:root {
  --primary-color: #017439;
  --secondary-color: #FFFFFF;
  --button-register-bg: #C30808;
  --button-login-bg: #C30808;
  --button-text-color: #FFFF00;
  --header-top-bg: #00502A; /* Darker green */
  --main-nav-bg: #017439; /* Primary green */
  --footer-bg: #333333; /* Dark gray */
  --header-offset: 110px; /* Desktop: header-top (60px) + main-nav (50px) */
}

@media (max-width: 768px) {
  :root {
    --header-offset: 99px; /* Mobile: header-top (50px) + mobile-nav-buttons (49px) */
  }
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Apply header offset */
  background-color: var(--secondary-color);
  color: #333;
  overflow-x: hidden; /* Prevent body overflow on mobile */
}

a {
  text-decoration: none;
  color: inherit;
}

/* Shared Container Styling */
.header-container,
.nav-container,
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
  box-sizing: border-box;
}

/* Site Header */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  background-color: var(--secondary-color); /* Default background, overridden by sub-sections */
}

.header-top {
  background-color: var(--header-top-bg);
  color: var(--secondary-color);
  padding: 10px 0; 
}

.header-top .header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 40px; /* Ensures minimum height */
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--button-text-color); /* Yellow for logo for contrast */
  text-transform: uppercase;
  padding: 5px 0;
  display: block; 
}

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

.btn {
  padding: 10px 15px;
  border-radius: 5px;
  font-weight: bold;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
  text-decoration: none; /* Remove underline for buttons */
}

.btn-register, .btn-login {
  background-color: var(--button-register-bg);
  color: var(--button-text-color);
  border: none;
}

.btn-register:hover, .btn-login:hover {
  background-color: #A30606; /* Slightly darker red */
  transform: translateY(-2px);
}

.main-nav {
  background-color: var(--main-nav-bg);
  padding: 10px 0;
  display: flex; /* Desktop: flex, mobile: none */
}

.main-nav .nav-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 25px;
}

.nav-link {
  color: var(--secondary-color);
  font-weight: bold;
  padding: 5px 0;
  position: relative;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background-color: var(--button-text-color); /* Yellow underline on hover */
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--button-text-color);
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 25px;
  cursor: pointer;
  z-index: 1001;
  padding: 5px;
}

.hamburger-menu span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--secondary-color);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.mobile-nav-buttons {
  display: none; /* Hidden on desktop, shown on mobile */
  background-color: var(--header-top-bg); /* Same as header-top */
  padding: 10px 20px; /* Desktop padding, will be overridden on mobile */
  box-sizing: border-box;
}

/* Site Footer */
.site-footer {
  background-color: var(--footer-bg);
  color: var(--secondary-color);
  padding: 40px 0;
  font-size: 14px;
}

.site-footer .footer-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 30px;
}

.footer-section {
  flex: 1;
  min-width: 250px;
}

.footer-logo {
  font-size: 20px;
  font-weight: bold;
  color: var(--button-text-color);
  text-transform: uppercase;
  margin-bottom: 15px;
  display: block;
}

.footer-section h3 {
  font-size: 18px;
  margin-bottom: 15px;
  color: var(--button-text-color);
}

.footer-section p, .footer-section ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.footer-section ul li a {
  color: var(--secondary-color);
  transition: color 0.3s ease;
}

.footer-section ul li a:hover {
  color: var(--button-text-color);
}

/* Mobile Specific Styles */
@media (max-width: 768px) {
  .header-container,
  .nav-container,
  .footer-container {
    padding-left: 15px;
    padding-right: 15px;
    max-width: none; /* Remove max-width for mobile container */
    width: 100%;
  }

  .header-top .header-container {
    position: relative; /* For absolute positioning of logo if needed */
  }

  .hamburger-menu {
    display: flex; /* Show hamburger on mobile */
    order: 1; /* Move to left */
  }

  .logo {
    order: 2; /* Keep logo centered */
    flex: 1; /* Allows logo to take available space and center */
    text-align: center;
    color: var(--button-text-color); /* Ensure logo color is visible */
  }
  
  .desktop-nav-buttons {
    display: none; /* Hide desktop buttons on mobile */
  }

  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons */
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding: 10px 15px; /* Adjust padding for mobile */
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    justify-content: center; /* Center buttons if only one, or for visual balance */
  }

  .mobile-nav-buttons .btn {
    flex: 1; min-width: 0;
    max-width: calc(50% - 5px); /* Ensure two buttons fit with gap */
    box-sizing: border-box;
    padding: 8px 12px; /* Smaller padding */
    font-size: 13px; /* Smaller font size */
    white-space: normal; /* Allow text to wrap */
    word-wrap: break-word; /* Allow text to wrap */
    overflow-wrap: break-word; /* For better word breaking */
  }

  .main-nav {
    display: none; /* Hide main nav by default on mobile */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Start below the fixed header */
    left: 0;
    width: 250px; /* Sidebar width */
    height: calc(100vh - var(--header-offset)); /* Full height below header */
    background-color: var(--main-nav-bg);
    transform: translateX(-100%); /* Off-screen by default */
    transition: transform 0.3s ease-out;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.2);
    overflow-y: auto; /* Enable scrolling for long menus */
    padding: 20px 0;
  }

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

  .main-nav .nav-container {
    flex-direction: column;
    align-items: flex-start; /* Align links to the left */
    gap: 15px;
    padding-left: 20px; /* Indent links */
    padding-right: 20px;
    width: 100%; /* Take full width of sidebar */
    max-width: none; /* Remove max-width for mobile container */
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    color: var(--secondary-color);
  }

  .nav-link::after {
    background-color: var(--button-text-color); /* Yellow underline */
  }

  /* Hamburger menu active state (X icon) */
  .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);
  }

  .mobile-menu-overlay {
    display: none; /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    transition: opacity 0.3s ease;
    opacity: 0;
  }

  .mobile-menu-overlay.active {
    display: block;
    opacity: 1;
  }

  body.no-scroll {
    overflow: hidden;
  }

  /* Footer mobile adjustments */
  .site-footer .footer-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-section {
    min-width: unset; /* Remove min-width on mobile */
    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;
  }
}
/* 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;
  }
}