/* ==========================================================================
   QRelieve — hoja de estilos única
   ========================================================================== */

:root {
  --papel: #fbfaf8;
  --tarjeta: #ffffff;
  --tinta: #16161a;
  --tinta-suave: #5b5b66;
  --borde: #e5e2dc;
  --borde-fuerte: #d3cfc7;
  --acento: #e8590c;
  --acento-suave: #fff1e8;
  --bien: #167a4a;
  --bien-fondo: #eaf7f0;
  --regular: #9a6700;
  --regular-fondo: #fff8e5;
  --malo: #c02626;
  --malo-fondo: #fdecec;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --display: 'Space Grotesk', var(--sans);
  --radio: 14px;
  --sombra: 0 1px 2px rgba(22, 22, 26, .05), 0 8px 24px rgba(22, 22, 26, .06);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --gutter: clamp(1rem, 4vw, 2rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --papel: #131317;
    --tarjeta: #1c1c21;
    --tinta: #f2f1ee;
    --tinta-suave: #a3a2ac;
    --borde: #2e2e36;
    --borde-fuerte: #3c3c46;
    --acento: #ff7a33;
    --acento-suave: #33200f;
    --bien-fondo: #12251c;
    --regular-fondo: #2b2410;
    --malo-fondo: #2c1616;
    --sombra: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35);
  }
}

/* ----- reset ----- */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--tinta);
  background: var(--papel);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg, canvas { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; line-height: 1.12; letter-spacing: -.02em; font-family: var(--display); }
:focus-visible { outline: 2px solid var(--acento); outline-offset: 3px; border-radius: 6px; }

.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 999;
  padding: .6rem 1rem; background: var(--tinta); color: var(--papel); border-radius: 8px;
}
.skip-link:focus { top: 1rem; }

.contenedor { width: min(1120px, 100%); margin-inline: auto; padding-inline: var(--gutter); }

/* ----- cabecera ----- */
.cabecera {
  border-bottom: 1px solid var(--borde);
  background: color-mix(in srgb, var(--papel) 88%, transparent);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 40;
}
.cabecera__fila { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.marca { display: flex; align-items: center; gap: .55rem; font-family: var(--display); font-weight: 700; font-size: 1.12rem; }
.marca__icono { color: var(--acento); }
.cabecera__nav { display: none; gap: 1.6rem; font-size: .93rem; color: var(--tinta-suave); }
.cabecera__nav a:hover { color: var(--acento); }
@media (min-width: 720px) { .cabecera__nav { display: flex; } }

/* ----- hero ----- */
.hero { padding: clamp(1.6rem, 5vw, 3rem) var(--gutter) 1.4rem; text-align: center; }
.hero h1 { font-size: clamp(1.85rem, 5.2vw, 3rem); }
.hero__sub {
  margin: .9rem auto 0; max-width: 62ch; color: var(--tinta-suave);
  font-size: clamp(1rem, 2.2vw, 1.09rem);
}

/* ----- tarjeta de la herramienta ----- */
.tarjeta {
  background: var(--tarjeta);
  border: 1px solid var(--borde);
  border-radius: 20px;
  box-shadow: var(--sombra);
  padding: clamp(1rem, 3vw, 1.6rem);
  display: grid;
  gap: 1.3rem;
}
@media (min-width: 960px) {
  .tarjeta { grid-template-columns: 1fr 1fr; align-items: start; }
  .bloque--contenido { grid-column: 1 / -1; }
  .bloque--vistas { position: sticky; top: 78px; }
  .privacidad { grid-column: 1 / -1; }
}

.bloque { display: grid; gap: .85rem; min-width: 0; }

/* pestañas */
.pestanas { display: inline-flex; gap: .25rem; padding: .25rem; background: var(--papel); border: 1px solid var(--borde); border-radius: 11px; }
.pestanas button {
  padding: .45rem 1rem; border-radius: 8px; font-size: .92rem; font-weight: 500;
  color: var(--tinta-suave); transition: all .18s var(--ease-out);
}
.pestanas button[aria-selected="true"] { background: var(--tinta); color: var(--papel); }

