/* =====================================================================
 * IGGY SONG — Visual Creator
 * 현대 에디토리얼 타이포 — 명확한 위계(헤드라인/본문/라벨)와 여백 중심
 * Space Grotesk(그로테스크) + Instrument Serif(이탤릭 악센트) + 모노 라벨
 * ===================================================================== */

:root {
  --bg: #0a0a0a;
  --fg: #f4f4f2;
  --fg-dim: #b8b8b5;      /* 호버 등 중간 밝기 */
  --muted: #7e7e7b;       /* 라벨/메타 */
  --line: rgba(255, 255, 255, 0.12);
  --sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    'Noto Sans KR', sans-serif;
  --serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --mono: ui-monospace, 'SF Mono', 'Cascadia Mono', Menlo, Consolas, monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Safari iOS 의 자동 글자 확대 방지 (Chrome 과 동일하게 유지) */
html {
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

::selection {
  background: var(--fg);
  color: var(--bg);
}

/* ---------- 레이아웃 ---------- */

.site {
  min-height: 100vh;   /* Safari 15.4 미만 폴백 */
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: 0 clamp(1.2rem, 4vw, 3.5rem);
}

main {
  flex: 1;
}

/* ---------- 상단 바 ---------- */

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.6rem 0 1.1rem;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.topbar-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.about-link {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  transition: color 0.2s;
}

.about-link:hover {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* 비즈니스 사이트(ivisualworks.com) 유입 CTA — 헤더/푸터 공통 */
.cta-link {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg);
  border: 1px solid var(--line);
  padding: 0.42rem 0.85rem;
  white-space: nowrap;
  transition: border-color 0.2s, background 0.2s;
}

.cta-link:hover {
  border-color: var(--fg);
  background: var(--fg);
  color: var(--bg);
}

.lang-toggle {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  transition: color 0.2s;
}

.lang-toggle:hover {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ---------- 헤드라인 ---------- */

.hero {
  padding: clamp(3.5rem, 9vh, 6rem) 0 clamp(2.5rem, 7vh, 4.5rem);
}

.headline {
  font-size: clamp(2.3rem, 5.6vw, 4.9rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.02em;
  max-width: 22em;
}

.headline .serif {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1.07em;
  letter-spacing: 0;
  color: var(--fg-dim);
}

/* ---------- About 페이지 ---------- */

.about {
  max-width: 48em;
  padding: clamp(3rem, 8vh, 5rem) 0 clamp(2.5rem, 6vh, 4rem);
}

.about-headline {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin-bottom: clamp(1.5rem, 4vh, 2.5rem);
}

.about-lead {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.55;
  max-width: 34em;
}

.about-block {
  margin-top: clamp(2.5rem, 6vh, 4rem);
}

.about-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--muted);
  margin-bottom: 1rem;
}

.about-block p {
  color: var(--fg-dim);
  line-height: 1.75;
  max-width: 40em;
  margin-bottom: 1em;
}

.about-quote {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.35;
  margin: clamp(2.5rem, 6vh, 4rem) 0;
  padding-left: clamp(1.2rem, 2.5vw, 2rem);
  border-left: 1px solid var(--line);
}

.about-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  border-top: 1px solid var(--line);
  padding-top: 1.2rem;
}

.about-facts div {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.fact-label {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.fact-value {
  font-size: 0.95rem;
}

.fact-value a:hover {
  color: var(--fg-dim);
  text-decoration: underline;
}

/* ---------- 카테고리 리스트 ---------- */

.works {
  padding-bottom: clamp(2rem, 6vh, 3.5rem);
}

.category-list {
  list-style: none;
}

.category {
  display: flex;
  align-items: baseline;
  gap: clamp(1.2rem, 3vw, 2.5rem);
  padding: clamp(1rem, 2.6vh, 1.7rem) 0.25rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  animation: rise 0.8s cubic-bezier(0.2, 0.7, 0.2, 1) both;
  transition: padding-left 0.35s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.category:first-child {
  border-top: 1px solid var(--line);
}

.category-index {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1; /* 엔진 간 baseline 정렬 차이 방지 */
  letter-spacing: 0.14em;
  color: var(--muted);
  transition: color 0.3s;
}

