:root {
  --fondo: #0C2118;          /* el fondo exacto de las maquetas generadas: el escenario no tiene borde */
  --panel: #0A1C14; --tinta: #EAF6EF; --t2: #B9CFC3; --t3: #7E968A; --borde: rgba(107, 215, 158, .16);
  --marca: #106735; --acento: #22A85F; --claro: #6BD79E; --ambar: #F2C200;
  --f-tit: 'Space Grotesk', system-ui, sans-serif; --f: 'Inter', system-ui, sans-serif; --f-dato: 'IBM Plex Mono', ui-monospace, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--fondo); color: var(--tinta); font: 400 15px/1.55 var(--f); }
button { font: inherit; color: inherit; }

.app { display: grid; min-height: 100%; }
@media (min-width: 1024px) {
  .app { grid-template-columns: minmax(330px, 30%) 1fr; height: 100vh; }
  .panel { order: 0; overflow-y: auto; border-right: 1px solid var(--borde); }
  .escenario { height: 100vh; }
}
@media (max-width: 1023px) { .escenario { order: -1; } }

/* Panel */
.panel { background: var(--panel); padding: 26px clamp(18px, 3vw, 30px) 30px; display: flex; flex-direction: column; gap: 18px; }
.logo { height: 42px; width: auto; align-self: flex-start; }
.eyebrow { margin: 0; font: 500 11px/1.3 var(--f-dato); letter-spacing: .1em; text-transform: uppercase; color: var(--claro); }
h1 { font: 700 clamp(24px, 2.4vw, 32px)/1.08 var(--f-tit); margin: 8px 0 8px; letter-spacing: -.01em; }
.pregunta { margin: 0; color: var(--t2); font-size: 15px; }
.etapa { border-top: 1px solid var(--borde); padding-top: 16px; }
.fase { margin: 0 0 4px; font: 500 11px/1.4 var(--f-dato); letter-spacing: .06em; text-transform: uppercase; color: var(--t3); }
h2 { font: 600 22px/1.15 var(--f-tit); margin: 0 0 10px; }
.entiende { margin: 0 0 10px; color: var(--tinta); }
details summary { cursor: pointer; font: 500 12px/1.4 var(--f-dato); color: var(--claro); }
details ul { margin: 8px 0 0; padding-left: 18px; color: var(--t2); font-size: 13.5px; }
details li { margin: 3px 0; }
.ficha { position: relative; background: #0F2A1E; border: 1px solid rgba(107, 215, 158, .35); border-radius: 12px; padding: 14px 16px; }
.ficha h3 { font: 600 17px/1.2 var(--f-tit); margin: 6px 0 6px; }
.ficha p { margin: 0; color: var(--t2); font-size: 14px; }
.ficha.flotante { position: absolute; z-index: 3; width: min(320px, 40%); background: rgba(12, 33, 24, .96); box-shadow: 0 12px 40px rgba(0, 0, 0, .45); cursor: auto; }
.cerrar { position: absolute; top: 6px; right: 8px; background: none; border: 0; font-size: 22px; cursor: pointer; color: var(--t3); line-height: 1; padding: 4px 8px; }
.lista { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.lista button { width: 100%; text-align: left; display: flex; gap: 10px; align-items: baseline; background: none; border: 1px solid transparent;
  border-radius: 8px; padding: 7px 10px; cursor: pointer; color: var(--t2); }
.lista button:hover { background: rgba(107, 215, 158, .06); }
.lista button[aria-current="step"] { border-color: var(--borde); background: rgba(34, 168, 95, .12); color: var(--tinta); }
.lista b { font: 500 11px/1 var(--f-dato); color: var(--claro); min-width: 22px; }
.nota { margin: auto 0 0; font: 400 11.5px/1.5 var(--f-dato); color: var(--t3); }

