/* Big Sur Energy · sitio nuevo (oct-2026)
   Identidad heredada de bigsur-web: marino #2f455c, turquesa #1fcfb3, Archivo. */
:root {
  --noche: #081523;
  --abismo: #0f2236;
  --abismo-2: #16304a;
  --marino: #2f455c;
  --turquesa: #1fcfb3;
  --pacifico: #17776f;
  --cielo: #7ea2bd;
  --niebla: #eff4f7;
  --blanco: #fff;
  --tinta: #13212e;
  --gris: #56636f;
  --gris-osc: #93a6b5;
  --linea: #d3dde4;
  --linea-osc: rgba(255,255,255,.14);
  --ancho: 1280px;
  --g: clamp(16px, 4vw, 48px);
  --f: "Archivo", system-ui, sans-serif;
  --ease: cubic-bezier(.2,.7,.1,1);
}
*,*::before,*::after { box-sizing: border-box; }
html { scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; font-family: var(--f); color: var(--tinta); background: var(--blanco); line-height: 1.6; font-size: 1.0625rem; -webkit-font-smoothing: antialiased; overflow-x: clip; }
h1,h2,h3,h4,p { margin: 0; }
img,svg { max-width: 100%; display: block; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--turquesa); outline-offset: 3px; }
.wrap { max-width: var(--ancho); margin: 0 auto; padding: 0 var(--g); }

/* tipografía */
.eyebrow { font-size: .8125rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 600; color: var(--pacifico); display: flex; gap: .6em; align-items: center; }
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.dark .eyebrow { color: var(--turquesa); }
.display { font-weight: 200; font-stretch: 105%; letter-spacing: -.035em; line-height: .95; font-size: clamp(3rem, 9vw, 8.5rem); }
.h2 { font-weight: 250; letter-spacing: -.03em; line-height: 1.02; font-size: clamp(2.1rem, 1.2rem + 3.4vw, 4.4rem); }
.h3 { font-weight: 500; font-size: 1.3rem; letter-spacing: -.01em; line-height: 1.2; }
.lead { font-size: clamp(1.1rem, 1rem + .5vw, 1.4rem); line-height: 1.5; font-weight: 300; max-width: 46ch; }
.muted { color: var(--gris); }
.dark .muted { color: var(--gris-osc); }
.acc { color: var(--turquesa); }

/* secciones */
section { padding: clamp(80px, 12vw, 160px) 0; position: relative; }
.dark { background: var(--abismo); color: var(--blanco); }
.niebla { background: var(--niebla); }
.head { display: grid; gap: 22px; margin-bottom: clamp(40px, 6vw, 80px); max-width: 900px; }

/* barra superior */
.top { position: fixed; inset: 0 0 auto; z-index: 50; transition: background .3s, backdrop-filter .3s; }
.top.solid { background: rgba(8,21,35,.94); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.top__logo img { width: 150px; height: auto; }
.nav { display: flex; gap: 28px; align-items: center; }
.nav a { color: #fff; text-decoration: none; font-size: .9375rem; opacity: .85; }
.nav a:hover, .nav a[aria-current] { opacity: 1; color: var(--turquesa); }
.btn { display: inline-flex; align-items: center; gap: .6em; padding: 13px 22px; border-radius: 999px; background: var(--turquesa); color: var(--abismo); font-weight: 600; text-decoration: none; font-size: .9375rem; border: 0; cursor: pointer; font-family: inherit; transition: transform .3s var(--ease), background .2s; }
.btn:hover { transform: translateY(-2px); background: #4fe0c8; }
.btn--ghost { background: transparent; color: inherit; box-shadow: inset 0 0 0 1px currentColor; }
.btn--ghost:hover { background: rgba(31,207,179,.12); }
.nav .btn { color: var(--abismo); opacity: 1; padding: 10px 18px; }
.burger { display: none; background: none; border: 0; color: #fff; width: 44px; height: 44px; cursor: pointer; }
.burger span { display: block; width: 22px; height: 1.5px; background: currentColor; margin: 6px auto; transition: transform .3s; }
@media (max-width: 1100px) {
  .burger { display: block; }
  .nav { position: fixed; inset: 72px 0 auto; background: var(--noche); flex-direction: column; align-items: flex-start; padding: 24px var(--g) 32px; gap: 18px; transform: translateY(-120%); transition: transform .4s var(--ease); }
  .nav.open { transform: none; }
  .nav a { font-size: 1.25rem; }
}

