:root {
  /* Primary - Cyan/Teal (기술/혁신) */
  --primary-50: #ecfeff;
  --primary-100: #cffafe;
  --primary-200: #a5f3fc;
  --primary-300: #67e8f9;
  --primary-400: #22d3ee;
  --primary-500: #06b6d4;
  --primary-600: #0891b2;
  --primary-700: #0e7490;
  --primary-800: #155e75;
  --primary-900: #164e63;
  
  /* Accent - Electric Blue (신뢰/전문성) */
  --accent-400: #60a5fa;
  --accent-500: #3b82f6;
  --accent-600: #2563eb;
  --accent-700: #1d4ed8;
  
  /* Background - Deep Dark */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a24;
  --bg-card: rgba(255, 255, 255, 0.03);
  
  /* Glass Effect */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: blur(20px);
  
  /* Text */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --gradient-glow: radial-gradient(ellipse at center, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
  --gradient-mesh: 
    radial-gradient(at 40% 20%, rgba(6, 182, 212, 0.1) 0px, transparent 50%),
    radial-gradient(at 80% 0%, rgba(59, 130, 246, 0.1) 0px, transparent 50%),
    radial-gradient(at 0% 50%, rgba(6, 182, 212, 0.05) 0px, transparent 50%);
  
  /* Typography */
  --font-display: 'Outfit', 'Pretendard', sans-serif;
  --font-body: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Font Sizes */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.4rem + 2.4vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.6rem + 3.25vw, 3.5rem);
  --text-5xl: clamp(3rem, 2rem + 5vw, 5rem);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px rgba(6, 182, 212, 0.3);
  
  /* Z-index */
  --z-negative: -1;
  --z-base: 0;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-modal: 100;
  --z-tooltip: 200;
}