/* 完美体育APP官方下载 - 完整CSS样式文件 */

/* CSS变量与重置 */
:root {
  --primary: #1a1a2e;
  --primary-light: #2d2d44;
  --accent: #ffd700;
  --accent-dark: #e6c200;
  --accent-light: #ffe44d;
  --bg: #f0f2f5;
  --bg-card: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.7);
  --text: #1a1a2e;
  --text-light: #555;
  --text-muted: #888;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.15);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --gradient-bg: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  --gradient-accent: linear-gradient(135deg, #ffd700, #ffaa00);
  --gradient-card: linear-gradient(145deg, #ffffff, #f8f9fa);
  --glass-border: 1px solid rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --max-width: 1200px;
}

[data-theme="dark"] {
  --bg: #0d0d1a;
  --bg-card: #1a1a2e;
  --bg-glass: rgba(26, 26, 46, 0.8);
  --text: #e0e0e0;
  --text-light: #aaa;
  --text-muted: #777;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.5);
  --gradient-card: linear-gradient(145deg, #1a1a2e, #222244);
  --glass-border: 1px solid rgba(255, 255, 255, 0.1);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

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

a:hover {
  color: var(--accent-dark);
}

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

ul, ol {
  list-style: none;
  padding-left: 0;
}

/* 渐变背景动画 */
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* 滚动动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* 导航栏 */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: var(--glass-border);
  transition: background var(--transition), box-shadow var(--transition);
}

header.scrolled {
  background: rgba(26, 26, 46, 0.95);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
  transition: transform var(--transition);
}

.logo:hover {
  transform: scale(1.05);
}

.nav-menu {
  display: flex;
  gap: 5px;
}

.nav-menu li a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-light);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 2px;
  transition: transform var(--transition);
}

.nav-menu li a:hover {
  color: var(--accent);
  background: rgba(255, 215, 0, 0.1);
}

.nav-menu li a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.dark-mode-toggle, .menu-toggle {
  background: none;
  border: 2px solid var(--text-muted);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--text);
  transition: all var(--transition);
}

.dark-mode-toggle:hover, .menu-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: rotate(15deg);
}

.menu-toggle {
  display: none;
  font-size: 1.4rem;
}

/* Hero区域 */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-bg);
  background-size: 200% 200%;
  animation: gradientShift 8s ease infinite;
  position: relative;
  overflow: hidden;
  padding: 100px 20px 60px;
}

#hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(255, 170, 0, 0.05) 0%, transparent 50%);
  animation: shimmer 10s linear infinite;
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  animation: fadeInUp 1s ease forwards;
  position: relative;
  z-index: 1;
}

#hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  line-height: 1.2;
}

#hero-title::after {
  content: '🏆';
  display: inline-block;
  margin-left: 10px;
  animation: fadeInScale 0.6s ease 0.5s both;
}

.hero-content p {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 40px;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #1a1a2e;
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255, 215, 0, 0.6);
}

.btn-primary::before {
  content: '⬇ ';
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255, 215, 0, 0.2);
}

/* 通用section样式 */
section {
  padding: 80px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

section h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 50px;
  position: relative;
  display: inline-block;
  width: 100%;
}

section h2::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: var(--gradient-accent);
  margin: 15px auto 0;
  border-radius: 4px;
}

/* About */
#about {
  text-align: center;
  max-width: 800px;
}

#about p {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

/* 下载卡片 */
.download-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 20px;
}

.card {
  background: var(--gradient-card);
  border-radius: var(--radius);
  padding: 40px 30px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 215, 0, 0.1);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

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

.card:hover::before {
  transform: scaleX(1);
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--text);
}

.card p {
  color: var(--text-light);
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.card .btn-primary {
  margin-top: 20px;
  padding: 12px 30px;
  font-size: 1rem;
}

/* 功能网格 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px;
}

.feature-item {
  background: var(--bg-glass);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-radius: var(--radius);
  padding: 30px 20px;
  text-align: center;
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition);
  animation: fadeInScale 0.5s ease forwards;
  opacity: 0;
}

.feature-item:nth-child(1) { animation-delay: 0.1s; }
.feature-item:nth-child(2) { animation-delay: 0.2s; }
.feature-item:nth-child(3) { animation-delay: 0.3s; }
.feature-item:nth-child(4) { animation-delay: 0.4s; }

.feature-item:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 12px 40px rgba(255, 215, 0, 0.15);
  border-color: var(--accent);
}

