:root {
  --primary: #1a66ff;
  --primary-soft: #e8f0ff;
  --bg: #f3f6fc;
  --panel: #ffffff;
  --text: #1b2b4b;
  --muted: #8b95a8;
  --border: rgba(26, 102, 255, 0.1);
  --danger: #ff4d4f;
  --warn: #fa8c16;
  --ok: #1dbf73;
  --sidebar: 220px;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(27, 43, 75, 0.06);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

#toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%) translateY(20px);
  background: rgba(27, 43, 75, 0.92);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: .2s;
  z-index: 9999;
  font-size: 14px;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---- login ---- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #5b8cff 0%, #1a66ff 48%, #0b3fcc 100%);
  padding: 24px;
}
.login-card {
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: 16px;
  padding: 36px 32px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);
}
.login-card h1 { margin: 0 0 8px; font-size: 24px; }
.login-card .sub { color: var(--muted); margin-bottom: 28px; font-size: 14px; line-height: 1.5; }
.form-item { margin-bottom: 16px; }
.form-item label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.form-item input, .form-item select, .form-item textarea {
  width: 100%;
  border: 1px solid #dbe3f0;
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
  background: #fff;
}
.form-item input:focus, .form-item select:focus, .form-item textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 102, 255, 0.12);
}

/* ---- shell ---- */
.app-shell { display: none; min-height: 100vh; }
.app-shell.show { display: flex; flex-direction: column; }
.topbar {
  height: 56px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { font-weight: 700; font-size: 16px; }
.brand span { color: var(--muted); font-weight: 500; margin-left: 10px; font-size: 13px; }
.top-user { color: var(--muted); font-size: 13px; }
.layout { display: flex; flex: 1; min-height: 0; }
.sidebar {
  width: var(--sidebar);
  background: #fff;
  border-right: 1px solid var(--border);
  padding: 16px 12px;
  flex-shrink: 0;
}
.nav-item {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--text);
  padding: 12px 14px;
  border-radius: 10px;
  margin-bottom: 4px;
  font-weight: 500;
}
.nav-item:hover { background: var(--primary-soft); }
.nav-item.active { background: var(--primary); color: #fff; }
.content {
  flex: 1;
  padding: 20px 24px 40px;
  overflow: auto;
}
.page { display: none; }
.page.active { display: block; }

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.page-head h2 { margin: 0; font-size: 20px; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.search-input {
  min-width: 260px;
  border: 1px solid #dbe3f0;
  border-radius: 10px;
  padding: 9px 12px;
  background: #fff;
}
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  border: 1px solid #dbe3f0;
  background: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--muted);
}
.chip.active { background: var(--primary-soft); border-color: transparent; color: var(--primary); font-weight: 600; }

.btn {
  border: none;
  border-radius: 10px;
  padding: 9px 16px;
  font-weight: 600;
  font-size: 14px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost { background: #fff; border: 1px solid #dbe3f0; color: var(--text); }
.btn-danger { background: #fff1f0; color: var(--danger); border: 1px solid #ffccc7; }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 8px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

.card {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 16px;
}
.card + .card { margin-top: 16px; }

.table-wrap { overflow: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 960px;
}
table.data th, table.data td {
  padding: 12px 10px;
  border-bottom: 1px solid #eef2f8;
  text-align: left;
  white-space: nowrap;
}
table.data th {
  background: #f7f9fd;
  color: var(--muted);
  font-weight: 600;
  position: sticky;
  top: 0;
}
table.data th.sortable {
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}
table.data th.sortable:hover {
  color: var(--primary);
  background: #eef4ff;
}
table.data th.sortable.sorted {
  color: var(--primary);
}
table.data tr:hover td { background: #f8fbff; }
table.data td.right, table.data th.right { text-align: right; }
table.data td.money { font-variant-numeric: tabular-nums; }
table.data td.neg { color: var(--danger); font-weight: 600; }
table.data .name-cell { white-space: normal; min-width: 180px; }

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  margin-left: 6px;
  font-weight: 600;
}
.tag.warn { background: #fff7e6; color: var(--warn); }
.tag.danger { background: #fff1f0; color: var(--danger); }
.tag.gray { background: #f0f2f5; color: #667085; }
.tag.ok { background: #e8faf1; color: var(--ok); }

.empty { padding: 48px; text-align: center; color: var(--muted); }
.muted { color: var(--muted); }
.linkish { color: var(--primary); cursor: pointer; font-weight: 600; }
.linkish:hover { text-decoration: underline; }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}
.metric {
  background: #f7f9fd;
  border-radius: 12px;
  padding: 14px;
}
.metric .label { color: var(--muted); font-size: 12px; margin-bottom: 6px; }
.metric .value { font-size: 20px; font-weight: 700; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.tab-btn {
  border: none;
  background: transparent;
  padding: 10px 16px;
  color: var(--muted);
  font-weight: 600;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 18px;
}
.form-grid .full { grid-column: 1 / -1; }
.indent-0 { padding-left: 0; }
.indent-1 { padding-left: 18px; }
.indent-2 { padding-left: 36px; font-weight: 500; }
.subject-group td { background: #fafcff; font-weight: 600; }

.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.modal-mask.show { display: flex; }
.modal {
  width: min(560px, 100%);
  background: #fff;
  border-radius: 14px;
  padding: 22px;
  max-height: 90vh;
  overflow: auto;
}
.modal.modal-wide {
  width: min(920px, 96vw);
  min-height: 520px;
  max-height: 92vh;
}
.modal h3 { margin: 0 0 16px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

.import-card .import-row {
  margin-top: 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}
.file-picker {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  width: 100%;
}
.file-picker input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  overflow: hidden;
  z-index: -1;
}
.file-name {
  flex: 1;
  min-width: 200px;
  font-size: 13px;
  color: var(--text);
  line-height: 1.5;
  word-break: break-all;
  padding-top: 8px;
}
.import-result {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.7;
}
.import-result ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--danger);
}

.detail-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.editable-input {
  width: 110px;
  border: 1px solid #dbe3f0;
  border-radius: 8px;
  padding: 6px 8px;
  text-align: right;
}
.role-list label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px solid #f0f2f5;
}
.role-list label:last-child { border-bottom: none; }
.check-list label {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 6px 0;
  font-size: 13px;
}

@media (max-width: 960px) {
  .sidebar { width: 180px; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
}