/*==================================
 Header
==================================*/
:root {
  --header-padding-base: 20px;
  --header-logo-height-base: 70px;
  --header-utility-gap-base: 30px;
  --header-social-gap-base: 30px;
  --nav-list-gap-base: 150px;
  --header-nav-margin-top-base: 30px;

  --color-mobile-overray: rgba(0, 0, 0, 0.5);

  --font-size-header: clamp(0.7rem, 1vw, 1.1rem);
}

.header {
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  width: 100%;
  z-index: 1000;
  background-color: var(--color-background);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out, background-color 0.3s ease-in-out;
}

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

.header.is-stuck {
  position: fixed;
  top: 0;
  left: 0;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  background-color: var(--color-background);
}

.header-inner {
  display: flex;
  background-color: var(--color-background);
  justify-content: space-between;
  align-items: center;
  max-width: 100%;
  padding: 0 clamp(15px, 2vw, var(--header-padding-base));
  box-sizing: border-box;
}

.header-logo{
  height: clamp(35px, 5.5vw, var(--header-logo-height-base));
  width: auto;
  margin-left: clamp(5px, 1vw, 15px);
}

.header-logo img {
  height: 100%;
  width: auto;
  box-sizing: border-box;
}

.header-utility {
  display: flex;
  justify-content:  flex-end;
  gap: clamp(15px, 3vw, var(--header-utility-gap-base));
  width: clamp(50px, 18vw, 350px);
}

.header-search-form {
  display: flex;
  align-items: center;
  flex-grow: 1; 
  flex-shrink: 1;
  flex-basis: auto; 
  max-width: clamp(100px, 15vw, 350px); 
  gap: 5px;
}

.header-search-form input[type="search"] {
  border: 1px solid #ccc;
  border-radius: 5px;
  width: 100%;
  padding: 5px 10px;
  font-size: var(--font-size-caption)
}

.header-search-button {
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0; 
}

.header-search-button img {
  height: clamp(10px, 2.5vw, 25px);
  width: auto;
}

.social-links {
  display: flex;
  gap: clamp(15px, 3vw, var(--header-social-gap-base));
  margin-right: clamp(0px, 1vw, 5px);
}

.social-icon img {
  height: clamp(20px, 2.5vw, 30px);
}

.header-nav {
  width: 100%;
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  margin-top: clamp(10px, 5vw, var(--header-nav-margin-top-base));
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  width: 90%;
  height: 100%;
  box-sizing: border-box;
  justify-content: space-around;
}

.nav-item {
  position: relative;
  padding: 0 clamp(5px, 2vw, 40px) clamp(10px, 2vw, 20px);
  font-size: var(--font-size-header);
  white-space: nowrap;
}

.nav-item.has-dropdown {
  cursor: pointer; 
}

.nav-item a,
.dropdown-toggle {
  text-decoration: none;
  color: var(--color-body-text);
  font-weight: bold;
  display: block;
}

.nav-item:hover > a,
.nav-item:hover > .dropdown-toggle,
.nav-item.is-active > a,
.nav-item.is-active > .dropdown-toggle {
  color: var(--color-link-text);
}

.nav-item.is-active .bottom_arrow_icon {
  filter: invert(1);
  transform: rotate(180deg);
  transition: transform 0.3s ease;
}

.nav-item > a,
.nav-item > .dropdown-toggle {
  text-decoration: none;
  color: var(--color-body-text);
  font-weight: bold;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.bottom_arrow_icon {
  width: 10px;
  height: auto;
  margin-top: 10px;
  transition: transform 0.3s ease;
}

/*==================================
 Dropdown Menu (2-column layout - Product Mega Menu)
==================================*/
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background-color: var(--color-background);
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.8);
  visibility: hidden;
  opacity: 0;
  transform: translateY(-20px);
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.5s ease;
  max-height: 80vh;
  overflow-y: auto;
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: clamp(15px, 2vw, 25px) 10%;
}

.dropdown-menu.is-visible {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* 2分割レイアウト */
#product-dropdown .dropdown-list-container {
  width: 10%; /* 左側: カテゴリーリスト */
  flex: 1;
}

.sub-dropdown-list-container {
  width: 90%; /* 右側: 製品画像グリッド */
  padding-right: 0;
  padding-left: clamp(15px, 2vw, 25px);
  flex: 2.5; /* 幅を広めに取る */
}

.dropdown-border {
  /* 左側のコンテナに適用し、右側との区切り線にする */
  border-right: 1px solid var(--color-accent-3);
}

/* 製品画像グリッドのスタイル */
.product-grid-view {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(clamp(60px, 10vw, 150px), 1fr)); /* 最小120pxで自動調整 */
  gap: clamp(15px, 3vw, 25px);
  width: 100%;
  box-sizing: border-box;
}

.grid-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  text-decoration: none;
  color: var(--color-body-text);
  transition: opacity 0.2s ease;
}

.grid-item:hover {
  opacity: 0.8;
}

.grid-item img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1; /* 正方形に近く表示（必要に応じて調整） */
  object-fit: contain;
  margin-bottom: 5px;
}

.grid-product-title {
  font-size: clamp(0.8rem, 0.1vw + 0.7rem, 0.95rem);
  font-weight: bold;
  margin: 0;
  padding: 0;
  line-height: 1.3;
}

