:root {
  /* Brand Color Palette - Modern, Tech, Editorial */
  --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Color System - Dark Mode (Default) */
  --bg-main: #090d14;
  --bg-surface: #0e1522;
  --bg-surface-elevated: #151f32;
  --bg-surface-hover: #1c2a42;
  --bg-glass: rgba(14, 21, 34, 0.75);
  --bg-glass-card: rgba(21, 31, 50, 0.6);
  --bg-subtle: rgba(255, 255, 255, 0.03);

  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-focus: rgba(0, 229, 153, 0.6);

  /* Typography Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-inverse: #090d14;

  /* Accent & Technical Highlights */
  --accent-primary: #00e599;
  --accent-primary-hover: #00c784;
  --accent-primary-glow: rgba(0, 229, 153, 0.25);
  --accent-secondary: #38bdf8;
  --accent-secondary-glow: rgba(56, 189, 248, 0.2);
  --accent-amber: #f59e0b;
  --accent-purple: #a855f7;

  /* Gradients */
  --gradient-accent: linear-gradient(135deg, #00e599 0%, #38bdf8 100%);
  --gradient-surface: linear-gradient(180deg, rgba(21, 31, 50, 0.8) 0%, rgba(14, 21, 34, 0.95) 100%);
  --gradient-hero-glow: radial-gradient(circle at 50% 30%, rgba(0, 229, 153, 0.08) 0%, rgba(56, 189, 248, 0.04) 40%, transparent 70%);

  /* Spacing System */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;
  --space-4xl: 7.5rem;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(0, 229, 153, 0.2);

  /* Layout */
  --container-max-width: 1280px;
  --header-height: 80px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-hover: #e2e8f0;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-card: rgba(255, 255, 255, 0.8);
  --bg-subtle: rgba(0, 0, 0, 0.02);

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-medium: rgba(0, 0, 0, 0.14);
  --border-focus: rgba(0, 168, 112, 0.7);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --text-inverse: #ffffff;

  --accent-primary: #00a870;
  --accent-primary-hover: #008f5f;
  --accent-primary-glow: rgba(0, 168, 112, 0.18);
  --accent-secondary: #0284c7;
  --accent-secondary-glow: rgba(2, 132, 199, 0.15);

  --gradient-accent: linear-gradient(135deg, #00a870 0%, #0284c7 100%);
  --gradient-surface: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  --gradient-hero-glow: radial-gradient(circle at 50% 30%, rgba(0, 168, 112, 0.08) 0%, rgba(2, 132, 199, 0.05) 40%, transparent 70%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 30px rgba(0, 168, 112, 0.15);
}