/* -------------------------------------------------------------------------- */
/*                                   Thread                                   */
/* -------------------------------------------------------------------------- */

.bn-ms-thread {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  flex: 1 1 auto;
  min-height: 0;
  background: var(--bn-ms-color-surface);
  overflow: visible;
  position: relative;
}

.bn-ms-thread__header {
  display: flex;
  align-items: center;
  gap: var(--bn-ms-spacing-sm);
  padding: var(--bn-ms-spacing-md);
  border-bottom: 1px solid var(--bn-ms-color-border);
  flex-shrink: 0;
  background: var(--bn-ms-color-surface);
  min-height: 64px;
  position: relative;
  z-index: 2;
}

.bn-ms-thread__back-btn {
  appearance: none;
  border: none;
  background: none;
  cursor: pointer;
  padding: var(--bn-ms-spacing-xs);
  font-size: 1.5rem;
  color: var(--bn-ms-color-text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  transition: background var(--bn-ms-transition-base), color var(--bn-ms-transition-base), transform var(--bn-ms-transition-base);
}

.bn-ms-thread__back-btn:hover,
.bn-ms-thread__back-btn:focus-visible {
  outline: none;
  background: var(--bn-ms-color-primary-soft);
  color: var(--bn-ms-color-text);
}

.bn-ms-thread__back-btn:active {
  transform: scale(0.96);
}

.bn-ms-thread__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bn-ms-color-primary) 0%, var(--bn-ms-color-primary-strong) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.25rem;
  flex-shrink: 0;
  box-shadow: var(--bn-ms-shadow-xs);
}

.bn-ms-thread__info {
  flex: 1 1 auto;
  overflow: hidden;
  min-width: 0; /* ensure name/status can ellipsize instead of overflowing */
}

.bn-ms-thread__name {
  font-weight: var(--bn-ms-font-weight-medium);
  font-size: var(--bn-ms-font-size-md);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--bn-ms-color-text);
}

.bn-ms-thread__status {
  font-size: var(--bn-ms-font-size-xs);
  color: var(--bn-ms-color-text-soft);
  margin-top: 2px;
}

.bn-ms-thread__actions {
  display: flex;
  gap: var(--bn-ms-spacing-2xs);
}

.bn-ms-thread__actions .bn-ms-icon-btn {
  color: var(--bn-ms-color-text-muted);
}

.bn-ms-thread__messages {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: var(--bn-ms-spacing-sm);
  padding: var(--bn-ms-spacing-lg) var(--bn-ms-spacing-md) var(--bn-ms-spacing-md);
  background: linear-gradient(180deg, var(--bn-ms-color-bg) 0%, var(--bn-ms-color-surface) 38%);
  /* Enable smooth scrolling on mobile */
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
  /* Ensure scrolling works */
  min-height: 0;
  /* Container query for responsive height */
  container-type: size;
}

/* Floating "back to live" button when user scrolled up */
.bn-ms-thread__scroll-btn {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bn-ms-color-primary);
  color: #fff;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--bn-ms-shadow-md);
  cursor: pointer;
  z-index: 3;
  opacity: 0.95;
  transition: transform var(--bn-ms-transition-base), box-shadow var(--bn-ms-transition-base), opacity var(--bn-ms-transition-base);
}

.bn-ms-thread__scroll-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--bn-ms-shadow-lg);
}

.bn-ms-thread__scroll-btn[hidden] { display: none; }

.bn-ms-message {
  display: flex;
  align-items: flex-end;
  gap: var(--bn-ms-spacing-sm);
  max-width: 82%;
  position: relative;
}

.bn-ms-message__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bn-ms-color-primary) 0%, var(--bn-ms-color-primary-strong) 100%);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: var(--bn-ms-font-size-sm);
  box-shadow: var(--bn-ms-shadow-xs);
}

.bn-ms-message__content {
  display: flex;
  flex-direction: column;
  gap: var(--bn-ms-spacing-2xs);
}

.bn-ms-message__actions {
  display: inline-flex;
  gap: 0.25rem;
  margin-top: 2px;
  align-self: flex-end;
  opacity: 0.85;
}

.bn-ms-icon-btn {
  appearance: none;
  border: none;
  background: transparent;
  padding: 2px 6px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--bn-ms-color-text-soft);
}

.bn-ms-icon-btn:hover {
  background: var(--bn-ms-color-primary-soft);
  color: var(--bn-ms-color-text);
}

.bn-ms-message__bubble {
  padding: 0.65rem 0.95rem;
  border-radius: var(--bn-ms-radius-lg);
  background: var(--bn-ms-color-bg);
  border: 1px solid var(--bn-ms-color-border);
  font-size: var(--bn-ms-font-size-sm);
  line-height: 1.45;
  word-break: break-word;
  box-shadow: var(--bn-ms-shadow-xs);
}

