/* ==========================================================================
   CAMALOTE · Carta náutica del Paraná
   El sitio es una carta: se baja por el río. Ver DESIGN.md.
   Pieza comprometida con un solo mundo: oscuro, drenched. Todo pintado.
   ========================================================================== */

:root{
  color-scheme: dark;

  --agua:        #0A1518;
  --agua-honda:  #04090B;
  --agua-luz:    #16282C;
  --arena:       #C8AE80;
  --arena-sombra:#A98F63;
  --tinta:       #2A2114;
  --tinta-suave: #4C3C26;
  --sonda:       #C4482F;
  --sonda-tinta: #7C2515;   /* rojo de carta que lleva texto sobre arena */
  --sonda-clara: #D96047;   /* el mismo rojo, cuando el texto va sobre el agua */
  --boya:        #2F8A62;
  --boya-txt:    #3AA075;
  --luz:         #E0A64A;
  --luz-alta:    #F3CB84;
  --hueso:       #E9E2D2;
  --hueso-tenue: #B9B0A0;
  --linea:       #22363B;

  --display: "Spectral", Georgia, "Times New Roman", serif;
  --sans:    "IBM Plex Sans Condensed", "Segoe UI", system-ui, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "Courier New", monospace;
  --lapiz:   "Caveat", "Segoe Script", cursive;

  /* deceleración exponencial: la plomada frena, no rebota */
  --e:  cubic-bezier(.16,.84,.24,1);
  --e2: cubic-bezier(.06,.92,.2,1);

  --col: 1200px;
  --cta-alto: 62px;   /* aire para que la pastilla fija no toque el pie */
}

*, *::before, *::after{ box-sizing: border-box; }

html{ -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior: auto; } }

body{
  margin: 0;
  padding-bottom: var(--cta-alto);   /* el botón fijo no tapa nada */
  background: var(--agua);
  color: var(--hueso);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1,h2,h3{ margin: 0; font-weight: 400; text-wrap: balance; }
p{ margin: 0 0 .9em; }
a{ color: inherit; }
img{ max-width: 100%; display: block; }

.ancho{ width: 100%; max-width: var(--col); margin: 0 auto; padding: 0 22px; }

:is(a,button,input,select,textarea,summary):focus-visible{
  outline: 2px solid var(--luz); outline-offset: 3px;
}

.saltar{
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--luz); color: var(--agua-honda);
  padding: 12px 18px; font-family: var(--sans); font-weight: 600;
}
.saltar:focus{ left: 8px; top: 8px; }

/* ==========================================================================
   barra
   ========================================================================== */
.barra{
  position: sticky; top: 0; z-index: 40;
  background: rgba(4,9,11,.95);
  border-bottom: 1px solid var(--linea);
}
.barra-in{
  width: 100%; max-width: var(--col); margin: 0 auto;
  padding: 9px 22px; display: flex; align-items: center; gap: 12px;
}
.marca{ display: inline-flex; align-items: baseline; gap: 8px; text-decoration: none; flex: none; }
.marca-sig{ color: var(--boya-txt); font-size: 18px; line-height: 1; }
.marca-txt{ font-family: var(--display); font-size: 19px; color: var(--hueso); }

.hojas{ display: none; margin-left: auto; gap: 2px; }
.hojas a{ position: relative; display: flex; flex-direction: column; padding: 5px 11px; text-decoration: none; }
.hojas a b{
  font-family: var(--mono); font-size: 9.5px; letter-spacing: .1em;
  color: var(--luz); font-weight: 500; opacity: .75;
}
.hojas a span{ font-size: 12.5px; color: var(--hueso-tenue); }
.hojas a::after{
  content: ""; position: absolute; left: 11px; right: 11px; bottom: 0; height: 1px;
  background: var(--luz); transform: scaleX(0); transform-origin: left;
  transition: transform .34s var(--e2);
}
.hojas a:hover::after, .hojas a.on::after{ transform: scaleX(1); }
.hojas a.on span{ color: var(--hueso); }

/* la lectura de sonda: en qué punto del río vas */
.sonda-barra{
  display: none; margin: 0 0 0 14px; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px; color: var(--hueso-tenue);
  padding: 3px 10px; border: 1px solid var(--linea); border-radius: 2px;
}
.sb-km{ color: var(--luz); font-variant-numeric: tabular-nums; }
.sb-sep{ width: 10px; height: 1px; background: var(--sonda); }
.sb-prof{ font-variant-numeric: tabular-nums; }

.reservar{
  margin-left: auto; flex: none; position: relative; overflow: hidden;
  background: var(--sonda); color: #FFFFFF; text-decoration: none;
  padding: 9px 16px; border-radius: 2px;
  font-family: var(--sans); font-weight: 600; font-size: 13px;
  letter-spacing: .05em; text-transform: uppercase;
}
.sonda-barra + .reservar{ margin-left: 12px; }
.reservar::before{
  content: ""; position: absolute; inset: 0; background: #93301C;
  transform: scaleX(0); transform-origin: left; transition: transform .38s var(--e2);
}
.reservar:hover::before{ transform: scaleX(1); }
.reservar span{ position: relative; z-index: 1; }

