/* =============================================
   style.css - Styles communs à tous les exercices
   ============================================= */

* { box-sizing: border-box; }

body {
  font-family: Arial, sans-serif;
  background: #f9f9f9;
  margin: 0;
}

a.back {
  display: inline-block;
  margin: 20px 0;
  color: #3498db;
  text-decoration: none;
}

h1 { color: #2c3e50; }

h2 {
  color: #3498db;
  border-bottom: 2px solid #3498db;
  padding-bottom: 5px;
}

pre {
  background: #2c3e50;
  color: #ecf0f1;
  padding: 15px;
  border-radius: 6px;
  overflow-x: auto;
}

code {
  background: #eee;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.9rem;
}

.note {
  background: #eaf4fb;
  border-left: 4px solid #3498db;
  padding: 10px 15px;
  margin: 10px 0;
  border-radius: 4px;
}