:root{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#0f172a;background-color:#f8fafc}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:#f8fafc}#root{min-height:100vh}.layout{display:grid;grid-template-columns:1fr;grid-template-rows:auto 1fr auto;min-height:100vh}@media (min-width: 1024px){.layout__content{display:grid;grid-template-columns:2fr 1fr;gap:16px}}.pdf-shell{border:1px solid #e2e8f0;border-radius:12px;background:#fff;min-height:60vh;padding:16px}.sidebar{border:1px solid #e2e8f0;border-radius:12px;background:#fff;padding:16px;min-height:60vh}.chat-dock{position:fixed;bottom:24px;right:24px;width:min(360px,90vw);border-radius:16px;border:1px solid #cbd5f5;background:#fff;box-shadow:0 20px 48px #0f172a29;padding:16px}.chat-dock h4{margin:0 0 8px}@keyframes spin{to{transform:rotate(360deg)}}