/* 頁首樣式 */
header {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 40px);
  max-width: 1200px;
  height: var(--header-height);
  /* 縮短高度 */
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  z-index: 1000;
  border-radius: 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  overflow: visible;
  display: flex;
  align-items: center;
  padding: 0 30px;
  box-sizing: border-box;
  transition: all var(--transition-normal);
}

.header_container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  /* 確保容器撐滿 header 高度 */
}

.logo {
  font-size: var(--font-size-h5);
  /* Was h4(20px), now h5(20px) */
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.logo img {
  height: 40px;
  width: auto;
}

.nav_menu {
  display: flex;
  height: 100%;
  /* 撐滿高度 */
  gap: 0;
  /* 移除間距，改用 nav_link 的 padding 撐開 */
}

.nav_link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-primary);
  padding: 0 25px;
  height: 100%;
  display: flex;
  align-items: center;
  transition: all var(--transition-normal);
}

@media (hover: hover) {
  .nav_link:hover {
    color: var(--color-primary);
    background-color: rgba(var(--color-primary-rgb), 0.08);
    /* 長方形微透背景 */
  }
}

/* 當前頁面狀態 */
.nav_link.active {
  color: var(--color-primary);
  font-weight: 700;
  background-color: rgba(var(--color-primary-rgb), 0.08);
  /* Match hover state background */
}

/* 手機版選單切換按鈕 */
.mobile_toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  /* 減少間距讓整體更緊湊 */
  cursor: pointer;
  z-index: 1001;
  height: 20px;
  /* 固定高度與三條線總高度一致 */
  justify-content: space-between;
  /* 改為 space-between 讓線條均勻分布 */
}

.mobile_toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: var(--transition-normal);
}

/* 桌機版隱藏手機選單 logo */
.mobile_menu_logo {
  display: none;
}

@media (max-width: 1100px) {
  header {
    padding: 0 15px;
  }

  .nav_link {
    padding: 0 11px;
  }
}

/* 平板版 (776-992px) - 防止導航文字單字換行 */
@media (max-width: 992px) and (min-width: 776px) {
  .nav_link {
    /* 確保至少能容納兩個中文字 */
    white-space: nowrap;
    /* 防止文字換行 */
  }
}

/* 響應式調整 */
@media (max-width: 768px) {
  header {
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    transform: none;
    max-width: none;
    padding: 0 20px;
    /* Symmetrical padding */
    overflow: visible;
    align-items: center;
    /* 確保內容物垂直居中 */
  }

  /* 手機版 menu：側邊滑入、位於 header 下方。
     ⚠️ 不能用 transform 做動畫 — transform 會讓 .nav_menu 變成 fixed 子元素的 containing block，
     導致 cart/member 的 position: fixed 變成相對 nav_menu 而不是 viewport。
     ⚠️ 也不能用 clip-path 隱藏 — clip-path 會把 cart/member descendants 也 clip 掉。
     改用 left: -100% 位移，並在 body/html 加 overflow-x: clip 確保不洩漏到 viewport 外。 */
  .nav_menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    height: calc(100dvh - var(--header-height));
    background-color: var(--color-ivory);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 12px 0 24px;
    overflow: hidden;
    box-sizing: border-box;
    z-index: 1000;
    transition: left 0.4s ease-out;
  }

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

  /* 手機版選單排列順序：nav_link 在上，lang/social 在下 */
  .nav_menu .nav_link {
    order: 1;
  }

  .nav_menu .header_icons {
    order: 2;
  }

  .nav_menu .mobile_menu_logo {
    order: 3;
  }

  /* mobile_menu_logo block：保留 social + copyright，圖片隱藏。
     ⚠️ 不用 margin-top: auto — 它會把剩餘空間推到上方造成 nav 整段下沉 */
  .mobile_menu_logo {
    position: relative;
    bottom: auto;
    left: auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding-top: 12px;
  }

  /* 移除 lang 與 social 之間的分隔線 */
  .mobile_menu_logo::before {
    display: none;
  }

  /* 隱藏選單內 logo 圖片（match design_a 排版） */
  .mobile_menu_logo img {
    display: none;
  }

  .mobile_social_icons {
    display: flex;
    justify-content: center;
    gap: 30px;
  }

  .mobile_social_icons .social_icon {
    color: #333;
    font-size: 20px;
    transition: all 0.3s ease;
  }

