/* ==========================================================================
   chatbot.css — styling for the docs chat widget.
   Uses MkDocs Material's CSS variables so it follows the indigo theme and the
   light/dark toggle automatically, with no duplicated colour values.
   ========================================================================== */

.dc-launcher {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  border: none;
  border-radius: 999px;
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.22);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.dc-launcher:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.28);
}
.dc-launcher::before { content: "💬"; font-size: 0.95rem; }

/* The [hidden] attribute only implies display:none, which ANY explicit display
   rule overrides. .dc-panel sets display:flex and .dc-launcher sets display:flex,
   so `el.hidden = true` had no visible effect — the close button fired and the
   panel stayed open. This makes hidden actually hide. */
[hidden] { display: none !important; }

.dc-panel {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 21;
  display: flex;
  flex-direction: column;
  width: 400px;
  max-width: calc(100vw - 2rem);
  height: 560px;
  max-height: calc(100vh - 3rem);
  border-radius: 14px;
  overflow: hidden;
  background: var(--md-default-bg-color);
  border: 1px solid var(--md-default-fg-color--lightest);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.dc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color);
}
.dc-title { font-size: 0.85rem; font-weight: 700; }
.dc-sub { font-size: 0.68rem; opacity: 0.85; margin-top: 2px; }
.dc-close {
  background: none;
  border: none;
  color: inherit;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.85;
  padding: 0 0.25rem;
}
.dc-close:hover { opacity: 1; }

.dc-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.dc-msg { display: flex; flex-direction: column; max-width: 92%; }
.dc-msg--user { align-self: flex-end; align-items: flex-end; }
.dc-msg--bot { align-self: flex-start; }

.dc-bubble {
  padding: 0.65rem 0.85rem;
  border-radius: 12px;
  font-size: 0.76rem;
  line-height: 1.55;
  word-wrap: break-word;
}
.dc-msg--user .dc-bubble {
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color);
  border-bottom-right-radius: 4px;
}
.dc-msg--bot .dc-bubble {
  background: var(--md-code-bg-color);
  color: var(--md-default-fg-color);
  border-bottom-left-radius: 4px;
}

.dc-bubble code {
  font-size: 0.72rem;
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  background: var(--md-default-fg-color--lightest);
}
.dc-bubble pre {
  margin: 0.5rem 0;
  padding: 0.6rem;
  border-radius: 6px;
  overflow-x: auto;                    /* long code must scroll, not stretch */
  background: var(--md-default-fg-color--lightest);
}
.dc-bubble pre code { background: none; padding: 0; }

/* --- Citations ---------------------------------------------------------- */
.dc-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  align-items: center;
  margin-top: 0.45rem;
  padding-left: 0.15rem;
}
.dc-sources__label {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
  opacity: 0.55;
  margin-right: 0.15rem;
}
.dc-source {
  font-size: 0.64rem;
  padding: 0.18rem 0.45rem;
  border-radius: 999px;
  text-decoration: none;
  background: var(--md-accent-fg-color--transparent);
  color: var(--md-accent-fg-color);
  border: 1px solid var(--md-accent-fg-color--transparent);
}
.dc-source:hover {
  border-color: var(--md-accent-fg-color);
  text-decoration: none;
}

.dc-error { color: var(--md-typeset-del-color, #d32f2f); font-weight: 500; }

/* --- Typing indicator --------------------------------------------------- */
.dc-dots { display: inline-flex; gap: 3px; padding: 0.15rem 0; }
.dc-dots i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--md-default-fg-color--light);
  animation: dc-blink 1.3s infinite both;
}
.dc-dots i:nth-child(2) { animation-delay: 0.18s; }
.dc-dots i:nth-child(3) { animation-delay: 0.36s; }
@keyframes dc-blink {
  0%, 80%, 100% { opacity: 0.25; }
  40% { opacity: 1; }
}

/* Respect users who ask for less motion. */
@media (prefers-reduced-motion: reduce) {
  .dc-dots i { animation: none; opacity: 0.6; }
  .dc-launcher { transition: none; }
}

/* --- Input -------------------------------------------------------------- */
.dc-form {
  display: flex;
  gap: 0.5rem;
  padding: 0.7rem;
  border-top: 1px solid var(--md-default-fg-color--lightest);
}
.dc-input {
  flex: 1;
  padding: 0.5rem 0.7rem;
  font-size: 0.76rem;
  font-family: inherit;
  color: var(--md-default-fg-color);
  background: var(--md-default-bg-color);
  border: 1px solid var(--md-default-fg-color--lighter);
  border-radius: 8px;
}
.dc-input:focus {
  outline: none;
  border-color: var(--md-accent-fg-color);
}
.dc-input:disabled { opacity: 0.55; }
.dc-send {
  padding: 0.5rem 0.9rem;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--md-primary-bg-color);
  background: var(--md-primary-fg-color);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}
.dc-send:disabled { opacity: 0.5; cursor: default; }

/* --- Small screens ------------------------------------------------------ */
@media screen and (max-width: 480px) {
  .dc-panel {
    right: 0;
    bottom: 0;
    width: 100vw;
    max-width: 100vw;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
  }
}