:root {
  --primary-color: #0A2342;
  --secondary-color: #E6B325;
  --text-light: #ffffff;
  --text-dark: #333333;
  --header-offset: 120px; /* Desktop: header-top (70px) + main-nav (50px) */
}

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

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

/* Fixed Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  background-color: var(--text-light); /* Default light background for contrast */
}

/* Header Top Area (Desktop) */
.header-top {
  background-color: var(--primary-color); /* Dark blue background */
  padding: 10px 0;
  min-height: 50px; /* To ensure 70px total with padding */
  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; /* Padding for desktop logo/buttons from container edge */
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--secondary-color); /* Gold color for logo */
  text-decoration: none;
  padding: 5px 0; /* Adjust padding if needed to match vertical centering */
  display: block; /* Ensure it's a block-level element for consistent styling */
}

/* Desktop Navigation Buttons */
.desktop-nav-buttons {
  display: flex;
  gap: 12px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
  white-space: nowrap; /* Prevent button text from wrapping on desktop */
}

.btn-register {
  background-color: var(--secondary-color); /* Gold for register */
  color: var(--primary-color); /* Dark blue text */
  border: 2px solid var(--secondary-color);
}

.btn-register:hover {
  background-color: #d1a221; /* Darker gold on hover */
  transform: translateY(-2px);
}

.btn-login {
  background-color: var(--primary-color); /* Dark blue for login */
  color: var(--secondary-color); /* Gold text */
  border: 2px solid var(--secondary-color);
}

.btn-login:hover {
  background-color: #12335c; /* Lighter blue on hover */
  transform: translateY(-2px);
}

/* Main Navigation Area (Desktop) */
.main-nav {
  background-color: var(--secondary-color); /* Gold background for nav */
  width: 100%;
  display: flex; /* Desktop default: visible, horizontal */
  padding: 10px 0;
  min-height: 30px; /* To ensure 50px total with padding */
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: row;
  justify-content: center; /* Center nav links */
  align-items: center;
  padding: 0 20px;
  gap: 25px; /* Spacing between nav links */
}

.nav-link {
  color: var(--primary-color); /* Dark blue text on gold background */
  text-decoration: none;
  font-weight: bold;
  font-size: 16px;
  padding: 5px 0;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--text-light); /* White on hover */
}

/* Hamburger Menu (Hidden on Desktop) */
.hamburger-menu {
  display: none; /* Hidden on desktop by default */
}

/* Mobile Navigation Buttons (Hidden on Desktop) */
.mobile-nav-buttons {
  display: none; /* Hidden on desktop by default */
}

/* Footer Styles */
.site-footer {
  background-color: var(--primary-color); /* Dark blue footer */
  color: var(--text-light); /* White text */
  padding: 40px 20px;
  font-size: 14px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 30px;
}

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

.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--secondary-color); /* Gold for footer logo */
  text-decoration: none;
  display: block;
  margin-bottom: 15px;
}

.site-footer h3 {
  color: var(--secondary-color); /* Gold headings */
  font-size: 16px;
  margin-top: 0;
  margin-bottom: 15px;
}

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

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

.footer-nav a {
  color: var(--text-light);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-nav a:hover {
  color: var(--secondary-color); /* Gold on hover */
}

.site-footer p {
  margin-top: 20px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

/* Mobile Styles */
@media (max-width: 768px) {
  body {
    overflow-x: hidden; /* Prevent body overflow on mobile */
  }

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

  /* Header Top Mobile */
  .header-top {
    padding: 10px 0;
    min-height: 50px; /* Ensures 70px total with padding */
  }

  .header-container {
    padding: 0 15px; /* Smaller padding for mobile container */
    width: 100%;
    max-width: none; /* Crucial for mobile to take full width */
    position: relative; /* For logo centering if needed */
    justify-content: space-between; /* Hamburger left, Logo center, empty right */
  }

