:root {
  --primary-color: #000000;
  --secondary-color: #FFFFFF;
  --login-btn-color: #FCBC45;
  --register-btn-color: #FFFFFF;
  --header-offset: 155px; /* Desktop: header-top (80px) + main-nav (75px) */
}

@media (max-width: 768px) {
  :root {
    --header-offset: 199px; /* Mobile: header-top (90px) + mobile-nav-buttons (109px) */
  }
}

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

body.no-scroll {
  overflow: hidden;
}

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

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: bold;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease;
  white-space: nowrap;
  text-decoration: none; /* No underline for buttons */
}

.btn-login {
  background-color: var(--login-btn-color); /* Login: #FCBC45 */
  color: var(--primary-color); /* Text color on login button */
  border: 1px solid var(--login-btn-color);
}

.btn-login:hover {
  background-color: #e0a73b;
}

.btn-register {
  background-color: var(--register-btn-color); /* Register: #FFFFFF */
  color: var(--primary-color); /* Text color on register button */
  border: 1px solid var(--primary-color);
}

.btn-register:hover {
  background-color: #f0f0f0;
}

/* Header Styles */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-top {
  background-color: var(--primary-color); /* Header top background: #000000 */
  min-height: 80px; /* Desktop height for header-top */
  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 {
  font-size: 28px;
  font-weight: bold;
  color: var(--secondary-color); /* Logo text color: #FFFFFF */
  text-transform: uppercase; /* Logo text uppercase */
  display: block; /* Ensure it's not hidden */
}

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

.main-nav {
  background-color: #1a1a1a; /* Main nav background: Dark grey, contrasting with #000000 */
  min-height: 75px; /* Desktop height for main-nav */
  display: flex; /* Show main nav on desktop */
  align-items: center;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: center; /* Center nav links horizontally */
  align-items: center;
  padding: 10px 20px;
}

.nav-link {
  color: var(--secondary-color); /* Nav link color: #FFFFFF */
  padding: 10px 15px;
  font-size: 16px;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--login-btn-color); /* Hover color for nav links */
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  cursor: pointer;
  width: 30px;
  height: 20px;
  position: relative;
  z-index: 1001; /* Above mobile buttons */
}

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

.hamburger-menu span:nth-child(1) { top: 0; }
.hamburger-menu span:nth-child(2) { top: 8px; }
.hamburger-menu span:nth-child(3) { top: 16px; }

.hamburger-menu.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger-menu.active span:nth-child(2) { opacity: 0; }
.hamburger-menu.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

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

.mobile-menu-overlay {
  display: none; /* Hidden by default on desktop */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

/* Footer Styles */
.site-footer {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  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-column {
  flex: 1;
  min-width: 200px;
}

.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--secondary-color);
  margin-bottom: 15px;
  display: block;
  text-transform: uppercase; /* Footer logo text uppercase */
}

.site-footer p {
  margin: 0;
  line-height: 1.5;
  color: #bbb;
}

.site-footer h3 {
  color: var(--login-btn-color); /* Footer heading color */
  font-size: 18px;
  margin-bottom: 20px;
}

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

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

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

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

/* Mobile Styles */
@media (max-width: 768px) {
  .site-header {
    flex-direction: column;
  }

  .header-top {
    min-height: 90px; /* Mobile height for header-top */
    padding: 0 15px; /* Smaller padding for mobile */
  }

  .header-container {
    width: 100%;
    max-width: none; /* No max-width for mobile container */
    padding: 0; /* Padding handled by header-top */
    justify-content: space-between;
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 24px; /* Adjust logo size for mobile */
    order: 2; /* Logo in center */
  }

  .logo img { /* If logo is an image */
    display: block !important;
    max-width: 100%;
    height: auto;
    max-height: 40px;
  }

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

  .hamburger-menu {
    display: block; /* Show hamburger menu on mobile */
    order: 1; /* Hamburger menu on left */
    align-self: center;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column; /* Vertical layout for mobile menu */
    position: fixed;
    top: var(--header-offset); /* Start below the fixed header + buttons */
    left: 0;
    width: 80%;
    height: calc(100% - var(--header-offset)); /* Full height minus header */
    background-color: var(--primary-color);
    transform: translateX(-100%); /* Slide out of view by default */
    transition: transform 0.3s ease;
    padding-top: 20px; /* Internal padding */
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
    overflow-y: auto; /* Scroll if menu content is long */
    z-index: 1000;
  }

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

  .nav-container {
    flex-direction: column;
    padding: 0 15px;
    max-width: none; /* No max-width for mobile container */
    width: 100%;
    align-items: flex-start; /* Align menu items to the left */
  }

  .nav-link {
    width: 100%;
    padding: 15px 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .nav-link:last-child {
    border-bottom: none;
  }

  .mobile-nav-buttons {
    display: flex; /* Show mobile buttons */
    justify-content: center;
    align-items: center;
    background-color: #333333; /* Background for mobile buttons, contrasting */
    min-height: 109px; /* Mobile height for button area */
    padding: 15px;
    gap: 12px;
    width: 100%;
    box-sizing: border-box; /* Include padding in width */
  }

  /* Footer Mobile Styles */
  .footer-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

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

  .footer-column h3 {
    margin-top: 30px;
  }

  .footer-nav li {
    margin-bottom: 5px;
  }

  /* Prevent 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;
  }
}
/* 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;
  }
}