:root {
  --neon-primary: #ff8a00;
  --neon-secondary: #0066ff;
  --dark-bg: #0a0a0a;
  --card-bg: #151515;
  --gradient: linear-gradient(
    45deg,
    var(--neon-primary),
    var(--neon-secondary)
  );
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  background: var(--dark-bg);
  color: #fff;
  overflow-x: hidden;
}

/* Navbar */
.navbar {
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(
      90deg,
      transparent,
      var(--neon-primary),
      transparent
    )
    1;
  position: fixed;
  width: 100%;
  z-index: 1000;
  padding: 1rem 5%;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 2rem;
  font-weight: 700;
}

.logo span {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: glow 3s ease-in-out infinite;
}

.nav-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.logo a {
  text-decoration: none;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 2rem;
  font-weight: 700;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 80px;
  background: radial-gradient(
      circle at 20% 50%,
      rgba(255, 138, 0, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 80%,
      rgba(0, 102, 255, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 40% 20%,
      rgba(255, 138, 0, 0.1) 0%,
      transparent 50%
    ),
    linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #0a0a0a 100%);
  background-size: 100% 100%, 100% 100%, 100% 100%, 100% 100%;
  animation: gradientShift 15s ease infinite;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle 2px at 20% 30%,
      rgba(255, 138, 0, 0.5) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle 3px at 80% 70%,
      rgba(0, 102, 255, 0.5) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle 2px at 50% 50%,
      rgba(255, 138, 0, 0.3) 0%,
      transparent 50%
    );
  animation: sparkle 8s linear infinite;
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  padding: 2rem;
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  animation: slideUp 1s ease;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: #ccc;
}

.hero-description {
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
}

.features {
  margin: 2rem 0;
  padding: 2rem;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 15px;
}

.features h2 {
  color: var(--neon-primary);
  margin-bottom: 1.5rem;
  text-align: center;
}

.features ul {
  list-style: none;
}

.features li {
  margin-bottom: 1rem;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.features strong {
  color: var(--neon-primary);
  min-width: 180px;
}

.cta-section {
  text-align: center;
  margin-top: 2rem;
}

.cta-section p {
  margin-bottom: 1.5rem;
}

/* Video Container */
.video-container {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  max-width: 100%;
  width: 560px;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Breadcrumb Navigation */
.breadcrumb-nav {
  padding: 90px 5% 20px;
  background: var(--dark-bg);
}

.breadcrumb-container {
  max-width: 1400px;
  margin: 0 auto;
}

.breadcrumb-container ol {
  list-style: none;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.breadcrumb-container li {
  display: inline;
  color: #ccc;
}

.breadcrumb-container li:first-child a {
  color: var(--neon-primary);
  text-decoration: none;
}

.breadcrumb-container li:first-child a:hover {
  text-decoration: underline;
}

/* Game Grid */
.games-section {
  padding: 5rem 5%;
  background: radial-gradient(
      circle at 10% 30%,
      rgba(255, 138, 0, 0.05) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 90% 70%,
      rgba(0, 102, 255, 0.05) 0%,
      transparent 50%
    ),
    linear-gradient(180deg, #0a0a0a 0%, #151515 100%);
  position: relative;
}

.intro-section {
  max-width: 1400px;
  margin: 0 auto 3rem;
  padding: 2rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.intro-text {
  line-height: 1.8;
  color: #ddd;
  margin-bottom: 1.5rem;
}

.intro-title {
  color: var(--neon-primary);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.intro-description {
  line-height: 1.8;
  color: #ddd;
  margin-bottom: 1.5rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-item h4 {
  color: var(--neon-secondary);
  margin-bottom: 0.5rem;
}

.feature-item p {
  color: #bbb;
  font-size: 0.9rem;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--neon-primary);
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* Two Column Layout */
.games-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  max-width: 1600px;
  margin: 2rem auto 0;
  padding: 0 2rem;
  /* Performance optimization */
  contain: layout style paint;
}

.games-column {
  min-width: 0;
}

/* Sidebar Styles */
.sidebar-content {
  margin: 0;
  position: sticky;
  top: 100px;
  align-self: start;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  padding: 2rem;
  border-radius: 20px;
  border: 2px solid;
  border-image: linear-gradient(
      135deg,
      rgba(255, 138, 0, 0.3),
      rgba(0, 102, 255, 0.3)
    )
    1;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4),
    inset 0 0 60px rgba(255, 138, 0, 0.1);
  /* Performance optimization */
  transform: translateZ(0);
  will-change: position;
}

