/* General page styling */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f5f5;
}

/* Header & navigation */
header {
  background: #2c3e50;
  color: white;
  padding: 15px;
  text-align: center;
}

nav a {
  color: white;
  text-decoration: none;
  margin: 0 15px;
}

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

nav a.active {
  font-weight: bold;
  text-decoration: underline;
  background: #1abc9c;
  padding: 5px 10px;
  border-radius: 5px;
}

/* Main content */
main {
  padding: 20px;
  background: white;
  margin: 20px auto;
  max-width: 800px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

/* Images */
.page-img {
  display: block;
  max-width: 100%;
  margin: 20px auto;
  border-radius: 10px;
}

.exercise-list {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 20px;
}

.exercise {
  text-align: center;
}

.exercise img {
  width: 180px;
  height: 150px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 0 5px rgba(0,0,0,0.2);
}

/* Forms */
form {
  margin-top: 20px;
  text-align: center;
}

form input {
  padding: 8px;
  width: 60%;
  margin-bottom: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

form button {
  padding: 8px 15px;
  border: none;
  background: #27ae60;
  color: white;
  border-radius: 6px;
  cursor: pointer;
}

form button:hover {
  background: #219150;
}

/* Footer */
footer {
  text-align: center;
  padding: 10px;
  background: #2c3e50;
  color: white;
  margin-top: 20px;
}