/* Perfect Viewer X 網站樣式 */

/* CSS 變數定義 */
:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary-color: #10b981;
  --background-color: #0f172a;
  --surface-color: #1e293b;
  --surface-light: #334155;
  --text-color: #f8fafc;
  --text-secondary: #94a3b8;
  --border-color: #475569;
  --gradient-start: #6366f1;
  --gradient-end: #8b5cf6;
  --shadow-color: rgba(0, 0, 0, 0.3);
  --card-radius: 16px;
  --transition: all 0.3s ease;
}

/* 全域樣式重設 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

/* 導航列樣式 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-color);
  text-decoration: none;
}

.logo img {
  width: 40px;
  height: 40px;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

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

.language-selector select {
  background: var(--surface-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
}

.language-selector select:hover {
  border-color: var(--primary-color);
}

.language-selector select:focus {
  outline: none;
  border-color: var(--primary-color);
}

/* 手機版選單按鈕 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.mobile-menu-btn span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--text-color);
  border-radius: 3px;
  transition: var(--transition);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--surface-color);
  padding: 20px;
  flex-direction: column;
  gap: 16px;
  z-index: 999;
  border-bottom: 1px solid var(--border-color);
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  color: var(--text-color);
  text-decoration: none;
  font-size: 1.1rem;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

/* 主視覺區樣式 */
.hero {
  min-height: 100vh;
  padding-top: 100px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--background-color) 0%, #1e1b4b 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  opacity: 0.1;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

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

.hero-logo {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  filter: drop-shadow(0 10px 30px rgba(99, 102, 241, 0.3));
}

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-color) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--primary-light);
  margin-bottom: 16px;
  font-weight: 500;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: white;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: var(--surface-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--surface-light);
  border-color: var(--primary-color);
}

.btn .icon {
  width: 20px;
  height: 20px;
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  max-width: 600px;
  border-radius: var(--card-radius);
  box-shadow: 0 20px 60px var(--shadow-color);
}

/* 功能特色區樣式 */
.features {
  padding: 100px 0;
  background: var(--background-color);
}

.features h2,
.screenshots h2,
.formats h2,
.use-cases h2,
.download h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 60px;
  background: linear-gradient(135deg, var(--text-color) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--surface-color);
  padding: 32px 24px;
  border-radius: var(--card-radius);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: 0 10px 40px rgba(99, 102, 241, 0.2);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--text-color);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 螢幕截圖區樣式 */
.screenshots {
  padding: 100px 0;
  background: var(--surface-color);
}

.screenshot-tabs {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
}

.tab-btn {
  padding: 12px 32px;
  background: var(--background-color);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: var(--transition);
}

.tab-btn:hover {
  border-color: var(--primary-color);
  color: var(--text-color);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: white;
  border-color: transparent;
}

.screenshot-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.screenshot-item img {
  width: 100%;
  border-radius: var(--card-radius);
  box-shadow: 0 10px 40px var(--shadow-color);
  transition: var(--transition);
  cursor: pointer;
}

.screenshot-item img:hover {
  transform: scale(1.02);
}

.screenshot-item p {
  margin-top: 12px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* 支援格式區樣式 */
.formats {
  padding: 100px 0;
  background: var(--background-color);
}

.formats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.format-category {
  background: var(--surface-color);
  padding: 32px;
  border-radius: var(--card-radius);
  border: 1px solid var(--border-color);
}

.format-category h3 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  color: var(--text-color);
}

.format-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.format-tag {
  background: var(--surface-light);
  color: var(--primary-light);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* 適用場景區樣式 */
.use-cases {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--surface-color) 0%, #1e1b4b 100%);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.use-case-card {
  background: rgba(30, 41, 59, 0.8);
  padding: 32px 24px;
  border-radius: var(--card-radius);
  text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.use-case-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

.use-case-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.use-case-card h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--text-color);
}

.use-case-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* 下載區樣式 */
.download {
  padding: 100px 0;
  background: var(--background-color);
  text-align: center;
}

.download-desc {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.download-buttons {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.download-btn img {
  height: 60px;
  transition: var(--transition);
}

.download-btn:hover img {
  transform: scale(1.05);
}

/* 頁尾樣式 */
.footer {
  background: var(--surface-color);
  padding: 60px 0 30px;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border-color);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 600;
}

.footer-logo img {
  width: 40px;
  height: 40px;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 30px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* 響應式設計 */
@media (max-width: 1200px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

  .hero-buttons {
    justify-content: center;
  }

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

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }

  .hero-tagline {
    font-size: 1.1rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .formats-grid {
    grid-template-columns: 1fr;
  }

  .use-cases-grid {
    grid-template-columns: 1fr;
  }

  .screenshot-gallery {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 2rem;
  }

  .hero-logo {
    width: 80px;
    height: 80px;
  }

  .features h2,
  .screenshots h2,
  .formats h2,
  .use-cases h2,
  .download h2 {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* 圖片燈箱樣式 */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.lightbox.active {
  display: flex;
}

.lightbox img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  border-radius: 8px;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 40px;
  color: white;
  cursor: pointer;
  transition: var(--transition);
}

.lightbox-close:hover {
  color: var(--primary-light);
}

/* 動畫效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.feature-card,
.format-category,
.use-case-card,
.screenshot-item {
  animation: fadeIn 0.6s ease forwards;
}