.heic-converter * { box-sizing: border-box; }
@media (prefers-reduced-motion: reduce) {
  .heic-converter *, .heic-converter *::before, .heic-converter *::after { transition: none !important; }
}
.heic-converter {
  font-family: system-ui, -apple-system, sans-serif;
  color: #222;
  padding: 1rem 0;
}
.heic-converter .container { width: 100%; max-width: 420px; margin: 0 auto; }
.heic-converter .dropzone {
  padding: 2.5rem 2rem;
  border: 2px dashed #ccc;
  border-radius: 12px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.heic-converter .dropzone:hover, .heic-converter .dropzone.dragover {
  border-color: #999;
  background: #eee;
}
.heic-converter .dropzone.processing { border-color: #6a9; }
.heic-converter .dropzone.error { border-color: #c66; }
.heic-converter .dropzone p { margin: 0; font-size: 1rem; color: #666; }
.heic-converter .content { margin-top: 1.25rem; min-height: 2em; }
.heic-converter .status { font-size: 0.9rem; min-height: 1.5em; }
.heic-converter .privacy { margin-top: 1rem; font-size: 0.75rem; color: #555; }
.heic-converter .opts { display: flex; flex-wrap: wrap; gap: 0.75rem 1.25rem; font-size: 0.85rem; color: #666; align-items: center; margin-bottom: 0.75rem; }
.heic-converter .opts label { display: flex; align-items: center; gap: 0.35rem; }
.heic-converter .opts select { padding: 0.25rem 0.5rem; border-radius: 4px; background: #e8e8e8; border: 1px solid #ccc; color: #222; font-size: 0.85rem; cursor: pointer; }
.heic-converter .file-list-wrap { display: none; text-align: left; }
.heic-converter .file-list-wrap.visible { display: block; }
.heic-converter .file-list-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.25rem; font-size: 0.8rem; color: #666; }
.heic-converter .file-list-header button { background: none; border: none; color: #666; cursor: pointer; padding: 0 0.25rem; font-size: 0.8rem; text-decoration: underline; }
.heic-converter .file-list-header button:hover { color: #a44; }
.heic-converter .file-list-header span { display: flex; gap: 0.5rem; }
.heic-converter .file-list { max-height: 220px; overflow-y: auto; font-size: 0.85rem; color: #666; }
.heic-converter .file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.25rem 0;
  border-bottom: 1px solid #ddd;
}
.heic-converter .file-item:last-child { border-bottom: none; }
.heic-converter .file-item span { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.heic-converter .file-item button {
  flex-shrink: 0;
  padding: 0.15rem 0.4rem;
  font-size: 0.75rem;
  cursor: pointer;
  background: #e0e0e0;
  border: 1px solid #ccc;
  border-radius: 4px;
  color: #333;
}
.heic-converter .file-item button:hover { background: #a44; border-color: #a44; color: #fff; }
.heic-converter .file-item button:active { transform: scale(0.95); }
.heic-converter #fileInput { display: none; }
.heic-converter .actions { margin-top: 1rem; display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: center; }
.heic-converter .actions button {
  padding: 0.5rem 1rem;
  cursor: pointer;
  background: #e0e0e0;
  border: 1px solid #ccc;
  border-radius: 6px;
  color: #333;
  font-size: 0.9rem;
}
.heic-converter .actions button:hover { background: #d5d5d5; }
.heic-converter .actions button:active { transform: scale(0.98); }
.heic-converter button:focus-visible, .heic-converter .dropzone:focus-visible { outline: 2px solid #4a8; outline-offset: 2px; }
.heic-converter .file-item button { min-width: 28px; min-height: 28px; }
.heic-converter .dropzone.busy { pointer-events: none; opacity: 0.85; }
.heic-converter .progress-bar {
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
  height: 4px;
  background: #ddd;
  border-radius: 2px;
  overflow: hidden;
  display: none;
  width: 100%;
}
.heic-converter .progress-bar.active { display: block; }
.heic-converter .progress-bar .progress-fill { transition: width 0.2s ease-out; }
.heic-converter .progress-fill {
  height: 100%;
  background: #4a8;
  width: 0%;
}
@media (prefers-reduced-motion: reduce) {
  .heic-converter .actions button:active, .heic-converter .file-item button:active { transform: none; }
}
@media print {
  .heic-converter .actions, .heic-converter .progress-bar, .heic-converter .file-list-wrap, .heic-converter .opts { display: none !important; }
  .heic-converter .dropzone { border-style: solid; cursor: default; }
}
.heic-converter .heic-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}