:root {
  --bg: #ffffff;
  --text-main: #111111;
  --text-sub: #666666;
  --accent: #000000;
  --line: #e5e5e5;
  --bg-off: #f9f9f9;
}

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

html {
  scroll-behavior: smooth;
}

/* fixed header offset for anchor links */
section[id] {
  scroll-margin-top: 110px;
}

body {
  background: var(--bg);
  color: var(--text-main);
  font-family: 'Inter', "Yu Mincho", "YuMincho", serif;
  /* 本文は少し明朝混ぜてもお洒落 */
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s;
}

a:hover {
  opacity: 0.6;
}

/* Typography */
.font-serif {
  font-family: 'Cormorant Garamond', serif;
}

.font-oswald {
  font-family: 'Oswald', sans-serif;
}

.text-en {
  font-family: 'Oswald', sans-serif;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.text-vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.section-padding {
  padding: 120px 0;
}

/* Background Text (Parallax like) */
.bg-text {
  position: absolute;
  font-family: 'Oswald', sans-serif;
  font-weight: 700;
  color: #f2f2f2;
  z-index: -1;
  line-height: 1;
  white-space: nowrap;
  pointer-events: none;
}

/* Page Visual */
.page-visual {
  width: 100%;
  height: 400px;
  background-color: #e0e0e0;
  margin-top: 80px; /* offset for fixed header */
  margin-bottom: 60px;
  overflow: hidden;
  position: relative;
}
.page-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-visual-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-family: 'Oswald', sans-serif;
  font-size: 48px;
  letter-spacing: 0.1em;
  text-shadow: 0 4px 8px rgba(0,0,0,0.3);
  width: 100%;
  text-align: center;
  margin: 0; /* 追加：念のため */
  display: flex; /* 追加：中央寄せ強化 */
  justify-content: center; /* 追加：中央寄せ強化 */
  align-items: center; /* 追加：中央寄せ強化 */
}

@media (max-width: 768px) {
  .page-visual {
    height: 250px;
    margin-top: 70px; /* Mobile header height adjustment */
  }
  .page-visual-text {
    font-size: 32px;
  }
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 24px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
}

.logo img {
  height: 24px;
  width: auto;
}

.header-nav {
  display: flex;
  gap: 32px;
  font-size: 13px;
  letter-spacing: 0.1em;
  font-weight: 500;
}

/* News Section CSS (Simulation) */
.news-list {
  max-width: 800px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.news-item {
  display: flex;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  transition: background 0.2s;
}

.news-item:hover {
  background: #fafafa;
}

.news-date {
  font-family: 'Oswald', sans-serif;
  width: 100px;
  color: var(--text-sub);
  font-size: 13px;
}

.news-title {
  flex: 1;
  font-weight: 500;
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 18vw;
  color: #f4f4f4;
  font-family: 'Cormorant Garamond', serif;
  white-space: nowrap;
  z-index: -1;
  letter-spacing: -0.05em;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-visual {
  width: 80vw;
  max-width: 900px;
  height: 60vh;
  background: #e0e0e0 url('../images/hero_main.png') no-repeat center center/cover;
  margin: 0 auto 40px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

.hero-copy h1 {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(40px, 6vw, 80px);
  line-height: 1;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}

.hero-copy p {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 18px;
  color: var(--text-sub);
}

/* Concept Section */
.concept {
  position: relative;
}

.concept .bg-text {
  font-size: 15vw;
  top: 0;
  right: -5vw;
  color: #f7f7f7;
}

.zigzag-row {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 100px;
}

.zigzag-row:nth-child(even) {
  flex-direction: row-reverse;
}

.zigzag-img {
  flex: 1;
  height: 500px;
  background: #eee;
  overflow: hidden;
  position: relative;
}

.zigzag-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.zigzag-img:hover img {
  transform: scale(1.05);
}

.zigzag-text {
  flex: 1;
  padding: 0 40px;
}

.zigzag-text h2 {
  font-family: 'Oswald', sans-serif;
  font-size: 48px;
  margin-bottom: 24px;
  line-height: 1;
}

.zigzag-text h2 span {
  display: block;
  font-family: 'Cormorant Garamond', serif;
  font-size: 20px;
  font-style: italic;
  color: var(--text-sub);
  margin-bottom: 8px;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.zigzag-text p {
  line-height: 2;
  color: var(--text-sub);
  margin-bottom: 32px;
  font-size: 15px;
}

.zigzag-text .btn-link {
  display: inline-block;
  border-bottom: 1px solid #000;
  padding-bottom: 4px;
  font-size: 14px;
  letter-spacing: 0.1em;
}

/* Drops (Grid Layout) */
.drops {
  background: var(--bg-off);
}

.section-head {
  text-align: center;
  margin-bottom: 80px;
}

.section-head h2 {
  font-size: 40px;
  font-family: 'Oswald', sans-serif;
  letter-spacing: 0.05em;
}

.drop-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.drop-item {
  position: relative;
}

.drop-img {
  aspect-ratio: 3/4;
  background: #ddd;
  margin-bottom: 16px;
  overflow: hidden;
}

.drop-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%);
  transition: filter 0.3s, transform 0.5s;
}

.drop-item:hover .drop-img img {
  filter: grayscale(0%);
  transform: scale(1.03);
}

.drop-info h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.drop-info p {
  font-size: 13px;
  color: var(--text-sub);
}

/* Footer */
.site-footer {
  background: #000;
  color: #fff;
  padding: 40px 24px 100px;
  text-align: center;
  font-size: 12px;
  border: none;
  border-bottom: none;
  border-top: none;
  margin: 0;
}

