:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #151b2e;
    --bg-tertiary: #1f2937;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --accent-primary: #6366f1;
    --accent-hover: #4f46e5;
    --accent-danger: #ef4444;
    --accent-danger-hover: #dc2626;
    --accent-success: #10b981;
    --accent-success-hover: #059669;
    --accent-info: #3b82f6;
    --accent-info-hover: #2563eb;
    --accent-warning: #f59e0b;
    --border-color: #2d3748;
    --shadow: rgba(0, 0, 0, 0.4);
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 10px;
    --radius-xl: 12px;
    --radius-2xl: 16px;
    --radius-3xl: 20px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: background var(--transition-normal), color var(--transition-normal);
    min-height: 100vh;
    line-height: 1.5;
}