:root {
  /* Website primary/secondary colors for intelligent choice */
  --site-primary: #003366;
  --site-secondary: #FFD700;

  /* High saturation, high brightness fluorescent colors for neon effects */
  --neon-primary: var(--site-secondary); /* Gold, from site secondary */
  --neon-secondary: #00FFFF; /* Cyan */
  --neon-accent: #FF00FF; /* Magenta */
  --neon-header-top-glow: var(--neon-primary); /* Gold glow for header-top */
  --neon-main-nav-glow: #FF6600; /* Orange glow for main-nav */

  /* Backgrounds */
  --dark-bg-1: #0a0a0a;
  --dark-bg-2: #1a1a2e;
  --dark-bg-3: #16213e;
}

/* Dynamic Neon Animations */
@keyframes rainbow-border {
  0% {
    border-color: #ff0000;
    box-shadow: 0 0 10px #ff0000, 0 0 20px #ff0000;
  }
  16.6% {
    border-color: #ff8000;
    box-shadow: 0 0 10px #ff8000, 0 0 20px #ff8000;
  }
  33.3% {
    border-color: #ffff00;
    box-shadow: 0 0 10px #ffff00, 0 0 20px #ffff00;
  }
  50% {
    border-color: #00ff00;
    box-shadow: 0 0 10px #00ff00, 0 0 20px #00ff00;
  }
  66.6% {
    border-color: #0000ff;
    box-shadow: 0 0 10px #0000ff, 0 0 20px #0000ff;
  }
  83.3% {
    border-color: #8000ff;
    box-shadow: 0 0 10px #8000ff, 0 0 20px #8000ff;
  }
  100% {
    border-color: #ff0000;
    box-shadow: 0 0 10px #ff0000, 0 0 20px #ff0000;
  }
}

@keyframes hue-spin {
  0% {
    filter: hue-rotate(0deg);
    box-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary);
  }
  100% {
    filter: hue-rotate(360deg);
    box-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary);
  }
}

@keyframes alternate-colors {
  0% {
    border-color: var(--neon-primary);
    box-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary);
  }
  100% {
    border-color: var(--neon-secondary);
    box-shadow: 0 0 10px var(--neon-secondary), 0 0 20px var(--neon-secondary);
  }
}

@keyframes gradient-flow {
  0% {
    background-position: 0% 50%;
    box-shadow: 0 0 10px #ff0000, 0 0 20px #ff8000;
  }
  50% {
    background-position: 100% 50%;
    box-shadow: 0 0 10px #00ffff, 0 0 20px #0000ff;
  }
  100% {
    background-position: 0% 50%;
    box-shadow: 0 0 10px #ff0000, 0 0 20px #ff8000;
  }
}

@keyframes random-glow {
  0% {
    border-color: #ff00ff;
    box-shadow: 0 0 20px #ff00ff;
  }
  20% {
    border-color: #00ffff;
    box-shadow: 0 0 20px #00ffff;
  }
  40% {
    border-color: #ffff00;
    box-shadow: 0 0 20px #ffff00;
  }
  60% {
    border-color: #00ff00;
    box-shadow: 0 0 20px #00ff00;
  }
  80% {
    border-color: #ff0000;
    box-shadow: 0 0 20px #ff0000;
  }
  100% {
    border-color: #ff00ff;
    box-shadow: 0 0 20px #ff00ff;
  }
}

@keyframes theme-colors {
  0%, 100% {
    border-color: var(--neon-primary);
    box-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary), inset 0 0 10px rgba(255, 215, 0, 0.3);
  }
  33% {
    border-color: var(--neon-secondary);
    box-shadow: 0 0 10px var(--neon-secondary), 0 0 20px var(--neon-secondary), inset 0 0 10px rgba(0, 255, 255, 0.3);
  }
  66% {
    border-color: var(--neon-accent);
    box-shadow: 0 0 10px var(--neon-accent), 0 0 20px var(--neon-accent), inset 0 0 10px rgba(255, 0, 255, 0.3);
  }
}

@keyframes neon-flicker {
  0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
    opacity: 1;
    box-shadow: 0 0 10px currentColor, 0 0 20px currentColor, 0 0 30px currentColor, inset 0 0 15px currentColor;
  }
  20%, 24%, 55% {
    opacity: 0.8;
    box-shadow: 0 0 5px currentColor, 0 0 10px currentColor, 0 0 15px currentColor, inset 0 0 10px currentColor;
  }
}

