/* ==========================================================================
   TerreNet blog — "Mensura" editorial layer (2026-11-10)
   Requiere /css/tn-2026.css (tokens --tn-*, fuentes, botones, tabbar) cargado antes.
   Sin Tailwind: todo se resuelve con las clases tn-* y selectores semánticos.
   ========================================================================== */

html { scroll-behavior: smooth; }
body.tn-blog { margin: 0; background: var(--tn-paper); color: var(--tn-ink); }
.tn-blog *, .tn-blog *::before, .tn-blog *::after { box-sizing: border-box; }
.tn-blog img { max-width: 100%; height: auto; display: block; }
.tn-blog [hidden] { display: none !important; }
.tn-blog .hidden { display: none; }
.tn-blog .sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.tn-skip {
  position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--tn-ink); color: #fff;
  padding: 12px 16px; border-radius: var(--tn-r2); font-weight: 600; text-decoration: none;
}
.tn-skip:focus { top: 8px; }

/* ---------- Header ---------- */
.tn-bhead { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .97); border-bottom: 1px solid var(--tn-line); }
.tn-bhead__in {
  max-width: 1200px; margin: 0 auto; padding: 0 16px; min-height: 64px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.tn-bhead__brand {
  display: inline-flex; align-items: center; gap: 10px; min-height: 44px; text-decoration: none;
  color: var(--tn-ink); font-weight: 700; font-size: 1.15rem; font-stretch: 92%; letter-spacing: -0.01em;
}
.tn-bhead__brand img { width: 32px; height: 32px; }
.tn-bhead__nav { display: flex; align-items: center; gap: 4px; }
.tn-bhead__nav a:not(.btn) {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 12px;
  color: var(--tn-ink-2); font-weight: 500; text-decoration: none; border-radius: var(--tn-r2);
}
.tn-bhead__nav a:not(.btn):hover { color: var(--tn-brand-strong); background: var(--tn-brand-tint); }
.tn-bhead__nav a[aria-current="page"] { color: var(--tn-brand-strong); background: var(--tn-brand-tint); }
.tn-bhead__nav .btn { margin-left: 8px; padding: 0 16px; display: inline-flex; align-items: center; text-decoration: none; font-size: .95rem; }
@media (max-width: 560px) {
  .tn-bhead__nav a.tn-bhead__search { display: none; }
  .tn-bhead__nav .btn { margin-left: 4px; padding: 0 12px; }
}
@media (min-width: 600px) { .tn-bhead__in { padding: 0 24px; } }
@media (min-width: 1200px) { .tn-bhead__in { padding: 0 32px; } }

/* ---------- Footer ---------- */
.tn-bfoot { background: var(--tn-deep); color: #b6c6bc; margin-top: 72px; }
.tn-bfoot__in {
  max-width: 1200px; margin: 0 auto; padding: 40px 16px 32px;
  display: grid; gap: 28px;
}
.tn-bfoot__brand { display: flex; flex-direction: column; gap: 10px; }
.tn-bfoot__logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 1.1rem; font-stretch: 92%; }
.tn-bfoot__logo img { width: 32px; height: 32px; }
.tn-bfoot__brand p { margin: 0; max-width: 36ch; color: #a3b4aa; font-size: .95rem; }
.tn-bfoot__links { display: flex; flex-wrap: wrap; gap: 0 20px; }
.tn-bfoot__links a { display: inline-flex; align-items: center; min-height: 44px; color: #e1ebe5; text-decoration: none; font-size: .95rem; }
.tn-bfoot__links a:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
.tn-bfoot__legal { border-top: 1px solid rgba(255, 255, 255, .1); padding-top: 20px; font-size: .875rem; color: #8fa298; }
.tn-bfoot :where(a):focus-visible { outline-color: #8fd1ad; }
@media (min-width: 600px) { .tn-bfoot__in { padding: 48px 24px 32px; } }
@media (min-width: 960px) {
  .tn-bfoot__in { grid-template-columns: 1fr auto; align-items: start; padding: 56px 32px 36px; }
  .tn-bfoot__legal { grid-column: 1 / -1; }
}

/* ---------- Artículo ---------- */
.tn-article { max-width: 680px; margin: 0 auto; padding: 28px 16px 8px; scroll-margin-top: 80px; }
@media (min-width: 600px) { .tn-article { padding: 44px 24px 8px; } }

.tn-crumbs { font-size: .875rem; color: var(--tn-muted); margin: 0 0 20px; }
.tn-crumbs a { color: var(--tn-muted); }
.tn-crumbs span { margin: 0 6px; }

