:root {
  --tt-font-family: "TTIranSans", Tahoma, Arial, sans-serif;
  --tt-transition: 180ms ease;
  --tt-primary: #0d6fd8;
  --tt-primary-soft: #eef6ff;
  --tt-info: #0d6fd8;
  --tt-success: #168a55;
  --tt-warning: #9a6b14;
  --tt-danger: #e24b52;
  --tt-bg: #fbfcfe;
  --tt-surface: #ffffff;
  --tt-surface-soft: #f6f7f9;
  --tt-border: #e9edf2;
  --tt-border-strong: #dce2e9;
  --tt-text: #30343b;
  --tt-text-muted: #7f8997;
  --tt-text-soft: #a9b1bc;
  --tt-sidebar-width: 256px;
  --tt-sidebar-collapsed-width: 72px;
  --tt-topbar-height: 88px;
  --tt-radius-sm: 8px;
  --tt-radius-md: 12px;
  --tt-radius-lg: 18px;
  --tt-shadow-sm: 0 2px 8px rgba(27, 43, 65, 0.04);
  --tt-shadow-md: 0 12px 34px rgba(27, 43, 65, 0.09);
}