:root {
  /* Neutrals */
  --white: #ffffff;
  --surface: #ffffff;
  --surface-2: #f9fafb;
  --surface-3: #f3f4f6;

  --brand: #4f46e5;
  --brand-600: #4338ca;
  --brand-50: #eef2ff;
  --brand-100: #e0e7ff;

  --bg: #ffffff;
  --bg-elev: #ffffff;
  --bg-muted: #f3f4f6;
  --bg-card: #ffffff;
  --bg-soft: #f9fafb;

  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --border-subtle: #eef0f3;

  /* Ink scale */
  --ink-900: #0a0a0a;
  --ink-800: #171717;
  --ink-700: #262626;
  --ink-600: #404040;
  --ink-500: #525252;
  --ink-400: #737373;
  --ink-300: #a3a3a3;
  --ink-200: #d4d4d4;

  --text: #0a0a0a;
  --text-muted: #525252;
  --text-subtle: #737373;
  --text-inverse: #ffffff;

  --accent: var(--brand);
  --accent-hover: var(--brand-600);
  --accent-contrast: #ffffff;
  --accent-soft: #eef2ff;
  --accent-ring: rgba(79, 70, 229, 0.18);

  --danger: #dc2626;
  --warning: #f59e0b;
  --info: #2563eb;
  --success: #059669;

  --chart-1: #4f46e5;
  --chart-2: #f59e0b;
  --chart-3: #059669;
  --chart-4: #a855f7;
  --chart-5: #ec4899;
  --chart-grid: #eef0f3;
  --chart-axis: #737373;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 0 0 1px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.04), 0 8px 16px rgba(0, 0, 0, 0.04), 0 0 0 1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.02), 0 20px 40px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0,0,0,0.02);
  --shadow-brand: 0 10px 30px -10px rgba(79, 70, 229, 0.35), 0 4px 10px -4px rgba(79, 70, 229, 0.25);
  --shadow-brand-sm: 0 4px 14px -4px rgba(79, 70, 229, 0.3);
  --shadow-focus: 0 0 0 4px var(--accent-ring);

  /* Premium Gradients */
  --brand-grad: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  --accent-grad: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
  --bg-mesh: radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.05) 0, transparent 50%),
             radial-gradient(at 50% 0%, rgba(245, 158, 11, 0.05) 0, transparent 50%),
             radial-gradient(at 100% 0%, rgba(79, 70, 229, 0.05) 0, transparent 50%);
  
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.2);
  --radius-inner: calc(var(--radius-lg) - 4px);

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --fs-xs: 12px;
  --fs-sm: 14px;
  --fs-base: 15px;
  --fs-md: 17px;
  --fs-lg: 20px;
  --fs-xl: 24px;
  --fs-2xl: 32px;
  --fs-3xl: 42px;
  --fs-4xl: 56px;

  --lh-tight: 1.15;
  --lh-snug: 1.35;
  --lh-normal: 1.55;
  --lh-loose: 1.7;

  --container: 1280px;
  --container-narrow: 760px;

  --transition-fast: 120ms ease;
  --transition: 200ms ease;
  --transition-slow: 320ms ease;

  --focus-ring: 0 0 0 3px var(--accent-ring);
}

[data-theme="dark"] {
  --white: #0a0a0a;
  --surface: #0f0f10;
  --surface-2: #151517;
  --surface-3: #1c1c1f;

  --brand: #818cf8;
  --brand-600: #a5b4fc;
  --brand-50: rgba(129, 140, 248, 0.12);
  --brand-100: rgba(129, 140, 248, 0.18);

  --bg: #0f0f10;
  --bg-elev: #151517;
  --bg-muted: #1c1c1f;
  --bg-card: #151517;
  --bg-soft: #0f0f10;

  --border: #27272a;
  --border-strong: #3f3f46;
  --border-subtle: #1f1f22;

  --ink-900: #fafafa;
  --ink-800: #e5e5e5;
  --ink-700: #d4d4d4;
  --ink-600: #a3a3a3;
  --ink-500: #8b8b8b;
  --ink-400: #6b6b6b;
  --ink-300: #525252;
  --ink-200: #2e2e31;

  --text: #fafafa;
  --text-muted: #8b8b8b;
  --text-subtle: #6b6b6b;
  --text-inverse: #0a0a0a;

  --accent: var(--brand);
  --accent-hover: var(--brand-600);
  --accent-contrast: #0a0a0a;
  --accent-soft: rgba(129, 140, 248, 0.12);
  --accent-ring: rgba(129, 140, 248, 0.3);

  --chart-1: #818cf8;
  --chart-2: #fbbf24;
  --chart-3: #34d399;
  --chart-4: #c084fc;
  --chart-5: #f472b6;
  --chart-grid: #27272a;
  --chart-axis: #6b6b6b;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 0 0 1px var(--border);
  --shadow-md: 0 0 0 1px var(--border), 0 6px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 0 0 1px var(--border), 0 20px 50px rgba(0,0,0,0.6);
  --shadow-brand: 0 10px 30px -10px rgba(129, 140, 248, 0.4), 0 4px 10px -4px rgba(129, 140, 248, 0.3);
  --shadow-brand-sm: 0 4px 14px -4px rgba(129, 140, 248, 0.35);
  --shadow-focus: 0 0 0 4px var(--accent-ring);

  /* Premium Gradients */
  --brand-grad: linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);
  --accent-grad: linear-gradient(135deg, #fbbf24 0%, #f97316 100%);
  --bg-mesh: radial-gradient(at 0% 0%, rgba(129, 140, 248, 0.1) 0, transparent 50%),
             radial-gradient(at 50% 0%, rgba(251, 191, 36, 0.05) 0, transparent 50%),
             radial-gradient(at 100% 0%, rgba(129, 140, 248, 0.1) 0, transparent 50%);
  
  --glass-bg: rgba(21, 21, 23, 0.7);
  --glass-border: rgba(255, 255, 255, 0.05);
  --radius-inner: calc(var(--radius-lg) - 4px);
}