.agent-workspace {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 64px);
  height: calc(100dvh - 64px);
  padding: 16px 24px;
  box-sizing: border-box;
}

.agent-workspace .tracker-section-tabs {
  flex-shrink: 0;
  margin-bottom: 12px;
}

.agent-body {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  align-items: stretch;
  gap: 16px;
}

.agent-rail {
  flex: 0 0 272px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--surface-card);
  border: 1px solid var(--border-neutral);
  border-radius: 14px;
  overflow: hidden;
}

.agent-rail-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-light);
  cursor: pointer;
  border-bottom: 1px solid var(--surface-sunken);
  list-style: none;
  user-select: none;
}

.agent-rail-summary::-webkit-details-marker { display: none; }

.agent-rail-summary .material-icons { font-size: 18px; color: var(--text-faint); }

.agent-rail-count {
  margin-left: auto;
  background: var(--surface-sunken);
  color: var(--text-light);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
}

.agent-rail-list {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.agent-rail-new {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px dashed var(--border-neutral);
  color: var(--text-accent);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  flex-shrink: 0;
}

.agent-rail-new:hover { background: var(--accent-quiet); border-color: var(--text-accent); }
.agent-rail-new.is-active { background: var(--accent-quiet); border-style: solid; border-color: var(--accent-quiet); }
.agent-rail-new .material-icons { font-size: 18px; }

.agent-rail-filter {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  padding: 8px 12px;
  border-radius: 10px;
  color: var(--text-light);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  flex-shrink: 0;
}

.agent-rail-filter:hover { background: var(--surface-app); color: var(--text-main); }
.agent-rail-filter .material-icons { font-size: 18px; }

.agent-rail-items {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.agent-rail-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 9px 12px;
  border-radius: 10px;
  text-decoration: none;
  border-left: 3px solid transparent;
}

.agent-rail-item:hover { background: var(--surface-app); }

.agent-rail-item.is-active {
  background: var(--accent-quiet);
  border-left-color: var(--text-accent);
}

.agent-rail-item-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.agent-rail-item-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-faint);
}

.agent-rail-item-working { color: var(--text-accent); font-weight: 700; }
.agent-rail-item-failed { color: var(--danger); font-weight: 700; }

.agent-rail-empty {
  font-size: 12px;
  color: var(--text-faint);
  margin: 10px 12px;
  line-height: 1.5;
}

.agent-panel-shell {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--surface-card);
  border: 1px solid var(--border-neutral);
  border-radius: 14px;
  overflow: hidden;
}

.agent-panel-head {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--surface-sunken);
}

.agent-panel-title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.agent-panel-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.agent-panel-actions form { margin: 0; }

.agent-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-faint);
  cursor: pointer;
  padding: 0;
}

.agent-icon-button:hover { background: var(--danger-quiet); color: var(--danger); }
.agent-icon-button .material-icons { font-size: 19px; }

.agent-panel {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.agent-scroll {
  flex: 1 1 0;
  min-height: 2.5rem;
  overflow-y: auto;
  background: var(--surface-app);
  padding: 20px;
}

.agent-thread {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}

.agent-message { display: flex; gap: 10px; }
.agent-message.is-assistant { justify-content: flex-start; }
.agent-message.is-user { justify-content: flex-end; }

.agent-avatar {
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--text-accent);
  color: var(--surface-card);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.agent-avatar .material-icons { font-size: 17px; }

.agent-message-column {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.agent-message.is-assistant .agent-message-column { max-width: 88%; align-items: flex-start; }
.agent-message.is-user .agent-message-column { max-width: 72%; align-items: flex-end; }

.agent-bubble {
  box-sizing: border-box;
  max-width: 100%;
  border-radius: 16px;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.agent-message.is-assistant .agent-bubble {
  background: var(--surface-card);
  border: 1px solid var(--border-neutral);
  color: var(--text-main);
  border-bottom-left-radius: 5px;
}

.agent-message.is-user .agent-bubble {
  background: var(--text-accent);
  border: 1px solid var(--text-accent);
  color: var(--surface-card);
  border-bottom-right-radius: 5px;
}

.agent-message-body > *:first-child { margin-top: 0; }
.agent-message-body > *:last-child { margin-bottom: 0; }
.agent-message-body p { margin: 0 0 10px; }
.agent-message-body ul,
.agent-message-body ol { margin: 0 0 10px; padding-left: 20px; }
.agent-message-body li { margin-bottom: 4px; }

.agent-message-body h1,
.agent-message-body h2,
.agent-message-body h3,
.agent-message-body h4 {
  margin: 14px 0 8px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
}

.agent-message-body a { color: var(--text-accent); }
.agent-message.is-user .agent-message-body a { color: var(--accent-quiet); }

.agent-message-body code {
  background: var(--surface-sunken);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 12.5px;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
}

.agent-message.is-user .agent-message-body code {
  background: rgba(255, 255, 255, 0.16);
  color: var(--surface-card);
}

.agent-message-body pre {
  background: var(--text-main);
  color: var(--border-neutral);
  border-radius: 8px;
  padding: 12px 14px;
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.55;
  margin: 10px 0;
}

.agent-message-body pre code { background: none; padding: 0; color: inherit; }

.agent-message-body blockquote {
  margin: 10px 0;
  padding: 2px 0 2px 12px;
  border-left: 3px solid var(--border-neutral);
  color: var(--text-light);
}

