/* Shared navigation styles */

#nav-container {
  position: relative;
  z-index: 9999;
}

#nav-container nav {
  position: fixed;
  inset: 0 0 auto 0;
  transform: translateY(-110%);
  opacity: 0;
  width: 100%;
  background: linear-gradient(135deg, var(--nav-bg-1), var(--nav-bg-2));
  border-bottom: 1px solid var(--glass-border);
  /* 新增：頂部反射光與內陰影 */
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 
    0 16px 40px rgba(6, 16, 31, 0.2),
    inset 0 1px 2px rgba(255, 255, 255, 0.1);
  
  /* 強化：模糊效果與飽和度提升 */
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  
  transition: transform 0.35s ease, opacity 0.35s ease, background 0.3s ease;
  overflow: visible;
}

#nav-container nav.visible {
  transform: translateY(0);
  opacity: 1;
}

.nav-mobile-header {
  display: none;
}

.nav-menu {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 6px;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 10px clamp(12px, 2vw, 24px);
  box-sizing: border-box;
}

#nav-container nav a,
#nav-container nav .nav-link,
#nav-container nav button.dropdown-toggle {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-main);
  text-decoration: none;
  font: 600 14px/1.1 "Noto Sans TC", "Segoe UI", system-ui, sans-serif;
  letter-spacing: 0.02em;
  border-radius: 999px;
  padding: 14px 14px;
  min-height: 53px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease,
    box-shadow 0.2s ease;
}

#nav-container nav a:hover,
#nav-container nav button.dropdown-toggle:hover {
  background: var(--nav-hover-bg);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

#nav-container nav a:focus-visible,
#nav-container nav button.dropdown-toggle:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

.nav-link {
  color: var(--text-main);
  white-space: nowrap;
}

.nav-item-admin .nav-link {
  color: var(--highlight-yellow);
}

.dropdown {
  position: relative;
  display: flex;
  align-items: stretch;
  padding-bottom: 10px;
  margin-bottom: -10px;
}

.dropdown-toggle {
  position: relative;
}

.nav-caret {
  font-size: 0.82em;
  opacity: 0.8;
  transition: transform 0.2s ease;
}

.dropdown.open > .dropdown-toggle .nav-caret {
  transform: rotate(180deg);
}

/* 電腦版選單項目的高亮底線樣式 */
#nav-menu a.active,
#nav-menu .dropdown-toggle.active {
    color: #10B981; /* 綠色文字 */
    font-weight: bold;
    position: relative;
}

/* 底部小線條 (就像瑪奇 Mobile 頂部選單) */
#nav-menu a.active::after,
#nav-menu .dropdown-toggle.active::after {
    content: "";
    position: absolute;
    bottom: 4px; /* 依據導覽列 padding 調整距離 */
    left: 50%;
    transform: translateX(-50%);
    width: 80%; /* 線條長度 */
    height: 3px; /* 線條粗細 */
    background-color: #10B981; /* 綠色條狀 */
    border-radius: 2px;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: calc(100% - 1px);
  left: 0;
  min-width: 220px;
  padding: 8px;
  margin: 0;
  border-radius: 18px;
  background: var(--nav-bg-1);
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.28);
  z-index: 10001;
}

/*.dropdown:hover .dropdown-content,
.dropdown:focus-within .dropdown-content,
.dropdown.open > .dropdown-content {
  display: block;
  animation: navDropIn 0.18s ease-out;
}*/
/* ✅ 改成只有 .open 時才顯示選單 */
.dropdown.open > .dropdown-content {
  display: block;
  animation: navDropIn 0.18s ease-out;
}

/* 搜尋區塊與篩選器 */
#searchContainer {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  padding: 15px 20px;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  margin-bottom: 20px;
}

.quick-search-label {
  font-weight: 600;
  color: var(--primary-blue);
  font-size: 16px;
}

#searchInput {
  padding: 10px 16px;
  flex: 1;
  max-width: 300px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  color: var(--text-main);
  font-size: 14px;
  transition: all 0.3s ease;
}

#searchInput:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 10px rgba(77, 163, 255, 0.3);
  background: var(--glass-bg);
}

/* --- 手機版 (768px 以下)：只靠點擊 (.open) 展開與收合 --- */
@media (max-width: 768px) {
  .dropdown.open > .dropdown-content {
    display: block;
  }
}

/* --- 電腦版 (769px 以上)：滑鼠移過去 (:hover) 或 點擊 (.open) 都能展開 --- */
@media (min-width: 769px) {
  .dropdown:hover > .dropdown-content,
  .dropdown.open > .dropdown-content {
    display: block;
    animation: navDropIn 0.18s ease-out;
  }
}

