/* ==========================================================================
   VERIX Solution — style.css
   디자인 토큰 → 베이스 → 레이아웃 → 섹션 → 반응형 순서
   ========================================================================== */

:root {
  --navy:   #101B33;
  --blue:   #2456E6;
  --blue-h: #2E63F7;
  --cyan:   #22C3E6;
  --cyan-d: #4ED9F2;
  --mint:   #19C6A6;
  --paper:  #F6F7F9;
  --ink:    #12151C;
  --muted:  #8A91A0;
  --line:   #E3E6EB;

  /* 다크 배경 위 텍스트 */
  --on-navy:      #FFFFFF;
  --on-navy-soft: #B9C0CE;
  --on-navy-dim:  #5B6270;
  /* 라이트 배경 위 본문 (AA 대비 확보) */
  --body:   #5B6270;

  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: Pretendard, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --wrap: 1160px;
  --pad:  24px;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 14px;
}

/* --------------------------------------------------------------- 베이스 -- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  /* sticky 헤더에 앵커가 가리지 않도록 */
  scroll-padding-top: 80px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--sans);
  /* 각 섹션이 자기 배경을 갖는다. body 는 오버스크롤·여백 영역용(푸터와 동일 톤) */
  background: var(--navy);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  /* 한글은 기본값에서 음절 단위로 잘린다("하나의 흐 / 름으로").
     어절(띄어쓰기) 단위로만 줄바꿈되게 하고, 끊을 수 없는 긴 영문·URL 은
     넘치지 않도록 break-word 로 받아준다. */
  word-break: keep-all;
  overflow-wrap: break-word;
}

img, svg, canvas { display: block; max-width: 100%; }
h1, h2, h3, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }

a { color: var(--blue); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--cyan); }

button { font: inherit; }

::selection { background: var(--blue); color: #fff; }

:focus-visible {
  outline: 2px solid var(--cyan-d);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--cyan-d);
  color: var(--navy);
  font-weight: 700;
  padding: 12px 20px;
  border-radius: 0 0 var(--r-md) 0;
}
.skip-link:focus { left: 0; color: var(--navy); }

.container {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.muted-weak { color: var(--muted); font-weight: 500; }

/* ------------------------------------------------------------------ 내비 -- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(16, 27, 51, .92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.nav__inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: #fff;
  flex-shrink: 0;
}
.brand:hover { color: #fff; }
.brand__word {
  font-size: 27px;
  font-weight: 800;
  letter-spacing: .06em;
  line-height: 1.1;
}
.brand__x {
  background: linear-gradient(120deg, var(--cyan-d) 40%, var(--blue) 60%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand__sub {
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .28em;
  color: var(--muted);
  white-space: nowrap;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 28px;
}
/* .btn 은 제외 — 버튼 자체 색상이 덮이지 않도록 */
.nav__menu > a:not(.btn) {
  color: var(--on-navy-soft);
  font-size: 14px;
  font-weight: 500;
}
.nav__menu > a:not(.btn):hover { color: var(--cyan-d); }
.nav__menu > a.is-active { color: var(--cyan-d); }

/* 모바일 토글 (768px 미만에서만 노출) */
.nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: var(--r-sm);
  cursor: pointer;
}
.nav__bars,
.nav__bars::before,
.nav__bars::after {
  display: block;
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}
.nav__bars { margin: 0 auto; position: relative; }
.nav__bars::before, .nav__bars::after { content: ''; position: absolute; left: 0; }
.nav__bars::before { top: -6px; }
.nav__bars::after  { top: 6px; }
.nav__toggle[aria-expanded="true"] .nav__bars { background: transparent; }
.nav__toggle[aria-expanded="true"] .nav__bars::before { transform: translateY(6px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__bars::after  { transform: translateY(-6px) rotate(-45deg); }

/* ------------------------------------------------------------------ 버튼 -- */
.btn {
  display: inline-block;
  font-size: 16px;
  font-weight: 700;
  padding: 15px 32px;
  border-radius: var(--r-md);
  transition: background .15s ease, color .15s ease, border-color .15s ease, transform .15s ease;
  white-space: nowrap;
}
.btn--sm { font-size: 14px; padding: 8px 18px; border-radius: var(--r-sm); }

.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-h); color: #fff; transform: translateY(-2px); }

.btn--ghost {
  border: 1px solid rgba(255, 255, 255, .25);
  color: #fff;
  font-weight: 600;
}
.btn--ghost:hover { border-color: var(--cyan-d); color: var(--cyan-d); }

.btn--accent { background: var(--cyan-d); color: var(--navy); }
.btn--accent:hover { background: #fff; color: var(--navy); }

/* ------------------------------------------------------------------ 히어로 -- */
.hero {
  position: relative;
  background: var(--navy);
  overflow: hidden;
}
.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: .85;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  padding-top: clamp(72px, 10vw, 120px);
  padding-bottom: clamp(64px, 8vw, 96px);
}
.hero__title {
  font-size: clamp(32px, 6vw, 56px);
  line-height: 1.18;
  font-weight: 800;
  color: #fff;
  letter-spacing: -.02em;
  max-width: 760px;
  text-wrap: balance;
}
.hero__lead {
  margin-top: 28px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.7;
  color: var(--on-navy-soft);
  max-width: 620px;
  text-wrap: pretty;
}
.hero__cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.stats {
  display: flex;
  gap: clamp(28px, 5vw, 56px);
  flex-wrap: wrap;
  margin-top: clamp(48px, 8vw, 88px);
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}
.stat__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(28px, 4vw, 34px);
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.stat__plus { color: var(--cyan-d); }
.stat__label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
  letter-spacing: .08em;
}
.stat--wide { max-width: 420px; }

