/* ============================================================
   Tokens — 단일 액센트(시안/틸), 근-블랙 네이비 파운데이션
   ============================================================ */
:root {
  /* 파운데이션: 평평한 검정이 아니라 네이비가 도는 근-블랙 */
  --bg-0: #030712;
  --bg-0-blue: #07111f;
  --bg-1: #0a1120;
  --bg-2: #0e1729;

  /* 단일 액센트 — 채도를 낮춘 틸/시안 (구 보라 #7c3aed 폐기) */
  --accent: #3aa8b8;
  --accent-lift: #5ec9d8;
  --accent-deep: #1d6b78;

  /* 메시 필드 전용 (UI 액센트와 분리 — 배경은 코발트/인디고/스틸) */
  --mesh-cobalt: rgba(29, 78, 216, 0.5);
  --mesh-indigo: rgba(49, 46, 129, 0.55);
  --mesh-steel: rgba(56, 90, 124, 0.46);
  --mesh-haze: rgba(199, 231, 238, 0.14);

  --border: rgba(191, 219, 254, 0.1);
  --border-strong: rgba(226, 232, 240, 0.22);
  --border-hover: rgba(58, 168, 184, 0.45);

  --text: #f1f5f9;
  --text-sub: #93a4b8;
  --text-mute: #64748b;

  /* 테두리 그라디언트 (css-border-gradient) */
  --edge: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.34),
    rgba(58, 168, 184, 0.3) 45%,
    rgba(255, 255, 255, 0.05)
  );

  /* 반경 — 균일하지 않게: 안쪽은 타이트, 컨테이너는 부드럽게 */
  --r-xs: 4px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-xl: 32px;

  /* z-index 스케일 (9999 금지) */
  --z-grain: 1;
  --z-blur: 40;
  --z-nav: 50;

  --max-width: min(92vw, 1320px);
  --page-pad: clamp(16px, 4vw, 48px);
  --nav-h: 68px;

  /* Geist 가 라틴, Pretendard 가 한글을 맡도록 이 순서를 유지할 것 */
  --font-sans: "Geist", "Pretendard", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ============================================================
   Reset
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background: var(--bg-0);
  min-height: 100dvh;
}
/* 파운데이션 글로우는 고정 레이어로 — background-attachment:fixed 의 스크롤 리페인트 회피 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% -10%, rgba(29, 78, 216, 0.16), transparent 42rem),
    linear-gradient(180deg, var(--bg-0-blue), var(--bg-0) 46%, #01030a);
}
::selection { background: var(--accent-lift); color: #041016; }

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }
img { display: block; max-width: 100%; }

h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }

/* 키보드 접근성 — 전역 포커스 링 (기존 0건) */
:focus-visible {
  outline: 2px solid var(--accent-lift);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

/* 본문 바로가기 */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: var(--r-sm);
  background: var(--accent);
  color: #041016;
  font-size: 14px;
  font-weight: 600;
  transform: translateY(-160%);
  transition: transform 200ms var(--ease);
}
.skip-link:focus-visible { transform: translateY(0); }

/* ============================================================
   Layout
   ============================================================ */
main {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-pad);
}

/* ============================================================
   :lang() 스왑 (전역 적용)
   ============================================================ */
:root[lang="ko"] [lang="en"],
:root[lang="en"] [lang="ko"] { display: none; }

