:root {
  --header-offset: 110px; /* Desktop: header-top (60px) + main-nav (50px) */
}
@media (max-width: 768px) {
  :root {
    --header-offset: 110px; /* Mobile: header-top (60px) + mobile-nav-buttons (50px) */
  }
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Ensure content is not hidden by fixed header */
  line-height: 1.6;
  color: #333;
  background-color: #FFFFFF;
  overflow-x: hidden;
}

/* Header Styles */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: #FFFFFF; /* Base background for the whole header */
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  z-index: 1000;
}

.header-top {
  background-color: #26A9E0; /* Primary color for top bar */
  color: #FFFFFF;
  padding: 15px 0;
  min-height: 60px;
  display: flex;
  align-items: center;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  box-sizing: border-box;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: #FFFFFF;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px; /* Limit logo width */
}

.desktop-nav-buttons {
  display: flex;
  gap: 10px;
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  text-align: center;
  transition: background-color 0.3s ease, transform 0.2s ease;
  white-space: nowrap;
  cursor: pointer;
}

.btn-register {
  background-color: #26A9E0; /* Primary color */
  color: #FFFFFF;
  border: 2px solid #26A9E0;
}

.btn-register:hover {
  background-color: #1e8bc3;
  border-color: #1e8bc3;
  transform: translateY(-2px);
}

.btn-login {
  background-color: #EA7C07; /* Login specific color */
  color: #FFFFFF;
  border: 2px solid #EA7C07;
}

.btn-login:hover {
  background-color: #d16e06;
  border-color: #d16e06;
  transform: translateY(-2px);
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: 1001;
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hamburger-icon {
  display: block;
  width: 25px;
  height: 3px;
  background-color: #FFFFFF;
  position: relative;
  transition: background-color 0.3s ease;
}

.hamburger-icon::before, .hamburger-icon::after {
  content: '';
  display: block;
  width: 100%;
  height: 3px;
  background-color: #FFFFFF;
  position: absolute;
  transition: transform 0.3s ease;
}

.hamburger-icon::before {
  top: -8px;
}

.hamburger-icon::after {
  top: 8px;
}

.hamburger-menu.active .hamburger-icon {
  background-color: transparent;
}

.hamburger-menu.active .hamburger-icon::before {
  transform: translateY(8px) rotate(45deg);
}

.hamburger-menu.active .hamburger-icon::after {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-nav-buttons {
  display: none; /* Hidden on desktop */
}

.main-nav {
  background-color: #1e8bc3; /* A darker shade of primary for main nav */
  padding: 10px 0;
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 20px;
  box-sizing: border-box;
  flex-wrap: wrap; /* Allow wrapping on smaller desktop screens */
}

.nav-link {
  color: #FFFFFF;
  text-decoration: none;
  padding: 8px 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.nav-link:hover {
  background-color: rgba(255,255,255,0.1);
  border-radius: 4px;
}

/* Footer Styles */
.site-footer {
  background-color: #26A9E0;
  color: #FFFFFF;
  padding: 40px 20px 20px;
  font-size: 14px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255,255,255,0.2);
}

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

.footer-logo {
  font-size: 22px;
  font-weight: bold;
  color: #FFFFFF;
  text-decoration: none;
  display: block;
  margin-bottom: 15px;
}

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

.site-footer p {
  margin-bottom: 10px;
  line-height: 1.8;
}

.footer-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav li {
  margin-bottom: 8px;
}

.footer-nav a {
  color: #FFFFFF;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-nav a:hover {
  color: #f0f0f0;
  text-decoration: underline;
}

.copyright {
  text-align: center;
  padding-top: 20px;
  font-size: 13px;
  color: rgba(255,255,255,0.8);
}

/* Mobile Specific Styles */
@media (max-width: 768px) {
  .header-top {
    padding: 10px 0;
    min-height: 60px;
    position: relative; /* For absolute positioning of logo if needed */
  }

  .header-container {
    padding: 0 15px;
    width: 100%;
    max-width: none; /* Ensure it takes full width */
    justify-content: space-between;
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 20px;
    max-width: calc(100% - 80px); /* Adjust for hamburger width */
  }

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

  .hamburger-menu {
    display: flex;
    order: -1; /* Place hamburger menu to the left */
    margin-right: auto; /* Push logo to center */
    color: #FFFFFF;
  }

  .mobile-nav-buttons {
    display: flex !important;
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding: 10px 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: #f0f0f0; /* Light background for mobile buttons */
    box-shadow: inset 0 -2px 5px rgba(0,0,0,0.05);
  }

  .mobile-nav-buttons .btn {
    flex: 1; min-width: 0;
    max-width: calc(50% - 5px); /* Account for gap */
    box-sizing: border-box;
    padding: 8px 12px;
    font-size: 13px;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    position: fixed;
    top: var(--header-offset); /* Position below fixed header and mobile buttons */
    left: 0;
    width: 100%;
    height: calc(100% - var(--header-offset));
    background-color: rgba(0,0,0,0.95); /* Dark overlay for mobile menu */
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    transform: translateX(-100%); /* Slide out from left */
    transition: transform 0.3s ease;
    overflow-y: auto;
    padding-top: 20px;
    box-sizing: border-box;
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 15px;
    width: 100%;
    max-width: none; /* Ensure it takes full width */
  }

  .nav-link {
    width: 100%;
    padding: 12px 15px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    font-size: 16px;
    text-align: left;
  }

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

  .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: 999;
  }

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

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

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

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

/* Prevent body scroll when menu is open */
body.no-scroll {
  overflow: 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;
  }
}