How to Style File Input in CSS

<!-- HTML -->
<div class="file-input-wrapper">
  <input type="file" id="file-upload" class="file-input-hidden" />
  <label for="file-upload" class="file-input-label">
    Choose File
  </label>
</div>

/* CSS */
.file-input-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.file-input-label {
  display: inline-block;
  padding: 12px 24px;
  background: #3b82f6;
  color: white;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.2s;
}

.file-input-label:hover {
  background: #2563eb;
}

.file-input-wrapper:focus-within .file-input-label {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}