@keyframes navDropIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.dropdown-content a {
  display: flex;
  width: 100%;
  padding: 10px 14px;
  border-radius: 12px;
  color: var(--text-muted);
  font-size: 13px;
  white-space: nowrap;
  box-sizing: border-box;
}

.dropdown-content a:hover {
  background: var(--nav-hover-bg);
  color: var(--primary-blue);
  transform: translateX(4px);
}

@media (max-width: 768px) {
  #nav-container {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 9999;
    height: 58px; /* 初始高度僅為標頭 */
    transition: height 0.4s ease;
  }

  /* 當選單開啟時，外層容器展開成全螢幕 */
  #nav-container:has(nav.menu-open),
  #nav-container.menu-open {
     height: 100vh;
     height: 100dvh;
  }

  #nav-container nav {
    background: linear-gradient(135deg, var(--nav-bg-1), var(--nav-bg-2));
    height: 58px; /* 預設只顯示標頭高度 */
    display: flex;
    flex-direction: column;
    transform: translateY(-110%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), height 0.4s ease;
    opacity: 1;
    overflow: hidden; /* 平時隱藏溢出的選單內容 */
  }

  #nav-container nav.visible {
    transform: translateY(0);
  }

  /* 關鍵：只有在選單開啟時才變成長度 100% */
  #nav-container nav.menu-open {
    height: 100vh;
    height: 100dvh;
    overflow: visible;
  }

  .nav-mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    height: 58px;
    padding: 0 14px 0 18px;
    box-sizing: border-box;
    flex-shrink: 0;
    width: 100%;
    background: transparent; /* 背景由父層提供 */
  }

  .mobile-home-link {
    color: var(--text-main);
    text-decoration: none;
    font: 800 18px/1 "Noto Sans TC", "Segoe UI", system-ui, sans-serif;
    letter-spacing: 0.03em;
  }

  .mobile-actions {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .hamburger-btn {
    width: 44px;
    height: 44px;
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    background: var(--glass-bg);
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    padding: 0 11px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    position: relative;
    z-index: 10002;
    cursor: pointer;
  }

  .hamburger-btn span {
    display: block;
    width: 100%;
    height: 2px;
    border-radius: 999px;
    background-color: var(--text-main);
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  /* 🚀 新增：漢堡選單變形為 X */
  .hamburger-btn[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .hamburger-btn[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .hamburger-btn[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .nav-menu {
    display: none; /* 由 JS 控制 toggle */
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    gap: 12px;
    width: 100%;
    
    /* 🚀 關鍵修正：滿版高度且獨立捲動 */
    flex: 1;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
    
    padding: 10px 12px 80px; /* 底部預留充足空間 */
    box-sizing: border-box;
    background: transparent;
    border-top: 1px solid var(--glass-border);
  }

  .nav-menu.active {
    display: flex !important;
  }

  .nav-menu > .nav-link.desktop-only,
  .nav-item-theme.desktop-only {
    display: none !important;
  }

  /* 🚀 確保手機版標頭內的按鈕樣式一致 */
  .theme-toggle-btn.nav-link {
    display: inline-flex !important;
    min-height: 44px !important;
    width: 44px;
    padding: 0 !important;
    justify-content: center;
    border: 1px solid var(--glass-border) !important;
    background: var(--glass-bg) !important;
    border-radius: 14px !important;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
  }

  .dropdown {
    width: 100%;
    flex-direction: column;
    border-radius: 18px;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    overflow: visible; /* 🚀 移除隱藏，防止剪裁 */
    flex-shrink: 0; /* 🚀 關鍵：防止被壓縮 */
  }

  .dropdown-toggle,
  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 14px 16px;
    min-height: 52px;
    border-radius: 0;
    background: transparent;
  }

  .dropdown-toggle {
    font-size: 16px;
  }

  .dropdown-content {
    position: static;
    display: none;
    width: 100%;
    min-width: 0;
    padding: 0 8px 8px;
    margin: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  .dropdown.open > .dropdown-content {
    display: block;
  }

  .dropdown-content a {
    padding: 12px 14px;
    font-size: 14px;
    color: var(--text-muted);
    border-radius: 12px;
  }

  .dropdown-content a:hover {
    transform: none;
  }
}

/* 🚀 電腦版隱藏手機專用的 Actions */
@media (min-width: 769px) {
  .mobile-actions {
    display: none !important;
  }
}