/*
 * Aimpact Academy Website Styles
 * 
 * 這個CSS文件包含了Aimpact Academy網站的所有樣式，
 * 包括響應式設計、現代UI元素和互動效果。
 * 
 * 結構：
 * 1. CSS變數和重置樣式
 * 2. 基礎樣式
 * 3. 導航欄
 * 4. 英雄區塊
 * 5. 課程相關樣式
 * 6. 購物車
 * 7. 表單樣式
 * 8. 頁腳
 * 9. 響應式設計
 * 10. 動畫和過渡效果
 */

/* ===== CSS變數 ===== */
:root {
  /* 色彩系統 */
  --primary-color: #1e3a8a;
  --primary-light: #3b82f6;
  --primary-dark: #1e40af;
  --secondary-color: #f59e0b;
  --secondary-light: #fbbf24;
  --secondary-dark: #d97706;
  
  /* 中性色 */
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* 狀態色 */
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  --info-color: #3b82f6;
  
  /* 字體 */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* 間距 */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  
  /* 陰影 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* 圓角 */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  
  /* 過渡 */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* 斷點 */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* ===== 重置樣式 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--white);
  overflow-x: hidden;
}

/* ===== 基礎樣式 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--spacing-8);
  }
}

/* 標題樣式 */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-4);
  color: var(--gray-900);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

/* 段落樣式 */
p {
  margin-bottom: var(--spacing-4);
  color: var(--gray-600);
}

/* 連結樣式 */
a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-light);
}

/* 列表樣式 */
ul, ol {
  margin-bottom: var(--spacing-4);
}

li {
  margin-bottom: var(--spacing-2);
}

/* 圖片樣式 */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== 按鈕樣式 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:focus {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--secondary-color);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--secondary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--primary-color);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: var(--white);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ===== 導航欄 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-3) var(--spacing-4);
  max-width: 1200px;
  margin: 0 auto;
  height: 60px;
}

.nav-logo a {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.nav-logo i {
  font-size: var(--font-size-2xl);
}

.nav-menu {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-8);
}

.nav-link {
  font-weight: 500;
  color: var(--gray-700);
  padding: var(--spacing-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--secondary-color);
  border-radius: var(--radius-sm);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.cart-btn {
  position: relative;
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--gray-700);
  cursor: pointer;
  padding: var(--spacing-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.cart-btn:hover {
  color: var(--primary-color);
  background-color: var(--gray-100);
}

.cart-count {
  position: absolute;
  top: -5px;
  right: -5px;
  background-color: var(--secondary-color);
  color: var(--white);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 50%;
  min-width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn {
  display: block;
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--gray-700);
  cursor: pointer;
  padding: var(--spacing-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-menu-btn:hover {
  color: var(--primary-color);
  background-color: var(--gray-100);
}

/* 行動選單樣式 */
@media (max-width: 767px) {
  /* 行動選單背景遮罩 */
  .mobile-menu-overlay {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all var(--transition-normal);
  }
  
  .mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  
  .nav-menu {
    display: block !important; /* 強制顯示在行動模式下 */
    position: fixed !important;
    top: 80px !important;
    left: 0 !important;
    right: 0 !important;
    background-color: var(--white) !important;
    box-shadow: var(--shadow-xl) !important;
    padding: var(--spacing-6) !important;
    transform: translateY(-100%) !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all var(--transition-normal) !important;
    z-index: 1001 !important; /* 確保在導航欄之上 */
    border-top: 1px solid var(--gray-200) !important;
    max-height: calc(100vh - 80px) !important;
    overflow-y: auto !important;
  }
  
  .nav-menu.active {
    transform: translateY(0) !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
  
  .nav-menu li {
    margin: 0;
    border-bottom: 1px solid var(--gray-100);
    opacity: 0;
    transform: translateX(-20px);
    transition: all var(--transition-normal);
  }
  
  .nav-menu.active li {
    opacity: 1;
    transform: translateX(0);
  }
  
  .nav-menu li:nth-child(1) { transition-delay: 0.1s; }
  .nav-menu li:nth-child(2) { transition-delay: 0.2s; }
  .nav-menu li:nth-child(3) { transition-delay: 0.3s; }
  .nav-menu li:nth-child(4) { transition-delay: 0.4s; }
  
  .nav-menu li:last-child {
    border-bottom: none;
  }
  
  .nav-link {
    display: block;
    padding: var(--spacing-4) 0;
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--gray-700);
    transition: all var(--transition-fast);
    position: relative;
  }
  
  .nav-link:hover,
  .nav-link.active {
    color: var(--primary-color);
    padding-left: var(--spacing-2);
  }
  
  .nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-fast);
    transform: translateY(-50%);
  }
  
  .nav-link:hover::before,
  .nav-link.active::before {
    width: 4px;
  }
  
  /* 行動選單按鈕動畫 */
  .mobile-menu-btn {
    transition: all var(--transition-fast);
  }
  
  .mobile-menu-btn:hover {
    transform: scale(1.1);
  }
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: none;
  }
}



/* 平板電腦和中等螢幕的 Hero 調整 */
@media (min-width: 768px) and (max-width: 1023px) {
  .hero-content {
    text-align: center;
    padding: 0 var(--spacing-6);
  }
  
  .hero-title {
    font-size: 2.8rem;
    line-height: 1.2;
    margin-bottom: var(--spacing-5);
    word-wrap: break-word;
    overflow-wrap: break-word;
  }
  
  .hero-subtitle {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-7);
  }
  
  .hero-buttons {
    flex-direction: row;
    justify-content: center;
    gap: var(--spacing-4);
  }
  
  .btn {
    width: auto;
    min-width: 200px;
  }
  
  .hero-visual {
    margin-top: var(--spacing-8);
  }
  
  .ai-animation {
    transform: scale(0.9);
  }
}

/* ===== 英雄區塊 ===== */
.hero {
  padding: calc(60px + var(--spacing-20)) 0 var(--spacing-20);
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - 60px);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e2e8f0" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-12);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  text-align: center;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-6);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* 支援子站 Hero 的漸層文字與動畫視覺 */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  margin-bottom: var(--spacing-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  align-items: center;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 子站使用的視覺容器命名 */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.anim {
  will-change: transform, opacity;
  opacity: 0;
}

.anim.in-view {
  opacity: 1;
}

/* ZoomInDown 動畫 */
@keyframes zoomInDown {
  0% {
    opacity: 0;
    transform: translate3d(0, -60px, 0) scale(0.9);
  }
  60% {
    opacity: 1;
    transform: translate3d(0, 10px, 0) scale(1.02);
  }
  100% {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
  }
}

.anim-zoom-in-down.in-view {
  animation: zoomInDown var(--anim-duration, 700ms) var(--anim-timing, cubic-bezier(0.2, 0.7, 0.3, 1)) var(--anim-delay, 0ms) both;
}

@media (prefers-reduced-motion: reduce) {
  .anim,
  .anim.in-view,
  .anim-zoom-in-down.in-view {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

.hero-graphic {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--white);
  box-shadow: var(--shadow-xl);
  animation: float 3s ease-in-out infinite;
}

