:root{
  --bg:#f1f5f9; --panel:#ffffff; --ink:#0f172a; --muted:#64748b; --line:#e2e8f0;
  --brand:#4f46e5; --brand-dark:#4338ca; --ok:#059669; --warn:#d97706; --bad:#dc2626;
  --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font:15px/1.55 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin:0 0 .35rem;line-height:1.25}
small,.muted{color:var(--muted)}
code{background:#f0f2f7;border:1px solid var(--line);padding:1px 5px;border-radius:6px;font-size:12.5px}

/* shell */
.shell{display:flex;min-height:100vh}
.sidebar{width:236px;flex:0 0 236px;background:#0f172a;color:#cbd5e1;padding:18px 14px;display:flex;flex-direction:column;gap:6px}
.brand{font-weight:700;font-size:17px;color:#fff;letter-spacing:.2px;padding:6px 8px 16px;display:flex;gap:8px;align-items:center}
.brand span.dot{width:9px;height:9px;border-radius:50%;background:#22d3ee;box-shadow:0 0 12px #22d3ee}
.nav-label{font-size:11px;text-transform:uppercase;letter-spacing:.09em;color:#64748b;padding:12px 8px 4px}
.sidebar a{display:block;padding:9px 10px;border-radius:10px;color:#cbd5e1;font-size:14px}
.sidebar a:hover{background:#1e293b;color:#fff;text-decoration:none}
.sidebar a.active{background:var(--brand);color:#fff}
.sidebar .spacer{flex:1}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{background:#fff;border-bottom:1px solid var(--line);padding:12px 22px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.topbar .who{font-size:13.5px;color:var(--muted)}
.content{padding:22px;max-width:1180px;width:100%}

/* cards + grids */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:0 1px 2px rgba(15,23,42,.04)}
.card + .card{margin-top:16px}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.grid{display:grid;gap:14px}
.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.grid.cols-4{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.stat .k{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.stat .v{font-size:28px;font-weight:700;margin-top:6px}

/* table */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:11.5px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);background:#f8fafc}
tbody tr:hover{background:#f8fafc}
td.actions{white-space:nowrap}
td.actions a,td.actions button{margin-right:6px}

/* forms */
label{display:block;font-size:13px;font-weight:600;margin-bottom:5px}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=url],select,textarea{
  width:100%;padding:9px 11px;border:1px solid #cbd5e1;border-radius:10px;font-size:14px;background:#fff;color:var(--ink);font-family:inherit}
textarea{min-height:110px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid #c7d2fe;border-color:var(--brand)}
.field{margin-bottom:14px}
.field .hint{font-size:12px;color:var(--muted);margin-top:4px}
.form-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.check{display:flex;align-items:center;gap:8px;font-size:14px}
.check input{width:16px;height:16px}
.check label{margin:0;font-weight:500}

/* buttons */
.btn{display:inline-block;border:1px solid transparent;border-radius:10px;padding:9px 14px;font-size:14px;font-weight:600;cursor:pointer;background:var(--brand);color:#fff}
.btn:hover{background:var(--brand-dark);text-decoration:none}
.btn.secondary{background:#fff;border-color:#cbd5e1;color:var(--ink)}
.btn.secondary:hover{background:#f8fafc}
.btn.danger{background:var(--bad)}
.btn.small{padding:5px 10px;font-size:12.5px;border-radius:8px;white-space:nowrap}
.btn.link{background:transparent;color:var(--brand);padding:0;border:0}

/* misc */
.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:11.5px;font-weight:600;border:1px solid transparent}
.badge.ok{background:#ecfdf5;color:var(--ok);border-color:#a7f3d0}
.badge.bad{background:#fef2f2;color:var(--bad);border-color:#fecaca}
.badge.warn{background:#fffbeb;color:var(--warn);border-color:#fde68a}
.badge.info{background:#eef2ff;color:var(--brand);border-color:#c7d2fe}
.flash{border-radius:12px;padding:11px 14px;margin-bottom:14px;font-size:14px;border:1px solid}
.flash.ok{background:#ecfdf5;border-color:#a7f3d0;color:#065f46}
.flash.err{background:#fef2f2;border-color:#fecaca;color:#991b1b}
.errors{background:#fef2f2;border:1px solid #fecaca;color:#991b1b;border-radius:12px;padding:11px 14px;margin-bottom:14px;font-size:13.5px}
.errors ul{margin:6px 0 0;padding-left:18px}
pre.snippet{background:#0f172a;color:#e2e8f0;padding:14px;border-radius:12px;overflow:auto;font-size:12.5px;line-height:1.5}
.pager{display:flex;gap:8px;align-items:center;margin-top:14px;font-size:13.5px}
.pager a,.pager span{padding:6px 10px;border:1px solid var(--line);border-radius:8px;background:#fff}
.chatlog{display:flex;flex-direction:column;gap:10px}
.bubble{max-width:78%;padding:10px 13px;border-radius:14px;font-size:14px;white-space:pre-wrap}
.bubble.user{align-self:flex-end;background:var(--brand);color:#fff;border-bottom-right-radius:4px}
.bubble.assistant{align-self:flex-start;background:#f1f5f9;color:var(--ink);border-bottom-left-radius:4px}
.bubble.system{align-self:center;background:#fef3c7;color:#92400e;font-size:12.5px}
.bubble .meta{display:block;font-size:11px;opacity:.7;margin-top:5px}
.empty{padding:22px;text-align:center;color:var(--muted);font-size:14px}
@media(max-width:820px){.shell{flex-direction:column}.sidebar{width:100%;flex:0 0 auto;flex-direction:row;flex-wrap:wrap}.sidebar .spacer{display:none}.content{padding:14px}}

.input-row { display: flex; gap: 8px; align-items: center; }
.input-row input { flex: 1 1 auto; min-width: 0; }
.btn-outline {
  background: transparent;
  border: 1px solid var(--border, #334155);
  color: var(--text, #e2e8f0);
  white-space: nowrap;
}
.btn-outline:hover { background: rgba(148, 163, 184, .15); }
.btn-sm { padding: 8px 12px; font-size: .85rem; }
.btn:disabled { opacity: .6; cursor: progress; }
.text-error { color: #f87171 !important; }