/* Precio por Metro: papel de plano, lápiz de carpintero y cinta métrica. */
:root {
  --cemento: #e6e9ec;
  --papel: #ffffff;
  --tinta: #16212b;
  --tinta-2: #4a5662;
  --linea: #cdd3d9;
  --trazo: #ffc400;
  --nivel: #2457d6;
  --ladrillo: #b3402a;
  --wood: #d9bf9a;
  --seam: #a98b64;
  --tile: #f4f6f7;
  --grout: #9aa4ad;
  --logo-bg: #16212b;
  --logo-fg: #ffc400;
  --radius: 10px;
  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --text: "Newsreader", Georgia, "Times New Roman", serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --cemento: #10161c;
    --papel: #18212a;
    --tinta: #e8ecef;
    --tinta-2: #9aa6b2;
    --linea: #2c3844;
    --nivel: #8fb0ff;
    --ladrillo: #ff8a73;
    --wood: #6f5a40;
    --seam: #3d3224;
    --tile: #2b3641;
    --grout: #10161c;
    --logo-bg: #ffc400;
    --logo-fg: #16212b;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }
body {
  margin: 0; background: var(--cemento); color: var(--tinta);
  font: 400 1.0625rem/1.55 var(--display); font-optical-sizing: auto;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--nivel); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--nivel); outline-offset: 2px; border-radius: 4px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: .5rem; top: -4rem; background: var(--tinta); color: var(--cemento); padding: .6rem 1rem; border-radius: 6px; z-index: 20; }
.skip:focus { top: .5rem; }
.wrap { width: min(72rem, 100% - 2rem); margin-inline: auto; }

/* Cabecera */
.site-header { border-bottom: 1px solid var(--linea); background: var(--cemento); position: sticky; top: 0; z-index: 10; }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 3.75rem; flex-wrap: wrap; padding-block: .4rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; color: var(--tinta); text-decoration: none; font-weight: 800; font-size: 1.25rem; letter-spacing: -.01em; font-stretch: 85%; }
.brand .mark { width: 2rem; height: 2rem; flex: none; }
.brand .logo-bg { fill: var(--logo-bg); }
.brand .logo-fg { fill: none; stroke: var(--logo-fg); stroke-linecap: round; }
.site-header nav { display: flex; gap: .25rem; flex-wrap: wrap; }
.menu { position: relative; }
.menu summary { list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: .4rem; color: var(--tinta); padding: .45rem .8rem; border-radius: 999px; font-weight: 600; font-size: .98rem; user-select: none; }
.menu summary::-webkit-details-marker { display: none; }
.menu summary::after { content: ""; width: .45rem; height: .45rem; border: solid currentColor; border-width: 0 2px 2px 0; transform: rotate(45deg) translateY(-2px); transition: transform .15s; }
.menu[open] summary::after { transform: rotate(-135deg) translateY(-2px); }
.menu summary:hover { background: color-mix(in srgb, var(--tinta) 8%, transparent); }
.menu.has-current summary { background: var(--tinta); color: var(--cemento); }
.menu-list { position: absolute; right: 0; top: calc(100% + .35rem); min-width: 14rem; display: grid; padding: .4rem; background: var(--papel); border: 1px solid var(--linea); border-radius: var(--radius); box-shadow: 0 10px 30px rgb(0 0 0 / .12); z-index: 12; }
.menu-list a { color: var(--tinta); text-decoration: none; padding: .55rem .75rem; border-radius: 6px; font-weight: 600; }
.menu-list a:hover { background: color-mix(in srgb, var(--tinta) 8%, transparent); }
.menu-list a[aria-current="page"] { background: var(--trazo); color: #16212b; }
@media (max-width: 40rem) { .menu-list { left: 0; right: auto; } .menu:last-child .menu-list { left: auto; right: 0; } }

/* Titulares */
h1, h2, h3 { font-family: var(--display); line-height: 1.08; letter-spacing: -.02em; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); font-weight: 800; font-stretch: 80%; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; font-stretch: 88%; }
h3 { font-size: 1.2rem; font-weight: 700; }
.lead { font-family: var(--text); font-size: 1.3rem; line-height: 1.45; color: var(--tinta-2); max-width: 36rem; margin: 1rem 0 0; }