/* 子站 AI 波紋動畫 */
.ai-animation {
  position: relative;
  width: 300px;
  height: 300px;
}

.ai-circle {
  position: absolute;
  border: 2px solid var(--primary-light);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.ai-circle:nth-child(1) {
  width: 100px;
  height: 100px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 0s;
}

.ai-circle:nth-child(2) {
  width: 150px;
  height: 150px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 0.5s;
}

.ai-circle:nth-child(3) {
  width: 200px;
  height: 200px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 1s;
}

@keyframes pulse {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1.1);
  }
  100% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--font-size-5xl);
  }
  
  .hero-buttons {
    flex-direction: row;
    justify-content: center;
  }
}

@media (min-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr 1fr;
    text-align: left;
  }
  
  .hero-content {
    text-align: left;
  }
  
  .hero-subtitle {
    margin-left: 0;
    margin-right: 0;
  }
  
  .hero-buttons {
    justify-content: flex-start;
  }
  
  .hero-graphic {
    width: 300px;
    height: 300px;
    font-size: 6rem;
  }
}

/* ===== 區塊樣式 ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.section-header h2 {
  margin-bottom: var(--spacing-4);
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

.section-footer {
  text-align: center;
  margin-top: var(--spacing-12);
}

/* ===== 特色課程 ===== */
.featured-courses {
  padding: var(--spacing-20) 0;
  background-color: var(--white);
}

.courses-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-6);
  padding: var(--spacing-4);
}

@media (min-width: 768px) {
  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
  }
}

@media (min-width: 1024px) {
  .courses-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-8);
  }
}

.course-card {
  background-color: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid var(--gray-200);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.course-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.course-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="40" r="1.5" fill="rgba(255,255,255,0.1)"/><circle cx="40" cy="80" r="1" fill="rgba(255,255,255,0.1)"/></svg>');
}

.course-content {
  padding: var(--spacing-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.course-category {
  display: inline-block;
  background-color: var(--secondary-color);
  color: var(--white);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.course-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-3);
  color: var(--gray-900);
  line-height: 1.3;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.course-description {
  color: var(--gray-600);
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  flex: 1;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.course-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-sm);
  color: var(--gray-500);
  flex-wrap: wrap;
  gap: var(--spacing-2);
}

.course-rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.course-rating .stars {
  color: var(--secondary-color);
}

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  flex-wrap: wrap;
  gap: var(--spacing-2);
}

.course-price {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-color);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-1);
}

.course-price .original-price {
  font-size: var(--font-size-sm);
  color: var(--gray-400);
  text-decoration: line-through;
  order: -1;
}

.course-price .discount {
  font-size: var(--font-size-xs);
  color: var(--secondary-color);
  font-weight: 600;
}

.add-to-cart-btn {
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  min-width: fit-content;
}

/* ===== 關於我們 ===== */
.about {
  padding: var(--spacing-20) 0;
  background-color: var(--gray-50);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-12);
  align-items: center;
}

.about-text h2 {
  margin-bottom: var(--spacing-8);
}

.slogan-section {
  margin-bottom: var(--spacing-12);
  text-align: center;
  position: relative;
}

.slogan {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
  padding: var(--spacing-6);
  position: relative;
  display: inline-block;
  animation: sloganGlow 3s ease-in-out infinite;
}

.slogan::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(245, 158, 11, 0.1));
  border-radius: var(--radius-2xl);
  z-index: -1;
  transform: scale(1.1);
  animation: sloganPulse 3s ease-in-out infinite;
}

@keyframes sloganGlow {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.2); }
}

@keyframes sloganPulse {
  0%, 100% { transform: scale(1.1); opacity: 0.3; }
  50% { transform: scale(1.2); opacity: 0.5; }
}

.mission-vision-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-10);
  position: relative;
}

.mission-vision-grid::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 2px;
  height: 80%;
  background: linear-gradient(to bottom, transparent, var(--secondary-color), transparent);
  transform: translate(-50%, -50%);
  z-index: 1;
}

@media (min-width: 768px) {
  .mission-vision-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .mission-vision-grid::before {
    display: block;
  }
}

.mission-card,
.vision-card {
  background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
  padding: var(--spacing-8);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  border: 2px solid transparent;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.mission-card::before,
.vision-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.mission-card:hover::before,
.vision-card:hover::before {
  transform: scaleX(1);
}

.mission-card:hover,
.vision-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-2xl);
  border-color: var(--gray-200);
}

.mission-card .card-icon {
  background: linear-gradient(135deg, var(--success-color), #059669);
  width: 80px;
  height: 80px;
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-6);
  position: relative;
  overflow: hidden;
}

.mission-card .card-icon::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(45deg);
  transition: transform var(--transition-normal);
}

.mission-card:hover .card-icon::before {
  transform: rotate(45deg) translate(50%, 50%);
}

.vision-card .card-icon {
  background: linear-gradient(135deg, var(--info-color), #1d4ed8);
  width: 80px;
  height: 80px;
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-6);
  position: relative;
  overflow: hidden;
}

.vision-card .card-icon::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(45deg);
  transition: transform var(--transition-normal);
}

.vision-card:hover .card-icon::before {
  transform: rotate(45deg) translate(50%, 50%);
}

.mission-card h3,
.vision-card h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
  color: var(--gray-900);
  position: relative;
}

.mission-card h3::after,
.vision-card h3::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
  border-radius: var(--radius-sm);
}

.mission-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-6) 0 0 0;
}

.mission-list li {
  position: relative;
  padding: var(--spacing-3) var(--spacing-4) var(--spacing-3) var(--spacing-8);
  margin-bottom: var(--spacing-3);
  color: var(--gray-700);
  background: var(--white);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--success-color);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.mission-list li:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
  background: var(--gray-50);
}

.mission-list li::before {
  content: '✓';
  position: absolute;
  left: var(--spacing-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--success-color);
  font-weight: bold;
  font-size: var(--font-size-lg);
  background: var(--white);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.vision-card p {
  color: var(--gray-600);
  line-height: 1.7;
  font-size: var(--font-size-lg);
  margin-top: var(--spacing-4);
}

.about-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-graphic {
  width: 250px;
  height: 250px;
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  color: var(--white);
  box-shadow: var(--shadow-xl);
  transform: rotate(5deg);
  transition: transform var(--transition-normal);
}

.about-graphic:hover {
  transform: rotate(0deg);
}

@media (min-width: 1024px) {
  .about-content {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== 方法論 ===== */
.methodology {
  padding: var(--spacing-20) 0;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.methodology-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
}

@media (min-width: 768px) {
  .methodology-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .methodology-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.methodology-card {
  background-color: var(--white);
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all var(--transition-normal);
  border: 1px solid var(--gray-200);
}

.methodology-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.card-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
  color: var(--white);
  margin: 0 auto var(--spacing-6);
  box-shadow: var(--shadow-lg);
}

.methodology-card h3 {
  margin-bottom: var(--spacing-4);
  color: var(--gray-900);
}

