:root{--bg:#0f1419;--panel:#171e27;--border:#2a3544;--text:#e8eef5;--muted:#93a0b0;--accent:#3d8bfd;--danger:#f07178;--ok:#7fd99a;font-family:IBM Plex Sans,Segoe UI,sans-serif}*{box-sizing:border-box}body,html{margin:0;height:100%;background:var(--bg);color:var(--text)}a{color:var(--accent);text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}button{background:var(--accent);border:0;border-radius:8px;padding:.55rem .9rem;cursor:pointer;color:#fff}button.secondary{background:transparent;border:1px solid var(--border);color:var(--text)}button:disabled{opacity:.5;cursor:not-allowed}input,select,textarea{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:.55rem .7rem;width:100%}.shell{display:grid;grid-template-columns:280px 1fr;height:100vh}.sidebar{border-right:1px solid var(--border);padding:1rem;overflow:auto}.main{display:flex;flex-direction:column;min-width:0}.messages{flex:1 1;overflow:auto;padding:1.25rem;display:flex;flex-direction:column;gap:.9rem}.bubble{max-width:72ch;padding:.85rem 1rem;border-radius:12px;line-height:1.5}.bubble.user{margin-left:auto;background:#243044}.bubble.assistant{background:var(--panel);border:1px solid var(--border)}.composer{display:flex;gap:.6rem;padding:1rem;border-top:1px solid var(--border)}.composer textarea{min-height:52px;resize:vertical}.login{max-width:380px;margin:12vh auto;background:var(--panel);padding:2rem;border-radius:16px;border:1px solid var(--border)}.muted{color:var(--muted)}.error{color:var(--danger)}.list-item{display:block;padding:.7rem;border-radius:8px;margin-bottom:.35rem}.list-item.active,.list-item:hover{background:#1f2834}.topbar{display:flex;justify-content:space-between;align-items:center;padding:.8rem 1rem;border-bottom:1px solid var(--border)}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:.6rem;border-bottom:1px solid var(--border);font-size:.92rem}.pending{opacity:.7;font-style:italic}