:root {
  --zbtool-shell-padding: 10px;
  --zbtool-workspace-gap: 14px;
  --zbtool-intro-font-size: 14px;
  --zbtool-lang-min-width: 210px;
  --zbtool-lang-label-size: 14px;
  --zbtool-lang-select-height: 40px;
  --tool-surface: #ffffff;
  --tool-surface-soft: #f6f8fb;
  --tool-border: #d8e1ec;
  --tool-accent: #2563eb;
  --tool-accent-soft: #e9f1ff;
  --tool-success: #0f9f63;
  --tool-danger: #d44c4c;
}

.format-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.75fr) minmax(280px, 0.95fr);
  gap: 16px;
}

.tool-stack {
  display: grid;
  gap: 14px;
}

.tool-block {
  padding: 18px;
  border: 1px solid var(--tool-border);
  border-radius: 18px;
  background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
}

.editor-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.editor-card label,
.field-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 14px;
  color: #526072;
}

.field-note {
  font-size: 12px;
  color: #8190a5;
}

.editor-box {
  box-sizing: border-box;
  width: 100%;
  min-height: 320px;
  padding: 14px 15px;
  border: 1px solid var(--tool-border);
  border-radius: 16px;
  resize: vertical;
  background: var(--tool-surface);
  color: #334155;
  line-height: 1.7;
  font-size: 14px;
}

.editor-box.wrap-off {
  white-space: pre;
  overflow-x: auto;
}

.editor-box.result-box {
  color: #1657c0;
  background: #fbfdff;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.action-row button {
  border: 1px solid #cdd7e3;
  background: #f6f8fb;
  color: #415166;
  border-radius: 12px;
  padding: 10px 16px;
  font-size: 14px;
  cursor: pointer;
}

.action-row button.primary {
  background: linear-gradient(135deg, #2b6fff 0%, #4d87ff 100%);
  border-color: #2b6fff;
  color: #fff;
}

.action-row button.accent {
  background: #eef5ff;
  border-color: #bed5ff;
  color: #1f5cc4;
}

.option-grid {
  display: grid;
  gap: 14px;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--tool-border);
  border-radius: 14px;
  background: var(--tool-surface-soft);
}

.toggle-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--tool-border);
  border-radius: 14px;
  background: #fff;
  color: #42526b;
}

.separator-row {
  display: grid;
  grid-template-columns: 1fr 120px;
  gap: 12px;
  align-items: end;
}

.separator-row input {
  height: 44px;
  border: 1px solid var(--tool-border);
  border-radius: 12px;
  padding: 0 12px;
  background: #fff;
  color: #334155;
}

.tool-tip {
  min-height: 24px;
  color: #5f6e82;
  font-size: 14px;
}

.tool-tip.error {
  color: var(--tool-danger);
}

.stats-grid {
  display: grid;
  gap: 10px;
}

.stat-card {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--tool-border);
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.stat-card span {
  display: block;
  font-size: 13px;
  color: #74839a;
}

.stat-card strong {
  display: block;
  margin-top: 6px;
  font-size: 24px;
  color: #13243a;
}

.feature-list {
  margin: 0;
  padding-left: 18px;
  color: #4d5f77;
  line-height: 1.8;
}

.panel-related h2 {
  margin: 0 0 10px;
  font-size: 18px;
  color: #223147;
}

@media (max-width: 1160px) {
  .format-layout,
  .editor-grid,
  .check-grid,
  .separator-row {
    grid-template-columns: 1fr;
  }
}