.methodology-card p {
  color: var(--gray-600);
  margin-bottom: 0;
}

/* ===== 子站方法論樣式 ===== */
.methodology-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 1023px) {
  .methodology-content {
    grid-template-columns: 1fr;
  }
}

.methodology-text h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #1f2937;
}

.methodology-text p {
  font-size: 1.125rem;
  color: #6b7280;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.feature-item i {
  color: #10b981;
  font-size: 1.25rem;
}

.feature-item span {
  font-weight: 500;
  color: #1f2937;
}

.methodology-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.floating-elements {
  position: relative;
  width: 300px;
  height: 300px;
}

.floating-element {
  position: absolute;
  background: linear-gradient(135deg, #3b82f6, #1e3a8a);
  color: white;
  padding: 12px 20px;
  border-radius: 25px;
  font-weight: 600;
  animation: float 3s ease-in-out infinite;
}

.floating-element:nth-child(1) {
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.floating-element:nth-child(2) {
  top: 10%;
  right: 20%;
  animation-delay: 0.5s;
}

.floating-element:nth-child(3) {
  bottom: 30%;
  left: 20%;
  animation-delay: 1s;
}

.floating-element:nth-child(4) {
  bottom: 20%;
  right: 10%;
  animation-delay: 1.5s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* ===== 教學理念 ===== */
.teaching-philosophy {
  padding: var(--spacing-20) 0;
  background-color: var(--white);
}

.philosophy-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-12);
  align-items: start;
}

@media (min-width: 1024px) {
  .philosophy-content {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.philosophy-text h2 {
  margin-bottom: var(--spacing-8);
}

.philosophy-section {
  margin-bottom: var(--spacing-8);
}

.philosophy-section h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
  border-left: 3px solid var(--secondary-color);
  padding-left: var(--spacing-4);
}

.philosophy-section p {
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: var(--spacing-6);
}

.learning-examples {
  display: grid;
  gap: var(--spacing-4);
  margin-top: var(--spacing-4);
}

.example-item {
  display: flex;
  gap: var(--spacing-4);
  align-items: flex-start;
  padding: var(--spacing-4);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--primary-color);
}

.example-item i {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
  margin-top: var(--spacing-1);
  flex-shrink: 0;
}

.example-item h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-2);
}

.example-item p {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  margin-bottom: 0;
  line-height: 1.5;
}

.philosophy-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.steam-elements {
  position: relative;
  width: 300px;
  height: 300px;
}

.steam-element {
  position: absolute;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: var(--white);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  animation: steamFloat 4s ease-in-out infinite;
}

.steam-element.science {
  top: 10%;
  left: 20%;
  animation-delay: 0s;
  background: linear-gradient(135deg, #ef4444, #dc2626);
}

.steam-element.technology {
  top: 60%;
  right: 15%;
  animation-delay: 0.8s;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

.steam-element.engineering {
  bottom: 20%;
  left: 10%;
  animation-delay: 1.6s;
  background: linear-gradient(135deg, #10b981, #059669);
}

.steam-element.arts {
  top: 40%;
  right: 25%;
  animation-delay: 2.4s;
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.steam-element.math {
  bottom: 50%;
  left: 50%;
  transform: translateX(-50%);
  animation-delay: 3.2s;
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

@keyframes steamFloat {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  25% {
    transform: translateY(-10px) rotate(2deg);
  }
  50% {
    transform: translateY(-20px) rotate(0deg);
  }
  75% {
    transform: translateY(-10px) rotate(-2deg);
  }
}

/* ===== 頁面標題 ===== */
.page-header {
  padding: calc(80px + var(--spacing-20)) 0 var(--spacing-16);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: var(--white);
  text-align: center;
}

.page-header h1 {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: var(--spacing-6);
  color: var(--white);
}

.page-header p {
  font-size: var(--font-size-xl);
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 聯絡我們 ===== */
.contact {
  padding: var(--spacing-20) 0;
  background-color: var(--gray-50);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-12);
}

.contact-methods {
  display: grid;
  gap: var(--spacing-6);
  margin-top: var(--spacing-8);
}

.contact-method {
  display: flex;
  gap: var(--spacing-4);
  align-items: center;
}

.contact-method i {
  font-size: var(--font-size-xl);
  color: var(--secondary-color);
  width: 24px;
  flex-shrink: 0;
}

.contact-method h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-1);
  color: var(--gray-900);
}

.contact-method p {
  color: var(--gray-600);
  margin-bottom: 0;
}

.contact-form {
  background-color: var(--white);
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 1024px) {
  .contact-content {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== 表單樣式 ===== */
.form-group {
  margin-bottom: var(--spacing-6);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
}

@media (min-width: 768px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group label {
  display: block;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: var(--spacing-2);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
  background-color: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ===== 聯絡資訊卡片 ===== */
.contact-info-section {
  padding: var(--spacing-20) 0;
  background-color: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-8);
}

.contact-card {
  background: var(--white);
  padding: var(--spacing-6);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  text-align: center;
  transition: all var(--transition-normal);
}

.contact-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.contact-card .contact-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-4);
  font-size: var(--font-size-2xl);
  color: var(--white);
}

.contact-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-3);
  color: var(--gray-900);
}

.contact-card p {
  color: var(--gray-600);
  margin-bottom: var(--spacing-2);
}

.contact-card .contact-note {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
  font-style: italic;
}

/* ===== 聯絡表單區塊 ===== */
.contact-form-section {
  padding: var(--spacing-20) 0;
  background-color: var(--gray-50);
}

.contact-features {
  display: grid;
  gap: var(--spacing-3);
  margin-top: var(--spacing-6);
}

.contact-features .feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.contact-features .feature-item i {
  color: var(--success-color);
  font-size: var(--font-size-lg);
}

.contact-features .feature-item span {
  color: var(--gray-700);
  font-weight: 500;
}

/* ===== 複選框樣式 ===== */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--gray-600);
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-color);
}

/* ===== FAQ 區塊 ===== */
.faq-section {
  padding: var(--spacing-20) 0;
  background-color: var(--white);
}

.faq-grid {
  display: grid;
  gap: var(--spacing-6);
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-6);
  background: var(--gray-50);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.faq-question:hover {
  background: var(--gray-100);
}

.faq-question h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 0;
}

.faq-question i {
  color: var(--gray-500);
  transition: transform var(--transition-fast);
}

.faq-answer {
  padding: 0 var(--spacing-6) var(--spacing-6);
  color: var(--gray-600);
  line-height: 1.6;
}

/* ===== 地圖區塊 ===== */
.map-section {
  padding: var(--spacing-20) 0;
  background-color: var(--gray-50);
}

.map-container {
  max-width: 800px;
  margin: 0 auto;
}

.map-placeholder {
  background: var(--white);
  padding: var(--spacing-12);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
}

.map-placeholder i {
  font-size: 4rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-4);
}

.map-placeholder h3 {
  font-size: var(--font-size-xl);
  color: var(--gray-900);
  margin-bottom: var(--spacing-3);
}

.map-placeholder p {
  color: var(--gray-600);
  margin-bottom: var(--spacing-6);
}

.transport-info {
  display: grid;
  gap: var(--spacing-4);
  margin-top: var(--spacing-6);
}

