/* ===== Reset بسيط ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
}

section {
  scroll-margin-top: 100px;
}



section {
  margin-bottom: 60px;
}

#back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  display: none;
  background-color: #ffffff;
  color: red;
  border: none;
  padding: 12px 16px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.3);
  z-index: 1000;
  transition: background-color 0.3s, transform 0.3s;
}

#back-to-top:hover {
  background-color: red;
  color: #ffffff;
  transform: scale(1.1);
}