/* Main Styles - Tricky Prank: Annoying Quest */
/* Fun, playful, and mischievous design */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700;800&display=swap');

/* Base Styles */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  background-color: var(--color-gray-50);
  line-height: var(--line-height-normal);
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ==================== HEADER ==================== */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  padding: var(--spacing-md) 0;
  transition: var(--transition-base);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: var(--transition-fast);
}

.header__logo:hover {
  transform: scale(1.02);
}

.header__logo img {
  height: 44px;
  width: 44px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.header__logo-text {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-rainbow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.nav__link {
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-600);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
  position: relative;
}

.nav__link:hover {
  color: var(--color-primary);
  background: var(--color-gray-100);
}

.nav__link--active {
  color: var(--color-primary-dark);
  background: linear-gradient(135deg, rgba(244, 114, 182, 0.1), rgba(167, 139, 250, 0.1));
}

/* Mobile menu button */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.menu-toggle:hover {
  background: var(--color-gray-100);
}

.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-gray-700);
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Language Switcher - Dropdown Style */
.lang-switcher {
  position: relative;
  margin-left: var(--spacing-md);
}

.lang-switcher__current {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid transparent;
}

.lang-switcher__current:hover {
  background: var(--color-gray-200);
}

.lang-switcher__current .flag {
  font-size: 1.1rem;
}

.lang-switcher__current .arrow {
  font-size: 0.7rem;
  transition: var(--transition-fast);
}

.lang-switcher.open .lang-switcher__current .arrow {
  transform: rotate(180deg);
}

.lang-switcher__dropdown {
  position: absolute;
  top: calc(100% + var(--spacing-xs));
  right: 0;
  min-width: 160px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-gray-100);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition-fast);
  z-index: var(--z-dropdown);
  overflow: hidden;
}

.lang-switcher.open .lang-switcher__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-switcher__link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-600);
  text-decoration: none;
  transition: var(--transition-fast);
}

.lang-switcher__link:hover {
  background: var(--color-gray-50);
  color: var(--color-gray-900);
}

.lang-switcher__link--active {
  background: linear-gradient(135deg, rgba(244, 114, 182, 0.1), rgba(167, 139, 250, 0.1));
  color: var(--color-primary);
  font-weight: 600;
}

.lang-switcher__link .flag {
  font-size: 1.2rem;
}

.lang-switcher__link:hover {
  color: var(--color-gray-700);
  background: var(--color-gray-100);
}

/* ==================== HERO SECTION ==================== */
.hero {
  background: var(--gradient-hero);
  padding: var(--spacing-4xl) 0;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

/* Decorative background elements */
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '🎭';
  position: absolute;
  bottom: 10%;
  left: 5%;
  font-size: 4rem;
  opacity: 0.15;
  animation: float 6s ease-in-out infinite;
}

/* Hero decoration yarn balls */
.hero__decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.yarn-ball {
  position: absolute;
  font-size: 2.5rem;
  opacity: 0.12;
  animation: floatYarn 8s ease-in-out infinite;
}

.yarn-ball--1 {
  top: 20%;
  right: 15%;
  animation-delay: -2s;
}

.yarn-ball--2 {
  bottom: 25%;
  right: 25%;
  animation-delay: -4s;
  font-size: 2rem;
}

@keyframes floatYarn {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-15px) rotate(5deg); }
  50% { transform: translateY(-5px) rotate(-3deg); }
  75% { transform: translateY(-20px) rotate(8deg); }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(10deg); }
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  animation: fadeInUp 0.6s ease-out;
}

.hero__title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero__title span {
  color: var(--color-yellow);
  text-shadow: 0 2px 10px rgba(251, 191, 36, 0.3);
}

.hero__description {
  font-size: var(--font-size-lg);
  opacity: 0.95;
  margin-bottom: var(--spacing-xl);
  max-width: 500px;
  line-height: var(--line-height-relaxed);
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Search Box */
.search-box {
  display: flex;
  gap: var(--spacing-sm);
  max-width: 400px;
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.search-box__input {
  flex: 1;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 2px solid transparent;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-base);
  background: var(--color-white);
  color: var(--color-gray-800);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-fast);
}

.search-box__input:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg), 0 0 0 4px rgba(244, 114, 182, 0.1);
}

.search-box__input::placeholder {
  color: var(--color-gray-400);
}

.search-box__btn {
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--color-gray-900);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
  transition: var(--transition-fast);
  box-shadow: var(--shadow-lg);
}

.search-box__btn:hover {
  background: var(--color-gray-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* Hero Preview - Card Stack */
.hero__preview {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  min-height: 480px;
  perspective: 1200px;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.card-stack {
  position: relative;
  width: 280px;
  height: 420px;
}

