/* QSDsan docs chatbot widget. Uses Furo CSS variables so it follows light/dark.
   Anchored bottom-LEFT to stay clear of the readthedocs version flyout (bottom-right). */
.qsd-chat-button {
  position: fixed;
  left: 1.25rem;
  bottom: 1.25rem;
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.05rem;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  background: var(--color-brand-primary, #2b8a3e);
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.28);
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
}
.qsd-chat-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.34);
  filter: brightness(1.05);
}
.qsd-chat-button svg {
  flex: none;
}
.qsd-btn-label {
  white-space: nowrap;
}

.qsd-chat-panel {
  position: fixed;
  left: 1.25rem;
  bottom: 5rem;
  z-index: 1000;
  width: min(400px, 92vw);
  height: min(560px, 72vh);
  display: flex;
  flex-direction: column;
  border-radius: 14px;
  overflow: hidden;
  background: var(--color-background-primary, #fff);
  color: var(--color-foreground-primary, #1a1a1a);
  border: 1px solid var(--color-background-border, #d0d0d0);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.32);
}
.qsd-hidden {
  display: none;
}

.qsd-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.7rem 0.9rem;
  font-weight: 600;
  color: #fff;
  background: var(--color-brand-primary, #2b8a3e);
}
.qsd-head-title {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.qsd-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.85;
}
.qsd-close:hover {
  opacity: 1;
}

.qsd-chat-log {
  flex: 1;
  overflow-y: auto;
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  background: var(--color-background-primary, #fff);
}

.qsd-msg {
  position: relative;
  max-width: 100%;
}
.qsd-msg-body {
  line-height: 1.5;
  font-size: 0.92rem;
  overflow-wrap: anywhere;
}
.qsd-user {
  align-self: flex-end;
  max-width: 85%;
}
.qsd-user .qsd-msg-body {
  display: inline-block;
  background: var(--color-brand-primary, #2b8a3e);
  color: #fff;
  padding: 0.5rem 0.7rem;
  border-radius: 12px 12px 2px 12px;
}
.qsd-bot {
  align-self: flex-start;
  max-width: 92%;
}
.qsd-bot .qsd-msg-body {
  background: var(--color-background-secondary, #f3f3f3);
  padding: 0.6rem 0.75rem;
  border-radius: 12px 12px 12px 2px;
}
.qsd-intro .qsd-msg-body {
  background: transparent;
  padding: 0.1rem 0;
  opacity: 0.85;
  font-size: 0.88rem;
}

.qsd-msg-body p {
  margin: 0 0 0.5rem;
}
.qsd-msg-body p:last-child {
  margin-bottom: 0;
}
.qsd-msg-body h1,
.qsd-msg-body h2,
.qsd-msg-body h3,
.qsd-h {
  margin: 0.6rem 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
}
.qsd-msg-body ul,
.qsd-msg-body ol {
  margin: 0.3rem 0 0.5rem;
  padding-left: 1.25rem;
}
.qsd-msg-body li {
  margin: 0.15rem 0;
}
.qsd-msg-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85em;
  background: var(--color-code-background, rgba(0, 0, 0, 0.06));
  padding: 0.1em 0.35em;
  border-radius: 5px;
}
.qsd-msg-body pre {
  background: var(--color-code-background, #f5f5f5);
  padding: 0.7rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 0.4rem 0;
}
.qsd-msg-body pre code {
  background: none;
  padding: 0;
  font-size: 0.82rem;
}
.qsd-msg-body a {
  color: var(--color-brand-content, #2b8a3e);
  text-decoration: underline;
}

.qsd-cite-label {
  margin-top: 0.55rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.6;
  font-weight: 700;
}
.qsd-citations {
  margin: 0.2rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.82rem;
}
.qsd-citations li {
  margin: 0.1rem 0;
}
.qsd-src {
  opacity: 0.65;
}

.qsd-copy {
  margin-top: 0.35rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: none;
  border: 1px solid var(--color-background-border, #ccc);
  color: var(--color-foreground-secondary, #666);
  border-radius: 7px;
  padding: 0.2rem 0.5rem;
  font: inherit;
  font-size: 0.75rem;
  cursor: pointer;
}
.qsd-copy:hover {
  color: var(--color-foreground-primary, #111);
  border-color: var(--color-foreground-muted, #999);
}

.qsd-typing {
  opacity: 0.7;
  font-style: italic;
}
.qsd-error {
  color: #c0392b;
}

.qsd-chat-form {
  display: flex;
  gap: 0.4rem;
  padding: 0.6rem;
  border-top: 1px solid var(--color-background-border, #e0e0e0);
  background: var(--color-background-primary, #fff);
}
.qsd-chat-input {
  flex: 1;
  padding: 0.5rem 0.6rem;
  border-radius: 9px;
  border: 1px solid var(--color-background-border, #ccc);
  background: var(--color-background-primary, #fff);
  color: inherit;
  font: inherit;
  font-size: 0.9rem;
}
.qsd-chat-input:focus {
  outline: 2px solid var(--color-brand-primary, #2b8a3e);
  outline-offset: -1px;
}
.qsd-chat-form button[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.7rem;
  border: none;
  border-radius: 9px;
  cursor: pointer;
  background: var(--color-brand-primary, #2b8a3e);
  color: #fff;
}
.qsd-chat-form button[type="submit"]:hover {
  filter: brightness(1.06);
}