  .mobile_social_icons .social_icon:hover {
    color: var(--color-primary);
    transform: translateY(-2px);
  }

  .mobile_copyright {
    font-size: 12px;
    color: rgba(0, 0, 0, 0.5);
    margin-top: 0;
    padding: 0 10px;
  }

  /* 手機版 mobile_toggle 保持正常流動 */
  .mobile_toggle {
    display: flex;
    align-self: center;
    z-index: 1002;
    position: relative;
  }

  /* 選單項目：原配色（深字）+ 底線分隔（layout match design_a） */
  .nav_menu .nav_link {
    width: 100%;
    padding: 20px 20px;
    height: auto;
    justify-content: flex-start;
    text-align: left;
    font-size: 1.1rem;
    color: var(--color-text-primary);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  }

  .nav_menu .nav_link:last-of-type {
    margin-bottom: 0;
  }

  .nav_menu .nav_link.active {
    background-color: rgba(var(--color-primary-rgb), 0.15);
    color: var(--color-primary);
  }

  /* 選單打開時鎖背景捲動 */
  body.menu-open {
    overflow: hidden;
  }
}

/* ==============================================
   購物車 & 會員按鈕
   ============================================== */
.header_icons {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 0;
  margin-left: 10px;
}

.header_icon_btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 100%;
  color: var(--color-text-primary);
  font-size: 1.1rem;
  transition: all var(--transition-normal);
  position: relative;
}

@media (hover: hover) {
  .header_icon_btn:hover {
    color: var(--color-primary);
    background-color: rgba(var(--color-primary-rgb), 0.08);
  }
}

/* 已登入：會員頭像（email 首字母） */
.member_btn.is_logged_in {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.member_avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-text-white);
  font-family: var(--font-family-en);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
  text-transform: uppercase;
}

@media (hover: hover) {
  .member_btn.is_logged_in:hover {
    background-color: transparent;
  }
  .member_btn.is_logged_in:hover .member_avatar {
    background: var(--color-primary-deep);
  }
}

/* 會員下拉選單 */
.member_dropdown {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.member_dropdown_menu {
  position: absolute;
  top: 100%;
  right: 0;
  transform: translateY(-4px);
  min-width: 260px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-bg-tint-3);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding: 14px 0 8px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  z-index: 1010;
}

.member_dropdown.is-open .member_dropdown_menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* 選單頂部（頭像 + email） */
.member_dropdown_header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 20px 14px;
}

.member_avatar_lg {
  flex-shrink: 0;
}

.member_email {
  font-size: 0.9rem;
  color: var(--color-text-primary);
  word-break: break-all;
  line-height: 1.3;
}

.member_dropdown_divider {
  height: 1px;
  background: var(--color-bg-tint-3);
  margin: 0 0 6px;
}

/* 選單項目 */
.member_dropdown_item {
  display: block;
  width: 100%;
  padding: 11px 20px;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--color-text-primary);
  text-align: left;
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

@media (hover: hover) {
  .member_dropdown_item:hover {
    background: var(--color-bg-light);
    color: var(--color-primary);
  }
}

@media (max-width: 768px) {
  .member_dropdown_menu {
    right: -10px;
  }
}

/* 購物車數量標籤 */
.cart_badge {
  position: absolute;
  top: 50%;
  right: 6px;
  transform: translateY(-70%);
  background-color: var(--color-primary);
  color: var(--color-text-white);
  font-size: 0.65rem;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  line-height: 1;
}
.cart_badge:empty {
  display: none;
}

@media (max-width: 1100px) {
  .header_icons {
    margin-left: 0;
  }

  .header_icon_btn {
    width: 40px;
  }
}

@media (max-width: 768px) {
  /* dissolve .header_icons box，讓 cart/member 獨立 fixed、lang 留在選單內 flex 流 */
  .nav_menu .header_icons {
    display: contents;
  }

  /* cart + member 固定在 header strip 與 hamburger 同列，並覆寫 nav_menu 的 visibility/opacity */
  .nav_menu .cart_btn,
  .nav_menu .member_btn,
  .nav_menu .member_dropdown {
    position: fixed;
    top: 0;
    height: var(--header-height);
    z-index: 1002;
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    overflow: visible; /* 避免 nav_menu overflow:hidden 裁切下拉選單 */
  }
  .nav_menu .cart_btn  { right: 104px; }
  .nav_menu .member_btn,
  .nav_menu .member_dropdown { right: 60px; }