.sidebar-title {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--neon-primary);
}

.sidebar-text {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #ccc;
  margin-bottom: 1rem;
}

/* Ad Container Styles */
.ad-container {
  margin: 1.5rem 0;
  display: flex;
  justify-content: center;
  width: 100%;
}

.ad-placeholder {
  width: 336px;
  height: 280px;
  background: linear-gradient(
    135deg,
    rgba(255, 138, 0, 0.1) 0%,
    rgba(0, 102, 255, 0.1) 100%
  );
  border: 2px solid rgba(255, 138, 0, 0.5);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 40px rgba(255, 138, 0, 0.15),
    inset 0 0 60px rgba(255, 138, 0, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  /* Safari fallback */
  -webkit-border-radius: 15px;
}

.ad-placeholder::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(
    135deg,
    rgba(255, 138, 0, 0.5),
    rgba(0, 102, 255, 0.5)
  );
  border-radius: 15px;
  -webkit-border-radius: 15px;
  opacity: 1;
  transition: opacity 0.4s ease;
  z-index: -1;
  pointer-events: none;
}

.ad-placeholder::after {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(
    45deg,
    var(--neon-primary),
    var(--neon-secondary),
    var(--neon-primary)
  );
  border-radius: 15px;
  -webkit-border-radius: 15px;
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -2;
  animation: adGlow 3s ease-in-out infinite;
  pointer-events: none;
}

.ad-placeholder:hover {
  transform: translateY(-4px) scale(1.02);
  -webkit-transform: translateY(-4px) scale(1.02);
  border-color: rgba(255, 138, 0, 0.8);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5), 0 0 60px rgba(255, 138, 0, 0.3),
    0 0 80px rgba(0, 102, 255, 0.2), inset 0 0 80px rgba(255, 138, 0, 0.1);
}

.ad-placeholder:hover::before {
  background: linear-gradient(
    135deg,
    rgba(255, 138, 0, 0.8),
    rgba(0, 102, 255, 0.8)
  );
}

.ad-placeholder:hover::after {
  opacity: 0.3;
}

.ad-label {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
  padding: 4px 8px;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 4px;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 138, 0, 0.3);
}

@keyframes adGlow {
  0%,
  100% {
    opacity: 0;
  }
  50% {
    opacity: 0.2;
  }
}

.sidebar-section-title {
  color: var(--neon-secondary);
  margin: 1.5rem 0 1rem;
  font-size: 1rem;
}

.category-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.category-card {
  padding: 1rem;
  border-radius: 12px;
  border: 2px solid;
  transition: all 0.3s ease;
}

.category-orange {
  background: linear-gradient(
    135deg,
    rgba(255, 138, 0, 0.1),
    rgba(255, 138, 0, 0.05)
  );
  border-color: rgba(255, 138, 0, 0.4);
  box-shadow: 0 4px 20px rgba(255, 138, 0, 0.1);
}

.category-blue {
  background: linear-gradient(
    135deg,
    rgba(0, 102, 255, 0.1),
    rgba(0, 102, 255, 0.05)
  );
  border-color: rgba(0, 102, 255, 0.4);
  box-shadow: 0 4px 20px rgba(0, 102, 255, 0.1);
}

.category-card:hover {
  transform: translateX(5px);
  box-shadow: 0 6px 30px currentColor;
}

.category-orange:hover {
  box-shadow: 0 6px 30px rgba(255, 138, 0, 0.3);
}

.category-blue:hover {
  box-shadow: 0 6px 30px rgba(0, 102, 255, 0.3);
}

.category-title {
  color: var(--neon-primary);
  margin-bottom: 0.3rem;
  font-size: 0.9rem;
}

.category-text {
  color: #ccc;
  font-size: 0.8rem;
  line-height: 1.4;
}

.faq-items {
  margin-top: 1rem;
}

.faq-item {
  margin-bottom: 1.2rem;
}

.faq-question {
  color: var(--neon-primary);
  margin-bottom: 0.3rem;
  font-size: 0.85rem;
}

.faq-answer {
  color: #ccc;
  font-size: 0.75rem;
  line-height: 1.4;
}

.game-card {
  background: var(--card-bg);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid transparent;
  position: relative;
  background-clip: padding-box;
}

