.pdf-tool {
  display: grid;
  gap: 20px;
}

.pdf-panel {
  display: grid;
  gap: 14px;
  padding: 16px;
  background: rgb(255 255 255 / 76%);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.file-drop {
  display: grid;
  gap: 8px;
  place-items: center;
  padding: 28px 16px;
  color: var(--muted);
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: 8px;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
}

.file-drop input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.image-list {
  display: grid;
  gap: 10px;
}

.image-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.image-row img {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.image-row .file-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 700;
}

.image-row .page-number {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: end;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 850;
  text-transform: uppercase;
}

.field input[type="range"] {
  min-width: 160px;
}

.field output {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

@media (max-width: 860px) {
  .field-row {
    flex-direction: column;
    align-items: stretch;
  }

  #generateBtn {
    width: 100%;
  }
}