:root {
  /* Brand */
  --bc-primary: #3B5BFF;
  --bc-primary-rgb: 59, 91, 255;
  --bc-secondary: #6C63FF;
  --bc-secondary-rgb: 108, 99, 255;
  --bc-accent: #00C2FF;
  --bc-accent-rgb: 0, 194, 255;

  /* Surfaces */
  --bc-bg: #F7F9FC;
  --bc-bg-elevated: #FFFFFF;
  --bc-bg-soft: #EEF2FF;
  --bc-bg-dark: #101828;
  --bc-bg-dark-soft: #1A2332;
  --bc-bg-glass: rgba(255, 255, 255, 0.72);
  --bc-bg-glass-dark: rgba(16, 24, 40, 0.75);

  /* Text */
  --bc-text: #101828;
  --bc-text-secondary: #475467;
  --bc-text-muted: #98A2B3;
  --bc-text-inverse: #FFFFFF;
  --bc-heading: #0B1220;

  /* Borders & Shadows */
  --bc-border: rgba(16, 24, 40, 0.08);
  --bc-border-strong: rgba(16, 24, 40, 0.14);
  --bc-shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.04);
  --bc-shadow-sm: 0 4px 16px rgba(16, 24, 40, 0.06);
  --bc-shadow-md: 0 12px 40px rgba(59, 91, 255, 0.12);
  --bc-shadow-lg: 0 24px 64px rgba(16, 24, 40, 0.14);
  --bc-shadow-xl: 0 40px 80px rgba(59, 91, 255, 0.18);
  --bc-shadow-glow: 0 0 40px rgba(59, 91, 255, 0.35);

  /* Gradients */
  --bc-gradient-primary: linear-gradient(135deg, #3B5BFF 0%, #6C63FF 50%, #00C2FF 100%);
  --bc-gradient-hero: linear-gradient(135deg, #EEF2FF 0%, #F7F9FC 40%, #E0F7FF 100%);
  --bc-gradient-card: linear-gradient(145deg, rgba(59, 91, 255, 0.08), rgba(108, 99, 255, 0.04));
  --bc-gradient-dark: linear-gradient(145deg, #101828 0%, #1A2332 60%, #18223A 100%);
  --bc-gradient-wallet: linear-gradient(135deg, #3B5BFF 0%, #6C63FF 100%);
  --bc-gradient-success: linear-gradient(135deg, #12B76A 0%, #32D583 100%);
  --bc-gradient-warn: linear-gradient(135deg, #F79009 0%, #FDB022 100%);

  /* Status */
  --bc-success: #12B76A;
  --bc-warning: #F79009;
  --bc-danger: #F04438;
  --bc-info: #00C2FF;

  /* Layout */
  --bc-container: 1200px;
  --bc-container-wide: 1400px;
  --bc-header-h: 80px;
  --bc-radius-xs: 8px;
  --bc-radius-sm: 12px;
  --bc-radius-md: 16px;
  --bc-radius-lg: 24px;
  --bc-radius-xl: 32px;
  --bc-radius-full: 9999px;
  --bc-space-section: clamp(4rem, 8vw, 7.5rem);

  /* Typography */
  --bc-font-sans: "Plus Jakarta Sans", "Segoe UI", system-ui, sans-serif;
  --bc-font-display: "Clash Display", "Plus Jakarta Sans", sans-serif;
  --bc-font-mono: "JetBrains Mono", "Fira Code", monospace;
  --bc-fs-xs: 0.75rem;
  --bc-fs-sm: 0.875rem;
  --bc-fs-base: 1rem;
  --bc-fs-lg: 1.125rem;
  --bc-fs-xl: 1.25rem;
  --bc-fs-2xl: 1.5rem;
  --bc-fs-3xl: clamp(1.75rem, 3vw, 2.25rem);
  --bc-fs-4xl: clamp(2.25rem, 5vw, 3.5rem);
  --bc-fs-5xl: clamp(2.75rem, 6vw, 4.5rem);
  --bc-lh-tight: 1.15;
  --bc-lh-snug: 1.35;
  --bc-lh-normal: 1.6;
  --bc-fw-medium: 500;
  --bc-fw-semibold: 600;
  --bc-fw-bold: 700;
  --bc-fw-extrabold: 800;

  /* Motion */
  --bc-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --bc-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --bc-duration-fast: 180ms;
  --bc-duration: 350ms;
  --bc-duration-slow: 700ms;

  /* Z-index */
  --bc-z-dropdown: 100;
  --bc-z-sticky: 200;
  --bc-z-mega: 300;
  --bc-z-overlay: 400;
  --bc-z-modal: 500;
  --bc-z-loader: 9999;
}

[data-theme="dark"] {
  --bc-bg: #0B1220;
  --bc-bg-elevated: #141C2B;
  --bc-bg-soft: #1A2332;
  --bc-text: #F2F4F7;
  --bc-text-secondary: #98A2B3;
  --bc-text-muted: #667085;
  --bc-heading: #FFFFFF;
  --bc-border: rgba(255, 255, 255, 0.08);
  --bc-border-strong: rgba(255, 255, 255, 0.14);
  --bc-bg-glass: rgba(20, 28, 43, 0.82);
  --bc-shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.35);
  --bc-shadow-md: 0 12px 40px rgba(0, 0, 0, 0.45);
  --bc-gradient-hero: linear-gradient(135deg, #0B1220 0%, #141C2B 50%, #102033 100%);
}