/* ============================================================
   Grain — 디지털 평면감 제거 (JS 주입, 전 페이지 공통)
   ============================================================ */
.grain {
  position: fixed;
  inset: 0;
  z-index: var(--z-grain);
  pointer-events: none;
  opacity: 0.038;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================================
   Progressive blur — 상단 8층 backdrop-filter 마스크 스택
   ============================================================ */
.gradient-blur {
  position: fixed;
  z-index: var(--z-blur);
  inset: 0 0 auto 0;
  height: 130px;
  pointer-events: none;
}
.gradient-blur > div,
.gradient-blur::before,
.gradient-blur::after {
  position: absolute;
  inset: 0;
}
.gradient-blur::before {
  content: "";
  z-index: 1;
  backdrop-filter: blur(0.5px);
  -webkit-backdrop-filter: blur(0.5px);
  mask: linear-gradient(to top, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 12.5%, rgba(0,0,0,1) 25%, rgba(0,0,0,0) 37.5%);
}
.gradient-blur > div:nth-of-type(1) {
  z-index: 2;
  backdrop-filter: blur(1px);
  -webkit-backdrop-filter: blur(1px);
  mask: linear-gradient(to top, rgba(0,0,0,0) 12.5%, rgba(0,0,0,1) 25%, rgba(0,0,0,1) 37.5%, rgba(0,0,0,0) 50%);
}
.gradient-blur > div:nth-of-type(2) {
  z-index: 3;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  mask: linear-gradient(to top, rgba(0,0,0,0) 25%, rgba(0,0,0,1) 37.5%, rgba(0,0,0,1) 50%, rgba(0,0,0,0) 62.5%);
}
.gradient-blur > div:nth-of-type(3) {
  z-index: 4;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  mask: linear-gradient(to top, rgba(0,0,0,0) 37.5%, rgba(0,0,0,1) 50%, rgba(0,0,0,1) 62.5%, rgba(0,0,0,0) 75%);
}
.gradient-blur > div:nth-of-type(4) {
  z-index: 5;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  mask: linear-gradient(to top, rgba(0,0,0,0) 50%, rgba(0,0,0,1) 62.5%, rgba(0,0,0,1) 75%, rgba(0,0,0,0) 87.5%);
}
.gradient-blur > div:nth-of-type(5) {
  z-index: 6;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  mask: linear-gradient(to top, rgba(0,0,0,0) 62.5%, rgba(0,0,0,1) 75%, rgba(0,0,0,1) 87.5%, rgba(0,0,0,0) 100%);
}
.gradient-blur > div:nth-of-type(6) {
  z-index: 7;
  backdrop-filter: blur(32px);
  -webkit-backdrop-filter: blur(32px);
  mask: linear-gradient(to top, rgba(0,0,0,0) 75%, rgba(0,0,0,1) 87.5%, rgba(0,0,0,1) 100%);
}
.gradient-blur::after {
  content: "";
  z-index: 8;
  backdrop-filter: blur(64px);
  -webkit-backdrop-filter: blur(64px);
  mask: linear-gradient(to top, rgba(0,0,0,0) 87.5%, rgba(0,0,0,1) 100%);
}

/* ============================================================
   Nav — 로고 + 링크 필(pill)
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--nav-h);
  padding: 0 var(--page-pad);
  max-width: var(--max-width);
  margin: 0 auto;
}
.nav-logo {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--text);
}
.nav-logo:hover { color: var(--accent-lift); }

/* 링크 묶음 = 다크 반투명 필 + 옅은 엣지 그라디언트 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 5px;
  font-size: 14px;
  color: var(--text-sub);
  border: 1px solid transparent;
  border-radius: 999px;
  background:
    linear-gradient(rgba(5, 12, 24, 0.72), rgba(5, 12, 24, 0.72)) padding-box,
    linear-gradient(120deg, rgba(255, 255, 255, 0.24), rgba(58, 168, 184, 0.16), rgba(255, 255, 255, 0.04)) border-box;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.nav-links > a {
  padding: 7px 14px;
  border-radius: 999px;
  transition: color 180ms var(--ease), background 180ms var(--ease);
}
.nav-links > a:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }

