[data-theme="light"], :root {
  --bg-primary: #ffffff; --bg-secondary: #f8f9fa; --bg-tertiary: #f1f3f4;
  --bg-hover: rgba(0,0,0,0.04); --bg-active: rgba(0,0,0,0.08);
  --text-primary: #202124; --text-secondary: #5f6368; --text-muted: #80868b;
  --border-color: #dadce0; --border-light: #e8eaed;
  --sidebar-bg: #f8f9fa; --sidebar-border: #e8eaed; --sidebar-text: #3c4043;
  --sidebar-hover: rgba(0,0,0,0.06); --sidebar-active: #e8f0fe; --sidebar-active-text: #1967d2;
  --header-bg: #ffffff; --header-border: #e8eaed;
  --card-bg: #ffffff; --card-border: #e8eaed;
  --input-bg: #ffffff; --input-border: #dadce0; --input-focus: #1a73e8;
  --modal-overlay: rgba(0,0,0,0.5);
}