:root {
  --primary-color: #3366FF;
  --secondary-color: #FFCC00;
  --neon-primary: var(--primary-color);
  --neon-secondary: var(--secondary-color);
  --neon-accent: #FF00FF;
  --dark-bg-1: #0a0a0a;
  --dark-bg-2: #1a1a2e;
  --dark-bg-3: #16213e;
  --dark-bg-4: #0f3460;
  --text-color: #ffffff;
  --link-color: #cccccc;
  --link-hover-color: var(--neon-secondary);
  --neon-primary-rgb: 51, 102, 255;
  --neon-secondary-rgb: 255, 204, 0;
  --neon-accent-rgb: 255, 0, 255;
}

/* Base Reset & Body Padding for Fixed Header */
body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  background-color: #121212;
  color: var(--text-color);
  padding-top: 120px; /* Default desktop padding, adjusted by JS */
  transition: padding-top 0.3s ease;
}

body.no-scroll {
  overflow: hidden;
}

/* Universal Container */
.header-container, .nav-container, .footer-top-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Neon Glow Animations (as provided in prompt) */
@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(var(--neon-primary-rgb), 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(var(--neon-secondary-rgb), 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(var(--neon-accent-rgb), 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;
  }
}

/* Header - Desktop First */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  color: var(--text-color);
}

.header-top {
  background: linear-gradient(135deg, var(--dark-bg-1), var(--dark-bg-2), var(--dark-bg-3));
  padding: 10px 0;
  border-bottom: 2px solid;
  animation: theme-colors 4s ease-in-out infinite;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 40px;
}

.logo {
  font-size: 2.2em;
  font-weight: bold;
  text-decoration: none;
  color: var(--text-color);
  white-space: nowrap;
  padding: 0;
  margin: 0;
  animation: text-glow-flow 3s ease-in-out infinite alternate;
}

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

.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;
  transition: all 0.3s ease;
  font-weight: bold;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
}

.btn.theme-flow {
  animation: theme-colors 4s ease-in-out infinite;
}

.btn.rainbow-flow {
  animation: rainbow-border 3s linear infinite;
}

.btn:hover {
  animation-duration: 2s; /* hover时加快颜色变化速度 */
  transform: translateY(-2px);
  box-shadow: 0 0 20px currentColor, 0 0 30px currentColor;
}

.main-nav {
  background: linear-gradient(135deg, var(--dark-bg-2), var(--dark-bg-3), var(--dark-bg-4));
  padding: 10px 0;
  border-top: 2px solid;
  border-bottom: 2px solid;
  animation: theme-colors 4s ease-in-out infinite reverse; /* Different animation for contrast */
  display: flex; /* Desktop default */
  flex-direction: row; /* Desktop default */
}

.nav-container {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 25px;
  flex-wrap: wrap; /* Allow wrapping on smaller desktop screens */
}

.nav-link {
  color: var(--link-color);
  text-decoration: none;
  font-size: 1.1em;
  padding: 5px 0;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--link-hover-color);
  text-shadow: 0 0 5px var(--link-hover-color);
}

/* Mobile Specific Elements (Hidden on Desktop) */
.mobile-header-bar, .mobile-buttons-area, .hamburger-menu, .mobile-menu-overlay {
  display: none;
}

/* Footer */
.site-footer {
  background-color: #1c1c1c;
  color: #cccccc;
  padding: 40px 0 20px 0;
  font-size: 0.9em;
  border-top: 1px solid #333;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-bottom: 30px;
}

.footer-col h4 {
  color: var(--neon-secondary);
  font-size: 1.2em;
  margin-bottom: 15px;
  border-bottom: 1px solid rgba(255, 204, 0, 0.2);
  padding-bottom: 5px;
}

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

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

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

.footer-col a:hover {
  color: var(--neon-secondary);
}

.footer-logo {
  font-size: 1.8em;
  font-weight: bold;
  color: var(--neon-primary);
  text-decoration: none;
  display: block;
  margin-bottom: 15px;
}

.footer-description {
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
  margin-top: 10px;
}

