:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;color:#18181b;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#2563eb;text-decoration:inherit}a:hover{color:#1d4ed8}body{margin:0;min-width:320px;min-height:100vh}#root{min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#f4f4f5;cursor:pointer;transition:border-color .25s}button:hover{border-color:#2563eb}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.appShell{min-height:100vh;background:#f7f7f8;color:#18181be6;display:flex;flex-direction:column}.appHeader{position:sticky;top:0;z-index:20;background:#ffffffd9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(16,16,20,.1)}.appHeaderInner{max-width:880px;margin:0 auto;padding:16px 20px}.appTitle{font-size:16px;font-weight:600;letter-spacing:.2px}.appSubtitle{margin-top:4px;font-size:13px;color:#18181bad}.appMain{width:100%;max-width:880px;margin:0 auto;padding:16px 20px 24px;display:flex;flex-direction:column;gap:14px;flex:1}.uploadPanel{background:#fff;border:1px solid rgba(16,16,20,.1);border-radius:14px;padding:12px}.uploadRow{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.uploadInput{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.uploadButton{display:inline-flex;align-items:center;justify-content:center;padding:9px 12px;border-radius:12px;background:#1010140d;border:1px solid rgba(16,16,20,.14);color:#18181be6;cursor:pointer;-webkit-user-select:none;user-select:none}.primaryButton{padding:9px 12px;border-radius:12px;background:#2563eb;border:1px solid rgba(37,99,235,.4);color:#fff}.primaryButton:disabled{opacity:.6;cursor:not-allowed}.uploadMeta{font-size:13px;color:#18181bad;flex:1;min-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.uploadStatus{margin-top:10px;font-size:13px;color:#18181bcc}.chatPanel{flex:1;display:flex;flex-direction:column;border:1px solid rgba(16,16,20,.1);border-radius:14px;background:#f1f1f3;overflow:hidden}.messages{flex:1;padding:18px 16px;overflow:auto}.emptyState{color:#18181bad;font-size:14px;line-height:1.4;padding:28px 10px}.messageRow{display:flex;margin:10px 0}.messageRow.isUser{justify-content:flex-end}.messageRow.isAi{justify-content:flex-start}.messageBubble{max-width:min(680px,90%);padding:10px 12px;border-radius:14px;font-size:14px;line-height:1.45;white-space:pre-wrap;word-break:break-word}.messageRow.isUser .messageBubble{background:#2563eb;color:#fff;border:1px solid rgba(37,99,235,.35)}.messageRow.isAi .messageBubble{background:#1010140d;color:#18181beb;border:1px solid rgba(16,16,20,.1)}.messageBubble.isTyping{opacity:.85}.composer{border-top:1px solid rgba(16,16,20,.1);background:#ffffffb3;padding:12px}.composerInner{display:flex;align-items:flex-end;gap:10px;background:#1010140d;border:1px solid rgba(16,16,20,.14);border-radius:14px;padding:10px}.composerInput{flex:1;resize:none;font-family:inherit;border:none;outline:none;background:transparent;color:#18181beb;font-size:14px;line-height:1.4;min-height:22px;max-height:160px}.sendButton{padding:9px 12px;border-radius:12px;background:#e9e9ec;border:1px solid rgba(16,16,20,.14);color:#18181be6}.sendButton:disabled{opacity:.55;cursor:not-allowed}.composerHint{margin-top:8px;font-size:12px;color:#18181b9e;padding:0 4px}.modeToggle{display:flex;gap:6px;margin-top:12px}.modeButton{padding:6px 14px;border-radius:20px;font-size:12px;font-weight:600;letter-spacing:.4px;cursor:pointer;border:1px solid transparent;background:#1010140d;color:#18181b9e;transition:background .15s,color .15s,border-color .15s}.modeButton:hover{background:#1010141f;color:#18181bd9}.modeButton.isActive{background:#2563eb1a;border-color:#2563eb59;color:#1d4ed8}.modeDescription{margin-top:6px;font-size:12px;color:#18181b8c;min-height:16px}.modeBadge{display:inline-block;padding:2px 7px;border-radius:10px;font-size:10px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;margin-bottom:6px;background:#1010140d;color:#18181b9e;border:1px solid rgba(16,16,20,.1)}.messageBubble img{max-width:100%;height:auto;border-radius:8px;margin:6px 0}.messageBubble.isError,.messageRow.isAi .messageBubble.isError{background:#ef444414;border:1px solid #dc2626;color:#b91c1c}.errorContent{display:flex;align-items:flex-start;gap:8px}.warningIcon{flex-shrink:0;margin-top:2px;color:#dc2626}.uploadStatus.isError{display:flex;align-items:flex-start;gap:8px;padding:8px 10px;border:1px solid #dc2626;border-radius:10px;background:#ef444414;color:#b91c1c}