:root {
  --primary-color: #CC0000;
  --secondary-color: #000000;
  --text-color-light: #ffffff;
  --text-color-dark: #333333;
  --header-offset: 110px; /* Desktop: header-top (60px) + main-nav (50px) */
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Ensure content is not hidden by fixed header */
  background-color: #f4f4f4;
  color: var(--text-color-dark);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--secondary-color); /* Dark background for header */
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  z-index: 1000;
}

.header-top {
  background-color: var(--secondary-color);
  padding: 0 20px; /* Padding for the header-top container */
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px; /* Fixed height for desktop header-top */
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
}

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

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: bold;
  font-size: 15px;
  text-align: center;
  transition: all 0.3s ease;
  white-space: nowrap;
  cursor: pointer;
  border: none;
}

.btn-register {
  background-color: var(--primary-color);
  color: var(--text-color-light);
}

.btn-register:hover {
  background-color: #e60000;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(204, 0, 0, 0.4);
}

.btn-login {
  background-color: #333333;
  color: var(--text-color-light);
}

.btn-login:hover {
  background-color: #555555;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.main-nav {
  background-color: #1a1a1a; /* Slightly lighter dark for contrast with header-top */
  width: 100%;
  display: flex; /* Desktop default: flex */
  justify-content: center;
  align-items: center;
  padding: 0 20px;
  height: 50px; /* Fixed height for desktop main-nav */
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: row; /* Desktop default: row */
  justify-content: center;
  align-items: center;
  gap: 25px;
  height: 100%;
}

.nav-link {
  color: var(--text-color-light);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  padding: 5px 0;
  position: relative;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--primary-color);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

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

.hamburger-icon {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--text-color-light);
  position: relative;
  transition: background-color 0.3s ease;
}

.hamburger-icon::before, .hamburger-icon::after {
  content: '';
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--text-color-light);
  position: absolute;
  transition: transform 0.3s ease;
}

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

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

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

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

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

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

.mobile-menu-overlay {
  display: none;
}

/* Footer Styles */
.site-footer {
  background-color: var(--secondary-color);
  color: #cccccc;
  padding: 40px 20px;
  font-size: 14px;
}

.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: 250px;
}

.footer-column h3 {
  color: var(--primary-color);
  font-size: 18px;
  margin-bottom: 20px;
}

.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 15px;
  display: block;
}

.footer-column p {
  line-height: 1.6;
}

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

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

.footer-nav a {
  color: #cccccc;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-nav a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  margin-top: 30px;
  border-top: 1px solid #333333;
  color: #999999;
}

/* Mobile Styles */
@media (max-width: 768px) {
  :root {
    --header-offset: 109px; /* Mobile: header-top (60px) + mobile-nav-buttons (49px) */
  }

  body {
    overflow-x: hidden;
  }

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

  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }

  .header-top {
    padding: 0 15px;
    height: 60px; /* Fixed height for mobile header-top */
  }

  .header-container {
    width: 100%;
    max-width: none;
    justify-content: space-between;
    position: relative;
    padding: 0;
  }

  .hamburger-menu {
    display: block;
    order: 1;
    margin-right: auto; /* Push logo to center */
  }

  .logo {
    order: 2;
    flex: 1 !important; /* Force logo to take available space and center */
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 24px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    max-width: calc(100% - 100px); /* Account for hamburger and potential right-side element */
  }

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

  .mobile-nav-buttons {
    display: flex !important;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 10px 15px; /* Added padding to match header-top horizontal padding */
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: #222222; /* Slightly different background for visual separation */
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Max width for 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;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column; /* Vertical layout for mobile menu */
    position: fixed;
    top: var(--header-offset); /* Position below the header and mobile buttons */
    left: 0;
    width: 280px;
    height: calc(100% - var(--header-offset));
    background-color: var(--secondary-color);
    transform: translateX(-100%); /* Slide out to the left */
    transition: transform 0.3s ease;
    padding: 20px 0;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    overflow-y: auto;
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 20px;
    gap: 15px;
    height: auto;
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    font-size: 17px;
  }

  .nav-link::after {
    bottom: 0;
    height: 1px;
  }

  .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;
    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%;
    text-align: center;
  }

  .footer-column h3, .footer-logo {
    text-align: center;
  }

  .footer-nav {
    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;
  }
}