:root {
  --primary-color: #CC0000; /* Based on user's primary color */
  --secondary-color: #FFD700; /* Based on user's secondary color */
  --neon-primary: var(--primary-color); /* Intelligent choice */
  --neon-secondary: var(--secondary-color); /* Intelligent choice */
  --neon-accent: #FF6600; /* A vibrant accent for contrast */
  --dark-bg-1: #0a0a0a;
  --dark-bg-2: #1a1a2e;
  --dark-bg-3: #16213e;
  --text-color: #ffffff;
  --link-color: #cccccc;
  --link-hover-color: var(--neon-secondary);
  --header-height-desktop: 100px; /* Approximate combined height */
  --header-height-mobile: 140px; /* Approximate combined height */
}

/* Base styles for HTML elements */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--dark-bg-1);
  padding-top: var(--header-height-desktop); /* Default padding for desktop */
}

body.no-scroll {
  overflow: hidden;
}

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--link-hover-color);
}

ul {
  list-style: none;
}

/* Animations for dynamic neon effects */
@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: var(--text-color);
  }
  50% {
    text-shadow: 0 0 5px var(--neon-secondary), 0 0 10px var(--neon-secondary), 0 0 15px var(--neon-secondary);
    color: var(--text-color);
  }
  100% {
    text-shadow: 0 0 5px var(--neon-accent), 0 0 10px var(--neon-accent), 0 0 15px var(--neon-accent);
    color: var(--text-color);
  }
}

/* Header styles */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  min-height: var(--header-height-desktop);
  display: flex;
  flex-direction: column;
}

.header-container, .nav-container, .footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

.header-top {
  background: linear-gradient(135deg, var(--dark-bg-1), var(--dark-bg-2));
  padding: 15px 0;
  border-bottom: 2px solid;
  animation: theme-colors 4s ease-in-out infinite;
}

.header-top .header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 2.2em;
  font-weight: bold;
  color: var(--text-color);
  text-transform: uppercase;
  letter-spacing: 2px;
  animation: text-glow-flow 3s ease-in-out infinite alternate;
  text-decoration: none;
}

.logo.neon-pulse {
  animation: text-glow-flow 3s ease-in-out infinite alternate, pulse-glow 2s ease-in-out infinite alternate;
}

.desktop-nav-buttons {
  display: flex;
  gap: 15px;
  align-items: center;
}

.btn {
  position: relative;
  background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
  padding: 10px 25px;
  color: var(--text-color);
  text-decoration: none;
  border-radius: 5px;
  border: 2px solid;
  text-shadow: 0 0 5px var(--text-color), 0 0 10px var(--neon-primary);
  transition: all 0.3s ease;
  font-weight: bold;
  text-align: center;
}

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

.btn.alternate-glow {
  animation: alternate-colors 2s ease-in-out infinite alternate;
}

.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));
  padding: 10px 0;
  border-bottom: 2px solid;
  border-top: 2px solid;
  animation: rainbow-border 3s linear infinite;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}

.main-nav .nav-container {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 25px;
}

.nav-link {
  font-size: 1.1em;
  font-weight: 600;
  color: var(--link-color);
  padding: 8px 15px;
  transition: color 0.3s ease, background-color 0.3s ease, text-shadow 0.3s ease;
  border-radius: 3px;
}

.nav-link:hover {
  color: var(--neon-secondary);
  background-color: rgba(255, 255, 255, 0.05);
  text-shadow: 0 0 5px var(--neon-secondary);
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  width: 30px;
  height: 25px;
  position: relative;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
  padding: 2px 0;
  z-index: 1002;
}

.hamburger-menu .bar {
  width: 100%;
  height: 3px;
  background-color: var(--text-color);
  border-radius: 2px;
  transition: all 0.3s ease;
  box-shadow: 0 0 5px var(--neon-primary);
}

.hamburger-menu.neon-pulse {
  animation: pulse-glow 2s ease-in-out infinite alternate;
}

.hamburger-menu.active .bar:nth-child(1) {
  transform: translateY(11px) rotate(45deg);
}

