:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --bg: #f1f5f9;
  --sidebar: #0f172a;
  --sidebar-text: #cbd5e1;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --muted: #64748b;
  --success: #16a34a;
  --success-bg: #dcfce7;
  --warn: #d97706;
  --warn-bg: #fef3c7;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --info-bg: #dbeafe;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(15,23,42,.08), 0 4px 12px rgba(15,23,42,.06);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }

/* ---------- 登录页 ---------- */
#app.login-mode { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #1e3a8a, #2563eb 55%, #3b82f6); }
.login-card { background: #fff; border-radius: 16px; padding: 40px 44px; width: 380px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.login-card h1 { font-size: 22px; margin-bottom: 6px; color: var(--text); }
.login-card .sub { color: var(--muted); margin-bottom: 28px; }
.login-card input { width: 100%; padding: 11px 14px; margin-bottom: 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; }
.login-card input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.login-card button { width: 100%; padding: 11px; background: var(--primary); color: #fff; border: none; border-radius: 8px; font-size: 15px; cursor: pointer; }
.login-card button:hover { background: var(--primary-dark); }
.login-error { color: var(--danger); margin-top: 12px; font-size: 13px; min-height: 18px; }
.login-tip { margin-top: 18px; padding: 10px 12px; background: var(--info-bg); border-radius: 8px; color: #1e40af; font-size: 12px; }

/* ---------- 布局 ---------- */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: var(--sidebar); color: var(--sidebar-text); position: fixed; top: 0; bottom: 0; overflow-y: auto; z-index: 10; }
.sidebar .brand { padding: 20px 18px; font-size: 17px; font-weight: 700; color: #fff; border-bottom: 1px solid rgba(255,255,255,.08); display: flex; align-items: center; gap: 8px; }
.sidebar .brand .logo { width: 28px; height: 28px; background: var(--primary); border-radius: 7px; display: flex; align-items: center; justify-content: center; font-size: 15px; }
.sidebar nav a { display: flex; align-items: center; gap: 10px; padding: 11px 18px; color: var(--sidebar-text); text-decoration: none; font-size: 14px; border-left: 3px solid transparent; }
.sidebar nav a:hover { background: rgba(255,255,255,.06); color: #fff; }
.sidebar nav a.active { background: rgba(37,99,235,.25); color: #fff; border-left-color: var(--primary); }
.sidebar nav .nav-icon { width: 20px; text-align: center; }
.sidebar .side-foot { position: absolute; bottom: 0; width: 100%; padding: 14px 18px; border-top: 1px solid rgba(255,255,255,.08); font-size: 12px; color: #94a3b8; }
.main { margin-left: 220px; flex: 1; padding: 24px 28px; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.topbar h2 { font-size: 20px; }
.topbar .user-box { display: flex; align-items: center; gap: 10px; }
.topbar .avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 600; }
.topbar .logout { color: var(--muted); cursor: pointer; font-size: 13px; }
.topbar .logout:hover { color: var(--danger); }

/* ---------- 组件 ---------- */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin-bottom: 20px; }
.card h3 { font-size: 15px; margin-bottom: 14px; }
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar .spacer { flex: 1; }
select, input[type=text], input[type=number], input[type=date], input[type=password], textarea {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 7px; font-size: 13px; background: #fff; color: var(--text); }
select:focus, input:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
button { padding: 8px 14px; border: none; border-radius: 7px; font-size: 13px; cursor: pointer; background: var(--primary); color: #fff; transition: background .15s; }
button:hover { background: var(--primary-dark); }
button.secondary { background: #e2e8f0; color: var(--text); }
button.secondary:hover { background: #cbd5e1; }
button.success { background: var(--success); }
button.success:hover { background: #15803d; }
button.danger { background: var(--danger); }
button.danger:hover { background: #b91c1c; }
button.warn { background: var(--warn); }
button.warn:hover { background: #b45309; }
button.ghost { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
button.ghost:hover { background: var(--primary-light); }
button.sm { padding: 5px 10px; font-size: 12px; }
button:disabled { opacity: .5; cursor: not-allowed; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; padding: 10px 12px; background: #f8fafc; color: var(--muted); font-weight: 600; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:hover td { background: #f8fafc; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.empty { padding: 40px; text-align: center; color: var(--muted); }

.badge { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 12px; font-weight: 500; }
.badge.blue { background: var(--info-bg); color: #1d4ed8; }
.badge.green { background: var(--success-bg); color: var(--success); }
.badge.yellow { background: var(--warn-bg); color: var(--warn); }
.badge.red { background: var(--danger-bg); color: var(--danger); }
.badge.gray { background: #f1f5f9; color: var(--muted); }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 20px; }
.stat-card .label { color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.stat-card .value { font-size: 26px; font-weight: 700; }
.stat-card .value.green { color: var(--success); }
.stat-card .value.red { color: var(--danger); }
.stat-card .value.blue { color: var(--primary); }
.stat-card .value.orange { color: var(--warn); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 1100px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* ---------- 弹窗 ---------- */
.modal-mask { position: fixed; inset: 0; background: rgba(15,23,42,.5); display: flex; align-items: flex-start; justify-content: center; padding: 40px 20px; z-index: 100; overflow-y: auto; }
.modal { background: #fff; border-radius: 12px; width: 640px; max-width: 100%; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.modal.lg { width: 900px; }
.modal .modal-head { padding: 16px 22px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; font-size: 16px; font-weight: 600; }
.modal .modal-head .close { cursor: pointer; color: var(--muted); font-size: 20px; }
.modal .modal-body { padding: 20px 22px; }
.modal .modal-foot { padding: 14px 22px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; }
.form-grid .full { grid-column: 1 / -1; }
.form-item label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 5px; }
.form-item input, .form-item select, .form-item textarea { width: 100%; }
.form-item textarea { min-height: 56px; resize: vertical; }

/* ---------- 凭证分录行 ---------- */
.line-row { display: grid; grid-template-columns: 2fr 1fr 1fr 32px; gap: 8px; margin-bottom: 8px; align-items: center; }
.line-row .del { background: transparent; color: var(--danger); border: none; font-size: 17px; cursor: pointer; padding: 0; }

/* ---------- 进度条 ---------- */
.progress { height: 8px; background: #e2e8f0; border-radius: 99px; overflow: hidden; }
.progress > div { height: 100%; background: var(--primary); border-radius: 99px; }

/* ---------- 其他 ---------- */
.flex { display: flex; gap: 10px; align-items: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.muted { color: var(--muted); }
.tab-bar { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin-bottom: 16px; }
.tab-bar button { background: transparent; color: var(--muted); border: none; border-radius: 0; padding: 9px 16px; border-bottom: 2px solid transparent; margin-bottom: -2px; }
.tab-bar button.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tree-node { padding: 3px 0; }
.tree-node .tree-label { cursor: pointer; padding: 3px 6px; border-radius: 5px; }
.tree-node .tree-label:hover { background: var(--primary-light); }
.tree-children { margin-left: 22px; }
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 8px 12px; font-size: 13px; }
.kv dt { color: var(--muted); }
.kv dd { font-weight: 500; }