.transport-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  justify-content: center;
}

.transport-item i {
  font-size: var(--font-size-lg);
  color: var(--secondary-color);
}

.transport-item span {
  color: var(--gray-700);
  font-weight: 500;
}

/* ===== 團隊介紹 ===== */
.team {
  padding: var(--spacing-20) 0;
  background-color: var(--white);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-8);
  margin-top: var(--spacing-12);
}

.team-member {
  background: var(--white);
  padding: var(--spacing-6);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  text-align: center;
  transition: all var(--transition-normal);
}

.team-member:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.member-avatar {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-4);
  font-size: var(--font-size-3xl);
  color: var(--white);
}

.team-member h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-2);
  color: var(--gray-900);
}

.member-title {
  font-size: var(--font-size-base);
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: var(--spacing-4);
}

.member-description {
  color: var(--gray-600);
  line-height: 1.6;
}

/* ===== 頁腳 ===== */
.footer {
  background-color: var(--gray-900);
  color: var(--gray-300);
  padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-8);
}

.footer-section h4 {
  color: var(--white);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-4);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--spacing-4);
}

.footer-logo i {
  font-size: var(--font-size-2xl);
  color: var(--secondary-color);
}

.footer-section p {
  margin-bottom: var(--spacing-6);
  color: var(--gray-400);
}

.footer-section ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-section ul li {
  margin-bottom: var(--spacing-2);
}

.footer-section ul li a {
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
  color: var(--white);
}

.social-links {
  display: flex;
  gap: var(--spacing-4);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--gray-800);
  color: var(--gray-400);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.social-links a:hover {
  background-color: var(--secondary-color);
  color: var(--white);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--spacing-8);
  text-align: center;
  color: var(--gray-500);
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-content {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

/* ===== 購物車側邊欄 ===== */
.cart-sidebar {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  height: 100vh;
  background-color: var(--white);
  box-shadow: var(--shadow-xl);
  z-index: 1100;
  transition: right var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.cart-sidebar.open {
  right: 0;
}

.cart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--gray-200);
}

.cart-header h3 {
  margin: 0;
  color: var(--gray-900);
}

.cart-close {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--gray-500);
  cursor: pointer;
  padding: var(--spacing-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.cart-close:hover {
  color: var(--gray-700);
  background-color: var(--gray-100);
}

.cart-content {
  flex: 1;
  padding: var(--spacing-6);
  overflow-y: auto;
}

.cart-empty {
  text-align: center;
  padding: var(--spacing-12) 0;
  color: var(--gray-500);
}

.cart-empty i {
  font-size: 3rem;
  margin-bottom: var(--spacing-4);
  color: var(--gray-300);
}

.cart-item {
  display: flex;
  gap: var(--spacing-4);
  padding: var(--spacing-4) 0;
  border-bottom: 1px solid var(--gray-200);
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-item-image {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.cart-item-details {
  flex: 1;
}

.cart-item-title {
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-1);
  font-size: var(--font-size-sm);
}

.cart-item-price {
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: var(--spacing-2);
}

.cart-item-time {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--gray-600);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-2);
}

.cart-item-time i {
  color: var(--primary-color);
}

.cart-item-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.quantity-btn {
  background-color: var(--gray-100);
  border: none;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.quantity-btn:hover {
  background-color: var(--gray-200);
}

.quantity {
  font-weight: 600;
  min-width: 20px;
  text-align: center;
}

.remove-btn {
  background: none;
  border: none;
  color: var(--error-color);
  cursor: pointer;
  padding: var(--spacing-1);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.remove-btn:hover {
  background-color: rgba(239, 68, 68, 0.1);
}

.cart-footer {
  padding: var(--spacing-6);
  border-top: 1px solid var(--gray-200);
}

.cart-total {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
  text-align: center;
}

.cart-checkout {
  width: 100%;
}

.cart-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.cart-overlay.open {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 480px) {
  .navbar {
    height: 60px !important;
  }
  
  .nav-container {
    height: 60px !important;
    padding: var(--spacing-2) var(--spacing-4) !important;
  }
  
  .cart-sidebar {
    width: 100vw;
    right: -100vw;
  }
  
  .hero {
    padding: calc(60px + var(--spacing-12)) 0 var(--spacing-12);
    min-height: calc(100vh - 60px);
    display: flex;
    align-items: center;
  }
  
  .hero-content {
    padding: 0 var(--spacing-2);
    max-width: 100%;
    overflow: visible;
  }
  
  .hero-title {
    font-size: 2rem;
    line-height: 1.3;
    margin-bottom: var(--spacing-3);
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    white-space: normal;
    max-width: 100%;
    overflow: visible;
  }
  
  .hero-title .gradient-text {
    display: block !important;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: none !important;
    overflow: visible !important;
    visibility: visible !important;
    opacity: 1 !important;
    text-overflow: clip !important;
    white-space: normal !important;
    font-size: 2rem !important;
    line-height: 1.3 !important;
    text-align: center !important;
  }
  
  .hero-subtitle {
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-5);
    padding: 0;
  }
  
  .hero-buttons {
    gap: var(--spacing-3);
  }
  
  .btn {
    font-size: 0.95rem;
    padding: var(--spacing-3) var(--spacing-4);
  }
  
  .hero-visual {
    margin-top: var(--spacing-4);
  }
  
  .ai-animation {
    transform: scale(0.6);
  }
}

/* 超小螢幕調整 */
@media (max-width: 320px) {
  .navbar {
    height: 60px !important;
  }
  
  .nav-container {
    height: 60px !important;
    padding: var(--spacing-2) var(--spacing-4) !important;
  }
  
  .hero-title {
    font-size: 2rem;
    line-height: 1.3;
    margin-bottom: var(--spacing-2);
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: normal;
    max-width: 100%;
    overflow: visible;
  }
  
  .hero-title .gradient-text {
    display: block !important;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: none !important;
    overflow: visible !important;
    visibility: visible !important;
    opacity: 1 !important;
    text-overflow: clip !important;
    white-space: normal !important;
    font-size: 2rem !important;
    line-height: 1.3 !important;
    text-align: center !important;
  }
  
  .hero-subtitle {
    font-size: 0.9rem;
    line-height: 1.5;
  }
  
  .hero {
    padding: calc(60px + var(--spacing-8)) 0 var(--spacing-8);
    min-height: calc(100vh - 60px);
    display: flex;
    align-items: center;
  }
  
  .hero-content {
    padding: 0 var(--spacing-1);
    max-width: 100%;
    overflow: visible;
  }
  
  .btn {
    font-size: 0.9rem;
    padding: var(--spacing-2) var(--spacing-3);
  }
}

/* ===== 通知訊息 ===== */
.notification {
  position: fixed;
  top: 100px;
  right: var(--spacing-6);
  background-color: var(--success-color);
  color: var(--white);
  padding: var(--spacing-4) var(--spacing-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1200;
  transform: translateX(400px);
  transition: transform var(--transition-normal);
}

.notification.show {
  transform: translateX(0);
}

.notification-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.notification i {
  font-size: var(--font-size-lg);
}