/* campos */
.etiqueta { display: block; font-size: .87rem; font-weight: 600; margin-bottom: .35rem; }
.etiqueta--mini { margin-top: .7rem; font-weight: 500; color: var(--tinta-suave); }
.campo {
  width: 100%; padding: .7rem .85rem; font-size: .97rem; font-family: inherit; color: inherit;
  background: var(--papel); border: 1px solid var(--borde-fuerte); border-radius: 10px;
  transition: border-color .18s var(--ease-out), box-shadow .18s var(--ease-out);
}
.campo:focus { outline: 0; border-color: var(--acento); box-shadow: 0 0 0 3px var(--acento-suave); }
.campo--grande { font-size: 1.03rem; padding: .85rem 1rem; }
.ayuda { font-size: .84rem; color: var(--tinta-suave); margin-top: .4rem; }
.rejilla-2 { display: grid; gap: .8rem; grid-template-columns: 1fr; }
@media (min-width: 540px) { .rejilla-2 { grid-template-columns: 1fr 1fr; } }

.color {
  width: 100%; height: 42px; padding: 3px; background: var(--papel);
  border: 1px solid var(--borde-fuerte); border-radius: 10px; cursor: pointer;
}
.casilla { display: flex; align-items: center; gap: .45rem; font-size: .85rem; color: var(--tinta-suave); margin-top: .45rem; }

input[type=range] { width: 100%; accent-color: var(--acento); }
output { font-weight: 500; color: var(--acento); font-variant-numeric: tabular-nums; }

/* vistas previas */
.vista { display: grid; gap: .5rem; }
.vista figcaption { font-size: .87rem; font-weight: 600; }
.pista { font-weight: 400; color: var(--tinta-suave); }
.vista__marco {
  position: relative;
  border: 1px solid var(--borde); border-radius: var(--radio);
  background: var(--papel);
  overflow: hidden;
  aspect-ratio: 1 / 1;
  display: grid; place-items: center;
}
.vista__marco--damero {
  background-image:
    linear-gradient(45deg, #eceae5 25%, transparent 25%, transparent 75%, #eceae5 75%),
    linear-gradient(45deg, #eceae5 25%, transparent 25%, transparent 75%, #eceae5 75%);
  background-size: 18px 18px;
  background-position: 0 0, 9px 9px;
}
@media (prefers-color-scheme: dark) {
  .vista__marco--damero {
    background-image:
      linear-gradient(45deg, #26262d 25%, transparent 25%, transparent 75%, #26262d 75%),
      linear-gradient(45deg, #26262d 25%, transparent 25%, transparent 75%, #26262d 75%);
  }
}
#lienzoQR { width: 100%; height: auto; }
#lienzo3d { width: 100%; height: 100%; touch-action: none; cursor: grab; }
#lienzo3d.girando { cursor: grabbing; }
.vista__pie { font-size: .82rem; color: var(--tinta-suave); font-variant-numeric: tabular-nums; min-height: 1.2em; }

.vista__mensaje {
  position: absolute; inset: auto 1rem; text-align: center;
  font-size: .88rem; color: var(--tinta-suave);
}
.vista__mensaje--sinwebgl, #visor3d[data-estado="listo"] .vista__mensaje { display: none; }
#visor3d[data-estado="sin-webgl"] .vista__mensaje--preparando { display: none; }
#visor3d[data-estado="sin-webgl"] .vista__mensaje--sinwebgl { display: block; }
#visor3d[data-estado="sin-webgl"] #lienzo3d,
#visor3d[data-estado="preparando"] #lienzo3d { visibility: hidden; }
#visor3d[data-estado="sin-webgl"] #btnReencuadrar,
#visor3d[data-estado="preparando"] #btnReencuadrar { display: none; }

.btn--flotante { position: absolute; right: .6rem; bottom: .6rem; }

/* grupos plegables */
.grupo { border: 1px solid var(--borde); border-radius: var(--radio); padding: .85rem 1rem; background: var(--papel); }
.grupo + .grupo { margin-top: .85rem; }
.grupo__titulo {
  font-family: var(--display); font-weight: 700; font-size: 1rem; cursor: pointer;
  list-style: none; display: flex; align-items: center; justify-content: space-between;
}
.grupo__titulo::-webkit-details-marker { display: none; }
.grupo__titulo::after { content: "+"; font-size: 1.3rem; color: var(--tinta-suave); }
.grupo[open] .grupo__titulo::after { content: "−"; }
.control { margin-top: 1rem; }