.feature-item h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--text);
}

.feature-item h3::before {
  content: '✦ ';
  color: var(--accent);
}

.feature-item p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* 指引区域 */
#guide article {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 30px;
  margin-bottom: 25px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--accent);
  transition: all var(--transition);
}

#guide article:hover {
  box-shadow: var(--shadow-hover);
  transform: translateX(5px);
}

#guide h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--text);
}

#guide ol {
  list-style: decimal;
  padding-left: 25px;
  margin-bottom: 15px;
}

#guide ol li {
  margin-bottom: 8px;
  color: var(--text-light);
  line-height: 1.7;
}

#guide p {
  color: var(--text-light);
  line-height: 1.7;
}

/* FAQ */
.faq-list details {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: all var(--transition);
}

.faq-list details:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.faq-list summary {
  padding: 18px 25px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  background: var(--bg-card);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition);
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: '▼';
  font-size: 0.8rem;
  color: var(--accent);
  transition: transform var(--transition);
}

.faq-list details[open] summary::after {
  transform: rotate(180deg);
}

.faq-list details[open] summary {
  background: rgba(255, 215, 0, 0.05);
  border-bottom: 1px solid rgba(255, 215, 0, 0.1);
}

.faq-list details p {
  padding: 20px 25px;
  color: var(--text-light);
  line-height: 1.7;
  animation: fadeInUp 0.3s ease;
}

/* 知识中心 */
#knowledge-hub {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
}

#knowledge-hub h2 {
  grid-column: 1 / -1;
}

#knowledge-hub article {
  background: var(--bg-glass);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-radius: var(--radius);
  padding: 25px;
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition);
}

#knowledge-hub article:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

#knowledge-hub h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
  color: var(--text);
}

#knowledge-hub p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 联系 */
#contact {
  text-align: center;
  max-width: 700px;
}

#contact p {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 30px;
}

#contact ul {
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-items: center;
}

#contact ul li {
  font-size: 1.05rem;
  color: var(--text);
  padding: 10px 25px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: all var(--transition);
  width: fit-content;
}

#contact ul li:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.1);
}

/* 页脚 */
footer {
  background: var(--primary);
  padding: 40px 20px;
  margin-top: 40px;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

footer p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

footer ul {
  display: flex;
  gap: 25px;
  flex-wrap: wrap;
}

footer ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  transition: color var(--transition);
}

footer ul li a:hover {
  color: var(--accent);
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .nav-menu {
    gap: 3px;
  }
  
  .nav-menu li a {
    padding: 6px 12px;
    font-size: 0.85rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px;
    gap: 5px;
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-menu li a {
    padding: 12px 20px;
    font-size: 1rem;
    color: #fff;
    border-radius: var(--radius-sm);
  }

  .nav-menu li a:hover {
    background: rgba(255, 215, 0, 0.1);
    color: var(--accent);
  }

  .menu-toggle {
    display: flex;
  }

  #hero {
    min-height: 80vh;
    padding: 80px 20px 40px;
  }

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

  .btn-primary, .btn-secondary {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  section {
    padding: 60px 15px;
  }

  .download-cards {
    grid-template-columns: 1fr;
  }

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

  #knowledge-hub {
    grid-template-columns: 1fr;
  }

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

  footer ul {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  #hero-title {
    font-size: 2rem;
  }

  .hero-content p {
    font-size: 1rem;
  }

  section h2 {
    font-size: 1.8rem;
  }

  .card {
    padding: 30px 20px;
  }

  #guide article {
    padding: 20px;
  }
}

/* 暗色模式增强 */
[data-theme="dark"] .card {
  border-color: rgba(255, 215, 0, 0.05);
}

[data-theme="dark"] #guide article {
  border-left-color: var(--accent);
}

[data-theme="dark"] .faq-list details {
  background: var(--bg-card);
}

[data-theme="dark"] .feature-item {
  background: rgba(26, 26, 46, 0.8);
}

[data-theme="dark"] #knowledge-hub article {
  background: rgba(26, 26, 46, 0.8);
}

/* 辅助功能 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* 打印样式 */
@media print {
  header, .dark-mode-toggle, .menu-toggle {
    display: none;
  }
  
  body {
    background: #fff;
    color: #000;
  }
  
  section {
    opacity: 1 !important;
    transform: none !important;
    page-break-inside: avoid;
  }
}