/* TermoCalc — sitio web. Tema oscuro como la app: azul noche y acento cian. */
:root {
  --fondo: #060d1c;
  --fondo-2: #0a1428;
  --tarjeta: #0e1a33;
  --tarjeta-2: #13213f;
  --borde: #1f2f52;
  --texto: #e6edf8;
  --texto-2: #a7b4cc;
  --texto-3: #74839f;
  --cian: #22b8f0;
  --cian-2: #4ea8de;
  --cian-suave: rgba(34, 184, 240, .12);
  --violeta: #8b5cf6;
  --violeta-suave: rgba(139, 92, 246, .14);
  --rojo: #ef4565;
  --azul: #3b82f6;
  --naranja: #f97316;
  --verde: #22c55e;
  --amarillo: #facc15;
  --radio: 14px;
  --sombra: 0 20px 50px -20px rgba(0, 0, 0, .7);
  --ancho: 1180px;
  --fuente: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  font-family: var(--fuente);
  font-size: 17px;
  line-height: 1.6;
  color: var(--texto);
  background: var(--fondo);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--cian); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.18; margin: 0 0 .5em; letter-spacing: -.015em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.6rem); font-weight: 800; }
h3 { font-size: 1.25rem; font-weight: 700; }
p { margin: 0 0 1em; }
.contenedor { width: min(var(--ancho), 100% - 32px); margin-inline: auto; }
.oculto-accesible { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Botones ---------- */
.boton {
  display: inline-flex; align-items: center; gap: .55em;
  padding: .8em 1.35em; border-radius: 10px;
  font-weight: 700; font-size: 1rem; border: 1px solid transparent;
  cursor: pointer; transition: transform .15s, background .15s, border-color .15s;
  text-decoration: none !important; font-family: inherit;
}
.boton:hover { transform: translateY(-1px); }
.boton-primario { background: var(--cian); color: #04121f; }
.boton-primario:hover { background: #45c6f5; }
.boton-secundario { background: transparent; color: var(--texto); border-color: var(--borde); }
.boton-secundario:hover { border-color: var(--cian); }
.boton svg { width: 1.15em; height: 1.15em; }

/* ---------- Barra ---------- */
.barra {
  position: sticky; top: 0; z-index: 50;
  background: rgba(6, 13, 28, .82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(31, 47, 82, .6);
}
.barra .contenedor { display: flex; align-items: center; gap: 24px; height: 64px; }
.marca { display: flex; align-items: center; gap: 10px; color: var(--texto); font-weight: 800; font-size: 1.2rem; text-decoration: none !important; }
.marca-logo {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: linear-gradient(135deg, #38bdf8, #0ea5e9 60%, #0284c7);
  box-shadow: 0 6px 18px -6px rgba(14, 165, 233, .8);
}
.marca-logo svg { width: 18px; height: 18px; color: #fff; }
.menu { display: flex; gap: 22px; margin-left: auto; }
.menu a { color: var(--texto-2); font-weight: 600; font-size: .95rem; }
.menu a:hover { color: var(--texto); text-decoration: none; }
.barra .boton { padding: .55em 1.05em; font-size: .92rem; }
.menu-boton { display: none; margin-left: auto; background: none; border: 1px solid var(--borde); color: var(--texto); border-radius: 8px; padding: 6px 9px; cursor: pointer; }
.menu-boton svg { width: 22px; height: 22px; display: block; }

@media (max-width: 1140px) {
  .menu { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--fondo-2); border-bottom: 1px solid var(--borde); padding: 8px 16px 16px; }
  .menu.abierto { display: flex; }
  .menu a { padding: 12px 0; border-bottom: 1px solid var(--borde); }
  .menu-boton { display: block; }
  .barra .barra-cta { display: none; }
}

