cover; background: var(--pri-soft); border: 2px solid var(--line); }
.topbar .who { font-size: 13px; color: var(--ink2); display: flex; align-items: center; gap: 10px; }
.topbar .who b { color: var(--ink); }
.btn-ghost { background: #fff; border: 1px solid var(--line); color: var(--ink2); border-radius: 8px; padding: 6px 12px; font-size: 13px; }
.btn-ghost:hover { border-color: var(--accent); color: var(--pri); }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card); border-radius: var(--radius);
  padding: 18px; box-shadow: 0 2px 8px rgba(93, 58, 49, .06);
  margin-bottom: 14px; border: 1px solid var(--line);
}
.card h3 { font-size: 16px; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; color: var(--pri); }
.card h3 .tag { font-size: 12px; font-weight: 500; color: var(--ink2); background: var(--bg); padding: 2px 8px; border-radius: 20px; }

/* ---------- 登录 ---------- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; background: linear-gradient(180deg, #FDF8F3 0%, #F3E9E2 100%); }
.login-card { width: 100%; max-width: 380px; background: var(--card); border-radius: 20px; padding: 34px 30px; box-shadow: 0 10px 40px rgba(93, 58, 49, .12); border: 1px solid var(--line); }
.login-card .logo-big { width: 80px; height: 80px; border-radius: 50%; margin: 0 auto 14px; object-fit: cover; background: var(--pri-soft); border: 3px solid var(--line); }
.login-card h1 { text-align: center; font-size: 22px; margin-bottom: 4px; color: var(--pri); }
.login-card .sub { text-align: center; color: var(--ink2); font-size: 13px; margin-bottom: 24px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--ink2); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px;
  padding: 11px 12px; background: #FFFBF8; outline: none; color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); background: #fff; }
.btn-main {
  width: 100%; background: var(--pri); color: #fff; border-radius: 10px;
  padding: 12px; font-size: 16px; font-weight: 600;
}
.btn-main:active { opacity: .9; }
.btn-main:disabled { opacity: .5; cursor: not-allowed; }
.btn-accent { background: var(--accent); color: #fff; border-radius: 10px; padding: 10px 16px; font-weight: 600; }
.btn-accent:active { opacity: .9; }
.btn-soft { background: var(--pri-soft); color: var(--pri); border-radius: 10px; padding: 10px 16px; font-weight: 600; }
.btn-sm { padding: 7px 12px; font-size: 13px; border-radius: 8px; }
.login-err { color: var(--bad); font-size: 13px; text-align: center; min-height: 18px; margin-bottom: 6px; }
.login-hint { margin-top: 18px; font-size: 12px; color: var(--ink2); background: var(--bg); border-radius: 10px; padding: 10px 12px; line-height: 1.7; }

/* ---------- 统计 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.stat {
  background: var(--card); border-radius: var(--radius); padding: 14px 16px;
  border: 1px solid var(--line);
}
.stat .num { font-size: 22px; font-weight: 700; color: var(--pri); margin: 4px 0 2px; }
.stat .num.small { font-size: 16px; }
.stat .lbl { font-size: 12px; color: var(--ink2); }
.stat .sub-stat { font-size: 11px; color: var(--ink2); margin-top: 4px; opacity: .9; }
.stat.ok { background: var(--ok-soft); border-color: #D3E7D9; }
.stat.ok .num { color: var(--ok); }
.stat.warn { background: var(--warn-soft); border-color: #F3E2CD; }
.stat.warn .num { color: var(--warn); }
.stat.bad { background: var(--bad-soft); border-color: #F2D5D5; }
.stat.bad .num { color: var(--bad); }

