/* ========================================
   Imageight Corporate Site — "Modern Grid" Style
   Aesthetic: Bold Typography / Grid Lines / Light Gray
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&family=Manrope:wght@400;500;600;700;800&display=swap');

:root {
  --white: #ffffff;
  --black: #111111;
  --gray-bg: #f2f4f6;
  --gray-line: #dcdfe3;
  --gray-text: #555555;
  
  --accent: #111111;

  --font-en: 'Manrope', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-body: var(--font-jp);

  --section-y: clamp(6rem, 10vw, 9rem);
  --content-max: 1280px;
  --px: clamp(1.5rem, 5vw, 4rem);

  --radius: 0px; /* シャープなデザイン */
  --transition: 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--gray-bg);
  color: var(--black);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  /* 背景グリッド */
  /* background-image: 
    linear-gradient(var(--gray-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--gray-line) 1px, transparent 1px);
  background-size: 200px 200px;
  background-position: center top; */
}

img { width: 100%; height: 100%; object-fit: cover; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }

/* ===== UTILITIES ===== */
.img-wrap { overflow: hidden; position: relative; }
.img-wrap img { transition: transform 0.6s ease; }
.hover-zoom:hover .img-wrap img { transform: scale(1.03); }

/* 背景の巨大文字 */
.bg-big-text {
  position: absolute;
  top: -60px;
  left: 0;
  font-family: var(--font-en);
  font-weight: 800;
  font-size: clamp(6rem, 15vw, 12rem);
  line-height: 1;
  color: var(--white);
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--gray-bg); }
::-webkit-scrollbar-thumb { background: var(--black); }

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(242, 244, 246, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-line);
  transition: all 0.4s;
}
.header-blur {
  background: rgba(242, 244, 246, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-line);
}
.header-inner {
  max-width: 100%;
  padding: 0 var(--px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 88px;
}
.logo {
  font-family: var(--font-en);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--black);
}
.nav { display: flex; align-items: center; gap: 2.5rem; }
.nav a { font-family: var(--font-en); font-weight: 700; font-size: 0.9rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--black); position: relative; }
.nav a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--black); transition: width 0.3s; }
.nav a:hover::after { width: 100%; }

.nav-cta {
  background: var(--black);
  color: var(--white) !important;
  padding: 0.7rem 1.4rem;
  font-size: 0.8rem !important;
  letter-spacing: 0.04em !important;
  text-transform: none !important;
  font-family: var(--font-jp) !important;
  font-weight: 700 !important;
  white-space: nowrap;
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: #333; }

.hamburger { display: none; cursor: pointer; padding: 10px; }
.hamburger span { width: 24px; height: 2px; background: var(--black); margin: 6px 0; display: block; transition: 0.3s; }
.mobile-nav { display: none; position: fixed; inset: 0; background: var(--gray-bg); z-index: 999; flex-direction: column; align-items: center; justify-content: center; gap: 2rem; }
.mobile-nav.active { display: flex; }

/* ===== TYPOGRAPHY ===== */
.label-line {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}
.label-line::before { content: ''; width: 20px; height: 1px; background: var(--black); }

.heading-xl { font-size: clamp(2.8rem, 4vw, 4.5rem); font-weight: 700; line-height: 1.3; letter-spacing: -0.02em; color: var(--black); position: relative; z-index: 1; }
.heading-lg { font-size: clamp(2rem, 3vw, 3.2rem); font-weight: 700; line-height: 1.3; letter-spacing: -0.02em; color: var(--black); position: relative; z-index: 1; }
.heading-md { font-size: clamp(1.2rem, 2vw, 1.8rem); font-weight: 700; line-height: 1.4; color: var(--black); }
.heading-sm { font-size: 1.1rem; font-weight: 700; line-height: 1.5; color: var(--black); margin-bottom: 0.8rem; }

.body-text { font-size: 1rem; font-weight: 400; line-height: 2; color: var(--gray-text); margin-top: 1.5rem; position: relative; z-index: 1; }
.body-sm { font-size: 0.9rem; font-weight: 400; line-height: 1.9; color: var(--gray-text); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.9rem; font-weight: 700; padding: 1.2rem 3rem;
  border: 1px solid var(--black); cursor: pointer; transition: all 0.3s; min-width: 200px;
}
.btn-primary { background: var(--black); color: var(--white); }
.btn-primary:hover { background: var(--white); color: var(--black); }
.btn-outline { background: transparent; color: var(--black); }
.btn-outline:hover { background: var(--black); color: var(--white); }

