.chat-container{position:fixed;bottom:20px;right:20px;z-index:1000;display:flex;flex-direction:column;align-items:flex-end}.chat-toggle-btn{width:60px;height:60px;border-radius:50%;background-color:var(--primary-color);color:#fff;border:none;cursor:pointer;box-shadow:0 4px 15px rgba(0,0,0,.2);display:flex;align-items:center;justify-content:center}.chat-toggle-btn.hidden{display:none}.chat-toggle-btn:hover{transform:scale(1.1);background-color:#0056b3}.chat-icon{font-size:30px}.chat-window{display:none;margin-bottom:20px;border:1px solid var(--border-color);border-radius:12px;overflow:hidden;flex-direction:column;width:350px;height:450px;background-color:#fff;box-shadow:0 10px 25px rgba(0,0,0,.15)}.chat-window.show{display:flex}.chat-header{background-color:var(--primary-color);color:#fff;padding:12px 15px;font-weight:700;display:flex;justify-content:space-between;align-items:center}.chat-close-btn{background:0 0;border:none;color:#fff;font-size:24px;cursor:pointer;line-height:1;padding:0}.chat-messages{flex:1;padding:15px;overflow-y:auto;display:flex;flex-direction:column;gap:10px}.chat-message{max-width:80%;padding:8px 12px;border-radius:15px;font-size:.9rem;line-height:1.4}.user-message{align-self:flex-end;background-color:var(--primary-color);color:#fff;border-bottom-right-radius:2px}.ai-message{align-self:flex-start;background-color:#f1f0f0;color:#333;border-bottom-left-radius:2px}.chat-input-area{display:flex;padding:10px;border-top:1px solid var(--border-color);gap:10px}.chat-input-area input{flex:1;padding:8px 12px;border:1px solid var(--border-color);border-radius:20px;outline:none}.chat-input-area button{background-color:var(--primary-color);color:#fff;border:none;padding:8px 15px;border-radius:20px;cursor:pointer;font-weight:700;transition:background-color .3s}.chat-input-area button:hover{background-color:#0056b3}.chat-hint{display:none;position:absolute;bottom:80px;right:0;background:#fff;color:var(--text-color);border:1px solid var(--border-color);padding:10px 12px;border-radius:10px;box-shadow:0 8px 18px rgba(0,0,0,.12);font-size:.95rem;max-width:360px;line-height:1.3;z-index:1001;width:260px}.chat-hint.show{display:block}.chat-hint::after{content:'';position:absolute;bottom:-8px;right:16px;width:0;height:0;border-left:8px solid transparent;border-right:8px solid transparent;border-top:8px solid #fff}