/* Portada */
.hero { padding-block: clamp(1.75rem, 5vw, 4rem); }
.hero-grid { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 62rem) { .hero-grid { grid-template-columns: 1fr 1.05fr; gap: 3.5rem; } }
.hero-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.75rem; }

.btn { display: inline-flex; align-items: center; min-height: 2.75rem; padding: .55rem 1.2rem; border-radius: 999px; font: 700 1rem var(--display); text-decoration: none; border: 2px solid var(--tinta); color: var(--tinta); background: transparent; cursor: pointer; }
.btn:hover { background: color-mix(in srgb, var(--tinta) 8%, transparent); }
.btn.primary { background: var(--trazo); border-color: var(--trazo); color: #16212b; }
.btn.primary:hover { background: color-mix(in srgb, var(--trazo) 88%, #fff); }
.ghost { background: none; border: 0; color: var(--nivel); font: 600 .95rem var(--display); cursor: pointer; padding: .4rem .5rem; text-decoration: underline; text-underline-offset: .2em; }

/* Panel y dibujo */
.panel { background: var(--papel); border: 1px solid var(--linea); border-radius: var(--radius); padding: 1.1rem; }
.drawing { color: var(--tinta); background:
  linear-gradient(var(--linea) 1px, transparent 1px) 0 0 / 100% 20px,
  linear-gradient(90deg, var(--linea) 1px, transparent 1px) 0 0 / 20px 100%;
  background-color: var(--papel); border-radius: calc(var(--radius) - 2px); border: 1px solid var(--linea); aspect-ratio: 4 / 3; }
.drawing svg { width: 100%; height: 100%; }
.drawing .floor { fill: var(--papel); }
.drawing .paint { stroke-linejoin: miter; }
.drawing .wall-edge { stroke: var(--tinta); stroke-width: 1.5; }
.drawing .gap { fill: var(--papel); }
.drawing .door { fill: none; stroke: var(--tinta); stroke-width: 1.5; }
.drawing .win { fill: var(--papel); stroke: var(--tinta); stroke-width: 1; }
.drawing .win-line { stroke: var(--nivel); stroke-width: 2; fill: none; }
.drawing .wood { fill: var(--wood); }
.drawing .seam { stroke: var(--seam); stroke-width: 1; }
.drawing .grout { fill: var(--grout); }
.drawing .tile { fill: var(--tile); }
.drawing .dim { color: var(--tinta-2); }
.drawing .dim-label { font: 600 12px var(--display); color: var(--tinta); fill: var(--tinta); }
@keyframes draw { to { stroke-dashoffset: 0; } }
.drawing.intro .draw { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw 1.1s cubic-bezier(.3, .6, .2, 1) forwards; }

.hero-panel { display: grid; gap: 1rem; }
.hero-panel .field { margin-bottom: 0; }
.hero-panel .result-list { margin-top: 0; }
.hero-panel .result-list dd { font-size: 1.25rem; }
.hero-panel .note { margin: 0; }

