/* Font Loading Optimization */
@font-face {
  font-family: 'Noto Sans KR Fallback';
  src: local('Noto Sans KR'), local('NotoSansKR');
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Noto Sans KR Fallback';
  src: local('Noto Sans KR Bold'), local('NotoSansKR-Bold');
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: 'Noto Sans KR Fallback';
  src: local('Noto Sans KR Black'), local('NotoSansKR-Black');
  font-weight: 900;
  font-display: swap;
}

/* 폰트 로딩 최적화 */
.font-loaded body {
  font-family: 'Noto Sans KR', 'Noto Sans KR Fallback', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 폰트 로딩 전 기본 폰트 */
body {
  font-family: 'Noto Sans KR Fallback', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 텍스트 렌더링 최적화 */
body {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1, "liga" 1;
}

/* 한글 최적화 */
:lang(ko) {
  word-break: keep-all;
  line-break: strict;
}

/* 성능 최적화 */
* {
  will-change: auto;
}

/* 애니메이션 요소만 GPU 가속 */
.transition,
.transition-all,
.transition-opacity,
.transition-transform {
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* 이미지 렌더링 최적화 */
img {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* WebP/AVIF 지원 감지 */
.webp img[src$=".jpg"],
.webp img[src$=".png"] {
  opacity: 0.01;
}

.no-webp img[src$=".webp"] {
  display: none;
}