  .hamburger-menu {
    display: flex; /* Show hamburger on mobile */
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    cursor: pointer;
    z-index: 1001; /* Above logo and buttons */
    position: relative;
    padding: 5px;
  }

  .hamburger-menu span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--secondary-color); /* Gold lines */
    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);
  }

  /* Mobile Logo Centering (Text Logo) */
  .logo {
    flex: 1 !important; /* Allow logo to take available space and center */
    text-align: center;
    order: 2; /* Position logo in the middle of hamburger and empty space */
    font-size: 24px;
    padding: 0;
    line-height: 1;
    display: flex !important; /* For flex centering */
    justify-content: center !important;
    align-items: center !important;
  }

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

  /* Mobile Navigation Buttons (Always visible below header-top) */
  .mobile-nav-buttons {
    display: flex !important; /* Always visible on mobile */
    width: 100%;
    max-width: 100%; /* Ensure it takes full width */
    box-sizing: border-box;
    padding: 10px 15px; /* Padding for buttons from screen edge */
    overflow: hidden; /* Prevent overflow */
    gap: 10px; /* Space between buttons */
    flex-wrap: nowrap; /* Ensure buttons stay in one line */
    background-color: var(--primary-color); /* Dark blue background */
    min-height: 40px; /* Ensures 60px total with padding */
    justify-content: center; /* Center buttons if only one, or for even distribution */
  }

  .mobile-nav-buttons .btn {
    flex: 1; /* Distribute space evenly */
    min-width: 0; /* Allow shrinking */
    max-width: calc(50% - 5px); /* Max width for two buttons with 10px gap */
    box-sizing: border-box;
    padding: 8px 12px; /* Smaller padding */
    font-size: 13px; /* Smaller font size */
    white-space: normal; /* Allow text wrapping */
    word-wrap: break-word; /* Allow text wrapping */
    overflow-wrap: break-word; /* Allow text wrapping */
  }

  /* Main Navigation (Mobile - Hidden by default, slides in) */
  .main-nav {
    display: none; /* Hidden by default */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Start below the fixed header + mobile buttons */
    left: 0;
    width: 70%; /* Slide-in menu width */
    height: calc(100vh - var(--header-offset)); /* Full height below header */
    background-color: var(--primary-color); /* Dark blue background for mobile menu */
    transform: translateX(-100%); /* Start off-screen to the left */
    transition: transform 0.3s ease-in-out;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
    overflow-y: auto; /* Enable scrolling for long menus */
    padding: 20px 0;
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start; /* Align links to the left */
    padding: 0 20px;
    gap: 15px; /* Spacing between mobile nav links */
    max-width: none; /* Crucial for mobile to take full width */
    width: 100%;
  }

  .nav-link {
    color: var(--text-light); /* White text on dark blue menu */
    font-size: 18px;
    width: 100%; /* Full width for clickable area */
    padding: 10px 0;
  }

  /* Mobile Menu Overlay */
  .mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999; /* Below menu, above content */
    display: none; /* Hidden by default */
  }

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

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

  .footer-col {
    min-width: unset;
    flex: none;
    width: 100%;
    text-align: center; /* Center footer content on mobile */
  }

  .footer-logo {
    margin-bottom: 10px;
  }

  .site-footer h3 {
    margin-bottom: 10px;
  }

  .footer-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
  }

  .footer-nav li {
    margin-bottom: 0;
  }
}

/* Ensure contrast for text on primary/secondary colors */
.btn-register { color: var(--primary-color); } /* Dark text on gold */
.btn-login { color: var(--secondary-color); } /* Gold text on dark blue */
.nav-link { color: var(--primary-color); } /* Dark text on gold */
.main-nav.active .nav-link { color: var(--text-light); } /* White text on dark blue menu */
.site-footer p { color: rgba(255, 255, 255, 0.7); } /* Lighter white for copyright */

/* 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;
  }
}