body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f8f8f8;
}

header {
  background: #2c3e50;
  color: white;
  padding: 1em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav {
  background: #ecf0f1;
  padding: 1em;
  display: flex;
  gap: 1em;
  justify-content: center;
}

main {
  padding: 1em;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1em;
}

.product {
  background: white;
  border: 1px solid #ccc;
  padding: 1em;
  border-radius: 8px;
  text-align: center;
}

aside {
  background: #fff;
  border: 1px solid #ccc;
  padding: 1em;
  position: fixed;
  right: 0;
  top: 80px;
  width: 300px;
  height: calc(100% - 100px);
  overflow-y: auto;
}

.hidden {
  display: none;
}

#auth {
  background: #e3e3e3;
  padding: 1em;
  margin: 1em;
  border-radius: 8px;
  max-width: 300px;
}

#auth input {
  display: block;
  width: 100%;
  margin: 0.5em 0;
  padding: 0.5em;
}

.overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.8);
  display: flex;
  justify-content: center;
  align-items: center;
}

.age-modal {
  background: white;
  padding: 2em;
  border-radius: 8px;
  text-align: center;
}

.lang-switcher button {
  margin-left: 0.5em;
}