/* ============================================
   CSS Variables - Design System
   Based on DESIGN.md specifications
   ============================================ */

:root {
  /* Brand Colors */
  --color-primary: #121A4A;
  --color-primary-hover: #1E4199;
  --color-primary-active: #1E4199;
  --color-secondary: #7E6916;
  --color-accent: #1565C0;
  --color-tertiary: #7E6916;

  /* Neutral Colors */
  --color-background: #F6F6F8;
  --color-surface: #EEEFF2;
  --color-card: #FFFFFF;
  --color-border: #E3E4E8;
  --color-text-primary: #212121;
  --color-text-secondary: #334155;
  --color-text-tertiary: #757575;

  /* Semantic Colors */
  --color-success: #167E6C;
  --color-warning: #C08115;
  --color-error: #A41742;
  --color-info: #3b82f6;

  /* Decorative */
  --color-dot: #A0B4D6;

  /* Spacing Scale (8px grid) */
  --space-1: 1px;
  --space-2: 2px;
  --space-3: 4px;
  --space-4: 8px;
  --space-5: 12px;
  --space-6: 16px;
  --space-7: 24px;
  --space-8: 32px;
  --space-9: 48px;
  --space-10: 64px;
  --space-11: 96px;
  --space-12: 128px;

  /* Layout */
  --nav-height: 72px;
  --nav-height-mobile: 64px;
  --content-max-width: 1280px;
  --page-margin: 48px;
  --page-margin-mobile: 24px;

  /* Border Radius */
  --radius-none: 0px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-none: none;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 25px 50px rgba(0, 0, 0, 0.12);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 200ms;
  --duration-slow: 350ms;
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Typography */
  --font-primary: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;

  /* Z-Index Scale */
  --z-base: 0;
  --z-decoration: 1;
  --z-content: 10;
  --z-card: 20;
  --z-nav: 100;
  --z-dropdown: 200;
  --z-modal: 300;
  --z-toast: 400;
}

/* Dark mode support (future) */
@media (prefers-color-scheme: dark) {
  :root {
    /* Can be overridden for dark mode */
  }
}