:root {
  --primary-color: #26A9E0;
  --secondary-color: #FFFFFF;
  --login-btn-color: #EA7C07;
  --text-color: #333333;
  --dark-blue-header: #13639C;
  --light-gray-footer: #f5f5f5;
  --header-offset: 110px; /* Desktop: header-top (60px) + main-nav (50px) */
}

@media (max-width: 768px) {
  :root {
    --header-offset: 90px; /* Mobile: header-top (50px) + mobile-nav-buttons (40px) */
  }
}

/* Base Styles */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Ensure content is not hidden by fixed header */
  color: var(--text-color);
  overflow-x: hidden; /* Prevent horizontal scroll on body */
}

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

a:hover {
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 5px;
  text-align: center;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
  white-space: nowrap;
  cursor: pointer;
  color: var(--secondary-color);
  border: none;
}

.btn-register {
  background-color: var(--login-btn-color); /* #EA7C07 */
  box-shadow: 0 4px 10px rgba(234, 124, 7, 0.4);
}

.btn-register:hover {
  background-color: #d16e06;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(234, 124, 7, 0.6);
}

.btn-login {
  background-color: var(--primary-color); /* #26A9E0 */
  box-shadow: 0 4px 10px rgba(38, 169, 224, 0.4);
}

.btn-login:hover {
  background-color: #208ac0;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(38, 169, 224, 0.6);
}

/* Site Header - Fixed & Suspended */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--secondary-color); /* Default background, will be overridden by header-top and main-nav */
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  min-height: var(--header-offset); /* Ensure enough space for header content */
  box-sizing: border-box;
}

.header-top {
  background-color: var(--dark-blue-header); /* Darker blue for top section */
  min-height: 60px; /* Desktop header-top height */
  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; /* Padding for logo and buttons */
  box-sizing: border-box;
}

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

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

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

.main-nav {
  background-color: var(--primary-color); /* Light blue for main nav */
  min-height: 50px; /* Desktop main-nav height */
  display: flex; /* Display on desktop */
  align-items: center;
  justify-content: center;
}

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

.nav-link {
  color: var(--secondary-color);
  padding: 8px 15px;
  font-weight: bold;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.3s ease;
}

.nav-link:hover {
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  text-decoration: none;
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  width: 30px;
  height: 20px;
  position: relative;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  z-index: 1001;
}

.hamburger-menu span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--secondary-color);
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}

.hamburger-menu span:nth-child(1) {
  top: 0;
}

.hamburger-menu span:nth-child(2) {
  top: 9px;
}

.hamburger-menu span:nth-child(3) {
  top: 18px;
}

.hamburger-menu.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

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

.hamburger-menu.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.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;
}

/* Site Footer */
.site-footer {
  background-color: var(--light-gray-footer); /* Light gray for footer */
  color: var(--text-color);
  padding: 40px 20px 20px;
  font-size: 14px;
}

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

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

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

.footer-section h3 {
  font-size: 18px;
  margin-bottom: 15px;
  color: var(--dark-blue-header);
}

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

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

.footer-section ul li a {
  color: var(--text-color);
  text-decoration: none;
}

.footer-section ul li a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #e0e0e0;
  margin-top: 20px;
  color: #666;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .header-top {
    min-height: 50px; /* Mobile header-top height */
    padding: 0 15px;
  }

  .header-container {
    width: 100%;
    max-width: none;
    padding: 0;
    justify-content: flex-start; /* Adjust for hamburger menu */
    position: relative; /* For absolute logo positioning */
  }

  .hamburger-menu {
    display: block;
    margin-right: 15px; /* Space between hamburger and logo */
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 20px;
    padding: 5px 0;
    order: 2; /* Place logo after hamburger */
    max-width: calc(100% - 60px); /* Adjust for hamburger width */
  }

  .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: 8px 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: var(--dark-blue-header); /* Same as header-top for continuity */
    justify-content: center;
    align-items: center;
    min-height: 40px; /* Mobile buttons section height */
  }

  .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;
    line-height: 1.2;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Start below the fixed header + mobile buttons */
    left: 0;
    width: 70%; /* Adjust as needed */
    height: calc(100% - var(--header-offset));
    background-color: var(--primary-color);
    transform: translateX(-100%); /* Slide out of view */
    transition: transform 0.3s ease-out;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
    z-index: 999;
    overflow-y: auto;
  }

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

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

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

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

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

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

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

  .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;
  }
}