/* ------------------------------------------------------------------ 섹션 -- */
.section { padding: clamp(64px, 9vw, 96px) 0; }
.section--paper { background: var(--paper); }
.section--white { background: #fff; border-top: 1px solid var(--line); }
.section--navy  { background: var(--navy); }
.section--contact { padding-bottom: 0; }

.eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--blue);
  margin-bottom: 12px;
}
.eyebrow--dark { color: var(--cyan-d); letter-spacing: .22em; }

.section__title {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -.01em;
  line-height: 1.3;
  margin-bottom: 12px;
}
.section__title--dark { color: #fff; }
.section__title--lg { font-size: clamp(28px, 4.4vw, 40px); margin-bottom: 20px; text-wrap: balance; }

.section__lead {
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--muted);
  max-width: 640px;
  text-wrap: pretty;
  margin-bottom: 36px;
}
.section__lead--dark { color: var(--on-navy-soft); }

/* 타이틀 바로 아래에 그리드가 오는 섹션은 여백 보정 */
.section__title + .grid,
.section__title + .chips { margin-top: 36px; }

/* ------------------------------------------------------------- Expertise -- */
.grid { display: grid; gap: 20px; }
.grid--domains { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.card--domain { padding: 28px; }
.card--domain:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(16, 27, 51, .1); }

.card__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.card__title {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}
.card__desc {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--body);
  text-wrap: pretty;
}

/* ------------------------------------------------------------- Portfolio -- */
.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.filter {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 999px;
  cursor: pointer;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--body);
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.filter:hover { border-color: var(--blue); color: var(--blue); }
.filter[aria-selected="true"] {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--cyan-d);
}

.grid--projects { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; }

.project {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease;
}
.project:hover { transform: translateY(-5px); box-shadow: 0 16px 40px rgba(16, 27, 51, .12); }

.project__fig {
  height: 140px;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.project__fig img { width: 100%; height: 100%; object-fit: cover; }

.project__body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.project__badge {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  padding: 4px 10px;
  border-radius: 4px;
}
.project__name {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
}
.project__desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--body);
  flex: 1;
  text-wrap: pretty;
}
.project__tags { display: flex; gap: 6px; flex-wrap: wrap; }

/* 상세 페이지가 연결된 프로젝트 카드 */
.project--linked { position: relative; border-color: rgba(36, 86, 230, .28); }
.project__more {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--blue);
  text-decoration: none;
  margin-top: 2px;
}
.project__more::after { content: ''; position: absolute; inset: 0; } /* 카드 전체를 클릭 영역으로 */
.project--linked:hover .project__more { color: var(--blue-h); text-decoration: underline; }
.project__more:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; border-radius: 4px; }

.tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--body);
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 3px 9px;
  border-radius: 4px;
}

.grid__empty {
  margin-top: 24px;
  font-size: 15px;
  color: var(--muted);
}

/* --------------------------------------------------------------- Process -- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px 0;
}
.step { padding-right: 28px; }
.step__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.step__num {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
  background: var(--cyan-d);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step__rule { flex: 1; height: 1px; background: rgba(255, 255, 255, .14); }
.step__title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.step__en {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan-d);
  margin-bottom: 10px;
}
.step__desc { font-size: 14px; line-height: 1.65; color: var(--muted); text-wrap: pretty; }

/* ----------------------------------------------------------------- Stack -- */
.chips { display: flex; gap: 10px; flex-wrap: wrap; }
.chip {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 12px 20px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  transition: border-color .15s ease;
}
.chip:hover { border-color: var(--blue); }
.chip__dot { width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0; }

/* --------------------------------------------------------- Contact / 푸터 -- */
.contact__row {
  display: flex;
  gap: 32px;
  align-items: center;
  flex-wrap: wrap;
  padding-bottom: 80px;
}
.contact__addr { font-size: 15px; color: var(--muted); }

.footer {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 28px 0 36px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.footer__biz  { font-size: 13px; color: var(--on-navy-dim); }
.footer__copy { font-family: var(--mono); font-size: 13px; color: var(--on-navy-dim); }

/* ------------------------------------------------------------ 스크롤 리빌 -- */
/* JS가 살아있을 때만 숨김 상태로 시작 — 스크립트 실패 시 콘텐츠가 사라지지 않도록 */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.js .reveal.is-visible { opacity: 1; transform: none; }

/* --------------------------------------------------------------- 반응형 -- */
@media (max-width: 767px) {
  html { scroll-padding-top: 72px; }

  /* 좁은 화면에서 로고와 메뉴 버튼이 부딪히지 않게 조금 줄인다 */
  .brand__word { font-size: 23px; }
  .brand__sub  { font-size: 10px; letter-spacing: .22em; }

  .nav__toggle { display: block; }
  .nav__menu {
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--navy);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    padding: 8px 0 16px;
  }
  .nav__menu.is-open { display: flex; }
  .nav__menu > a:not(.btn) {
    padding: 14px var(--pad);
    font-size: 15px;
  }
  .nav__menu > .btn {
    margin: 8px var(--pad) 0;
    text-align: center;
  }

  .stats { gap: 24px 32px; }
  .stat--wide { max-width: none; }
  .step { padding-right: 0; }
  .contact__row { gap: 16px; align-items: flex-start; }
  .grid--projects { grid-template-columns: 1fr; }
}

@media (min-width: 1080px) {
  .grid--projects { grid-template-columns: repeat(3, 1fr); }
}

/* ------------------------------------------------------- 모션 최소화 존중 -- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  .hero__canvas { display: none; }
}