.agent-message-body table {
  display: block;
  overflow-x: auto;
  max-width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  margin: 10px 0;
}

.agent-message-body th,
.agent-message-body td {
  border: 1px solid var(--border-neutral);
  padding: 6px 10px;
  text-align: left;
  white-space: nowrap;
}

.agent-message-body th { background: var(--surface-app); font-weight: 700; }

.agent-tools { max-width: 100%; }

.agent-tools-summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--surface-sunken);
  color: var(--text-light);
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.agent-tools-summary::-webkit-details-marker { display: none; }
.agent-tools-summary:hover { background: var(--border-neutral); color: var(--text-main); }
.agent-tools-summary .material-icons { font-size: 14px; }

.agent-tools-body {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.agent-tool {
  border: 1px solid var(--border-neutral);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--surface-card);
}

.agent-tool.is-failed { border-color: var(--danger-quiet); background: var(--danger-quiet); }

.agent-tool-name {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text-accent);
  margin-bottom: 6px;
}

.agent-tool-arguments {
  margin: 0;
  background: var(--surface-app);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--text-main);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 220px;
  overflow-y: auto;
}

.agent-tool-error {
  margin: 6px 0 0;
  font-size: 11.5px;
  color: var(--danger);
}

.agent-bubble--state {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-light);
  font-size: 13px;
  font-style: italic;
}

.agent-bubble--failed {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: var(--danger-quiet);
  border-color: var(--danger-quiet);
  color: var(--danger);
  font-size: 13px;
}

.agent-bubble--failed .material-icons { font-size: 18px; flex-shrink: 0; }

.agent-dots { display: inline-flex; gap: 3px; flex-shrink: 0; }

.agent-dots i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-faint);
  animation: agent-dot 1.2s ease-in-out infinite;
}

.agent-dots i:nth-child(2) { animation-delay: .16s; }
.agent-dots i:nth-child(3) { animation-delay: .32s; }

@keyframes agent-dot {
  0%, 60%, 100% { opacity: .25; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

@media (prefers-reduced-motion: reduce) {
  .agent-dots i { animation: none; opacity: .55; }
}

.agent-composer-dock {
  flex-shrink: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--surface-sunken);
  padding: 12px 20px 16px;
  background: var(--surface-card);
}

.agent-composer-dock .agent-composer { flex: 0 0 auto; max-width: 860px; margin: 0 auto; width: 100%; }

.agent-composer-dock .agent-question { min-height: 5rem; overflow-y: auto; }

.agent-composer-box {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid var(--border-neutral);
  border-radius: 18px;
  padding: 10px 12px 8px;
  background: var(--surface-card);
}

.agent-composer-box:focus-within {
  border-color: var(--text-accent);
  box-shadow: var(--focus-ring);
}

.agent-composer-box.is-armed {
  border-color: var(--text-accent);
  animation: agent-composer-arme 1.1s ease-out;
}

@keyframes agent-composer-arme {
  from { box-shadow: 0 0 0 7px var(--accent-quiet); }
  to { box-shadow: var(--focus-ring); }
}

.agent-composer-field {
  width: 100%;
  box-sizing: border-box;
  border: none;
  background: transparent;
  outline: none;
  resize: none;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-main);
  field-sizing: content;
  min-height: 134px;
  max-height: 268px;
  overflow-y: auto;
  padding: 0;
}

.agent-composer-field::placeholder { color: var(--text-faint); }
.agent-composer-field:disabled { background: transparent; color: var(--text-faint); }

.agent-composer-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.agent-model-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--surface-sunken);
  color: var(--text-light);
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
}

.agent-model-chip .material-icons { font-size: 14px; color: var(--text-faint); }
.agent-model-chip--quiet { background: transparent; color: var(--text-faint); padding-left: 0; }

.agent-send {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: var(--text-accent);
  color: var(--surface-card);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.agent-send:hover:not(:disabled) { background: var(--text-accent); }
.agent-send:disabled { background: var(--border-neutral); cursor: not-allowed; }
.agent-send .material-icons { font-size: 18px; }

.agent-starter {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--surface-app);
}

.agent-starter-inner {
  width: 100%;
  max-width: 640px;
  text-align: center;
}

.agent-starter-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: var(--text-accent);
  color: var(--surface-card);
  margin-bottom: 14px;
}

.agent-starter-mark .material-icons { font-size: 24px; }

.agent-starter-title {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
}

.agent-starter-rule {
  margin: 0 auto 20px;
  max-width: 520px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-light);
}

.agent-starter-caution {
  margin: 0 auto 16px;
  max-width: 520px;
  background: var(--warning-quiet);
  border: 1px solid var(--warning-quiet);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--warning);
}

.agent-starter-caution a { color: var(--warning); font-weight: 700; }

.agent-starter .agent-composer { text-align: left; }

.agent-starter .agent-composer-box {
  box-shadow: var(--shadow-raised);
}

.agent-starter-note {
  margin: 16px auto 0;
  max-width: 520px;
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--text-faint);
}

@media (max-width: 900px) {
  .agent-workspace { padding: 12px; }

  .agent-body { flex-direction: column; gap: 12px; }

  .agent-rail { flex: 0 0 auto; }

  .agent-rail-list { max-height: 30vh; }

  .agent-message.is-assistant .agent-message-column { max-width: 100%; }
  .agent-message.is-user .agent-message-column { max-width: 88%; }

  .agent-scroll { padding: 14px; }
  .agent-composer-dock { padding: 10px 12px 12px; }
}