/* Escenario */
.escenario { display: flex; flex-direction: column; min-width: 0; }
.lienzo { position: relative; flex: 1; min-height: 0; touch-action: pan-y; cursor: grab; user-select: none; -webkit-user-select: none; }
@media (max-width: 1023px) { .lienzo { aspect-ratio: 2752 / 1536; flex: none; } }
.lienzo.arrastrando { cursor: grabbing; }
canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.puntos { position: absolute; inset: 0; pointer-events: none; }
.punto { position: absolute; transform: translate(-50%, -50%); pointer-events: auto; width: 30px; height: 30px; border-radius: 50%;
  border: 2px solid #fff; background: rgba(16, 103, 53, .92); color: #fff; font: 600 12px/1 var(--f-dato); cursor: pointer;
  box-shadow: 0 0 0 0 rgba(107, 215, 158, .6); animation: latido 2.4s infinite; opacity: 0; transition: opacity .35s, transform .2s; }
.punto.visible { opacity: 1; }
.punto:hover, .punto:focus-visible, .punto.activo { transform: translate(-50%, -50%) scale(1.15); background: var(--acento); outline: none; }
.punto .et { position: absolute; left: 50%; bottom: calc(100% + 8px); transform: translateX(-50%); white-space: nowrap; background: rgba(10, 28, 20, .92);
  border: 1px solid var(--borde); padding: 5px 9px; border-radius: 6px; font: 500 12px/1 var(--f); opacity: 0; pointer-events: none; transition: opacity .2s; }
.punto:hover .et, .punto:focus-visible .et, .punto.activo .et { opacity: 1; }
@keyframes latido { 0% { box-shadow: 0 0 0 0 rgba(107, 215, 158, .55); } 70% { box-shadow: 0 0 0 12px rgba(107, 215, 158, 0); } 100% { box-shadow: 0 0 0 0 rgba(107, 215, 158, 0); } }
@media (max-width: 600px) { .punto { width: 26px; height: 26px; font-size: 11px; } }
.pista { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); margin: 0; padding: 7px 12px; border-radius: 999px;
  background: rgba(10, 28, 20, .8); border: 1px solid var(--borde); font: 500 11.5px/1 var(--f-dato); color: var(--t2); pointer-events: none;
  transition: opacity .5s; white-space: nowrap; }
.pista.oculta { opacity: 0; }
.ad-linea { position: absolute; top: 0; bottom: 0; width: 0; pointer-events: none; }
.ad-linea i { position: absolute; top: 0; bottom: 0; left: -1px; width: 2px; background: #fff; box-shadow: 0 0 12px rgba(0, 0, 0, .5); }
.ad-linea span { position: absolute; top: 14px; font: 500 11px/1 var(--f-dato); letter-spacing: .08em; text-transform: uppercase; background: rgba(10, 28, 20, .85);
  padding: 5px 8px; border-radius: 5px; white-space: nowrap; }
.ad-linea span:first-child { right: 10px; } .ad-linea span:nth-child(3) { left: 10px; }
.carga { position: absolute; left: 0; right: 0; top: 0; height: 2px; overflow: hidden; opacity: 0; transition: opacity .3s; }
.carga.activa { opacity: 1; }
.carga span { position: absolute; inset: 0; background: var(--claro); transform-origin: left; animation: carga 1.2s infinite ease-in-out; }
@keyframes carga { 0% { transform: scaleX(0); } 60% { transform: scaleX(1); } 100% { transform: scaleX(1); opacity: 0; } }

