/* =========================================
   Font Import
========================================= */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;600&family=Cormorant+Garamond:wght@400;500;600&display=swap');

/* =========================================
   Base
========================================= */
body {
  font-family: "Noto Serif JP", "Cormorant Garamond", serif;
  background-color: #fff;
  color: #111;
  margin: 0;
  padding: 0;
  overflow-x: hidden; /* 横スクロール防止 */
}

/* =========================================
   Header
========================================= */
header {
  background-color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 3rem;
  position: relative;
  z-index: 1000;
}

/* ロゴ */
header .logo a {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2rem;
  font-weight: 600;
  color: #333;
  text-decoration: none;
  letter-spacing: 0.05em;
}

/* ナビ（共通） */
header nav a {
  color: #333;
  text-decoration: none;
  font-family: 'Cormorant Garamond', serif;
  font-weight: 500;
  font-size: 1.3rem;
  letter-spacing: 0.03em;
  margin-left: 2.5rem;
  transition: color 0.3s ease;
  position: relative;
}

/* 下線アニメーション */
header nav a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #333;
  transition: width 0.3s ease;
}
header nav a:hover::after {
  width: 100%;
}

/* =========================================
   Main Visual
========================================= */
.main-visual {
  position: relative;
  width: 90%;
  max-width: 1200px;
  margin: 6rem auto 3rem auto;
  border-radius: 0.6rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
  overflow: hidden;
  aspect-ratio: 3 / 2;
}

.main-visual .slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.main-visual .slide.active {
  opacity: 1;
  z-index: 2;
}

/* 横写真：デフォルトで表示 */
.slide.horizontal {
  display: block;
}

/* 縦写真：デフォルト非表示 */
.slide.vertical {
  display: none;
}

/* --- スマホでは縦写真のみ有効 --- */
@media (max-width: 768px) {
  .slide.horizontal {
    display: none;
    margin: 0.5rem auto; /* ← 上下の空白を控えめに（3rem → 1.5rem） */
    height: auto;
  }

  .slide.vertical {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    height: 100vh;
    width: auto;
    max-width: 120%;
    transform: translate(-50%, -50%);
    object-fit: contain;
    border-radius: 0.5rem;
  }

  .main-visual {
    aspect-ratio: auto;
    margin: 0 auto;
    width: 80%;
    height: 70vh;
    margin: 1.5rem auto;
    overflow: hidden;
    position: relative;
  }
}





/* =========================================
   Footer
========================================= */
footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  color: #444;
}

/* =========================================
   Hamburger Icon
========================================= */
.hamburger {
  position: relative;
  width: 30px;
  height: 22px;
  cursor: pointer;
  z-index: 2001;
  transition: all 0.3s ease;
  display: none; /* PCでは非表示 */
}

.hamburger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 3px;
  background: #333;
  border-radius: 3px;
  transition: all 0.4s ease;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 9px; }
.hamburger span:nth-child(3) { bottom: 0; }

/* ☰→× */
.hamburger.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* =========================================
   Fullscreen Menu (mobile)
========================================= */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(255, 255, 255, 0.98);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
  z-index: 2000;
}

nav.active {
  opacity: 1;
  pointer-events: auto;
}

nav a {
  font-family: 'Cormorant Garamond', serif;
  color: #333;
  font-size: 2rem;
  text-decoration: none;
  margin: 1rem 0;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s ease;
}

nav.active a {
  opacity: 1;
  transform: translateY(0);
}

nav.active a:nth-child(1) { transition-delay: 0.2s; }
nav.active a:nth-child(2) { transition-delay: 0.3s; }
nav.active a:nth-child(3) { transition-delay: 0.4s; }
nav.active a:nth-child(4) { transition-delay: 0.5s; }

/* =========================================
   Responsive
========================================= */

/* ▼スマホ・タブレット（1024px以下） */
@media screen and (max-width: 1024px) {
  .hamburger {
    display: block;
  }

  nav {
    display: flex;
  }

  header nav a {
    margin-left: 0;
  }
}

/* ▼PC（1025px以上） */
@media screen and (min-width: 1025px) {
  .hamburger {
    display: none;
  }

  nav {
    position: static;
    width: auto;
    height: auto;
    background: none;
    opacity: 1;
    pointer-events: auto;
    display: flex;
    flex-direction: row;
    justify-content: flex-end;
    align-items: center;
    transition: none;
  }

  nav a {
    opacity: 1 !important;
    transform: none !important;
    font-size: 1.3rem;
    margin: 0 1.5rem;
    transition: color 0.3s ease;
  }

  nav a:hover {
    color: #555;
  }
}

/*ギャラリーページ*/

/* =========================================
   Gallery Page
========================================= */
.gallery-page {
  width: 90%;
  max-width: 1200px;
  margin: 5rem auto;
  text-align: center;
}

.gallery-page h1 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.2rem;
  font-weight: 600;
  margin-bottom: 2.5rem;
  color: #333;
  letter-spacing: 0.05em;
}

.masonry {
  column-count: 3;
  column-gap: 1rem;
}

.masonry img {
  width: 100%;
  display: block;
  margin-bottom: 1rem;
  border-radius: 0.4rem;
  cursor: pointer;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.masonry img:hover {
  transform: scale(1.02);
  opacity: 0.9;
}

/* ライトボックス */
.lightbox {
  display: none;
  position: fixed;
  z-index: 3000;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 10, 0.9);
  justify-content: center;
  align-items: center;
}

.lightbox img {
  max-width: 90%;
  max-height: 85%;
  border-radius: 0.5rem;
}

.lightbox .close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  font-size: 2.5rem;
  color: #fff;
  cursor: pointer;
}

/* Responsive */
@media (max-width: 900px) {
  .masonry {
    column-count: 2;
  }
}

@media (max-width: 600px) {
  .masonry {
    column-count: 1;
  }
}



/* ===============================
   ローディングアニメーション
=============================== */
#loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 3000;
  transition: transform 1s ease, opacity 0.6s ease;
}

/* 上にスライドして消える */
#loader.hide {
  transform: translateY(-100%);
  opacity: 0;
}

/* テキスト or ロゴ */
.loader-content {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.8rem;
  color: #333;
  letter-spacing: 0.1em;
  animation: fadeInOut 2s infinite ease-in-out;
}

@keyframes fadeInOut {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 1; }
}