@keyframes pulse-glow {
  from {
    box-shadow: 0 0 5px currentColor, 0 0 10px currentColor;
  }
  to {
    box-shadow: 0 0 15px currentColor, 0 0 30px currentColor, 0 0 45px currentColor;
  }
}

@keyframes led-blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0.3; }
}

@keyframes text-glow-flow {
  0% {
    text-shadow: 0 0 5px var(--neon-primary), 0 0 10px var(--neon-primary), 0 0 15px var(--neon-primary);
    color: #ffffff;
  }
  50% {
    text-shadow: 0 0 5px var(--neon-secondary), 0 0 10px var(--neon-secondary), 0 0 15px var(--neon-secondary);
    color: #ffffff;
  }
  100% {
    text-shadow: 0 0 5px var(--neon-accent), 0 0 10px var(--neon-accent), 0 0 15px var(--neon-accent);
    color: #ffffff;
  }
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Arial', sans-serif;
  background-color: var(--dark-bg-1);
  color: #f0f0f0;
  line-height: 1.6;
}

body.no-scroll {
  overflow: hidden;
}

/* Site Header (Desktop-first) */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  border-bottom: 2px solid;
  animation: theme-colors 4s ease-in-out infinite; /* Dynamic border color */
}

.site-header .header-top {
  background: linear-gradient(135deg, var(--dark-bg-1), var(--dark-bg-2));
  padding: 15px 0;
  border-bottom: 2px solid var(--neon-header-top-glow);
  box-shadow: 
    0 0 10px var(--neon-header-top-glow),
    0 0 20px var(--neon-header-top-glow),
    inset 0 0 15px rgba(255, 215, 0, 0.1);
  display: flex;
  align-items: center;
}

.site-header .header-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.site-header .logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--neon-primary);
  text-decoration: none;
  white-space: nowrap;
  padding-right: 20px; /* Space from button/hamburger */
  animation: text-glow-flow 3s ease-in-out infinite alternate, pulse-glow 2s ease-in-out infinite alternate;
}

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

.site-header .btn {
  position: relative;
  background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
  padding: 12px 25px;
  color: #ffffff;
  text-decoration: none;
  border-radius: 5px;
  border: 2px solid;
  animation: theme-colors 4s ease-in-out infinite; /* Dynamic border color */
  text-shadow: 
    0 0 5px #ffffff,
    0 0 10px var(--neon-primary);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.site-header .btn:hover {
  animation-duration: 2s; /* hover时加快颜色变化速度 */
  transform: translateY(-2px);
}

.site-header .main-nav {
  background: linear-gradient(135deg, var(--dark-bg-2), var(--dark-bg-3));
  padding: 10px 0;
  border-top: 2px solid var(--neon-main-nav-glow);
  box-shadow:
    0 0 10px var(--neon-main-nav-glow),
    0 0 20px var(--neon-main-nav-glow),
    inset 0 0 15px rgba(255, 102, 0, 0.1);
  display: flex;
}

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

.site-header .nav-link {
  color: #f0f0f0;
  text-decoration: none;
  padding: 10px 15px;
  font-size: 16px;
  transition: color 0.3s ease, text-shadow 0.3s ease;
  white-space: nowrap;
}

.site-header .nav-link:hover,
.site-header .nav-link.active {
  color: var(--neon-primary);
  text-shadow: 0 0 5px var(--neon-primary), 0 0 10px var(--neon-primary);
}

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

.hamburger-menu span {
  display: block;
  position: absolute;
  height: 3px;
  width: 100%;
  background: var(--neon-primary);
  border-radius: 2px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: 0.25s ease-in-out;
  box-shadow: 0 0 5px var(--neon-primary);
}

.hamburger-menu span:nth-child(1) { top: 0px; }
.hamburger-menu span:nth-child(2) { top: 10px; }
.hamburger-menu span:nth-child(3) { top: 20px; }

/* Mobile Nav Buttons (Hidden on Desktop) */
.mobile-nav-buttons {
  display: none;
}

/* Mobile Menu Overlay (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;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

/* Footer Styles */
.site-footer {
  background-color: var(--dark-bg-2);
  color: #cccccc;
  padding: 40px 0 20px 0;
  font-size: 14px;
  border-top: 1px solid #333;
}

.site-footer .footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-footer .footer-top-section {
  padding-bottom: 30px;
}