.game-card::before {
  content: "";
  position: absolute;
  inset: -2px;
  z-index: -1;
  background: linear-gradient(
    45deg,
    var(--neon-primary),
    var(--neon-secondary),
    var(--neon-primary)
  );
  border-radius: 20px;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.game-card:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 20px 40px rgba(255, 138, 0, 0.3),
    0 0 60px rgba(0, 102, 255, 0.2);
}

.game-card:hover::before {
  opacity: 1;
}

.game-image {
  width: 100%;
  height: 280px;
  object-fit: cover;
  content-visibility: auto;
}

/* Optimize all game images */
img[loading="lazy"] {
  content-visibility: auto;
}

.game-info {
  padding: 1.5rem;
}

.game-title {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--neon-primary);
}

.game-desc {
  color: #999;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.play-btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  background: linear-gradient(135deg, #ff8a00 0%, #ff6a00 50%, #0066ff 100%);
  color: white;
  text-decoration: none;
  border-radius: 25px;
  font-weight: 600;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(255, 138, 0, 0.3);
}

.play-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.5s ease;
}

.play-btn:hover {
  transform: translateY(-3px) scale(1.08);
  box-shadow: 0 8px 30px rgba(255, 138, 0, 0.5), 0 0 40px rgba(0, 102, 255, 0.3);
}

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

.play-btn:active {
  transform: translateY(-1px) scale(1.05);
}

/* Animations */
@keyframes glow {
  0%,
  100% {
    text-shadow: 0 0 10px rgba(255, 138, 0, 0.5);
  }
  50% {
    text-shadow: 0 0 20px rgba(0, 102, 255, 0.8);
  }
}

@keyframes slideUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes sparkle {
  0% {
    transform: translate(0, 0) scale(0);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translate(var(--sparkle-x, 100px), var(--sparkle-y, 100px))
      scale(1);
    opacity: 0;
  }
}

/* Game Modal */
.game-modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(5px);
}

.game-modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.game-modal-content {
  background-color: #0a0a0a;
  margin: auto;
  padding: 0;
  border: 1px solid var(--neon-primary);
  width: 100%;
  max-width: 100%;
  height: 100vh;
  border-radius: 0;
  box-shadow: 0 0 50px rgba(255, 138, 0, 0.3);
  animation: modalFadeIn 0.3s ease;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

/* Desktop - có thể tùy chỉnh kích thước */
@media (min-width: 1024px) {
  .game-modal-content {
    width: 85%;
    max-width: 1400px;
    height: 80vh;
    border-radius: 15px;
    margin: 10vh auto;
    padding-bottom: 2px;
  }
}

.game-modal-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 138, 0, 0.1);
}

.game-modal-title {
  color: var(--neon-primary);
  font-size: 1.5rem;
  font-weight: 600;
}

.modal-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.game-modal-fullscreen,
.game-modal-close {
  color: #fff;
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  padding: 8px 15px;
  border-radius: 8px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
}

.game-modal-fullscreen {
  font-size: 1.2rem;
  padding: 8px;
}

.game-modal-close {
  font-size: 2rem;
  background: rgba(255, 0, 0, 0.2);
  border-color: rgba(255, 0, 0, 0.5);
}

.game-modal-fullscreen:hover {
  background: rgba(255, 138, 0, 0.3);
  border-color: var(--neon-primary);
  color: var(--neon-primary);
  transform: scale(1.1);
}

.game-modal-close:hover {
  background: rgba(255, 0, 0, 0.4);
  border-color: #ff0000;
  color: #ff0000;
  transform: scale(1.1);
  box-shadow: 0 0 15px rgba(255, 0, 0, 0.5);
}

.game-modal-fullscreen:active,
.game-modal-close:active {
  transform: scale(0.95);
}

/* Fullscreen icon */
.game-modal-fullscreen svg {
  width: 20px;
  height: 20px;
}

/* Fullscreen state */
.game-modal.fullscreen .game-modal-content {
  width: 100% !important;
  max-width: 100% !important;
  height: 100vh !important;
  border-radius: 0 !important;
  margin: 0 !important;
}

.game-modal.fullscreen .game-modal-iframe {
  border-radius: 0 !important;
}

.game-modal-iframe {
  width: 100%;
  height: calc(100% - 70px);
  border: none;
  border-radius: 0;
  display: block;
}

