:root {
  --primary-color: #000000;
  --secondary-color: #FFFFFF;
  --login-button-bg: #FCBC45;
  --register-button-bg: #FFFFFF;
  --header-top-bg: var(--primary-color);
  --main-nav-bg: #333333; /* Dark grey for main nav */
  --header-offset: 160px; /* Desktop: header-top (90px) + main-nav (70px) */
}

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

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Ensure content is not hidden by fixed header */
  background-color: var(--secondary-color); /* Per requirement: Background: #FFFFFF */
  color: #333;
  overflow-x: hidden; /* Prevent body overflow on mobile */
}

body.no-scroll {
  overflow: hidden;
}

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, 0.1);
  background-color: transparent; /* Background set by header-top and main-nav */
}

.header-top {
  background-color: var(--header-top-bg);
  padding: 15px 0;
  min-height: 60px; /* Ensures sufficient height for logo/buttons */
  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 logo and buttons */
}

.logo {
  color: var(--secondary-color);
  font-size: 28px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: block; /* Ensure logo is visible on desktop */
}

.desktop-nav-buttons {
  display: flex; /* Display on desktop */\  gap: 12px;
}

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

.btn-login {
  background-color: var(--login-button-bg);
  color: var(--primary-color); /* Black text for contrast */
  border: 1px solid var(--login-button-bg);
}

.btn-login:hover {
  filter: brightness(0.9);
}

.btn-register {
  background-color: var(--register-button-bg);
  color: var(--primary-color); /* Black text for contrast */
  border: 1px solid var(--register-button-bg);
}

.btn-register:hover {
  filter: brightness(0.9);
}

.main-nav {
  background-color: var(--main-nav-bg);
  padding: 10px 0;
  min-height: 50px; /* Ensures sufficient height for menu items */
  display: flex; /* Display on desktop */
  justify-content: center;
  align-items: center;
}

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

.nav-link {
  color: var(--secondary-color);
  font-size: 16px;
  padding: 5px 0;
  position: relative;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--login-button-bg); /* Highlight on hover */
}

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

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

.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 specific styles */
.mobile-nav-buttons {
  display: none; /* Hidden on desktop */
  background-color: var(--header-top-bg); /* Same background as header-top */
  padding: 10px 20px;
  justify-content: center;
  align-items: center;
  gap: 12px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05); /* Subtle shadow */
}

.mobile-menu-overlay {
  display: none; /* Hidden by default */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 999;
  cursor: pointer;
}

/* Footer styles */
.site-footer {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  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;
}

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

.footer-col h3 {
  color: var(--login-button-bg); /* Highlight footer headings */
  font-size: 18px;
  margin-bottom: 15px;
}

.footer-col p {
  line-height: 1.6;
  color: #ccc;
}

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

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

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

.footer-nav a:hover {
  color: var(--login-button-bg);
}

.footer-bottom {
  text-align: center;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #aaa;
}

/* Mobile media queries */
@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;
  }

  .header-top {
    padding: 10px 0;
    min-height: 50px; /* Adjusted height for mobile */
  }

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

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

  .logo {
    flex: 1; /* Allow logo to take available space */
    text-align: center; /* Center text logo */
    order: 2; /* Place in the center */
    font-size: 24px;
  }

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

  .mobile-nav-buttons {
    display: flex; /* Show mobile buttons below header-top */
    width: 100%;
    max-width: none; /* Ensure full width on mobile */
    padding: 10px 15px;
    box-sizing: border-box; /* Include padding in width */
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Start below the fixed header */
    left: 0;
    width: 280px; /* Width of the mobile menu */
    height: calc(100vh - var(--header-offset)); /* Fill remaining viewport height */
    background-color: var(--main-nav-bg);
    transform: translateX(-100%); /* Slide out to the left */
    transition: transform 0.3s ease-out;
    align-items: flex-start; /* Align menu items to the left */
    padding: 20px;
    box-sizing: border-box;
    overflow-y: auto; /* Enable scrolling for long menus */
  }

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

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

  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

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

  .mobile-menu-overlay.active {
    display: block; /* Show overlay when menu is active */
  }

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

  .footer-col {
    min-width: unset;
    width: 100%;
    text-align: center;
  }

  .footer-col h3 {
    text-align: center;
  }

  .footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 20px;
  }

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