:root {
  --bg: #0f1117;
  --panel: #171a23;
  --border: #262b38;
  --text: #e6e8ee;
  --muted: #8a90a2;
  --accent: #6ea8fe;
  --user: #1f3a5f;
  --assistant: #1c2230;
  --error: #5f1f2b;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.brand {
  font-weight: 600;
  letter-spacing: 0.2px;
}

.lock {
  margin-right: 0.35rem;
}

.session {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.status {
  color: var(--muted);
  font-size: 0.85rem;
}

.status.active {
  color: var(--accent);
}

button {
  background: var(--accent);
  color: #0b1220;
  border: 0;
  border-radius: 7px;
  padding: 0.45rem 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#logout {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}

.layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  width: min(1720px, 100%);
  margin: 0 auto;
  padding: 1rem;
  gap: 0.75rem;
  min-height: 0;
}

.workspace {
  flex: 1;
  display: flex;
  flex-direction: row;
  gap: 0.75rem;
  min-height: 0;
}

.chat-column {
  width: 420px;
  flex: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
  min-height: 0;
}

/* --- live request flow ---------------------------------------------- */

.live-traces {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-width: 0;
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  padding: 0.75rem;
}

.live-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.live-head h2 {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.live-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.live-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
  flex: none;
}

.live-dot.on {
  background: #4ade80;
  box-shadow: 0 0 8px #4ade8088;
}

.trace-feed {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.75rem;
}

.trace-empty {
  color: var(--muted);
  padding: 2rem;
  text-align: center;
}

.trace-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  overflow: hidden;
}

.trace-card.has-error {
  border-color: #5f1f2b;
}

.trace-card-head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: transparent;
  color: var(--text);
  border: 0;
  padding: 0.45rem 0.6rem;
  font: inherit;
  font-size: 0.78rem;
  text-align: left;
}

.trace-card-head:hover {
  background: var(--assistant);
}

.trace-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  flex: none;
}

.trace-status.error {
  background: #f87171;
}

.trace-root {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.trace-actor {
  color: var(--accent);
  flex: none;
}

.trace-instance {
  color: var(--muted);
  flex: none;
}

.trace-meta {
  margin-left: auto;
  color: var(--muted);
  flex: none;
}

.trace-caret {
  color: var(--muted);
  flex: none;
}

.waterfall {
  padding: 0.2rem 0.6rem 0.5rem;
  display: flex;
  flex-direction: column;
}

.waterfall-row {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 64px;
  align-items: start;
  gap: 0.75rem;
  background: transparent;
  border: 0;
  padding: 0.28rem 0.2rem;
  font: inherit;
  font-size: 0.74rem;
  color: var(--text);
  text-align: left;
  border-radius: 6px;
}

.waterfall-row:hover,
.waterfall-row.selected {
  background: var(--assistant);
}

.waterfall-label {
  min-width: 0;
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
  white-space: normal;
}

.waterfall-service {
  flex: none;
  font-size: 0.66rem;
  padding: 0.02rem 0.35rem;
  border-radius: 4px;
  background: var(--assistant);
}

.waterfall-ms {
  color: var(--muted);
  text-align: right;
  padding-top: 0.02rem;
}

.svc-c0 .waterfall-service {
  background: #2563eb;
  color: #dbeafe;
}

.svc-c1 .waterfall-service {
  background: #7c3aed;
  color: #ede9fe;
}

.svc-c2 .waterfall-service {
  background: #0d9488;
  color: #ccfbf1;
}

.svc-c3 .waterfall-service {
  background: #d97706;
  color: #fef3c7;
}

.svc-c4 .waterfall-service {
  background: #db2777;
  color: #fce7f3;
}

.svc-c5 .waterfall-service {
  background: #65a30d;
  color: #ecfccb;
}

.span-detail {
  margin: 0.1rem 0.4rem 0.4rem;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  font-size: 0.72rem;
  color: var(--muted);
}

.span-detail pre {
  margin: 0.4rem 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}

.span-error {
  color: #f87171;
}

/* --- data panel ------------------------------------------------------ */

.data-panel.wide {
  width: auto;
  flex: none;
  flex-direction: row;
  align-items: stretch;
  height: 220px;
}

.data-panel.wide .data-left {
  width: 360px;
  flex: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.data-panel.wide .data-result {
  flex: 1;
}

.data-left {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 0;
}

.data-panel {
  width: 340px;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  min-height: 0;
}