.calado{ height: 2px; background: #0F2126; }
.calado i{ display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--boya-txt), var(--luz)); }

/* botón fijo del móvil: entra cuando dejás la portada */
.reservar-fijo{
  position: fixed; right: 14px; bottom: 14px; z-index: 45;
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--sonda); color: #FFFFFF; text-decoration: none;
  padding: 12px 18px; border-radius: 999px;
  font-family: var(--sans); font-weight: 600; font-size: 13px;
  letter-spacing: .07em; text-transform: uppercase;
  box-shadow: 0 14px 34px -10px rgba(0,0,0,.8);
  transform: translateY(190%); transition: transform .55s var(--e2), opacity .3s var(--e);
}
.reservar-fijo::before{
  content: ""; width: 7px; height: 7px; border-radius: 50%; background: #FFD9A8;
  animation: latir 2.6s var(--e) infinite;
}
@keyframes latir{ 0%,70%,100%{ transform: scale(1); opacity: .9; } 82%{ transform: scale(1.7); opacity: .35; } }
.reservar-fijo.se-ve{ transform: none; }
.reservar-fijo.al-fondo{ transform: translateY(190%); }

/* ==========================================================================
   portada
   ========================================================================== */
.tapa{
  position: relative; isolation: isolate;
  min-height: calc(100svh - 54px);
  display: flex; flex-direction: column; justify-content: center;
  padding: 34px 0 62px; overflow: hidden;
}
.tapa-foto{ position: absolute; inset: -4%; margin: 0; z-index: -2; background: var(--agua-honda); }
.tapa-foto img{
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transform: scale(1.16);
  transition: opacity 1.8s var(--e), transform 3.6s var(--e);
}
.tapa-foto img.on{ opacity: .66; transform: scale(1.01); }
.tapa-agua{
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(4,9,11,.92) 0%, rgba(4,9,11,.36) 30%, rgba(4,9,11,.70) 66%, var(--agua) 100%),
    linear-gradient(90deg, rgba(4,9,11,.82) 0%, rgba(4,9,11,.16) 60%, rgba(4,9,11,.5) 100%);
}

.tapa-in{ width: 100%; max-width: var(--col); margin: 0 auto; padding: 0 22px; display: grid; gap: 22px; }

.carta-id{
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--luz); margin: 0 0 14px;
}
.carta-id i{ width: 14px; height: 1px; background: var(--sonda); flex: none; }

.tapa-nombre{
  font-family: var(--display); font-weight: 300;
  font-size: clamp(2.9rem, 13vw, 7rem);
  line-height: .95; letter-spacing: -.022em; color: var(--hueso);
}
.tapa-bajada{
  font-family: var(--display); font-style: italic; font-weight: 300;
  font-size: clamp(1.02rem, 4.1vw, 1.5rem); color: var(--luz-alta); margin: 4px 0 0;
}
.tapa-linea{
  font-family: var(--mono); font-size: 11px; letter-spacing: .07em;
  color: var(--hueso-tenue); margin: 16px 0 0; padding-top: 13px; border-top: 1px solid var(--linea);
}
.tapa-claim{
  font-family: var(--display); font-size: clamp(1rem, 3.6vw, 1.2rem);
  line-height: 1.45; color: var(--hueso); max-width: 33ch; margin: 12px 0 0;
}
.tapa-btns{ display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }

.btn{
  position: relative; overflow: hidden; display: inline-block; text-decoration: none;
  padding: 12px 20px; border-radius: 2px;
  font-family: var(--sans); font-weight: 600; font-size: 13px;
  letter-spacing: .07em; text-transform: uppercase;
  border: 1px solid #2E464C; color: var(--hueso); background: rgba(10,21,24,.6);
  transition: border-color .28s var(--e), color .28s var(--e);
}
.btn span{ position: relative; z-index: 1; }
.btn::before{
  content: ""; position: absolute; inset: 0; background: var(--luz);
  transform: translateY(101%); transition: transform .42s var(--e2);
}
.btn:hover{ border-color: var(--luz); color: var(--agua-honda); }
.btn:hover::before{ transform: none; }
.btn-fuerte{ background: var(--sonda); border-color: var(--sonda); color: #FFFFFF; }
.btn-fuerte::before{ background: #93301C; }
.btn-fuerte:hover{ border-color: #93301C; color: #FFFFFF; }

