body {
  margin: 0;
  font-family: Arial;
  background: #777;
  overflow: hidden;
}

/* ---------------- TOOLBAR ---------------- */
#toolbar {
  background: #214e92;
  color: #fff;
  padding: 8px;
  display: flex;
  gap: 8px;
  align-items: center;
  height: 50px;
  box-sizing: border-box;
}

button {
  padding: 6px 10px;
  color: #214e92;
}

#info {
  flex: 1;
  text-align: center;
}

/* ---------------- VIEWER ---------------- */
#viewer {
  height: calc(100vh - 50px);
  width: 100%;

  display: flex;
  justify-content: center;
  align-items: center;

  gap: 2px; /* 🔥 pages rapprochées (tu peux mettre 0px si tu veux collé) */

  padding: 10px;
  box-sizing: border-box;

  overflow: hidden;
}

/* ---------------- CANVAS ---------------- */
canvas {
  background: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,.25);

  max-width: 100%;
  max-height: 100%;
}

/* ---------------- MOBILE ---------------- */
@media (max-width: 768px) {
  #viewer {
    gap: 0px; /* encore plus propre sur mobile */
    padding: 5px;
  }

  canvas {
    width: 100%;
    height: auto;
  }
}