:root {
  --primary-color: #FFD700;
  --secondary-color: #00008B;
  --header-top-bg: #000055; /* Darker blue for header top */
  --main-nav-bg: #FFD700; /* Gold for main nav */
  --text-color-light: #FFFFFF;
  --text-color-dark: #000000;
  --header-offset: 110px; /* Desktop: header-top (60px) + main-nav (50px) */
}

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

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 */
  color: var(--text-color-dark);
  overflow-x: hidden;
}

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

.header-top {
  background-color: var(--header-top-bg);
  padding: 15px 0;
  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: 28px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  display: block;
  order: 1;
}

.desktop-nav-buttons {
  display: flex;
  gap: 10px;
  order: 2;
}

.btn {
  padding: 10px 18px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  font-size: 15px;
  transition: all 0.3s ease;
  white-space: nowrap;
  text-align: center;
  border: none;
  cursor: pointer;
  display: inline-block; /* Ensure padding works */
  line-height: 1;
}

.btn-primary {
  background: linear-gradient(to right, #FFD700, #FFA500);
  color: var(--secondary-color);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  background: linear-gradient(to right, #FFA500, #FFD700);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--primary-color);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.btn-secondary:hover {
  background-color: #0000AA; /* Slightly lighter blue */
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.main-nav {
  background-color: var(--main-nav-bg);
  padding: 15px 0;
  min-height: 50px;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

.nav-link {
  color: var(--text-color-dark);
  text-decoration: none;
  padding: 8px 15px;
  margin: 0 5px;
  font-weight: bold;
  transition: color 0.3s ease, background-color 0.3s ease;
  white-space: nowrap;
  border-radius: 4px;
}

.nav-link:hover,
.nav-link.active {
  background-color: rgba(0, 0, 0, 0.1);
  color: var(--secondary-color);
}

/* Hamburger Menu (Desktop hidden) */
.hamburger-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 1001;
}

.hamburger-menu .bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
  margin-bottom: 5px;
  transition: all 0.3s ease;
}

.hamburger-menu .bar:last-child {
  margin-bottom: 0;
}

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

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

/* Footer Styles */
.site-footer {
  background-color: var(--secondary-color);
  color: var(--text-color-light);
  padding: 40px 20px 20px;
  font-size: 14px;
  line-height: 1.6;
}

.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: 250px;
}

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

.footer-col p {
  margin: 0;
  color: #CCC;
}

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

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

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

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
  color: #AAA;
}

/* Mobile Styles */
@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;
  }

  .site-header {
    box-sizing: border-box;
    max-width: 100%;
    overflow-x: hidden;
  }

  .header-top {
    padding: 10px 0;
    min-height: 50px;
    position: relative; /* For absolute logo */
  }

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

  .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 */
    font-size: 24px;
  }

  .hamburger-menu {
    display: block;
    order: 1;
    z-index: 1001;
  }

  .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: 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: var(--header-top-bg); /* Match header top background */
    justify-content: center;
    align-items: center;
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Account for 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); /* Position below fixed header and mobile buttons */
    left: 0;
    width: 280px;
    height: calc(100% - var(--header-offset));
    background-color: var(--secondary-color); /* Dark blue background for mobile menu */
    transform: translateX(-100%); /* Slide out of view */
    transition: transform 0.3s ease;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    z-index: 999;
    overflow-y: auto;
    padding: 0; /* Remove default padding for full height */
  }

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

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

  .nav-link {
    color: var(--text-color-light); /* Light text on dark background */
    width: 100%;
    padding: 12px 15px;
    margin: 0;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 16px;
  }

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

  .nav-link:hover,
  .nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--primary-color);
  }

  .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;
    transition: opacity 0.3s ease;
  }

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

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

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

/* Ensure color contrast for text on backgrounds */
/* header-top: var(--header-top-bg) #000055 (dark blue) -> logo (primary gold #FFD700) is good contrast */
/* main-nav: var(--main-nav-bg) #FFD700 (gold) -> nav-link (text-color-dark #000000) is good contrast */
/* btn-primary: gradient (gold/orange) -> color (secondary dark blue #00008B) is good contrast */
/* btn-secondary: var(--secondary-color) #00008B (dark blue) -> color (primary gold #FFD700) is good contrast */
/* footer: var(--secondary-color) #00008B (dark blue) -> text-color-light #FFFFFF or #CCC is good contrast */
/* mobile menu: var(--secondary-color) #00008B (dark blue) -> nav-link (text-color-light #FFFFFF) is good contrast */
/* 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;
  }
}