@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap";*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;background:linear-gradient(180deg,#f8fafc,#eef2ff,#f8fafc)}button,input,textarea{font-family:inherit}button{cursor:pointer}input[type=file]{display:none!important;visibility:hidden!important;opacity:0!important;width:0!important;height:0!important;position:absolute!important;pointer-events:none!important}#root{height:100%}.app-shell{min-height:100vh;display:flex;flex-direction:column}.top-nav{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;background:#fffffff2;border-bottom:1px solid #e5e7eb}.top-nav-title{display:flex;align-items:center;gap:8px;font-weight:600;color:#0f172a}.main-container{flex:1;display:flex;justify-content:center;padding:16px}.card{width:100%;max-width:800px;background:#fff;border-radius:16px;box-shadow:0 4px 16px #0f172a0d;display:flex;flex-direction:column;overflow:hidden}.chat-container{flex:1;display:flex;flex-direction:column}.chat-messages{flex:1;padding:20px;overflow-y:auto}.chat-bubble-row{display:flex;margin-bottom:12px}.chat-bubble-row.user{justify-content:flex-end}.chat-bubble-row.ai{justify-content:flex-start}.chat-bubble{max-width:75%;padding:10px 14px;border-radius:12px;font-size:14px;line-height:1.5}.chat-bubble.user{background:#0f172a;color:#fff}.chat-bubble.ai{background:#f1f5f9;color:#0f172a}.chat-input-bar{display:flex;gap:8px;padding:12px;border-top:1px solid #e5e7eb;background:#fff}.chat-input{flex:1;resize:none;border:1px solid #e5e7eb;border-radius:8px;padding:8px 10px;font-size:14px;outline:none}.chat-send-btn{background:#0f172a;color:#fff;border:none;border-radius:8px;padding:8px 16px;font-size:14px}.empty-state{text-align:center;margin-top:80px;color:#475569}.error{color:#b91c1c;font-size:12px;padding:6px 12px;background:#fef2f2;border-top:1px solid #fee2e2}