#tool-body {
  --c-primary: #4e6ef2;
  --c-primary-dark: #3b56d4;
  --c-primary-soft: #eef1fe;
  --c-bg: #f5f7fa;
  --c-card: #ffffff;
  --c-border: #e4e8ef;
  --c-text: #2c3e50;
  --c-text-muted: #7f8c8d;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--c-text);
}
.theme-dark-mode #tool-body {
  --c-primary-soft: #252a45;
  --c-bg: #1a1d23;
  --c-card: #222222;
  --c-border: #333333;
  --c-text: #e0e6f0;
  --c-text-muted: #8896a8;
}

#tool-body .uc-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 16px 0 40px;
}

/* 分類切換 */
#tool-body .uc-cat-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
#tool-body .uc-cat-btn {
  padding: 7px 18px;
  border-radius: 20px;
  border: 1.5px solid var(--c-border);
  background: var(--c-card);
  color: var(--c-text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all .18s;
}
#tool-body .uc-cat-btn:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}
#tool-body .uc-cat-btn.active {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}

/* 卡片 */
#tool-body .uc-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
}

/* 換算行 */
#tool-body .uc-conv-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
#tool-body .uc-value-wrap {
  flex: 1 1 170px;
}
#tool-body .uc-value-wrap .layui-input {
  height: 44px;
  font-size: 16px;
}
#tool-body .uc-value-wrap .layui-input-affix {
  line-height: 44px;
}
#tool-body .uc-unit-sel {
  flex: 1 1 150px;
}
#tool-body .uc-unit-sel .layui-input {
  height: 44px;
  line-height: 44px;
}
#tool-body .uc-swap {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--c-border);
  background: var(--c-card);
  color: var(--c-primary);
  font-size: 15px;
  cursor: pointer;
  transition: all .18s;
}
#tool-body .uc-swap:hover {
  border-color: var(--c-primary);
  background: var(--c-primary-soft);
}

/* 結果區 */
#tool-body .uc-result {
  margin-top: 20px;
  padding: 18px 20px;
  border-radius: 10px;
  background: var(--c-primary-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
#tool-body .uc-result-eq {
  font-size: 14px;
  color: var(--c-text-muted);
  margin-bottom: 4px;
  word-break: break-all;
}
#tool-body .uc-result-val {
  font-size: 28px;
  font-weight: 700;
  color: var(--c-primary);
  word-break: break-all;
  line-height: 1.3;
}
#tool-body .uc-copy-btn {
  padding: 0 20px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: var(--c-primary);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: background .18s;
  white-space: nowrap;
}
#tool-body .uc-copy-btn:hover {
  background: var(--c-primary-dark);
}
#tool-body .uc-copy-btn i {
  margin-right: 6px;
}

/* 全部單位 */
#tool-body .uc-table-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
}
#tool-body .uc-all-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 8px;
}
#tool-body .uc-all-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color .15s;
}
#tool-body .uc-all-item:hover {
  border-color: var(--c-primary);
}
#tool-body .uc-all-item.cur {
  border-color: var(--c-primary);
  background: var(--c-primary-soft);
}
#tool-body .uc-all-name {
  font-size: 13px;
  color: var(--c-text-muted);
  white-space: nowrap;
}
#tool-body .uc-all-val {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  text-align: right;
  word-break: break-all;
}

@media (max-width: 600px) {
  #tool-body .uc-card { padding: 16px; }
  #tool-body .uc-result-val { font-size: 22px; }
  #tool-body .uc-swap { margin: 0 auto; }
}
#tool-body {
  --c-primary: #4e6ef2;
  --c-primary-dark: #3b56d4;
  --c-primary-soft: #eef1fe;
  --c-bg: #f5f7fa;
  --c-card: #ffffff;
  --c-border: #e4e8ef;
  --c-text: #2c3e50;
  --c-text-muted: #7f8c8d;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--c-text);
}
.theme-dark-mode #tool-body {
  --c-primary-soft: #252a45;
  --c-bg: #1a1d23;
  --c-card: #222222;
  --c-border: #333333;
  --c-text: #e0e6f0;
  --c-text-muted: #8896a8;
}

#tool-body .uc-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 16px 0 40px;
}

/* 分類切換 */
#tool-body .uc-cat-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
#tool-body .uc-cat-btn {
  padding: 7px 18px;
  border-radius: 20px;
  border: 1.5px solid var(--c-border);
  background: var(--c-card);
  color: var(--c-text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all .18s;
}
#tool-body .uc-cat-btn:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}
#tool-body .uc-cat-btn.active {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}

/* 卡片 */
#tool-body .uc-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
}

/* 換算行 */
#tool-body .uc-conv-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
#tool-body .uc-value-wrap {
  flex: 1 1 170px;
}
#tool-body .uc-value-wrap .layui-input {
  height: 44px;
  font-size: 16px;
}
#tool-body .uc-value-wrap .layui-input-affix {
  line-height: 44px;
}
#tool-body .uc-unit-sel {
  flex: 1 1 150px;
}
#tool-body .uc-unit-sel .layui-input {
  height: 44px;
  line-height: 44px;
}
#tool-body .uc-swap {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--c-border);
  background: var(--c-card);
  color: var(--c-primary);
  font-size: 15px;
  cursor: pointer;
  transition: all .18s;
}
#tool-body .uc-swap:hover {
  border-color: var(--c-primary);
  background: var(--c-primary-soft);
}

/* 結果區 */
#tool-body .uc-result {
  margin-top: 20px;
  padding: 18px 20px;
  border-radius: 10px;
  background: var(--c-primary-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
#tool-body .uc-result-eq {
  font-size: 14px;
  color: var(--c-text-muted);
  margin-bottom: 4px;
  word-break: break-all;
}
#tool-body .uc-result-val {
  font-size: 28px;
  font-weight: 700;
  color: var(--c-primary);
  word-break: break-all;
  line-height: 1.3;
}
#tool-body .uc-copy-btn {
  padding: 0 20px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: var(--c-primary);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: background .18s;
  white-space: nowrap;
}
#tool-body .uc-copy-btn:hover {
  background: var(--c-primary-dark);
}
#tool-body .uc-copy-btn i {
  margin-right: 6px;
}

/* 全部單位 */
#tool-body .uc-table-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
}
#tool-body .uc-all-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 8px;
}
#tool-body .uc-all-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color .15s;
}
#tool-body .uc-all-item:hover {
  border-color: var(--c-primary);
}
#tool-body .uc-all-item.cur {
  border-color: var(--c-primary);
  background: var(--c-primary-soft);
}
#tool-body .uc-all-name {
  font-size: 13px;
  color: var(--c-text-muted);
  white-space: nowrap;
}
#tool-body .uc-all-val {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  text-align: right;
  word-break: break-all;
}

@media (max-width: 600px) {
  #tool-body .uc-card { padding: 16px; }
  #tool-body .uc-result-val { font-size: 22px; }
  #tool-body .uc-swap { margin: 0 auto; }
}