.category-name {
  font-size: clamp(0.9rem, 2vw, 1.7rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1; /* 엔진 간 baseline 정렬 차이 방지 */
  color: var(--fg);
  white-space: nowrap;
  transition: color 0.3s, transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* 호버: 이름이 살짝 밀리며 다크닝되고, 번호가 밝아진다 */
.category:hover,
.category:focus-visible {
  padding-left: 0.6rem;
}

.category:hover .category-name,
.category:focus-visible .category-name {
  color: var(--fg-dim);
  transform: translateX(0.6rem);
}

.category:hover .category-index,
.category:focus-visible .category-index {
  color: var(--fg);
}

/* 갤러리로 이어진다는 힌트 (호버 시 오른쪽 화살표) */
.category::after {
  content: '→';
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: transparent;
  transition: color 0.3s;
}

.category:hover::after,
.category:focus-visible::after {
  color: var(--muted);
}

.category:focus-visible {
  outline: 1px solid var(--muted);
  outline-offset: 4px;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.category:nth-child(1) { animation-delay: 0.1s; }
.category:nth-child(2) { animation-delay: 0.16s; }
.category:nth-child(3) { animation-delay: 0.22s; }
.category:nth-child(4) { animation-delay: 0.28s; }
.category:nth-child(5) { animation-delay: 0.34s; }
.category:nth-child(6) { animation-delay: 0.4s; }

/* 리스트 아래 힌트 */

.stage-hint {
  margin-top: clamp(1.6rem, 4vh, 2.4rem);
  padding-left: 0.25rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  color: var(--muted);
}

/* ---------- 하단 바 ---------- */

.bottombar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0.9rem 0 1.2rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.bottombar-center {
  justify-self: center;
}

.bottombar a {
  justify-self: end;
}

.bottombar a:hover {
  color: var(--fg);
}

.bottombar-right {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  justify-self: end;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* ---------- About: 비즈니스 사이트 유입 CTA ---------- */

.about-cta {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.about-cta-lead {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 1.3rem;
}

.about-cta-link {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg);
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.25rem;
  transition: border-color 0.2s;
}

.about-cta-link:hover {
  border-color: var(--fg);
}

/* ---------- 플로팅 프리뷰 패널 ---------- */

.preview {
  position: fixed;
  right: clamp(1.2rem, 3vw, 2.5rem);
  bottom: clamp(5rem, 9vh, 6rem);
  width: min(23vw, 300px);
  aspect-ratio: 3 / 4;
  z-index: 20;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  background: #0d0d0d;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(14px);
  transition: opacity 0.4s ease, transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1),
    visibility 0.4s;
}

.preview.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

/* 구형 Safari(15 미만) 폴백: aspect-ratio 미지원 시 고정 높이로 대체 */
@supports not (aspect-ratio: 3 / 4) {
  .preview {
    height: 50vh;
    max-height: 520px;
  }
}

.preview-media {
  flex: 1;
  min-height: 0;
  position: relative;
  /* 미디어 로드 실패 시 보이는 질감 배경 */
  background: repeating-linear-gradient(45deg, #151515 0 12px, #101010 12px 24px);
}

.preview-media::before {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.35em;
  color: var(--muted);
  text-align: center;
}

.preview-media img,
.preview-media video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 0.55s ease, transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.preview-media img.is-in,
.preview-media video.is-in {
  opacity: 1;
  transform: scale(1);
}

img.is-broken,
video.is-broken {
  display: none;
}

/* 흑백 미니멀리즘 유지: 컬러 원본 사진도 그레이로 통일
   (컬러로 보려면 아래 filter 줄을 삭제) */
.preview-media img {
  filter: grayscale(1) contrast(1.05);
}

.preview-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.65rem 0.9rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  color: var(--muted);
  white-space: nowrap;
}

.preview-counter {
  color: var(--fg);
}

/* ---------- 갤러리 페이지 ---------- */

.gallery {
  padding: clamp(3rem, 8vh, 5rem) 0 clamp(2.5rem, 6vh, 4rem);
}

.gallery-header {
  padding-bottom: clamp(1.4rem, 3.5vh, 2.2rem);
  margin-bottom: clamp(2rem, 5vh, 3rem);
  border-bottom: 1px solid var(--line);
}

