.ru4m-assistant {
  position: fixed;
  right: var(--site-space-5);
  bottom: var(--site-space-5);
  z-index: 5;
  font-family: var(--site-font-body);
  font-size: var(--site-text-sm);
  line-height: var(--site-leading-snug);
}

.ru4m-assistant svg {
  width: 1.15em;
  height: 1.15em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ru4m-assistant button {
  font: inherit;
  cursor: pointer;
}

.ru4m-assistant button:focus-visible,
.ru4m-assistant a:focus-visible,
.ru4m-assistant__input:focus-visible {
  outline: 2px solid var(--site-accent);
  outline-offset: 2px;
}

.ru4m-assistant__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--site-space-2);
  padding: var(--site-space-3) var(--site-space-5);
  border: 0;
  border-radius: 999px;
  background: var(--site-accent);
  color: var(--site-bg-canvas);
  font-weight: var(--site-fw-semibold);
  box-shadow: var(--site-shadow-lg);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.ru4m-assistant__toggle:hover {
  transform: translateY(-2px);
}

.ru4m-assistant__panel {
  display: flex;
  flex-direction: column;
  width: min(25rem, calc(100vw - 2 * var(--site-space-5)));
  height: min(40rem, calc(100vh - 2 * var(--site-space-8)));
  border: var(--site-stroke-hair) solid var(--site-border-subtle);
  border-radius: var(--site-radius-lg);
  background: var(--site-surface);
  color: var(--site-text-primary);
  box-shadow: var(--site-shadow-lg);
  overflow: hidden;
  animation: ru4m-assistant-in 0.18s ease-out;
}

.ru4m-assistant__panel[hidden],
.ru4m-assistant__toggle[hidden] {
  display: none;
}

@keyframes ru4m-assistant-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
}

.ru4m-assistant__header {
  display: flex;
  align-items: center;
  gap: var(--site-space-3);
  padding: var(--site-space-3) var(--site-space-3) var(--site-space-3) var(--site-space-4);
  border-bottom: var(--site-stroke-hair) solid var(--site-border-subtle);
}

.ru4m-assistant__avatar {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--site-accent);
  color: var(--site-bg-canvas);
}

.ru4m-assistant__heading {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-width: 0;
}

.ru4m-assistant__heading strong {
  font-size: var(--site-text-base);
}

.ru4m-assistant__heading span {
  color: var(--site-text-muted);
  font-size: var(--site-text-2xs);
}

.ru4m-assistant__actions {
  display: flex;
  gap: var(--site-space-2);
}

.ru4m-assistant__icon {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 0;
  border-radius: var(--site-radius-md);
  background: none;
  color: var(--site-text-secondary);
}

.ru4m-assistant__icon:hover {
  background: var(--site-surface-hover);
  color: var(--site-text-primary);
}

.ru4m-assistant__log {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: var(--site-space-3);
  padding: var(--site-space-4);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.ru4m-assistant__msg {
  max-width: 90%;
  padding: var(--site-space-3) var(--site-space-4);
  border-radius: var(--site-radius-lg);
  overflow-wrap: anywhere;
}

.ru4m-assistant__msg p,
.ru4m-assistant__msg ul,
.ru4m-assistant__msg ol {
  margin: 0 0 var(--site-space-2);
}

.ru4m-assistant__msg > :last-child {
  margin-bottom: 0;
}

.ru4m-assistant__msg ul,
.ru4m-assistant__msg ol {
  padding-left: var(--site-space-5);
}

.ru4m-assistant__msg li + li {
  margin-top: 0.15em;
}

.ru4m-assistant__msg a {
  color: var(--site-text-link);
  text-underline-offset: 2px;
}

.ru4m-assistant__msg code {
  padding: 0.1em 0.35em;
  border-radius: var(--site-radius-xs);
  background: var(--site-surface-hover);
  font-size: 0.9em;
}

.ru4m-assistant__msg--user {
  align-self: flex-end;
  border-bottom-right-radius: var(--site-radius-xs);
  background: var(--site-accent);
  color: var(--site-bg-canvas);
  white-space: pre-wrap;
}

.ru4m-assistant__msg--bot {
  align-self: flex-start;
  border-bottom-left-radius: var(--site-radius-xs);
  background: var(--site-surface-sunken);
}