/* ===== 課程頁面樣式 ===== */
.page-header {
  padding: calc(80px + var(--spacing-12)) 0 var(--spacing-12);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: var(--white);
  text-align: center;
}

.page-header-content h1 {
  color: var(--white);
  margin-bottom: var(--spacing-4);
}

.page-header-content p {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 0;
}

.courses-section {
  padding: var(--spacing-16) 0;
  background-color: var(--gray-50);
}

.courses-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
}

@media (min-width: 1024px) {
  .courses-layout {
    grid-template-columns: 300px 1fr;
  }
}

/* 篩選器樣式 */
.courses-filters {
  background-color: var(--white);
  padding: var(--spacing-6);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  height: fit-content;
  position: sticky;
  top: 100px;
}

.filter-section {
  margin-bottom: var(--spacing-8);
}

.filter-section:last-child {
  margin-bottom: 0;
}

.filter-section h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-4);
  color: var(--gray-900);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.filter-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  cursor: pointer;
  padding: var(--spacing-2);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.filter-option:hover {
  background-color: var(--gray-50);
}

.filter-option input {
  margin: 0;
}

.filter-option .checkmark {
  font-weight: 500;
  color: var(--gray-700);
}

.filter-reset {
  width: 100%;
  margin-top: var(--spacing-4);
}

/* 課程內容區域 */
.courses-content {
  background-color: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.courses-toolbar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--gray-200);
  background-color: var(--gray-50);
}

@media (min-width: 768px) {
  .courses-toolbar {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 400px;
}

.search-box i {
  position: absolute;
  left: var(--spacing-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
}

.search-box input {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4) var(--spacing-3) calc(var(--spacing-4) + 24px);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.sort-options {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.sort-options label {
  font-weight: 500;
  color: var(--gray-700);
}

.sort-options select {
  padding: var(--spacing-2) var(--spacing-4);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  background-color: var(--white);
  cursor: pointer;
}

.courses-stats {
  padding: var(--spacing-4) var(--spacing-6);
  color: var(--gray-600);
  font-size: var(--font-size-sm);
  border-bottom: 1px solid var(--gray-200);
}

/* 課程頁面的課程網格樣式 */
.courses-content .courses-grid {
  padding: var(--spacing-6);
  gap: var(--spacing-6);
}

@media (min-width: 768px) {
  .courses-content .courses-grid {
    gap: var(--spacing-8);
  }
}

@media (min-width: 1024px) {
  .courses-content .courses-grid {
    gap: var(--spacing-8);
  }
}

.load-more-section {
  text-align: center;
  padding: var(--spacing-6);
  border-top: 1px solid var(--gray-200);
}

/* 行動版篩選器 */
.mobile-filter-btn {
  position: fixed;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  background-color: var(--secondary-color);
  color: var(--white);
  border: none;
  padding: var(--spacing-4);
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  display: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mobile-filter-btn:hover {
  transform: scale(1.1);
}

@media (max-width: 1023px) {
  .mobile-filter-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .courses-filters {
    display: none;
  }
}

.mobile-filters {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--white);
  z-index: 1100;
  transform: translateY(100%);
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.mobile-filters.open {
  transform: translateY(0);
}

.mobile-filters-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--gray-200);
}

.mobile-filters-close {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--gray-500);
  cursor: pointer;
  padding: var(--spacing-2);
}

.mobile-filters-content {
  flex: 1;
  padding: var(--spacing-6);
  overflow-y: auto;
}

.mobile-filters-footer {
  padding: var(--spacing-6);
  border-top: 1px solid var(--gray-200);
}

/* ===== 結帳頁面樣式 ===== */
.checkout-progress {
  padding: calc(80px + var(--spacing-8)) 0 var(--spacing-8);
  background-color: var(--gray-50);
}

.progress-steps {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-8);
  max-width: 600px;
  margin: 0 auto;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2);
  position: relative;
}

.step::after {
  content: '';
  position: absolute;
  top: 20px;
  left: 100%;
  width: var(--spacing-8);
  height: 2px;
  background-color: var(--gray-300);
  z-index: 1;
}

.step:last-child::after {
  display: none;
}

.step.completed::after,
.step.active::after {
  background-color: var(--secondary-color);
}

.step-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--gray-300);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  position: relative;
  z-index: 2;
}

.step.completed .step-icon,
.step.active .step-icon {
  background-color: var(--secondary-color);
}

.step span {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-600);
}

.step.completed span,
.step.active span {
  color: var(--gray-900);
}

.checkout-section {
  padding: var(--spacing-16) 0;
  background-color: var(--white);
}

.checkout-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-12);
}

@media (min-width: 1024px) {
  .checkout-layout {
    grid-template-columns: 1fr 400px;
  }
}

/* 訂單摘要 */
.order-summary {
  background-color: var(--gray-50);
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  height: fit-content;
  position: sticky;
  top: 100px;
}

.order-summary h2 {
  margin-bottom: var(--spacing-6);
  color: var(--gray-900);
}

.order-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-4) 0;
  border-bottom: 1px solid var(--gray-200);
}

.order-item:last-child {
  border-bottom: none;
}

.order-item-info h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-1);
  color: var(--gray-900);
}

.order-item-info p {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  margin-bottom: 0;
}

.order-item-price {
  font-weight: 600;
  color: var(--primary-color);
}

.order-totals {
  margin-top: var(--spacing-6);
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--gray-200);
}

.total-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-3);
  color: var(--gray-600);
}

.total-final {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--gray-900);
  padding-top: var(--spacing-3);
  border-top: 1px solid var(--gray-300);
}

.promo-code {
  margin-top: var(--spacing-6);
}

.promo-input {
  display: flex;
  gap: var(--spacing-2);
}

.promo-input input {
  flex: 1;
  padding: var(--spacing-2) var(--spacing-3);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

.promo-input button {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
}

/* 結帳表單 */
.checkout-form {
  background-color: var(--white);
}

.checkout-form h2 {
  margin-bottom: var(--spacing-8);
  color: var(--gray-900);
}

.form-section {
  margin-bottom: var(--spacing-10);
  padding-bottom: var(--spacing-8);
  border-bottom: 1px solid var(--gray-200);
}

.form-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.form-section h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-6);
  color: var(--gray-900);
}

/* 付款方式 */
.payment-methods {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-6);
}

@media (min-width: 768px) {
  .payment-methods {
    grid-template-columns: repeat(3, 1fr);
  }
}

.payment-option {
  cursor: pointer;
}

.payment-option input {
  display: none;
}

.payment-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  text-align: center;
}

.payment-option input:checked + .payment-card {
  border-color: var(--primary-color);
  background-color: rgba(59, 130, 246, 0.05);
}

.payment-card i {
  font-size: var(--font-size-2xl);
  color: var(--gray-600);
}

.payment-option input:checked + .payment-card i {
  color: var(--primary-color);
}

.payment-card span {
  font-weight: 500;
  color: var(--gray-700);
}

.credit-card-form {
  margin-top: var(--spacing-6);
  padding: var(--spacing-6);
  background-color: var(--gray-50);
  border-radius: var(--radius-lg);
}