.btn-link {
  font-weight: 700; color: var(--black); border-bottom: 1px solid var(--black);
  padding-bottom: 2px; display: inline-flex; align-items: center; gap: 5px;
}
.btn-link:hover { opacity: 0.7; gap: 10px; }
.btn-arrow { transition: 0.3s; }

.btn-circle-arrow {
  width: 60px; height: 60px; border-radius: 50%;
  background: var(--black); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; transition: transform 0.3s;
}
.btn-circle-arrow svg { width: 24px; height: 24px; stroke-width: 2; }

/* ===== SECTIONS ===== */
.section { padding: var(--section-y) var(--px); position: relative; }
.section-inner { max-width: var(--content-max); margin: 0 auto; position: relative; }

/* HERO */
.hero {
  min-height: 90vh; display: flex; align-items: center;
  border-bottom: 1px solid var(--gray-line); padding: 120px var(--px) 80px;
  position: relative; overflow: hidden;
}
.hero::after {
  content: ''; position: absolute; top: 10%; left: 20%; width: 60vw; height: 60vw;
  border: 1px solid rgba(0,0,0,0.1); border-radius: 50%; pointer-events: none;
}
.hero-content { max-width: 680px; position: relative; z-index: 2; }
.hero-actions { display: flex; gap: 1rem; margin-top: 3rem; }
.hero-img-side {
  position: absolute; top: 0; right: 0; bottom: 0; width: 40%;
  background: url('https://images.unsplash.com/photo-1497366216548-37526070297c?q=80&w=1200&auto=format&fit=crop') no-repeat center/cover;
  z-index: 1;
}

/* ABOUT */
.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: flex-start; }
.about-content { padding-top: 2rem; }
.about-btn-wrap { margin-top: 3rem; }

/* SERVICE LIST */
.service-list { display: flex; flex-direction: column; border-top: 1px solid var(--black); margin-top: 4rem; }
.service-row {
  display: grid; grid-template-columns: 100px 2.5fr 1.5fr 80px;
  gap: 2rem; padding: 3rem 0; border-bottom: 1px solid var(--gray-line);
  align-items: center; transition: background 0.3s; cursor: pointer;
}
.service-row:hover { background: rgba(255,255,255,0.5); }
.service-row:hover .btn-circle-arrow { transform: rotate(-45deg); }
.service-row:hover .service-icon { border-color: var(--black); background: var(--black); }
.service-row:hover .service-icon svg { stroke: var(--white); }

.service-icon {
  width: 72px; height: 72px;
  border: 1px solid var(--gray-line);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background .3s, border-color .3s;
}
.service-icon svg { width: 28px; height: 28px; stroke: var(--black); transition: stroke .3s; }

.service-info h3 { font-size: 1.8rem; font-weight: 700; margin-bottom: 1rem; }
.service-info p { font-size: 0.95rem; color: var(--gray-text); line-height: 1.8; }
.service-tags { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.s-tag { background: var(--gray-line); padding: 0.4rem 1rem; font-size: 0.8rem; font-weight: 600; border-radius: 100px; }
.service-tags-label {
  display: block; width: 100%; font-size: 0.75rem; font-weight: 700; margin-bottom: 0.5rem;
  position: relative; padding-left: 1.5rem;
}
.service-tags-label::before { content: ''; position: absolute; left: 0; top: 50%; width: 15px; height: 1px; background: var(--black); }
.service-circles-area {
  display: flex; justify-content: flex-end; position: relative; height: 400px;
  margin-bottom: -100px; z-index: 0;
}
.circle-group { position: relative; width: 400px; height: 400px; }
.c-item {
  position: absolute; width: 180px; height: 180px; border-radius: 50%;
  border: 1px solid var(--black); background: var(--gray-bg);
  display: flex; align-items: center; justify-content: center; text-align: center;
  font-family: var(--font-en); font-weight: 700; font-size: 1rem; line-height: 1.2;
}
.c-1 { top: 0; left: 50%; transform: translateX(-50%); z-index: 3; background: var(--white); }
.c-2 { bottom: 60px; left: 20px; z-index: 2; }
.c-3 { bottom: 60px; right: 20px; z-index: 2; background: rgba(0,0,0,0.05); }