/* ---------- Portada ---------- */
.portada { position: relative; padding: 72px 0 40px; overflow: hidden; }
.portada::before {
  content: ""; position: absolute; inset: -20% -10% auto; height: 760px; z-index: -1;
  background:
    radial-gradient(600px 380px at 18% 30%, rgba(34, 184, 240, .18), transparent 70%),
    radial-gradient(520px 340px at 85% 10%, rgba(139, 92, 246, .16), transparent 70%);
}
.portada-texto { max-width: 820px; margin: 0 auto; text-align: center; }
.etiqueta {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .82rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  color: var(--cian); background: var(--cian-suave); border: 1px solid rgba(34, 184, 240, .28);
  padding: 6px 12px; border-radius: 999px; margin-bottom: 20px;
}
.etiqueta.violeta { color: #c4b5fd; background: var(--violeta-suave); border-color: rgba(139, 92, 246, .35); }
.portada h1 span { background: linear-gradient(90deg, #38bdf8, #a78bfa); -webkit-background-clip: text; background-clip: text; color: transparent; }
.portada-bajada { font-size: clamp(1.05rem, 1.8vw, 1.25rem); color: var(--texto-2); max-width: 680px; margin: 0 auto 30px; }
.portada-acciones { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.portada-imagen {
  margin: 56px auto 0; max-width: 1100px; position: relative;
  border-radius: 16px; padding: 8px;
  background: linear-gradient(180deg, rgba(56, 189, 248, .35), rgba(139, 92, 246, .15) 60%, transparent);
  box-shadow: 0 40px 120px -30px rgba(14, 165, 233, .45);
}
.portada-imagen img { border-radius: 10px; width: 100%; }
.cifras { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 48px; }
.cifra { text-align: center; padding: 18px 12px; border-radius: var(--radio); background: var(--tarjeta); border: 1px solid var(--borde); }
.cifra b { display: block; font-size: 1.6rem; color: var(--texto); }
.cifra span { color: var(--texto-3); font-size: .9rem; }
@media (max-width: 760px) { .cifras { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Secciones ---------- */
.seccion { padding: 96px 0; }
.seccion.alterna { background: var(--fondo-2); border-block: 1px solid rgba(31, 47, 82, .6); }
.seccion-cabeza { text-align: center; max-width: 760px; margin: 0 auto 52px; }
.seccion-cabeza p { color: var(--texto-2); font-size: 1.1rem; }

/* ---------- Instalaciones ---------- */
.instalaciones { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.instalacion {
  padding: 26px 22px; border-radius: var(--radio);
  background: var(--tarjeta); border: 1px solid var(--borde);
  display: flex; flex-direction: column;
}
.instalacion .icono { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 16px; }
.instalacion .icono svg { width: 24px; height: 24px; }
.instalacion ul { margin: 6px 0 0; padding: 0; list-style: none; color: var(--texto-2); font-size: .94rem; }
.instalacion li { padding: 5px 0 5px 20px; position: relative; }
.instalacion li::before { content: ""; position: absolute; left: 2px; top: 13px; width: 7px; height: 7px; border-radius: 50%; background: currentColor; opacity: .5; }
.instalacion p { color: var(--texto-2); font-size: .95rem; }
.i-rojo { background: rgba(239, 69, 101, .14); color: #fb7185; }
.i-naranja { background: rgba(249, 115, 22, .14); color: #fb923c; }
.i-cian { background: var(--cian-suave); color: var(--cian); }
.i-violeta { background: var(--violeta-suave); color: #a78bfa; }
.i-verde { background: rgba(34, 197, 94, .13); color: #4ade80; }
.i-amarillo { background: rgba(250, 204, 21, .12); color: #facc15; }
@media (max-width: 900px) { .instalaciones { grid-template-columns: 1fr; } }