/* ---------- 校区卡片 ---------- */
.campus-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-bottom: 14px; }
.campus-card {
  background: var(--card); border-radius: var(--radius); padding: 16px;
  border: 1px solid var(--line); box-shadow: 0 2px 8px rgba(93, 58, 49, .05);
}
.campus-card h4 { font-size: 15px; display: flex; align-items: center; gap: 8px; margin-bottom: 10px; color: var(--pri); }
.campus-card .dot { width: 10px; height: 10px; border-radius: 50%; }
.campus-card .row { display: flex; justify-content: space-between; font-size: 13px; margin: 5px 0; color: var(--ink2); }
.campus-card .row b { color: var(--ink); }
.campus-card .progress { height: 6px; background: var(--pri-soft); border-radius: 3px; margin-top: 10px; overflow: hidden; }
.campus-card .progress i { display: block; height: 100%; border-radius: 3px; }

/* ---------- tab ---------- */
.tabs { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 14px; }
.tab {
  white-space: nowrap; padding: 9px 16px; border-radius: 10px; font-size: 14px;
  background: #fff; color: var(--ink2); border: 1px solid var(--line); font-weight: 500;
}
.tab.active { background: var(--pri); color: #fff; border-color: var(--pri); }

/* ---------- 表格/列表 ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--ink2); font-weight: 600; background: var(--bg); position: sticky; top: 0; }
tr:hover td { background: var(--pri-soft); }
.td-money { font-weight: 600; color: var(--pri); text-align: right; }
.td-date { color: var(--ink2); white-space: nowrap; }
.tag-pill {
  display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 12px;
  background: var(--accent-soft); color: var(--accent); font-weight: 500;
}
.tag-pill.ok { background: var(--ok-soft); color: var(--ok); }
.tag-pill.warn { background: var(--warn-soft); color: var(--warn); }
.tag-pill.bad { background: var(--bad-soft); color: var(--bad); }

/* ---------- 记录行（卡片式） ---------- */
.rec-row {
  display: flex; align-items: center; gap: 10px; padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.rec-row:last-child { border-bottom: none; }
.rec-row .avatar { width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; color: #fff; font-weight: 700; flex-shrink: 0; }
.rec-row .info { flex: 1; min-width: 0; }
.rec-row .info .name { font-weight: 600; color: var(--ink); }
.rec-row .info .meta { font-size: 12px; color: var(--ink2); margin-top: 2px; }
.rec-row .money { font-weight: 700; color: var(--pri); font-size: 15px; text-align: right; }
.rec-row .actions { display: flex; gap: 6px; }

/* ---------- 校区明细学生行 ---------- */
.stu-row {
  display: flex; align-items: center; gap: 10px; padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.stu-row:last-child { border-bottom: none; }
.stu-row .avatar { width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 13px; color: #fff; font-weight: 700; flex-shrink: 0; background: var(--pri); }
.stu-row .info { flex: 1; min-width: 0; }
.stu-row .info .name { font-weight: 600; color: var(--ink); display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.stu-row .info .meta { font-size: 12px; color: var(--ink2); margin-top: 2px; }
.stu-row .amount { font-weight: 700; color: var(--pri); font-size: 15px; text-align: right; margin-right: 8px; }
.stu-recs { background: var(--bg); border-radius: 10px; padding: 0 10px; margin: 0; }
.stu-recs .rec-row { padding: 10px 0; }
.stu-recs .rec-row .avatar { width: 28px; height: 28px; font-size: 11px; }
.status { font-size: 11px; padding: 1px 6px; border-radius: 10px; font-weight: 500; }
.status.ok { background: var(--ok-soft); color: var(--ok); }
.status.warn { background: var(--warn-soft); color: var(--warn); }
.status { background: var(--pri-soft); color: var(--ink2); }