.card-stack__item {
  position: absolute;
  width: 200px;
  height: 360px;
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform-origin: bottom center;
}

.card-stack__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Card positions - fan out effect */
.card-stack__item:nth-child(1) {
  transform: rotate(-12deg) translateX(-90px);
  z-index: 1;
}

.card-stack__item:nth-child(2) {
  transform: rotate(-6deg) translateX(-45px);
  z-index: 2;
}

.card-stack__item:nth-child(3) {
  transform: rotate(0deg) translateX(0);
  z-index: 3;
}

.card-stack__item:nth-child(4) {
  transform: rotate(6deg) translateX(45px);
  z-index: 2;
}

.card-stack__item:nth-child(5) {
  transform: rotate(12deg) translateX(90px);
  z-index: 1;
}

/* Remove hover effects to prevent flickering */

/* Card inner styling */
.card-stack__inner {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #fff7ed 0%, #ffedd5 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-sm);
}

.card-stack__screen {
  width: 95%;
  height: 85%;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-inner);
}

.card-stack__screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-stack__label {
  margin-top: var(--spacing-sm);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  background: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
}

/* ==================== GAME FRAME ==================== */
.game-frame {
  background: var(--gradient-card);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.game-frame iframe {
  border-radius: var(--radius-xl);
  width: 100%;
  height: 500px;
  display: block;
  box-shadow: var(--shadow-inner);
}

/* ==================== SECTIONS ==================== */
.section {
  padding: var(--spacing-4xl) 0;
}

.section--alt {
  background: var(--color-white);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section__title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-sm);
}

.section__subtitle {
  color: var(--color-gray-500);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

/* ==================== FEATURE CARDS ==================== */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
  border: 1px solid var(--color-gray-100);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-rainbow);
  opacity: 0;
  transition: var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

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

.feature-card--red::before { background: var(--color-red); opacity: 1; }
.feature-card--green::before { background: var(--color-green); opacity: 1; }
.feature-card--blue::before { background: var(--color-blue); opacity: 1; }
.feature-card--purple::before { background: var(--color-purple); opacity: 1; }

.feature-card__icon {
  width: 70px;
  height: 70px;
  margin: 0 auto var(--spacing-lg);
  background: var(--gradient-hero-alt);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  transition: var(--transition-bounce);
}

.feature-card:hover .feature-card__icon {
  transform: scale(1.1) rotate(-5deg);
}

.feature-card__title {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--color-gray-800);
}

.feature-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  line-height: var(--line-height-relaxed);
}

/* ==================== LEVEL CARDS ==================== */
.levels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--spacing-md);
}

.level-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.level-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  opacity: 0;
  transition: var(--transition-fast);
  z-index: 0;
}

.level-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: translateY(-4px) scale(1.02);
}

.level-card:hover::before {
  opacity: 0.03;
}

.level-card__number {
  position: relative;
  z-index: 1;
  font-family: var(--font-family-display);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-button);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.level-card__label {
  position: relative;
  z-index: 1;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  font-weight: var(--font-weight-medium);
}

.level-card__difficulty {
  position: relative;
  z-index: 1;
  display: inline-block;
  margin-top: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.level-card__difficulty--easy {
  background: linear-gradient(135deg, #dcfce7, #bbf7d0);
  color: #166534;
}

.level-card__difficulty--medium {
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  color: #92400e;
}

.level-card__difficulty--hard {
  background: linear-gradient(135deg, #fee2e2, #fecaca);
  color: #991b1b;
}

/* ==================== DOWNLOAD SECTION ==================== */
.download {
  background: var(--gradient-warm);
  padding: var(--spacing-2xl) 0;
  position: relative;
  overflow: hidden;
}

.download::before {
  content: '😈';
  position: absolute;
  right: 10%;
  top: 50%;
  transform: translateY(-50%);
  font-size: 5rem;
  opacity: 0.15;
}

.download__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2xl);
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.download__text {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-800);
}

.download__buttons {
  display: flex;
  gap: var(--spacing-md);
}

.download__btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--color-gray-900);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-fast);
  box-shadow: var(--shadow-lg);
}

.download__btn:hover {
  background: var(--color-gray-800);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

/* ==================== FAQ SECTION ==================== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-100);
  transition: var(--transition-fast);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
}

.faq-item--red { border-left: 4px solid var(--color-red); }
.faq-item--green { border-left: 4px solid var(--color-green); }
.faq-item--blue { border-left: 4px solid var(--color-blue); }
.faq-item--yellow { border-left: 4px solid var(--color-yellow); }

.faq-item__question {
  width: 100%;
  padding: var(--spacing-lg) var(--spacing-xl);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--color-white);
  color: var(--color-gray-800);
  transition: var(--transition-fast);
}