/* opciones */
.opciones { display: flex; flex-wrap: wrap; gap: .45rem; }
.opcion {
  padding: .5rem .85rem; font-size: .89rem; font-weight: 500;
  border: 1px solid var(--borde-fuerte); border-radius: 9px; background: var(--tarjeta);
  transition: all .16s var(--ease-out);
}
.opcion:hover { border-color: var(--acento); }
.opcion.activo { border-color: var(--acento); background: var(--acento-suave); color: var(--acento); }
.opciones--emoji .opcion { font-size: 1.18rem; padding: .35rem .55rem; line-height: 1; }
.opciones--formato { display: grid; grid-template-columns: 1fr; gap: .5rem; }
@media (min-width: 540px) { .opciones--formato { grid-template-columns: repeat(3, 1fr); } }
.opciones--formato .opcion { display: grid; gap: .12rem; text-align: left; padding: .65rem .8rem; }
.opciones--formato small { font-size: .76rem; color: var(--tinta-suave); font-weight: 400; }
.opciones--formato .opcion.activo small { color: inherit; opacity: .8; }

.fila-subida { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; margin-top: .55rem; }

/* botones */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .7rem 1.1rem; border-radius: 10px; font-weight: 600; font-size: .94rem;
  transition: all .18s var(--ease-out);
}
.btn--principal { background: var(--acento); color: #fff; width: 100%; padding: .95rem 1.2rem; font-size: 1.02rem; flex-direction: column; gap: .1rem; }
.btn--principal small { font-weight: 400; font-size: .78rem; opacity: .9; }
.btn--principal:hover { filter: brightness(1.06); }
.btn--suave { background: var(--tarjeta); border: 1px solid var(--borde-fuerte); }
.btn--suave:hover { border-color: var(--acento); color: var(--acento); }
.btn--texto { color: var(--tinta-suave); font-weight: 500; font-size: .88rem; padding: .5rem; }
.btn--texto:hover { color: var(--acento); }
.btn--mini { padding: .35rem .7rem; font-size: .78rem; background: var(--tarjeta); border: 1px solid var(--borde-fuerte); }
.btn[disabled] { opacity: .55; cursor: progress; }
.btn[data-ocupado="si"]::after { content: "…"; }

.descargas { display: grid; gap: .5rem; margin-top: 1.1rem; justify-items: center; }
.descargas--imagen { grid-template-columns: 1fr 1fr; }

/* avisos */
.avisos { list-style: none; padding: 0; margin: 1.1rem 0 0; display: grid; gap: .45rem; }
.aviso { font-size: .85rem; padding: .55rem .7rem; border-radius: 9px; border-left: 3px solid; }
.aviso--bien { background: var(--bien-fondo); border-color: var(--bien); }
.aviso--regular { background: var(--regular-fondo); border-color: var(--regular); }
.aviso--malo { background: var(--malo-fondo); border-color: var(--malo); }
.aviso--info { background: var(--papel); border-color: var(--borde-fuerte); color: var(--tinta-suave); }

.privacidad {
  font-size: .87rem; color: var(--tinta-suave); text-align: center;
  padding-top: .4rem; border-top: 1px dashed var(--borde);
}
.nota--aviso { padding: .8rem; background: var(--regular-fondo); border-radius: 10px; font-size: .9rem; }

/* ----- huecos de anuncio ----- */
.anuncio {
  display: grid; place-items: center;
  border: 1px dashed var(--borde-fuerte); border-radius: 12px;
  background: repeating-linear-gradient(45deg, transparent, transparent 9px, color-mix(in srgb, var(--borde) 45%, transparent) 9px, color-mix(in srgb, var(--borde) 45%, transparent) 18px);
  color: var(--tinta-suave); font-size: .72rem; letter-spacing: .18em; font-weight: 600;
}
.anuncio--banner { min-height: 96px; margin: 2rem 0 .5rem; }
.anuncio--contenido { min-height: 260px; margin: 1.5rem 0; }
.anuncio--modal { min-height: 250px; width: 100%; }
.anuncio--esquina { min-height: 110px; width: 100%; }

