.shopping-help {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 4;
  background: var(--ink);
  color: var(--paper);
  border-radius: 28px;
  min-height: 48px;
  padding: 12px 20px;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.shopping-help span {
  font-size: 20px;
}
#shopping-assistant {
  width: 460px;
  max-width: calc(100vw - 24px);
  max-height: calc(100svh - 24px);
}
.assistant-note {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.6;
}
#assistant-log {
  max-height: 40svh;
  overflow-y: auto;
  overscroll-behavior: contain;
  margin: 20px 0;
  padding-right: 5px;
}
.assistant-message {
  font-size: 13px;
  line-height: 1.7;
  padding: 15px 0;
  border-top: 1px solid var(--line);
}
.assistant-message strong {
  display: block;
  font-size: 10px;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.assistant-message p {
  margin: 0 0 10px;
  white-space: pre-line;
}
.assistant-message.user {
  color: var(--muted);
}
.assistant-product {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  margin: 15px 0;
}
.assistant-product img {
  width: 48px;
  height: 60px;
  object-fit: cover;
}
.assistant-product a {
  display: block;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.assistant-product small {
  display: block;
}
.assistant-product button {
  min-height: 44px;
  font-size: 11px;
  text-decoration: underline;
}
.assistant-prompts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.assistant-prompts button {
  border: 1px solid var(--line);
  border-radius: 24px;
  min-height: 44px;
  padding: 10px;
  font-size: 10px;
}
#assistant-form {
  margin-top: 20px;
}
#assistant-form label {
  font-size: 11px;
}
#assistant-form > div {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
#assistant-input {
  min-width: 0;
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  padding: 10px;
}
#assistant-form button {
  min-width: 60px;
  font-size: 12px;
}
#assistant-clear {
  font-size: 11px;
  text-decoration: underline;
  min-height: 44px;
  margin-top: 10px;
}
@media (max-width: 650px) {
  .shopping-help {
    bottom: 12px;
    right: 12px;
    padding: 10px 16px;
  }
  #shopping-assistant {
    padding: 20px;
  }
}
/* Clear conversation hierarchy, with a stable composer and scrollable history. */
#shopping-assistant[open] {
  display: flex;
  flex-direction: column;
  width: 520px;
  height: min(760px, calc(100svh - 24px));
  padding: 24px;
  overflow: hidden;
}
#shopping-assistant .dialog-head {
  flex: none;
}
#shopping-assistant h2 {
  font-size: 25px;
  letter-spacing: -0.7px;
}
.assistant-note {
  margin: 0;
  padding: 10px 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  flex: none;
}
#assistant-log {
  flex: 1;
  min-height: 70px;
  max-height: none;
  margin: 16px 0;
  padding: 0 8px 0 0;
}
.assistant-message {
  background: #f0eee7;
  border: 0;
  border-radius: 2px 14px 14px 14px;
  padding: 16px;
  margin: 0 22px 14px 0;
  color: var(--ink);
}
.assistant-message.user {
  background: var(--ink);
  color: var(--paper);
  margin: 0 0 14px 38px;
  border-radius: 14px 2px 14px 14px;
}
.assistant-message strong {
  letter-spacing: 0.04em;
  font-size: 11px;
}
.assistant-message p:last-child {
  margin-bottom: 0;
}
.assistant-product {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 12px;
  grid-template-columns: 64px 1fr;
  gap: 14px;
  margin: 12px 0 0;
}
.assistant-product img {
  width: 64px;
  height: 80px;
  object-fit: cover;
}
.assistant-product a {
  font-weight: 600;
  text-decoration: none;
  line-height: 1.4;
}
.assistant-product small {
  margin-top: 6px;
  font-size: 12px;
}
.assistant-product button {
  font-size: 12px;
  font-weight: 600;
}
.assistant-prompts {
  flex: none;
}
.assistant-prompts button {
  font-size: 11px;
  background: var(--paper);
  padding: 8px 12px;
}
#assistant-form {
  margin-top: 14px;
  flex: none;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}
#assistant-form label {
  font-size: 12px;
}
#assistant-form button {
  background: var(--ink);
  color: var(--paper);
  padding: 10px 15px;
}
#assistant-clear {
  margin: 0;
  align-self: flex-start;
  flex: none;
}
#shopping-assistant :focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
@media (max-width: 650px) {
  #shopping-assistant[open] {
    padding: 16px;
  }
  .assistant-message {
    margin-right: 8px;
    padding: 12px;
  }
  .assistant-message.user {
    margin-left: 26px;
  }
  #shopping-assistant h2 {
    font-size: 22px;
  }
  .assistant-note {
    font-size: 10px;
  }
  .assistant-prompts {
    gap: 5px;
  }
  .assistant-prompts button {
    font-size: 10px;
    padding: 6px 10px;
  }
}