/* Base64 인코더/디코더 전용 스타일 */

/* header-actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* textarea */
textarea {
  width: 100%;
  min-height: 180px;
  padding: 1rem;
  border: none;
  outline: none;
  resize: vertical;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", "Consolas", monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  background: var(--surface);
  color: var(--text);
}

textarea::placeholder {
  color: var(--text-sub);
  opacity: 0.6;
}

textarea[readonly] {
  cursor: default;
}

/* 버튼 행 */
.btn-row {
  display: flex;
  gap: 0.5rem;
  margin: 1rem 0;
  flex-wrap: wrap;
  align-items: center;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-sub);
}

.btn-copy {
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--surface);
  color: var(--text-sub);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-copy:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* 반응형 */
@media (max-width: 480px) {
  .btn {
    padding: 0.45rem 0.7rem;
    font-size: 0.8rem;
  }

  textarea {
    min-height: 140px;
    font-size: 0.8rem;
  }
}