/* Campos */
.field { margin: 0 0 1.1rem; border: 0; padding: 0; min-width: 0; }
.field label, .field legend { display: block; font-weight: 600; margin-bottom: .3rem; padding: 0; }
.field-row { display: flex; align-items: center; gap: .5rem; }
input[type=number], select {
  width: 100%; min-height: 2.9rem; padding: .5rem .75rem; font: 600 1.1rem var(--display);
  color: var(--tinta); background: var(--cemento); border: 2px solid var(--linea); border-radius: 8px;
  font-variant-numeric: tabular-nums;
}
input[type=number]:hover, select:hover { border-color: var(--tinta-2); }
input[type=number]:focus-visible, select:focus-visible { border-color: var(--nivel); outline-offset: 0; }
.field-row input[type=number] { max-width: 9rem; }
.unit { color: var(--tinta-2); font-weight: 600; min-width: 2rem; }
.hint { margin: .35rem 0 0; color: var(--tinta-2); font-size: .92rem; line-height: 1.4; }
input[type=range] { width: 100%; margin: .5rem 0 0; accent-color: var(--trazo); height: 1.5rem; }
.field.check label { display: flex; gap: .6rem; align-items: center; font-weight: 600; cursor: pointer; }
input[type=checkbox], input[type=radio] { width: 1.3rem; height: 1.3rem; accent-color: var(--nivel); }
.pair { display: grid; gap: 0 1rem; grid-template-columns: 1fr 1fr; }
.swatch-row { display: flex; gap: .5rem; flex-wrap: wrap; }
.swatch { position: relative; cursor: pointer; margin: 0; }
.swatch input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.swatch span:not(.sr) { display: block; width: 2.4rem; height: 2.4rem; border-radius: 50%; background: var(--c); border: 2px solid var(--linea); }
.swatch input:checked + span { box-shadow: 0 0 0 3px var(--papel), 0 0 0 5px var(--tinta); }
.swatch input:focus-visible + span { outline: 3px solid var(--nivel); outline-offset: 4px; }
details.more { border-top: 1px solid var(--linea); padding-top: .9rem; margin-top: .4rem; }
details.more summary { font-weight: 700; cursor: pointer; margin-bottom: .9rem; }

/* Estancias */
.room { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem .75rem; align-items: end; border: 1px solid var(--linea); border-radius: 8px; padding: .8rem; margin-bottom: .7rem; }
.room-name { grid-column: 1 / -1; font-weight: 700; }
.room label { font-weight: 600; font-size: .95rem; display: block; }
.room input { margin-top: .2rem; }
.room [data-remove] { justify-self: start; grid-column: 1 / -1; }

/* Calculadora */
.calc-head { padding-block: 1.75rem .75rem; }
.calc-head .lead { font-size: 1.2rem; }
.calc-layout { display: grid; gap: 1.25rem; padding-bottom: 2rem; align-items: start; }
@media (min-width: 62rem) {
  .calc-layout { grid-template-columns: minmax(0, 26rem) minmax(0, 1fr); gap: 2rem; }
  .results { position: sticky; top: 5rem; }
}
.results { display: grid; gap: 1rem; }
.primary { display: flex; align-items: baseline; gap: .6rem 1rem; flex-wrap: wrap; }
.big { font: 800 clamp(3rem, 8vw, 4.75rem)/1 var(--display); font-stretch: 78%; font-variant-numeric: tabular-nums; letter-spacing: -.03em; background: linear-gradient(to top, var(--trazo) 0 .24em, transparent .24em); padding-inline: .06em; }
.big-unit { font: 600 1.15rem var(--display); color: var(--tinta-2); }
.verdict { margin: .5rem 0 0; font-weight: 600; }
.result-list { margin: 1rem 0 0; display: grid; }
.result-list > div { display: flex; justify-content: space-between; gap: 1rem; padding: .6rem 0; border-top: 1px solid var(--linea); }
.result-list dt { color: var(--tinta-2); }
.result-list dd { margin: 0; font-weight: 700; text-align: right; font-variant-numeric: tabular-nums; }
.result-list [hidden] { display: none; }
.note { margin: .8rem 0 0; font-size: .92rem; color: var(--tinta-2); line-height: 1.45; }

/* Barra de resultado en móvil */
.result-bar { display: none; }
@media (max-width: 61.99rem) {
  .result-bar { display: flex; align-items: baseline; gap: .6rem; position: fixed; inset: auto 0 0 0; z-index: 9; padding: .65rem 1rem calc(.65rem + env(safe-area-inset-bottom)); background: var(--tinta); color: var(--cemento); }
  .result-bar .n { font: 800 1.9rem/1 var(--display); font-stretch: 80%; font-variant-numeric: tabular-nums; color: var(--trazo); }
  .result-bar .t { font-weight: 600; }
  body.calc .site-footer { padding-bottom: 5rem; }
}