.tapa-lado{ display: flex; flex-direction: column; gap: 14px; }
.tapa-datos{ display: flex; flex-wrap: wrap; margin: 0; border-top: 1px solid var(--linea); padding-top: 12px; }
.tapa-datos > div{ padding-right: 20px; margin-right: 20px; border-right: 1px solid var(--linea); }
.tapa-datos > div:last-child{ border-right: 0; margin-right: 0; padding-right: 0; }
.tapa-datos dt{
  font-family: var(--sans); font-size: 9.5px; letter-spacing: .15em;
  text-transform: uppercase; color: var(--hueso-tenue);
}
.tapa-datos dd{ margin: 2px 0 0; font-family: var(--mono); font-size: 14px; color: var(--hueso); }
.tapa-datos .abierto{ color: var(--boya-txt); }

.tapa-rio{
  display: grid; grid-template-columns: auto auto 1fr; align-items: baseline; gap: 4px 8px;
  margin: 0; padding: 13px 15px;
  border: 1px solid var(--linea); border-left: 3px solid var(--boya);
  background: rgba(4,9,11,.66); width: fit-content; max-width: 100%;
}
.tapa-rio-et{
  grid-column: 1 / -1; font-family: var(--sans); font-size: 9.5px;
  letter-spacing: .15em; text-transform: uppercase; color: var(--hueso-tenue);
}
.tapa-rio-n{
  font-family: var(--mono); font-size: 32px; color: var(--luz); line-height: 1;
  font-variant-numeric: tabular-nums;
}
.tapa-rio-u{ font-family: var(--mono); font-size: 13px; color: var(--hueso-tenue); }
.tapa-rio-est{
  justify-self: start; font-family: var(--sans); font-size: 10.5px;
  letter-spacing: .11em; text-transform: uppercase; color: var(--boya-txt);
  border: 1px solid #1F4A3A; padding: 2px 8px;
}
.tapa-rio-leido{ grid-column: 1 / -1; font-family: var(--mono); font-size: 10.5px; color: var(--hueso-tenue); }

.bajar{
  position: absolute; left: 22px; bottom: 20px;
  display: inline-flex; align-items: center; gap: 10px; text-decoration: none;
  color: var(--hueso-tenue); font-family: var(--sans); font-size: 10.5px;
  letter-spacing: .15em; text-transform: uppercase;
}
.bajar i{ width: 1px; height: 24px; background: var(--luz); display: block; transform-origin: top; }
.bajar:hover{ color: var(--luz); }

/* ==========================================================================
   índice
   ========================================================================== */
.indice{ background: var(--agua-honda); padding: 42px 0; border-bottom: 1px solid var(--linea); }
.indice-t{
  font-family: var(--sans); font-size: 10px; letter-spacing: .22em;
  text-transform: uppercase; color: var(--luz); margin-bottom: 14px;
}
.indice-l{ list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--linea); }
.indice-l li{ position: relative; }
.indice-l a{
  position: relative; display: grid; grid-template-columns: 42px 1fr auto;
  align-items: baseline; gap: 2px 12px; padding: 13px 0; text-decoration: none;
  border-bottom: 1px solid var(--linea);
}
.indice-l a::before{
  content: ""; position: absolute; left: -22px; right: -22px; top: 0; bottom: 0;
  background: #0B1C21; transform: scaleX(0); transform-origin: left; z-index: -1;
  transition: transform .42s var(--e2);
}
.indice-l a:hover::before{ transform: scaleX(1); }
.indice-l b{ font-family: var(--mono); font-size: 11px; color: var(--sonda-clara); font-weight: 500; }
.indice-l .i-n{
  font-family: var(--display); font-size: 19px; color: var(--hueso);
  transition: transform .42s var(--e2), color .3s var(--e);
}
.indice-l a:hover .i-n{ transform: translateX(7px); color: var(--luz-alta); }
.indice-l .i-d{ grid-column: 2; font-size: 12.5px; color: var(--hueso-tenue); line-height: 1.3; }
.indice-l i{ grid-row: 1; grid-column: 3; font-family: var(--mono); font-style: normal; font-size: 11px; color: var(--hueso-tenue); }
.indice-pie{
  display: flex; flex-wrap: wrap; gap: 5px 22px; margin: 16px 0 0;
  font-family: var(--mono); font-size: 11px; color: var(--hueso-tenue);
}

/* ==========================================================================
   hojas
   ========================================================================== */
.hoja{ padding: 56px 0; position: relative; }
.hoja--agua{ background: var(--agua); color: var(--hueso); }
.hoja--arena{
  background-color: var(--arena); color: var(--tinta);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 160 26' preserveAspectRatio='none'%3E%3Cpath d='M0,26 C24,6 46,4 70,13 C94,22 118,24 138,14 C148,9 154,6 160,3 L160,0 L0,0 Z' fill='%230A1518'/%3E%3C/svg%3E");
  background-repeat: repeat-x; background-position: 0 top; background-size: 160px 26px;
  padding-top: 78px; padding-bottom: 42px;
}
.hoja--fin{ padding-bottom: 72px; }

