:root {
  --bg: #f6f7f9; --card: #fff; --text: #1b1f24; --muted: #667085; --line: #e4e7ec;
  --brand: #3b5bdb; --brand-soft: #edf2ff;
  --red: #d92d20; --red-soft: #fef3f2; --amber: #b54708; --amber-soft: #fffaeb;
  --green: #067647; --green-soft: #ecfdf3; --blue-soft: #eff8ff; --blue: #175cd3;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --card: #171a21; --text: #e6e8ec; --muted: #98a2b3; --line: #2a2f3a;
    --brand: #7c9cff; --brand-soft: #1d2540;
    --red: #ff6b5e; --red-soft: #3a1714; --amber: #f5b14c; --amber-soft: #33240c;
    --green: #47cd89; --green-soft: #0f2d1e; --blue-soft: #102542; --blue: #84caff;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.35rem; margin: 0 0 .25rem; }
h2 { font-size: 1.1rem; margin: 1.25rem 0 .5rem; }
h3 { font-size: 1rem; margin: 1rem 0 .4rem; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

header.top { position: sticky; top: 0; z-index: 10; background: var(--card); border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 1rem; padding: .6rem 1rem; padding-top: max(.6rem, env(safe-area-inset-top)); }
header.top .logo { font-weight: 700; color: var(--text); }
header.top nav { margin-left: auto; display: flex; gap: .9rem; font-size: .9rem; }
main { max-width: 1100px; margin: 0 auto; padding: 1rem; padding-bottom: 4rem; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; margin-bottom: 1rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }

.badge { display: inline-block; padding: .1rem .55rem; border-radius: 999px; font-size: .78rem; font-weight: 600; background: var(--line); color: var(--text); white-space: nowrap; }
.b-rojo, .b-alta { background: var(--red-soft); color: var(--red); }
.b-amarillo, .b-media { background: var(--amber-soft); color: var(--amber); }
.b-verde, .b-oportunidad { background: var(--green-soft); color: var(--green); }
.b-baja { background: var(--blue-soft); color: var(--blue); }
.dot { width: .7rem; height: .7rem; border-radius: 50%; display: inline-block; background: var(--line); }
.dot.rojo { background: var(--red); } .dot.amarillo { background: var(--amber); } .dot.verde { background: var(--green); }

.kpis { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: .5rem; margin: .75rem 0; }
.kpi { background: var(--bg); border-radius: 10px; padding: .5rem .65rem; }
.kpi .l { font-size: .75rem; color: var(--muted); }
.kpi .v { font-weight: 700; font-size: 1.05rem; }
.up { color: var(--green); } .down { color: var(--red); }

.tabs { display: flex; gap: .25rem; overflow-x: auto; border-bottom: 1px solid var(--line); margin: 1rem 0; scrollbar-width: none; }
.tabs a { padding: .55rem .8rem; color: var(--muted); border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a.on { color: var(--text); border-color: var(--brand); font-weight: 600; text-decoration: none; }

button, .btn { font: inherit; border: 1px solid var(--line); background: var(--card); color: var(--text); padding: .5rem .9rem;
  border-radius: 10px; cursor: pointer; display: inline-block; }
button.primary, .btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
button.danger { color: var(--red); }
button:disabled { opacity: .55; cursor: wait; }
input, select, textarea { font: inherit; width: 100%; padding: .55rem .65rem; border: 1px solid var(--line); border-radius: 10px;
  background: var(--card); color: var(--text); }
textarea { min-height: 5.5rem; resize: vertical; }
label { display: block; font-size: .85rem; font-weight: 600; margin: .75rem 0 .25rem; }
label .hint { font-weight: 400; color: var(--muted); }
.form-grid { display: grid; gap: 0 1rem; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.check { display: flex; align-items: center; gap: .4rem; font-weight: 400; }
.check input { width: auto; }

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; font-size: .87rem; }
th, td { text-align: right; padding: .45rem .5rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
th:first-child, td:first-child { text-align: left; white-space: normal; min-width: 170px; }
th { color: var(--muted); font-weight: 600; font-size: .78rem; }

.finding { border-left: 4px solid var(--line); padding: .6rem .8rem; margin: .6rem 0; background: var(--bg); border-radius: 0 10px 10px 0; }
.finding.alta { border-color: var(--red); } .finding.media { border-color: var(--amber); } .finding.baja { border-color: var(--blue); }
.finding p { margin: .25rem 0; }
ul.clean { padding-left: 1.1rem; margin: .3rem 0; }

.chat { display: flex; flex-direction: column; gap: .6rem; }
.msg { padding: .6rem .8rem; border-radius: 12px; max-width: 92%; overflow-x: auto; }
.msg.user { align-self: flex-end; background: var(--brand-soft); }
.msg.assistant { align-self: flex-start; background: var(--card); border: 1px solid var(--line); }
.msg p:first-child { margin-top: 0; } .msg p:last-child { margin-bottom: 0; }
.chat-form { position: sticky; bottom: 0; background: var(--bg); padding: .6rem 0; padding-bottom: max(.6rem, env(safe-area-inset-bottom)); }
.chat-form textarea { min-height: 3rem; }

.notice { padding: .6rem .8rem; border-radius: 10px; background: var(--blue-soft); color: var(--blue); margin-bottom: 1rem; }
.notice.err { background: var(--red-soft); color: var(--red); }
.notice.ok { background: var(--green-soft); color: var(--green); }
details summary { cursor: pointer; font-weight: 600; }
pre { white-space: pre-wrap; word-break: break-word; font-size: .8rem; background: var(--bg); padding: .6rem; border-radius: 8px; }
.login { max-width: 360px; margin: 12vh auto; }
.spinner { width: 1rem; height: 1rem; border: 2px solid var(--line); border-top-color: var(--brand); border-radius: 50%;
  display: inline-block; animation: spin .8s linear infinite; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 640px) {
  main { padding: .75rem; }
  header.top nav { gap: .7rem; font-size: .85rem; }
  .card { padding: .85rem; }
}