/* 현재 보고 있는 섹션 표시 (기존엔 없음) */
.nav-links > a[aria-current="true"] {
  color: var(--text);
  background: rgba(58, 168, 184, 0.14);
}
.lang-toggle {
  margin-left: 6px;
  padding: 7px 11px;
  border-radius: 999px;
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--text-sub);
  background: rgba(255, 255, 255, 0.05);
  transition: color 180ms var(--ease), background 180ms var(--ease);
}
.lang-toggle:hover { color: var(--text); background: rgba(255, 255, 255, 0.1); }
.lang-toggle:active { transform: scale(0.96); }

/* ============================================================
   Hero — 메시 그라디언트 쉘 (시스템 셸 안의 절차적 필드)
   ============================================================ */
.hero { padding: 40px 0 88px; }

.hero-shell {
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
  border-radius: var(--r-xl);
  background:
    linear-gradient(rgba(7, 13, 25, 0.82), rgba(7, 13, 25, 0.82)) padding-box,
    linear-gradient(145deg, rgba(255, 255, 255, 0.44), rgba(58, 168, 184, 0.18), rgba(255, 255, 255, 0.04)) border-box;
  box-shadow:
    0 40px 100px rgba(1, 5, 14, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* 절차적 메시 필드 (canvas) */
.hero-field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.8;
  pointer-events: none;
}

/* 얇은 수직 레일 + 코너 마커 = 인프라 느낌의 시스템 셸 */
.mesh-rail {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--border), transparent);
  pointer-events: none;
}
.mesh-rail--a { left: 12%; }
.mesh-rail--b { right: 22%; }

.mesh-corner {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--border-strong);
  pointer-events: none;
}
.mesh-corner--tl { top: 18px; left: 18px; }
.mesh-corner--tr { top: 18px; right: 18px; }
.mesh-corner--bl { bottom: 18px; left: 18px; }
.mesh-corner--br { bottom: 18px; right: 18px; }

.hero-content {
  position: relative;
  z-index: 2;
  padding: clamp(32px, 5.5vw, 76px);
  background: linear-gradient(180deg, rgba(4, 9, 18, 0.18), rgba(4, 9, 18, 0.58));
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-sub);
  margin: 0 0 20px;
  text-transform: uppercase;
}
.hero-title {
  font-size: clamp(36px, 5.6vw, 60px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.06;
  margin: 0 0 24px;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-sub);
  max-width: 58ch;
  margin: 0 0 40px;
  line-height: 1.65;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* 플로팅 노드 — 희소하게, 두 개만 */
.hero-nodes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
}
.mesh-node {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 13px 7px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(5, 12, 24, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text-sub);
}
.mesh-node::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-lift);
  box-shadow: 0 0 16px rgba(94, 201, 216, 0.7);
}

/* ============================================================
   Buttons — 솔리드 1 + 글래스 1, 눌림 피드백 포함
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 13px 22px;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 600;
  transition: transform 180ms var(--ease), background 180ms var(--ease),
    border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}
.btn-primary {
  background: var(--accent);
  color: #041016;
  box-shadow: 0 14px 32px rgba(29, 107, 120, 0.32);
}
.btn-primary:hover {
  background: var(--accent-lift);
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(29, 107, 120, 0.42);
}
.btn-primary:active { transform: translateY(1px) scale(0.985); box-shadow: none; }

.btn-ghost {
  color: var(--text);
  border: 1px solid transparent;
  background:
    linear-gradient(rgba(5, 12, 24, 0.62), rgba(5, 12, 24, 0.62)) padding-box,
    linear-gradient(135deg, rgba(255, 255, 255, 0.26), rgba(58, 168, 184, 0.14), rgba(255, 255, 255, 0.04)) border-box;
}
.btn-ghost:hover { transform: translateY(-2px); background: rgba(255, 255, 255, 0.06); }
.btn-ghost:active { transform: translateY(1px) scale(0.985); }

/* ============================================================
   Sections
   ============================================================ */
.section {
  padding: 72px 0 80px; /* 하단을 광학적으로 살짝 더 */
  scroll-margin-top: calc(var(--nav-h) + 24px);
}
.section-title {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin: 0 0 36px;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 14px;
}
/* 제목 옆으로 흐르는 얇은 레일 */
.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

