:root {
  --primary-color: #017439;
  --accent-color: #FFFFFF;
  --register-btn-bg: #C30808;
  --login-btn-bg: #C30808;
  --btn-text-color: #FFFF00;
  --header-offset: 110px; /* Desktop: header-top (60px) + main-nav (50px) */
}

@media (max-width: 768px) {
  :root {
    --header-offset: 110px; /* Mobile: header-top (60px) + mobile-nav-buttons (50px) */
  }
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Apply header offset to body */
  background-color: var(--accent-color); /* General background */
  color: #333;
  line-height: 1.6;
  overflow-x: hidden; /* Prevent body overflow on mobile */
}

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);
}

/* Desktop Header Top */
.header-top {
  background-color: var(--primary-color); /* Darker green for top bar */
  min-height: 60px; /* Fixed height for header-top */
  display: flex;
  align-items: center;
  width: 100%;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px; /* Padding for content inside container */
  box-sizing: border-box;
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--accent-color);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 5px 0; /* Adjust padding if needed, but container padding is primary */
  display: block; /* Ensure logo is visible */
}

.desktop-nav-buttons {
  display: flex;
  gap: 10px;
}

.btn {
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: bold;
  text-align: center;
  transition: background-color 0.3s ease, transform 0.2s ease;
  white-space: nowrap;
  text-decoration: none; /* Remove underline for buttons */
}

.btn-register {
  background-color: var(--register-btn-bg);
  color: var(--btn-text-color);
  border: none;
}

.btn-register:hover {
  background-color: #A00808; /* Darkened red */
  transform: translateY(-2px);
}

.btn-login {
  background-color: var(--login-btn-bg);
  color: var(--btn-text-color);
  border: none;
}

.btn-login:hover {
  background-color: #A00808; /* Darkened red */
  transform: translateY(-2px);
}

/* Desktop Main Navigation */
.main-nav {
  background-color: #f0f8f0; /* Lighter green/off-white for main nav, different from header-top */
  min-height: 50px; /* Fixed height for main nav */
  display: flex; /* Desktop default: flex */
  align-items: center;
  width: 100%;
}

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

.nav-link {
  color: var(--primary-color);
  padding: 12px 15px;
  font-weight: bold;
  transition: color 0.3s ease, background-color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  background-color: rgba(var(--primary-color), 0.1); /* Lighter hover effect */
  color: #016330; /* Darkened primary color */
  border-radius: 3px;
}

/* Hamburger menu (hidden on desktop) */
.hamburger-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  position: relative;
  z-index: 1001;
}

.hamburger-menu::before,
.hamburger-menu::after,
.hamburger-menu span {
  content: '';
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--accent-color);
  margin: 5px 0;
  transition: all 0.3s ease;
}

/* Mobile specific styles */
@media (max-width: 768px) {
  .header-container {
    padding: 0 15px;
    max-width: none; /* Mobile container fills width */
    position: relative; /* For absolute positioning of logo if needed */
  }

  .header-top {
    min-height: 60px; /* Ensure consistent height */
    justify-content: space-between; /* To push hamburger left and logo center */
  }

  .hamburger-menu {
    display: block;
    order: 1; /* Place hamburger first */
    color: var(--accent-color);
    margin-right: auto; /* Push logo to center */
    padding-left: 0;
  }

  .logo {
    order: 2; /* Place logo second */
    flex: 1 !important; /* Allow logo to take available space for centering */
    display: flex !important; /* Force flex for centering */
    justify-content: center !important; /* Center logo horizontally */
    align-items: center !important;
    font-size: 24px;
    padding: 0;
  }

  .logo img {
    max-width: 100%;
    height: auto;
    max-height: 40px;
    display: block !important;
  }

  .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 container */
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: var(--primary-color); /* Same background as header-top for consistency */
    min-height: 50px; /* Fixed height for mobile buttons */
    align-items: center;
    justify-content: center; /* Center if only one button */
  }

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

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 280px; /* Sidebar width */
    height: 100%;
    background-color: var(--accent-color); /* White background for mobile menu */
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
    transform: translateX(-100%); /* Slide out of view */
    transition: transform 0.3s ease;
    overflow-y: auto; /* Scrollable if many links */
    padding-top: 60px; /* Space for fixed header content */
    z-index: 1000; /* Below hamburger, above overlay */
  }

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

  .nav-container {
    flex-direction: column;
    padding: 20px 0;
    max-width: none;
  }

  .nav-link {
    width: 100%;
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
    color: var(--primary-color);
    text-align: left;
  }

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

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

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

  .hamburger-menu.active span {
    opacity: 0;
  }

  .hamburger-menu.active::before {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger-menu.active::after {
    transform: translateY(-8px) rotate(-45deg);
  }

  .no-scroll {
    overflow: hidden;
  }

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

/* Footer styles */
.site-footer {
  background-color: var(--primary-color);
  color: var(--accent-color);
  padding: 40px 20px 20px;
  text-align: center;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  text-align: left;
  gap: 20px;
}

.footer-col {
  flex: 1;
  min-width: 250px;
  margin-bottom: 20px;
}

.footer-col h3 {
  color: var(--btn-text-color); /* Use yellow for footer headings */
  font-size: 18px;
  margin-bottom: 15px;
}

.footer-col p, .footer-col ul {
  font-size: 14px;
  line-height: 1.8;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.footer-col a:hover {
  color: var(--btn-text-color); /* Yellow hover for footer links */
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 20px;
  margin-top: 30px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

@media (max-width: 768px) {
  .footer-container {
    flex-direction: column;
    text-align: center;
    padding: 0 15px; /* Mobile padding for container */
    max-width: none;
  }
  .footer-col {
    min-width: unset;
    width: 100%;
  }
  .footer-col h3 {
    text-align: center;
  }
  .footer-col ul {
    text-align: center;
  }
}
/* 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;
  }
}