/* CSS Variables for Theme System */
:root {
  /* Dark Theme Colors */
  --bg-primary: #0e0e0e;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2d2d2d;
  --text-primary: #ffffff;
  --text-secondary: #b3b3b3;
  --text-muted: #888888;
  --accent-primary: #ffd166;
  --accent-secondary: #06d6a0;
  --accent-hover: #e6b800;
  --border-color: #333333;
  --shadow-color: rgba(0, 0, 0, 0.3);

  /* Spacing - Optimized for smaller sections */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 2.5rem;
  --space-3xl: 3rem;

  /* Typography - Optimized font weights */
  --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Performance optimizations */
* {
  will-change: auto;
}

/* Reset and Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  line-height: 1.6;
  /* Performance optimizations */
  text-rendering: optimizeSpeed;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom scrollbar for webkit browsers */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Container utility */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
}

/* Navigation */
.navbar {
  position: static;
  background: rgba(14, 14, 14, 0.98);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

/* Ensure navbar stays static even with scrolled class */
.navbar.scrolled {
  position: static;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.logo-text {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width var(--transition-normal);
}

.nav-link:hover::after {
  width: 100%;
}


.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: var(--space-sm);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
  min-height: 50vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(255, 209, 102, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(6, 214, 160, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-content {
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  line-height: 1.2;
}

.title-highlight {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.title-subtitle {
  display: block;
  color: var(--text-secondary);
  font-size: var(--font-size-3xl);
  margin-top: var(--space-sm);
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.game-preview {
  background: var(--bg-tertiary);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: 0 20px 40px var(--shadow-color);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: transform var(--transition-normal);
}

.game-preview:hover {
  transform: translateY(-5px);
}

.preview-icon {
  font-size: 4rem;
  margin-bottom: var(--space-lg);
  display: block;
}

.preview-placeholder p {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.preview-placeholder small {
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  box-shadow: 0 4px 15px rgba(255, 209, 102, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 209, 102, 0.4);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  transform: translateY(-2px);
}

.btn-icon {
  font-size: var(--font-size-lg);
}

/* Game Section */
.game-section,
.features,
.faq {
  padding: var(--space-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Game Container */
.game-container {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  border: 1px solid var(--border-color);
}

.game-wrapper {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.game-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 49%, rgba(255, 209, 102, 0.05) 50%, transparent 51%);
  pointer-events: none;
}

#game-frame {
  width: 100%;
  height: 600px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--bg-primary);
}

.game-info {
  display: grid;
  gap: var(--space-lg);
}

.info-card {
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border: 1px solid var(--border-color);
  text-align: center;
}

.info-card h3 {
  color: var(--accent-primary);
  margin-bottom: var(--space-md);
}

.info-card p {
  color: var(--text-secondary);
}

/* How to Play Section */
.how-to-play {
  margin-top: var(--space-xl);
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.how-to-play h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--accent-primary);
  text-align: center;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow-color);
  border-color: var(--accent-primary);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-lg);
  display: block;
}

.feature-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* FAQ Grid */
.faq-grid {
  display: grid;
  gap: var(--space-xl);
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--border-color);
}

.faq-question {
  color: var(--accent-primary);
  margin-bottom: var(--space-md);
  font-size: var(--font-size-lg);
}

.faq-answer {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.footer-logo .logo-icon {
  font-size: var(--font-size-xl);
}

.footer-logo .logo-text {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-section h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-lg);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero {
    min-height: 40vh;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }

  .hero-visual {
    order: -1;
  }

  .game-preview {
    padding: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .title-subtitle {
    font-size: var(--font-size-2xl);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 250px;
    justify-content: center;
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  #game-frame {
    height: 500px;
  }

  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }

  .faq-grid {
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--space-xl) 0;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .title-subtitle {
    font-size: var(--font-size-xl);
  }

  .game-preview {
    padding: var(--space-lg);
  }

  .preview-icon {
    font-size: 3rem;
  }

  #game-frame {
    height: 400px;
  }

  .feature-card,
  .faq-item {
    padding: var(--space-lg);
  }
}

/* Focus states for accessibility */
.btn:focus,
.nav-link:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Game Section */
.game-container {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  border: 1px solid var(--border-color);
}

.game-wrapper {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.game-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 49%, rgba(255, 107, 53, 0.05) 50%, transparent 51%);
  pointer-events: none;
}


#game-frame {
  width: 100%;
  height: 700px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  /* Performance optimizations */
  transform: translateZ(0);
  will-change: transform;
}

.game-info {
  display: grid;
  gap: var(--space-lg);
}

.info-card {
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border: 1px solid var(--border-color);
  text-align: center;
}

.info-card h3 {
  color: var(--accent-primary);
  margin-bottom: var(--space-md);
}

.info-card p {
  color: var(--text-secondary);
}

/* Instructions Grid */
.instructions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.instruction-card {
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.instruction-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px var(--shadow-color);
  border-color: var(--accent-primary);
}

.instruction-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
  display: block;
}

.instruction-card h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.instruction-card p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.5;
}


.feature-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow-color);
  border-color: var(--accent-primary);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-lg);
  display: block;
}

.feature-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.footer-logo .logo-icon {
  font-size: var(--font-size-xl);
}

.footer-logo .logo-text {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-section h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-lg);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero {
    min-height: 40vh;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }

  .hero-visual {
    order: -1;
  }

  .game-preview {
    padding: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .title-subtitle {
    font-size: var(--font-size-2xl);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 250px;
    justify-content: center;
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  #game-frame {
    height: 400px;
  }

  .instructions-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--space-xl) 0;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .title-subtitle {
    font-size: var(--font-size-xl);
  }

  .game-preview {
    padding: var(--space-lg);
  }

  .preview-icon {
    font-size: 3rem;
  }

  #game-frame {
    height: 300px;
  }

  .instruction-card,
  .feature-card {
    padding: var(--space-lg);
  }
}

/* Dark theme specific enhancements */
@media (prefers-color-scheme: dark) {
  body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
  }
}

  /* Print styles */
@media print {
    .navbar,.footer,.btn,.theme-toggle{display:none!important}body{background:#fff;color:#000}.hero,.game-section,.how-to-play,.features{background:#fff;color:#000}
  }

/* Focus states for accessibility */
.btn:focus,
.nav-link:focus,
.theme-toggle:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #ffffff;
    --text-secondary: #ffffff;
  }
}

/* Performance optimizations */
.game-wrapper,
.feature-card,
.instruction-card {
  will-change: transform;
}

#game-frame {
  will-change: auto;
}

/* Loading animation for game */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.game-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 10, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.game-wrapper.loading::after {
  opacity: 1;
}

/* Utility classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}