:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-primary: #333333;
    --accent-primary: #ff6b35;
    --accent-secondary: #00d4ff;
    --accent-warning: #fbbf24;
    --accent-success: #10b981;
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.2);
    --radius-xl: 20px;
    --radius-lg: 15px;
    --radius-2xl: 24px;
    --radius-full: 50px;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-black: 900;
    --z-sticky: 50;
    --transition-base: 0.3s ease;
}

html, body {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.flex {
    display: flex;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

a {
    transition: all var(--transition-base);
}