/* UchatBot Design System - Variables & Reset */
:root {
  --uc-bg: #0d1117;
  --uc-surface: #161b22;
  --uc-elevated: #21262d;
  --uc-border: #30363d;
  --uc-text: #e0e2ec;
  --uc-text-muted: #8b949e;
  --uc-text-dim: #6e7681;
  --uc-primary: #388bfd;
  --uc-primary-hover: #58a6ff;
  --uc-primary-bg: rgba(56,139,253,0.1);
  --uc-success: #3fb950;
  --uc-success-bg: rgba(63,185,80,0.1);
  --uc-warning: #d29922;
  --uc-warning-bg: rgba(210,153,34,0.1);
  --uc-danger: #f85149;
  --uc-danger-bg: rgba(248,81,73,0.1);
  --uc-info: #a2c9ff;
  --uc-info-bg: rgba(162,201,255,0.1);
  --uc-purple: #a855f7;
  --uc-purple-bg: rgba(168,85,247,0.1);
  --uc-orange: #f97316;
  --uc-orange-bg: rgba(249,115,22,0.1);
  --uc-sidebar-w: 240px;
  --uc-topbar-h: 60px;
  --uc-radius: 8px;
  --uc-radius-lg: 12px;
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--uc-bg);
  color: var(--uc-text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--uc-primary); text-decoration: none; }
a:hover { color: var(--uc-primary-hover); }