/* ----- secciones ----- */
.seccion { padding: clamp(2.2rem, 6vw, 3.6rem) var(--gutter); }
.seccion h2 { font-size: clamp(1.4rem, 3.6vw, 2rem); margin-bottom: .7rem; }
.seccion__intro { color: var(--tinta-suave); max-width: 62ch; margin-bottom: 1.6rem; }

.pasos { list-style: none; padding: 0; display: grid; gap: 1rem; margin-top: 1.6rem; }
@media (min-width: 720px) { .pasos { grid-template-columns: repeat(3, 1fr); } }
.paso {
  background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio);
  padding: 1.3rem; display: grid; gap: .5rem; align-content: start;
}
.paso__num {
  display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%;
  background: var(--acento-suave); color: var(--acento); font-weight: 700; font-family: var(--display);
}
.paso h3 { font-size: 1.05rem; }
.paso p { font-size: .92rem; color: var(--tinta-suave); }

.ideas { display: grid; gap: .9rem; }
@media (min-width: 620px) { .ideas { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .ideas { grid-template-columns: repeat(3, 1fr); } }
.idea {
  background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio);
  padding: 1.15rem; display: grid; gap: .4rem; align-content: start;
}
.idea__icono { color: var(--acento); }
.idea h3 { font-size: 1rem; }
.idea p { font-size: .89rem; color: var(--tinta-suave); }

/* prosa */
.prosa { max-width: 72ch; }
.prosa h3 { font-size: 1.12rem; margin: 1.8rem 0 .5rem; }
.prosa p { color: var(--tinta-suave); }
.prosa strong { color: var(--tinta); }

/* faq */
.faq { display: grid; gap: .5rem; max-width: 78ch; }
.faq details {
  background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio); padding: .9rem 1.1rem;
}
.faq summary { font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--tinta-suave); }
.faq details[open] summary::after { content: "−"; }
.faq p { margin-top: .6rem; font-size: .92rem; color: var(--tinta-suave); }

/* pie */
.pie { border-top: 1px solid var(--borde); padding: 1.8rem 0; margin-top: 2rem; font-size: .87rem; color: var(--tinta-suave); }
.pie__fila { display: flex; flex-wrap: wrap; gap: .8rem; justify-content: space-between; align-items: center; }
.pie__nav { display: flex; gap: 1.1rem; }
.pie__nav a:hover { color: var(--acento); }

/* modal del anuncio */
.modal { border: 0; padding: 0; background: transparent; max-width: 92vw; }
.modal::backdrop { background: rgba(10, 10, 14, .55); backdrop-filter: blur(2px); }
.modal__caja {
  position: relative; background: var(--tarjeta); border-radius: 18px; padding: 1.5rem;
  width: min(360px, 92vw); display: grid; gap: 1rem; justify-items: center; box-shadow: var(--sombra);
}
.modal__titulo { font-weight: 600; font-size: 1rem; }
.modal__cerrar {
  position: absolute; top: .5rem; right: .7rem; font-size: 1.5rem; line-height: 1;
  color: var(--tinta-suave); width: 36px; height: 36px; border-radius: 50%;
}
.modal__cerrar:hover { background: var(--papel); color: var(--tinta); }

/* aviso de esquina */
.esquina {
  position: fixed; right: 1rem; bottom: 1rem; z-index: 50;
  width: 190px; padding: .7rem; background: var(--tarjeta);
  border: 1px solid var(--borde); border-radius: 14px; box-shadow: var(--sombra);
  animation: entraEsquina .4s var(--ease-out);
}
.esquina[hidden] { display: none; }
.esquina__cerrar {
  position: absolute; top: -9px; right: -9px; width: 26px; height: 26px; border-radius: 50%;
  background: var(--tinta); color: var(--papel); font-size: 1rem; line-height: 1; display: grid; place-items: center;
}
@keyframes entraEsquina { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@media (max-width: 539px) { .esquina { width: 150px; right: .6rem; bottom: .6rem; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .esquina { animation: none; }
}