/* Reset default styles */
body, h1, h2, h3, p, ul {
  margin: 0;
  padding: 0;
}

/* General Page Layout */
body {
  font-family: "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
  background-color: #f3f4f9;
  color: #333;
}

/* Header */
header {
  background-color: #2f2f7f;
  color: white;
  text-align: center;
  padding: 1.5em 0;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
}

header h1 {
  font-size: 2.2em;
  letter-spacing: 1px;
}

/* Navigation */
nav {
  background-color: #444;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  padding: 0.5em 0;
}

nav li {
  margin: 0 1em;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease, border-bottom 0.3s ease;
}

nav a:hover {
  color: #ffd700;
  border-bottom: 2px solid #ffd700;
}

/* Main Content */
main {
  max-width: 1000px;
  margin: 2em auto;
  padding: 0 1em;
}

main h2 {
  text-align: center;
  color: #2f2f7f;
  margin-bottom: 1em;
  font-size: 1.8em;
}

/* Lesson Sections */
#piano, #guitar, #violin {
  background-color: white;
  margin: 1.5em 0;
  padding: 1.5em;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

#piano:hover, #guitar:hover, #violin:hover {
  transform: scale(1.02);
}

h3 {
  color: #2f2f7f;
  margin-bottom: 0.5em;
}

/* Images */
img {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: 8px;
  margin: 0.5em auto;
}

/* Info Section */
#info {
  background-color: #e8eaf6;
  text-align: center;
  padding: 1em;
  border-radius: 10px;
  margin-top: 2em;
  box-shadow: 0 3px 6px rgba(0,0,0,0.1);
}

#info p {
  color: #2f2f7f;
  font-weight: bold;
}

/* Footer */
footer {
  background-color: #2f2f7f;
  color: white;
  text-align: center;
  padding: 1em 0;
  margin-top: 3em;
}

footer a {
  color: #ffd700;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 700px) {
  nav ul {
    flex-direction: column;
    align-items: center;
  }

  img {
    max-width: 100%;
  }

  main {
    padding: 0 0.5em;
  }
}