/* ============================================================
   Cards — 벤토형 비대칭 그리드 (3열 균등 폐기)
   ============================================================ */
.cards {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.card {
  position: relative;
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 22px;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease),
    box-shadow 220ms var(--ease), background 220ms var(--ease);
}
.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  background: var(--bg-2);
  /* 배경 색조를 띤 그림자 (순수 검정 금지) */
  box-shadow: 0 16px 40px rgba(3, 20, 26, 0.6);
}
a.card:active { transform: translateY(-1px) scale(0.995); }

/* 첫 행 2장 + 마지막 행 2장을 넓게 → 좌우 대칭 북엔드, 가운데는 3열 */
#work .card:nth-child(1),
#work .card:nth-child(2),
#work .card:nth-child(9),
#work .card:nth-child(10) {
  grid-column: span 3;
}

/* 강조 카드에만 테두리 그라디언트 (한 계층에만 적용) */
#work .card:nth-child(1),
#work .card:nth-child(2) {
  border-color: transparent;
}
#work .card:nth-child(1)::before,
#work .card:nth-child(2)::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--edge);
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
#work .card:nth-child(1) .card-title,
#work .card:nth-child(2) .card-title { font-size: 21px; }
#work .card:nth-child(1) .card-icon,
#work .card:nth-child(2) .card-icon { width: 52px; height: 52px; }

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.card-icon { border-radius: 22%; }
.card-icon.is-soft { border-radius: 10px; }

.card-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 8px;
}
.card-desc {
  font-size: 14px;
  color: var(--text-sub);
  margin: 0 0 20px;
  line-height: 1.6;
  max-width: 62ch;
}
/* 스택 줄을 카드 바닥에 고정 → 한 행에서 베이스라인이 맞음 (min-height 핵 제거) */
.card-stack {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-mute);
  margin: auto 0 0;
  letter-spacing: 0.02em;
}

/* 배지 — 알약형 대신 각진 라벨 */
.badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  padding: 4px 8px;
  border-radius: var(--r-xs);
}
.badge-live {
  background: rgba(58, 168, 184, 0.12);
  color: var(--accent-lift);
  border: 1px solid rgba(58, 168, 184, 0.24);
}

/* 웹 서비스 — 3장을 한 행에 (Sitedex · Web SSH · 혜택 웹) */
#web .card { grid-column: span 2; }

/* 사이드 프로젝트 — 4열 균등 폐기.
   썸네일 원본이 세로 폰 스크린샷(480×720)과 가로 다이어그램(960×640)으로 섞여 있어,
   넓은 가로 프레임에 cover 로 넣으면 확대·헤드라인 절단이 난다.
   → 카드를 가로 분할하고 썸네일을 세로 프레임(152px)에 둬 항상 축소 렌더되게 한다. */
#side .cards { grid-template-columns: repeat(2, 1fr); gap: 20px; }
#side .card {
  grid-column: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 152px;
  gap: 22px;
  align-items: stretch;
}
.card-side { cursor: default; }
.card-side:hover { transform: none; border-color: var(--border-hover); }
.side-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.side-main .card-stack { margin-top: auto; }
.side-thumb {
  width: 152px;
  height: 100%;
  min-height: 214px;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--r-md);
  display: block;
  background: #0e1525;
  border: 1px solid var(--border);
}
/* 가로형 다이어그램(960×640)은 세로 프레임에서 좌우가 잘리므로 통째로 담는다 */
.side-thumb.is-diagram {
  object-fit: contain;
  object-position: center;
  padding: 10px;
}
.side-cta { align-self: flex-start; margin-top: 14px; }