.tn-ahead { margin: 0 0 28px; }
.tn-back {
  display: inline-flex; align-items: center; min-height: 44px; margin: -8px 0 0; font-size: .95rem; font-weight: 600;
  color: var(--tn-brand-strong); text-decoration: none;
}
.tn-back:hover { text-decoration: underline; text-underline-offset: 3px; }
.tn-kicker { display: block; margin: 4px 0 10px; font-size: .875rem; font-weight: 500; color: var(--tn-muted); letter-spacing: 0; text-transform: none; }
.tn-article h1 {
  font-family: var(--tn-font); font-stretch: 88%; font-weight: 650; letter-spacing: -0.012em;
  font-size: clamp(2rem, 1.45rem + 2.4vw, 2.9rem); line-height: 1.08; margin: 0 0 16px; color: var(--tn-ink); text-wrap: balance;
}
.tn-lead { margin: 0 0 16px; font-size: 1.25rem; line-height: 1.5; color: var(--tn-ink-2); text-wrap: pretty; }
.tn-meta { margin: 0 0 24px; font-size: .875rem; line-height: 1.5; color: var(--tn-muted); }
.tn-meta strong { font-weight: 600; color: var(--tn-ink-2); }
.tn-ahead .tn-meta { margin: 0; padding-top: 16px; border-top: 1px solid var(--tn-line); }

/* Cuerpo */
.tn-article :where(p, li, dd, td, th, figcaption) { overflow-wrap: break-word; }
.tn-article p { margin: 0 0 1.15em; font-size: 1.125rem; line-height: 1.7; color: var(--tn-ink); }
.tn-article h2 {
  font-family: var(--tn-font); font-stretch: 88%; font-weight: 650; letter-spacing: -0.01em;
  font-size: 1.625rem; line-height: 1.2; margin: 2.2em 0 .6em; color: var(--tn-ink); scroll-margin-top: 88px; text-wrap: balance;
}
.tn-article h3 {
  font-family: var(--tn-font); font-stretch: 94%; font-weight: 650; font-size: 1.25rem; line-height: 1.3;
  margin: 1.8em 0 .5em; color: var(--tn-ink); scroll-margin-top: 88px;
}
.tn-prose > h2:first-child, .tn-prose > div > h2:first-child { margin-top: 1.4em; }
.tn-article a { color: var(--tn-brand-strong); text-decoration: underline; text-decoration-color: rgba(24, 121, 78, .35); text-underline-offset: 3px; text-decoration-thickness: 1px; }
.tn-article a:hover { text-decoration-color: currentColor; text-decoration-thickness: 2px; }
.tn-article strong { font-weight: 600; }
.tn-article ul, .tn-article ol { margin: 0 0 1.3em; padding-left: 1.4em; font-size: 1.125rem; line-height: 1.7; }
.tn-article li { margin: 0 0 .55em; padding-left: .2em; }
.tn-article li::marker { color: var(--tn-muted); }
.tn-article ol li::marker { font-family: var(--tn-mono); font-size: .9em; font-weight: 500; color: var(--tn-brand-strong); }
.tn-article li > ul, .tn-article li > ol { margin-top: .5em; margin-bottom: .2em; }
.tn-article hr { border: 0; border-top: 1px solid var(--tn-line); margin: 2em 0; }
.tn-article code { font-family: var(--tn-mono); font-size: .92em; background: var(--tn-sunken); padding: 1px 5px; border-radius: var(--tn-r1); }
.tn-article section { margin: 0 0 2em; }
.tn-article section > h2:first-child { margin-top: 1.6em; }

.check-item { list-style: none; position: relative; padding-left: 1.8em; }
.check-item::before {
  content: ""; position: absolute; left: 0; top: .42em; width: 1.05em; height: 1.05em; border: 2px solid var(--tn-brand);
  border-radius: var(--tn-r1); background: var(--tn-surface);
}
.step-num {
  display: inline-flex; align-items: center; justify-content: center; width: 1.9rem; height: 1.9rem; margin-right: .4rem;
  background: var(--tn-brand-tint); color: var(--tn-brand-strong); border: 1px solid #b9d9c8; border-radius: var(--tn-r1);
  font-family: var(--tn-mono); font-weight: 500; font-size: .95rem; vertical-align: .05em;
}