/* Fixed Footer Nav */
.fixed-footer-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #000;
  color: #fff;
  padding: 16px 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  gap: 0;
  border: none;
  border-top: none;
  margin: 0;
}

.nav-item {
  flex: 1;
  text-align: center;
  border-right: none;
  border-left: none;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 40px;
  cursor: pointer;
  transition: background 0.2s;
}

.nav-item:hover {
  background: #222;
}

.nav-item span {
  display: block;
  font-size: 10px;
  color: #888;
  margin-top: 4px;
}

/* Scroll Animation */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 確実にモバイルメニューを隠す（CSSが効いてない場合の対策含む） */
.mobile-menu-overlay {
  position: fixed; /* headerの外に出しても効くようにfixedに */
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #fff;
  z-index: 9999; /* 最前面 */
  display: flex !important;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.mobile-menu-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu-overlay:not(.is-open) {
  display: none !important;
}

.mobile-menu-overlay a {
  font-family: 'Oswald', sans-serif;
  font-size: 24px;
  margin: 20px 0;
  color: #111;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Mobile Menu */
.menu-trigger {
  cursor: pointer;
  z-index: 201; /* header内での優先度 */
  position: relative;
  display: none; /* デフォルトは非表示 */
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1;
  height: 24px; /* ロゴ高さと揃える */
  align-items: center;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 60px 0;
  }

  .hero {
    min-height: 500px; /* モバイルでは少し高さを抑える */
  }

  .header-nav {
    display: none;
  }
  .menu-trigger {
    display: flex; /* モバイルで表示（縦位置ズレ防止） */
  }
  
  .container {
    padding: 0 20px; /* 左右の余白を少し詰める */
  }

  .hero-content {
    padding: 0 20px;
    width: 100%;
  }

  header {
    padding: 16px 20px;
  }

  .zigzag-text,
  .section-head p,
  #about div,
  #contact div {
    padding-left: 0;
    padding-right: 0;
  }

  .hero-bg-text {
    font-size: 15vw; /* 背景文字サイズを調整 */
  }

  .zigzag-row {
    flex-direction: column !important;
    gap: 32px;
    margin-bottom: 60px;
  }

  .zigzag-img {
    height: 250px;
  }

  .zigzag-text {
    padding: 0;
  }
  
  .zigzag-text h2 {
    font-size: 32px;
    margin-bottom: 16px;
  }
  
  .zigzag-text p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 24px;
  }

  .drop-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-copy h1 {
    font-size: 36px;
    margin-bottom: 16px;
  }
  
  .hero-copy p {
    font-size: 15px;
  }
}

/* Form Styles */
.form-group {
  margin-bottom: 24px;
}
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-main);
}
.form-control {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: #fafafa;
  font-family: inherit;
  font-size: 15px;
  border-radius: 4px;
  transition: border-color 0.3s, background 0.3s;
}
.form-control:focus {
  outline: none;
  border-color: #000;
  background: #fff;
}
textarea.form-control {
  resize: vertical;
  min-height: 150px;
}
.checkbox-group {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-sub);
}
.submit-btn {
  display: inline-block;
  background: #000;
  color: #fff;
  border: none;
  padding: 16px 48px;
  font-size: 14px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: opacity 0.3s;
  border-radius: 0; /* Square/Sharp look */
}
.submit-btn:hover {
  opacity: 0.8;
}
.form-required {
  color: #d32f2f;
  margin-left: 4px;
  font-size: 12px;
}

/* About Page New Layout */
.about-section {
  display: flex;
  margin-bottom: 100px;
  gap: 60px;
  align-items: flex-start;
  border-top: 1px solid #eee;
  padding-top: 60px;
  padding-left: 40px;
  padding-right: 40px;
}
.about-label {
  flex: 0 0 200px;
  font-family: 'Oswald', sans-serif;
  font-size: 18px;
  letter-spacing: 0.05em;
  color: #111;
  font-weight: 600;
  position: sticky;
  top: 120px; /* Sticky label */
}
.about-content {
  flex: 1;
}
.about-content h3 {
  font-size: 24px;
  margin-bottom: 32px;
  line-height: 1.5;
  font-feature-settings: "palt";
  font-weight: 600;
}
.about-content p {
  margin-bottom: 24px;
  color: var(--text-main);
  line-height: 2.2;
}
.logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.logo-item {
  background: #f9f9f9;
  padding: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  aspect-ratio: 1 / 1; /* 正方形に統一 */
  border: 1px solid #eee;
}
.logo-item img {
  max-width: 70%; /* 画像を少し小さく */
  max-height: 70%; /* 画像を少し小さく */
  height: auto;
  object-fit: contain;
}

@media (max-width: 768px) {
  .about-section {
    flex-direction: column;
    gap: 30px;
    margin-bottom: 80px;
    padding-top: 40px;
    padding-left: 0;
    padding-right: 0;
  }
  .about-label {
    flex: none;
    width: 100%;
    position: static; /* No sticky on mobile */
    border-bottom: 1px solid #eee;
    padding-bottom: 12px;
    margin-bottom: 0;
    font-size: 16px;
  }
  .about-content h3 {
    font-size: 20px;
    margin-bottom: 24px;
  }
  .logo-grid {
    grid-template-columns: 1fr 1fr; /* Keep 2 cols on mobile or 1? 2 is usually fine for logos */
    gap: 12px;
  }
  .logo-item {
    padding: 16px;
  }
  .logo-item img {
    max-width: 65%; /* スマホでも少し小さく */
    max-height: 65%;
  }
}