/* ========================================
   Navigation CSS - 統合されたナビゲーションスタイル
   ======================================== */

/* ========================================
   Header Styles
   ======================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-sticky);
  background-color: #222222;
  transform: translateY(0);
  transition: transform var(--transition-slow), padding var(--transition-base);
  border-bottom: 1px solid var(--color-black);
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

.site-header.is-scrolled {
  padding: var(--spacing-lg);
  background-color: transparent;
  border-bottom: none;
  opacity: 0.8;
  transition: opacity var(--transition-base);
}

.site-header.is-scrolled .header-main {
  padding: calc(var(--spacing-md) * 0.5) 0;
  border-radius: var(--spacing-md);
  background-color: #222222;
}

.site-header.is-scrolled .logo-img {
  height: 20px;
}

/* Header Main */
.header-main {
  background-color: rgba(34, 34, 34, 0.6);
  padding: var(--spacing-sm) 0;
  transition: all var(--transition-base);
  border-radius: 0;
}

.header-main-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo img {
  height: 32px;
  width: auto;
  display: block;
}

/* Logo */
.header-logo {
  flex-shrink: 0;
}

.logo-img {
  height: 32px;
  width: auto;
  transition: height var(--transition-base);
  display: block;
  fill: #ffffff;
  color: #ffffff;
}

/* Navigation */
.main-nav {
  flex-grow: 1;
  display: flex;
  justify-content: flex-end;
}

/* Mobile Navigation - Hidden by default on desktop */
.main-nav.mobile-nav {
  display: none;
}

/* Desktop Navigation */
@media screen and (min-width: 769px) {
  .site-header .desktop-nav {
    display: flex;
  }
  
  .site-header .mobile-nav,
  .main-nav.mobile-nav,
  .mobile-nav {
    display: none !important;
  }
  /* PC: hoverでサブメニューを表示 */
  .has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  /* PC: サブメニューの背景を不透明に */
  .dropdown-menu {
    background-color: rgba(34, 34, 34, 0.95);
    backdrop-filter: blur(8px);
    border: 1px solid var(--color-black);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    padding: var(--spacing-xs) 0;
    text-align: left !important;
    min-width: max-content;
    width: max-content;
  }
  .dropdown-menu a {
    color: var(--color-white);
    text-align: left !important;
    white-space: nowrap;
  }
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  list-style: none;
  margin: 0;
  padding: 0;
  text-align: left !important;
}

.nav-item {
  position: relative;
  background: none;
  text-align: left !important;
}

.nav-item-social {
  display: none;
}

.nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  text-decoration: none;
  transition: opacity var(--transition-fast), transform var(--transition-base), text-shadow var(--transition-base);
  cursor: pointer;
  text-align: left !important;
}

  .nav-link.is-active {
    opacity: 1;
  }

/* PC版: ホバー時のモーション（文字に光彩 + 上に移動） */
@media screen and (min-width: 769px) {
  .nav-link:hover {
    transform: translateY(-2px);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.8), 0 0 20px rgba(255, 255, 255, 0.5), 0 0 30px rgba(255, 255, 255, 0.3);
  }
  
  .dropdown-menu a:hover {
    transform: translateY(-2px);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.8), 0 0 20px rgba(255, 255, 255, 0.5), 0 0 30px rgba(255, 255, 255, 0.3);
  }

  /* Desktop header: tighter nav gap & font (desktop-nav only; not mobile overlay) */
  .site-header .desktop-nav .nav-list {
    gap: var(--spacing-md);
  }

  .site-header .desktop-nav .nav-link {
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-sm);
  }
}

/* Dropdown Toggle Icon */
.dropdown-toggle-icon {
  display: inline-block;
  width: 20px;
  height: 20px;
  text-align: center;
  line-height: 20px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  transition: transform var(--transition-base);
  margin-left: var(--spacing-sm);
}

/* Hide toggle icon on desktop and mobile */
@media (min-width: 769px) {
  .dropdown-toggle-icon {
    display: none;
  }
}

@media (max-width: 768px) {
  .dropdown-toggle-icon {
    display: none;
  }
}

/* Dropdown */
.has-dropdown {
  position: relative;
}

@media (min-width: 769px) {
  .has-dropdown.is-active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: max-content;
  width: max-content;
  background-color: rgba(34, 34, 34, 0.95);
  backdrop-filter: blur(8px);
  border: none;
  border-radius: var(--spacing-sm);
  list-style: none;
  margin: 0;
  padding: var(--spacing-xs) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  text-align: left !important;
}