.data-panel h2 {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-controls {
  display: flex;
  gap: 0.5rem;
}

.data-controls select {
  flex: 1;
  min-width: 0;
}

.data-param {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.4rem 0.6rem;
  font: inherit;
  font-size: 0.8rem;
}

.chat-tabs {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.chat-tab {
  background: var(--panel);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.3rem 0.7rem;
  font-weight: 500;
}

.chat-tab.active {
  color: var(--text);
  border-color: var(--accent);
}

.chat-tab.new {
  color: var(--accent);
}

.data-path {
  color: var(--muted);
  font-size: 0.72rem;
  word-break: break-all;
}

.data-result {
  flex: 1;
  overflow: auto;
  margin: 0;
  padding: 0.6rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.74rem;
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-word;
}

.data-result.error {
  background: var(--error);
}

@media (max-width: 1100px) {
  .workspace {
    flex-direction: column;
  }

  .chat-column {
    width: auto;
  }

  .live-traces {
    min-height: 320px;
  }

  .data-panel.wide {
    flex-direction: column;
    height: auto;
    max-height: 45vh;
  }

  .data-panel.wide .data-left {
    width: auto;
  }
}

.controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.controls label {
  color: var(--muted);
  font-size: 0.85rem;
}

select {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.4rem 0.6rem;
}

.hint {
  color: var(--muted);
  font-size: 0.8rem;
  margin-left: auto;
}

.messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
}

.message {
  max-width: 85%;
  padding: 0.6rem 0.8rem;
  border-radius: 10px;
  white-space: pre-wrap;
  line-height: 1.45;
}

.message.user {
  align-self: flex-end;
  background: var(--user);
}

.message.assistant {
  align-self: flex-start;
  background: var(--assistant);
}

.message.error {
  background: var(--error);
}

.composer {
  display: flex;
  gap: 0.6rem;
}

textarea {
  flex: 1;
  resize: none;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.8rem;
  font: inherit;
}

.model-picker {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.model-current {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.4rem 0.6rem;
  font: inherit;
  font-weight: 400;
  text-align: left;
}

.model-current .model-id {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.model-caret {
  color: var(--muted);
}

.model-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.model-menu-controls {
  display: flex;
  gap: 0.4rem;
}

.model-menu-controls input {
  flex: 1;
  min-width: 0;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.35rem 0.55rem;
  font: inherit;
  font-size: 0.85rem;
}

.model-options {
  max-height: 280px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.model-option {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  background: transparent;
  color: var(--text);
  border: 0;
  border-radius: 6px;
  padding: 0.35rem 0.5rem;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 400;
  text-align: left;
}

.model-option:hover {
  background: var(--assistant);
}

.model-option.active {
  background: var(--user);
}

.model-option .model-id {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.model-option .model-cost {
  color: var(--muted);
  font-size: 0.72rem;
  white-space: nowrap;
}

.model-more {
  color: var(--muted);
  font-size: 0.72rem;
  padding: 0.35rem 0.5rem;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tabs button {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem 0.85rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.tabs button.active {
  background: var(--user);
  border-color: transparent;
}

.tabs button:disabled {
  opacity: 0.5;
  cursor: default;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.data-table th,
.data-table td {
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 0.65rem;
  text-align: left;
}

.data-table th {
  color: var(--muted);
  font-weight: 500;
}

.mono {
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
}

.table-scroll {
  overflow-x: auto;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.field-block {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
}

.field-block.wide {
  grid-column: 1 / -1;
}

.field-block span {
  color: var(--muted);
}

.field-block select,
.field-block textarea {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.65rem;
  font: inherit;
}

.inline-field {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.inline-field select {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.35rem 0.5rem;
  font: inherit;
}

.chat-shell {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 420px;
}

.chat-toolbar {
  display: flex;
  gap: 0.75rem;
}

.chat-shell .messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 0.5rem 0;
  min-height: 280px;
}

.chat-shell .composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
  align-items: end;
}

.chat-shell .composer textarea {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem;
  font: inherit;
  resize: vertical;
}

.chat-shell .composer button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 0.65rem 1rem;
  font: inherit;
  cursor: pointer;
}

.chat-shell .composer button:disabled {
  opacity: 0.5;
  cursor: default;
}

.message.error .bubble {
  color: #f87171;
}

.note.error {
  color: #f87171;
  margin-bottom: 0.75rem;
}