langgraph-tracing 0.2.4

:root {
  --bg: #ffffff;
  --bg-secondary: #f8f9fa;
  --border: #e5e7eb;
  --text: #1f2937;
  --text-secondary: #6b7280;
  --primary: #3b82f6;
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
  --radius: 6px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 14px;
}

.app { min-height: 100vh; display: flex; flex-direction: column; }

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.app-header h1 { font-size: 18px; font-weight: 600; }
.header-right { display: flex; align-items: center; gap: 12px; }
.trace-count { color: var(--text-secondary); font-size: 13px; }

.app-main { flex: 1; padding: 24px; max-width: 1400px; margin: 0 auto; width: 100%; }

.btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
}
.btn:hover { background: var(--bg-secondary); }
.btn-danger { color: var(--error); border-color: var(--error); }
.btn-back { border: none; padding: 4px 8px; color: var(--primary); }

.filters {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  align-items: center;
}

.filter-input, .filter-select {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  background: var(--bg);
}
.filter-input { width: 240px; }

.loading, .empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}
.empty-hint { font-size: 13px; margin-top: 8px; }

/* Traces table */
.traces-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.traces-table th {
  text-align: left;
  padding: 10px 14px;
  background: var(--bg-secondary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}
.traces-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.trace-row { cursor: pointer; }
.trace-row:hover { background: var(--bg-secondary); }
.trace-name { font-weight: 500; }

.status-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  color: white;
  text-transform: uppercase;
}

/* Trace detail */
.detail-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.detail-header h2 { font-size: 18px; }
.trace-time { color: var(--text-secondary); font-size: 13px; }

.detail-meta {
  display: flex;
  gap: 24px;
  margin-bottom: 20px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
}
.meta-item { font-size: 13px; }
.field-label { font-weight: 600; color: var(--text-secondary); margin-right: 6px; }
.mono { font-family: 'SF Mono', 'Consolas', monospace; font-size: 12px; }

.detail-section {
  margin-bottom: 16px;
}
.json-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  font-size: 12px;
  font-family: 'SF Mono', 'Consolas', monospace;
  overflow-x: auto;
  max-height: 300px;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Span tree */
.span-tree { border: 1px solid var(--border); border-radius: var(--radius); }
.span-group { border-bottom: 1px solid var(--border); }
.span-group:last-child { border-bottom: none; }

.span-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  cursor: pointer;
}
.span-row:hover { background: var(--bg-secondary); }
.span-error { background: #fef2f2; }
.span-error:hover { background: #fee2e2; }

.span-info { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; }
.span-expand { width: 16px; text-align: center; font-size: 10px; color: var(--text-secondary); }
.span-expand.has-children { cursor: pointer; }

.span-type-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  color: white;
  text-transform: uppercase;
  flex-shrink: 0;
}
.span-name { font-weight: 500; }
.span-tokens { color: var(--text-secondary); font-size: 12px; }
.span-duration { color: var(--text-secondary); font-size: 12px; margin-left: auto; flex-shrink: 0; }

.span-waterfall-bar {
  width: 200px;
  height: 16px;
  position: relative;
  flex-shrink: 0;
  margin-left: 12px;
}
.span-bar {
  position: absolute;
  top: 3px;
  height: 10px;
  border-radius: 3px;
  opacity: 0.7;
  min-width: 2px;
}

.span-detail { padding: 12px 16px; background: var(--bg-secondary); }
.detail-field { margin-bottom: 6px; font-size: 13px; }

.span-children { border-top: 1px solid var(--border); }