:root {
  --primary-color: #FFD700; /* Gold */
  --secondary-color: #8B0000; /* Dark Red */
  --dark-bg: #1a1a1a; /* Dark background for header top */
  --text-light: #ffffff;
  --text-dark: #333333;

  --header-offset: 110px; /* Desktop: header-top (60px) + main-nav (50px) */
}

@media (max-width: 768px) {
  :root {
    --header-offset: 109px; /* Mobile: header-top (60px) + mobile-nav-buttons (49px) */
  }
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-light);
  background-color: #000; /* General dark background */
  padding-top: var(--header-offset); /* Ensure content is not hidden by fixed header */
  line-height: 1.6;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  background-color: var(--dark-bg); /* Fallback, specific sections will override */
}

.header-top {
  background-color: var(--dark-bg); /* Dark background for the top bar */
  padding: 10px 0;
  min-height: 40px; /* For 60px total height with 10px padding top/bottom */
  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; /* Desktop padding */
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color); /* Gold logo text */
  text-transform: uppercase;
  letter-spacing: 1px;
  display: block; /* Ensure it's not hidden */
}

.desktop-nav-buttons {
  display: flex;
  gap: 15px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: bold;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none; /* Remove underline for buttons */
  white-space: nowrap; /* Prevent wrapping on desktop */
  text-align: center;
}

.btn-register {
  background-color: var(--primary-color); /* Gold button */
  color: var(--text-dark); /* Dark text on gold */
}

.btn-register:hover {
  background-color: #e6c200; /* Slightly darker gold on hover */
}

.btn-login {
  background-color: var(--secondary-color); /* Dark Red button */
  color: var(--text-light); /* Light text on dark red */
  border: 1px solid var(--secondary-color);
}

.btn-login:hover {
  background-color: #6e0000; /* Slightly darker red on hover */
  border-color: #6e0000;
}

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

.main-nav {
  background-color: var(--secondary-color); /* Dark Red for main nav */
  padding: 10px 0;
  min-height: 30px; /* For 50px total height with 10px padding top/bottom */
  display: flex; /* Desktop default: flex */
  flex-direction: row; /* Desktop default: row */
  justify-content: center; /* Center nav items on desktop */
  align-items: center;
}

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

.nav-link {
  color: var(--primary-color); /* Gold links */
  font-weight: bold;
  font-size: 16px;
  padding: 5px 0;
  transition: color 0.3s ease;
  white-space: nowrap; /* Prevent wrapping on desktop */
}

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

/* Hamburger menu (hidden on desktop) */
.hamburger-menu {
  display: none; /* Hidden on desktop */
  width: 30px;
  height: 25px;
  position: relative;
  cursor: pointer;
  z-index: 1002; /* Above overlay */
}

.hamburger-menu span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: var(--primary-color); /* Gold lines */
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}

.hamburger-menu span:nth-child(1) { top: 0; }
.hamburger-menu span:nth-child(2) { top: 11px; }
.hamburger-menu span:nth-child(3) { top: 22px; }

.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 */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 999;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu-overlay.active {
  visibility: visible;
  opacity: 1;
}

/* Footer styles */
.site-footer {
  background-color: var(--dark-bg);
  color: var(--text-light);
  padding: 40px 20px;
  font-size: 14px;
}

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

.footer-col {
  flex: 1;
  min-width: 200px;
  max-width: 300px;
}

.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 15px;
  display: block;
}

.site-footer p {
  margin: 10px 0;
  line-height: 1.6;
  color: #bbb;
}

.site-footer h3 {
  color: var(--primary-color);
  font-size: 18px;
  margin-bottom: 15px;
  text-transform: uppercase;
}

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

.footer-nav li {
  margin-bottom: 10px;
}

.footer-nav a {
  color: #bbb;
  transition: color 0.3s ease;
}

.footer-nav a:hover {
  color: var(--primary-color);
}

/* Mobile responsive styles */
@media (max-width: 768px) {
  /* Mobile content overflow */
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }

  .header-container {
    padding: 0 15px; /* Smaller padding for mobile */
    justify-content: space-between; /* Space between hamburger and logo */
    position: relative;
    min-height: 40px;
  }

  .hamburger-menu {
    display: block; /* Show hamburger on mobile */
    order: 1;
    position: static; /* Reset position for flexbox ordering */
    transform: none; /* Reset transform */
  }

  .logo {
    order: 2;
    flex: 1 !important; /* Take available space to help centering */
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 24px; /* Smaller logo on mobile */
    padding: 10px 0; /* Add some padding to logo */
    min-width: 0; /* Allow flex item to shrink */
    text-align: center; /* Fallback for text logo */
  }

  .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; /* Padding for the button bar */
    overflow: hidden; /* Prevent horizontal scroll */
    gap: 10px;
    flex-wrap: nowrap; /* Keep buttons in one line */
    background-color: #000; /* Dark background for mobile button bar */
  }

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

  .main-nav {
    display: none; /* Hidden by default on mobile */
    position: fixed; /* Fixed position for slide-in menu */
    top: var(--header-offset); /* Below the fixed header + mobile buttons */
    left: 0;
    width: 80%; /* Menu width */
    max-width: 300px; /* Max width for mobile menu */
    height: calc(100% - var(--header-offset)); /* Full height below header */
    background-color: var(--dark-bg); /* Dark background for mobile menu */
    flex-direction: column; /* Vertical links */
    transform: translateX(-100%); /* Slide out to the left */
    transition: transform 0.3s ease;
    overflow-y: auto; /* Scroll if content is too long */
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
  }

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

  .nav-container {
    flex-direction: column; /* Stack links vertically */
    align-items: flex-start; /* Align links to the left */
    padding: 20px 15px;
    gap: 15px;
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1); /* Separator */
    white-space: normal; /* Allow wrapping */
  }

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

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

  .footer-col {
    max-width: 100%;
    min-width: unset;
  }
}
/* 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;
  }
}