:root {
    /* Brand */
    --brand: #10b981;
    --brand-light: #34d399;
    --brand-dark: #059669;
    --brand-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);

    /* Background */
    --bg-body: linear-gradient(135deg, #000 0%, #1a1a2e 50%, #16213e 100%);
    --bg-surface: rgba(255,255,255,0.05);
    --bg-surface-hover: rgba(255,255,255,0.08);
    --bg-input: rgba(255,255,255,0.08);
    --bg-input-focus: rgba(255,255,255,0.1);
    --bg-overlay: rgba(0,0,0,0.6);

    /* Text */
    --text-primary: #fff;
    --text-secondary: rgba(255,255,255,0.7);
    --text-muted: rgba(255,255,255,0.5);
    --text-hint: rgba(255,255,255,0.35);

    /* Border */
    --border-default: rgba(255,255,255,0.1);
    --border-hover: rgba(255,255,255,0.2);
    --border-focus: #10b981;

    /* Feedback */
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --success-bg: rgba(16, 185, 129, 0.15);
    --error-bg: rgba(239, 68, 68, 0.15);
    --warning-bg: rgba(245, 158, 11, 0.15);
    --info-bg: rgba(59, 130, 246, 0.15);

    /* Stat card accents */
    --accent-green: #10b981;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-amber: #f59e0b;
    --accent-red: #ef4444;

    /* Typography */
    --font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.85rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.1rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3rem;

    /* Spacing (4px grid) */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-3xl: 24px;
    --radius-full: 50px;

    /* Shadows */
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.2);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.2);
    --shadow-brand: 0 10px 30px rgba(16, 185, 129, 0.3);
    --shadow-brand-hover: 0 15px 40px rgba(16, 185, 129, 0.4);

    /* Motion */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-index */
    --z-dropdown: 100;
    --z-modal-backdrop: 999;
    --z-modal: 1000;
    --z-toast: 9999;
    --z-nav: 10000;

    /* Backdrop */
    --blur-surface: blur(20px);
    --blur-nav: blur(10px);

    /* Noise pattern overlay */
    --noise-bg: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}