*{box-sizing:border-box;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}body{background-color:#f4f7f6;display:flex;justify-content:center;align-items:center;min-height:100vh}.chat-container{width:100%;max-width:600px;height:90vh;max-height:800px;background-color:#fff;border-radius:20px;box-shadow:0 10px 30px #0000001a;display:flex;flex-direction:column;overflow:hidden}.chat-header{padding:24px;background:linear-gradient(135deg,#6e8efb,#a777e3);color:#fff;text-align:center;border-bottom:1px solid #eee}.chat-header h1{font-size:1.8rem;margin-bottom:5px}.chat-header p{opacity:.9}.chat-history{flex-grow:1;padding:20px;overflow-y:auto}.chat-message{display:flex;margin-bottom:15px;max-width:80%}.chat-message.user{justify-content:flex-end;margin-left:auto}.chat-message.bot{justify-content:flex-start}.chat-message .content{padding:12px 18px;border-radius:20px;font-size:1rem}.chat-message.user>div{background-color:#6e8efb;color:#fff;border-top-right-radius:5px}.chat-message.bot>div{background-color:#f1f0f0;color:#333;border-top-left-radius:5px}.chat-input-area{padding:20px;border-top:1px solid #eee;display:flex;align-items:center;gap:15px}.dropzone{flex-grow:1;border:2px dashed #ccc;border-radius:10px;padding:20px;text-align:center;cursor:pointer;transition:border-color .3s,background-color .3s;background-color:#fafafa}.dropzone.active{border-color:#6e8efb;background-color:#f0f3ff}.dropzone p{color:#888}.thumbsContainer{display:flex;flex-wrap:wrap;gap:10px}.thumb{position:relative;width:100px;height:100px}.thumbInner{border:1px solid #ddd;border-radius:8px;overflow:hidden;width:100%;height:100%}.thumbImg{width:100%;height:100%;object-fit:cover}.remove-btn{position:absolute;top:-5px;right:-5px;background:#000000b3;color:#fff;border:none;border-radius:50%;width:20px;height:20px;cursor:pointer;font-weight:700;line-height:20px;text-align:center}.send-btn{background-color:#6e8efb;color:#fff;border:none;padding:15px 25px;border-radius:10px;cursor:pointer;font-size:1rem;font-weight:700;transition:background-color .3s,transform .2s}.send-btn:hover{background-color:#5a78e6;transform:scale(1.02)}.send-btn:disabled{background-color:#ccc;cursor:not-allowed;transform:none}