/* Callouts */
.tn-callout {
  margin: 1.8em 0; padding: 18px 20px; background: var(--tn-surface); border: 1px solid var(--tn-line);
  border-left: 3px solid var(--tn-brand); border-radius: 0 var(--tn-r2) var(--tn-r2) 0;
}
.tn-callout > :last-child { margin-bottom: 0; }
.tn-callout p { font-size: 1.0625rem; line-height: 1.6; }
.tn-callout__title { margin: 0 0 6px !important; font-size: .9rem !important; font-weight: 600; color: var(--tn-brand-strong); text-transform: none; letter-spacing: 0; }

/* Tablas */
.tn-table-wrap { margin: 1.8em 0; overflow-x: auto; border: 1px solid var(--tn-line); border-radius: var(--tn-r2); background: var(--tn-surface); -webkit-overflow-scrolling: touch; }
.tn-article table { width: 100%; border-collapse: collapse; font-size: .95rem; line-height: 1.45; }
.tn-article :where(p, ul, ol) + table { margin-top: 1.8em; }
.tn-article th {
  text-align: left; font-weight: 600; color: var(--tn-ink); background: var(--tn-sunken);
  padding: 11px 14px; border-bottom: 1px solid var(--tn-line-strong); white-space: nowrap; vertical-align: bottom;
}
.tn-article td { padding: 11px 14px; border-bottom: 1px solid var(--tn-line); vertical-align: top; color: var(--tn-ink); font-variant-numeric: tabular-nums; }
.tn-article tr:last-child td { border-bottom: 0; }
.tn-article td.tn-num { font-family: var(--tn-mono); font-size: .9rem; white-space: nowrap; }
.tn-table-wrap + .tn-table-wrap { margin-top: 0; }

/* Figuras */
.tn-figure, .tn-article figure { margin: 1.8em 0; border: 1px solid var(--tn-line); border-radius: var(--tn-r3); overflow: hidden; background: var(--tn-surface); }
.tn-article figure img { width: 100%; max-height: 360px; object-fit: cover; }
.tn-article figcaption { padding: 10px 14px; font-size: .875rem; color: var(--tn-muted); border-top: 1px solid var(--tn-line); }

/* ---------- Tabla de contenidos ---------- */
.tn-toc { margin: 0 0 28px; font-size: .95rem; }
.tn-toc details { background: var(--tn-surface); border: 1px solid var(--tn-line); border-radius: var(--tn-r2); }
.tn-toc summary {
  display: flex; align-items: center; justify-content: space-between; min-height: 48px; padding: 0 16px; cursor: pointer;
  font-weight: 600; color: var(--tn-ink); list-style: none;
}
.tn-toc summary::-webkit-details-marker { display: none; }
.tn-toc summary::after {
  content: ""; width: 8px; height: 8px; border-right: 2px solid var(--tn-ink-2); border-bottom: 2px solid var(--tn-ink-2);
  transform: rotate(45deg) translateY(-2px); transition: transform var(--tn-dur) var(--tn-ease);
}
.tn-toc details[open] summary::after { transform: rotate(-135deg); }
.tn-toc ol { list-style: none; margin: 0; padding: 4px 16px 14px; counter-reset: toc; font-size: inherit; line-height: 1.4; }
.tn-toc li { margin: 0; padding: 0; counter-increment: toc; }
.tn-toc li::marker { content: none; }
.tn-toc a {
  display: flex; gap: 10px; align-items: baseline; min-height: 44px; padding: 10px 0; color: var(--tn-ink-2);
  text-decoration: none; border-top: 1px dotted var(--tn-line-strong);
}
.tn-toc li:first-child a { border-top: 0; }
.tn-toc a::before { content: counter(toc, decimal-leading-zero); font-family: var(--tn-mono); font-size: .78rem; color: var(--tn-muted); flex: none; }
.tn-toc a:hover { color: var(--tn-brand-strong); }

@media (min-width: 1100px) {
  .tn-article:has(.tn-toc) {
    max-width: 1000px; display: grid; grid-template-columns: 240px minmax(0, 680px); column-gap: 56px; row-gap: 0; padding-left: 32px; padding-right: 32px;
  }
  .tn-article:has(.tn-toc) > * { grid-column: 2; }
  .tn-article:has(.tn-toc) > .tn-toc { grid-column: 1; grid-row: 1 / span 40; align-self: start; position: sticky; top: 88px; margin: 6px 0 0; max-height: calc(100vh - 112px); overflow-y: auto; }
  .tn-toc details { background: transparent; border: 0; border-radius: 0; }
  .tn-toc summary { pointer-events: none; cursor: default; padding: 0 0 8px; min-height: 0; font-size: .875rem; color: var(--tn-muted); border-bottom: 1px solid var(--tn-line-strong); }
  .tn-toc summary::after { display: none; }
  .tn-toc ol { padding: 4px 0 0; }
  .tn-toc a { padding: 8px 0; min-height: 44px; font-size: .9rem; border-top: 0; }
}

