/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #1a1a1a 0%, #2b2b3b 100%);
  color: #ffffff;
  line-height: 1.6;
  min-height: 100vh;
}

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

/* Header */
.header {
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid #FFD700;
  padding: 1rem 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
}

.logo a {
  color: #FFD700;
  text-decoration: none;
  transition: all 0.3s ease;
}

.logo a:hover {
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: #c0c0c0;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 5px;
  transition: all 0.3s ease;
  font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
  color: #FFD700;
  background: rgba(255, 215, 0, 0.1);
  transform: translateY(-2px);
}

/* Main Content */
.main {
  margin-top: 80px;
}

/* Game Section */
.game-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 0.9) 100%);
  padding-top: 20px;
}

.game-container {
  text-align: center;
  animation: fadeInUp 0.8s ease-out 0.2s both;
  max-width: 1024px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  background: rgba(30, 41, 59, 0.8);
  border-radius: 20px;
  padding: 1rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.game-container h2 {
  margin-bottom: 0.5rem;
  flex-shrink: 0;
  font-size: 1.5rem;
}

.game-iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: none;
  border-radius: 15px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
  background: #000;
  position: relative;
  overflow: hidden;
}

.game-iframe:hover {
  transform: translateY(-5px);
  box-shadow: 
    0 25px 50px rgba(0, 0, 0, 0.4),
    0 0 40px rgba(255, 215, 0, 0.2);
}

/* Description Section */
.description-section {
  padding: 4rem 0;
  background: rgba(43, 43, 59, 0.3);
  backdrop-filter: blur(10px);
}

.description-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(15px);
  border-radius: 20px;
  padding: 3rem;
  border: 1px solid rgba(255, 215, 0, 0.2);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
  animation: fadeIn 1s ease-out 0.3s both;
}

.description-card h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #FFD700;
  margin-bottom: 1.5rem;
  text-align: center;
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

.description-card > p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 2.5rem;
  text-align: center;
  color: #e0e0e0;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature {
  background: rgba(0, 255, 170, 0.05);
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid rgba(0, 255, 170, 0.2);
  transition: all 0.3s ease;
  text-align: center;
}

.feature:hover {
  transform: translateY(-5px);
  background: rgba(0, 255, 170, 0.1);
  box-shadow: 0 10px 25px rgba(0, 255, 170, 0.2);
}

.feature h3 {
  font-size: 1.3rem;
  color: #00FFAA;
  margin-bottom: 1rem;
  font-weight: 600;
}

.feature p {
  color: #c0c0c0;
  line-height: 1.6;
}

/* Footer */
.footer {
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-top: 2px solid #FFD700;
  padding: 2rem 0;
  margin-top: 4rem;
}

.footer-nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  gap: 2rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.footer-link {
  color: #c0c0c0;
  text-decoration: none;
  transition: all 0.3s ease;
  padding: 0.5rem;
}

.footer-link:hover {
  color: #FFD700;
  transform: translateY(-2px);
}

.copyright {
  text-align: center;
  color: #888;
  font-size: 0.9rem;
  margin-top: 1rem;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem 20px;
  }
  
  .nav ul {
    gap: 1rem;
  }
  
  .main {
    margin-top: 120px;
  }
  
  .game-container {
    max-width: 95vw;
    height: 90vh;
    padding: 1rem;
  }
  
  .game-iframe {
    width: 100%;
    height: 400px;
    min-height: 400px;
  }
  
  .description-card {
    padding: 2rem;
    margin: 0 1rem;
  }
  
  .description-card h2 {
    font-size: 2rem;
  }
  
  .features {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .footer-nav ul {
    gap: 1rem;
  }
}

@media (min-width: 1200px) {
  .game-container {
    max-width: 90vw;
    height: 92vh;
  }
  
  .game-iframe {
    min-height: 600px;
  }
}

/* 移动端响应式样式 */
@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .logo h1 {
    font-size: 1.3rem;
  }
  
  .nav ul {
    gap: 1rem;
  }
  
  .nav-link {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
  }
  
  .main {
    margin-top: 120px;
  }
  
  .game-container {
    max-width: 95vw;
    padding: 0.5rem;
    margin: 0 10px;
  }
  
  .game-container h2 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
  }
  
  .game-iframe {
    border-radius: 10px;
    aspect-ratio: 16 / 9;
  }
}

@media (max-width: 480px) {
  .logo h1 {
    font-size: 1.1rem;
  }
  
  .nav ul {
    gap: 0.5rem;
  }
  
  .nav-link {
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
  }
  
  .game-container {
    max-width: 98vw;
    padding: 0.3rem;
    margin: 0 5px;
  }
  
  .game-container h2 {
    font-size: 1rem;
  }
  
  .game-iframe {
    aspect-ratio: 16 / 9;
  }
  

  
  .description-card {
    padding: 1.5rem;
  }
  
  .description-card h2 {
    font-size: 1.8rem;
  }
  
  .feature {
    padding: 1.5rem;
  }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #1a1a1a;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(45deg, #FFD700, #00FFAA);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(45deg, #00FFAA, #FFD700);
}

/* Loading Animation for iframe */
.game-iframe {
  position: relative;
}

.game-iframe::before {
  content: 'Loading Game...';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #FFD700;
  font-size: 1.2rem;
  font-weight: 600;
  z-index: -1;
}

/* Hover effects for interactive elements */
button, .nav-link, .footer-link {
  cursor: pointer;
}

/* Focus styles for accessibility */
.nav-link:focus,
.footer-link:focus {
  outline: 2px solid #FFD700;
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .header,
  .footer {
    display: none;
  }
  
  .main {
    margin-top: 0;
  }
  
  .game-iframe {
    display: none;
  }
}