/* ============================================================
   Timeline — 단일 액센트, 회사 구분은 명도/채움으로
   ============================================================ */
.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 80px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--border) 8%, var(--border) 92%, transparent);
}
.tl-item {
  display: grid;
  grid-template-columns: 64px 16px 1fr;
  gap: 16px;
  padding: 10px 0;
  position: relative;
}
.tl-item::before {
  content: "";
  position: absolute;
  left: 74px;
  top: 26px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--bg-0);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px var(--bg-0);
  transition: transform 200ms var(--ease), background 200ms var(--ease);
}
/* dooha = 채운 점(밝게) · masco = 빈 점(어둡게) — 색 대신 명도로 구분 */
.tl-item[data-company="dooha"]::before { border-color: var(--accent); }
.tl-item[data-company="masco"]::before { border-color: var(--accent-deep); }
.tl-item:hover::before { transform: scale(1.18); background: var(--accent); }
.tl-item[data-company="masco"]:hover::before { background: var(--accent-deep); }

.tl-year {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text-mute);
  padding-top: 22px;
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.tl-body {
  grid-column: 3;
  min-width: 0;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 18px 22px;
  transition: border-color 220ms var(--ease), transform 220ms var(--ease),
    box-shadow 220ms var(--ease);
}
.tl-item:hover .tl-body {
  border-color: var(--border-hover);
  transform: translateX(4px);
  box-shadow: 0 8px 24px rgba(3, 20, 26, 0.5);
}
.tl-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.tl-role {
  display: inline-block;
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 3px 10px;
  border-radius: var(--r-xs);
  margin: 0 0 12px;
  background: rgba(58, 168, 184, 0.1);
  color: var(--accent-lift);
  border: 1px solid rgba(58, 168, 184, 0.22);
}
.tl-item[data-company="masco"] .tl-role {
  background: rgba(148, 163, 184, 0.07);
  color: var(--text-sub);
  border-color: rgba(148, 163, 184, 0.16);
}
.tl-desc {
  font-size: 14px;
  color: var(--text-sub);
  margin: 0 0 10px;
  line-height: 1.6;
  max-width: 70ch;
}
.tl-stack {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-mute);
  margin: 0;
}

/* ============================================================
   Chips (Stack)
   ============================================================ */
.chips {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 7px 13px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
  background: var(--bg-1);
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}
.chip:hover { border-color: var(--border-hover); }
.chip-muted { color: var(--text-mute); }

/* ============================================================
   Contact
   ============================================================ */
.contact-line {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  margin: 0 0 12px;
  flex-wrap: wrap;
}
.contact-link {
  color: var(--accent-lift);
  font-weight: 600;
  letter-spacing: -0.01em;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms var(--ease);
}
.contact-link:hover { border-bottom-color: var(--accent-lift); }
.copy-btn {
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 11px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text-sub);
  transition: border-color 180ms var(--ease), color 180ms var(--ease), transform 120ms var(--ease);
}
.copy-btn:hover { border-color: var(--border-hover); color: var(--text); }
.copy-btn:active { transform: scale(0.95); }
.copy-btn.copied { color: var(--accent-lift); border-color: var(--accent); }
.contact-sub {
  font-size: 14px;
  color: var(--text-sub);
  margin: 0;
  max-width: 62ch;
}

