[data-theme="dark"] {
    --color-bg: #121212;
    --color-surface: #1E1E1E;
    --color-surface-alt: #2C2C2C;
    --color-text: #E0E0E0;
    --color-text-secondary: #9E9E9E;
    --color-text-hint: #616161;
    --color-border: #333333;
    --color-divider: #2A2A2A;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.4);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.5);
}