.faq-item__question:hover {
  background: var(--color-gray-50);
}

.faq-item__question::after {
  content: '+';
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  transition: var(--transition-fast);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-100);
  border-radius: var(--radius-full);
}

.faq-item.active .faq-item__question::after {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: var(--color-white);
}

.faq-item__answer {
  padding: 0 var(--spacing-xl) var(--spacing-lg);
  color: var(--color-gray-600);
  line-height: var(--line-height-relaxed);
  display: none;
}

.faq-item.active .faq-item__answer {
  display: block;
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==================== FOOTER ==================== */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.footer__brand img {
  height: 40px;
  width: 40px;
  border-radius: var(--radius-lg);
}

.footer__brand-text {
  font-family: var(--font-family-display);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  color: var(--color-white);
}

.footer__desc {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  max-width: 300px;
}

.footer__title {
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-base);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  font-size: var(--font-size-sm);
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.footer__link:hover {
  color: var(--color-primary-light);
  transform: translateX(4px);
}

.footer__bottom {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-800);
  text-align: center;
  font-size: var(--font-size-sm);
}

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-xl);
  font-weight: var(--font-weight-semibold);
  transition: var(--transition-fast);
  cursor: pointer;
  border: none;
  font-size: var(--font-size-base);
}

.btn--primary {
  background: var(--gradient-button);
  color: var(--color-white);
  box-shadow: var(--shadow-md), 0 4px 14px rgba(244, 114, 182, 0.3);
}

.btn--primary:hover {
  background: var(--gradient-button-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 6px 20px rgba(244, 114, 182, 0.4);
}

.btn--outline {
  border: 2px solid var(--color-gray-300);
  color: var(--color-gray-700);
  background: transparent;
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(244, 114, 182, 0.05);
}

/* View All Button */
.view-all {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
  .features {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
  }
  
  .hero {
    padding: var(--spacing-3xl) 0;
  }
  
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-2xl);
  }
  
  .hero__description {
    margin: 0 auto var(--spacing-xl);
  }
  
  .search-box {
    margin: 0 auto;
  }
  
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  }
  
  .nav--open {
    display: block;
  }
  
  .nav__list {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .nav__link {
    display: block;
    padding: var(--spacing-md);
    text-align: center;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .lang-switcher {
    margin-left: auto;
    margin-right: var(--spacing-sm);
  }
  
  .features {
    grid-template-columns: 1fr;
  }
  
  .download__inner {
    flex-direction: column;
    text-align: center;
  }
  
  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer__desc {
    max-width: none;
  }
  
  /* Card stack responsive */
  .hero__preview {
    min-height: 350px;
  }
  
  .card-stack {
    transform: scale(0.75);
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--spacing-3xl) 0;
  }
  
  .download__buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .download__btn {
    justify-content: center;
  }
  
  .levels-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}


/* ==================== ADDITIONAL ANIMATIONS ==================== */

/* Stagger animation for grid items */
.levels-grid .level-card {
  animation: fadeInUp 0.4s ease-out both;
}

.levels-grid .level-card:nth-child(1) { animation-delay: 0.05s; }
.levels-grid .level-card:nth-child(2) { animation-delay: 0.1s; }
.levels-grid .level-card:nth-child(3) { animation-delay: 0.15s; }
.levels-grid .level-card:nth-child(4) { animation-delay: 0.2s; }
.levels-grid .level-card:nth-child(5) { animation-delay: 0.25s; }
.levels-grid .level-card:nth-child(6) { animation-delay: 0.3s; }
.levels-grid .level-card:nth-child(7) { animation-delay: 0.35s; }
.levels-grid .level-card:nth-child(8) { animation-delay: 0.4s; }

/* Feature cards stagger */
.features .feature-card {
  animation: fadeInUp 0.5s ease-out both;
}

.features .feature-card:nth-child(1) { animation-delay: 0.1s; }
.features .feature-card:nth-child(2) { animation-delay: 0.2s; }
.features .feature-card:nth-child(3) { animation-delay: 0.3s; }
.features .feature-card:nth-child(4) { animation-delay: 0.4s; }

/* Shimmer effect for buttons */
.btn--primary {
  position: relative;
  overflow: hidden;
}

.btn--primary::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    to right,
    transparent 0%,
    rgba(255, 255, 255, 0.2) 50%,
    transparent 100%
  );
  transform: rotate(30deg) translateX(-100%);
  transition: transform 0.6s ease;
}

.btn--primary:hover::after {
  transform: rotate(30deg) translateX(100%);
}

/* Glow effect on hover for cards */
.feature-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-2xl);
  opacity: 0;
  transition: var(--transition-fast);
  background: var(--gradient-hero);
  z-index: -1;
  filter: blur(20px);
}

