:root {
  --primary-color: #017439;
  --accent-color: #FFFFFF;
  --button-register-bg: #C30808;
  --button-login-bg: #C30808;
  --button-text-color: #000000; /* Adjusted for WCAG AA contrast */
  --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);
  background-color: var(--accent-color);
  color: #333;
  overflow-x: hidden;
}

/* Shared Container Styles */
.header-container, .nav-container, .footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Site Header - Fixed Navigation */
.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: var(--accent-color);
}

.header-top {
  background-color: var(--primary-color); /* Dark green for top bar */
  padding: 15px 0;
  display: flex;
  align-items: center;
  min-height: 60px; /* Ensure minimum height */
}

.header-top .header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--accent-color);
  text-decoration: none;
  white-space: nowrap;
  display: block; /* Ensure logo is always displayed */
}

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

.btn {
  padding: 10px 15px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  white-space: nowrap;
  text-align: center;
  transition: background-color 0.3s ease, color 0.3s ease;
  box-sizing: border-box;
  font-size: 15px;
}

.btn-register {
  background-color: var(--button-register-bg);
  color: var(--button-text-color);
  border: 1px solid var(--button-register-bg);
}

.btn-register:hover {
  background-color: darken(var(--button-register-bg), 10%);
  border-color: darken(var(--button-register-bg), 10%);
}

.btn-login {
  background-color: var(--button-login-bg);
  color: var(--button-text-color);
  border: 1px solid var(--button-login-bg);
}

.btn-login:hover {
  background-color: darken(var(--button-login-bg), 10%);
  border-color: darken(var(--button-login-bg), 10%);
}

.main-nav {
  background-color: var(--accent-color); /* White for main nav */
  padding: 10px 0;
  display: flex; /* Desktop default: flex */
  min-height: 50px; /* Ensure minimum height */
}

.main-nav .nav-container {
  display: flex;
  flex-direction: row; /* Desktop default: row */
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.nav-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: bold;
  padding: 5px 0;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: #004d26; /* Darker shade of primary */
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  position: relative;
  z-index: 1002;
}

.hamburger-menu .bar {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--accent-color);
  margin: 5px 0;
  transition: 0.4s;
}

/* Mobile Specific Button Container - Initially hidden on desktop */
.mobile-nav-buttons {
  display: none; /* Hidden on desktop */
}

/* Mobile menu overlay */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
  cursor: pointer;
}

/* Footer Styles */
.site-footer {
  background-color: var(--primary-color);
  color: var(--accent-color);
  padding: 40px 0;
  font-size: 14px;
}

.site-footer .footer-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 30px;
}

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

.footer-col h3 {
  color: var(--accent-color);
  font-size: 18px;
  margin-bottom: 15px;
}

.footer-col p, .footer-col ul {
  margin: 0 0 10px 0;
  padding: 0;
  list-style: none;
}

.footer-col a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-col a:hover {
  color: #c7eed6; /* Lighter shade of primary */
}

/* Mobile Styles */
@media (max-width: 768px) {
  .header-container, .nav-container, .footer-container {
    width: 100%;
    max-width: none;
    padding-left: 15px;
    padding-right: 15px;
  }

  .site-header {
    box-sizing: border-box;
    overflow-x: hidden;
  }

  .header-top {
    justify-content: space-between;
    padding: 15px 0;
  }

  .header-top .header-container {
    justify-content: flex-start; /* Align hamburger to left */
    position: relative;
    min-height: 50px;
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    max-width: calc(100% - 100px); /* Account for hamburger space */
    font-size: 20px;
  }

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

  .mobile-nav-buttons {
    display: flex !important;
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding: 10px 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: var(--primary-color); /* Match header-top background */
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .mobile-nav-buttons .btn {
    flex: 1; min-width: 0;
    max-width: calc(50% - 5px); /* Two buttons with 10px gap */
    box-sizing: border-box;
    padding: 8px 12px;
    font-size: 13px;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .hamburger-menu {
    display: block; /* Show hamburger menu */
    position: relative;
    z-index: 1002;
  }

  .hamburger-menu .bar {
    background-color: var(--accent-color);
  }

  .hamburger-menu.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger-menu.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger-menu.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column; /* Vertical menu */
    position: fixed;
    top: var(--header-offset); /* Position below fixed header and buttons */
    left: 0;
    width: 80%;
    height: calc(100% - var(--header-offset));
    background-color: var(--accent-color);
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.2);
    transform: translateX(-100%); /* Slide out of view */
    transition: transform 0.3s ease;
    overflow-y: auto;
    z-index: 1001;
  }

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

  .main-nav .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 15px;
    gap: 15px;
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
  }

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

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

  .site-footer .footer-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

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

  .footer-col ul {
    padding: 0;
  }

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

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

.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;
  }
}