.structure{flex:1;display:flex;flex-direction:column;min-height:0}.field-list{flex:1;overflow-y:auto;min-height:0}.field-list:focus{outline:2px solid var(--color-border-focus);outline-offset:-2px}.field-row{display:grid;grid-template-columns:28px 72px 1fr;gap:var(--spacing-sm);padding:6px var(--spacing-sm);border-bottom:1px solid var(--color-border);align-items:center;cursor:pointer}.field-row:hover,.field-row--selected{background:var(--color-bg-secondary)}.expand-toggle{width:28px;color:var(--color-text-secondary);user-select:none;display:flex;align-items:center;gap:2px}.dirty-dot{color:var(--color-warn);font-size:10px;line-height:1;width:10px;text-align:center}.expand-icon{width:16px;text-align:center}.tag-badge{font-family:var(--font-mono);font-size:var(--font-size-xs);border-radius:999px;padding:2px 8px;color:#fff;width:fit-content}.tag-badge--varint{background:var(--color-wt-varint)}.tag-badge--i64{background:var(--color-wt-i64)}.tag-badge--len{background:var(--color-wt-len)}.tag-badge--i32{background:var(--color-wt-i32)}.payload-summary{font-family:var(--font-mono);font-size:var(--font-size-sm);color:var(--color-text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.breadcrumb{padding:var(--spacing-sm);border-bottom:1px solid var(--color-border);font-size:var(--font-size-sm);color:var(--color-text-secondary);display:flex;gap:var(--spacing-xs);flex-wrap:wrap}.breadcrumb-item{cursor:pointer}.breadcrumb-sep{color:var(--color-text-tertiary)}.envelope-frames{border-bottom:1px solid var(--color-border);min-height:0;display:flex;flex-direction:column;overflow-x:hidden}.envelope-frames-header{padding:var(--spacing-sm);border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-sm);background:var(--color-bg-secondary);flex-wrap:wrap}.envelope-frames-title{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-family:var(--font-mono);min-width:0}.envelope-frames-controls{display:flex;align-items:center;justify-content:flex-end;gap:var(--spacing-xs);flex-wrap:wrap}.envelope-frames-list{display:grid;height:180px;min-height:72px;max-height:60vh;overflow:auto;overflow-x:hidden;resize:vertical}.inspector-panel{border-top:1px solid var(--color-border);background:var(--color-bg-elevated);display:flex;flex-direction:column;min-height:0}.inspector-panel-header{padding:var(--spacing-sm);border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-sm);background:var(--color-bg-secondary);flex-wrap:wrap}.inspector-panel-title{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-family:var(--font-mono);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.inspector-panel-actions{display:flex;gap:var(--spacing-xs);align-items:center;justify-content:flex-end;flex-wrap:wrap}.frame-row{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-sm);padding:6px var(--spacing-sm);border-bottom:1px solid var(--color-border);cursor:pointer}.frame-row:hover,.frame-row--selected{background:var(--color-bg-secondary)}.frame-meta{flex:1;min-width:0;font-family:var(--font-mono);font-size:var(--font-size-xs);color:var(--color-text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.frame-suffix{color:var(--color-text-tertiary)}.frame-actions{display:flex;gap:var(--spacing-xs)}.inspector{border-top:none;background:transparent;padding:var(--spacing-sm);max-height:45vh;overflow:auto}.inspector-empty{color:var(--color-text-tertiary);font-size:var(--font-size-sm)}.inspector-header{display:flex;justify-content:space-between;gap:var(--spacing-sm);align-items:center}.inspector-title{font-size:var(--font-size-base);color:var(--color-text-secondary);font-family:var(--font-mono)}.inspector-actions{display:flex;gap:var(--spacing-sm)}.inspector-meta{margin-top:var(--spacing-sm);display:grid;gap:2px;color:var(--color-text-tertiary);font-size:var(--font-size-sm);font-family:var(--font-mono)}.inspector-editor{margin-top:var(--spacing-sm);display:grid;gap:var(--spacing-sm)}.inspector-error{color:var(--color-error);font-size:var(--font-size-sm)}.inspector-hint{color:var(--color-text-tertiary);font-size:var(--font-size-sm);font-family:var(--font-mono);word-break:break-word}.inspector-label{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.inspector-input{width:100%;min-width:0}.inspector-textarea{width:100%;min-height:96px;resize:vertical;font-family:var(--font-mono);font-size:var(--font-size-sm)}.inspector-btn{width:fit-content}.inspector-section{margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--color-border)}.inspector-summary{cursor:pointer;user-select:none;color:var(--color-text-secondary);font-size:var(--font-size-sm);font-family:var(--font-mono)}.inspector-summary::-webkit-details-marker{display:none}.inspector-section[open]>.inspector-summary{margin-bottom:var(--spacing-sm)}