  /* Reset member_btn if it's inside member_dropdown */
  .nav_menu .member_dropdown .member_btn {
    position: relative;
    right: auto;
    top: auto;
    height: 100%;
    z-index: auto;
  }

  /* 手機版：member_dropdown_menu 改用 fixed 定位，完全脫出 nav_menu 的 overflow:hidden clip */
  .nav_menu .member_dropdown_menu {
    position: fixed;
    top: var(--header-height);
    right: 0;
    transform: translateY(-4px);
  }

  .nav_menu .member_dropdown.is-open .member_dropdown_menu {
    transform: translateY(0);
  }

  .header_icon_btn {
    width: 44px;
    font-size: 1.2rem;
  }
}

/* ==============================================
   語系下拉選單
   ============================================== */
.lang_dropdown {
  position: relative;
  height: 100%;
}

.lang_dropdown_toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 0 12px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-family-base);
  transition: all var(--transition-normal);
}

.lang_current {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-primary);
  border: 1.5px solid var(--color-text-primary);
  border-radius: 4px;
  background: transparent;
  transition: all var(--transition-normal);
}

@media (hover: hover) {
  .lang_dropdown_toggle:hover .lang_current {
    color: var(--color-primary);
    border-color: var(--color-primary);
  }
}

.lang_dropdown_menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  min-width: auto;
  background-color: var(--color-moonshine);
  border-radius: 6px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  list-style: none;
  margin: 6px 0 0;
  padding: 6px 0;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  z-index: 1010;
}

.lang_dropdown.is-open .lang_dropdown_menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.lang_option {
  display: block;
  padding: 8px 20px;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  transition: all var(--transition-normal);
  white-space: nowrap;
}

@media (hover: hover) {
  .lang_option:hover {
    color: var(--color-text-white);
    background-color: var(--color-cider-pear);
  }
}

.lang_option.active {
  color: var(--color-text-white);
  font-weight: 700;
  background-color: var(--color-cider-pear);
}

@media (max-width: 768px) {
  /* lang_dropdown 在選單內（mobile_social_icons 之上），靠左對齊 */
  .nav_menu .lang_dropdown {
    order: 2;                     /* 在 nav_link (1) 與 mobile_menu_logo (3) 之間 */
    align-self: flex-start;       /* 撤掉 stretch，自身寬度靠內容 */
    height: auto;
    margin: 18px 0 0 20px;        /* 左側 20px 對齊 nav_link 內 padding */
  }

  .nav_menu .lang_dropdown_toggle {
    padding: 0;
    justify-content: flex-start;
  }

  /* 選單內語系按鈕：pill button + 向下箭頭，明確顯示可點選 */
  .nav_menu .lang_current {
    min-width: auto;
    height: auto;
    padding: 6px 16px;
    font-size: 0.92rem;
    border-radius: 999px;
    border-width: 1.5px;
  }

  .nav_menu .lang_current::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border: 4px solid transparent;
    border-top-color: currentColor;
    margin-left: 8px;
    transform: translateY(2px);
    transition: transform 0.2s ease;
  }

  /* 展開時箭頭翻轉 */
  .nav_menu .lang_dropdown.is-open .lang_current::after {
    transform: translateY(-1px) rotate(180deg);
  }


  .lang_dropdown_menu {
    right: auto;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
  }

  .lang_dropdown.is-open .lang_dropdown_menu {
    transform: translateX(-50%) translateY(0);
  }
}

/* ==============================================
   桌機版導覽列：logo 靠左、nav_link 群靠右
   ⚠️ .header_icons 是 .nav_menu 的子元素（手機版側滑選單需要），
      桌機版把它 absolute 拉出 nav_menu 的流。
   ⚠️ 購物車／會員／語系目前隱藏中，原本第三欄是留給它們的保底寬度，
      留著會把 nav_link 群往左推，故先移除。恢復 icons 時把下方兩處註解的值改回來。
   ============================================== */
@media (min-width: 769px) {
  .header_container {
    position: relative;
    display: grid;
    /* icons 恢復時改回：minmax(160px, 1fr) auto minmax(160px, 1fr) */
    grid-template-columns: minmax(160px, 1fr) auto;
  }

  .nav_menu {
    /* icons 恢復時改回：center */
    justify-content: flex-end;
  }

  .header_icons {
    position: absolute;
    top: 0;
    right: 0;
    margin-left: 0;
  }
}