body { font-family: 'Arial', sans-serif; background-color: #f0f2f5; margin: 0; display: flex; height: 100vh; }
.sidebar { width: 300px; background: white; border-right: 1px solid #ddd; overflow-y: auto; display: flex; flex-direction: column; }
.sidebar-header { padding: 20px; border-bottom: 1px solid #eee; font-weight: bold; font-size: 1.2em; display: flex; justify-content: space-between; align-items: center; }
.profile-item { display: flex; align-items: center; padding: 15px; cursor: pointer; border-bottom: 1px solid #f9f9f9; transition: background 0.2s; }
.profile-item:hover { background: #f0f2f5; }
.profile-item.active { background: #e7f3ff; }
.profile-img { width: 45px; height: 45px; border-radius: 50%; margin-right: 15px; object-fit: cover; }
.profile-info { display: flex; flex-direction: column; }
.profile-name { font-weight: bold; font-size: 0.9em; }
.profile-status { font-size: 0.75em; color: #65676b; }

.chat-area { flex: 1; display: flex; flex-direction: column; background: white; }
.chat-header { padding: 15px 20px; border-bottom: 1px solid #ddd; display: flex; align-items: center; }
.chat-messages { flex: 1; padding: 20px; overflow-y: auto; background: #f0f2f5; display: flex; flex-direction: column; }
.message { max-width: 70%; padding: 10px 15px; border-radius: 18px; margin-bottom: 10px; font-size: 0.95em; line-height: 1.4; }
.message.user { align-self: flex-end; background: #0084ff; color: white; border-bottom-right-radius: 4px; }
.message.bot { align-self: flex-start; background: white; color: #050505; border-bottom-left-radius: 4px; box-shadow: 0 1px 2px rgba(0,0,0,0.1); }
.chat-input { padding: 15px 20px; border-top: 1px solid #ddd; display: flex; align-items: center; }
.chat-input input { flex: 1; padding: 10px 15px; border: 1px solid #ddd; border-radius: 20px; outline: none; }
.chat-input button { background: none; border: none; color: #0084ff; font-weight: bold; margin-left: 15px; cursor: pointer; }

#language-selector { font-size: 0.8em; padding: 5px; border-radius: 5px; }
.loading { font-size: 0.8em; color: #65676b; font-style: italic; }