/* ---------- Cierre: seguí leyendo + CTA ---------- */
.tn-related { margin: 56px 0 0; padding: 28px 0 0; border-top: 1px solid var(--tn-line-strong); }
.tn-related h2 { margin: 0 0 8px; font-size: 1.25rem; }
.tn-related ul { list-style: none; margin: 0; padding: 0; font-size: 1rem; }
.tn-related li { margin: 0; padding: 0; border-bottom: 1px dotted var(--tn-line-strong); }
.tn-related li:last-child { border-bottom: 0; }
.tn-related a {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 48px; padding: 10px 0;
  color: var(--tn-ink); font-weight: 500; line-height: 1.35; text-decoration: none;
}
.tn-related a::after { content: "→"; flex: none; color: var(--tn-brand); font-weight: 600; }
.tn-related a:hover { color: var(--tn-brand-strong); text-decoration: underline; text-underline-offset: 3px; }

.tn-cta {
  margin: 40px 0 0; padding: 28px 24px; background: var(--tn-surface); border: 1px solid var(--tn-line);
  border-left: 3px solid var(--tn-brand); border-radius: 0 var(--tn-r3) var(--tn-r3) 0; text-align: left;
}
.tn-cta h2 { margin: 0 0 8px; font-size: 1.375rem; }
.tn-cta p { margin: 0 0 20px; font-size: 1.0625rem; color: var(--tn-ink-2); max-width: 52ch; }
.tn-cta .btn { display: inline-flex; align-items: center; justify-content: center; padding: 0 22px; min-height: 48px; text-decoration: none; color: #fff; }
.tn-article .tn-cta a.btn:hover { color: #fff; }
@media (max-width: 520px) { .tn-cta .btn { width: 100%; } }
.tn-footnote { margin-top: 32px; font-size: .875rem; color: var(--tn-muted); }

/* ---------- Índice del blog ---------- */
.tn-index { max-width: 1200px; margin: 0 auto; padding: 36px 16px 0; }
@media (min-width: 600px) { .tn-index { padding: 48px 24px 0; } }
@media (min-width: 1200px) { .tn-index { padding: 64px 32px 0; } }
.tn-ihead { max-width: 720px; margin: 0 0 32px; }
.tn-ihead h1 {
  font-family: var(--tn-font); font-stretch: 88%; font-weight: 650; letter-spacing: -0.014em;
  font-size: clamp(2.2rem, 1.4rem + 3vw, 3.4rem); line-height: 1.05; margin: 0 0 14px; color: var(--tn-ink); text-wrap: balance;
}
.tn-ihead p { margin: 0; font-size: 1.1875rem; line-height: 1.55; color: var(--tn-ink-2); max-width: 56ch; }

.tn-tools { display: grid; gap: 14px; margin: 0 0 28px; padding: 0 0 20px; border-bottom: 1px solid var(--tn-line-strong); }
.tn-search { position: relative; display: block; max-width: 460px; }
.tn-search input[type="search"] {
  width: 100%; min-height: 48px; padding: 10px 14px 10px 44px; font-size: 1rem; color: var(--tn-ink);
  background: var(--tn-surface); border: 1px solid var(--tn-line-strong); border-radius: var(--tn-r2); box-shadow: none; -webkit-appearance: none; appearance: none;
}
.tn-search input[type="search"]::placeholder { color: var(--tn-muted); opacity: 1; }
.tn-search input[type="search"]:hover { border-color: var(--tn-ink-2); }
.tn-search svg { position: absolute; left: 14px; top: 50%; width: 20px; height: 20px; margin-top: -10px; color: var(--tn-muted); pointer-events: none; }
.tn-tools__row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 20px; }
.tn-count { margin: 0; font-family: var(--tn-mono); font-size: .875rem; color: var(--tn-muted); font-variant-numeric: tabular-nums; }
.tn-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-pill {
  min-height: 44px; padding: 0 16px; font: inherit; font-size: .95rem; font-weight: 500; color: var(--tn-ink-2);
  background: var(--tn-surface); border: 1px solid var(--tn-line-strong); border-radius: var(--tn-r2); cursor: pointer;
  transition: background-color var(--tn-dur) var(--tn-ease), border-color var(--tn-dur) var(--tn-ease), color var(--tn-dur) var(--tn-ease);
  text-transform: none; letter-spacing: 0;
}
.filter-pill:hover { border-color: var(--tn-ink-2); color: var(--tn-ink); }
.filter-pill.active { background: var(--tn-brand); border-color: var(--tn-brand); color: #fff; font-weight: 600; }
.filter-pill.active:hover { background: var(--tn-brand-strong); border-color: var(--tn-brand-strong); }

