:root {
  --brand: #1f6f5c;
  --brand-2: #e7f3ef;
  --bg: #fbfcfb;
  --card: #ffffff;
  --fg: #14201c;
  --fg2: #5b6763;
  --line: #e1e7e4;
  --warn: #9a5700;
  --radius: 14px;
  --chart-line: #08805f;
  --chart-grid: #e1e7e4;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --brand: #6fd3b5;
    --brand-2: #1c2f29;
    --bg: #121615;
    --card: #1a1f1d;
    --fg: #e8eeeb;
    --fg2: #9fb0aa;
    --line: #2c3532;
    --warn: #f0b35a;
    --chart-line: #6fd3b5;
    --chart-grid: #2c3532;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--brand); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header.top { border-bottom: 1px solid var(--line); background: var(--card); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 12px; padding-bottom: 12px; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--fg); text-decoration: none; }
.logo img { width: 30px; height: 30px; border-radius: 8px; }
nav a { margin-left: 14px; color: var(--fg2); text-decoration: none; font-size: 15px; }
nav a:first-child { margin-left: 0; }
nav a:hover { color: var(--brand); }
main { padding: 28px 0 40px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -.01em; }
h2 { font-size: 20px; margin: 28px 0 8px; }
.lead { color: var(--fg2); margin: 0 0 22px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
form.calc { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
form.calc .full { grid-column: 1 / -1; }
label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 4px; }
label small { font-weight: 400; color: var(--fg2); }
input, select {
  width: 100%; font: inherit; color: var(--fg); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 9px 11px;
}
input:focus, select:focus { outline: 2px solid var(--brand); outline-offset: 1px; }
button {
  font: inherit; font-weight: 600; border: 0; border-radius: 10px; padding: 11px 18px;
  background: var(--brand); color: #fff; cursor: pointer;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) button { color: #0d1a16; } }
.hint { font-size: 13px; color: var(--fg2); margin: 4px 0 0; }
#vista-resultado .card { margin-bottom: 14px; }
h3 { font-size: 16px; margin: 0 0 8px; }
.badge { display: inline-block; vertical-align: middle; font-size: 12px; font-weight: 600; letter-spacing: .02em; color: var(--brand); background: var(--brand-2); border-radius: 999px; padding: 2px 9px; margin-left: 6px; }
.btn-sec { background: var(--card); color: var(--brand); border: 1px solid var(--brand); padding: 9px 14px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn-sec { color: var(--brand); } }
.btn-link { font-weight: 600; text-decoration: none; }
.inline { display: flex; gap: 8px; }
.inline input { flex: 1; min-width: 0; }
.datos-top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.datos { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 10px 18px; margin: 4px 0 0; }
.datos dt { font-size: 12px; color: var(--fg2); text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
.datos dd { margin: 0; }
.label { font-size: 12px; color: var(--fg2); text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
.big { font-size: 36px; font-weight: 700; letter-spacing: -.02em; margin: 4px 0 2px; font-variant-numeric: tabular-nums; }
.muted { color: var(--fg2); }
.small { font-size: 13px; }
.pct { color: var(--brand); font-weight: 600; }
.warn { color: var(--warn); margin-top: 8px; font-size: 14px; }
table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: 15px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--fg2); }
th.num, td.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.error { color: #b3261e; }
.hint-ley { font-size: 14px; margin: -4px 0 0; padding: 8px 12px; border-radius: 10px; background: var(--brand-2); }
.otro-criterio p { margin: 0 0 10px; }
.aviso-legal { font-size: 14px; color: var(--fg2); border-left: 3px solid var(--warn); padding: 8px 12px; background: var(--card); border-radius: 0 10px 10px 0; margin: 4px 0 12px; }
footer { border-top: 1px solid var(--line); color: var(--fg2); font-size: 14px; padding: 18px 0 30px; }
footer a { color: var(--fg2); }
.prose p, .prose li { color: var(--fg); }
.prose h2 { font-size: 18px; }
@media (max-width: 560px) {
  form.calc { grid-template-columns: 1fr; }
    h1 { font-size: 25px; }
  .big { font-size: 30px; }
  nav a { margin-left: 10px; font-size: 14px; }
  table { font-size: 14px; }
  .inline { flex-direction: column; }
  th.hide-sm, td.hide-sm { display: none; }
}