/**
 * Font Definitions and Loading Optimization
 * 
 * External font CSS file to reduce HTML size and improve caching.
 * Contains font-face declarations and font loading utilities.
 */

/* Font face declarations with optimized loading */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap; /* Critical for performance */
  src: local('Inter Regular'), local('Inter-Regular');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: local('Inter Medium'), local('Inter-Medium');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: local('Inter SemiBold'), local('Inter-SemiBold');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: local('Inter Bold'), local('Inter-Bold');
}

/* Optimized font stack with system fallbacks */
:root {
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

/* Apply optimized font stack */
html {
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1;
}

/* Prevent layout shift during font loading */
.font-loading {
  font-family: system-ui, -apple-system, sans-serif;
}

/* Font weight utilities */
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* Monospace font for code */
code, pre, kbd, samp {
  font-family: var(--font-mono);
}