.agent-chat {
  position: fixed;
  inset: 0;
  z-index: 80;
  font-family: var(--font-ui);
  font-weight: 500;
  pointer-events: none;
  view-transition-name: none;
}

.agent-chat [hidden] {
  display: none;
}

.agent-chat button,
.agent-chat textarea {
  font: inherit;
}

.agent-chat-mount {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  padding: 0.55rem 0.9rem 0.55rem 0.75rem;
  box-shadow: 0 0.5rem 1.75rem rgb(0 0 0 / 0.16);
  cursor: pointer;
  pointer-events: auto;
}

.agent-chat-mount:hover {
  transform: translateY(-1px);
}

.agent-chat-mount svg {
  width: 1.15rem;
  height: 1.15rem;
}

.agent-chat-mount span {
  font-size: 0.85rem;
  letter-spacing: 0.01em;
}

.agent-chat-sheet {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  display: grid;
  width: min(28rem, calc(100vw - 2rem));
  height: min(44rem, calc(100vh - 2rem));
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
  border: 1px solid var(--ink);
  border-radius: 1rem;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 1.5rem 5rem rgb(0 0 0 / 0.22);
  pointer-events: auto;
  animation: agent-chat-sheet-in 220ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.agent-chat-header {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding: 0.85rem 1rem;
}

.agent-chat-kicker {
  margin: 0 0 0.15rem;
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.agent-chat-header h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.025em;
}

.agent-chat-header-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.agent-chat-text-button,
.agent-chat-icon-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.agent-chat-text-button:hover,
.agent-chat-icon-button:hover {
  color: var(--ink);
}

.agent-chat-text-button {
  padding: 0.45rem;
  font-size: 0.75rem;
}

.agent-chat-icon-button {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  padding: 0;
}

.agent-chat-icon-button svg {
  width: 1.15rem;
  height: 1.15rem;
}

.agent-chat-messages {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1.15rem 1rem 2rem;
  scrollbar-color: var(--muted) transparent;
}

.agent-chat-empty {
  display: grid;
  min-height: 100%;
  align-content: center;
  justify-items: center;
  padding: 2rem;
  text-align: center;
}

.agent-chat-empty p {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.04em;
}

.agent-chat-empty span {
  max-width: 18rem;
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.agent-chat-message {
  width: fit-content;
  max-width: 88%;
  margin-top: 1rem;
  white-space: pre-wrap;
}

.agent-chat-message:first-child {
  margin-top: 0;
}

.agent-chat-message span {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.agent-chat-message-body {
  display: grid;
  gap: 0.65rem;
}

.agent-chat-message p,
.agent-chat-message ul,
.agent-chat-message ol {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 400;
  line-height: 1.55;
}

.agent-chat-message ul,
.agent-chat-message ol {
  padding-left: 1.2rem;
}

.agent-chat-message ul {
  list-style: disc outside;
}

.agent-chat-message ol {
  list-style: decimal outside;
}

.agent-chat-message li {
  padding-left: 0.15rem;
}

.agent-chat-message li + li {
  margin-top: 0.35rem;
}

.agent-chat-message li::marker {
  color: var(--muted);
  font-size: 0.8em;
}

.agent-chat-message-heading {
  font-weight: 700;
}

.agent-chat-message a {
  color: inherit;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.15em;
}

.agent-chat-source-link::after {
  content: " ↗";
  color: var(--muted);
  font-size: 0.72em;
  text-decoration: none;
}

.agent-chat-message-user {
  margin-left: auto;
  border-radius: 0.85rem 0.85rem 0.15rem 0.85rem;
  background: var(--ink);
  color: var(--paper);
  padding: 0.7rem 0.85rem;
}

.agent-chat-message-user span {
  color: color-mix(in srgb, var(--paper) 58%, transparent);
}

.agent-chat-user-content {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.agent-chat-turn-references {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
}

.agent-chat-turn-reference {
  width: 2rem;
  height: 2rem;
  border: 1px solid color-mix(in srgb, var(--paper) 30%, transparent);
  border-radius: 0.3rem;
  background: var(--paper);
  object-fit: contain;
}

.agent-chat-turn-reference + .agent-chat-turn-reference {
  margin-left: -0.4rem;
}

.agent-chat-message-assistant {
  border-left: 1px solid var(--ink);
  padding: 0.15rem 0 0.15rem 0.85rem;
}

.agent-chat-message-error {
  color: #b42318;
}

.agent-chat-thinking {
  display: flex;
  align-items: center;
  gap: 0.28rem;
  margin-top: 1rem;
  padding-left: 0.85rem;
}

.agent-chat-thinking > span:not(.sr-only) {
  width: 0.3rem;
  height: 0.3rem;
  border-radius: 50%;
  background: var(--muted);
  animation: agent-chat-thinking 1s ease-in-out infinite;
}

.agent-chat-thinking > span:nth-child(2) {
  animation-delay: 120ms;
}

.agent-chat-thinking > span:nth-child(3) {
  animation-delay: 240ms;
}

.agent-chat-composer {
  border-top: 1px solid var(--line);
  background: var(--paper);
  padding: 0.75rem;
}