.hoja--arena::before{ content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 7px; background: var(--agua); }
.hoja--arena::after{
  content: ""; position: absolute; left: 7px; top: 0; bottom: 0; width: 3px;
  background: repeating-linear-gradient(180deg, var(--sonda) 0 2px, transparent 2px 15px);
  opacity: .45;
}

.mojon{
  display: grid; grid-template-columns: auto 1fr; align-items: baseline;
  gap: 3px 12px; padding: 0 0 14px; margin-bottom: 26px;
  border-bottom: 1px solid var(--linea); position: relative;
}
.mojon--arena{ border-bottom-color: var(--arena-sombra); }
.mojon-km{
  grid-row: 1; justify-self: start; font-family: var(--mono); font-size: 11px;
  letter-spacing: .1em; color: var(--sonda-clara); padding: 0;
}
.mojon--arena .mojon-km{ color: var(--sonda-tinta); }
.mojon-h{
  grid-row: 1; grid-column: 2; justify-self: end;
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em; color: var(--hueso-tenue);
}
.mojon--arena .mojon-h{ color: var(--tinta-suave); }
.mojon-t{
  grid-row: 2; grid-column: 1 / -1; font-family: var(--display); font-weight: 300;
  font-size: clamp(1.75rem, 6.6vw, 2.9rem); line-height: 1.05; color: var(--hueso); margin-top: 3px;
}
.hoja--arena .mojon-t{ color: var(--tinta); }
.mojon-d{
  grid-row: 3; grid-column: 1 / -1; font-family: var(--mono); font-size: 10.5px;
  letter-spacing: .04em; color: var(--hueso-tenue); margin-top: 5px;
}
.hoja--arena .mojon-d{ color: var(--tinta-suave); }
.mojon::after{
  content: ""; position: absolute; right: 0; bottom: -4px; width: 7px; height: 7px;
  border-radius: 50%; background: var(--boya); opacity: .35;
}

.hoja-intro{
  font-family: var(--display); font-size: 1.06rem; line-height: 1.55;
  max-width: 48ch; color: var(--tinta); margin-bottom: 26px;
}
.hoja-intro--agua{ color: var(--hueso); }

/* ==========================================================================
   H.01 · la casa
   ========================================================================== */
.casa{ display: grid; gap: 24px; }
.casa-txt p{ max-width: 56ch; color: var(--hueso); }
.cita{ margin: 20px 0 0; padding: 13px 0 13px 16px; border-left: 3px solid var(--sonda); }
.cita p{
  font-family: var(--display); font-style: italic; font-size: 1.08rem;
  line-height: 1.42; color: var(--luz-alta); margin: 0; max-width: 42ch;
}

.cifras{
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin: 30px 0 0;
  background: var(--linea); border: 1px solid var(--linea);
}
.cifras > div{ background: var(--agua); padding: 16px 14px; }
.cifras dt{
  font-family: var(--sans); font-size: 9.5px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--hueso-tenue);
}
.cifras dd{
  margin: 6px 0 0; font-family: var(--mono); font-size: 29px; line-height: 1;
  color: var(--luz); font-variant-numeric: tabular-nums;
}
.cifras dd i{ font-size: 13px; font-style: normal; color: var(--hueso-tenue); }

/* ==========================================================================
   H.02 · sondajes
   ========================================================================== */
.sondajes{ list-style: none; margin: 0; padding: 0; }
.sondaje{
  display: grid; gap: 10px 18px; grid-template-columns: 60px 1fr;
  padding: 22px 0; border-top: 1px solid var(--arena-sombra);
}
.sondaje:last-child{ border-bottom: 1px solid var(--arena-sombra); }
.sondaje-n{
  grid-row: 1 / span 2; display: flex; flex-direction: column; align-items: flex-start;
  border-right: 1px solid var(--arena-sombra); padding-right: 11px;
}
.s-et{ font-family: var(--mono); font-size: 11px; color: var(--sonda-tinta); }
.s-num{
  font-family: var(--mono); font-size: 33px; line-height: .95; color: var(--sonda-tinta);
  font-variant-numeric: tabular-nums;
}
.s-prof{ font-family: var(--mono); font-size: 10.5px; color: var(--tinta-suave); margin-top: 7px; }
.sondaje-cu h3{
  font-family: var(--display); font-size: clamp(1.18rem, 4.8vw, 1.45rem);
  line-height: 1.15; color: var(--tinta); margin-bottom: 7px;
}
.sondaje-cu p{ color: var(--tinta-suave); max-width: 54ch; font-size: 14.5px; }

