/* Zeus / agent chat UI — loads after workspace-layout.css and owns the AI transcript,
   tool-call cards, composer, and status bar. */

.ai-assistant {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  overflow: hidden;
  font-size: var(--cs-readable-sm);
}

.ai-messages {
  flex: 1 1 0%;
  min-height: 0;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  overflow-y: auto;
  background: var(--md-surface-container-low);
}

.ai-message {
  width: 100%;
  max-width: 100%;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-radius: 0;
  font-size: 10.5px;
  line-height: 1.6;
}

.ai-message.ai-user {
  align-self: flex-end;
  width: fit-content;
  max-width: 88%;
  padding: 8px 12px;
  color: var(--md-on-primary-container);
  border-radius: 14px 14px 4px 14px;
  background: var(--md-primary-container);
}

.ai-message.ai-assistant {
  align-self: stretch;
  color: var(--md-on-surface);
  background: transparent;
  box-shadow: none;
}

.ai-message-header {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--md-on-surface);
  font-size: 11px;
  font-weight: 700;
}

.ai-message-avatar {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #ffffff;
  background: var(--md-primary);
}

.ai-message-avatar .material-symbols-rounded { font-size: 14px; color: #ffffff; }

.ai-message-tag {
  padding: 1px 7px;
  border-radius: var(--md-radius-full);
  background: var(--md-surface-variant);
  color: var(--md-on-surface-variant);
}

.ai-message-tag small { font-size: 8.5px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }

.ai-message-body { min-width: 0; white-space: pre-wrap; }
.ai-message-body p { margin: 0; overflow-wrap: anywhere; }
.ai-message-body button { margin-top: 9px; }

.ai-tool-activity {
  width: 100%;
  padding: 6px 10px;
  display: flex;
  flex-direction: column;
  gap: 0;
  color: var(--md-on-surface);
  border: 1px solid var(--md-outline-variant);
  border-radius: 8px;
  background: var(--md-surface-container-lowest);
  cursor: pointer;
  transition: border-color 150ms ease, background 120ms ease;
}

.ai-tool-activity:hover {
  background: var(--md-surface-container-low);
  border-color: var(--md-outline);
}

.ai-tool-head {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 100%;
}

.ai-tool-icon {
  width: 16px;
  height: 16px;
  display: grid;
  place-items: center;
  color: var(--md-primary);
  flex-shrink: 0;
}

.ai-tool-icon .material-symbols-rounded { font-size: 14px; }

.ai-tool-name {
  flex-shrink: 0;
  font: 600 10.5px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace;
  color: var(--md-on-surface);
}

.ai-tool-summary {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 9.5px;
  color: var(--md-on-surface-variant);
  text-align: right;
}

.ai-tool-chevron {
  display: grid;
  place-items: center;
  color: var(--md-on-surface-variant);
  flex-shrink: 0;
  transition: transform 150ms ease;
}

.ai-tool-chevron .material-symbols-rounded { font-size: 13px; }

.ai-tool-activity.is-open .ai-tool-chevron { transform: rotate(180deg); }

.ai-tool-status {
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.ai-tool-status .material-symbols-rounded { font-size: 14px; }

.ai-tool-detail {
  display: none;
  margin: 6px 0 2px;
  padding: 6px 8px;
  max-height: 200px;
  overflow: auto;
  border-radius: 6px;
  background: var(--md-surface-container-low);
  color: var(--md-on-surface-variant);
  font: 500 9px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.ai-tool-activity.is-open .ai-tool-detail { display: block; }
.ai-tool-activity.is-running { border-color: var(--md-primary); }
.ai-tool-activity.is-running .ai-tool-status { color: var(--md-primary); animation: cs-spin 1s linear infinite; }
.ai-tool-activity.is-done .ai-tool-status { color: #168354; }
.ai-tool-activity.is-error { border-color: var(--md-error); }
.ai-tool-activity.is-error .ai-tool-status { color: var(--md-error); }

.ai-prompt-box {
  flex: 0 0 auto;
  margin: 10px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border: 1px solid var(--md-outline-variant);
  border-radius: 16px;
  background: var(--md-surface-container-lowest);
  box-shadow: 0 2px 6px rgba(0, 0, 0, .04);
  transition: border-color var(--md-transition), box-shadow var(--md-transition);
}

.ai-prompt-box:focus-within {
  border-color: var(--md-primary);
  box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.18);
}

.ai-input {
  width: 100%;
  height: auto;
  min-height: 22px;
  max-height: 132px;
  padding: 2px 0 0;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  background: transparent;
  resize: none !important;
  overflow-y: auto;
  font-size: 12px;
  line-height: 1.5;
  color: var(--md-on-surface);
}

.ai-input:disabled { opacity: 0.65; }

.ai-input:focus,
.ai-input:focus-visible {
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
}

.ai-prompt-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px solid var(--md-outline-variant);
}

.ai-composer-actions { display: flex; gap: 6px; }

.ai-send-button {
  width: 32px;
  height: 32px;
  min-width: 32px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--md-primary);
  color: #ffffff;
  cursor: pointer;
  transition: background var(--md-transition), opacity var(--md-transition);
}

.ai-send-button:disabled {
  background: var(--md-surface-variant);
  color: var(--md-outline);
  opacity: 0.45;
  cursor: not-allowed;
}

.ai-send-button .material-symbols-rounded { font-size: 18px; }

.ai-stop-button {
  width: 32px;
  height: 32px;
  min-width: 32px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--md-error-container);
  color: var(--md-on-error-container);
  cursor: pointer;
  transition: filter var(--md-transition), opacity var(--md-transition);
}

.ai-stop-button:hover { filter: brightness(1.06); }
.ai-stop-button .material-symbols-rounded { font-size: 16px; }

.ai-status {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px 0;
  color: var(--md-on-surface-variant);
  font-size: 9.5px;
  line-height: 1.4;
}

.ai-status .material-symbols-rounded { font-size: 12px; color: var(--md-primary); animation: cs-spin 1.1s linear infinite; }