/* Controles */
.controles { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding: 12px clamp(12px, 2vw, 22px) 16px; border-top: 1px solid var(--borde); background: var(--fondo); }
.btn, .btn-ico { border: 1px solid var(--borde); background: rgba(16, 103, 53, .35); border-radius: 10px; cursor: pointer; padding: 10px 14px; font-weight: 600; font-size: 14px; white-space: nowrap; min-height: 44px; }
.btn:hover, .btn-ico:hover { background: rgba(34, 168, 95, .45); }
.btn-ico { width: 44px; padding: 0; font-size: 22px; line-height: 1; }
.btn-sec { background: transparent; }
.btn[aria-pressed="true"] { background: var(--acento); border-color: var(--acento); color: #04140c; }
.linea-tiempo { position: relative; flex: 1 1 260px; height: 44px; cursor: pointer; touch-action: none; min-width: 200px; }
.linea-tiempo:focus-visible { outline: 2px solid var(--claro); outline-offset: 2px; border-radius: 8px; }
.pista-lt { position: absolute; left: 8px; right: 8px; top: 50%; height: 4px; margin-top: -2px; background: rgba(185, 207, 195, .18); border-radius: 2px; }
.relleno { position: absolute; left: 0; top: 0; bottom: 0; background: var(--acento); border-radius: 2px; width: 0; }
.marcas { position: absolute; left: 8px; right: 8px; top: 0; bottom: 0; }
.marca { position: absolute; top: 50%; width: 10px; height: 10px; margin: -5px 0 0 -5px; border-radius: 50%; background: #2C4A3C; border: 2px solid var(--fondo); }
.marca.hecha { background: var(--acento); }
.marca.video::after { content: ''; position: absolute; left: 12px; top: -1px; width: 0; height: 0; border-left: 6px solid var(--ambar); border-top: 4px solid transparent; border-bottom: 4px solid transparent; opacity: .8; }
.tirador { position: absolute; top: 50%; width: 20px; height: 20px; margin: -10px 0 0 -10px; border-radius: 50%; background: #fff; box-shadow: 0 2px 10px rgba(0, 0, 0, .4); left: 8px; }
@media (max-width: 600px) {
  .controles { gap: 8px; }
  .linea-tiempo { order: -1; flex-basis: 100%; }
  .btn { flex: 1; font-size: 13px; padding: 10px; }
}
@media (prefers-reduced-motion: reduce) { .punto { animation: none; } .carga span { animation: none; } }
@media (max-width: 1023px) {
  /* En móvil y tablet lo primero bajo la maqueta es la etapa en curso; el título del proyecto va después. */
  .etapa { order: 1; border-top: 0; padding-top: 0; } .ficha { order: 2; } .cab { order: 3; border-top: 1px solid var(--borde); padding-top: 16px; }
  .lista { order: 4; } .nota { order: 5; }
}
@media (max-width: 600px) { .pista { bottom: 6px; font-size: 10px; padding: 5px 9px; } }

/* Precarga (visor.js la llena con --p ∈ [0, 1] y la retira con .fuera) */
.precarga { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 24px;
  background: radial-gradient(120% 90% at 50% 40%, #12301F 0%, var(--fondo) 60%); --p: 0;
  transition: opacity .75s cubic-bezier(.4, 0, .2, 1), visibility 0s linear .75s; }
.precarga.fuera { opacity: 0; visibility: hidden; }
.pre-caja { display: flex; flex-direction: column; align-items: center; text-align: center; width: min(360px, 86vw);
  transition: transform .75s cubic-bezier(.4, 0, .2, 1); }
.precarga.fuera .pre-caja { transform: translateY(-14px) scale(.98); }
.pre-logo { height: 34px; width: auto; opacity: 0; animation: aparece .6s .1s ease-out forwards; }
.pre-tanque { width: min(250px, 58vw); height: auto; margin: 18px 0 14px; overflow: visible; }
.pre-trazos * { fill: none; stroke: var(--claro); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 1; stroke-dashoffset: 1; animation: trazo 1.1s cubic-bezier(.65, 0, .35, 1) var(--d, 0s) forwards; }
.pre-trazos .fino { stroke-width: .9; stroke: rgba(107, 215, 158, .55); }
.pre-trazos path, .pre-trazos ellipse { vector-effect: non-scaling-stroke; }
.pre-nivel { transform: translateY(calc((1 - var(--p)) * var(--alto, 70px))); }   /* --alto: recorrido del llenado (dibujo de cada obra) */
.pre-superficie { fill: #6BD79E; opacity: .35; animation: ola 2.6s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.precarga .eyebrow { opacity: 0; animation: aparece .6s .5s ease-out forwards; }
.pre-titulo { margin: 6px 0 16px; font: 600 22px/1.15 var(--f-tit); opacity: 0; animation: aparece .6s .6s ease-out forwards; }
.pre-barra { position: relative; width: 100%; height: 3px; border-radius: 2px; background: rgba(185, 207, 195, .16); overflow: hidden; }
.pre-barra i { position: absolute; inset: 0; transform-origin: left; transform: scaleX(var(--p)); background: linear-gradient(90deg, var(--acento), var(--claro)); }
.pre-barra i::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .55), transparent);
  transform: translateX(-100%); animation: brillo 1.6s ease-in-out infinite; }
.pre-pie { width: 100%; display: flex; justify-content: space-between; margin: 10px 0 0; font: 500 11.5px/1.3 var(--f-dato); color: var(--t3); letter-spacing: .04em; }
.pre-pie b { color: var(--tinta); font-weight: 500; font-variant-numeric: tabular-nums; }
@keyframes trazo { to { stroke-dashoffset: 0; } }
@keyframes aparece { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes ola { 50% { transform: scaleY(.82); opacity: .5; } }
@keyframes brillo { to { transform: translateX(100%); } }

