.dropzone {
  border: 2px dashed #2563eb;
  border-radius: 8px;
  background: #fff;
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: background 0.3s;
  width: 70%;
  margin: 0 auto;
}

.dropzone:hover {
  background: #f0f7ff;
}

.dropzone .icon {
  font-size: 40px;
  color: #2563eb;
  margin-bottom: 10px;
}

.dropzone .bold {
  font-weight: bold;
}

.dropzone .small {
  font-size: 12px;
  color: #777;
}

/* Mobile Optimization */
@media (max-width: 768px) {
  .dropzone {
    width: 95%;
    padding: 30px 15px;
  }
  
  .dropzone .icon {
    font-size: 32px;
  }
  
  .dropzone .bold {
    font-size: 14px;
  }
  
  .dropzone .small {
    font-size: 11px;
  }
}

@media (max-width: 480px) {
  .dropzone {
    width: 100%;
    padding: 25px 10px;
  }
  
  .dropzone .icon {
    font-size: 28px;
  }
  
  .dropzone .bold {
    font-size: 13px;
  }
  
  .dropzone .small {
    font-size: 10px;
  }
}