.ficha{
  display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1px; margin: 12px 0 0;
  background: var(--arena-sombra); border: 1px solid var(--arena-sombra);
}
.ficha > div{ background: var(--arena); padding: 8px 10px; }
.ficha dt{
  font-family: var(--sans); font-size: 9px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--tinta-suave);
}
.ficha dd{ margin: 2px 0 0; font-family: var(--mono); font-size: 12.5px; color: var(--tinta); }
.ficha-copa{ grid-column: 1 / -1; }
.ficha-copa dd{ color: var(--sonda-tinta); }
.sondaje-foto{ grid-column: 2; margin: 4px 0 0; }
/* si el sondaje no lleva foto, el texto ocupa el ancho entero:
   una columna vacía a la derecha se lee como algo que falta */
.sondaje--sinfoto .sondaje-cu{ grid-column: 2 / -1; }
.sondaje--sinfoto .sondaje-cu p{ max-width: 66ch; }

/* ==========================================================================
   H.03 · el hidrómetro
   ========================================================================== */
.hidrometro{ display: grid; grid-template-columns: 40px 1fr; }
.regla{
  position: relative; border-right: 1px solid var(--linea);
  display: flex; flex-direction: column; justify-content: space-between; padding: 8px 0;
}
.regla span{ position: relative; display: block; height: 0; font-family: var(--mono); font-size: 10px; color: var(--hueso-tenue); }
.regla span b{ position: absolute; right: 10px; top: -8px; font-weight: 400; font-size: 11px; color: var(--luz); }
.regla span::after{ content: ""; position: absolute; right: 0; top: 0; width: 6px; height: 1px; background: var(--linea); }
.regla-hoy{
  position: absolute; right: -1px; top: 46%; width: 26px; height: 3px; background: var(--boya-txt);
  transform: scaleX(0); transform-origin: right; transition: transform .75s var(--e2) .45s;
}
.regla-hoy em{
  position: absolute; right: 2px; top: -14px; font-family: var(--sans); font-style: normal;
  font-size: 8.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--boya-txt);
  opacity: 0; transition: opacity .45s var(--e) 1.05s; white-space: nowrap;
}
.regla-hoy.in{ transform: scaleX(1); }
.regla-hoy.in em{ opacity: 1; }

.escala{ list-style: none; margin: 0; padding: 0; }
.tramo{
  display: grid; grid-template-columns: 82px 1fr; gap: 12px 16px;
  padding: 18px 0 18px 14px; border-top: 1px solid var(--linea); position: relative;
}
.tramo:last-of-type{ border-bottom: 1px solid var(--linea); }
.tramo::before{
  content: ""; position: absolute; left: 0; bottom: 0; width: 82px;
  background: linear-gradient(180deg, var(--agua-luz), #0C1B1F);
  height: var(--h, 40%);
}
.tramo[data-alto="1"]{ --h: 22%; }
.tramo[data-alto="2"]{ --h: 40%; }
.tramo[data-alto="3"]{ --h: 58%; }
.tramo[data-alto="4"]{ --h: 78%; }
.tramo[data-alto="5"]{ --h: 100%; }
.tramo-m{
  position: relative; z-index: 1; display: flex; flex-direction: column; align-items: flex-start;
  border-right: 1px solid var(--linea); padding: 2px 10px 8px 4px;
}
.tramo-m b{
  font-family: var(--mono); font-size: 20px; color: var(--luz); font-weight: 400;
  line-height: 1.14; font-variant-numeric: tabular-nums;
}
.tramo-m span{
  font-family: var(--sans); font-size: 9.5px; letter-spacing: .13em;
  text-transform: uppercase; color: var(--hueso-tenue); margin: 1px 0;
}
.tramo-m i{ font-family: var(--mono); font-style: normal; font-size: 11px; color: var(--hueso-tenue); margin-top: 3px; }
.tramo-cu h3{
  font-family: var(--display); font-size: 1.2rem; color: var(--hueso); margin-bottom: 5px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 9px;
}
.tramo-cu p{ color: var(--hueso-tenue); max-width: 54ch; font-size: 14.5px; }
.tramo-c{
  font-family: var(--mono); font-size: 11.5px; color: var(--luz);
  border-top: 1px dashed #2A4247; padding-top: 8px; margin: 0;
}
.hoy{
  font-family: var(--sans); font-size: 9px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--agua-honda); background: var(--boya-txt); padding: 3px 8px; border-radius: 2px;
}
.tramo--hoy{ background: rgba(47,138,98,.06); }

.veda{
  margin: 26px 0 0; padding: 4px 0 4px 16px;
  border-left: 3px solid var(--sonda-clara);
  font-size: 13.5px; color: var(--hueso-tenue); max-width: 62ch;
}
.ancha{ margin: 30px 0 0; }
.ancha .marco{ max-height: 240px; }
.ancha .marco > img{ height: 240px; object-fit: cover; }
.casa-foto .marco > img{ max-height: 300px; object-fit: cover; }

