.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 64px;
  display: flex;
  flex-direction: column;
  gap: var(--space-7);
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-6);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.brand-mark {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand-label {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--color-muted);
}

.brand-tagline {
  margin-top: var(--space-2);
  color: var(--color-muted);
  max-width: 460px;
}

.header-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-6);
}

.panel {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  min-height: 560px;
  box-shadow: var(--shadow-soft);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
}

.panel-subtitle {
  margin-top: var(--space-2);
  color: var(--color-muted);
  font-size: 0.95rem;
}

.panel-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.editor-shell {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.editor-shell:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(31, 111, 92, 0.12);
}

.editor-meta {
  display: flex;
  gap: var(--space-4);
  color: var(--color-muted);
  font-size: 0.85rem;
  flex-wrap: wrap;
}

#jsonInput,
#jsonOutput {
  width: 100%;
  min-height: 320px;
  border: none;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-ink);
  outline: none;
}

#jsonOutput {
  min-height: 260px;
}

#treeView,
#analysisView {
  min-height: 260px;
}

#analysisView {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.tabs {
  display: flex;
  gap: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-2);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.status {
  min-height: 24px;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: 0.95rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-3);
}

.site-footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  color: var(--color-muted);
  font-size: 0.9rem;
}

.shortcut-hint {
  font-size: 0.85rem;
}

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .panel {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-actions {
    width: 100%;
  }

  .panel-header {
    flex-direction: column;
  }

  #jsonInput,
  #jsonOutput {
    min-height: 240px;
  }
}