body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  margin: 0;
  color: #111;
}

main {
  max-width: 700px;
  margin: 120px auto;
  padding: 20px;
}

h1 {
  font-size: 56px;
  margin-bottom: 20px;
}

button {
  background: black;
  color: white;
  border: none;
  padding: 18px 28px;
  font-size: 18px;
  border-radius: 12px;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

button:focus {
  outline: 3px solid #4da3ff;
}

#result {
  margin-top: 30px;
  font-size: 22px;
}
nav {
  background: black;
  padding: 24px 40px;
  display: flex;
  gap: 32px;
  align-items: center;
}

nav a {
  color: white;
  text-decoration: none;
  font-size: 20px;
  font-weight: 600;
}

nav a:hover {
  opacity: 0.8;
}

nav a:focus {
  outline: 3px solid #4da3ff;
  outline-offset: 6px;
  border-radius: 4px;
}
.shop-card {
  margin-top: 48px;
  padding: 28px;
  border: 2px solid #111;
  border-radius: 16px;
  background: white;
}
.shop-card h2 {
  margin-top: 0;
  font-size: 28px;
}
.price {
  font-size: 26px;
  font-weight: 700;
}
.shop-button {
  display: inline-block;
  background: black;
  color: white;
  padding: 16px 24px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
}
.shop-button:focus {
  outline: 3px solid #4da3ff;
  outline-offset: 6px;
}
.logo {
  width: 120px;
  height: auto;
  display: block;
}
.logo {
  width: 80px;
  height: auto;
}
.logo {
  max-width: 120px;
}

main {
  max-width: 900px;
  margin: 80px auto;
  padding: 0 32px;
}
main {
  max-width: 950px;
  margin: 80px auto;
  padding: 0 32px;
}

p, li {
  line-height: 1.6;
  font-size: 18px;
}

h2 {
  margin-top: 56px;
}

h3 {
  margin-top: 40px;
}
.hidden {
  display: none;
}
.loader {
  width: 42px;
  height: 42px;
  margin-top: 28px;
  border: 5px solid #ddd;
  border-top: 5px solid #111;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
form {
  display: grid;
  gap: 14px;
  max-width: 420px;
}

input, select {
  padding: 14px;
  font-size: 18px;
  border: 2px solid #111;
  border-radius: 10px;
}

label {
  font-weight: 700;
}