/* Ask Northstar — Quiet Rail design tokens (exact reference values, DO NOT reinterpret) */
:root,
[data-theme="light"] {
  --bg: #FBFCFE;
  --rail: #F1F5FB;
  --rail-border: #E4EAF4;
  --panel: #FFFFFF;
  --border: #E4EBF6;
  --line: #EDF1F8;
  --t1: #16243F;
  --t2: #54678A;
  --t3: #93A1B9;
  --t4: #AFBACE;
  --accent: #2457E6;
  --accent-soft: #EEF3FD;
  --accent-soft-2: #E3EBFA;
  --bubble: #E9EFFB;
  --chip: #DCE5F3;
  --soft: #FAFCFF;
  --hair: #E2E9F4;
  --shadow: 0 18px 44px rgba(16,32,64,0.10);
  --composer-shadow: 0 8px 26px rgba(16,32,64,0.06);
  --glow: rgba(36,87,230,0.08);
}
[data-theme="dark"] {
  --bg: #0B1120;
  --rail: #070C17;
  --rail-border: #151D2E;
  --panel: #101A2B;
  --border: #1D2840;
  --line: #151E30;
  --t1: #E4EAF6;
  --t2: #8595B2;
  --t3: #5E6E8A;
  --t4: #4C5C79;
  --accent: #4D8DFF;
  --accent-soft: #12203A;
  --accent-soft-2: #16233C;
  --bubble: #16223A;
  --chip: #2B3A58;
  --soft: #0F1827;
  --hair: #1A2334;
  --shadow: 0 24px 60px rgba(0,0,0,0.55);
  --composer-shadow: 0 12px 34px rgba(0,0,0,0.32);
  --glow: rgba(77,141,255,0.10);
}
/* Geometry constants (reference contract) */
:root {
  color-scheme: light dark;
  --rail-collapsed: 64px;
  --rail-expanded: 272px;
  --chat-col-min: 700px;
  --chat-col-max: 820px;
  --artboard-w: 1440px;
  --artboard-h: 900px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font: "Manrope", "SF Pro Display", -apple-system, system-ui, sans-serif;
}