/* ---------- Videos ---------- */
.pestanas { display: flex; justify-content: center; gap: 8px; margin-bottom: 28px; flex-wrap: wrap; }
.pestana {
  font: inherit; font-weight: 700; color: var(--texto-2); cursor: pointer;
  background: var(--tarjeta); border: 1px solid var(--borde); border-radius: 999px; padding: 10px 22px;
  display: inline-flex; gap: 8px; align-items: center;
}
.pestana[aria-selected="true"] { color: #04121f; background: var(--cian); border-color: var(--cian); }
.pestana svg { width: 18px; height: 18px; }
.video-panel { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 24px; align-items: start; }
.video-panel[hidden] { display: none; }
.video-marco { border-radius: var(--radio); overflow: hidden; background: #000; border: 1px solid var(--borde); box-shadow: var(--sombra); aspect-ratio: 16 / 9; }
.video-marco video { width: 100%; height: 100%; object-fit: contain; background: #000; }
.video-info { background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio); padding: 22px; }
.video-info h3 { font-size: 1.1rem; }
.video-info > p { color: var(--texto-2); font-size: .93rem; }
.capitulos { list-style: none; margin: 14px 0 0; padding: 0; border-top: 1px solid var(--borde); }
.capitulos button {
  width: 100%; display: flex; gap: 12px; align-items: baseline; text-align: left;
  background: none; border: 0; border-bottom: 1px solid var(--borde); padding: 10px 4px;
  font: inherit; font-size: .93rem; color: var(--texto); cursor: pointer;
}
.capitulos button:hover { background: rgba(34, 184, 240, .06); }
.capitulos button.activo { color: var(--cian); }
.capitulos time { font-variant-numeric: tabular-nums; color: var(--cian); font-weight: 700; min-width: 40px; font-size: .85rem; }
.video-nota { font-size: .8rem; color: var(--texto-3); margin: 14px 0 0; }
@media (max-width: 960px) { .video-panel { grid-template-columns: 1fr; } }

/* ---------- Flujo (funciones con captura) ---------- */
.paso { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: center; padding: 44px 0; }
.paso + .paso { border-top: 1px solid rgba(31, 47, 82, .55); }
.paso:nth-child(even) .paso-texto { order: 2; }
.paso-numero { font-size: .8rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--cian); margin-bottom: 10px; display: block; }
.paso h3 { font-size: clamp(1.4rem, 2.4vw, 1.8rem); }
.paso p { color: var(--texto-2); }
.lista-chica { list-style: none; padding: 0; margin: 14px 0 0; }
.lista-chica li { padding: 6px 0 6px 28px; position: relative; color: var(--texto-2); font-size: .97rem; }
.lista-chica li::before {
  content: ""; position: absolute; left: 0; top: 11px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--cian-suave) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322b8f0' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center / 10px no-repeat;
}
.lista-chica b { color: var(--texto); font-weight: 600; }
.captura { position: relative; border-radius: 12px; overflow: hidden; border: 1px solid var(--borde); box-shadow: var(--sombra); background: var(--tarjeta); cursor: zoom-in; padding: 0; display: block; width: 100%; }
.captura img { width: 100%; transition: transform .4s; }
.captura:hover img { transform: scale(1.015); }
.captura figcaption, .captura .pie { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 14px 10px; font-size: .82rem; color: #dbe5f5; background: linear-gradient(transparent, rgba(4, 10, 22, .9)); text-align: left; }
.capturas-doble { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (max-width: 900px) {
  .paso { grid-template-columns: 1fr; gap: 26px; padding: 36px 0; }
  .paso:nth-child(even) .paso-texto { order: 0; }
}

/* ---------- IA ---------- */
.ia-grilla { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; }
.ia-pregunta { background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio); padding: 20px; }
.ia-pregunta .burbuja { background: rgba(14, 165, 233, .1); border: 1px solid rgba(56, 189, 248, .3); border-radius: 12px 12px 4px 12px; padding: 12px 14px; font-size: .95rem; margin-bottom: 12px; }
.ia-pregunta .respuesta { color: var(--texto-2); font-size: .92rem; padding-left: 14px; border-left: 2px solid var(--violeta); }
.ia-pregunta h4 { font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: #c4b5fd; margin-bottom: 12px; }
@media (max-width: 900px) { .ia-grilla { grid-template-columns: 1fr; } }

