:root {
    /* Minimal Grey Theme (NO #FFFFFF or #000000) */
    --color-primary-accent: #3a3a3c; /* Dark Charcoal Grey */
    --color-secondary-accent: #8e8e93; /* Medium Grey */
    --color-success: #15803d; /* Forest Green (no pure white/black) */
    --color-destructive: #b91c1c; /* Crimson Red */
    --color-highlight: #a16207; /* Ochre Brown */
    
    --color-bg-base: #f2f2f7; /* Very light grey background */
    --color-bg-surface: #fafafc; /* Near-white surface container */
    
    --color-text-primary: #1c1c1e; /* Dark slate grey text */
    --color-text-muted: #57575e; /* Medium-dark grey text */
    
    --color-border: #e5e5ea; /* Subtle light grey border */
    --color-border-hover: #c7c7cc; /* Medium-light grey border */
    
    --color-overlay-bg: rgba(28, 28, 30, 0.35);
    --color-neutral-shaded: #ebebeb; /* Light grey block fills */
    
    /* Layout Tokens */
    --border-radius-sm: 2px; /* Sharp modern geometric cuts */
    --grid-gap-base: 16px;
    --interactive-height: 44px;
    
    /* Fonts */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, Consolas, monospace;
}