.messages-panel {
  position: fixed;
  bottom: 4.75rem;
  left: 0.75rem;
  width: min(360px, calc(100vw - 1.5rem));
  height: min(420px, calc(100vh - var(--header-height, 4rem) - 6rem));
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  z-index: 160;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.98);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  overflow: hidden;
}

.messages-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.messages-panel-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 0.9rem;
  border-bottom: 1px solid #eee;
  background: #fff;
  flex-shrink: 0;
}

.messages-panel-header h2 {
  flex: 1;
  font-size: 1rem;
  font-weight: 700;
  color: #1c1e21;
  margin: 0;
}

.messages-back-btn,
.messages-close-btn {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: #f0f2f5;
  color: #65676b;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
}

.messages-back-btn[hidden],
.messages-close-btn[hidden] {
  display: none;
}

.messages-back-btn:hover,
.messages-close-btn:hover {
  background: #e4e6eb;
}

.messages-view {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.messages-view[hidden] {
  display: none !important;
}

.messages-new-btn {
  margin: 0.65rem 0.75rem 0;
  border: none;
  border-radius: 8px;
  padding: 0.55rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  background: #1877f2;
  color: #fff;
  flex-shrink: 0;
}

.messages-new-btn:hover {
  background: #166fe5;
}

.messages-list,
.messages-user-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem 0;
}

.messages-empty {
  padding: 2rem 1rem;
  text-align: center;
  color: #65676b;
  font-size: 0.9rem;
}

.messages-conversation-btn,
.messages-user-btn {
  width: 100%;
  border: none;
  background: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.85rem;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
}

.messages-conversation-btn:hover,
.messages-user-btn:hover {
  background: #f0f2f5;
}

.messages-conversation-btn.unread .messages-conversation-preview,
.messages-conversation-btn.unread .messages-conversation-name {
  font-weight: 700;
}

.messages-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea, #764ba2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  overflow: hidden;
  flex-shrink: 0;
}

.messages-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.messages-conversation-body,
.messages-user-body {
  flex: 1;
  min-width: 0;
}

.messages-conversation-top,
.messages-user-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.messages-conversation-name,
.messages-user-name {
  font-size: 0.92rem;
  font-weight: 600;
  color: #1c1e21;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.messages-conversation-time {
  font-size: 0.75rem;
  color: #65676b;
  flex-shrink: 0;
}

.messages-conversation-preview {
  margin-top: 0.15rem;
  font-size: 0.82rem;
  color: #65676b;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.messages-unread-badge {
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: #1877f2;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.messages-thread {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  background: #f0f2f5;
}

.messages-bubble {
  max-width: 82%;
  padding: 0.55rem 0.75rem;
  border-radius: 16px;
  font-size: 0.9rem;
  line-height: 1.4;
  word-break: break-word;
  white-space: pre-wrap;
}

.messages-bubble--sent {
  align-self: flex-end;
  background: #1877f2;
  color: #fff;
  border-bottom-right-radius: 4px;
}

.messages-bubble--received {
  align-self: flex-start;
  background: #fff;
  color: #1c1e21;
  border-bottom-left-radius: 4px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.messages-bubble-time {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.68rem;
  opacity: 0.75;
}

.messages-compose {
  display: flex;
  gap: 0.45rem;
  padding: 0.65rem 0.75rem;
  border-top: 1px solid #eee;
  background: #fff;
  flex-shrink: 0;
}

.messages-compose input {
  flex: 1;
  border: 1px solid #dddfe2;
  border-radius: 999px;
  padding: 0.55rem 0.85rem;
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
}

.messages-compose input:focus {
  border-color: #1877f2;
  box-shadow: 0 0 0 2px rgba(24, 119, 242, 0.15);
}

.messages-compose button {
  border: none;
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  background: #1877f2;
  color: #fff;
  flex-shrink: 0;
}

.messages-compose button:hover {
  background: #166fe5;
}

#globalMessagesBtn.has-unread::after {
  content: '';
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e41e3f;
  border: 2px solid rgba(11, 18, 32, 0.72);
}

#globalMessagesBtn {
  position: relative;
}

@media (max-width: 640px) {
  .messages-panel {
    bottom: 4.25rem;
    left: 0.5rem;
    width: calc(100vw - 1rem);
    height: min(380px, calc(100vh - 7rem));
  }
}