.site-footer .footer-top-section > .footer-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.site-footer .footer-col h4 {
  color: #f0f0f0;
  font-size: 18px;
  margin-bottom: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 8px;
}

.site-footer .footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--site-secondary);
  text-decoration: none;
  display: block;
  margin-bottom: 15px;
}

.site-footer .footer-description {
  line-height: 1.8;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.site-footer .footer-nav-col ul {
  list-style: none;
}

.site-footer .footer-nav-col ul li a {
  color: #cccccc;
  text-decoration: none;
  display: block;
  padding: 5px 0;
  transition: color 0.3s ease;
}

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

.site-footer .payment-icons,
.site-footer .game-providers-icons,
.site-footer .social-media-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

.site-footer .payment-icons img,
.site-footer .game-providers-icons img,
.site-footer .social-media-icons img {
  max-height: 50px;
  height: auto;
  width: auto;
  object-fit: contain;
}

.site-footer .footer-middle-section {
  padding: 20px 0;
  border-top: 1px solid #333;
  border-bottom: 1px solid #333;
  margin-bottom: 20px;
}

.site-footer .game-providers-section,
.site-footer .social-media-section {
  margin-bottom: 20px;
}

.site-footer .game-providers-section:last-child,
.site-footer .social-media-section:last-child {
  margin-bottom: 0;
}

.site-footer .copyright {
  text-align: center;
  color: #aaaaaa;
  font-size: 13px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .site-header .header-container,
  .site-header .nav-container,
  .site-footer .footer-container {
    padding: 0 15px;
  }
}

@media (max-width: 768px) {
  /* Header */
  .site-header {
    flex-direction: column;
    align-items: stretch;
  }

  .site-header .header-top {
    padding: 10px 0;
  }

  .site-header .header-container {
    padding: 0 15px;
    width: 100%;
    max-width: none;
    justify-content: space-between;
  }

  .site-header .logo {
    font-size: 24px;
    flex-grow: 1;
    text-align: center;
    padding-right: 0;
  }
  
  .site-header .desktop-nav-buttons {
    display: none;
  }

  .site-header .hamburger-menu {
    display: block;
    order: -1; /* Move to the left */
    margin-right: auto; /* Push logo to center */
    align-self: center;
  }

  .hamburger-menu.active span:nth-child(1) { top: 10px; transform: rotate(135deg); }
  .hamburger-menu.active span:nth-child(2) { opacity: 0; left: -60px; }
  .hamburger-menu.active span:nth-child(3) { top: 10px; transform: rotate(-135deg); }

  .mobile-nav-buttons {
    display: flex;
    justify-content: center;
    padding: 10px 15px;
    background: linear-gradient(135deg, var(--dark-bg-1), var(--dark-bg-2));
    border-bottom: 2px solid var(--neon-header-top-glow);
    box-shadow:
      0 0 5px var(--neon-header-top-glow),
      0 0 10px var(--neon-header-top-glow),
      inset 0 0 5px rgba(255, 215, 0, 0.1);
    gap: 10px;
  }
  
  .mobile-nav-buttons .btn {
    padding: 10px 20px;
    font-size: 14px;
  }

  .site-header .main-nav {
    display: none; /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: linear-gradient(180deg, var(--dark-bg-2), var(--dark-bg-3));
    flex-direction: column;
    justify-content: flex-start;
    transform: translateX(-100%); /* Start off-screen */
    transition: transform 0.3s ease-out;
    padding-top: 80px; /* Space for fixed header content */
    border-right: 2px solid var(--neon-main-nav-glow);
    box-shadow:
      5px 0 10px var(--neon-main-nav-glow),
      10px 0 20px var(--neon-main-nav-glow);
  }

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

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

  .site-header .nav-link {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

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

  /* Footer */
  .site-footer .footer-top-section > .footer-container {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .site-footer .footer-logo {
    text-align: center;
  }

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

  .site-footer .footer-col h4 {
    text-align: center;
  }

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

  .site-footer .payment-methods .payment-icons,
  .site-footer .game-providers-section .game-providers-icons,
  .site-footer .social-media-section .social-media-icons {
    justify-content: center;
  }
}

/* Padding for main content to avoid fixed header overlap */
body {
  padding-top: 130px; /* Adjust based on combined header-top and main-nav height */
}

@media (max-width: 768px) {
  body {
    padding-top: 110px; /* Adjust for mobile header + button area height */
  }
}