:root,
[data-theme="dark"] {
    --bg-primary: #0f1117;
    --bg-secondary: #161822;
    --bg-tertiary: #1e2030;
    --bg-elevated: #252840;
    --bg-hover: #2a2d45;
    --bg-active: #323660;

    --text-primary: #e4e6f0;
    --text-secondary: #9ca0b8;
    --text-muted: #6b6f8a;
    --text-inverse: #0f1117;

    --border-primary: #2a2d45;
    --border-secondary: #1e2030;
    --border-focus: #6366f1;

    --accent-primary: #6366f1;
    --accent-primary-hover: #818cf8;
    --accent-secondary: #8b5cf6;
    --accent-success: #22c55e;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --accent-info: #3b82f6;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);

    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;

    --sidebar-width: 260px;
    --sidebar-collapsed: 64px;
    --header-height: 56px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fc;
    --bg-tertiary: #f1f3f9;
    --bg-elevated: #ffffff;
    --bg-hover: #e8eaf2;
    --bg-active: #dde0ed;

    --text-primary: #1a1d2e;
    --text-secondary: #5a5f7a;
    --text-muted: #9094a8;
    --text-inverse: #ffffff;

    --border-primary: #dde0ed;
    --border-secondary: #e8eaf2;
    --border-focus: #6366f1;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.12);
}