.dropdown-menu li {
  margin: 0;
  text-align: left !important;
}

.dropdown-menu a {
  display: block;
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-white);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast), transform var(--transition-base), text-shadow var(--transition-base);
  text-align: left !important;
  white-space: nowrap;
}

.dropdown-menu a.is-active {
  background-color: transparent;
  color: var(--color-white);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  position: relative;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}


.hamburger-line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-white);
  border-radius: var(--radius-sm);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

.hamburger-line:nth-child(1) {
  top: 0;
}

.hamburger-line:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.hamburger-line:nth-child(3) {
  bottom: 0;
}

/* Animation */
.mobile-menu-toggle.is-active .hamburger-line:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.mobile-menu-toggle.is-active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: translateY(-50%) scaleX(0);
}

.mobile-menu-toggle.is-active .hamburger-line:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* Header Image for Mobile Only */
.header-image {
  display: none;
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  margin-top: 0;
  position: relative;
  z-index: 1;
}

/* Header Carousel Indicators */
.header-carousel-indicators {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: none;
  gap: 10px;
  z-index: 10;
}

.header-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  background-color: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
}

.header-indicator.is-active {
  background-color: #ffffff;
  border-color: #ffffff;
}



/* ========================================
   Sidebar Styles
   ======================================== */

.sidebar {
  position: fixed;
  top: 0;
  left: -100%;
  width: 300px;
  height: 100vh;
  background-color: #222222;
  transition: left 0.3s ease;
  z-index: 1000;
  overflow-y: auto;
}

.sidebar.is-active {
  left: 0;
}

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo img {
  height: 40px;
  width: auto;
  display: block;
  fill: #ffffff;
  color: #ffffff;
}

.sidebar-nav {
  padding: var(--spacing-lg);
}

.sidebar-menu {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar-menu-item {
  margin-bottom: var(--spacing-sm);
}

.sidebar-menu-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  color: var(--color-white);
  text-decoration: none;
  border-radius: var(--spacing-sm);
}


.sidebar-menu-icon {
  font-size: var(--font-size-lg);
  color: var(--color-black);
}

.sidebar-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-footer-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  color: var(--color-white);
  text-decoration: none;
  border-radius: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}


.sidebar-footer-icon {
  font-size: var(--font-size-base);
}

.sidebar-toggle {
  position: fixed;
  top: var(--spacing-lg);
  left: var(--spacing-lg);
  z-index: 1001;
  background-color: #222222;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: var(--spacing-sm);
  border-radius: var(--spacing-sm);
  cursor: pointer;
  transition: all var(--transition-base);
}


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

/* Mobile Header - ロゴを左に配置 */
@media screen and (max-width: 768px) {
  .header-main-wrapper {
    position: relative;
    min-height: 60px;
    justify-content: flex-start;
  }
  
  .header-logo {
    flex: 0 0 auto;
  }
  
  body.menu-open {
    padding-top: 0;
  }

  /* スマホ: ヘッダー内の PC 用ナビは使わず、専用の mobile-nav のみ表示 */
  .site-header .main-nav.desktop-nav {
    display: none !important;
  }

  .main-nav.mobile-nav {
    display: none;
    position: fixed;
    top: 120px;
    left: 25px;
    right: 25px;
    width: calc(100vw - 50px);
    height: calc(100vh - 120px);
    background-color: #1f1f1f;
    /* backdrop-filter はサブリンク付近で帯状に見える描画の原因になりやすいためオフ */
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    padding: 0;
    z-index: 9999;
    overflow-y: auto;
    box-sizing: border-box;
    margin: 0;
    max-width: none;
    min-width: calc(100vw - 50px);
    transform: translateX(100%);
    transition: transform 0.6s ease-in-out;
    border-radius: 20px 20px 0 0;
  }
  
  .mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    /* 半透明だとスクロール時に直下のリンク境界がグラデーション状に見える */
    background-color: #222222;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: 10000;
  }
  
  .mobile-menu-logo img {
    height: 40px;
    width: auto;
  }
  
  .mobile-menu-close {
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
  }
  
  .close-line {
    width: 24px;
    height: 2px;
    background-color: var(--color-white);
    transform-origin: center;
    transition: transform 0.3s ease;
  }
  