.bn-ms-message__meta {
  font-size: var(--bn-ms-font-size-xs);
  color: var(--bn-ms-color-text-soft);
  padding: 0 var(--bn-ms-spacing-sm);
}

/* --- Message from self --- */
.bn-ms-message--self {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.bn-ms-message--self .bn-ms-message__avatar {
  display: none;
}

.bn-ms-message--self .bn-ms-message__bubble {
  background: var(--bn-ms-color-primary);
  color: #fff;
  border-color: var(--bn-ms-color-primary);
  box-shadow: none;
}

.bn-ms-message--self .bn-ms-message__meta {
  text-align: right;
}

/* --- Bubble corners --- */
.bn-ms-message:not(.bn-ms-message--self) .bn-ms-message__bubble {
  border-bottom-left-radius: var(--bn-ms-radius-sm);
}

.bn-ms-message--self .bn-ms-message__bubble {
  border-bottom-right-radius: var(--bn-ms-radius-sm);
}

.bn-ms-thread__empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--bn-ms-color-text-muted);
  padding: var(--bn-ms-spacing-lg);
}

.bn-ms-thread__empty .bn-ms-icon {
  font-size: 3.5rem;
  margin-bottom: var(--bn-ms-spacing-md);
  color: var(--bn-ms-color-primary);
  opacity: 0.25;
}

.bn-ms-thread__empty p {
  font-size: var(--bn-ms-font-size-sm);
  max-width: 35ch;
  color: var(--bn-ms-color-text-soft);
}

.bn-ms-thread__empty h3 {
  font-size: var(--bn-ms-font-size-lg);
  font-weight: var(--bn-ms-font-weight-medium);
  margin-bottom: var(--bn-ms-spacing-xs);
  color: var(--bn-ms-color-text-muted);
}

/* --- Typing Indicator --- */
.bn-ms-thread__typing {
  display: flex;
  align-items: center;
  gap: var(--bn-ms-spacing-xs);
  padding: var(--bn-ms-spacing-sm) var(--bn-ms-spacing-md);
  flex-shrink: 0;
  font-size: var(--bn-ms-font-size-xs);
  color: var(--bn-ms-color-text-soft);
  background: var(--bn-ms-color-surface);
  border-top: 1px solid var(--bn-ms-color-border);
}

.bn-ms-thread__typing[hidden] {
  display: none;
}

.bn-ms-thread__typing-dots {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.bn-ms-thread__typing-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--bn-ms-color-text-soft);
  animation: bn-ms-typing-bounce 1.4s infinite ease-in-out both;
}

.bn-ms-thread__typing-dot:nth-child(1) {
  animation-delay: -0.32s;
}

.bn-ms-thread__typing-dot:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes bn-ms-typing-bounce {
  0%, 80%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* --- Thread Menu --- */
.bn-ms-thread__menu {
  position: absolute;
  top: 100%;
  right: var(--bn-ms-spacing-md);
  background: var(--bn-ms-color-surface);
  border: 1px solid var(--bn-ms-color-border);
  border-radius: var(--bn-ms-radius-lg);
  box-shadow: var(--bn-ms-shadow-md);
  min-width: 220px;
  padding: var(--bn-ms-spacing-xs);
  z-index: 50;
  margin-top: var(--bn-ms-spacing-xs);
}

.bn-ms-thread__menu[aria-hidden="true"] {
  display: none;
}

.bn-ms-thread__menu-item {
  appearance: none;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  padding: var(--bn-ms-spacing-sm) var(--bn-ms-spacing-md);
  border-radius: var(--bn-ms-radius-sm);
  font-size: var(--bn-ms-font-size-sm);
  color: var(--bn-ms-color-text);
  cursor: pointer;
  transition: background var(--bn-ms-transition-base);
  display: flex;
  align-items: center;
  gap: var(--bn-ms-spacing-sm);
}

.bn-ms-thread__menu-item:hover {
  background: var(--bn-ms-color-primary-soft);
}

.bn-ms-thread__menu-item--danger {
  color: var(--bn-ms-color-danger);
}

.bn-ms-thread__menu-item--danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

.bn-ms-thread__menu-separator {
  border: none;
  border-top: 1px solid var(--bn-ms-color-border);
  margin: var(--bn-ms-spacing-xs) 0;
}

/* Link style inside message bubbles */
.bn-ms-message__bubble .bn-ms-link {
  color: var(--bn-ms-color-primary);
  text-decoration: underline;
}
.bn-ms-message__bubble .bn-ms-link:hover {
  filter: brightness(0.9);
}