/* ==========================================================================
   H.04 · anotaciones
   ========================================================================== */
.notas{ list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.nota{ border-top: 1px solid var(--arena-sombra); padding-top: 14px; }
.nota p{
  font-family: var(--lapiz); font-size: 1.4rem; line-height: 1.28;
  color: var(--tinta); margin: 0 0 8px; max-width: 42ch;
}
.nota footer{ display: flex; flex-wrap: wrap; gap: 3px 12px; align-items: baseline; }
.firma{ font-family: var(--lapiz); font-size: 1.1rem; color: var(--sonda-tinta); }
.fecha{ font-family: var(--mono); font-size: 10.5px; color: var(--tinta-suave); }

/* ==========================================================================
   H.05 · reserva
   ========================================================================== */
.reserva{ display: grid; gap: 24px; }
.form{ display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.campo{ display: flex; flex-direction: column; gap: 5px; }
.campo--ancho{ grid-column: 1 / -1; }
.campo label{
  font-family: var(--sans); font-size: 9.5px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--hueso-tenue);
}
.campo input, .campo select, .campo textarea{
  font-family: var(--sans); font-size: 16px; color: var(--hueso);
  background: var(--agua-honda); border: 1px solid #263C42; border-radius: 2px;
  padding: 11px 12px; width: 100%; min-height: 46px;
  transition: border-color .25s var(--e), background .25s var(--e);
}
.campo textarea{ resize: vertical; min-height: 78px; }
.campo input::placeholder, .campo textarea::placeholder{ color: #6B7E85; }
.campo input:focus, .campo select:focus, .campo textarea:focus{ border-color: var(--luz); background: #061114; }
.campo input[aria-invalid="true"]{ border-color: var(--sonda); }
.form-aviso{
  grid-column: 1 / -1; margin: 0; font-family: var(--mono); font-size: 10.5px;
  color: var(--hueso-tenue); line-height: 1.5;
}
.btn-enviar{ grid-column: 1 / -1; border: 0; cursor: pointer; font-size: 14px; padding: 15px 22px; }
.form-error{
  grid-column: 1 / -1; margin: 0; font-family: var(--sans); font-size: 13.5px;
  color: #F2A894; border-left: 3px solid var(--sonda); padding-left: 12px;
}

.ficha-casa{ border: 1px solid var(--linea); padding: 18px 16px; background: var(--agua-honda); }
.ficha-casa h3{
  font-family: var(--sans); font-size: 10px; letter-spacing: .2em;
  text-transform: uppercase; color: var(--luz); margin-bottom: 12px;
}
.ficha-casa dl{ margin: 0; display: grid; gap: 12px; }
.ficha-casa dt{
  font-family: var(--sans); font-size: 9.5px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--hueso-tenue);
}
.ficha-casa dd{ margin: 2px 0 0; font-family: var(--mono); font-size: 13px; color: var(--hueso); }
.ficha-casa dd a{ color: var(--hueso); text-decoration-color: #3A5359; }
.ficha-nota{
  margin: 16px 0 0; padding-top: 12px; border-top: 1px solid var(--linea);
  font-size: 12.5px; color: var(--hueso-tenue);
}

/* ==========================================================================
   pie
   ========================================================================== */
.pie{ background: var(--agua-honda); padding: 34px 0 40px; border-top: 1px solid var(--linea); }
.pie-marca{ font-family: var(--display); font-size: 17px; color: var(--hueso); margin-bottom: 8px; }
.pie-legal{ font-size: 12.5px; color: var(--hueso-tenue); max-width: 64ch; }
.pie-anio{ font-family: var(--mono); font-size: 10.5px; color: #6B7E85; margin: 0; }

/* ==========================================================================
   fotos — la leyenda vive fuera del recorte, nunca encima de la imagen
   ========================================================================== */
.slot{ position: relative; margin: 0; }
.slot > img{ width: 100%; height: auto; background: var(--agua-honda); }
.slot figcaption{
  font-family: var(--mono); font-size: 10.5px; color: var(--hueso-tenue);
  padding: 8px 0 0; line-height: 1.45;
}
.hoja--arena .slot figcaption{ color: var(--tinta-suave); }
.marco{ position: relative; overflow: hidden; display: block; }

.hueco{
  position: absolute; inset: 0; display: none; flex-direction: column;
  align-items: center; justify-content: center; gap: 9px;
  background: var(--agua-honda); border: 1px solid #1B2F35; min-height: 150px;
}
.slot.falta .hueco{ display: flex; }
.hueco-sello{
  font-family: var(--sans); font-size: 10px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--sonda-clara); border: 1px solid var(--sonda-clara); padding: 5px 11px; transform: rotate(-3deg);
}
.hueco-ficha{ font-family: var(--mono); font-size: 10px; color: #6B7E85; }

/* La foto de portada es el fondo de la tapa, no una foto en el flujo.
   Va después de .slot a propósito: si no, .slot{position:relative} la mete
   en el flujo y empuja toda la portada fuera de la pantalla. */
figure.tapa-foto{ position: absolute; inset: -4%; margin: 0; z-index: -2; }
figure.tapa-foto > img{ width: 100%; height: 100%; object-fit: cover; }