  .close-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
  }
  
  .close-line:nth-child(2) {
    transform: rotate(-45deg) translate(3px, -3px);
  }
  
  .main-nav.mobile-nav.is-active {
    display: block;
    transform: translateX(0);
  }

  .site-header .mobile-menu-toggle {
    display: block;
    visibility: visible;
    opacity: 1;
    position: relative;
    z-index: 100;
    margin-left: auto;
  }
  
  .main-nav.mobile-nav .nav-list {
    padding: var(--spacing-md);
    margin: 0;
    width: 100%;
    box-sizing: border-box;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .main-nav.mobile-nav .nav-item {
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    background: none;
    margin-top: -1px;
  }

  .main-nav.mobile-nav .nav-link {
    padding: var(--spacing-md) 0;
    width: 100%;
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    line-height: 1.3;
    letter-spacing: 0.5px;
    transition: all var(--transition-base);
    cursor: pointer;
    text-decoration: none;
  }

  .main-nav.mobile-nav .nav-link.is-active {
    color: var(--color-white);
    padding-left: 0;
  }

  .main-nav.mobile-nav .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background-color: transparent;
    padding: 0;
    margin-top: 0;
    max-height: none;
    overflow: visible;
    border-radius: 0;
  }

  .main-nav.mobile-nav .dropdown-menu a {
    color: #ffffff;
    padding: 12px var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1.3;
    border: 0;
    background-color: transparent;
    background-image: none;
    -webkit-tap-highlight-color: transparent;
    /* ベースの transition:all + text-shadow が背景っぽく見えることがあるため限定 */
    transition: color var(--transition-fast), padding-left var(--transition-fast);
    text-shadow: none;
  }

  .main-nav.mobile-nav .dropdown-menu a.is-active {
    background-color: transparent;
    color: var(--color-white);
    padding-left: var(--spacing-lg);
  }

  .mobile-nav .nav-link:focus,
  .mobile-nav .nav-link:focus-visible,
  .mobile-nav .dropdown-menu a:focus,
  .mobile-nav .dropdown-menu a:focus-visible {
    outline: none;
    box-shadow: none;
  }
  
  .main-nav.mobile-nav .nav-item-social {
    display: block;
    border-bottom: none;
    padding: var(--spacing-lg) 0 0;
  }

  .main-nav.mobile-nav .nav-social-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .main-nav.mobile-nav .nav-social-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm) 0 var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    width: 100%;
  }

  .main-nav.mobile-nav .nav-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
  }

  .main-nav.mobile-nav .nav-social-link:hover {
    border-color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.1);
  }

  .main-nav.mobile-nav .nav-social-link img {
    width: 18px;
    height: 18px;
    display: block;
  }

  /* 各項目の間に横罫線 */
  .main-nav.mobile-nav .dropdown-menu li + li {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }
  
  
  body.menu-open {
    overflow: hidden;
  }
  
  body.menu-open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 998;
    opacity: 0;
    animation: fadeIn 0.3s ease-out forwards;
  }
}

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

@media (max-width: 768px) {
  .header-image {
    display: block;
    margin-top: -20px;
  }
  
  .footer-bottom-wrapper {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .footer-company-block {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .page-top-btn {
    justify-self: center;
    margin-top: calc(var(--spacing-lg) - 30px);
    width: 100%;
    max-width: 400px;
    height: 40px;
    flex-direction: row;
    padding: var(--spacing-xs) var(--spacing-sm);
    gap: var(--spacing-xs);
  }
  
  .page-top-btn .page-top-line {
    display: none;
  }
  
  .page-top-btn .page-top-arrow {
    display: none;
  }
  
  .page-top-btn .page-top-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.05em;
    line-height: 1;
    margin: 0;
  }
  
  .sidebar {
    width: 100%;
  }
  
  .sidebar-toggle {
    display: block;
  }
}

@media (min-width: 769px) {
  .site-header .header-image {
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
    object-fit: contain;
    object-position: center;
  }
  
  .sidebar-toggle {
    display: none;
  }
}

@media (max-width: 576px) {
  .logo-img {
    height: 32px;
  }
  
  .site-header.is-scrolled .logo-img {
    height: 24px;
  }
  
  .main-nav.mobile-nav {
    width: 90%;
  }

  .main-nav.mobile-nav .nav-link {
    font-size: var(--font-size-sm);
  }
}