.feature-card:hover::after {
  opacity: 0.15;
}

/* Smooth image loading */
img {
  opacity: 1;
  transition: opacity 0.3s ease;
}

img[loading="lazy"] {
  opacity: 0;
}

img[loading="lazy"].loaded,
img:not([loading="lazy"]) {
  opacity: 1;
}

/* Interactive hover states */
.footer__link::before {
  content: '→';
  opacity: 0;
  margin-right: -12px;
  transition: var(--transition-fast);
}

.footer__link:hover::before {
  opacity: 1;
  margin-right: 4px;
}

/* Badge pulse animation */
.hero__badge {
  animation: fadeInUp 0.6s ease-out, badgePulse 3s ease-in-out infinite 1s;
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.2); }
  50% { box-shadow: 0 0 0 8px rgba(255, 255, 255, 0); }
}

/* Loading skeleton */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-gray-200) 25%,
    var(--color-gray-100) 50%,
    var(--color-gray-200) 75%
  );
  background-size: 200% 100%;
  animation: skeleton 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Tooltip styles */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-gray-900);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-4px);
}

/* Smooth scroll indicator */
.scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-button);
  z-index: var(--z-fixed);
  transition: width 0.1s ease;
}

/* Back to top button */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 48px;
  height: 48px;
  background: var(--gradient-button);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-fast);
  z-index: var(--z-fixed);
  font-size: var(--font-size-lg);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}


/* ==================== VERSION TIMELINE - Premium Design ==================== */
.version-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
}

/* Vertical line */
.version-timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-primary-light) 100%);
  border-radius: var(--radius-full);
}

.version-item {
  position: relative;
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-100);
  transition: var(--transition-base);
}

.version-item:last-child {
  margin-bottom: 0;
}

/* Timeline dot */
.version-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: var(--spacing-xl);
  width: 18px;
  height: 18px;
  background: var(--gradient-button);
  border-radius: var(--radius-full);
  border: 4px solid var(--color-white);
  box-shadow: var(--shadow-md), 0 0 0 4px rgba(255, 107, 53, 0.2);
  z-index: 1;
}

/* Connector line */
.version-item::after {
  content: '';
  position: absolute;
  left: -16px;
  top: calc(var(--spacing-xl) + 6px);
  width: 16px;
  height: 3px;
  background: var(--color-primary-light);
}

.version-item:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-xl), 0 8px 30px rgba(255, 107, 53, 0.15);
  border-color: var(--color-primary-light);
}

.version-item:hover::before {
  transform: scale(1.2);
  box-shadow: var(--shadow-lg), 0 0 0 6px rgba(255, 107, 53, 0.3);
}

.version-item__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.version-item__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--gradient-button);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-md), 0 4px 15px rgba(255, 107, 53, 0.3);
  letter-spacing: 0.5px;
}

.version-item__badge::before {
  content: '🚀';
  font-size: var(--font-size-sm);
}

.version-item:first-child .version-item__badge {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  box-shadow: var(--shadow-md), 0 4px 15px rgba(34, 197, 94, 0.3);
}

.version-item:first-child .version-item__badge::before {
  content: '✨';
}

.version-item__date {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  font-weight: var(--font-weight-medium);
  background: var(--color-gray-100);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
}

.version-item__date::before {
  content: '📅';
  font-size: var(--font-size-xs);
}

.version-item__changes {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.version-item__changes li {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  color: #166534;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  border: 1px solid #bbf7d0;
  transition: var(--transition-fast);
}

.version-item__changes li:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.version-item__changes li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: #22c55e;
  color: white;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: var(--font-weight-bold);
}

/* Different colors for different change types */
.version-item__changes li[data-type="feature"] {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  color: #1e40af;
  border-color: #bfdbfe;
}

.version-item__changes li[data-type="feature"]::before {
  background: #3b82f6;
  content: '+';
}

.version-item__changes li[data-type="fix"] {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  color: #92400e;
  border-color: #fcd34d;
}

.version-item__changes li[data-type="fix"]::before {
  background: #f59e0b;
  content: '🔧';
  font-size: 10px;
}

@media (max-width: 768px) {
  .version-timeline {
    padding-left: 30px;
  }
  
  .version-timeline::before {
    left: 10px;
  }
  
  .version-item::before {
    left: -26px;
    width: 14px;
    height: 14px;
  }
  
  .version-item::after {
    left: -13px;
    width: 13px;
  }
  
  .version-item__header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .version-timeline {
    padding-left: 25px;
  }
  
  .version-item {
    padding: var(--spacing-lg);
  }
  
  .version-item__changes {
    flex-direction: column;
  }
  
  .version-item__changes li {
    width: 100%;
  }
}