:root {
  --primary-color: #26A9E0;
  --secondary-color: #FFFFFF;
  --login-color: #EA7C07;
  --dark-text: #333333;
  --light-text: #FFFFFF;
  --dark-header-bg: #1A70A6; /* Darker variant of primary for header-top */
  --light-header-bg: #26A9E0; /* Primary color for main-nav */
  --btn-register-bg: var(--primary-color);
  --btn-login-bg: var(--login-color);
  --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) */
  }
}

/* Base Styles */
body {
  font-family: 'Arial', sans-serif;
  margin: 0;
  padding-top: var(--header-offset);
  line-height: 1.6;
  color: var(--dark-text);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: var(--primary-color);
}

a:hover {
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: bold;
  text-decoration: none;
  color: var(--light-text);
  transition: background-color 0.3s ease, transform 0.2s ease;
  white-space: nowrap;
  text-align: center;
  cursor: pointer;
}

.btn-register {
  background-color: var(--btn-register-bg);
  border: 2px solid var(--btn-register-bg);
}

.btn-login {
  background-color: var(--btn-login-bg);
  border: 2px solid var(--btn-login-bg);
}

.btn-register:hover, .btn-login:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

/* Header */
.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: var(--secondary-color); /* Neutral background for the whole fixed header */
  box-sizing: border-box;
}

.header-top {
  background-color: var(--dark-header-bg); /* Distinct color for top bar */
  min-height: 60px;
  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;
  box-sizing: border-box;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--light-text);
  text-decoration: none;
  padding: 10px 0;
  white-space: nowrap;
}

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

.hamburger-menu {
  display: none; /* Hidden on desktop */
  cursor: pointer;
  width: 30px;
  height: 25px;
  position: relative;
  flex-direction: column;
  justify-content: space-between;
  padding: 5px 0;
  z-index: 1001; /* Ensure hamburger is clickable */
}

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

/* Main Navigation (Desktop) */
.main-nav {
  background-color: var(--light-header-bg); /* Primary color for nav bar */
  min-height: 50px;
  display: flex; /* Default to desktop flex */
  align-items: center;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: row; /* Desktop horizontal */
  justify-content: center;
  align-items: center;
  padding: 10px 20px;
  box-sizing: border-box;
  flex-wrap: wrap;
}

.nav-link {
  color: var(--light-text);
  padding: 8px 15px;
  font-weight: bold;
  font-size: 15px;
  transition: background-color 0.3s ease, color 0.3s ease;
  border-radius: 4px;
  white-space: nowrap;
}

.nav-link:hover {
  background-color: rgba(255, 255, 255, 0.15);
  text-decoration: none;
}

/* Mobile Navigation Buttons (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: 998;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

/* Footer */
.site-footer {
  background-color: #222222;
  color: #cccccc;
  padding: 40px 20px 20px;
  font-size: 14px;
  box-sizing: border-box;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 30px;
  padding-bottom: 30px;
}

.footer-col {
  flex: 1;
  min-width: 200px;
  max-width: 300px;
}

.footer-logo {
  font-size: 22px;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 15px;
  display: block;
}

.footer-col p {
  margin-bottom: 10px;
}

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

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

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

.footer-nav a {
  color: #cccccc;
  transition: color 0.3s ease;
}

.footer-nav a:hover {
  color: var(--primary-color);
  text-decoration: none;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid #444444;
  padding-top: 20px;
  margin-top: 20px;
}

.footer-bottom p {
  margin: 0;
  color: #999999;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .site-header {
    overflow-x: hidden;
  }

  .header-top .header-container {
    padding: 0 15px;
    max-width: none;
    width: 100%;
    position: relative;
    min-height: 60px; /* Ensure enough height for absolute logo */
  }

  .hamburger-menu {
    display: flex;
  }

  .logo {
    position: absolute !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    max-width: calc(100% - 100px); /* Leave space for hamburger */
    height: 100%; /* Take full height of parent for vertical centering */
    font-size: 20px;
    padding: 0;
  }

  .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(--dark-header-bg);
    border-top: 1px solid rgba(255,255,255,0.1);
  }

  .mobile-nav-buttons .btn {
    flex: 1; min-width: 0;
    max-width: calc(50% - 5px);
    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;
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background-color: var(--light-header-bg);
    flex-direction: column;
    padding-top: var(--header-offset);
    box-sizing: border-box;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .main-nav.active {
    display: flex;
    transform: translateX(0);
  }

  .nav-container {
    flex-direction: column;
    padding: 20px 15px;
    max-width: none;
    width: 100%;
    align-items: flex-start;
  }

  .nav-link {
    width: 100%;
    padding: 12px 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

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

  /* Hamburger menu active state (X icon) */
  .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);
  }

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

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

  .footer-col h3 {
    margin-top: 20px;
  }

  /* 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;
  }
}
/* 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;
  }
}