/* Listas y contenido */
.section { padding-block: clamp(2rem, 5vw, 3.5rem); }
.section + .section { border-top: 1px solid var(--linea); }
.tools { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; }
.tools a { display: grid; gap: .2rem 2rem; padding: 1.2rem 0; border-top: 1px solid var(--linea); text-decoration: none; color: var(--tinta); }
.tools li:last-child a { border-bottom: 1px solid var(--linea); }
@media (min-width: 46rem) { .tools a { grid-template-columns: 16rem 1fr auto; align-items: baseline; } }
.tools strong { font: 700 1.4rem var(--display); font-stretch: 88%; }
.tools span { color: var(--tinta-2); }
.tools em { font-style: normal; font-weight: 700; color: var(--nivel); text-decoration: underline; text-underline-offset: .2em; }
.tools a:hover strong { text-decoration: underline; text-decoration-color: var(--trazo); text-decoration-thickness: 4px; text-underline-offset: .15em; }

.prose { font-family: var(--text); font-size: 1.2rem; line-height: 1.6; max-width: 40rem; }
.prose h2, .prose h3 { font-family: var(--display); margin: 2.2rem 0 .7rem; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.1rem; }
.prose li { margin-bottom: .4rem; }
.prose table { width: 100%; border-collapse: collapse; font: 400 1rem var(--display); margin: 0 0 1.2rem; }
.prose th, .prose td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid var(--linea); }
.prose th { font-weight: 700; }
.prose code, .formula { font: 600 1rem var(--display); background: color-mix(in srgb, var(--tinta) 8%, transparent); padding: .1em .4em; border-radius: 4px; }
.formula { display: block; padding: .8rem 1rem; margin: 0 0 1.1rem; overflow-x: auto; }
.page-body { padding-block: clamp(1.75rem, 5vw, 3.5rem); }
.page-body h1 { margin-bottom: 1.5rem; font-size: clamp(2rem, 4.6vw, 3rem); }

.faq details { border-top: 1px solid var(--linea); padding: .9rem 0; font-family: var(--display); }
.faq details:last-child { border-bottom: 1px solid var(--linea); }
.faq summary { font-weight: 700; font-size: 1.1rem; cursor: pointer; }
.faq p { margin: .6rem 0 0; font-family: var(--text); font-size: 1.15rem; max-width: 40rem; }
.related { list-style: none; padding: 0; display: flex; gap: .6rem; flex-wrap: wrap; margin: 0; }
.related a { display: inline-block; padding: .5rem 1rem; border: 2px solid var(--linea); border-radius: 999px; color: var(--tinta); font-weight: 600; text-decoration: none; }
.related a:hover { border-color: var(--tinta); }

/* Pie */
.site-footer { border-top: 1px solid var(--linea); margin-top: 2rem; padding-block: 2rem 2.5rem; color: var(--tinta-2); font-size: .95rem; }
.foot-note { max-width: 44rem; margin: 0 0 1rem; }
.foot-links { list-style: none; padding: 0; margin: 0 0 1rem; display: flex; gap: .4rem 1.4rem; flex-wrap: wrap; }
.foot-links a { color: var(--tinta); }
.copy { margin: 0; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .drawing.intro .draw { stroke-dasharray: none; stroke-dashoffset: 0; }
}

/* Mobiliario en los dibujos de coste */
.drawing .fix { fill: var(--papel); stroke: var(--tinta); stroke-width: 1.5; }
.drawing .counter { fill: var(--wood); stroke: var(--seam); stroke-width: 1.5; }
.drawing .plan-area { font: 800 26px var(--display); fill: var(--tinta); }
.big.range { font-size: clamp(2.2rem, 6vw, 3.4rem); }
.breakdown { margin-top: 1rem; }
.breakdown h3 { font-size: 1rem; margin-bottom: .2rem; }
.breakdown .result-list { margin-top: .2rem; }
.section h2.sub { margin-top: 2.5rem; }