/* ---------- Salidas ---------- */
.salidas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.salida { background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio); overflow: hidden; display: flex; flex-direction: column; }
.salida .captura { border: 0; border-radius: 0; box-shadow: none; border-bottom: 1px solid var(--borde); aspect-ratio: 16 / 9; }
.salida .captura img { height: 100%; object-fit: cover; }
.salida-texto { padding: 18px 20px 22px; }
.salida-texto p { color: var(--texto-2); font-size: .94rem; margin: 0; }
@media (max-width: 960px) { .salidas { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .salidas { grid-template-columns: 1fr; } }

/* ---------- Motores y normas ---------- */
.motores { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.motor { padding: 22px; border-radius: var(--radio); background: var(--tarjeta); border: 1px solid var(--borde); }
.motor h3 { font-size: 1.05rem; display: flex; gap: 10px; align-items: center; }
.motor h3 .icono { width: 32px; height: 32px; border-radius: 9px; display: grid; place-items: center; flex: none; }
.motor h3 .icono svg { width: 18px; height: 18px; }
.motor p { color: var(--texto-2); font-size: .93rem; margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.chip { font-size: .75rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--tarjeta-2); border: 1px solid var(--borde); color: var(--texto-2); }
@media (max-width: 960px) { .motores { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .motores { grid-template-columns: 1fr; } }

/* ---------- Ventajas (cuenta) ---------- */
.ventajas { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.ventaja { padding: 22px; border-left: 2px solid var(--cian); background: linear-gradient(90deg, var(--cian-suave), transparent 70%); border-radius: 0 var(--radio) var(--radio) 0; }
.ventaja h3 { font-size: 1.02rem; }
.ventaja p { color: var(--texto-2); font-size: .93rem; margin: 0; }
@media (max-width: 960px) { .ventajas { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .ventajas { grid-template-columns: 1fr; } }

/* ---------- Preguntas ---------- */
.preguntas { max-width: 820px; margin: 0 auto; }
.preguntas details { border-bottom: 1px solid var(--borde); }
.preguntas summary { cursor: pointer; list-style: none; padding: 20px 40px 20px 0; font-weight: 700; font-size: 1.05rem; position: relative; }
.preguntas summary::-webkit-details-marker { display: none; }
.preguntas summary::after { content: "+"; position: absolute; right: 6px; top: 14px; font-size: 1.6rem; font-weight: 400; color: var(--cian); transition: transform .2s; }
.preguntas details[open] summary::after { transform: rotate(45deg); }
.preguntas details p { color: var(--texto-2); padding-bottom: 8px; }

/* ---------- Llamado final ---------- */
.llamado {
  text-align: center; border-radius: 22px; padding: 64px 24px;
  background:
    radial-gradient(500px 260px at 20% 0%, rgba(34, 184, 240, .25), transparent 70%),
    radial-gradient(500px 260px at 80% 100%, rgba(139, 92, 246, .25), transparent 70%),
    var(--tarjeta);
  border: 1px solid var(--borde);
}
.llamado p { color: var(--texto-2); max-width: 600px; margin: 0 auto 28px; font-size: 1.1rem; }

/* ---------- Pie ---------- */
.pie-sitio { padding: 40px 0; border-top: 1px solid var(--borde); color: var(--texto-3); font-size: .9rem; }
.pie-sitio .contenedor { display: flex; gap: 20px; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.pie-sitio nav { display: flex; gap: 18px; flex-wrap: wrap; }
.pie-sitio a:not(.boton) { color: var(--texto-2); }

/* ---------- Visor de capturas ---------- */
.visor { position: fixed; inset: 0; z-index: 100; background: rgba(2, 6, 14, .93); display: none; align-items: center; justify-content: center; padding: 24px; flex-direction: column; gap: 14px; }
.visor.abierto { display: flex; }
.visor img { max-height: calc(100vh - 110px); width: auto; border-radius: 10px; box-shadow: var(--sombra); }
.visor p { color: var(--texto-2); margin: 0; text-align: center; font-size: .95rem; }
.visor-cerrar { position: absolute; top: 14px; right: 16px; background: var(--tarjeta); border: 1px solid var(--borde); color: var(--texto); width: 42px; height: 42px; border-radius: 10px; font-size: 1.4rem; cursor: pointer; }

