.chat-window {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--surface-variant);
  overflow: hidden;
  min-width: 0;
  min-height: 0;
  height: 100%;
}

.chat-window.empty {
  align-items: center;
  justify-content: center;
}

.empty-state {
  text-align: center;
  color: var(--text-secondary);
}

.empty-icon {
  margin-bottom: 16px;
  opacity: 0.3;
}

.empty-state h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.empty-state p { font-size: 14px; }

/* Header */
.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: white;
  border-bottom: 1px solid var(--border);
  min-height: 64px;
  position: relative;
  z-index: 10;
}

.group-icon-sm {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.chat-header-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.chat-header-sub {
  font-size: 12px;
  color: var(--text-secondary);
}

/* Real name in brackets in DM header */
.chat-header-real-name {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-tertiary);
}

.readonly-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: #fff3e0;
  color: #e65100;
  font-weight: 500;
}

/* Messages */
.messages-container {
  flex: 1;
  min-height: 0;         /* critical: allows flex child to shrink below content size */
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  scroll-padding-bottom: 0;
  overscroll-behavior: contain;
  align-items: stretch;
}

/* Cap message width and centre on wide screens */
.messages-container > * {
  max-width: 1024px;
  width: 100%;
  align-self: center;
  box-sizing: border-box;
}

.load-more-btn {
  align-self: center;
  font-size: 13px;
  color: var(--primary);
  padding: 8px 16px;
  border-radius: 20px;
  background: var(--primary-light);
  margin-bottom: 8px;
  transition: var(--transition);
}
.load-more-btn:hover { background: #d2e3fc; }

/* Typing indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

.dots {
  display: flex;
  gap: 3px;
}

.dots span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-tertiary);
  animation: bounce 1.2s infinite;
}
.dots span:nth-child(2) { animation-delay: 0.2s; }
.dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-5px); }
}

/* Readonly bar */
.readonly-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  background: white;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-secondary);
}