.clipboard-upload-box {
  position: relative;
  clear: both;
  border: 2px dashed #adb5bd;
  border-radius: 0.75rem;
  min-height: 180px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 1rem;
  margin-bottom: 1rem;
  background: #f8f9fa;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: text;
  outline: none;
  transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.clipboard-upload-box:hover,
.clipboard-upload-box:focus {
  border-color: #0d6efd;
  background: #eef5ff;
  box-shadow: 0 0 0 0.18rem rgba(13, 110, 253, 0.18);
}

.clipboard-upload-box .upload-btn {
  width: min(100%, 220px);
  min-width: 0;
}

.clipboard-upload-box .upload-hint {
  color: #6c757d;
  font-size: 0.9rem;
  margin-top: 0.75rem;
  margin-bottom: 0;
}

.clipboard-upload-box .upload-selected-file {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #0a58ca;
  word-break: break-word;
}

.clipboard-upload-input-hidden {
  display: none !important;
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  border: 0 !important;
}

@media (max-width: 576px) {
  .clipboard-upload-box {
    min-height: 150px;
    padding: 0.75rem;
  }

  .clipboard-upload-box .upload-hint,
  .clipboard-upload-box .upload-selected-file {
    font-size: 0.85rem;
  }
}