.grid-view-all {
  grid-column: 1 / -1; /* グリッド全体幅を使用 */
  text-align: right;
  padding-top: 10px;
  font-size: var(--font-size-body-text);
  font-weight: bold;
  color: var(--color-link-text);
}
/* -------------------------------------- */


.dropdown-list li.is-hovered {
  background-color: var(--color-white-emphasis);
  color: var(--color-link-text);
}

.dropdown-list,
.sub-dropdown-list-container ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.dropdown-list li {
  width: 100%;
  list-style: none;
}

.dropdown-list li a {
  display: block;
  width: 100%;
  padding: clamp(8px, 1.5vw, 10px) clamp(15px, 2vw, 20px);
  box-sizing: border-box;
  color: var(--color-accent);
  text-decoration: none;
  font-weight: bold;
  font-size: clamp(0.6rem, 0.4vw + 0.5rem, 0.9rem);
  white-space: nowrap;
}

#product-dropdown > .dropdown-list-container > .dropdown-list li a {
  white-space: normal;
}

.dropdown-list li a:hover {
  color: var(--color-link-text);
  text-decoration: underline;
  background-color: var(--color-white-emphasis);
}


#news-dropdown,
#match-dropdown {
  display: flex;
  align-items: center;
  flex-direction: column;
}

#news-dropdown .dropdown-list,
#match-dropdown .dropdown-list{
  flex-direction: row;
  text-align: center;
  margin-top: 30px;
  gap: 15%;
}

.dropdown-title {
  vertical-align:auto;
  font-size: var(--font-size-body-text);
}

.dropdown-title img {
  height: 30px;
  width: auto;
  padding-right: 20px;
}

#news-dropdown .dropdown-list li,
#match-dropdown .dropdown-list li {
  display: inline-block;
  justify-content: center;
  border-bottom: 1px solid var(--color-accent-3);
}

.new-window-icon {
  width: 10px;
  height: auto;
}

/*==================================
 Responsive Design (Mobile)
==================================*/
.mobile-nav,
.hamburger-menu {
  display: none;
}

@media (max-width: 1000px) {
  .grid-product-title {
    font-weight: 400;
  }
}

@media (max-width: 800px) {
  .header-nav {
    justify-content: flex-start;
  }
  .nav-list {
    justify-content: flex-start;
  }

  .header-search-form input[type="search"] {
    display: none;
  }
}

@media (max-width: 600px) {
  .header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
  }

  .mobile-nav-overlay {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 80px;
    background-color: var(--color-mobile-overray);
    z-index: 1000;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0s 0.3s;
  }

  .mobile-nav-overlay.is-visible {
    visibility: visible;
    opacity: 1;
    transition: opacity 0.3s ease;
  }

  .hamburger-menu {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    margin-right: 20px;
    width: 20px;
    height: 15px;
    cursor: pointer;
    padding: 0;
    background: none;
    border: none;
    align-items: center;
    z-index: 1010;
  }
  
  .hamburger-menu span {
    display: block;
    height: 2px;
    background-color: var(--color-accent);
    width: 100%;
    transition: all 0.3s ease;
  }
  
  .hamburger-menu.is-active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
    
  }
  
  .hamburger-menu.is-active span:nth-child(2) {
    display: none;
  }
  
  .hamburger-menu.is-active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -5px);
  }
  
  .header,
  .header-inner {
    width: 100%;
  }
  
  .header-inner {
    max-width: 100%;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0;
  }

  .header-logo {
    margin: 5px 0 5px 10px;
  }
  .header-logo img {
    height: 100%;
    width: auto;
  }

  .social-links {
    display: none;
  }

  .header-utility .header-search-form {
    display: none;
  }

  .search-form-mobile-container {
    display: flex;
    background-color: #fff;
    width: 100%;
    justify-content: center;
    padding: 10px 0 10px 50px;
    box-sizing: border-box;
  }

  .search-form-mobile {
    display: flex;
    align-items: center;
    gap: 5px;
  }

  .search-form-mobile input[type="search"] {
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 5px 10px;
  }

  .search-button-mobile {
    background: none;
    border: none;
    cursor: pointer;
  }

  .search-button-mobile img {
    height: 25px;
    width: auto;
  }
  
  .header-nav {
    display: none;
  }

  .mobile-nav {
    position: relative;
    top: 100%;
    left: 0;
    width: 100%;
    height: auto;
    background-color: var(--color-accent);
    z-index: 1020;
    padding: 0;
    overflow-y: auto;
    max-height: 60%;
  }
  
  .mobile-nav.is-visible {
    display: block;
  }
  
  .mobile-nav .nav-list {
    flex-direction: column;
    align-items: center;
    width: 100%;
    gap: 0;
  }
  
  .mobile-nav .nav-item {
    width: 100%;
    text-align: center;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .mobile-nav .nav-item:first-child {
    padding-top: 20px;
  }
  
  .mobile-nav .nav-item:last-child {
    border-bottom: none;
    padding-bottom: 20px;
  }
  
  .mobile-nav .nav-item a,
  .mobile-nav .dropdown-toggle {
    font-size: var(--font-size-h4);
    color: #fff;
  }
}