:root {
  --header-offset: 120px; /* Desktop: header-top (70px) + main-nav (50px) */
  --color-primary: #000000;
  --color-secondary: #FFFFFF;
  --color-login: #FCBC45;
  --color-register: #FFFFFF;
  --color-background: #FFFFFF;
}

@media (max-width: 768px) {
  :root {
    --header-offset: 120px; /* Mobile: header-top (70px) + mobile-buttons (50px) */
  }
}

body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  color: #333333; /* Default text color on light backgrounds */
  background-color: var(--color-background);
}

body.no-scroll {
  overflow: hidden;
}

/* Header Styles */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  background-color: var(--color-primary); /* Fallback, sections have specific colors */
}

.header-top {
  background-color: var(--color-primary); /* Black */
  color: var(--color-secondary);
  padding: 20px 0;
  min-height: 70px;
  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(--color-secondary);
  text-decoration: none;
  white-space: nowrap;
  padding-right: 20px; /* Space between logo and buttons/menu if any */
  line-height: 1;
}

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

.btn {
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  text-align: center;
  display: inline-block;
  white-space: nowrap;
  transition: background-color 0.3s ease, color 0.3s ease;
  border: none;
  cursor: pointer;
  line-height: 1.2;
}

.btn-login {
  background-color: var(--color-login); /* #FCBC45 */
  color: var(--color-primary); /* Black for contrast */
}

.btn-login:hover {
  background-color: #e0a73c;
}

.btn-register {
  background-color: var(--color-secondary); /* #FFFFFF */
  color: var(--color-primary); /* Black for contrast */
}

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

.hamburger-menu {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: 1001;
}

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

.main-nav {
  background-color: #1a1a1a; /* Dark grey, contrasting with primary black */
  padding: 15px 0;
  min-height: 50px;
  display: flex; /* Desktop default: flex */
  align-items: center;
  justify-content: center; /* Center nav links on desktop */
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: row; /* Desktop default: row */
  justify-content: center;
  align-items: center;
  padding: 0 20px;
  box-sizing: border-box;
  gap: 30px;
}

.nav-link {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: bold;
  font-size: 16px;
  white-space: nowrap;
  transition: color 0.3s ease;
  line-height: 1.2;
}

.nav-link:hover {
  color: var(--color-login); /* Highlight on hover */
}

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

.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 999;
}

/* Footer Styles */
.site-footer {
  background-color: var(--color-primary);
  color: var(--color-secondary);
  padding: 40px 20px 20px;
  font-size: 14px;
  line-height: 1.6;
  border-top: 1px solid #333;
}

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

.site-footer .footer-column {
  flex: 1;
  min-width: 200px;
}

.site-footer .footer-logo {
  font-size: 20px;
  font-weight: bold;
  color: var(--color-secondary);
  text-decoration: none;
  margin-bottom: 15px;
  display: block;
}

.site-footer h3 {
  color: var(--color-login);
  font-size: 16px;
  margin-bottom: 15px;
  text-transform: uppercase;
}

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

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

.site-footer ul li a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.site-footer ul li a:hover {
  color: var(--color-login);
}

.site-footer .footer-bottom {
  max-width: 1200px;
  margin: 30px auto 0;
  text-align: center;
  border-top: 1px solid #333;
  padding-top: 20px;
  color: #aaa;
}

/* Mobile Styles */
@media (max-width: 768px) {
  .header-container {
    padding: 0 15px;
    width: 100%;
    max-width: none;
  }

  .logo {
    flex-grow: 1;
    text-align: center;
    padding-right: 0;
    font-size: 20px;
  }

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

  .hamburger-menu {
    display: block;
    order: -1; /* Move hamburger to the left */
    margin-left: -10px; /* Adjust for padding */
  }

  .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);
  }

  .mobile-buttons {
    display: flex; /* Show mobile buttons */
    background-color: var(--color-primary);
    padding: 15px 0;
    min-height: 50px;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
  }

  .mobile-buttons .header-container {
    justify-content: center;
    gap: 15px;
    padding: 0 15px;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column; /* Vertical menu */
    position: fixed;
    top: var(--header-offset); /* Position below fixed header */
    left: 0;
    width: 80%;
    height: calc(100% - var(--header-offset));
    background-color: #222; /* Darker background for mobile menu */
    transform: translateX(-100%); /* Slide out from left */
    transition: transform 0.3s ease;
    overflow-y: auto;
    padding: 20px 0;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.5);
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 20px;
    width: 100%;
    max-width: none;
    gap: 15px;
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid #333;
  }

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

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

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

  .site-footer .footer-column {
    min-width: unset;
    width: 100%;
    text-align: center;
  }

  .site-footer .footer-logo {
    text-align: center;
  }

  .site-footer h3 {
    text-align: center;
  }

  .site-footer ul {
    text-align: center;
  }

  /* 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;
  }
}

/* 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;
  }
}