/* ===== 現代化 CTPE 網站設計系統 ===== */

/* 匯入 Google Material Icons */
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200');
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@300;400;500;700;900&family=Roboto:wght@300;400;500;700;900&display=swap');

/* ===== CSS 變數系統 ===== */
:root {
  /* 顏色系統 - AI 科技感配色 */
  --primary-color: #0066FF;
  --primary-dark: #0052CC;
  --primary-light: #3385FF;
  --secondary-color: #00D9FF;
  --accent-color: #FF3D71;
  --success-color: #00E676;
  --warning-color: #FFD600;

  /* 背景顏色 */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F5F7FA;
  --bg-dark: #0A1929;
  --bg-card: #FFFFFF;

  /* 文字顏色 */
  --text-primary: #1A2332;
  --text-secondary: #5E6C84;
  --text-tertiary: #8993A4;
  --text-inverse: #FFFFFF;

  /* 陰影系統 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.20);
  --shadow-glow: 0 0 20px rgba(0, 102, 255, 0.4);

  /* 邊距系統 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  /* 字體大小 */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 20px;
  --text-2xl: 24px;
  --text-3xl: 30px;
  --text-4xl: 36px;
  --text-5xl: 48px;

  /* 圓角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* 動畫時長 */
  --transition-fast: 150ms;
  --transition-base: 250ms;
  --transition-slow: 350ms;
}

/* ===== 基礎重置 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Noto Sans TC', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-primary);
  background: var(--bg-secondary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base) ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== 導航欄 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-base) ease;
}

.navbar.scrolled {
  height: 64px;
  box-shadow: var(--shadow-md);
}

.navbar-container {
  max-width: 1440px;
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--primary-color);
  transition: transform var(--transition-base) ease;
}

.navbar-logo:hover {
  transform: translateY(-2px);
}

.navbar-logo img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  list-style: none;
}

.navbar-item {
  position: relative;
}

.navbar-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-base) ease;
}

.navbar-link:hover {
  background: var(--bg-secondary);
  color: var(--primary-color);
  transform: translateY(-2px);
}

.navbar-link.active {
  color: var(--primary-color);
  background: rgba(0, 102, 255, 0.1);
}

.navbar-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: var(--primary-color);
  border-radius: var(--radius-full);
}

/* 移動版選單按鈕 */
.navbar-toggle {
  display: none;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  transition: all var(--transition-base) ease;
}

.navbar-toggle span:nth-child(1) { top: 12px; }
.navbar-toggle span:nth-child(2) { top: 19px; }
.navbar-toggle span:nth-child(3) { top: 26px; }

.navbar-toggle.active span:nth-child(1) {
  top: 19px;
  transform: translateX(-50%) rotate(45deg);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
  top: 19px;
  transform: translateX(-50%) rotate(-45deg);
}

/* ===== Hero 區塊 ===== */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.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 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
  background-size: cover;
  background-position: bottom;
  opacity: 0.3;
  animation: wave 10s ease-in-out infinite;
}

@keyframes wave {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(-50px); }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.5) 100%);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  object-fit: cover;
  width: 100%;
  height: 100%;
  filter: brightness(0.7);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: white;
  padding: var(--spacing-2xl);
  max-width: 900px;
  animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 容器系統 ===== */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.container-sm { max-width: 720px; }
.container-md { max-width: 960px; }
.container-lg { max-width: 1200px; }

.section {
  padding: var(--spacing-3xl) 0;
}

/* ===== 卡片系統 ===== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-base) ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-elevated {
  box-shadow: var(--shadow-md);
}

.card-glow {
  box-shadow: var(--shadow-glow);
}

.card-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

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

.card-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.card-text {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 按鈕系統 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--text-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base) ease;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-dark);
  color: var(--text-inverse);
}

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

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

.btn-large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--text-lg);
}

/* ===== 網格系統 ===== */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ===== 動畫效果 ===== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* 科技感粒子背景 */
.particles-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--primary-light);
  border-radius: 50%;
  opacity: 0.6;
  animation: particleFloat 15s infinite ease-in-out;
}

@keyframes particleFloat {
  0%, 100% {
    transform: translate(0, 0);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translate(100px, -500px);
    opacity: 0;
  }
}

/* ===== 時間軸 ===== */
.timeline {
  position: relative;
  padding: var(--spacing-xl) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-2xl);
  display: flex;
  align-items: center;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  background: var(--primary-color);
  border: 4px solid white;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  z-index: 1;
}

.timeline-content {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width: 45%;
  animation: fadeInScale 0.5s ease-out;
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.timeline-item:nth-child(odd) .timeline-content {
  margin-right: auto;
}

.timeline-item:nth-child(even) .timeline-content {
  margin-left: auto;
}

/* ===== 響應式設計 ===== */
@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .navbar-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base) ease;
  }

  .navbar-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .navbar-toggle {
    display: block;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    left: 30px;
  }

  .timeline-dot {
    left: 30px;
  }

  .timeline-content {
    width: calc(100% - 80px);
    margin-left: 80px !important;
  }

  .hero-content {
    padding: var(--spacing-xl);
  }
}

@media (max-width: 480px) {
  :root {
    --text-5xl: 32px;
    --text-4xl: 28px;
    --text-3xl: 24px;
  }

  .navbar-container {
    padding: 0 var(--spacing-md);
  }

  .container {
    padding: 0 var(--spacing-md);
  }
}

/* ===== 工具類 ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

/* Material Icons 樣式 */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: var(--text-inverse);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

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

.footer-section h3 {
  margin-bottom: var(--spacing-md);
  font-size: var(--text-xl);
}

.footer-bottom {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: var(--text-tertiary);
}