/**
 * [Variables] | [Constants] | [Dependencies] | [Integration Points]
 * - Variables: CSS Custom Properties (--bg-primary, --text-primary, etc.)
 * - Constants: Color tokens, spacing tokens, typography scales
 * - Dependencies: None
 * - Integration Points: Root tokens for all components and theme switching
 */

:root {
  /* Dark Theme Palette (Default) */
  --bg-base: #06090F;
  --bg-primary: #0A0E17;
  --bg-surface: #101624;
  --bg-surface-elevated: #162034;
  --bg-surface-glass: rgba(16, 22, 36, 0.85);
  
  --border-subtle: #1C273C;
  --border-focus: #384C70;
  --border-accent: rgba(139, 92, 246, 0.4);

  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-tertiary: #64748B;
  --text-inverse: #0A0E17;

  /* Brand Accents */
  --accent-violet: #8B5CF6;
  --accent-violet-glow: rgba(139, 92, 246, 0.25);
  --accent-cyan: #06B6D4;
  --accent-cyan-glow: rgba(6, 182, 212, 0.25);
  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;
  --accent-rose: #F43F5E;

  /* Luxury Gold Accents */
  --accent-gold: #F59E0B;
  --accent-gold-metallic: #E5A93C;
  --accent-gold-champagne: #FDE68A;
  --border-gold: rgba(245, 158, 11, 0.35);
  --border-gold-glow: rgba(245, 158, 11, 0.22);
  --grad-gold: linear-gradient(135deg, #FDE68A 0%, #D97706 50%, #92400E 100%);
  --grad-gold-border: linear-gradient(135deg, rgba(245, 158, 11, 0.6) 0%, rgba(217, 119, 6, 0.25) 50%, rgba(139, 92, 246, 0.3) 100%);
  --shadow-gold-glow: 0 0 24px rgba(245, 158, 11, 0.18);

  /* Gradients */
  --grad-hero: linear-gradient(135deg, #FFFFFF 0%, #F1F5F9 40%, #A78BFA 70%, #F59E0B 100%);
  --grad-accent: linear-gradient(135deg, #8B5CF6 0%, #06B6D4 50%, #F59E0B 100%);
  --grad-surface: linear-gradient(180deg, rgba(22, 32, 52, 0.7) 0%, rgba(16, 22, 36, 0.7) 100%);
  --grad-border: linear-gradient(135deg, rgba(245, 158, 11, 0.4), rgba(139, 92, 246, 0.3), rgba(6, 182, 212, 0.2));

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 24px rgba(139, 92, 246, 0.2);

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --max-width: 1240px;
  --header-height: 72px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-base: #F8FAFC;
  --bg-primary: #FFFFFF;
  --bg-surface: #F1F5F9;
  --bg-surface-elevated: #E2E8F0;
  --bg-surface-glass: rgba(255, 255, 255, 0.9);

  --border-subtle: #E2E8F0;
  --border-focus: #CBD5E1;
  --border-accent: rgba(139, 92, 246, 0.4);

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-tertiary: #94A3B8;
  --text-inverse: #FFFFFF;

  --accent-violet-glow: rgba(139, 92, 246, 0.15);
  --accent-cyan-glow: rgba(6, 182, 212, 0.15);

  --border-gold: rgba(217, 119, 6, 0.35);
  --border-gold-glow: rgba(217, 119, 6, 0.15);
  --shadow-gold-glow: 0 0 20px rgba(217, 119, 6, 0.12);

  --grad-hero: linear-gradient(135deg, #0F172A 0%, #1E293B 40%, #7C3AED 75%, #D97706 100%);
  --grad-surface: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  --grad-border: linear-gradient(135deg, rgba(217, 119, 6, 0.4), rgba(124, 58, 237, 0.25), rgba(6, 182, 212, 0.15));

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.15);
}