:root{--bg:#eef4fb;--ink:#0f1b2d;--muted:#5a6f8a;--panel:#fff;--line:#cdd9ea;--accent:#4a90e2;--accent-deep:#2563b8;--accent-soft:#dcecfb;--grid:rgba(74,144,226,.07);--warn:#b45309;--danger:#b42318;--ok:#0f766e;--font-display:"Sora","Segoe UI",sans-serif;--font-body:"IBM Plex Sans","Segoe UI",sans-serif;--font-mono:"IBM Plex Mono",ui-monospace,monospace;--radius:12px;--shadow:0 12px 40px rgba(15,27,45,.08)}*{box-sizing:border-box}body,html{margin:0;padding:0;min-height:100%;color:var(--ink);background:linear-gradient(180deg,#f7fbff 0,var(--bg) 40%),repeating-linear-gradient(0deg,transparent,transparent 23px,var(--grid) 24px),repeating-linear-gradient(90deg,transparent,transparent 23px,var(--grid) 24px);font-family:var(--font-body);font-size:15px}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.shell{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.sidebar{padding:1.4rem 1rem;border-right:1px solid var(--line);background:linear-gradient(180deg,#0f1b2d,#152844);color:#e8eef5;display:flex;flex-direction:column}.brand-mark{font-family:var(--font-display);font-size:1.2rem;font-weight:600;line-height:1.25;letter-spacing:-.03em;color:#fff}.brand-sub{margin-top:.4rem;color:#93a8c3;font-size:.8rem;line-height:1.35}.nav{display:flex;flex-direction:column;gap:.25rem;margin-top:1.75rem;flex:1 1}.nav a{padding:.65rem .8rem;border-radius:10px;color:#c5d3e6;font-size:.92rem;border:1px solid transparent}.nav a:hover{background:rgba(74,144,226,.12);color:#fff}.nav a.active{background:rgba(74,144,226,.22);border-color:rgba(74,144,226,.45);color:#fff}.main{padding:1.5rem 1.75rem 3rem}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem;box-shadow:var(--shadow)}.panel+.panel{margin-top:1rem}h1,h2,h3{font-family:var(--font-display);letter-spacing:-.03em;margin:0 0 .5rem;font-weight:600}.muted{color:var(--muted)}.mono{font-family:var(--font-mono);font-size:.85em}.row{display:flex;gap:.75rem;flex-wrap:wrap;align-items:center}.grid-2{display:grid;grid-template-columns:1.1fr .9fr;grid-gap:1rem;gap:1rem}label{display:block;font-size:.8rem;color:var(--muted);margin-bottom:.3rem;letter-spacing:.02em;text-transform:uppercase;font-weight:600}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:.7rem .8rem;background:#fff;color:var(--ink);transition:border-color .15s,box-shadow .15s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}textarea{min-height:120px;resize:vertical}.btn{border:0;border-radius:10px;padding:.65rem 1.05rem;cursor:pointer;background:linear-gradient(180deg,var(--accent) 0,var(--accent-deep) 100%);color:#fff;font-weight:600;letter-spacing:.01em}.btn.secondary{background:transparent;color:var(--accent-deep);border:1px solid var(--accent)}.btn.ghost{background:transparent;color:#c5d3e6;border:1px solid rgba(197,211,230,.25)}.btn.danger{background:var(--danger)}.btn:disabled{opacity:.55;cursor:not-allowed}.chip{display:inline-flex;align-items:center;gap:.35rem;padding:.25rem .6rem;border-radius:999px;background:var(--accent-soft);color:var(--accent-deep);font-size:.78rem;font-family:var(--font-mono)}.chip.warn{background:#ffedd5;color:var(--warn)}.chip.ok{background:#ccfbf1;color:var(--ok)}.list{display:flex;flex-direction:column;gap:.75rem}.card-item{border:1px solid var(--line);border-radius:12px;padding:.9rem;background:#fff}.chat-log{display:flex;flex-direction:column;gap:.75rem;max-height:420px;overflow:auto;margin-bottom:1rem}.bubble{max-width:85%;padding:.75rem .9rem;border-radius:14px;white-space:pre-wrap;line-height:1.45}.bubble.user{align-self:flex-end;background:linear-gradient(180deg,var(--accent) 0,var(--accent-deep) 100%);color:#fff}.bubble.assistant{align-self:flex-start;background:var(--accent-soft);color:var(--ink)}.footer-note{margin-top:auto;padding-top:1.5rem;color:#93a8c3;font-size:.78rem;line-height:1.5}.auth-screen{min-height:100vh;display:grid;place-items:center;padding:1.5rem}.auth-card{width:min(420px,100%);background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:1.75rem;box-shadow:var(--shadow)}.auth-card h1{font-size:1.45rem}.field{margin-bottom:.9rem}.error-banner{background:#fef3f2;color:var(--danger);border:1px solid #fecdca;border-radius:10px}.error-banner,.success-banner{padding:.7rem .85rem;margin-bottom:1rem;font-size:.9rem}.success-banner{background:#ecfdf3;color:var(--ok);border:1px solid #abefc6;border-radius:10px}.table{width:100%;border-collapse:collapse}.table td,.table th{text-align:left;padding:.7rem .5rem;border-bottom:1px solid var(--line);vertical-align:middle}.table th{font-size:.75rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.user-bar{display:flex;gap:.5rem;align-items:center;margin-top:1rem;padding-top:1rem;border-top:1px solid rgba(197,211,230,.2);color:#c5d3e6;font-size:.82rem}@media (max-width:900px){.shell{grid-template-columns:1fr}.sidebar{border-right:0;border-bottom:1px solid var(--line)}.grid-2{grid-template-columns:1fr}}