:root {
  --primary: #1677ff;
  --bg: #f5f7fa;
  --side: #001529;
  --text: #1f1f1f;
  --danger: #d4380d;
  --warn: #faad14;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; color: var(--text); background: var(--bg); }
a { color: inherit; text-decoration: none; }
.login-body { min-height: 100vh; display: grid; place-items: center; background: linear-gradient(160deg, #e6f4ff, #f5f7fa 50%, #fff); }
.login-card { width: 380px; background: #fff; padding: 28px; border-radius: 12px; box-shadow: 0 8px 30px rgba(0,0,0,.08); }
.login-card h1 { margin: 0 0 4px; }
.login-card .sub { color: #888; margin-bottom: 20px; }
.login-card label { display: block; margin: 10px 0 4px; font-size: 13px; }
.login-card input { width: 100%; padding: 10px; border: 1px solid #d9d9d9; border-radius: 6px; }
.login-card button { width: 100%; margin-top: 16px; padding: 10px; background: var(--primary); color: #fff; border: 0; border-radius: 6px; cursor: pointer; }
.login-card .error { color: var(--danger); }
.login-card .hint { font-size: 12px; color: #999; margin-top: 12px; }

.app { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: var(--side); color: #fff; padding: 16px 0; flex-shrink: 0; }
.sidebar .brand { font-weight: 700; padding: 8px 20px 16px; }
.sidebar .user { font-size: 12px; color: #aaa; padding: 0 20px 16px; }
.sidebar a { display: block; padding: 12px 20px; color: #ddd; }
.sidebar a:hover, .sidebar a.active { background: #1677ff33; color: #fff; }
.sidebar .logout { margin-top: 24px; color: #faad14; }
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.top { display: flex; justify-content: space-between; align-items: center; padding: 12px 20px; background: #fff; border-bottom: 1px solid #eee; }
.top h2 { margin: 0; font-size: 18px; }
.content { padding: 16px 20px 40px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; margin-bottom: 16px; }
.card { background: #fff; border-radius: 10px; padding: 14px; }
.card .label { font-size: 12px; color: #888; }
.card .value { font-size: 24px; font-weight: 700; margin-top: 6px; }
.card.warn { background: #fff1f0; }
.panel { background: #fff; border-radius: 10px; padding: 16px; margin-bottom: 12px; }
.panel h3 { margin: 0 0 10px; font-size: 15px; }
.primary { color: var(--primary); }
.danger { color: var(--danger); }
.muted { color: #999; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar input, .toolbar select, dialog input, dialog select, dialog textarea {
  padding: 8px 10px; border: 1px solid #d9d9d9; border-radius: 6px;
}
button, .toolbar button { padding: 8px 12px; border: 1px solid #d9d9d9; background: #fff; border-radius: 6px; cursor: pointer; }
button.primary, .toolbar .primary { background: var(--primary); color: #fff; border-color: var(--primary); }
button.danger { color: var(--danger); }
table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 10px; overflow: hidden; }
th, td { padding: 10px 12px; border-bottom: 1px solid #f0f0f0; text-align: left; font-size: 13px; }
th { background: #fafafa; }
.tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.tabs a { padding: 8px 14px; background: #fff; border-radius: 6px; }
.tabs a.active { background: var(--primary); color: #fff; }
.tag { font-size: 12px; padding: 2px 8px; border-radius: 999px; background: #e6f4ff; }
.tag.WARNING { background: #fff7e6; color: #d48806; }
.tag.OVERDUE { background: #fff1f0; color: var(--danger); }
.row-between { display: flex; justify-content: space-between; align-items: center; }
dialog { border: 0; border-radius: 12px; padding: 20px; width: min(560px, 92vw); max-height: 90vh; overflow: auto; }
dialog::backdrop { background: rgba(0,0,0,.35); }
dialog label { display: block; margin: 8px 0 4px; font-size: 13px; }
dialog input, dialog select, dialog textarea { width: 100%; }
dialog textarea { min-height: 64px; }
.dlg-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
.item-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.item-card { background: #f8fafc; border-radius: 8px; padding: 10px; }
.order-btn { padding: 2px 8px; margin-left: 4px; }
.lease-form { width: min(720px, 92vw); }
.upload-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 8px; }
.upload-row input[type=file] { max-width: 260px; }
.file-row { display: flex; gap: 10px; align-items: center; font-size: 13px; margin: 4px 0; }
.file-row a { color: var(--primary); }
.hint { font-size: 12px; color: #999; margin: 4px 0 8px; }
@media (max-width: 800px) {
  .sidebar { width: 64px; }
  .sidebar .brand, .sidebar .user, .sidebar a { font-size: 0; padding-left: 12px; }
  .item-grid { grid-template-columns: 1fr; }
}