/* Entrada de la interfaz cuando la precarga termina */
body:not(.abierta) .lienzo canvas { opacity: 0; transform: scale(1.025); }
.lienzo canvas { transition: opacity 1.1s cubic-bezier(.2, .7, .2, 1), transform 1.4s cubic-bezier(.2, .7, .2, 1); }
body:not(.abierta) .panel > *, body:not(.abierta) .controles { opacity: 0; transform: translateY(10px); }
.panel > *, .controles { transition: opacity .7s ease-out, transform .7s cubic-bezier(.2, .7, .2, 1); }
.panel > :nth-child(2) { transition-delay: .08s; } .panel > :nth-child(3) { transition-delay: .14s; }
.panel > :nth-child(4) { transition-delay: .2s; } .panel > :nth-child(5) { transition-delay: .26s; }
.controles { transition-delay: .3s; }

/* Búfer: lo que ya está en el equipo, detrás del avance */
.cargado { position: absolute; left: 0; top: 0; bottom: 0; width: 0; border-radius: 2px; background: rgba(185, 207, 195, .32); transition: width .5s ease-out; }
.marca.bajada:not(.hecha) { background: #4A6B5B; }

@media (prefers-reduced-motion: reduce) {
  .pre-trazos * { animation: none; stroke-dashoffset: 0; }
  .pre-logo, .precarga .eyebrow, .pre-titulo { animation: none; opacity: 1; }
  .pre-superficie, .pre-barra i::after { animation: none; }
  .precarga, .pre-caja, .lienzo canvas, .panel > *, .controles { transition-duration: .01s; }
  body:not(.abierta) .lienzo canvas, body:not(.abierta) .panel > *, body:not(.abierta) .controles { transform: none; }
}

/* Enlace a la pantalla de elección (solo en la versión publicada: publicar.py lo agrega) */
.volver { align-self: flex-start; margin-bottom: 14px; display: inline-flex; align-items: center; min-height: 32px; font: 500 12px/1 var(--f-dato);
  color: var(--claro); text-decoration: none; letter-spacing: .04em; border-bottom: 1px solid transparent; }
.volver:hover, .volver:focus-visible { border-bottom-color: var(--claro); outline: none; }
.cab { display: flex; flex-direction: column; }
.cab .logo { margin-bottom: 10px; }
@media (max-width: 1023px) {
  /* En móvil y tablet la maqueta va primero: el enlace flota sobre ella, arriba a la izquierda. */
  .volver { position: absolute; top: 10px; left: 10px; z-index: 4; margin: 0; padding: 0 12px; border-radius: 999px;
    background: rgba(10, 28, 20, .82); border: 1px solid var(--borde); }
}

/* Interruptor de idioma (ES/EN): misma clave que el sitio (localStorage laticon_lang). */
.idioma { position: absolute; top: 0; right: 0; z-index: 4; display: inline-flex; padding: 3px; border-radius: 999px; background: rgba(10, 28, 20, .82); border: 1px solid var(--borde); }
.idioma button { min-width: 34px; min-height: 28px; padding: 0 9px; border: 0; border-radius: 999px; background: transparent; color: var(--claro); font: 600 11px/1 var(--f-dato); letter-spacing: .06em; cursor: pointer; }
.idioma button.activo { background: #22A85F; color: #062417; }
.idioma button:focus-visible { outline: 2px solid #6BD79E; outline-offset: 1px; }
@media (min-width: 1024px) { .cab { position: relative; } }
@media (max-width: 1023px) { .idioma { top: 10px; right: 10px; } }