:root {
  --baby-pink: #FFC1CC;
  --cream: #FFF5E1;
  --peach-cream: #FFF1E6;
  --peach-pink: #fad0c1;
  --strawberry-red: #FF6B81;
  --bold-strawberry: #ff3856;
  --powder-blue: #a9ceeb;
  --soft-blue: #abd2ef;
  --orange: #ff7b00;
  --soft-orange: #ff9f6b;
  --charcoal-gray: #4A4A4A;
}

body {
  margin: 0;
  font-family: 'Nunito', sans-serif;
  color: var(--charcoal-gray);
}

header {
  background-color: var(--cream);
  text-align: center;
  padding: 2rem 1rem;
}

header h1 {
  font-family: 'Baloo 2', cursive;
  color: var(--strawberry-red);
  font-size: 2.5rem;
  margin: 0.5rem 0;
}

.traits {
  font-family: 'Josefin Sans', sans-serif;
  letter-spacing: 2px;
  color: var(--powder-blue);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

nav a {
  text-decoration: none;
  font-family: 'Comfortaa', sans-serif;
  background-color: var(--baby-pink);
  color: var(--charcoal-gray);
  padding: 0.5rem 1.5rem;
  border-radius: 25px;
  transition: background-color 0.3s;
}

nav a:hover {
  background-color: var(--strawberry-red);
  color: white;
}

section {
  padding: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

h2 {
  font-family: 'Baloo 2', cursive;
  font-size: 2rem;
}

img.responsive {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  margin-top: 1rem;
}

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

.pink {
  background-color: var(--baby-pink);
}

.cream {
  background-color: var(--cream);
}

.blue {
  background-color: var(--powder-blue);
}

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

.card {
  background-color: var(--cream);
  border-radius: 15px;
  padding: 1rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: var(--strawberry-red);
  color: white;
  padding: 0.5rem 0.75rem;
  border-radius: 50%;
  font-size: 1.25rem;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: opacity 0.3s ease-in-out;
  opacity: 0;
  pointer-events: none;
  z-index: 999;
}

.back-to-top.show {
  opacity: 0.8;
  pointer-events: auto;
}

.back-to-top:hover {
  opacity: 1;
  background-color: var(--baby-pink);
  color: var(--charcoal-gray);
}