/* STRENGTHS (Bento) */
.bento-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--gray-line); border: 1px solid var(--gray-line);
}
.bento-card {
  background: var(--white); padding: 3rem 2.5rem;
  display: flex; flex-direction: column; height: 100%;
}
.bento-card:hover { box-shadow: inset 0 0 0 1px var(--black); }
.graphic-area {
  height: 180px; width: 100%; background: transparent;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 2rem; overflow: visible;
}
.graphic-run { position: relative; width: 100px; height: 100px; }
.run-arrow {
  position: absolute; width: 50px; height: 50px;
  border-top: 2px solid var(--black); border-right: 2px solid var(--black);
  transform: rotate(45deg);
}
.run-arrow--client { top: 30px; left: 10px; opacity: 0.3; }
.run-arrow--i8 { top: 10px; left: 30px; }
.graphic-venn { position: relative; width: 140px; height: 100px; display: flex; align-items: center; justify-content: center; }
.circle { width: 80px; height: 80px; border-radius: 50%; position: absolute; border: 1px solid var(--black); background: transparent; }
.circle--left { left: 10px; }
.circle--right { right: 10px; }
.venn-text { position: relative; z-index: 2; font-family: var(--font-en); font-weight: 700; background: var(--black); color: var(--white); padding: 2px 8px; font-size: 0.7rem; }
.graphic-cycle { position: relative; width: 100px; height: 100px; display: flex; align-items: center; justify-content: center; }
.cycle-ring { width: 100%; height: 100%; border-radius: 50%; border: 1px dashed var(--black); animation: spin 30s linear infinite; }
.cycle-text { position: absolute; font-family: var(--font-jp); font-weight: 700; font-size: 0.9rem; background: var(--white); padding: 0.5rem; }
@keyframes spin { 100% { transform: rotate(360deg); } }

/* CASES */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.case-card { background: var(--white); border: 1px solid var(--gray-line); transition: opacity 0.3s; }
.case-card:hover { opacity: 0.7; }
.case-thumb { aspect-ratio: 16/9; position: relative; overflow: hidden; border-bottom: 1px solid var(--gray-line); }
.case-body { padding: 1.5rem; }
.case-tag { font-size: 0.75rem; font-weight: 700; border: 1px solid var(--black); padding: 2px 8px; display: inline-block; margin-bottom: 0.8rem; }
.case-card h3 { font-size: 1rem; font-weight: 700; line-height: 1.6; margin-bottom: 0.5rem; }

/* NEWS */
.news-list { border-top: 1px solid var(--black); }
.news-item { display: grid; grid-template-columns: 140px auto 1fr; gap: 0 1rem; border-bottom: 1px solid var(--gray-line); padding: 1.5rem 0; align-items: center; }
.news-item:hover { background: rgba(255,255,255,0.5); }
.news-date { font-family: var(--font-en); font-weight: 700; }
.news-cat { background: var(--black); color: var(--white); border: none; font-size: 0.75rem; padding: 4px 10px; text-align: center; }
.news-title { font-weight: 500; }

/* BLOG */
.blog-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.blog-card { background: var(--white); border: 1px solid var(--gray-line); transition: opacity 0.3s; }
.blog-card:hover { opacity: 0.7; }
.blog-thumb { aspect-ratio: 16/10; position: relative; overflow: hidden; border-bottom: 1px solid var(--gray-line); }
.blog-body { padding: 1.2rem; }
.blog-meta { display: flex; gap: 1rem; font-size: 0.8rem; color: var(--gray-text); margin-bottom: 0.5rem; font-family: var(--font-en); }
.blog-card h3 { font-size: 0.9rem; font-weight: 700; line-height: 1.6; }

/* RECRUIT & FOOTER */
.recruit-section { background: var(--gray-bg); }
.recruit-box {
  background: transparent;
  color: var(--black);
  padding: clamp(4rem, 8vw, 7rem) var(--px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  max-width: var(--content-max);
  margin: 0 auto;
}
.recruit-heading {
  color: var(--black);
  margin-bottom: 1.5rem;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -.02em;
}
.recruit-body { color: var(--gray-text); margin-bottom: 2rem; line-height: 2.2; font-size: .9rem; }
.btn-white { border-color: var(--white); color: var(--white); }
.btn-white:hover { background: var(--white); color: var(--black); }
.footer { background: #111; color: #fff; padding: 0; }
.footer-inner { max-width: var(--content-max); margin: 0 auto; }

