body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  margin: 0;
  padding: 0;
  background: #bef2f7;
  color: #333;
  line-height: 1.6;
}


section {
  /* max-width: 800px; */
  margin: 40px auto;
  padding: 20px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}


header {
  margin-bottom: 20px;
  font-size: 1.8rem;
  font-weight: bold;
  padding: 8px 15px;
  background: linear-gradient(90deg, #f74003, #ff8a50);
  color: #fff;
  border-radius: 6px;
  box-shadow: 0 3px 8px rgba(0,0,0,0.15);
}
.btn {
  width: auto;
  display: inline-block;
  padding: 10px 25px;
  font-size: 18px;
  font-weight: bold;
  border-radius: 8px;
  border: none;
  cursor: pointer;

  color: #fff;
  background: linear-gradient(135deg, #ff5f1f, #ff8347);
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
  transition: all 0.25s ease-in-out;
}

.btn:hover {
  background: linear-gradient(135deg, #ff8347, #ff5f1f);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0,0,0,0.2);
}

.btn:active {
  transform: translateY(1px);
  box-shadow: 0 3px 6px rgba(0,0,0,0.2);
}

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 10px 15px;
  border-radius: 5px;
  color: white;
  font-size: 0.9em;
  z-index: 1000;
  opacity: 0.9;
}
.toast.error { background-color: #e74c3c; }
.toast.success { background-color: #2ecc71; }