@media (min-width: 1024px) {
  .game-modal-iframe {
    border-radius: 0;
  }
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  /* Games layout optimization for mobile */
  .games-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 0 1rem;
  }

  .sidebar-content {
    position: static !important;
    margin-top: 0;
    padding: 1.5rem;
  }

  .sidebar-title {
    font-size: 1.1rem;
  }

  .sidebar-text {
    font-size: 0.85rem;
  }

  .ad-container {
    margin: 1rem 0;
  }

  .ad-placeholder {
    width: 100%;
    max-width: 336px;
    height: 280px;
  }

  .category-cards {
    gap: 0.8rem;
  }

  .category-card {
    padding: 0.8rem;
  }

  .category-title {
    font-size: 0.8rem;
  }

  .category-text {
    font-size: 0.75rem;
  }

  .faq-question {
    font-size: 0.8rem;
  }

  .faq-answer {
    font-size: 0.7rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .game-modal-content {
    width: 100%;
    height: 100vh;
    border-radius: 0;
  }

  .game-modal-header {
    padding: 1rem;
  }

  .game-modal-title {
    font-size: 1.2rem;
  }
}

.keywords-section {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 2rem 0;
}

.keyword-tag {
  padding: 0.5rem 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--neon-primary);
  border-radius: 25px;
  color: white;
  text-decoration: none;
  transition: all 0.3s ease;
}

.keyword-tag:hover {
  background: var(--gradient);
  transform: translateY(-3px);
  box-shadow: 0 0 15px rgba(0, 243, 255, 0.3);
}

.footer {
  background: var(--gradient);
  padding: 40px 5%;
  margin-top: 50px;
  color: white;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: white;
  text-decoration: none;
  padding: 8px 20px;
  border-radius: 25px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
}

.footer-links a:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
  transform: translateY(-3px);
}

/* ==================== RESPONSIVE DESIGN ==================== */

/* Tablet - 768px and below */
@media (max-width: 768px) {
  /* Navbar */
  .navbar {
    padding: 0.75rem 3%;
  }

  .logo {
    font-size: 1.5rem;
  }

  /* Hero Section */
  .hero {
    padding-top: 70px;
    min-height: auto;
  }

  .hero-content {
    padding: 1.5rem;
  }

  .hero-title {
    font-size: 2.5rem;
    letter-spacing: 1px;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  /* Video Container */
  .video-container {
    margin: 1.5rem 0;
  }

  .video-wrapper {
    width: 100%;
    max-width: 100%;
  }

  .features {
    padding: 1.5rem;
  }

  .features h2 {
    font-size: 1.3rem;
  }

  .features strong {
    min-width: 140px;
    font-size: 0.9rem;
  }

  /* Games Section */
  .games-section {
    padding: 3rem 3%;
  }

  .section-title {
    font-size: 2rem;
  }

  .games-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
  }

  .game-image {
    height: 220px;
  }

  .game-title {
    font-size: 1.1rem;
  }

  .game-desc {
    font-size: 0.85rem;
  }

  .play-btn {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
  }

  /* Game Modal - Tablet */
  .game-modal-content {
    width: 100%;
    height: 100vh;
    border-radius: 0;
    margin: 0;
  }

  .game-modal-header {
    padding: 1rem;
  }

  .game-modal-title {
    font-size: 1.2rem;
  }

  .game-modal-iframe {
    height: calc(100vh - 70px);
  }

  .modal-actions {
    gap: 8px;
  }

  .game-modal-fullscreen,
  .game-modal-close {
    min-width: 38px;
    min-height: 38px;
    padding: 6px 12px;
  }

  .game-modal-close {
    font-size: 1.8rem;
  }

  .game-modal-fullscreen svg {
    width: 18px;
    height: 18px;
  }

  /* Intro Section */
  .intro-section {
    padding: 1.5rem;
  }

  .intro-title {
    font-size: 1.3rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }

  /* Breadcrumb */
  .breadcrumb-nav {
    padding: 70px 3% 15px;
  }

  .breadcrumb-container ol {
    font-size: 0.85rem;
  }

  /* Footer */
  .footer {
    padding: 30px 3%;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
    flex-wrap: wrap;
  }
}