/* ---------- Aparición suave ---------- */
.aparece { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.aparece.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .aparece { opacity: 1; transform: none; transition: none; }
}

.salida-icono {
  aspect-ratio: 16 / 9; display: flex; gap: 12px; align-items: center; justify-content: center;
  border-bottom: 1px solid var(--borde);
  background: radial-gradient(260px 140px at 50% 50%, rgba(34, 184, 240, .16), transparent 70%), var(--tarjeta-2);
}
.salida-icono span {
  width: 74px; height: 92px; border-radius: 8px; display: grid; place-items: end center; padding-bottom: 12px;
  font-weight: 800; font-size: .85rem; letter-spacing: .04em; color: var(--texto);
  background: var(--tarjeta); border: 1px solid var(--borde); box-shadow: var(--sombra);
  border-top: 4px solid var(--cian);
}
.salida-icono span:nth-child(2) { border-top-color: var(--naranja); transform: translateY(-8px); }
.salida-icono span:nth-child(3) { border-top-color: var(--violeta); }

/* ---------- Pedido de demo ---------- */
.contacto { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; align-items: start; }
.contacto-texto p { color: var(--texto-2); font-size: 1.1rem; }
.formulario { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 18px; padding: 28px; background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio); }
.campo { display: grid; gap: 6px; }
.campo-ancho { grid-column: 1 / -1; }
.campo label { font-size: .9rem; font-weight: 600; }
.campo label span { font-weight: 400; color: var(--texto-3); }
.campo input, .campo select, .campo textarea {
  width: 100%; padding: 11px 13px; font: inherit; color: var(--texto); background: var(--fondo);
  border: 1px solid var(--borde); border-radius: 10px;
}
.campo textarea { resize: vertical; min-height: 110px; }
.campo input:focus, .campo select:focus, .campo textarea:focus { outline: 2px solid var(--cian); outline-offset: 1px; border-color: var(--cian); }
.formulario-pie { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.formulario-aviso { margin: 0; font-size: .88rem; color: var(--texto-3); flex: 1 1 260px; }
.pie-demo { font-size: .92rem; }
@media (max-width: 900px) { .contacto { grid-template-columns: 1fr; gap: 28px; } }
@media (max-width: 600px) { .formulario { grid-template-columns: 1fr; padding: 20px; } }

/* Pedido de demo: el campo trampa para robots (las personas no lo ven) y el botón mientras envía. */
.campo-trampa { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.formulario .boton[disabled] { opacity: .6; cursor: progress; }

/* Pedido de demo: el resultado del envío, bien visible (recuadro a todo el ancho, con ícono). */
.formulario-aviso.exito, .formulario-aviso.error { flex: 1 1 100%; display: flex; align-items: center; gap: 12px; margin: 4px 0 0; padding: 16px 18px; border-radius: 10px; font-size: 1.12rem; font-weight: 700; line-height: 1.35; }
.formulario-aviso.exito { background: rgba(34,197,94,.14); border: 2px solid #22c55e; color: #bbf7d0; }
.formulario-aviso.error { background: rgba(239,68,68,.14); border: 2px solid #ef4444; color: #fecaca; font-size: 1rem; }
.formulario-aviso.exito::before, .formulario-aviso.error::before { content: ""; flex: 0 0 30px; height: 30px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='12' fill='%2322a04b'/%3E%3Cpath d='M7 12.5l3.2 3.2L17 9' fill='none' stroke='white' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat; }
.formulario-aviso.error::before { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='12' fill='%23dc2626'/%3E%3Cpath d='M12 6.5v7M12 17.2v.3' fill='none' stroke='white' stroke-width='2.6' stroke-linecap='round'/%3E%3C/svg%3E"); }
@media (prefers-reduced-motion: no-preference) { .formulario-aviso.exito { animation: aviso-entra .35s ease-out; } }
@keyframes aviso-entra { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Cloudflare Turnstile: casi siempre invisible; si pide un clic, aparece a todo el ancho. */
.formulario .turnstile:empty { display: none; }
.formulario .turnstile iframe { max-width: 100%; }