/* ---------- 学员信息卡 ---------- */
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 4px; }
.section-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.search-wrap { display: flex; align-items: stretch; border: 1px solid var(--line); border-radius: 8px; background: #FFFBF8; overflow: hidden; }
.search-wrap .search-input { border: none; outline: none; background: transparent; padding: 7px 10px; width: 130px; font-size: 14px; color: var(--ink); }
.search-wrap .search-input:focus { background: #fff; }
.search-btn { background: var(--pri-soft); color: var(--pri); border: none; padding: 0 10px; display: flex; align-items: center; cursor: pointer; }
.search-btn:hover { background: var(--accent-soft); }
.search-clear { background: transparent; border: none; border-right: 1px solid var(--line); color: #9e8c82; font-size: 18px; padding: 0 8px; cursor: pointer; line-height: 1; }
.search-clear:hover { color: #B54A4A; background: #fff; }
.filter-chips { display: flex; gap: 8px; margin-top: 12px; }
.chip { border: 1px solid var(--line); background: #FFFBF8; color: var(--ink); border-radius: 999px; padding: 5px 14px; font-size: 13px; cursor: pointer; }
.chip:hover { border-color: var(--pri); color: var(--pri); }
.chip-on { background: var(--pri); border-color: var(--pri); color: #fff; font-weight: 600; }
.chip-on:hover { color: #fff; }
.term-sel { border: 1px solid var(--line); border-radius: 8px; background: #FFFBF8; padding: 7px 10px; font-size: 13px; color: var(--ink); outline: none; }
.stu-card {
  background: var(--bg); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px; margin: 0 0 12px 44px;
}
.stu-card-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px;
}
.stu-card-item { display: flex; flex-direction: column; gap: 3px; }
.stu-card-item span { font-size: 12px; color: var(--ink2); }
.stu-card-item b { font-size: 14px; color: var(--ink); font-weight: 600; }
.fee-hint { font-size: 12px; color: var(--accent, #C69C7A); margin-top: 4px; min-height: 14px; }
.price-note { font-size: 12px; color: var(--ink2); background: var(--pri-soft, #F8F0E8); border-radius: 8px; padding: 8px 12px; margin-bottom: 14px; line-height: 1.6; }
.stu-recs-title { font-size: 12px; color: var(--ink2); margin: 14px 0 6px; padding-left: 2px; }
.form-block .field { margin-bottom: 0; }
.stu-card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.stu-card-title { font-size: 12px; font-weight: 700; color: var(--ink2); letter-spacing: 1px; }
.stu-card-btns { display: flex; gap: 8px; }
.stu-card-btns .btn-soft, .stu-card-btns .btn-ghost { padding: 5px 12px; font-size: 12px; }
.btn-danger { color: #C0392B; border-color: #E8C5C0; }
.btn-danger:hover { background: #F9ECEA; }
.stu-edit { margin: -6px 0 12px 44px; }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.form-actions { display: flex; gap: 10px; margin-top: 16px; }
.form-actions .btn-main { width: auto; flex: 1; }
.preview-thumb { width: 64px; height: 64px; object-fit: cover; border-radius: 8px; border: 1px solid var(--line); margin-top: 8px; }
.op-toggle { display: flex; gap: 8px; margin-bottom: 14px; }
.op-toggle button { flex: 1; padding: 10px; border-radius: 10px; background: #fff; border: 1px solid var(--line); color: var(--ink2); font-weight: 600; }
.op-toggle button.active { background: var(--pri); color: #fff; border-color: var(--pri); }
.op-toggle button.active.bad { background: var(--bad); color: #fff; border-color: var(--bad); }

/* ---------- 花名册/名单 ---------- */
.roster-section { margin-bottom: 18px; }
.roster-section h4 { font-size: 14px; color: var(--pri); margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.roster-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 8px; }
.roster-chip {
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 9px 8px; text-align: center; font-size: 13px; cursor: pointer;
}
.roster-chip:hover { border-color: var(--accent); }
.roster-chip .name { font-weight: 600; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.roster-chip .sub { font-size: 11px; color: var(--ink2); margin-top: 2px; }
.roster-chip.paid { background: var(--ok-soft); border-color: #D3E7D9; }
.roster-chip.unpaid { background: var(--warn-soft); border-color: #F3E2CD; }