/* フッター上部メイン */
.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 3rem;
  padding: clamp(3rem,6vw,5rem) var(--px);
  border-bottom: 1px solid rgba(255,255,255,.1);
}

/* ロゴ・説明カラム */
.footer-brand {}
.footer-logo-img {
  height: 36px;
  width: auto;
  display: block;
  object-fit: contain;
  margin-bottom: 1.4rem;
  filter: brightness(0) invert(1);
  opacity: .9;
}
.footer-brand-desc {
  font-family: var(--font-jp);
  font-size: .8rem;
  line-height: 2.0;
  color: rgba(255,255,255,.5);
  margin-bottom: 1.6rem;
}
.footer-contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-en);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: #fff;
  border: 1px solid rgba(255,255,255,.3);
  padding: 10px 20px;
  transition: background .25s, border-color .25s;
}
.footer-contact-btn:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.6); }

/* ナビカラム */
.footer-nav-col {}
.footer-nav-label {
  font-family: var(--font-en);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255,255,255,.35);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-nav-label::before { content:''; width:12px; height:1px; background:rgba(255,255,255,.25); }
.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: .7rem;
}
.footer-nav-list a {
  font-family: var(--font-jp);
  font-size: .82rem;
  font-weight: 500;
  color: rgba(255,255,255,.65);
  transition: color .2s;
  display: flex;
  align-items: center;
  gap: 6px;
}
.footer-nav-list a:hover { color: #fff; }
.footer-nav-list a::before { content:'—'; font-size:.6rem; color:rgba(255,255,255,.25); }

/* フッター下部 */
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.4rem var(--px);
  gap: 1rem;
}
.footer-copy {
  font-family: var(--font-en);
  font-size: .72rem;
  color: rgba(255,255,255,.3);
  letter-spacing: .06em;
}
.footer-bottom-links {
  display: flex;
  gap: 1.8rem;
}
.footer-bottom-links a {
  font-family: var(--font-en);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.35);
  transition: color .2s;
}
.footer-bottom-links a:hover { color: rgba(255,255,255,.8); }

@media(max-width:1024px){
  .footer-main { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
}
@media(max-width:768px){
  .footer-main { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: .8rem; }
}

@media (max-width: 1024px) {
  .about-layout { grid-template-columns: 1fr; }
  .service-row { grid-template-columns: 1fr; gap: 1.5rem; position: relative; }
  .service-icon { display: none; }
  .service-row-arrow { position: absolute; top: 2rem; right: 0; }
  .service-circles-area { display: none; }
  .bento-grid, .cases-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr 1fr; }
  .recruit-box { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-img-side { display: none; }
}
@media (max-width: 768px) {
  .nav { display: none; }
  .hamburger { display: block; }
  .news-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .blog-grid { grid-template-columns: 1fr; }
}
.reveal { opacity: 0; transform: translateY(20px); transition: all 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d2 { transition-delay: 0.2s; }
/* ===== Logo Image ===== */
.logo-img {
  height: 48px;
  width: auto;
  display: block;
  object-fit: contain;
}
.logo-img--footer {
  height: 36px;
  opacity: 0.85;
}
.logo-img--footer:hover {
  opacity: 1;
}

/* ===== Nav Dropdown ===== */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.nav-caret {
  font-size: 0.65rem;
  transition: transform 0.3s;
  display: inline-block;
}

.nav-dropdown:hover .nav-caret {
  transform: rotate(180deg);
}

/* ホバー領域を広げるための透明な橋渡し */
.nav-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: -20px;
  right: -20px;
  height: 20px;
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 20px);
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--white);
  border: 1px solid var(--gray-line);
  min-width: 200px;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-menu a {
  font-family: var(--font-jp);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--black);
  padding: 14px 20px;
  border-bottom: 1px solid var(--gray-bg);
  letter-spacing: 0;
  text-transform: none;
  display: block;
}
.nav-dropdown-menu a:last-child { border-bottom: none; }
.nav-dropdown-menu a::after { display: none; }
.nav-dropdown-menu a:hover {
  background: var(--gray-bg);
  color: var(--black);
}