/* navbar.css */
/* 導航欄基本樣式 */
.navbar {
  position: fixed;
  top: 0;
  background-color: #fff;
  width: 100%;
  border-bottom: 1px solid #e0e0e0;
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  position: relative;
}

/* Logo 區域樣式 */
.logo-container {
  display: flex;
  align-items: center;
}

.logo-container img {
  height: 70px;
}

/* 導航連結樣式 */
.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: #000000;
  font-size: 16px;
}

.nav-links a:hover {
  color: #ff8000;
}

/* 漢堡選單按鈕 */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 25px;
  cursor: pointer;
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 998;
}

.menu-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: #333;
  transition: all 0.3s ease;
}

/* 子選單樣式 */
.nav-item.has-submenu {
  position: relative;
}

.sub-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-55%);
  width: 100vw;
  background: #fff;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  padding: 20px 0;
  z-index: 1000;
}

/* 子選單容器樣式 */
.sub-menu .container {
  width: 100%;
  max-width: none;
  padding: 0;
}

.sub-menu .row {
  margin: 0 auto;
  max-width: 1200px;
  display: flex;
  justify-content: flex-start;
}

.sub-menu .col-md-3 {
  flex: 0 0 25%;
  padding: 0 20px;
}

/* 子選單標題和列表樣式 */
.menu-section {
  color: #333;
  font-weight: bold;
  margin-bottom: 15px;
  font-size: 16px;
}

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

.sub-menu li {
  margin-bottom: 10px;
}

.sub-menu a {
  color: #666;
  text-decoration: none;
  transition: color 0.3s;
}

/* 箭頭樣式 */
.arrow {
  display: inline-block;
  margin-left: 5px;
  transition: transform 0.3s ease;
}

.arrow.active,
.nav-item:hover .arrow {
  transform: rotate(180deg);
}

/*實驗室分析儀子選單*/
.sub-submenu {
  margin-top: 8px;
  margin-bottom: 8px;
}

.nav-links ul li:hover .sub-submenu {
  display: block;
}

.submenu-icon {
  font-size: 14px;
  margin-left: 5px;
  vertical-align: middle;
  transition: transform 0.3s ease;
}

.sub-submenu li {
  margin-bottom: 3px; /* 子項目之間的間距 */
}

.sub-submenu a {
  font-size: 0.9em; /* 將字體縮小一號 */
  color: #292929;
  padding: 3px 0;
  padding-left: 12px;
  display: block;
}

/* ===== 2026-10 美化 ===== */
.navbar {
  border-bottom: 0;
  box-shadow: 0 2px 14px rgba(11, 37, 69, 0.08);
}

@media (min-width: 1201px) {
  .nav-links {
    align-items: center;
  }
}

@media (max-width: 1200px) {
  .navbar .nav-links > a,
  .navbar .nav-links > .nav-item > a {
    padding: 0.75rem 1.25rem;
  }

  .navbar .sub-menu .menu-section {
    padding: 0.6rem 1.25rem 0.4rem;
  }

  .navbar .sub-menu a {
    padding-left: 2rem;
  }
}

.nav-links > a,
.nav-links > .nav-item > a {
  position: relative;
  padding: 0.35rem 0;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: #1e293b;
}

.nav-links > a .bi-house-door-fill {
  margin-right: 0.25rem;
  color: #0a5bb5;
}

@media (min-width: 1201px) {
  .nav-links > a::after,
  .nav-links > .nav-item > a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    border-radius: 2px;
    background: #f08a24;
    transform: scaleX(0);
    transition: transform 0.25s ease;
  }

  .nav-links > a:hover::after,
  .nav-links > .nav-item:hover > a::after {
    transform: scaleX(1);
  }

  .sub-menu {
    border-top: 3px solid #0a5bb5;
    box-shadow: 0 14px 30px rgba(11, 37, 69, 0.12);
  }
}

.menu-section {
  color: #0b2545;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid #e2e8f0;
}

.sub-menu a:hover {
  color: #f08a24;
}

/* ===== 導覽列站內搜尋 ===== */
.nav-search {
  position: relative;
  display: flex;
  align-items: center;
  margin: 0;
}

.nav-search input {
  font: inherit;
  font-size: 0.95rem;
  color: #1e293b;
  outline: none;
}

.nav-search button {
  display: grid;
  place-items: center;
  border: 0;
  background: transparent;
  color: #0a5bb5;
  cursor: pointer;
}

@media (min-width: 1201px) {
  .nav-search button {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.05rem;
    transition: background-color 0.2s ease;
  }

  .nav-search button:hover,
  .nav-search.open button {
    background: #eef4fb;
  }

  .nav-search input {
    position: absolute;
    top: calc(100% + 16px);
    right: -8px;
    width: 300px;
    padding: 0.7rem 1rem;
    border: 2px solid #0a5bb5;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 14px 30px rgba(11, 37, 69, 0.16);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }

  .nav-search.open input {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

@media (max-width: 1200px) {
  .navbar .nav-search {
    order: -1;
    margin: 0.9rem 1.25rem 0.2rem;
    border: 2px solid #cfdced;
    border-radius: 12px;
    background: #fff;
    overflow: hidden;
  }

  .nav-search input {
    flex: 1;
    min-width: 0;
    padding: 0.65rem 0.9rem;
    border: 0;
    background: transparent;
  }

  .nav-search button {
    width: 46px;
    height: 44px;
    font-size: 1.1rem;
  }
}