/* 全局樣式 */
:root {
  --primary-color: #4e73df;
  --secondary-color: #6c757d;
  --success-color: #1cc88a;
  --info-color: #36b9cc;
  --warning-color: #f6c23e;
  --danger-color: #e74a3b;
  --light-color: #f8f9fc;
  --dark-color: #5a5c69;
  --body-color: #f8f9fa;
  --text-color: #333;
  --border-radius: 0.35rem;
  --box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
  --transition: all 0.3s ease;
}

body {
  font-family: 'Noto Sans TC', sans-serif;
  color: var(--text-color);
  background-color: var(--body-color);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: #2e59d9;
  text-decoration: none;
}

/* 頁頭樣式 */
.header {
  position: relative;
}

.navbar {
  padding: 0.75rem 0;
  transition: var(--transition);
}

.navbar-spacer {
  height: 70px; /* 與導航欄高度相同 */
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
}

.navbar-light .navbar-nav .nav-link {
  color: rgba(0, 0, 0, 0.7);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.navbar-light .navbar-nav .nav-link:hover,
.navbar-light .navbar-nav .nav-item.active .nav-link {
  color: var(--primary-color);
  background-color: rgba(78, 115, 223, 0.05);
}

.dropdown-menu {
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
}

.dropdown-item {
  transition: var(--transition);
}

.dropdown-item:hover {
  background-color: rgba(78, 115, 223, 0.05);
  color: var(--primary-color);
}

/* 頁腳樣式 */
.footer {
  color: var(--secondary-color);
}

.footer-heading {
  font-weight: 600;
  color: var(--dark-color);
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-heading:after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 50px;
  height: 2px;
  background-color: var(--primary-color);
}

.footer-links a {
  color: var(--secondary-color);
  transition: var(--transition);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--primary-color);
  transform: translateX(5px);
}

.social-links {
  display: flex;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: #f8f9fa;
  color: var(--primary-color);
  transition: var(--transition);
}

.social-link:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-3px);
}

.copyright {
  font-size: 0.875rem;
  color: var(--secondary-color);
}

/* 回到頂部按鈕 */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 40px;
  height: 40px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: #2e59d9;
  color: white;
  transform: translateY(-3px);
}

/* 載入動畫 */
#loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(78, 115, 223, 0.1);
  border-radius: 50%;
  border-top: 4px solid var(--primary-color);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 響應式調整 */
@media (max-width: 991.98px) {
  .navbar-spacer {
    height: 60px;
  }
  
  .navbar-collapse {
    background-color: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-top: 0.5rem;
  }
  
  .navbar-nav .nav-item {
    margin-bottom: 0.5rem;
  }
}

@media (max-width: 767.98px) {
  .footer {
    text-align: center;
  }
  
  .footer-heading:after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .social-links {
    justify-content: center;
  }
  
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 35px;
    height: 35px;
  }
}

/* 按鈕樣式 */
.btn {
  border-radius: var(--border-radius);
  padding: 0.375rem 1.5rem;
  font-weight: 500;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: #2e59d9;
  border-color: #2e59d9;
}

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline-primary:hover {
  background-color: var(--primary-color);
  color: white;
}

/* 卡片樣式 */
.card {
  border: none;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
}

.card-img-top {
  height: 200px;
  object-fit: cover;
}

.card-title {
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.card-text {
  color: var(--secondary-color);
}

/* 表單樣式 */
.form-control {
  border-radius: var(--border-radius);
  padding: 0.75rem 1rem;
  border: 1px solid #e3e6f0;
  transition: var(--transition);
}

.form-control:focus {
  border-color: #bac8f3;
  box-shadow: 0 0 0 0.25rem rgba(78, 115, 223, 0.25);
}

.form-label {
  font-weight: 500;
  margin-bottom: 0.5rem;
}

/* 自定義動畫 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.slide-up {
  animation: slideUp 0.5s ease-in-out;
}

/* 首頁特定樣式 */
.hero-section {
  margin-top: -20px;
}

.section-title {
  position: relative;
  margin-bottom: 0.5rem;
}

.hover-card {
  transition: transform 0.3s ease;
}

.hover-card:hover {
  transform: translateY(-10px);
}

.feature-icon, .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: rgba(78, 115, 223, 0.1);
  color: var(--primary-color);
}

.step-number {
  font-size: 2rem;
  font-weight: bold;
}

.cta-section {
  border-radius: 0.5rem;
  margin: 2rem 0;
}