:root {
  --header-offset: 140px; /* Desktop: header-top (70px) + main-nav (70px) */
}

@media (max-width: 768px) {
  :root {
    --header-offset: 140px; /* Mobile: header-top (70px) + mobile-nav-buttons (70px) */
  }
}

/* Base Styles */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333333;
  background-color: #FFFFFF; /* Custom background color */
}

.site-header a, .site-footer a {
  text-decoration: none;
  color: inherit;
}

/* Header Styles */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  background-color: #000000; /* Default background for fixed header */
}

.header-top {
  background-color: #000000; /* Primary color */
  width: 100%;
  padding: 15px 0; /* min-height 40px + padding 15px = 70px */
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: #FCBC45; /* Contrast with #000000 */
  text-decoration: none;
  text-transform: uppercase;
}

.desktop-nav-buttons {
  display: flex;
  gap: 12px;
}

.btn {
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease;
  white-space: nowrap;
  display: inline-block;
}

.btn-login {
  background-color: #FCBC45; /* Custom login color */
  color: #000000;
}

.btn-register {
  background-color: #FFFFFF; /* Custom register color */
  color: #000000;
  border: 1px solid #FCBC45; /* Add a subtle border for contrast */
}

.btn-login:hover {
  background-color: #e0a53b;
}

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

.main-nav {
  background-color: #333333; /* Distinct from header-top, darker variant */
  width: 100%;
  display: flex; /* Desktop default: visible */
  padding: 15px 0; /* min-height 40px + padding 15px = 70px */
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 20px;
  flex-wrap: wrap;
}

.nav-link {
  color: #FFFFFF;
  text-decoration: none;
  padding: 10px 15px;
  transition: color 0.3s ease, background-color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: #FCBC45;
}

/* Hamburger Menu (hidden on desktop) */
.hamburger-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 1002; /* Above overlay */
}

.hamburger-icon,
.hamburger-icon::before,
.hamburger-icon::after {
  content: '';
  display: block;
  width: 100%;
  height: 3px;
  background-color: #FFFFFF;
  border-radius: 2px;
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}

.hamburger-icon {
  top: 50%;
  transform: translateY(-50%);
}

.hamburger-icon::before {
  top: -8px;
}

.hamburger-icon::after {
  top: 8px;
}

.hamburger-menu.active .hamburger-icon {
  background-color: transparent;
}

.hamburger-menu.active .hamburger-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.hamburger-menu.active .hamburger-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

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

.mobile-menu-overlay {
  display: none; /* Hidden on desktop */
}

/* Footer Styles */
.site-footer {
  background-color: #000000; /* Primary color */
  color: #FFFFFF;
  padding: 40px 20px 20px;
}

.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: 220px;
}

.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: #FCBC45; /* Contrast with #000000 */
  text-decoration: none;
  text-transform: uppercase;
  margin-bottom: 15px;
  display: block;
}

.site-footer h3 {
  color: #FCBC45; /* Accent color for headings */
  margin-bottom: 15px;
  font-size: 18px;
}

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

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

.site-footer a {
  color: #FFFFFF;
  transition: color 0.3s ease;
}

.site-footer a:hover {
  color: #FCBC45;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  margin-top: 30px;
  border-top: 1px solid #333333; /* Subtle divider */
  font-size: 14px;
  color: #CCCCCC;
}

/* Mobile Styles */
@media (max-width: 768px) {
  .header-container {
    padding: 0 15px;
    position: relative;
  }

  .hamburger-menu {
    display: block;
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
  }

  .logo {
    flex-grow: 1; /* Allow logo to take available space */
    text-align: center; /* Center the text logo */
    margin-left: 30px; /* Offset for hamburger */
    margin-right: 30px; /* Balance for logo centering */
  }

  .desktop-nav-buttons {
    display: none;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column;
    position: fixed;
    top: 0; 
    left: 0;
    width: 80%;
    max-width: 300px; /* Max width for mobile menu */
    height: 100%;
    background-color: #222222; /* Dark background for mobile menu */
    overflow-y: auto;
    transform: translateX(-100%); /* Slide out from left */
    transition: transform 0.3s ease;
    z-index: 1001;
    box-shadow: 2px 0 5px rgba(0,0,0,0.2);
    padding-top: var(--header-offset); /* Ensure content is not hidden by fixed header */
  }

  .main-nav.active {
    display: flex; /* Must set display to show */
    transform: translateX(0);
  }

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 15px;
    max-width: none; /* Crucial: no max-width on mobile container */
    width: 100%;
  }

  .nav-link {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid #444444;
    text-align: left;
  }

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

  .mobile-nav-buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    width: 100%;
    background-color: #000000; /* Match header-top */
    padding: 15px 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    position: fixed;
    top: 70px; /* Position below header-top */
    left: 0;
    z-index: 990; /* Below main nav overlay */
  }

  .mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
    display: none;
    transition: opacity 0.3s ease;
    opacity: 0;
  }

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

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

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

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

body.no-scroll {
  overflow: 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;
  }
}