body {
  font-family: Arial, Helvetica, sans-serif;
}

@layer base {
  :root {
    /* Define light theme variables if needed, but default to dark */
    --background: 0 0% 100%;
    --foreground: 0 0% 3.9%;
    --card: 0 0% 100%;
    --card-foreground: 0 0% 3.9%;
    --popover: 0 0% 100%;
    --popover-foreground: 0 0% 3.9%;
    --primary: 0 0% 9%;
    --primary-foreground: 0 0% 98%;
    --secondary: 0 0% 96.1%;
    --secondary-foreground: 0 0% 9%;
    --muted: 0 0% 96.1%;
    --muted-foreground: 0 0% 45.1%;
    --accent: 10 85% 45%; /* Red */
    --accent-h: 10;      /* Hue for accent */
    --accent-s: 85%;     /* Saturation for accent */
    --accent-l: 45%;     /* Lightness for accent */
    --accent-foreground: 0 0% 98%; /* White */
    --destructive: 0 70% 50%; /* Brighter Red */
    --destructive-foreground: 0 0% 98%;
    --border: 0 0% 89.8%;
    --input: 0 0% 89.8%;
    --ring: 10 85% 55%; /* Lighter Red */
    --chart-1: 12 76% 61%;
    --chart-2: 173 58% 39%;
    --chart-3: 197 37% 24%;
    --chart-4: 43 74% 66%;
    --chart-5: 27 87% 67%;
    --radius: 0.5rem;
    --sidebar-background: 0 0% 98%;
    --sidebar-foreground: 240 5.3% 26.1%;
    --sidebar-primary: 240 5.9% 10%;
    --sidebar-primary-foreground: 0 0% 98%;
    --sidebar-accent: 240 4.8% 95.9%;
    --sidebar-accent-foreground: 240 5.9% 10%;
    --sidebar-border: 220 13% 91%;
    --sidebar-ring: 217.2 91.2% 59.8%;
  }

  .dark {
    --background: 0 0% 3.9%; /* Nearly Black */
    --foreground: 0 0% 98%; /* Nearly White */
    --card: 0 0% 7%; /* Slightly Lighter Black */
    --card-foreground: 0 0% 98%;
    --popover: 0 0% 7%;
    --popover-foreground: 0 0% 98%;
    --primary: 0 0% 98%; /* White */
    --primary-foreground: 0 0% 9%; /* Black */
    --secondary: 0 0% 14.9%; /* Dark Gray */
    --secondary-foreground: 0 0% 98%; /* White */
    --muted: 0 0% 14.9%;
    --muted-foreground: 0 0% 63.9%; /* Gray */
    --accent: 10 85% 45%; /* Red */
    --accent-h: 10;      /* Hue for accent */
    --accent-s: 85%;     /* Saturation for accent */
    --accent-l: 45%;     /* Lightness for accent */
    --accent-foreground: 0 0% 98%; /* White */
    --destructive: 0 70% 50%; /* Brighter Red */
    --destructive-foreground: 0 0% 98%;
    --border: 0 0% 14.9%; /* Dark Gray */
    --input: 0 0% 14.9%; /* Dark Gray */
    --ring: 10 85% 55%; /* Lighter Red */
    --chart-1: 220 70% 50%;
    --chart-2: 160 60% 45%;
    --chart-3: 30 80% 55%;
    --chart-4: 280 65% 60%;
    --chart-5: 340 75% 55%;
    --sidebar-background: 0 0% 7%; /* Match Card Background */
    --sidebar-foreground: 0 0% 98%; /* Match Card Foreground */
    --sidebar-primary: 10 85% 45%; /* Red */
    --sidebar-primary-foreground: 0 0% 98%; /* White */
    --sidebar-accent: 0 0% 14.9%; /* Dark Gray */
    --sidebar-accent-foreground: 0 0% 98%; /* White */
    --sidebar-border: 0 0% 14.9%; /* Dark Gray */
    --sidebar-ring: 10 85% 55%; /* Lighter Red */
  }
}