/* =========================
   1. RESET / 基礎設定
   ========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: sans-serif;
  color: #333;
  line-height: 1.5;
  /* 重要：保留導覽列空間，避免內容被固定導覽列覆蓋 */
  margin-top: 80px;
}

/* =========================
   2. 固定導覽列 + 滾動縮小
   ========================= */
.navbar {
  position: fixed;     /* 固定導覽列 */
  top: 0;
  left: 0;
  width: 100%;
  z-index: 999;        /* 置於最上層 */
  background: #fafafa;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  padding: 1rem 2rem;
  transition: all 0.3s ease; /* 平滑過渡 */
}

/* LOGO + 公司名稱區 */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;         /* LOGO 與文字之間的距離 */
}

.logo-img {
  width: 50px;         /* 視需求調整 LOGO 大小 */
  height: auto;
  transition: width 0.3s ease;
}
.logo-text {
  text-decoration: none;
  font-size: 1.8rem;
  font-weight: bold;
  color: #333;
  transition: font-size 0.3s ease;
}
.logo-text:hover {
  color: #0072bc;      /* 滑鼠移上公司名稱時顯示的顏色 */
}

/* 導覽列連結 */
.nav-links {
  display: flex;
  flex-wrap: wrap;        
  justify-content: flex-end;  /* 向右對齊 */
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

/* 連結樣式 */
.nav-links li {
  white-space: nowrap;  /* 避免斷詞換行 */
}
.nav-links a {
  text-decoration: none;
  color: #333;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  position: relative;
  display: inline-block;
  font-size: 1.3rem;
}

/* 大螢幕下：a::after 產生從中間展開的底線 */
.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%;             /* 以連結正中為基準 */
  bottom: -4px;          /* 與文字底部距離 */
  width: 100%;           /* 與連結文字同寬 */
  height: 4px;           /* 線條粗細 */
  background-color: #0072bc;
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform 0.3s ease;
}
.nav-links a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

/* 強制換行的空白 li */
.line-break {
  flex-basis: 100%;
  height: 0;
}

/* 滾動後縮小 (shrink) 狀態 */
.navbar.shrink {
  height: 60px;
  padding: 0.5rem 2rem;
}
.navbar.shrink .logo-img {
  width: 40px;
}
.navbar.shrink .logo-text {
  font-size: 1.6rem;
}

/* =========================
   漢堡區
   ========================= */

/* 漢堡按鈕基本樣式 */
.hamburger {
  display: none; /* 大螢幕隱藏 */
  cursor: pointer;
  position: relative;
  width: 30px;
  height: 24px;
}

.hamburger span {
  display: block;
  height: 3px;
  width: 100%;
  background: #333;
  margin: 4px 0;
  transition: all 0.3s ease;
}

/* 小螢幕設定：顯示漢堡按鈕並啟用轉換效果 */
@media (max-width: 1000px) {
  .hamburger {
    display: block;
    position: relative; /* 或 absolute / fixed，依需求調整 */
    z-index: 1100;      /* 確保漢堡按鈕在選單上方 */
  }
  .nav-links {
    z-index: 1000;
  }
  
  /* 漢堡按鈕變叉叉效果 */
  .hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .hamburger.open span:nth-child(2) {
    opacity: 0;
  }
  .hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  
  /* 漢堡模式下：導覽連結以側邊選單形式顯示 */
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: 30%;
    height: 100vh;
    background-color: #fafafa;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding-top: 60px;  /* 預留導覽列高度 */
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 1000;
  }
  
  .nav-links li {
    margin: 1rem;
  }
  .nav-links a {
    display: block;
    width: 100%;
    padding: 0.5rem;
  }
  
  /* 當選單開啟時 */
  .nav-links.open {
    transform: translateX(0);
  }
  
  /* 在漢堡模式下，隱藏 a::after，改用包在 <span> 內的偽元素 */
  .nav-links a::after {
    display: none;
  }
  
  /* 調整每個連結內的 <span> */
  .nav-links a span {
    position: relative;
    display: inline-block;
  }
  /* 在漢堡模式下，底線偽元素掛在 <span> 上，並調整寬度與距離 */
  .nav-links a span::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -4px; /* 可依需求調整，例如 -2px */
    width: 90%;   /* 調整線條長度 */
    height: 4px;
    background-color: #0072bc;
    transform: translateX(-50%) scaleX(0);
    transform-origin: center;
    transition: transform 0.3s ease;
  }
  .nav-links a span:hover::after {
    transform: translateX(-50%) scaleX(1);
  }
}

/* =========================
   3. 其他常用區塊
   ========================= */

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* 首頁 - Hero 區塊 */
.hero-section {
  height: 70vh;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
}



.hero-content {
  text-align: center;
  color: #fff;
  background: rgba(0,0,0,0.4);
  padding: 2rem;
  border-radius: 4px;
}
.hero-content h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}
.btn {
  display: block;
  width: fit-content;
  background: #0072bc;
  color: #fff;
  padding: 0.8rem 1.2rem;
  text-decoration: none;
  border-radius: 4px;
  margin: 0 auto;
}
.btn:hover {
  background: #005999;
}