.agent-chat-page-context {
  min-width: 0;
  margin: 0 0 0.55rem 0.1rem;
  color: var(--muted);
  font-size: 0.68rem;
}

.agent-chat-page-context-heading {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.4rem;
}

.agent-chat-page-context-heading svg {
  width: 0.85rem;
  height: 0.85rem;
  flex: 0 0 auto;
}

.agent-chat-page-context-heading span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.agent-chat-page-context-titles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-height: 6.5rem;
  gap: 0.15rem 0.75rem;
  margin: 0.4rem 0 0 1.25rem;
  overflow-y: auto;
  padding: 0;
  list-style: none;
  color: var(--ink);
  font-size: 0.6rem;
  line-height: 1.35;
}

.agent-chat-page-context-titles li {
  position: relative;
  overflow: hidden;
  padding-left: 0.55rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.agent-chat-page-context-titles li[data-hovered] {
  color: var(--ink);
  font-weight: 700;
}

.agent-chat-page-context-titles li::before {
  position: absolute;
  left: 0;
  color: var(--muted);
  content: "·";
}

.agent-chat-artwork {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.65rem;
  padding: 0.4rem;
  animation: agent-chat-reference-in 260ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.agent-chat-artwork-original {
  width: 3rem;
  height: 3rem;
  border-radius: 0.35rem;
  background: color-mix(in srgb, var(--ink) 5%, var(--paper));
  object-fit: contain;
}

.agent-chat-artwork-images {
  display: flex;
  min-width: 3rem;
  align-items: center;
  gap: 0.3rem;
}

.agent-chat-artwork-detail {
  position: relative;
  flex: 0 0 auto;
  overflow: hidden;
  border: 1px solid var(--ink);
  border-radius: 0.35rem;
  background: color-mix(in srgb, var(--ink) 8%, var(--paper));
}

.agent-chat-artwork-detail img {
  position: absolute;
  max-width: none;
  border-radius: 0;
  object-fit: fill;
}

.agent-chat-artwork-copy {
  min-width: 0;
}

.agent-chat-artwork strong,
.agent-chat-artwork span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.agent-chat-artwork .agent-chat-artwork-selection {
  color: var(--ink);
  font-size: 0.62rem;
}

.agent-chat-artwork strong {
  font-size: 0.78rem;
  font-weight: 400;
}

.agent-chat-artwork span {
  margin-top: 0.15rem;
  color: var(--muted);
  font-size: 0.68rem;
}

.agent-chat-artwork button {
  width: 2rem;
  height: 2rem;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 1.1rem;
  cursor: pointer;
}

.agent-chat-input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 0.5rem;
  border: 1px solid var(--ink);
  border-radius: 0.8rem;
  padding: 0.35rem;
}

.agent-chat-input-row textarea {
  width: 100%;
  max-height: 8rem;
  resize: none;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  padding: 0.55rem 0.45rem;
  font-size: 0.88rem;
  line-height: 1.4;
}

.agent-chat-input-row textarea::placeholder {
  color: var(--muted);
}

.agent-chat-send {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
}

.agent-chat-send:disabled {
  cursor: wait;
  opacity: 0.4;
}

.agent-chat-send svg {
  width: 1.1rem;
  height: 1.1rem;
}

.agent-chat-status {
  flex: 1;
  min-height: 1rem;
  margin: 0;
  text-align: right;
  color: var(--muted);
  font-size: 0.65rem;
  line-height: 1rem;
}

.agent-chat-composer-footer {
  display: flex;
  min-height: 1.75rem;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.1rem 0;
}

.agent-chat-tool-toggle {
  display: inline-flex;
  min-height: 1.6rem;
  align-items: center;
  gap: 0.3rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  padding: 0.18rem 0.5rem;
  font-size: 0.65rem;
  cursor: pointer;
}

.agent-chat-tool-toggle:hover {
  color: var(--ink);
}

.agent-chat-tool-toggle[aria-pressed="true"] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.agent-chat-tool-toggle svg {
  width: 0.8rem;
  height: 0.8rem;
}

.agent-chat-flight {
  position: fixed;
  z-index: 100;
  margin: 0;
  border-radius: 0.35rem;
  background: var(--paper);
  object-fit: contain;
  pointer-events: none;
}

@keyframes agent-chat-sheet-in {
  from { opacity: 0; transform: translateY(0.75rem) scale(0.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes agent-chat-reference-in {
  from { opacity: 0; transform: translateY(0.35rem); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes agent-chat-thinking {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-0.15rem); }
}

@media (max-width: 40rem) {
  .agent-chat-mount {
    right: 0.75rem;
    bottom: 0.75rem;
  }

  .agent-chat-sheet {
    right: 0.5rem;
    bottom: 0.5rem;
    width: calc(100vw - 1rem);
    height: calc(100dvh - 1rem);
    border-radius: 0.85rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .agent-chat-sheet,
  .agent-chat-artwork,
  .agent-chat-thinking > span:not(.sr-only) {
    animation: none;
  }
}