:root {
  --header-offset: 130px; /* Desktop: header-top (70px) + main-nav (60px) */
}
@media (max-width: 768px) {
  :root {
    --header-offset: 130px; /* Mobile: header-top (70px) + mobile-nav-buttons (60px) */
  }
}

/* General Body Styling */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Ensure content is not hidden by fixed header */
  color: #FFFFFF;
  background-color: #FFFFFF;
  line-height: 1.6;
}

/* Site Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  background-color: #000000; /* Primary color */
}

/* Header Top Section (Desktop) */
.header-top {
  background-color: #000000; /* Primary color */
  height: 70px;
  display: flex;
  align-items: center;
  padding: 0 20px; /* Added general padding for header-top */
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: #FCBC45; /* Login button color for brand prominence */
  text-decoration: none;
  padding: 0;
}

.desktop-nav-buttons {
  display: flex;
  gap: 12px;
}

.btn {
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease;
  border: none;
  cursor: pointer;
  display: inline-block;
  text-align: center;
}

.login-btn {
  background-color: #FCBC45; /* Custom Login color */
  color: #000000;
}

.login-btn:hover {
  background-color: #e0a73d;
}

.register-btn {
  background-color: #FFFFFF; /* Custom Register color */
  color: #000000;
}

.register-btn:hover {
  background-color: #f0f0f0;
}

/* Main Navigation (Desktop) */
.main-nav {
  background-color: #1a1a1a; /* Dark grey, contrasting with header-top */
  height: 60px;
  display: flex;
  align-items: center;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 25px;
  padding: 0 20px;
}

.nav-link {
  color: #FFFFFF;
  text-decoration: none;
  font-weight: bold;
  padding: 5px 0;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: #FCBC45;
}

/* Mobile Specific Elements (Hidden on Desktop) */
.hamburger-menu,
.mobile-nav-buttons,
.mobile-menu-overlay {
  display: none;
}

/* Footer Styling */
.site-footer {
  background-color: #000000;
  color: #FFFFFF;
  padding: 40px 20px;
  font-size: 14px;
  border-top: 1px solid #333;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 30px;
}

.footer-column {
  flex: 1;
  min-width: 200px;
}

.footer-column h3 {
  color: #FCBC45;
  font-size: 18px;
  margin-bottom: 15px;
}

.footer-column p,
.footer-nav a {
  color: #cccccc;
  text-decoration: none;
  margin-bottom: 8px;
  display: block;
}

.footer-nav a:hover {
  color: #FCBC45;
}

.footer-bottom {
  text-align: center;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #333;
  color: #999999;
}

/* Responsive Design */
@media (max-width: 768px) {
  /* Header */
  .site-header {
    display: block;
  }

  .header-top {
    height: 70px;
    padding: 0 15px;
  }

  .header-container {
    max-width: none; /* Mobile container fills width */
    padding: 0;
    justify-content: space-between;
  }

  .hamburger-menu {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
  }

  .hamburger-menu span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #FFFFFF;
    border-radius: 3px;
    transition: all 0.3s ease-in-out;
  }

  .hamburger-menu.active span:nth-child(1) {
    transform: translateY(11px) rotate(45deg);
  }

  .hamburger-menu.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger-menu.active span:nth-child(3) {
    transform: translateY(-11px) rotate(-45deg);
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    padding-left: 0; /* Remove padding from logo itself */
    margin-left: -30px; /* Offset for hamburger menu */
  }

  .desktop-nav-buttons {
    display: none;
  }

  .main-nav {
    display: none; /* Hidden by default */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Position below fixed header and mobile buttons */
    left: 0;
    width: 80%;
    max-width: 300px;
    height: calc(100% - var(--header-offset));
    background-color: #1a1a1a;
    transform: translateX(-100%); /* Start off-screen */
    transition: transform 0.3s ease;
    z-index: 9999;
    overflow-y: auto;
  }

  .main-nav.active {
    display: flex; /* Show when active */
    transform: translateX(0); /* Slide into view */
  }

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 15px;
    width: 100%;
    max-width: none; /* Mobile container fills width */
  }

  .nav-link {
    width: 100%;
    padding: 15px 0;
    border-bottom: 1px solid #333;
    text-align: left;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .mobile-nav-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 60px;
    padding: 0 15px;
    background-color: #000000; /* Same as header-top for continuity */
    position: relative;
    z-index: 1000;
    gap: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    padding: 10px 15px;
    font-size: 14px;
  }

  .mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9998;
  }

  .mobile-menu-overlay.active {
    display: block;
  }

  /* Footer */
  .footer-container {
    flex-direction: column;
    gap: 20px;
  }

  .footer-column {
    min-width: unset;
    width: 100%;
  }

  /* Mobile content overflow prevention */
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}

/* Payment Methods 图标容器样式 */
.payment-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 5px;
}

.payment-icons img,
.payment-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}

/* Game Providers 图标容器样式 */
.game-providers-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

.game-providers-icons img,
.game-provider-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}

/* Social Media 图标容器样式 */
.social-media-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

.social-media-icons img,
.social-media-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}