.gallery-index {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.gallery-title {
  margin-top: 0.7rem;
  font-size: clamp(1.8rem, 4.5vw, 3.6rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  line-height: 1.1;
}

.gallery-desc {
  margin-top: 1rem;
  color: var(--fg-dim);
  max-width: 34em;
}

.gallery-meta {
  margin-top: 1rem;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}

#gallery-count {
  color: var(--fg);
}

/* 마스너리 그리드 — 사진 고유 비율 유지 */
.gallery-grid {
  columns: 3;
  column-gap: clamp(1rem, 2vw, 1.6rem);
}

.work-item {
  break-inside: avoid;
  margin: 0 0 clamp(1.4rem, 3.5vh, 2.2rem);
}

.work-thumb {
  display: block;
  width: 100%;
  position: relative;
  overflow: hidden;
  background: #0d0d0d;
  border: 1px solid var(--line);
}

.work-thumb img,
.work-thumb video {
  display: block;
  width: 100%;
  /* 흑백 미니멀리즘 유지 (컬러로 보려면 삭제) */
  filter: grayscale(1) contrast(1.05);
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1), opacity 0.4s;
}

.work-item:hover .work-thumb img,
.work-item:hover .work-thumb video {
  transform: scale(1.03);
  opacity: 0.92;
}

/* 영상 작업 표시 배지 */
.work-play {
  position: absolute;
  right: 0.7rem;
  bottom: 0.7rem;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--fg);
  background: rgba(10, 10, 10, 0.55);
  pointer-events: none;
}

/* ---------- 라이트박스 ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 6, 6, 0.96);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox-media {
  max-width: min(90vw, 1400px);
  max-height: 76vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 라이트박스는 원본 색상 그대로 (그리드/프리뷰만 흑백 유지) */
.lightbox-media img,
.lightbox-media video {
  max-width: 100%;
  max-height: 76vh;
  object-fit: contain;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  padding: 1rem;
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--muted);
  transition: color 0.2s;
}

.lightbox-nav:hover {
  color: var(--fg);
}

.lightbox-prev {
  left: clamp(0.5rem, 2vw, 2rem);
}

.lightbox-next {
  right: clamp(0.5rem, 2vw, 2rem);
}

.lightbox-close {
  position: absolute;
  top: clamp(1rem, 3vh, 1.6rem);
  right: clamp(1.2rem, 3vw, 2rem);
  font-size: 0.95rem;
  color: var(--muted);
  transition: color 0.2s;
}

.lightbox-close:hover {
  color: var(--fg);
}

.lightbox-meta {
  position: absolute;
  bottom: clamp(1.2rem, 4vh, 2rem);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 2rem;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  white-space: nowrap;
}

#lightbox-counter {
  color: var(--fg);
}

body.no-scroll {
  overflow: hidden;
}

/* 그리드 반응형: 3열 → 2열 → 1열 */
@media (max-width: 1100px) {
  .gallery-grid {
    columns: 2;
  }
}

@media (max-width: 640px) {
  .gallery-grid {
    columns: 1;
  }
}

/* ---------- 모바일 ---------- */

@media (max-width: 820px) {
  .hero {
    padding: 2.8rem 0 2.2rem;
  }

  .headline {
    font-size: clamp(1.8rem, 7.5vw, 2.5rem);
  }

  .category {
    padding: 0.75rem 0.25rem;
  }

  .category-name {
    font-size: clamp(0.75rem, 3.3vw, 1.05rem);
  }

  .about-facts {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* 프리뷰는 플로팅 대신 리스트 아래에 표시 (탭 → 나타남) */
  .preview {
    position: static;
    width: 100%;
    aspect-ratio: 3 / 4;
    max-height: 52vh;  /* 구형 Safari 폴백 */
    max-height: 52dvh;
    margin-top: 2rem;
    display: none;
  }

  .preview.is-visible {
    display: flex;
  }

  .gallery {
    padding: 2.6rem 0 2rem;
  }

  .lightbox-nav {
    font-size: 0.9rem;
  }

  .lightbox-meta {
    gap: 1.2rem;
  }

  .bottombar {
    grid-template-columns: 1fr;
    gap: 0.4rem;
    justify-items: start;
  }

  .bottombar-center,
  .bottombar a {
    justify-self: start;
  }
}

/* ---------- 접근성: 동작 줄이기 설정 ---------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}