* {
  box-sizing: border-box;
  border-color: hsl(var(--border));
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  background-color: #121212;
  color: #e0e0e0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

main {
  max-width: 960px;
  margin: 40px auto;
  padding: 0 20px;
}

h1 {
  text-align: center;
  font-weight: 700;
  font-size: 2.5rem;
  margin-bottom: 40px;
  color: #90caf9;
}

section {
  margin-bottom: 40px;
}

section h2 {
  font-weight: 600;
  font-size: 1.5rem;
  margin-bottom: 24px;
  border-left: 4px solid #64b5f6;
  padding-left: 12px;
  color: #64b5f6;
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill,minmax(280px,1fr));
  gap: 16px;
}

li {
  background: #1e1e1e;
  border-radius: 12px;
  box-shadow: 0 1px 6px rgb(0 0 0 / 0.9);
  transition: box-shadow 0.3s ease;
}

li:hover {
  box-shadow: 0 6px 20px rgba(100, 181, 246, 0.7);
}

a {
  display: block;
  text-decoration: none;
  padding: 20px;
  color: #90caf9;
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.3;
  border-radius: 12px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

a:hover {
  background-color: #1565c0;
  color: #e3f2fd;
}

.menu-btn-left {
  position: fixed;
  top: 20px;
  padding: 10px 16px;
  background: #222;
  color: #fff;
  border: none;
  z-index: 1002;
  cursor: pointer;
  border-radius: 4px;
  font-size: 18px;
  opacity: 0.9;
  left: 20px;
}

.menu-btn-right{
  position: fixed;
  bottom: 10px;
  right: 10px;
  width: 80px;
  padding: 5px 13px;
  background-color: #000;
  color: #fff;
  font-size: 12px;
  border-radius: 5px;
  font-family: sans-serif;
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: center;
  z-index: 1003;
  text-transform: none !important;
  font-feature-settings: normal !important;
  font-weight: 400 !important;
}

.globe {
  cursor: pointer;
  perspective: 1000px;
}

.spinY {
  animation: spinY 0.8s ease-in-out;
}

@keyframes spinY {
  from {
    transform: rotateY(0deg);
  }
  to {
    transform: rotateY(1080deg); /* Три полных оборота */
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
    margin-bottom: 32px;
  }

  section h2 {
    font-size: 1.25rem;
    margin-bottom: 16px;
  }
}
section {
  opacity: 0;
  transform: translateX(0);
  transition: none;
}

section.animate {
  animation-duration: 1.5s;
  animation-fill-mode: forwards;
  animation-timing-function: cubic-bezier(0.45, 0, 0.35, 1);
}

section.slide-in-right.animate {
  animation-name: slideInRight;
}

section.slide-in-left.animate {
  animation-name: slideInLeft;
}

@keyframes slideInRight {
  0% {
    opacity: 0;
    transform: translateX(100%);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInLeft {
  0% {
    opacity: 0;
    transform: translateX(-100%);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}