/* 複選框樣式 */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.checkbox-option {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  cursor: pointer;
}

.checkbox-option input {
  margin: 0;
  margin-top: 2px;
}

.checkbox-option .checkmark {
  color: var(--gray-700);
  line-height: 1.5;
}

.checkbox-option a {
  color: var(--primary-color);
  text-decoration: underline;
}

/* 表單動作 */
.form-actions {
  display: flex;
  gap: var(--spacing-4);
  justify-content: flex-end;
  margin-top: var(--spacing-8);
}

@media (max-width: 768px) {
  .form-actions {
    flex-direction: column;
  }
}

/* ===== 模態框樣式 ===== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal.open {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  text-align: center;
  padding: var(--spacing-8) var(--spacing-6) var(--spacing-4);
}

.success-icon {
  width: 80px;
  height: 80px;
  background-color: var(--success-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-4);
  font-size: var(--font-size-3xl);
  color: var(--white);
}

.modal-header h2 {
  color: var(--gray-900);
  margin-bottom: 0;
}

.modal-body {
  padding: 0 var(--spacing-6) var(--spacing-4);
  text-align: center;
}

.order-info {
  background-color: var(--gray-50);
  padding: var(--spacing-4);
  border-radius: var(--radius-lg);
  margin: var(--spacing-4) 0;
}

.order-info p {
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
}

.order-info p:last-child {
  margin-bottom: 0;
}

.modal-footer {
  display: flex;
  gap: var(--spacing-4);
  padding: var(--spacing-4) var(--spacing-6) var(--spacing-8);
}

@media (max-width: 768px) {
  .modal-footer {
    flex-direction: column;
  }
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1190;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* ===== 載入指示器 ===== */
.loading-spinner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1300;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.loading-spinner.show {
  opacity: 1;
  visibility: visible;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--gray-200);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-4);
}

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

.loading-spinner p {
  color: var(--gray-600);
  font-weight: 500;
}

/* ===== 響應式設計 ===== */

/* 強制顯示 Hero 標題文字 */
@media (max-width: 767px) {
  .navbar {
    height: 60px !important;
  }
  
  .nav-container {
    height: 60px !important;
    padding: var(--spacing-2) var(--spacing-4) !important;
  }
  
  .hero-title,
  .hero-title * {
    visibility: visible !important;
    opacity: 1 !important;
    max-width: none !important;
    overflow: visible !important;
    text-overflow: clip !important;
    white-space: normal !important;
    line-height: 1.2 !important;
  }
  
  .hero-title .gradient-text {
    display: block !important;
    text-align: center !important;
  }
  
  .hero-container,
  .hero-content {
    max-width: 100% !important;
    overflow: visible !important;
    padding-top: 20px !important;
  }
  
  /* 確保 Hero 內容必定顯示 */
  .hero {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-height: calc(100vh - 60px) !important;
    padding-top: 60px !important;
  }
  
  .hero-container {
    width: 100% !important;
    max-width: 100% !important;
  }
  
  /* 確保 Leverage 文字不被截斷 */
  .hero-title .gradient-text {
    font-size: 2rem !important;
    line-height: 1.3 !important;
    margin-bottom: 0.5rem !important;
    display: block !important;
    text-align: center !important;
  }
}

@media (max-width: 767px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
  }
  
  .hero {
    padding: calc(60px + var(--spacing-16)) 0 var(--spacing-16);
    text-align: center;
    min-height: calc(100vh - 60px);
    display: flex;
    align-items: center;
  }
  
  .hero-content {
    text-align: center;
    padding: 0 var(--spacing-4);
    max-width: 100%;
    overflow: visible;
  }
  
  .hero-title {
    font-size: 2rem;
    line-height: 1.3;
    margin-bottom: var(--spacing-4);
    text-align: center;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    white-space: normal;
    max-width: 100%;
    overflow: visible;
  }
  
  .hero-title .gradient-text {
    display: block !important;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: none !important;
    overflow: visible !important;
    visibility: visible !important;
    opacity: 1 !important;
    text-overflow: clip !important;
    white-space: normal !important;
    font-size: 2rem !important;
    line-height: 1.3 !important;
    text-align: center !important;
  }
  

  
  .hero-subtitle {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-6);
    text-align: center;
    padding: 0 var(--spacing-2);
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero-visual {
    margin-top: var(--spacing-6);
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .ai-animation {
    transform: scale(0.8);
  }
  
  .courses-grid {
    grid-template-columns: 1fr;
  }
  
  .methodology-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* ===== 無障礙設計 ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 高對比模式 */
@media (prefers-contrast: high) {
  :root {
    --gray-200: #000000;
    --gray-300: #000000;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
  }
}

/* 焦點樣式 */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* 跳過連結 */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: var(--white);
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 1000;
}

.skip-link:focus {
  top: 6px;
}

/* ===== 列印樣式 ===== */
@media print {
  .navbar,
  .cart-sidebar,
  .mobile-filter-btn,
  .notification,
  .modal,
  .loading-spinner {
    display: none !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  .hero {
    padding: 20pt 0;
  }
  
  .btn {
    border: 1pt solid var(--gray-400);
    background: none !important;
    color: var(--gray-800) !important;
  }
}

/* ===== Hero 視覺與版面同步子站 ===== */
.hero {
  min-height: 100vh;
  padding: 0; /* 以滿版視覺為主，與子站一致 */
  display: flex;
  align-items: center;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  gap: 4rem;
}

.hero-content {
  text-align: left;
}

.hero-title {
  background: none;
  -webkit-text-fill-color: initial;
  color: var(--gray-900);
  font-size: 3.5rem; /* 子站為 3.5rem */
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--gray-600);
  margin-bottom: 2rem;
  max-width: 640px;
}

.hero-buttons {
  flex-direction: row;
  justify-content: flex-start;
  gap: 1rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ===== 使命與願景 ===== */
.mission-vision {
  padding: var(--spacing-20) 0;
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  position: relative;
  overflow: hidden;
}

.mission-vision::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e5e7eb" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
  z-index: 1;
}

.mission-vision .container {
  position: relative;
  z-index: 2;
}

.section-header.text-center {
  text-align: center;
  margin-bottom: var(--spacing-16);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ===== Slogan Hero ===== */
.slogan-hero {
  margin-bottom: var(--spacing-20);
}

.slogan-container {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-12);
  align-items: center;
  background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
  padding: var(--spacing-12);
  border-radius: var(--radius-3xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
}

.slogan-container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(59, 130, 246, 0.05), transparent);
  transform: rotate(45deg);
  animation: sloganShine 8s linear infinite;
}

@keyframes sloganShine {
  0% { transform: rotate(45deg) translate(-100%, -100%); }
  100% { transform: rotate(45deg) translate(100%, 100%); }
}

.slogan-text {
  z-index: 2;
  position: relative;
}

.slogan-main {
  font-size: var(--font-size-4xl);
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-4);
  line-height: 1.2;
  animation: sloganGlow 3s ease-in-out infinite;
}

.slogan-description {
  font-size: var(--font-size-xl);
  color: var(--gray-600);
  font-weight: 500;
}

