:root {
  --pink: #f7dce9;
  --light-pink: #fdf3fa;
  --rose: #e7b8cc;
  --text: #4a3f42;
  --white: #ffffff;
}

body {
  font-family: "Lora", serif;
  background: var(--light-pink);
  color: var(--text);
  max-width: 1100px;
  margin: auto;
  padding: 1.5rem;
  line-height: 1.6;
}


.layout {
  display: flex;
  gap: 2rem;
}


.sidebar {
  width: 220px;
  background: var(--white);
  padding: 1rem;
  border: 2px solid var(--pink);
  border-radius: 12px;
  position: sticky;
  top: 0;
  height: fit-content;
}

.sidebar h2 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sidebar a {
  text-decoration: none;
  color: var(--text);
  padding: 0.5rem;
  display: block;
  border-radius: 8px;
  transition: background 0.2s;
}

.sidebar a:hover {
  background: var(--pink);
}

header {
  background: linear-gradient(#fde8f4, #f7dce9);
  padding: 2rem 1rem;
  border-radius: 14px;
  border: 2px solid var(--pink);
  text-align: center;
}

header h1 {
  color: var(--rose);
  margin-bottom: 0.3rem;
}

section {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 12px;
  border: 2px solid var(--pink);
  margin-bottom: 2rem;
}

h2 {
  color: var(--rose);
  margin-bottom: 0.8rem;
}

h3 {
  margin-top: 1rem;
  color: var(--rose);
}

ul li {
  margin-bottom: 0.5rem;
  padding-left: 1rem;
  position: relative;
  list-style: none;
}

ul li::before {
  content: "•";
  color: var(--rose);
  position: absolute;
  left: 0;
}

/* Code blocks */
pre {
  background: var(--pink);
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
}


.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;

  background: var(--pink);
  padding: 0.7rem 1rem;
  border-radius: 20px;
  text-decoration: none;
  color: var(--text);
  border: 2px solid var(--rose);

  font-family: "Raleway", sans-serif;
  font-weight: 500;
  font-size: 0.9rem;
}

.back-to-top:hover {
  background: var(--light-pink);
}

@media (max-width: 750px) {
  .layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .nav-links {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .sidebar a {
    padding: 0.5rem 1rem;
    white-space: nowrap;
  }
}

footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  color: var(--text);
  border-top: 2px solid var(--pink);
  margin-top: 2rem;
}