/**
 * NanoTekno Molecular OS - Design Tokens
 * Centralized theme system with light (landing) and dark (app) modes
 */

:root {
  /* Spacing Scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Typography Scale */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-toast: 600;
  --z-tooltip: 700;

  /* Layout */
  --container-max-width: 1280px;
  --sidebar-width: 260px;
  --topbar-height: 64px;
}

/* LIGHT THEME - Landing Pages */
[data-theme="light"] {
  /* Brand Colors */
  --color-primary: #0B1F3A;
  --color-primary-hover: #152d4f;
  --color-primary-light: #1a3a64;
  
  --color-secondary: #0FA3B1;
  --color-secondary-hover: #0d8a96;
  --color-secondary-light: #e0f5f7;
  
  --color-accent: #2D6A4F;
  --color-accent-hover: #245640;
  --color-accent-light: #e7f4ef;

  /* Neutrals */
  --color-bg-base: #FFFFFF;
  --color-bg-secondary: #F9FAFB;
  --color-bg-tertiary: #F3F4F6;
  --color-bg-hover: #E5E7EB;
  
  --color-text-primary: #111827;
  --color-text-secondary: #6B7280;
  --color-text-tertiary: #9CA3AF;
  --color-text-inverse: #FFFFFF;
  
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;
  --color-border-focus: #0FA3B1;

  /* Semantic States */
  --color-success: #059669;
  --color-success-bg: #D1FAE5;
  --color-success-border: #6EE7B7;
  
  --color-warning: #D97706;
  --color-warning-bg: #FEF3C7;
  --color-warning-border: #FCD34D;
  
  --color-error: #DC2626;
  --color-error-bg: #FEE2E2;
  --color-error-border: #FCA5A5;
  
  --color-info: #2563EB;
  --color-info-bg: #DBEAFE;
  --color-info-border: #93C5FD;
}

/* DARK THEME - App Pages */
[data-theme="dark"] {
  /* Brand Colors */
  --color-primary: #0FA3B1;
  --color-primary-hover: #12b8c7;
  --color-primary-light: #1a3a64;
  
  --color-secondary: #0B1F3A;
  --color-secondary-hover: #152d4f;
  --color-secondary-light: #1e4068;
  
  --color-accent: #40916C;
  --color-accent-hover: #52a47d;
  --color-accent-light: #2d6a4f;

  /* Neutrals */
  --color-bg-base: #0F172A;
  --color-bg-secondary: #1E293B;
  --color-bg-tertiary: #334155;
  --color-bg-hover: #475569;
  
  --color-text-primary: #F1F5F9;
  --color-text-secondary: #CBD5E1;
  --color-text-tertiary: #94A3B8;
  --color-text-inverse: #0F172A;
  
  --color-border: #334155;
  --color-border-light: #1E293B;
  --color-border-focus: #0FA3B1;

  /* Semantic States */
  --color-success: #10B981;
  --color-success-bg: rgba(16, 185, 129, 0.1);
  --color-success-border: rgba(16, 185, 129, 0.3);
  
  --color-warning: #F59E0B;
  --color-warning-bg: rgba(245, 158, 11, 0.1);
  --color-warning-border: rgba(245, 158, 11, 0.3);
  
  --color-error: #EF4444;
  --color-error-bg: rgba(239, 68, 68, 0.1);
  --color-error-border: rgba(239, 68, 68, 0.3);
  
  --color-info: #3B82F6;
  --color-info-bg: rgba(59, 130, 246, 0.1);
  --color-info-border: rgba(59, 130, 246, 0.3);

  /* Dark Mode Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}