/* 首頁 - 服務項目區塊 */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.service-item {
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 1rem;
  text-align: center;
}
.service-item img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

/* about.html 區塊 */
.about-intro {
  content: "";
  display: block;
  clear: both;
}
.about-philosophy {
  margin-top: 2rem;
}
.about-philosophy ul {
  list-style: disc;
  margin-left: 2rem;
}
.about-cert {
  margin-top: 2rem;
  display: flex;
  flex-direction: row;
  gap: 2rem;
}
.about-cert ul {
  list-style: disc;
  margin-left: 2rem;
}

/* 專業證照：多筆使用 .license-list */
.license-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.license-item {
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 1rem;
  text-align: center;
}
.license-item img {
  width: 100%;
  max-width: 180px;
  height: auto;
  display: block;
  margin: 0 auto 1rem;
}
.license-name {
  font-weight: bold;
  margin-bottom: 0.5rem;
}
.license-valid {
  color: #555;
  font-size: 0.9rem;
}

/* services.html */
.service-item {
  margin-bottom: 2rem;
}
.service-item img {
  margin: 1rem 0;
  border-radius: 4px;
}

/* =========================
   4. Projects.html - 多欄 (Masonry) 佈局
   ========================= */
.project-grid {
  column-count: 3;
  column-gap: 1.5rem;
}

/* RWD：992px 以下 => 2 欄 */
@media (max-width: 992px) {
  .project-grid {
    column-count: 2;
  }
}

/* RWD：576px 以下 => 1 欄 */
@media (max-width: 576px) {
  .project-grid {
    column-count: 1;
  }
}

/* 每個卡片以 inline-block 在多欄中排列 */
.project-item {
  display: inline-block;
  width: 100%;
  margin-bottom: 1.5rem;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-sizing: border-box;
  padding: 1rem;
}

.project-item img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
  margin-bottom: 0.5rem;
}
.project-item h3 {
  margin-top: 0.5rem;
  font-size: 1.1rem;
}

/* contact.html */
.contact-section img {
  margin-top: 1rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  display: block;
}

/* =========================
   5. Lightbox 效果 (點擊放大檢視)
   ========================= */
.lightbox {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.8);
  justify-content: center;
  align-items: center;
}
.lightbox-img {
  max-width: 80%;
  max-height: 80%;
  border-radius: 4px;
  box-shadow: 0 0 10px rgba(0,0,0,0.5);
}
.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 3rem;
  color: #fff;
  cursor: pointer;
  user-select: none;
  transition: color 0.2s;
}
.lightbox-close:hover {
  color: #ccc;
}

/* =========================
   7. Past Projects Table 美化
   ========================= */
.past-projects-wrap {
  display: none;
  margin-top: 2rem;
  overflow-x: auto;
}

.past-projects-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
  text-align: left;
}

.past-projects-table thead {
  background: #f7f7f7;
}

.past-projects-table th,
.past-projects-table td {
  padding: 0.75rem 1rem;
  border: 1px solid #ddd;
}

.past-projects-table tr:hover {
  background: #fafafa;
}


/* =========================
   index 
   ========================= */
   
.home-intro h2 {
  font-size: 2rem; /* 調整“起暘科技工程有限公司”標題的字體大小 */
}

.home-services h2 {
  font-size: 2rem; /* 調整“主要服務”標題的字體大小 */
}
/* 工程實績區塊：可根據您的命名習慣自行調整 class 名稱 */

.home-projects {
  margin-top: 2rem;       /* 與上方區塊留些距離 */
  text-align: center;     /* 置中標題與圖片描述 */
}

.home-projects h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  text-align: left;
}

/* 讓 6 張圖片排成 2 行 x 3 列 (視螢幕大小而定) */
.projects-overview {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 一列三個 */
  gap: 1.5rem; /* 卡片間距 */
  justify-items: center; /* 讓每個卡片在該欄置中 */
}

/* 單個卡片 */
.project-item {
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 1rem;
  width: 100%;
  max-width: 400px; /* 可自行調整卡片寬度上限 */
  box-sizing: border-box;
}

.project-item img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

/* 卡片標題 */
.project-item h3 {
  font-size: 1.1rem;
  margin-top: 0.5rem;
}



/* =========================
   6. 頁尾
   ========================= */
footer {
  background: #347cbe;
  color: #fff;
  text-align: center;
  padding: 1rem 0;
  font-size: 0.9rem;
  margin-top: 2rem;
}
.footer-content p {
  margin: 0.5rem 0;
}
.footer-content a {
  color: #fff;  /* Email 連結也維持白色 */
  text-decoration: underline; /* 可自行決定是否有底線 */
}
.footer-content a:hover {
  color: #9cd5f2; /* 滑鼠移上 Email 時改變顏色 */
}