/* Ventana */
.drawing .frame { fill: var(--tinta); fill-opacity: .12; }
.drawing .glass { fill: var(--nivel); fill-opacity: .14; stroke: var(--tinta); stroke-width: 1.5; }
.drawing .glass.sash { fill-opacity: .24; }
.drawing .inner { stroke: var(--tinta); stroke-width: 1; }
.drawing .open-sym { fill: none; stroke: var(--tinta); stroke-width: 1.5; }
.drawing .open-sym.dashed { stroke-dasharray: 5 4; }
.drawing .glint { stroke: var(--papel); stroke-width: 4; stroke-linecap: round; fill: none; opacity: .8; }
.drawing .shutter { fill: var(--wood); stroke: var(--seam); stroke-width: 1.5; }
.drawing .slat { stroke: var(--seam); stroke-width: 1; }

/* Persiana */
.drawing .guide { fill: var(--tinta); fill-opacity: .35; }
.drawing .slats-bg { fill: var(--wood); }
.drawing .slat-lines path { stroke: var(--seam); stroke-width: 1; }
.drawing .bar { fill: var(--tinta); fill-opacity: .8; }
.drawing .strap { fill: var(--trazo); stroke: var(--tinta); stroke-width: 1; }
.drawing .crack { stroke: var(--ladrillo); stroke-width: 3; stroke-dasharray: 8 5; fill: none; }

/* Guías */
.nav-link { color: var(--tinta); text-decoration: none; padding: .45rem .8rem; border-radius: 999px; font-weight: 600; font-size: .98rem; }
.nav-link:hover { background: color-mix(in srgb, var(--tinta) 8%, transparent); }
.nav-link.has-current { background: var(--tinta); color: var(--cemento); }
.byline { font: 500 .95rem var(--display); color: var(--tinta-2); margin: -.6rem 0 1.5rem; }
.cta { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; background: var(--papel); border: 1px solid var(--linea); border-left: 6px solid var(--trazo); border-radius: var(--radius); padding: 1rem 1.2rem; margin: 1.8rem 0; font-family: var(--display); }
.cta p { margin: 0; font-weight: 600; max-width: 28rem; }
.article h2 { font-size: 1.6rem; }
.article .lead { font-size: 1.35rem; margin: 0 0 1.5rem; }

/* Publicidad: espacio reservado para que la página no salte al cargar el anuncio */
.ad { max-width: 50rem; margin: 2.2rem auto; }
.ad-label { display: block; font: 600 .8rem var(--display); color: var(--tinta-2); margin-bottom: .35rem; }
.ad-box { min-height: 280px; display: grid; place-items: center; overflow: hidden; }
.ad-preview { border: 2px dashed var(--linea); border-radius: var(--radius); color: var(--tinta-2); font: 600 1rem var(--display); background: color-mix(in srgb, var(--tinta) 4%, transparent); }

/* Anuncios laterales: viven en el margen vacío, solo si cabe sin tocar el contenido */
.rail { display: none; position: fixed; top: 6rem; width: var(--rail-w, 160px); z-index: 2; }
.rail-box { min-height: 600px; display: grid; place-items: center; overflow: hidden; }
.rail-left { right: calc(50% + 36rem + 1.5rem); }
.rail-right { left: calc(50% + 36rem + 1.5rem); }
@media (min-width: 1540px) and (min-height: 700px) { .rail { display: block; --rail-w: 160px; } }
@media (min-width: 1840px) and (min-height: 700px) { .rail { --rail-w: 300px; } }

/* Banner superior: poco alto y separado del menú para evitar clics por error */
.ad-top { max-width: 728px; margin: 1.25rem auto .5rem; }
.ad-top .ad-box { min-height: 100px; }
@media (min-width: 48rem) { .ad-top .ad-box { min-height: 90px; } }

/* Plato de ducha */
.drawing .shower-wall { fill: none; stroke: var(--tinta); stroke-width: 7; stroke-linejoin: miter; }
.drawing .glass-line { stroke: var(--nivel); stroke-width: 4; fill: none; stroke-linecap: round; }
.drawing .tray { fill-opacity: 1; }