:root {
  --bg-light: #fdfdfd;      /* Top light */
  --bg-mid: #f2f2f2;        /* Middle gray */
  --bg-dark: #e8e8e8;       /* Bottom depth */
  --card-main: #1a1a1a;     /* All cards color */
  --accent-glass: rgba(255, 255, 255, 0.12);
}