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.theme-toggle-btn:hover{background-color:#ffffff1a}.app-container{display:flex;flex-direction:column;height:100vh;background-color:var(--bg-body)}.app-header{background-color:var(--bg-card);padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 5px var(--shadow-color);z-index:10}.header-left h1{margin:0;font-size:1.2rem;color:var(--text-main)}.header-right{display:flex;align-items:center;gap:15px}.user-greeting{font-weight:500}.icon-btn{background:none;border:none;color:var(--text-sub);cursor:pointer;padding:5px;border-radius:50%;transition:all .2s;display:flex;align-items:center;justify-content:center}.icon-btn:hover{background-color:var(--shadow-color);color:var(--primary-color)}.chat-container{flex:1;display:flex;flex-direction:column;overflow:hidden;max-width:1200px;width:100%;margin:0 auto}.messages-list{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.5rem}.message-row{display:flex;width:100%}.my-message{justify-content:flex-end}.other-message{justify-content:flex-start}.message-bubble{max-width:70%;padding:.75rem 1rem;border-radius:18px;position:relative;word-wrap:break-word;box-shadow:0 1px 2px var(--shadow-color)}.my-message .message-bubble{background-color:var(--primary-color);color:#fff;border-bottom-right-radius:4px}.other-message .message-bubble{background-color:var(--bg-card);color:var(--text-main);border-bottom-left-radius:4px}.message-sender{font-size:.75rem;font-weight:700;margin-bottom:4px;opacity:.8}.my-message .message-sender{display:none}.message-time{font-size:.65rem;text-align:right;margin-top:4px;opacity:.7}.message-media{max-width:100%;border-radius:8px;margin-top:5px;display:block}.chat-input-area{background-color:var(--bg-card);padding:1rem;display:flex;align-items:center;gap:10px;border-top:1px solid var(--input-border)}.chat-input-area input[type=text]{flex:1;padding:12px;border-radius:24px;border:1px solid var(--input-border);background-color:var(--input-bg);color:var(--text-main);outline:none}.chat-input-area input[type=text]:focus{border-color:var(--primary-color)}.send-btn{background-color:var(--primary-color);color:#fff;border:none;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .2s}.send-btn:hover{background-color:#357abd}.send-btn:disabled{background-color:#ccc;cursor:default}