/* ==========================================================================
   MOVIMIENTO · todo cuelga de .anim; sin .anim no se esconde nada
   ========================================================================== */

/* 1 · la portada se despliega */
.anim .tapa-txt > *, .anim .tapa-lado > *{
  opacity: 0; transform: translateY(18px);
  transition: opacity .85s var(--e) calc(var(--d, 0) * 1ms),
              transform .95s var(--e2) calc(var(--d, 0) * 1ms);
}
.anim .tapa.ready .tapa-txt > *, .anim .tapa.ready .tapa-lado > *{ opacity: 1; transform: none; }

/* el nombre sube letra por letra, desde el agua */
.ch{ display: inline-block; overflow: hidden; vertical-align: bottom; }
.ch > i{ display: inline-block; font-style: inherit; }
.anim .tapa-nombre{ opacity: 1 !important; transform: none !important; }
.anim .tapa-nombre .ch > i{ transform: translateY(105%); transition: transform 1.1s var(--e2) calc(var(--d, 0) * 1ms); }
.anim .tapa.ready .tapa-nombre .ch > i{ transform: none; }

.anim .bajar i{ transform: scaleY(0); transition: transform .8s var(--e2) 1.6s; }
.anim .tapa.ready .bajar i{ transform: scaleY(1); }

/* 2 · las piezas se escriben al entrar, escalonadas */
.anim .esc{
  opacity: 0; transform: translateY(15px);
  transition: opacity .64s var(--e2) calc(var(--i, 0) * 75ms),
              transform .74s var(--e2) calc(var(--i, 0) * 75ms);
}
.anim .esc.in{ opacity: 1; transform: none; }

/* 3 · los títulos entran palabra por palabra */
.pal{ display: inline-block; overflow: hidden; vertical-align: bottom; }
.pal > i{ display: inline-block; font-style: inherit; }
.anim .rev .pal > i{ transform: translateY(103%); transition: transform .8s var(--e2) calc(var(--p, 0) * 70ms); }
.anim .rev.in .pal > i{ transform: none; }

/* 4 · la plomada del mojón y el destello de la boya */
/* La plomada se retiró del mojón: la medición la cuenta el propio dato. */
.anim .mojon::after{ opacity: 0; }
.anim .mojon.in::after{ animation: destello 1s var(--e2) .5s 1 forwards; }
@keyframes destello{
  0%   { opacity: 0; transform: scale(.3); box-shadow: 0 0 0 0 rgba(47,138,98,.6); }
  35%  { opacity: 1; transform: scale(1.6); box-shadow: 0 0 16px 5px rgba(47,138,98,.5); }
  100% { opacity: .35; transform: scale(1); box-shadow: 0 0 0 0 rgba(47,138,98,0); }
}

/* 5 · las fotos se revelan como una sonda que barre, y respiran */
.anim .marco > img{
  clip-path: inset(0 0 100% 0); transform: scale(1.09);
  transition: clip-path 1.1s var(--e2), transform 1.7s var(--e);
}
.anim .slot.in .marco > img{ clip-path: inset(0 0 0 0); transform: none; }
.anim .slot figcaption{ opacity: 0; transition: opacity .5s var(--e) .55s; }
.anim .slot.in figcaption{ opacity: 1; }
@media (hover: hover){
  .marco > img{ transition: transform .9s var(--e); }
  .anim .slot.in .marco:hover > img{ transform: scale(1.04); }
}

/* 6 · el agua del tramo sube hasta su altura */
.anim .tramo::before{ height: 0; transition: height 1.15s var(--e2) calc(var(--i, 0) * 90ms); }
.anim .tramo.in::before{ height: var(--h, 40%); }

/* 7 · las anotaciones se escriben a mano */
.anim .nota p{
  clip-path: inset(0 100% 0 0);
  transition: clip-path 1.2s cubic-bezier(.25,.7,.35,1) calc(var(--i, 0) * 95ms);
}
.anim .nota.in p{ clip-path: inset(0 0 0 0); }

/* 8 · ambiente: la orilla que respira, la boya y el canal corriendo */
.anim .hoja--arena{ animation: orilla 26s linear infinite; }
@keyframes orilla{ from{ background-position: 0 top; } to{ background-position: 160px top; } }

.anim .marca-sig{ animation: boya 4s steps(1, end) infinite; }
@keyframes boya{ 0%, 12%{ opacity: 1; } 13%, 100%{ opacity: .3; } }
.anim .hoja--arena::after{ animation: correr 9s linear infinite; }
@keyframes correr{ from{ background-position: 0 0; } to{ background-position: 0 17px; } }

/* 9 · deriva de la portada atada al scroll, donde el navegador la resuelve */
@supports (animation-timeline: view()){
  @media (prefers-reduced-motion: no-preference){
    .anim .tapa-foto{ animation: derivar linear both; animation-timeline: view(); animation-range: entry 0% exit 100%; }
    @keyframes derivar{ from{ transform: translateY(-2.6%); } to{ transform: translateY(2.6%); } }
  }
}

