:root {
  color-scheme: light;
  --navy: #17233b;
  --blue: #246bfd;
  --blue-soft: #eaf1ff;
  --line: #e6eaf0;
  --muted: #6b7280;
  --surface: #fff;
  --bg: #f4f6f9;
  --danger: #c83532;
  --success: #11875d;
  font-family: Inter, "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; color: #202938; background: var(--bg); font-size: 14px; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.app-shell { min-height: 100vh; display: grid; grid-template-columns: 224px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; height: 100vh; overflow: auto; background: var(--navy); color: #fff; padding: 24px 14px; }
.brand { padding: 0 10px 24px; display: grid; gap: 3px; }
.brand strong { font-size: 20px; letter-spacing: 2px; }
.brand span { color: #adbad1; font-size: 12px; }
.sidebar nav { display: grid; gap: 4px; }
.sidebar nav button { border: 0; background: transparent; color: #c7d0df; padding: 11px 14px; text-align: left; border-radius: 7px; }
.sidebar nav button:hover, .sidebar nav button.active { color: #fff; background: #2a3c5d; }
.main { min-width: 0; }
.topbar { height: 78px; background: #fff; border-bottom: 1px solid var(--line); padding: 14px 28px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.topbar h1 { font-size: 21px; margin: 0 0 3px; }
.topbar p { margin: 0; color: var(--muted); font-size: 12px; }
.userbar { display: flex; align-items: center; gap: 12px; white-space: nowrap; }
.userbar form { margin: 0; }
.content { padding: 24px 28px 42px; }
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 18px; box-shadow: 0 1px 2px rgba(16,24,40,.03); }
.card + .card { margin-top: 16px; }
.card h2, .card h3 { margin: 0 0 14px; }
.card h2 { font-size: 17px; }
.card h3 { font-size: 15px; }
.metric-grid { display: grid; grid-template-columns: repeat(6, minmax(120px, 1fr)); gap: 12px; margin-bottom: 16px; }
.metric { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 17px; }
.metric span { color: var(--muted); font-size: 12px; }
.metric strong { display: block; font-size: 25px; margin-top: 8px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: #4b5563; background: #f8fafc; font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: #fbfcff; }
.actions { display: flex; gap: 6px; white-space: nowrap; }
.btn { border: 1px solid #cfd6e3; border-radius: 6px; padding: 7px 12px; background: #fff; color: #293548; }
.btn:hover { background: #f7f9fc; }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn.danger { border-color: #f0bebc; color: var(--danger); }
.btn.small { padding: 5px 9px; font-size: 12px; }
.link-button { border: 0; color: var(--blue); background: transparent; padding: 3px; }
.badge { display: inline-block; border-radius: 999px; padding: 3px 8px; font-size: 12px; background: #eef1f5; color: #4b5563; }
.badge.active, .badge.completed, .badge.confirmed, .badge.released, .badge.passed { background: #e7f7f0; color: var(--success); }
.badge.maintenance, .badge.in_progress, .badge.pending { background: #fff4d7; color: #986a00; }
.badge.overdue, .badge.scrapped, .badge.failed, .badge.cancelled { background: #fdeceb; color: var(--danger); }
.low { color: var(--danger); font-weight: 700; }
.muted { color: var(--muted); }
.empty { text-align: center; color: var(--muted); padding: 38px 16px; }
.loading { color: var(--muted); padding: 42px 0; text-align: center; }
.error-box { padding: 16px; background: #fff0ef; color: #9b2c29; border: 1px solid #f3c5c3; border-radius: 8px; }
.tabs { display: flex; gap: 4px; margin-bottom: 14px; border-bottom: 1px solid var(--line); }
.tabs button { border: 0; background: transparent; padding: 9px 13px; color: var(--muted); border-bottom: 2px solid transparent; }
.tabs button.active { color: var(--blue); border-color: var(--blue); }
.modal-backdrop { position: fixed; inset: 0; background: rgba(15,23,42,.56); display: grid; place-items: center; z-index: 20; padding: 20px; }
.modal { width: min(760px, 100%); max-height: calc(100vh - 40px); overflow: auto; background: #fff; border-radius: 12px; box-shadow: 0 24px 80px rgba(0,0,0,.25); }
.modal.wide { width: min(1050px, 100%); }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 17px 20px; border-bottom: 1px solid var(--line); }
.modal-head h2 { margin: 0; font-size: 18px; }
.modal-close { border: 0; background: none; font-size: 24px; color: var(--muted); }
.modal-body { padding: 20px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--line); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
label.field { display: grid; gap: 6px; color: #374151; }
label.field > span::after { content: ""; }
input, select, textarea { border: 1px solid #cfd6e3; border-radius: 6px; padding: 8px 10px; background: #fff; width: 100%; color: #202938; }
textarea { min-height: 72px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid #b9d0ff; border-color: var(--blue); }
.inline-form { display: flex; gap: 8px; align-items: end; flex-wrap: wrap; }
.inline-form .field { min-width: 140px; }
.item-row { display: grid; grid-template-columns: minmax(220px,2fr) 1fr 1fr auto; gap: 8px; margin-bottom: 8px; align-items: end; }
.notice { background: var(--blue-soft); color: #244a98; border-radius: 7px; padding: 10px 12px; margin-bottom: 14px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.section-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.section-title h2 { margin: 0; }
.auth-shell, .login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: linear-gradient(135deg,#eef3ff,#f8fafc); }
.auth-card, .login-card { width: min(410px,100%); background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 28px; box-shadow: 0 20px 60px rgba(30,50,90,.10); }
.auth-card h1, .login-card h1 { margin: 0 0 6px; }
.auth-card form, .login-card { display: grid; gap: 14px; }
.login-divider { display: flex; align-items: center; gap: 10px; color: var(--muted); }
.login-divider::before, .login-divider::after { content: ""; height: 1px; background: var(--line); flex: 1; }
.wechat-login { display: block; border-radius: 6px; padding: 9px 12px; background: #07c160; color: #fff; text-decoration: none; text-align: center; }
.wechat-login:hover { background: #06ad56; }
.validation-summary-errors { color: var(--danger); }

@media (max-width: 1100px) {
  .metric-grid { grid-template-columns: repeat(3,1fr); }
  .split { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; padding: 13px; }
  .brand { padding-bottom: 12px; }
  .sidebar nav { display: flex; overflow-x: auto; }
  .sidebar nav button { white-space: nowrap; }
  .topbar { height: auto; padding: 13px 16px; align-items: flex-start; }
  .userbar { flex-wrap: wrap; justify-content: flex-end; }
  .content { padding: 16px; }
  .metric-grid { grid-template-columns: repeat(2,1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .item-row { grid-template-columns: 1fr 1fr; }
}