:root {
  color-scheme: light;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  --bg: #f4f7f9;
  --sidebar: #202731;
  --sidebar-soft: #2c3644;
  --line: #dce4ea;
  --text: #10202b;
  --muted: #657385;
  --brand: #19735e;
  --brand-strong: #0d5f4e;
  --assistant: #f0f3f6;
  --user: #e4f5ee;
  --danger: #b42318;
  --shadow: 0 16px 40px rgba(20, 37, 49, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr);
  background: var(--bg);
  color: var(--text);
}

button,
textarea {
  font: inherit;
}

.sidebar {
  min-height: 100vh;
  padding: 28px 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  background: var(--sidebar);
  color: #fff;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 0 8px;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
}

.brand strong {
  display: block;
  font-size: 18px;
  line-height: 1.2;
}

.brand span,
.session-card span {
  display: block;
  color: #c4ccd8;
  font-size: 12px;
  margin-top: 3px;
}

.nav {
  display: grid;
  gap: 8px;
}

.nav-item {
  border: 0;
  border-radius: 8px;
  padding: 12px 14px;
  color: #e9eef5;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.nav-item.active,
.nav-item:hover {
  background: var(--sidebar-soft);
}

.session-card {
  margin-top: auto;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #f59e0b;
  box-shadow: 0 0 0 6px rgba(245, 158, 11, 0.16);
  flex: 0 0 auto;
}

.status-dot.ok {
  background: #12b981;
  box-shadow: 0 0 0 6px rgba(18, 185, 129, 0.16);
}

.status-dot.error {
  background: #ef4444;
  box-shadow: 0 0 0 6px rgba(239, 68, 68, 0.16);
}

.shell {
  min-width: 0;
  padding: 28px 24px 24px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.topbar h1 {
  margin: 0;
  font-size: 28px;
  letter-spacing: 0;
}

.topbar p {
  margin: 4px 0 0;
  color: var(--muted);
}

.icon-button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  border-radius: 8px;
  height: 36px;
  padding: 0 14px;
  cursor: pointer;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(580px, 1fr) 360px;
  gap: 16px;
  align-items: stretch;
}

.chat-card,
.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.chat-card {
  min-height: calc(100vh - 118px);
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  overflow: hidden;
}

.messages {
  padding: 18px;
  overflow: auto;
  scroll-behavior: smooth;
}

.message-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.message-row.user {
  grid-template-columns: minmax(0, 1fr) 34px;
}

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #d9f0e9;
  color: var(--brand-strong);
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 700;
  overflow: hidden;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bubble {
  width: min(100%, 760px);
  border-radius: 8px;
  padding: 14px 16px;
  background: var(--assistant);
  line-height: 1.7;
  white-space: pre-wrap;
}

.message-row.user .bubble {
  justify-self: end;
  background: var(--user);
}

.message-row.user .avatar {
  grid-column: 2;
  grid-row: 1;
}

.message-row.user .bubble {
  grid-column: 1;
  grid-row: 1;
}

.typing {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}

.typing i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #7aa89e;
  animation: pulse 1s infinite ease-in-out;
}

.typing i:nth-child(2) {
  animation-delay: 0.15s;
}

.typing i:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes pulse {
  0%,
  80%,
  100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  40% {
    opacity: 1;
    transform: translateY(-2px);
  }
}

.table-card {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}

.table-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: #f8fafb;
  border-bottom: 1px solid var(--line);
}

.table-head strong {
  font-size: 14px;
}

.table-head button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--brand-strong);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  white-space: nowrap;
}

.table-wrap {
  overflow: auto;
  max-height: 420px;
}

table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 13px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  word-break: break-word;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #f8fafb;
  color: #2e3a46;
  font-weight: 700;
}

.composer {
  margin: 0 18px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #fff;
}

.composer:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(25, 115, 94, 0.12);
}

.composer textarea {
  width: 100%;
  min-height: 68px;
  max-height: 180px;
  border: 0;
  outline: 0;
  resize: vertical;
  color: var(--text);
}

.composer-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.send-button {
  border: 0;
  border-radius: 8px;
  min-width: 92px;
  height: 42px;
  padding: 0 16px;
  background: var(--brand);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
}

.send-button:disabled {
  cursor: not-allowed;
  opacity: 0.66;
}

.send-icon,
.send-text {
  white-space: nowrap;
}

.inspector {
  display: grid;
  align-content: start;
  gap: 14px;
  max-height: calc(100vh - 118px);
  overflow: auto;
}

.panel {
  padding: 16px;
  box-shadow: none;
}

.panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel h2 {
  margin: 0;
  font-size: 18px;
}

.kv {
  display: grid;
  gap: 12px;
  margin: 0;
}

.kv div {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 8px;
}

.kv dt {
  color: var(--muted);
}

.kv dd {
  margin: 0;
  font-weight: 700;
  word-break: break-all;
}

.tool-list,
.trace-list {
  display: grid;
  gap: 8px;
}

.tool-item,
.trace-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #fff;
}

.tool-item strong,
.trace-item strong {
  display: block;
  font-size: 14px;
}

.tool-item span,
.trace-item span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
  word-break: break-word;
}

.phase-error strong {
  color: var(--danger);
}

@media (max-width: 1120px) {
  body {
    grid-template-columns: 1fr;
  }

  .sidebar {
    min-height: auto;
    flex-direction: row;
    align-items: center;
  }

  .nav {
    grid-auto-flow: column;
    margin-left: auto;
  }

  .session-card {
    margin-top: 0;
    min-width: 190px;
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .inspector {
    max-height: none;
  }
}