:root{color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,sans-serif}body{margin:0;background:#f4f4f5;color:#18181b}@media (prefers-color-scheme: dark){body{background:#18181b;color:#f4f4f5}}.app-shell{max-width:960px;margin:0 auto;padding:2rem 1.5rem}header.app-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}nav.tabs{display:flex;gap:.5rem;margin-bottom:1.5rem}nav.tabs button{padding:.5rem 1rem;border:1px solid #a1a1aa;background:transparent;border-radius:6px;cursor:pointer}nav.tabs button.active{background:#6366f1;color:#fff;border-color:#6366f1}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:.5rem .75rem;border-bottom:1px solid #a1a1aa55}form.login-form{display:flex;flex-direction:column;gap:.75rem;max-width:320px;margin:4rem auto}form.login-form input{padding:.5rem;border-radius:6px;border:1px solid #a1a1aa}form.login-form button{padding:.6rem;border-radius:6px;border:none;background:#6366f1;color:#fff;cursor:pointer}.error-banner{color:#dc2626;margin-bottom:1rem}