html,body{background:#fff;margin:0;padding:0}#root{min-height:100vh}*{box-sizing:border-box}.app{color:#1a2233;flex-direction:column;gap:16px;max-width:1100px;margin:0 auto;padding:24px 20px 40px;font-family:-apple-system,BlinkMacSystemFont,Pretendard,Segoe UI,sans-serif;display:flex}.app__header h1{margin:0;font-size:22px}.app__subtitle{color:#667085;margin:4px 0 0;font-size:14px}.panel{flex-direction:column;gap:10px;display:flex}.input{resize:vertical;color:#1a2233;border:1px solid #d0d5dd;border-radius:8px;width:100%;min-height:130px;padding:12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;line-height:1.5}.input:focus{border-color:#1e3a5f;outline:none;box-shadow:0 0 0 3px #1e3a5f1f}.toolbar{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.btn{cursor:pointer;color:#344054;background:#fff;border:1px solid #d0d5dd;border-radius:8px;padding:8px 14px;font-size:14px}.btn:hover:not(:disabled){background:#f4f6f9}.btn:disabled{opacity:.45;cursor:not-allowed}.btn--primary{color:#fff;background:#1e3a5f;border-color:#1e3a5f}.btn--primary:hover:not(:disabled){background:#16304f}.btn--file{align-items:center;display:inline-flex}.meta{color:#667085;margin-left:auto;font-size:13px}.error{color:#b42318;background:#fef3f2;border:1px solid #fda29b;border-radius:8px;padding:8px 12px;font-size:13px}.viewer{background:#f9fafb;border:1px solid #d0d5dd;border-radius:10px;height:75vh;overflow:hidden}.viewer__frame{border:none;width:100%;height:100%}.viewer__empty{color:#98a2b3;justify-content:center;align-items:center;height:100%;font-size:14px;display:flex}