/* Mobile - 480px and below */
@media (max-width: 480px) {
  /* Navbar */
  .navbar {
    padding: 0.5rem 2%;
  }

  .logo {
    font-size: 1.2rem;
  }

  /* Hero Section */
  .hero {
    padding-top: 60px;
    padding-bottom: 2rem;
  }

  .hero-content {
    padding: 1rem;
  }

  .hero-title {
    font-size: 1.8rem;
    letter-spacing: 0.5px;
  }

  .hero-subtitle {
    font-size: 0.9rem;
    line-height: 1.5;
  }

  .features {
    padding: 1rem;
    margin: 1.5rem 0;
  }

  .features h2 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
  }

  .features ul {
    padding-left: 0;
  }

  .features li {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
    margin-bottom: 0.8rem;
  }

  .features strong {
    min-width: 100%;
    font-size: 0.85rem;
    margin-bottom: 0.2rem;
  }

  /* CTA Section */
  .cta-section {
    margin-top: 1.5rem;
  }

  .cta-section p {
    font-size: 0.85rem;
    line-height: 1.6;
  }

  .keywords-section {
    gap: 0.5rem;
    margin: 1.5rem 0;
  }

  .keyword-tag {
    padding: 0.4rem 1rem;
    font-size: 0.75rem;
  }

  /* Games Section */
  .games-section {
    padding: 2rem 2%;
  }

  .section-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
  }

  .games-grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }

  .game-image {
    height: 200px;
  }

  .game-info {
    padding: 1.2rem;
  }

  .game-title {
    font-size: 1rem;
  }

  .game-desc {
    font-size: 0.8rem;
  }

  .play-btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.85rem;
    width: 100%;
    text-align: center;
  }

  /* Game Modal - Mobile */
  .game-modal-content {
    margin: 0;
  }

  .game-modal-header {
    padding: 0.8rem;
  }

  .game-modal-title {
    font-size: 1rem;
  }

  .game-modal-close {
    font-size: 1.5rem;
    padding: 0 10px;
  }

  .game-modal-iframe {
    height: calc(100vh - 65px);
  }

  .modal-actions {
    gap: 6px;
  }

  .game-modal-fullscreen,
  .game-modal-close {
    min-width: 36px;
    min-height: 36px;
    padding: 5px 10px;
  }

  .game-modal-close {
    font-size: 1.6rem;
  }

  .game-modal-fullscreen svg {
    width: 16px;
    height: 16px;
  }

  /* Intro Section */
  .intro-section {
    padding: 1rem;
    margin-bottom: 2rem;
  }

  .intro-text,
  .intro-description {
    font-size: 0.85rem;
    line-height: 1.6;
  }

  .intro-title {
    font-size: 1.1rem;
  }

  .features-grid {
    margin-top: 1.5rem;
    gap: 1rem;
  }

  .feature-item h4 {
    font-size: 0.95rem;
  }

  .feature-item p {
    font-size: 0.8rem;
  }

  /* FAQ Section - Mobile Responsive */
  .intro-section h4 {
    font-size: 1rem;
    margin: 1.5rem 0 0.8rem;
  }

  .intro-section h5 {
    font-size: 0.9rem;
  }

  .intro-section > div[style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    gap: 1rem !important;
  }

  .intro-section > div[style*="grid-template-columns"] > div {
    padding: 1rem !important;
  }

  /* Breadcrumb */
  .breadcrumb-nav {
    padding: 60px 2% 10px;
  }

  .breadcrumb-container ol {
    font-size: 0.75rem;
  }

  /* Footer */
  .footer {
    padding: 25px 2%;
  }

  .footer-links {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }

  .footer-links a {
    padding: 6px 15px;
    font-size: 0.85rem;
    width: 100%;
    text-align: center;
  }
}

/* Small Desktop - 1024px and below */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }

  /* Two column layout becomes single column on tablet */
  .games-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .sidebar-content {
    position: static;
    margin-top: 2rem;
  }

  .games-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.8rem;
  }

  .game-image {
    height: 250px;
  }
}

/* Large Desktop - 1400px and above */
@media (min-width: 1400px) {
  .hero-content {
    max-width: 1000px;
  }

  .games-grid {
    max-width: 1400px;
  }
}

/* Landscape Mobile Optimization */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    min-height: 70vh;
    padding-top: 60px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

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

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
  .play-btn {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .game-modal-close {
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}