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

.payment-icons img, .game-providers-icons img, .social-media-icons img {
  max-height: 50px;
  height: auto;
  width: auto;
  filter: grayscale(80%) brightness(120%);
  opacity: 0.7;
  transition: all 0.3s ease;
}

.payment-icons img:hover, .game-providers-icons img:hover, .social-media-icons img:hover {
  filter: grayscale(0%) brightness(100%);
  opacity: 1;
}

.footer-middle-sections {
  padding: 20px 20px;
  max-width: 1200px;
  margin: 0 auto 30px auto;
  border-top: 1px solid #333;
  padding-top: 30px;
}

.game-providers-section, .social-media-section {
  margin-bottom: 25px;
}

.game-providers-section h4, .social-media-section h4 {
  color: var(--neon-secondary);
  font-size: 1.2em;
  margin-bottom: 15px;
  border-bottom: 1px solid rgba(255, 204, 0, 0.2);
  padding-bottom: 5px;
}

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

.copyright {
  margin: 0;
  color: #999999;
}

/* Mobile Styles */
@media (max-width: 768px) {
  body {
    padding-top: 160px; /* Adjusted for mobile header height (mobile-header-bar + mobile-buttons-area) */
  }

  .header-container, .nav-container, .footer-top-grid, .footer-middle-sections, .footer-bottom {
    padding: 0 15px;
    max-width: none; /* Crucial: no max-width on mobile containers */
    width: 100%;
  }

  .site-header {
    flex-direction: column;
  }

  .header-top {
    display: none; /* Hide desktop header-top on mobile */
  }

  .mobile-header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: linear-gradient(135deg, var(--dark-bg-1), var(--dark-bg-2), var(--dark-bg-3));
    border-bottom: 2px solid;
    animation: theme-colors 4s ease-in-out infinite;
    width: 100%;
    box-sizing: border-box;
  }

  .mobile-logo {
    flex-grow: 1;
    text-align: center;
    font-size: 1.8em;
  }

  .hamburger-menu {
    display: block;
    width: 30px;
    height: 25px;
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1002;
    animation: alternate-colors 2s ease-in-out infinite alternate;
  }

  .hamburger-menu::before, .hamburger-menu::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--neon-primary);
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .hamburger-menu::before {
    top: 0;
    box-shadow: 0 0 5px var(--neon-primary), 0 0 10px var(--neon-primary);
  }

  .hamburger-menu::after {
    bottom: 0;
    box-shadow: 0 0 5px var(--neon-primary), 0 0 10px var(--neon-primary);
  }

  .hamburger-menu.active::before {
    transform: translateY(11px) rotate(45deg);
  }

  .hamburger-menu.active::after {
    transform: translateY(-11px) rotate(-45deg);
  }

  .hamburger-menu.active {
    border-color: transparent; /* Hide border on active */
    box-shadow: none;
  }

  .mobile-buttons-area {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 10px 15px;
    background: linear-gradient(135deg, var(--dark-bg-2), var(--dark-bg-3), var(--dark-bg-4));
    border-bottom: 2px solid;
    animation: theme-colors 4s ease-in-out infinite reverse;
    box-sizing: border-box;
    width: 100%;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 70%;
    max-width: 300px;
    height: 100%;
    background: linear-gradient(180deg, var(--dark-bg-1), var(--dark-bg-4));
    padding-top: 80px; /* Space for logo/hamburger */
    box-shadow: 5px 0 15px rgba(0, 0, 0, 0.5);
    transform: translateX(-100%);
    transition: transform 0.3s ease-out;
    z-index: 1001;
    overflow-y: auto;
    border-right: 2px solid;
    animation: theme-colors 4s ease-in-out infinite;
  }

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

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

  .nav-link {
    font-size: 1.2em;
    width: 100%;
    padding: 10px 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease-out;
  }

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

  .footer-top-grid {
    grid-template-columns: 1fr;
  }

  .footer-col {
    margin-bottom: 20px;
  }

  .footer-logo {
    text-align: center;
    margin-bottom: 10px;
  }
}