:root {
    /* Colors */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --secondary: #1e40af;
    --dark: #0f172a;
    --dark-700: #1e293b;
    --dark-600: #334155;
    --text: #334155;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --bg: #f8fafc;
    --bg-white: #ffffff;
    --bg-alt: #f1f5f9;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --success: #22c55e;
    --success-bg: #dcfce7;
    --error: #ef4444;
    --error-bg: #fef2f2;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --info: #2563eb;
    --info-bg: #dbeafe;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --container: 1200px;
    --container-narrow: 800px;
    --section-padding: 5rem;
    --card-padding: 2rem;
    --gap: 1.5rem;

    /* Border radius */
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition: 0.2s ease;
    --transition-slow: 0.3s ease;
}