.tn-list { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .tn-list { grid-template-columns: repeat(2, 1fr); gap: 20px; } }
@media (min-width: 1024px) { .tn-list { grid-template-columns: repeat(3, 1fr); } }
.blog-card {
  display: flex; flex-direction: column; gap: 8px; padding: 20px; background: var(--tn-surface); border: 1px solid var(--tn-line);
  border-radius: var(--tn-r3); color: var(--tn-ink); text-decoration: none; min-height: 44px;
  transition: border-color var(--tn-dur) var(--tn-ease), box-shadow var(--tn-dur) var(--tn-ease);
}
.blog-card:hover { border-color: var(--tn-brand); box-shadow: var(--tn-shadow); }
.blog-card__cat { font-size: .875rem; font-weight: 500; color: var(--tn-muted); }
.blog-card__title { margin: 0; font-size: 1.125rem; font-weight: 600; line-height: 1.3; letter-spacing: -0.003em; color: var(--tn-ink); text-wrap: balance; }
.blog-card:hover .blog-card__title { color: var(--tn-brand-strong); }
.blog-card__excerpt { margin: 0; font-size: .95rem; line-height: 1.55; color: var(--tn-ink-2); }
.blog-card time { margin-top: auto; padding-top: 8px; font-size: .8125rem; color: var(--tn-muted); font-variant-numeric: tabular-nums; }
.blog-card--lead { background: var(--tn-surface); border-left: 3px solid var(--tn-brand); }
@media (min-width: 640px) {
  .blog-card--lead { grid-column: 1 / -1; padding: 32px; gap: 12px; }
  .blog-card--lead .blog-card__title { font-family: var(--tn-font); font-stretch: 88%; font-weight: 650; font-size: clamp(1.6rem, 1.1rem + 1.8vw, 2.25rem); line-height: 1.1; letter-spacing: -0.012em; max-width: 24ch; }
  .blog-card--lead .blog-card__excerpt { font-size: 1.125rem; max-width: 56ch; }
}
.tn-empty { padding: 48px 0; color: var(--tn-ink-2); font-size: 1.0625rem; max-width: 52ch; }

.tn-index-cta {
  margin: 56px 0 0; padding: 28px 24px; background: var(--tn-surface); border: 1px solid var(--tn-line);
  border-left: 3px solid var(--tn-brand); border-radius: 0 var(--tn-r3) var(--tn-r3) 0;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 32px;
}
.tn-index-cta h2 { margin: 0 0 6px; font-family: var(--tn-font); font-stretch: 88%; font-weight: 650; font-size: 1.375rem; line-height: 1.2; }
.tn-index-cta p { margin: 0; color: var(--tn-ink-2); max-width: 52ch; }
.tn-index-cta .btn { display: inline-flex; align-items: center; justify-content: center; padding: 0 22px; min-height: 48px; text-decoration: none; color: #fff; }
.tn-index-note { margin: 32px 0 0; padding: 20px 0 0; border-top: 1px solid var(--tn-line-strong); font-size: .9rem; color: var(--tn-muted); max-width: 72ch; }
.tn-index-note a { color: var(--tn-brand-strong); }

/* ---------- Movimiento ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blog-card, .filter-pill, .tn-toc summary::after { transition: none; }
}
@media print {
  .tn-bhead, .tn-bfoot, .tn-toc, .tn-cta, .tn-tabbar { display: none; }
  body.tn-blog { background: #fff; }
}

/* Caja de enlace a herramientas (calculadora / inmobiliarias) */
.tn-calc-box { max-width: 680px; margin: 32px auto 8px; padding: 16px 18px; background: var(--tn-surface, #fff); border: 1px dashed var(--tn-line-strong, #bfcac2); border-left: 3px solid var(--tn-hito, #b8431a); border-radius: 6px; }
.tn-calc-box p { margin: 0 0 8px; color: var(--tn-ink-2, #3a4740); line-height: 1.55; }
.tn-bfoot__legal a { color: #e1ebe5; text-decoration: underline; text-underline-offset: 3px; }