body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #222;
  color: #eee;
  height: 100vh; /* pour que le flex fonctionne correctement */
}

#app {
  display: flex;
  flex-direction: column;
  padding: 20px;
  height: 100%;
  box-sizing: border-box;
}

h1 {
  text-align: center;
  margin-bottom: 15px;
}

.editor-container {
  display: flex;
  flex: 1;
  gap: 20px;
  height: calc(100% - 60px); /* laisse de la place pour le titre et les boutons */
}

.menu-column {
  width: 220px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.menu-title {
  font-weight: bold;
  margin-bottom: 5px;
}

.menu-line {
  display: flex;
  flex-direction: column;
  margin-bottom: 10px;
}

.menu-options {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.menu-option {
  cursor: pointer;
  padding: 5px 8px;
  border-radius: 4px;
  background: #333;
  color: #eee;
  transition: 0.2s;
}

.menu-option:hover {
  background: #555;
}

.menu-option.selected {
  background: #00c853;
  font-weight: bold;
}

.preview-column {
  flex: 1;
  background: #111;
  border: 2px solid #555;
  border-radius: 6px;
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%; /* correction : la colonne prend toute la hauteur de l'éditeur */
}

canvas {
  flex: 1; /* correction : le canvas prend tout l'espace disponible */
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 4px;
}

.bottom-buttons {
  margin-top: 10px;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

button {
  padding: 10px 15px;
  font-size: 16px;
  cursor: pointer;
  border: none;
  border-radius: 6px;
}

#save {
  background: linear-gradient(135deg, #0f9b0f, #00c853);
  color: #fff;
}

#back {
  background: linear-gradient(135deg, #555, #999);
  color: #fff;
}

select {
  padding: 5px;
  border-radius: 4px;
  font-size: 14px;
}