/* ---------- 应收清单 ---------- */
.due-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px;
  background: #fff; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 8px;
}
.due-item .name { flex: 1; font-weight: 600; }
.due-item .type { font-size: 12px; color: var(--ink2); }
.due-item .amt { font-weight: 700; color: var(--warn); }
.due-item .btn { background: var(--ok); color: #fff; border-radius: 6px; padding: 5px 10px; font-size: 12px; }

/* ---------- 图表 ---------- */
.chart { display: flex; align-items: flex-end; gap: 8px; height: 160px; padding: 10px 0; }
.bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.bar { width: 100%; border-radius: 6px 6px 0 0; min-height: 4px; position: relative; display: flex; flex-direction: column-reverse; overflow: hidden; }
.bar-val { font-size: 11px; font-weight: 600; color: var(--pri); }
.bar-lbl { font-size: 11px; color: var(--ink2); }

/* ---------- 截图 ---------- */
.shot-thumb { width: 40px; height: 40px; object-fit: cover; border-radius: 6px; cursor: pointer; border: 1px solid var(--line); }
.shot-modal { position: fixed; inset: 0; background: rgba(0,0,0,.75); display: flex; align-items: center; justify-content: center; z-index: 100; padding: 20px; }
.shot-modal img { max-width: 100%; max-height: 90vh; border-radius: 10px; }

/* ---------- 提示 ---------- */
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 10px;
  font-size: 13px; z-index: 99; box-shadow: 0 4px 16px rgba(0,0,0,.15);
}
.empty { text-align: center; color: var(--ink2); padding: 30px; font-size: 13px; }

/* ---------- 响应式 ---------- */
@media (max-width: 600px) {
  #app { padding: 12px 10px 80px; }
  .topbar .brand { font-size: 16px; }
  .topbar .brand img { width: 32px; height: 32px; }
  .campus-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .roster-grid { grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); }
}

/* ===== v5.0 经营分析 / 现金流 / 收支台账 ===== */
.ledger-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 12px; }
.ledger-bar .filter-chips { margin-top: 0; }
.ledger-bar select { border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; font-size: 13px; background: #fff; color: var(--ink); }
.money-in { color: var(--ok); }
.money-out { color: var(--bad); }
.month-sel { border: 1px solid var(--line); border-radius: 8px; padding: 4px 10px; font-size: 13px; background: #fff; color: var(--ink); }
.growth-line { margin-top: 12px; font-size: 13px; color: var(--ink2); background: var(--bg); border-radius: 8px; padding: 8px 12px; }
.td-in { color: var(--ok) !important; }
.td-out { color: var(--bad) !important; }
.tr-total { background: var(--pri-soft); }
.tr-total td { font-weight: 600; }
.trend-chart { display: flex; gap: 10px; align-items: flex-end; height: 160px; padding: 10px 4px 0; }
.trend-col { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; }
.trend-bars { display: flex; gap: 5px; align-items: flex-end; height: 100px; }
.trend-bar { width: 16px; border-radius: 4px 4px 0 0; min-height: 2px; }
.trend-bar.in { background: var(--ok); opacity: .85; }
.trend-bar.out { background: var(--bad); opacity: .85; }
.trend-val { font-size: 12px; color: var(--ink2); margin-top: 6px; }
.trend-val.small { font-size: 11px; margin-top: 0; font-weight: 600; }
.trend-legend { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ink2); margin-top: 10px; }
.trend-legend .lg { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-left: 10px; }
.trend-legend .lg:first-child { margin-left: 0; }
.trend-legend .lg.in { background: var(--ok); }
.trend-legend .lg.out { background: var(--bad); }
.cash-empty { text-align: center; padding: 18px 10px; }
.cash-empty p { font-size: 13px; color: var(--ink2); line-height: 1.7; margin-bottom: 12px; }
.shot-preview { max-width: 120px; max-height: 120px; border-radius: 8px; margin-top: 8px; border: 1px solid var(--line); }