.slogan-visual {
  position: relative;
  z-index: 2;
}

.ai-brain {
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--white);
  box-shadow: var(--shadow-2xl);
  animation: brainPulse 2s ease-in-out infinite;
  position: relative;
}

.ai-brain::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  border: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: brainRing 2s ease-in-out infinite;
}

@keyframes brainPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes brainRing {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.3); opacity: 0; }
}

.floating-dots {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.floating-dots span {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--secondary-color);
  border-radius: 50%;
  animation: floatDot 3s ease-in-out infinite;
}

.floating-dots span:nth-child(1) {
  top: 20%;
  left: 20%;
  animation-delay: 0s;
}

.floating-dots span:nth-child(2) {
  top: 60%;
  right: 20%;
  animation-delay: 1s;
}

.floating-dots span:nth-child(3) {
  bottom: 20%;
  left: 50%;
  animation-delay: 2s;
}

@keyframes floatDot {
  0%, 100% { transform: translateY(0px) scale(1); opacity: 0.7; }
  50% { transform: translateY(-20px) scale(1.2); opacity: 1; }
}

/* ===== 使命願景卡片 ===== */
.mission-vision-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-20);
}

@media (min-width: 1024px) {
  .mission-vision-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

.mission-card,
.vision-card {
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all var(--transition-normal);
  position: relative;
}

.mission-card:hover,
.vision-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.card-header {
  padding: var(--spacing-6);
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--white);
}

.mission-card .card-icon {
  background: linear-gradient(135deg, var(--success-color), #059669);
}

.vision-card .card-icon {
  background: linear-gradient(135deg, var(--info-color), #1d4ed8);
}

.card-badge {
  background: var(--primary-color);
  color: var(--white);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-content {
  padding: var(--spacing-6);
}

.card-content h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
}

.card-content p {
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: var(--spacing-6);
}

/* ===== 使命特色 ===== */
.mission-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.mission-features .feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.mission-features .feature-item:hover {
  background: var(--gray-100);
  transform: translateX(8px);
}

.mission-features .feature-item i {
  color: var(--success-color);
  font-size: var(--font-size-lg);
}

/* ===== 願景目標 ===== */
.vision-goals {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
}

.goal-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-4);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.goal-item:hover {
  background: var(--gray-100);
  transform: translateX(8px);
}

.goal-icon {
  width: 40px;
  height: 40px;
  background: var(--info-color);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: var(--font-size-lg);
}

.goal-text h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-1);
}

.goal-text p {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  margin: 0;
}

/* ===== 卡片頁腳 ===== */
.card-footer {
  padding: var(--spacing-6);
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--spacing-3);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--success-color), var(--primary-color));
  border-radius: var(--radius-full);
  transition: width 2s ease-in-out;
}

.progress-text {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  font-weight: 500;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-4);
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--primary-color);
  line-height: 1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  font-weight: 500;
}

/* ===== 影響力區塊 ===== */
.impact-section {
  background: var(--white);
  padding: var(--spacing-12);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
}

.impact-header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.impact-header h3 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
}

.impact-header p {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  max-width: 500px;
  margin: 0 auto;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-8);
}

.impact-item {
  text-align: center;
  padding: var(--spacing-6);
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal);
}

.impact-item:hover {
  transform: translateY(-5px);
  background: var(--white);
  box-shadow: var(--shadow-lg);
}

.impact-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-4);
  font-size: 2rem;
  color: var(--white);
}

.impact-item h4 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-3);
}

.impact-item p {
  color: var(--gray-600);
  font-size: var(--font-size-lg);
  margin: 0;
}

/* ===== 響應式設計 ===== */
@media (max-width: 768px) {
  .slogan-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-8);
  }
  
  .slogan-main {
    font-size: var(--font-size-3xl);
  }
  
  .ai-brain {
    width: 100px;
    height: 100px;
    font-size: 2.5rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-3);
  }
  
  .impact-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Logo 樣式 ===== */
.logo-image {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: var(--spacing-3);
  transition: transform var(--transition-fast);
}

.logo-image:hover {
  transform: scale(1.1);
}

.footer-logo-image {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: var(--spacing-2);
}

/* ===== 課程詳情模態框 ===== */
.course-detail-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1300;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4);
  pointer-events: none;
}

.course-detail-modal.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.course-detail-modal .modal-content {
  max-width: 800px;
  max-height: 90vh;
  width: 100%;
  background-color: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
  pointer-events: auto;
  display: flex;
  flex-direction: column;
}

.course-detail-modal.open .modal-content {
  transform: scale(1);
}

/* 課程詳情模態框頭部樣式 */
.course-detail-modal .modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--gray-200);
  position: relative;
  flex-shrink: 0; /* 防止頭部被壓縮 */
}

.course-detail-modal .modal-header h3 {
  margin: 0;
  font-size: var(--font-size-xl);
  color: var(--gray-900);
  flex: 1;
}

.course-detail-modal .modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  cursor: pointer;
  color: var(--gray-500);
  padding: var(--spacing-2);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  position: absolute;
  top: var(--spacing-4);
  right: var(--spacing-4);
}

.course-detail-modal .modal-close:hover {
  background-color: var(--gray-100);
  color: var(--gray-700);
}

.course-detail-modal .modal-close i {
  font-size: var(--font-size-lg);
}

.course-detail-content {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--spacing-6);
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--gray-200);
}

.course-detail-image {
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 3rem;
}

.course-detail-info h4 {
  margin: 0 0 var(--spacing-3) 0;
  font-size: var(--font-size-xl);
  color: var(--gray-900);
}

.course-detail-category {
  display: inline-block;
  background-color: var(--primary-color);
  color: var(--white);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--spacing-3);
}

.course-detail-description {
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: var(--spacing-4);
}

.course-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-4);
}

.course-detail-meta span {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--gray-600);
  font-size: var(--font-size-sm);
}

.course-detail-meta i {
  color: var(--primary-color);
}

.course-detail-price {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.course-detail-price .current-price {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
}

.course-detail-price .original-price {
  font-size: var(--font-size-lg);
  color: var(--gray-400);
  text-decoration: line-through;
}

.time-selection-section {
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--gray-200);
}

/* 模態框主體內容滾動區域 */
.course-detail-modal .modal-body {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch; /* iOS 滾動優化 */
  max-height: calc(90vh - 200px); /* 為頭部和底部留出空間 */
  padding: 0;
}

/* 滾動條樣式優化 */
.course-detail-modal .modal-body::-webkit-scrollbar {
  width: 6px;
}

.course-detail-modal .modal-body::-webkit-scrollbar-track {
  background: var(--gray-100);
  border-radius: var(--radius-full);
}

.course-detail-modal .modal-body::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: var(--radius-full);
}

.course-detail-modal .modal-body::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}

.time-selection-section h4 {
  margin: 0 0 var(--spacing-4) 0;
  color: var(--gray-900);
}

.time-slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
  max-height: 300px;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  padding-right: var(--spacing-2);
}

