/* 全局 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft JhengHei", sans-serif;
}

body {
  background-color: #f8f9fa;
}

/* navbar */
.navbar {
  background-color: #0066cc;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 3%;
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
}

.navbar-logo {
  display: flex;
  align-items: center;
}

.navbar-logo img {
  height: 40px;
  margin-right: 10px;
}

.navbar-logo h1 {
  color: white;
  font-size: 1.8rem;
  font-weight: 700;
}

.navbar-menu {
  display: flex;
  list-style: none;
}

.navbar-item {
  margin-left: 30px;
}

.navbar-link {
  color: white;
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.navbar-link:hover,
.navbar-link.active {
  background-color: rgba(255, 255, 255, 0.2);
}

/* 圖片 */
.banner {
  position: relative;
  width: 100%;
  height: 300px;
  overflow: hidden;
}

.banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: white;
  text-align: center;
  padding: 20px;
}

.banner-overlay h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.banner-overlay p {
  font-size: 1.2rem;
  max-width: 700px;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* sections */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 60px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 2.2rem;
  color: #0066cc;
  margin-bottom: 15px;
}

.underline {
  height: 4px;
  width: 70px;
  background-color: #0066cc;
  margin: 0 auto;
}

/* 必修 */
.courses-section {
  background-color: #ffffff;
  padding: 70px 0;
}

.courses-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.course-table-container {
  width: 100%;
  overflow-x: auto;
  margin-top: 20px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.course-table {
  width: 100%;
  border-collapse: collapse;
  background-color: white;
  border-radius: 10px;
  overflow: hidden;
}

.course-table th,
.course-table td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid #eaeaea;
}

.course-table th {
  background-color: #0066cc;
  color: white;
  font-size: 1.2rem;
  font-weight: 600;
}

.course-table th:first-child {
  width: 20%;
}

.course-table tr:last-child td {
  border-bottom: none;
}

.course-table tr:hover {
  background-color: #f8f9fa;
}

.year-cell {
  font-weight: 700;
  font-size: 1.2rem;
  color: #0066cc;
  background-color: rgba(0, 102, 204, 0.05);
}

.course-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 0;
  padding: 0;
}

.course-list li {
  padding: 6px 15px;
  background-color: #f0f7ff;
  border-radius: 20px;
  color: #0052a5;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.course-list li:hover {
  background-color: #0066cc;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* 選修 */
.elective-courses-section {
  background-color: #f5f7fa;
  padding: 70px 0;
}

.elective-content {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.elective-category {
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  overflow: hidden;
  transition: transform 0.3s ease;
}

.elective-category:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 102, 204, 0.15);
}

.category-header {
  background-color: #0066cc;
  color: white;
  padding: 15px 20px;
}

.category-header h3 {
  font-size: 1.3rem;
  font-weight: 600;
}

.elective-courses {
  display: flex;
  flex-wrap: wrap;
  padding: 20px;
  gap: 12px;
}

.elective-course {
  padding: 8px 16px;
  background-color: #f0f7ff;
  border-radius: 20px;
  color: #0052a5;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: inline-block;
}

.elective-course:hover {
  background-color: #0066cc;
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
}

/* 師資介紹 */
.faculty-section {
  background-color: #ffffff;
  padding: 70px 0;
}

.faculty-content {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 20px;
}

.professor-card {
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.professor-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 25px rgba(0, 102, 204, 0.15);
}

.professor-image {
  width: 100%;
  height: 350px;
  overflow: hidden;
}

.professor-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.professor-card:hover .professor-image img {
  transform: scale(1.05);
}

.professor-info {
  padding: 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.professor-name {
  color: #0066cc;
  font-size: 1.4rem;
  margin-bottom: 5px;
}

.professor-title {
  color: #555;
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid #e5e5e5;
}

.professor-details {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.professor-education {
  color: #333;
  font-size: 0.95rem;
  margin-bottom: 15px;
  line-height: 1.4;
}

.professor-expertise {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.professor-expertise span {
  background-color: #f0f7ff;
  color: #0052a5;
  padding: 3px 10px;
  border-radius: 15px;
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

.professor-expertise span:hover {
  background-color: #0066cc;
  color: white;
}

.professor-expertise a {
  background-color: #f0f7ff;
  color: #0052a5;
  padding: 3px 10px;
  border-radius: 15px;
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

/* Footer 樣式 */
.footer {
  background-color: #0052a5;
  color: white;
  padding: 50px 0 20px;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: space-between;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 15px;
}

.footer-logo img {
  height: 60px;
}

.footer-name h3 {
  font-size: 1.4rem;
  margin-bottom: 5px;
}

.footer-name h4 {
  font-size: 1.2rem;
  font-weight: 400;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-info p {
  margin-bottom: 10px;
  font-size: 1rem;
  display: flex;
  align-items: center;
}

.contact-info p i {
  margin-right: 10px;
  font-size: 1.1rem;
}

.copyright {
  margin-top: 20px;
  font-size: 0.9rem;
  opacity: 0.8;
}

/* RWD */
@media screen and (max-width: 768px) {
  .navbar-container {
    flex-direction: column;
    padding: 10px;
  }

  .navbar-menu {
    margin-top: 15px;
  }

  .navbar-item {
    margin-left: 15px;
    margin-right: 15px;
  }

  .banner {
    height: 200px;
  }

  .banner-overlay h2 {
    font-size: 1.8rem;
  }

  .banner-overlay p {
    font-size: 1rem;
  }

  section {
    padding: 40px 0;
  }

  .section-header h2 {
    font-size: 1.8rem;
  }

  .course-table th,
  .course-table td {
    padding: 12px 15px;
  }

  .course-table th {
    font-size: 1.1rem;
  }

  .year-cell {
    font-size: 1.1rem;
  }

  .course-list {
    gap: 6px 10px;
  }

  .course-list li {
    padding: 5px 10px;
    font-size: 0.9rem;
  }

  .footer {
    padding: 30px 0 20px;
  }

  .footer-content {
    flex-direction: column;
    gap: 30px;
  }

  .footer-logo img {
    height: 50px;
  }

  .footer-name h3 {
    font-size: 1.2rem;
  }

  .footer-name h4 {
    font-size: 1rem;
  }

  .category-header h3 {
    font-size: 1.1rem;
  }

  .elective-courses {
    padding: 15px;
    gap: 8px;
  }

  .elective-course {
    padding: 6px 12px;
    font-size: 0.9rem;
  }

  .faculty-content {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
  }

  .professor-image {
    height: 350px;
  }

  .professor-name {
    font-size: 1.2rem;
  }

  .professor-title {
    font-size: 1rem;
  }

  .professor-education {
    font-size: 0.9rem;
  }

  .professor-expertise span {
    font-size: 0.8rem;
    padding: 2px 8px;
  }
}