/* 외주 서비스 — 플랫폼 브랜드색은 점·라벨에만 (UI 액센트와 분리) */
.svc-section { margin-top: 40px; }
.svc-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin: 0 0 16px;
}
.svc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(184px, 1fr));
  gap: 12px;
}
.svc-card {
  --svc-accent: var(--accent);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 7px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 16px 16px 15px;
  overflow: hidden;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease);
}
.svc-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--svc-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms var(--ease);
}
.svc-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--svc-accent) 45%, transparent);
  box-shadow: 0 12px 30px color-mix(in srgb, var(--svc-accent) 14%, transparent);
}
.svc-card:active { transform: translateY(-1px) scale(0.995); }
.svc-card:hover::before { transform: scaleX(1); }
.svc-top { display: flex; align-items: center; justify-content: space-between; }
.svc-plat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--svc-accent);
}
.svc-plat::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--svc-accent);
}
.svc-arrow {
  color: var(--text-mute);
  font-size: 13px;
  transition: transform 220ms var(--ease), color 220ms var(--ease);
}
.svc-card:hover .svc-arrow { color: var(--svc-accent); transform: translate(2px, -2px); }
.svc-name { font-size: 15px; font-weight: 600; color: var(--text); }
.svc-tech { font-family: var(--font-mono); font-size: 11px; color: var(--text-mute); }
.svc-fiverr { --svc-accent: #1dbf73; }
.svc-kmong { --svc-accent: #fc5230; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  position: relative;
  max-width: var(--max-width);
  margin: 64px auto 0;
  padding: 40px var(--page-pad) 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-mute);
  border-top: 1px solid var(--border);
}
.footer p { margin: 0; }
.footer-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-sub);
  transition: color 180ms var(--ease);
}
.footer-top:hover { color: var(--accent-lift); }

/* ============================================================
   섹션 등장 — 스태거 진입 (transform/opacity 만)
   ============================================================ */
.hero, .section, .detail-hero {
  transform: translateY(16px);
  opacity: 1;
  transition: transform 700ms var(--ease);
}
.hero.in-view, .section.in-view, .detail-hero.in-view { transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero, .section, .detail-hero { transform: none; transition: none; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1100px) {
  /* 벤토 해제 → 2열 */
  .cards { grid-template-columns: repeat(4, 1fr); }
  .card,
  #work .card:nth-child(1),
  #work .card:nth-child(2),
  #work .card:nth-child(9),
  #work .card:nth-child(10),
  #web .card { grid-column: span 2; }
}

@media (max-width: 980px) {
  #side .cards { grid-template-columns: 1fr; }
}

@media (max-width: 780px) {
  .nav-links > a { padding: 7px 10px; }
  .hero-nodes { display: none; }
  .mesh-rail { display: none; }
}

@media (max-width: 640px) {
  main { padding: 0 16px; }
  .nav { padding: 0 16px; }
  .nav-links { font-size: 13px; }

  .hero { padding: 24px 0 56px; }
  .hero-title { font-size: clamp(28px, 8vw, 40px); }
  .hero-sub { font-size: 16px; margin-bottom: 32px; }
  .hero-content { padding: 28px 22px 34px; }
  .hero-shell { border-radius: var(--r-lg); }
  .mesh-corner { display: none; }

  .section { padding: 48px 0 56px; }

  .cards { grid-template-columns: 1fr; gap: 12px; }
  .card,
  #work .card:nth-child(1),
  #work .card:nth-child(2),
  #work .card:nth-child(9),
  #work .card:nth-child(10),
  #web .card { grid-column: auto; }
  #work .card:nth-child(1) .card-title,
  #work .card:nth-child(2) .card-title { font-size: 18px; }
  #work .card:nth-child(1) .card-icon,
  #work .card:nth-child(2) .card-icon { width: 40px; height: 40px; }

  /* 모바일: 가로 분할 해제, 썸네일은 텍스트 아래로 */
  #side .card { grid-template-columns: 1fr; gap: 16px; }
  .side-thumb { width: 100%; height: 190px; min-height: 0; }

  .timeline::before { left: 12px; }
  .tl-item { grid-template-columns: 32px 1fr; gap: 12px; padding: 8px 0; }
  .tl-item::before { left: 6px; top: 26px; }
  .tl-year {
    grid-column: 1 / -1;
    text-align: left;
    padding-left: 32px;
    padding-top: 0;
    margin-bottom: 4px;
  }
  .tl-body { grid-column: 2; padding: 14px 16px; }
  .tl-item:hover .tl-body { transform: none; }