/* 時間選擇區域滾動條樣式 */
.time-slots-grid::-webkit-scrollbar {
  width: 4px;
}

.time-slots-grid::-webkit-scrollbar-track {
  background: var(--gray-100);
  border-radius: var(--radius-full);
}

.time-slots-grid::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: var(--radius-full);
}

.time-slots-grid::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}

.time-slot-option {
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-3);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.time-slot-option:hover {
  border-color: var(--primary-color);
  background-color: var(--primary-50);
}

.time-slot-option.selected {
  border-color: var(--primary-color);
  background-color: var(--primary-color);
  color: var(--white);
}

.time-slot-option.selected .time-slot-day {
  color: var(--white);
}

.time-slot-day {
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--spacing-1);
}

.time-slot-time {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
}

.time-slot-option.selected .time-slot-time {
  color: var(--white);
}

.course-detail-actions {
  display: flex;
  gap: var(--spacing-4);
  padding: var(--spacing-6);
  justify-content: flex-end;
  flex-shrink: 0; /* 防止底部被壓縮 */
  border-top: 1px solid var(--gray-200);
  background-color: var(--white);
}

@media (max-width: 768px) {
  .course-detail-content {
    grid-template-columns: 1fr;
    text-align: center;
    padding: var(--spacing-4);
    gap: var(--spacing-4);
  }
  
  .course-detail-image {
    margin: 0 auto;
    width: 100px;
    height: 100px;
    font-size: 2.5rem;
  }
  
  .course-detail-info h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-3);
  }
  
  .course-detail-meta {
    justify-content: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
  }
  
  .course-detail-price {
    justify-content: center;
    gap: var(--spacing-2);
  }
  
  .course-detail-actions {
    flex-direction: column;
    padding: var(--spacing-4);
    gap: var(--spacing-3);
  }
  
  .course-detail-actions .btn {
    width: 100%;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-4);
  }
  
  .time-slots-grid {
    grid-template-columns: 1fr;
    max-height: none !important;
    overflow-y: visible !important;
    overflow-x: visible !important;
    -webkit-overflow-scrolling: auto !important;
    padding-right: 0;
  }
  
  .time-selection-section {
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    border-bottom: 1px solid var(--gray-200);
  }
  
  .time-selection-section h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-4);
    text-align: center;
    color: var(--gray-900);
  }
  
  /* 手機模式下的時間選項優化 */
  .time-slot-option {
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-3);
    min-height: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: var(--radius-lg);
    background-color: var(--gray-50);
    border: 2px solid var(--gray-200);
    transition: all var(--transition-fast);
  }
  
  .time-slot-option:hover {
    background-color: var(--primary-50);
    border-color: var(--primary-color);
  }
  
  .time-slot-option.selected {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
  }
  
  .time-slot-day {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-2);
    font-weight: 600;
  }
  
  .time-slot-time {
    font-size: var(--font-size-base);
    color: var(--gray-600);
  }
  
  .time-slot-option.selected .time-slot-day,
  .time-slot-option.selected .time-slot-time {
    color: var(--white);
  }
  
  /* 手機模式下的模態框滾動優化 */
  .course-detail-modal {
    padding: var(--spacing-2);
    align-items: flex-start;
    padding-top: var(--spacing-4);
  }
  
  .course-detail-modal .modal-content {
    max-height: calc(100vh - var(--spacing-8));
    max-width: calc(100vw - var(--spacing-4));
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch; /* iOS 滾動優化 */
    border-radius: var(--radius-lg);
    margin: var(--spacing-2);
  }
  
  .course-detail-modal .modal-body {
    max-height: none; /* 移除高度限制，讓內容自然展開 */
    overflow-y: visible; /* 移除滾動條 */
    overflow-x: visible;
    -webkit-overflow-scrolling: auto;
  }
  
  /* 行動裝置上的關閉按鈕樣式 */
  .course-detail-modal .modal-close {
    top: var(--spacing-3);
    right: var(--spacing-3);
    width: 36px;
    height: 36px;
  }
  
  .course-detail-modal .modal-header {
    padding: var(--spacing-4);
  }
  
  .course-detail-modal .modal-header h3 {
    font-size: var(--font-size-lg);
    padding-right: 50px; /* 為關閉按鈕留出空間 */
  }
  
  /* 行動裝置上的課程卡片樣式 */
  .course-card {
    margin-bottom: var(--spacing-4);
  }
  
  .course-title {
    font-size: var(--font-size-base);
    -webkit-line-clamp: 2;
  }
  
  .course-description {
    -webkit-line-clamp: 2;
  }
  
  .course-footer {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-3);
  }
  
  .course-price {
    align-items: center;
    text-align: center;
  }
  
  .add-to-cart-btn {
    width: 100%;
    justify-content: center;
  }
}

/* 超小螢幕裝置優化 (iPhone SE, 小於 375px) */
@media (max-width: 375px) {
  .course-detail-modal {
    padding: var(--spacing-1);
    padding-top: var(--spacing-2);
  }
  
  .course-detail-modal .modal-content {
    max-height: calc(100vh - var(--spacing-4));
    max-width: calc(100vw - var(--spacing-2));
    border-radius: var(--radius-lg);
    margin: var(--spacing-1);
  }
  
  .course-detail-modal .modal-header {
    padding: var(--spacing-3);
  }
  
  .course-detail-modal .modal-header h3 {
    font-size: var(--font-size-base);
    padding-right: 40px;
  }
  
  .course-detail-modal .modal-close {
    top: var(--spacing-2);
    right: var(--spacing-2);
    width: 32px;
    height: 32px;
  }
  
  .course-detail-content {
    padding: var(--spacing-3);
    gap: var(--spacing-3);
  }
  
  .course-detail-image {
    width: 80px;
    height: 80px;
    font-size: 2rem;
  }
  
  .course-detail-info h4 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-2);
  }
  
  .course-detail-meta {
    justify-content: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
  }
  
  .course-detail-price {
    justify-content: center;
    gap: var(--spacing-2);
  }
  
  .time-selection-section {
    padding: var(--spacing-3);
    border-bottom: 1px solid var(--gray-200);
  }
  
  .time-selection-section h4 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-3);
    text-align: center;
    color: var(--gray-900);
  }
  
  .time-slots-grid {
    max-height: none !important;
    overflow-y: visible !important;
    overflow-x: visible !important;
    -webkit-overflow-scrolling: auto !important;
    padding-right: 0;
  }
  
  /* 超小螢幕下的時間選項優化 */
  .time-slot-option {
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-2);
    min-height: 50px;
    border-radius: var(--radius-md);
  }
  
  .time-slot-day {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-1);
    font-weight: 600;
  }
  
  .time-slot-time {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
  }
  
  .course-detail-actions {
    padding: var(--spacing-3);
    gap: var(--spacing-2);
  }
  
  .course-detail-actions .btn {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    width: 100%;
    justify-content: center;
  }
  
  .course-detail-modal .modal-body {
    max-height: none; /* 移除高度限制，讓內容自然展開 */
    overflow-y: visible; /* 移除滾動條 */
    overflow-x: visible;
    -webkit-overflow-scrolling: auto;
  }
}

/* ===== 載入指示器 ===== */