.ru4m-assistant__msg--note {
  align-self: center;
  padding: var(--site-space-2) var(--site-space-3);
  color: var(--site-text-muted);
  font-size: var(--site-text-2xs);
}

.ru4m-assistant__msg--error {
  align-self: flex-start;
  border: var(--site-stroke-hair) solid var(--site-border-subtle);
  background: none;
  color: var(--site-text-secondary);
}

.ru4m-assistant__typing {
  display: inline-flex;
  gap: 4px;
  padding: 4px 0;
}

.ru4m-assistant__typing i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--site-text-muted);
  animation: ru4m-assistant-dot 1.2s infinite ease-in-out;
}

.ru4m-assistant__typing i:nth-child(2) {
  animation-delay: 0.15s;
}

.ru4m-assistant__typing i:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes ru4m-assistant-dot {
  0%,
  80%,
  100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  40% {
    opacity: 1;
    transform: translateY(-3px);
  }
}

.ru4m-assistant__sources {
  display: flex;
  flex-wrap: wrap;
  gap: var(--site-space-2);
  margin-top: var(--site-space-3);
  padding-top: var(--site-space-3);
  border-top: var(--site-stroke-hair) solid var(--site-border-subtle);
}

.ru4m-assistant__sources-label {
  width: 100%;
  color: var(--site-text-muted);
  font-size: var(--site-text-2xs);
  font-weight: var(--site-fw-semibold);
  letter-spacing: var(--site-tracking-widest);
  text-transform: uppercase;
}

.ru4m-assistant .ru4m-assistant__source {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  max-width: 100%;
  padding: 0.35em 0.7em;
  border: var(--site-stroke-hair) solid var(--site-border-subtle);
  border-radius: 999px;
  background: var(--site-surface);
  color: var(--site-text-primary);
  font-size: var(--site-text-2xs);
  text-decoration: none;
}

.ru4m-assistant__source span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ru4m-assistant .ru4m-assistant__source:hover {
  border-color: var(--site-accent);
  color: var(--site-text-link);
}

.ru4m-assistant__suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--site-space-2);
}

.ru4m-assistant__chip {
  padding: 0.45em 0.85em;
  border: var(--site-stroke-hair) solid var(--site-border-subtle);
  border-radius: 999px;
  background: var(--site-surface);
  color: var(--site-text-secondary);
  font-size: var(--site-text-2xs);
}

.ru4m-assistant__chip:hover {
  border-color: var(--site-accent);
  color: var(--site-text-primary);
}

.ru4m-assistant__form {
  padding: var(--site-space-3) var(--site-space-3) var(--site-space-2);
  border-top: var(--site-stroke-hair) solid var(--site-border-subtle);
}

.ru4m-assistant__field {
  display: flex;
  align-items: flex-end;
  gap: var(--site-space-2);
  padding: var(--site-space-2);
  border: var(--site-stroke-hair) solid var(--site-border-subtle);
  border-radius: var(--site-radius-lg);
  background: var(--site-bg-canvas);
}

.ru4m-assistant__field:focus-within {
  border-color: var(--site-accent);
}

.ru4m-assistant__input {
  flex: 1;
  max-height: 140px;
  padding: var(--site-space-2);
  border: 0;
  background: none;
  color: var(--site-text-primary);
  font: inherit;
  resize: none;
}

.ru4m-assistant__input:focus-visible {
  outline: none;
}

.ru4m-assistant__send {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 0;
  border-radius: 50%;
  background: var(--site-accent);
  color: var(--site-bg-canvas);
}

.ru4m-assistant__send:disabled {
  opacity: 0.5;
  cursor: progress;
}

.ru4m-assistant__hint {
  margin: var(--site-space-2) 0 0;
  color: var(--site-text-muted);
  font-size: var(--site-text-2xs);
  text-align: center;
}

@media (max-width: 40em) {
  .ru4m-assistant-open .ru4m-assistant {
    inset: 0;
  }

  .ru4m-assistant-open .ru4m-assistant__panel {
    width: 100vw;
    height: 100dvh;
    border: 0;
    border-radius: 0;
  }

  .ru4m-assistant__hint {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ru4m-assistant__panel,
  .ru4m-assistant__typing i,
  .ru4m-assistant__toggle {
    animation: none;
    transition: none;
  }
}

@media print {
  .ru4m-assistant {
    display: none;
  }
}