  .contact-line { font-size: 17px; }
  .footer { justify-content: flex-start; }
}

/* ============================================================
   Detail Pages (projects/*.html)
   ============================================================ */
.detail-back-link {
  font-size: 13px;
  color: var(--text-sub);
  font-family: var(--font-mono);
  transition: color 180ms var(--ease);
}
.detail-back-link:hover { color: var(--text); }

.detail-hero {
  padding: 56px 0 64px;
  position: relative;
}
.detail-hero-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0 0 24px;
}
.detail-hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 22%;
  border: 1px solid var(--border);
}
.detail-hero-title {
  font-size: clamp(36px, 6vw, 52px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.06;
  margin: 0 0 16px;
}
.detail-hero-sub {
  font-size: 18px;
  color: var(--text-sub);
  max-width: 62ch;
  margin: 0 0 32px;
  line-height: 1.6;
}
.detail-hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.detail-screenshots {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}
.detail-ss {
  width: 100%;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  background: var(--bg-1);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}
.detail-ss:hover { transform: translateY(-3px); border-color: var(--border-hover); }
.detail-ss-placeholder {
  aspect-ratio: 9 / 16;
  border: 1.5px dashed var(--border);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  color: var(--text-mute);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
}

.detail-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.feature {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-1);
  transition: border-color 220ms var(--ease);
}
.feature:hover { border-color: var(--border-hover); }
.feature-icon {
  font-size: 24px;
  margin: 0 0 12px;
  display: block;
  line-height: 1;
}
.feature-title {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 6px;
}
.feature-title .feature-beta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  padding: 2px 6px;
  border-radius: var(--r-xs);
  margin-left: 8px;
  background: rgba(58, 168, 184, 0.12);
  color: var(--accent-lift);
  vertical-align: middle;
}
.feature-desc {
  font-size: 13px;
  color: var(--text-sub);
  margin: 0;
  line-height: 1.6;
}

.detail-stack { margin: 0 0 20px; }
.detail-stack-why {
  position: relative;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 18px 22px;
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
}
.detail-stack-why::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 2px;
  background: var(--accent);
}
.detail-stack-why-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent-lift);
  text-transform: uppercase;
  margin: 0 0 6px;
}

.detail-arch pre {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 22px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.55;
  color: var(--text);
  margin: 0 0 16px;
}
.detail-arch-note {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
  margin: 0 0 12px;
  max-width: 70ch;
}

.detail-challenges { display: grid; gap: 14px; }
.challenge {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-1);
}
.challenge-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 14px;
  padding: 8px 0;
}
.challenge-row + .challenge-row { border-top: 1px solid var(--border); }
.challenge-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-mute);
  padding-top: 4px;
}
.challenge-label.is-problem { color: #d98a8a; }
.challenge-label.is-approach { color: var(--text-sub); }
.challenge-label.is-result { color: var(--accent-lift); }
.challenge-body {
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
  max-width: 70ch;
}

.detail-status-line {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 16px;
  margin: 0 0 8px;
}
.detail-status-next {
  font-size: 14px;
  color: var(--text-sub);
  margin: 0;
}

.detail-back-cta {
  display: inline-block;
  padding: 14px 22px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  font-size: 15px;
  font-weight: 500;
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}
.detail-back-cta:hover { border-color: var(--border-hover); transform: translateX(-4px); }
.detail-back-cta:active { transform: translateX(-2px) scale(0.99); }

@media (max-width: 960px) {
  .detail-screenshots { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .detail-hero { padding: 32px 0 40px; }
  .detail-hero-icon { width: 72px; height: 72px; }
  .detail-hero-title { font-size: clamp(28px, 8vw, 40px); }
  .detail-hero-sub { font-size: 16px; }

  .detail-screenshots { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .detail-features { grid-template-columns: 1fr; }

  .challenge-row { grid-template-columns: 1fr; gap: 4px; }
  .challenge-label { padding-top: 0; }
}