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

.hamburger-menu.active .bar:nth-child(3) {
  transform: translateY(-11px) rotate(-45deg);
}

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

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

/* Footer styles */
.site-footer {
  background: linear-gradient(135deg, #0a0a0a, #1a1a2e, #16213e);
  color: var(--link-color);
  padding: 40px 0 20px;
  font-size: 0.9em;
  border-top: 2px solid rgba(var(--neon-primary-rgb), 0.2);
}

.footer-top-section {
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(var(--link-color-rgb), 0.1);
}

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

.footer-col h4 {
  color: var(--text-color);
  font-size: 1.1em;
  margin-bottom: 15px;
  font-weight: 600;
}

.footer-col ul {
  padding: 0;
}

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

.footer-col ul li a {
  color: var(--link-color);
}

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

.footer-logo {
  font-size: 1.8em;
  font-weight: bold;
  color: var(--text-color);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 15px;
  display: block;
}

.footer-description {
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

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

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

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

.footer-middle-section {
  padding: 30px 0;
  border-bottom: 1px solid rgba(var(--link-color-rgb), 0.1);
}

.footer-middle-section .footer-container {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.game-providers-section h4,
.social-media-section h4 {
  color: var(--text-color);
  font-size: 1.1em;
  margin-bottom: 15px;
  font-weight: 600;
}

.footer-bottom-section {
  padding-top: 20px;
}

.footer-bottom-section .footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.copyright {
  margin: 0;
  font-size: 0.9em;
  text-align: center;
  flex-grow: 1;
}

.footer-legal-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin: 0;
}

.footer-legal-nav li a {
  color: var(--link-color);
  font-size: 0.9em;
}

/* Media Queries for Responsive Design */
@media (max-width: 1024px) {
  .main-nav .nav-container {
    gap: 15px;
  }
  .nav-link {
    padding: 8px 10px;
  }
}

@media (max-width: 768px) {
  body {
    padding-top: var(--header-height-mobile); /* Adjusted padding for mobile */
  }

  .site-header {
    min-height: auto;
  }

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

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

  .hamburger-menu {
    display: flex;
    order: 1;
  }

  .logo {
    order: 2;
    flex-grow: 1;
    text-align: center;
    font-size: 1.8em;
  }

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

  .mobile-nav-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 10px 15px;
    background: linear-gradient(135deg, var(--dark-bg-1), var(--dark-bg-2));
    border-bottom: 2px solid;
    animation: theme-colors 4s ease-in-out infinite;
  }

  .mobile-nav-buttons .btn {
    padding: 8px 20px;
    font-size: 0.9em;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 70%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark-bg-3), #0f3460);
    padding-top: calc(var(--header-height-mobile) + 20px); /* Push menu content down */
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.5);
    transform: translateX(-100%); /* Off-screen by default */
    transition: transform 0.3s ease-in-out;
    animation: none; /* Disable desktop border animation */
    border: none;
    overflow-y: auto;
    z-index: 1001;
  }

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

  .main-nav .nav-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 0 20px;
    width: 100%; /* Important: no max-width on mobile containers */
    max-width: none;
  }

  .nav-link {
    width: 100%;
    padding: 12px 15px;
    font-size: 1.2em;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

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

  .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;
    transition: opacity 0.3s ease-in-out;
    opacity: 0;
  }

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

  .footer-container {
    grid-template-columns: 1fr;
    padding: 0 15px;
  }

  .footer-bottom-section .footer-container {
    flex-direction: column;
    text-align: center;
  }

  .footer-legal-nav {
    margin-top: 10px;
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: 1.6em;
  }
  .mobile-nav-buttons .btn {
    padding: 6px 15px;
    font-size: 0.85em;
  }
}

/* Helper for RGB conversion for rgba() in theme-colors animation */
:root {
  --neon-primary-rgb: 204, 0, 0;
  --neon-secondary-rgb: 255, 215, 0;
  --neon-accent-rgb: 255, 102, 0;
  --link-color-rgb: 204, 204, 204;
}