/* salida de emergencia: si el navegador no corre las transiciones, se pinta todo */
.sin-espera .esc,
.sin-espera .tapa-txt > *,
.sin-espera .tapa-lado > *{ opacity: 1 !important; transform: none !important; transition: none !important; }
.sin-espera .marco > img{ clip-path: none !important; transform: none !important; transition: none !important; }
.sin-espera .slot figcaption{ opacity: 1 !important; }
.sin-espera .nota p{ clip-path: none !important; }
.sin-espera .ch > i, .sin-espera .pal > i{ transform: none !important; transition: none !important; }
.sin-espera .tramo::before{ height: var(--h, 40%) !important; transition: none !important; }
.sin-espera .bajar i{ transform: none !important; }

@media (prefers-reduced-motion: reduce){
  .anim .esc, .anim .tapa-txt > *, .anim .tapa-lado > *{
    opacity: 1 !important; transform: none !important; transition: none !important;
  }
  .anim .marco > img{ clip-path: none !important; transform: none !important; transition: none !important; }
  .anim .slot figcaption{ opacity: 1 !important; }
  .anim .nota p{ clip-path: none !important; transition: none !important; }
  .anim .ch > i, .anim .pal > i{ transform: none !important; transition: none !important; }
  .anim .mojon.in::after{ animation: none; opacity: .35; }
  .anim .marca-sig{ animation: none; opacity: 1; }
  .anim .hoja--arena::after{ animation: none; }
  .anim .hoja--arena{ animation: none; }
  .anim .bajar i{ transform: none !important; }
  .anim .tramo::before{ height: var(--h, 40%) !important; transition: none !important; }
  .reservar-fijo{ transition: none; }
  .regla-hoy, .regla-hoy em{ transition: none; }
  .tapa-foto img{ transition: none !important; transform: none !important; }
}

/* ==========================================================================
   más ancho
   ========================================================================== */
@media (min-width: 620px){
  .cifras{ grid-template-columns: repeat(4, 1fr); }
  .ficha{ grid-template-columns: repeat(4, minmax(0,1fr)); }
  .notas{ grid-template-columns: repeat(2, 1fr); gap: 22px 30px; }
  .sondaje{ grid-template-columns: 76px 1fr 240px; }
  .sondaje-foto{ grid-column: 3; grid-row: 1 / span 2; margin: 0; }
  .hidrometro{ grid-template-columns: 44px 1fr; }
  .tramo{ grid-template-columns: 100px 1fr; }
  .tramo::before{ width: 100px; }
}

@media (min-width: 900px){
  :root{ --cta-alto: 0px; }
  .ancha .marco, .ancha .marco > img{ max-height: 360px; height: 360px; }
  .casa-foto .marco > img{ max-height: 340px; }
  body{ font-size: 17px; }
  .hojas{ display: flex; }
  .sonda-barra{ display: flex; }
  .reservar-fijo{ display: none; }

  .hoja{ padding: 92px 0; }
  .hoja--arena{ padding-top: 104px; padding-bottom: 62px; }
  .hoja--fin{ padding-bottom: 104px; }
  .mojon{ grid-template-columns: auto 1fr auto; margin-bottom: 38px; }
  .mojon-t{ grid-row: 2; grid-column: 1 / 3; }
  .mojon-d{ grid-row: 3; grid-column: 1 / -1; }

  .tapa{ padding: 36px 0 64px; }
  .tapa-in{ grid-template-columns: 1.4fr .6fr; gap: 46px; align-items: end; }
  .tapa-lado{ padding-bottom: 4px; }
  .tapa-datos{ flex-direction: column; gap: 10px; border-top: 0; padding-top: 0; }
  .tapa-datos > div{
    border-right: 0; margin-right: 0; padding-right: 0;
    border-top: 1px solid var(--linea); padding-top: 9px;
  }
  .tapa-rio{ width: 100%; }

  .casa{ grid-template-columns: 1.1fr .9fr; align-items: start; gap: 34px; }
  .cifras dd{ font-size: 37px; }
  .sondaje{ grid-template-columns: 92px 1fr 290px; padding: 30px 0; }
  .sondaje-cu h3{ font-size: 1.58rem; }
  .s-num{ font-size: 41px; }
  .hoja-intro{ font-size: 1.15rem; }
  .reserva{ grid-template-columns: 1.35fr .65fr; gap: 34px; align-items: start; }
  .indice-l .i-n{ font-size: 22px; }
  .indice{ padding: 54px 0; }
}

@media (min-width: 1180px){
  .tapa-nombre{ font-size: 7rem; }
  .hoja{ padding: 106px 0; }
  .sondaje{ grid-template-columns: 106px 1fr 330px; }
}