/* hero */
.hero { min-height: 100svh; display: flex; align-items: flex-end; padding: 120px 0 clamp(48px, 8vw, 96px); background: radial-gradient(120% 90% at 80% 10%, #1e3752 0%, var(--abismo) 45%, var(--noche) 100%); color: #fff; overflow: hidden; }
.hero--sub { min-height: 78svh; }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .9; }
.hero .wrap { position: relative; width: 100%; }
.hero__grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: end; margin-top: 40px; }
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.hero .display em { font-style: normal; color: var(--turquesa); font-weight: 300; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.tag { border: 1px solid var(--linea-osc); border-radius: 999px; padding: 6px 14px; font-size: .8125rem; color: var(--gris-osc); }
@media (max-width: 900px) { .hero__grid { grid-template-columns: 1fr; } }

/* pilares independiente */
.pilares { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--linea); }
.pilar { padding: 36px 32px 8px 0; border-right: 1px solid var(--linea); }
.pilar + .pilar { padding-left: 32px; }
.pilar:last-child { border-right: 0; }
.pilar .n { font-size: .8125rem; color: var(--pacifico); font-weight: 600; letter-spacing: .1em; }
.pilar h3 { margin: 14px 0 10px; }
@media (max-width: 800px) { .pilares { grid-template-columns: 1fr; } .pilar, .pilar + .pilar { padding: 28px 0; border-right: 0; border-bottom: 1px solid var(--linea); } }

/* áreas */
.areas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--linea-osc); border: 1px solid var(--linea-osc); }
.area { background: var(--abismo); padding: 36px 32px; display: flex; flex-direction: column; gap: 16px; min-height: 460px; text-decoration: none; position: relative; overflow: hidden; transition: background .4s var(--ease); }
.area:hover { background: var(--abismo-2); }
.area .num { font-size: 4.5rem; font-weight: 150; line-height: 1; color: var(--turquesa); letter-spacing: -.04em; }
.area ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; font-size: .9375rem; color: var(--gris-osc); }
.area li::before { content: "— "; color: var(--turquesa); }
.area .go { margin-top: auto; display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--turquesa); }
.area .go i { display: inline-block; transition: transform .3s var(--ease); font-style: normal; }
.area:hover .go i { transform: translateX(6px); }
@media (max-width: 900px) { .areas { grid-template-columns: 1fr; } .area { min-height: 0; } }

/* cifras */
.cifras { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--linea); }
.cifra { padding: 28px 24px 28px 0; border-bottom: 1px solid var(--linea); }
.cifra b { display: block; font-weight: 200; font-size: clamp(1.9rem, 1.2rem + 2vw, 3.4rem); letter-spacing: -.04em; line-height: 1; color: var(--marino); white-space: nowrap; }
.cifra { padding-right: 16px; min-width: 0; }
.cifra span { font-size: .9375rem; color: var(--gris); display: block; margin-top: 10px; max-width: 24ch; }
.dark .cifras, .dark .cifra { border-color: var(--linea-osc); }
.dark .cifra b { color: #fff; }
.dark .cifra span { color: var(--gris-osc); }
@media (max-width: 900px) { .cifras { grid-template-columns: repeat(2, 1fr); } }

/* simulador de ahorro */
.ahorro { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.sim { background: #fff; border: 1px solid var(--linea); border-radius: 20px; padding: clamp(22px, 3vw, 36px); }
.sim label { display: block; font-size: .875rem; color: var(--gris); margin-bottom: 8px; }
.sim output { font-weight: 600; color: var(--tinta); }
.sim input[type=range] { width: 100%; accent-color: var(--pacifico); margin: 4px 0 22px; }
.palancas { display: grid; gap: 10px; margin-bottom: 24px; }
.palanca { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 12px 14px; border: 1px solid var(--linea); border-radius: 12px; cursor: pointer; transition: border-color .2s, background .2s; font-size: .9375rem; }
.palanca:has(input:checked) { border-color: var(--turquesa); background: rgba(31,207,179,.07); }
.palanca input { accent-color: var(--pacifico); width: 18px; height: 18px; }
.palanca small { color: var(--gris); font-size: .8125rem; }
.barras { display: grid; gap: 10px; margin: 8px 0 18px; }
.barra { display: grid; grid-template-columns: 70px 1fr; gap: 12px; align-items: center; font-size: .8125rem; color: var(--gris); }
.barra div { height: 34px; border-radius: 6px; background: var(--marino); transition: width .6s var(--ease); display: flex; align-items: center; justify-content: flex-end; padding: 0 10px; color: #fff; font-size: .8125rem; white-space: nowrap; }
.barra--nuevo div { background: var(--turquesa); color: var(--abismo); }
.resultado { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; border-top: 1px solid var(--linea); padding-top: 18px; flex-wrap: wrap; }
.resultado b { font-size: clamp(2rem, 1.5rem + 2vw, 3rem); font-weight: 300; letter-spacing: -.03em; color: var(--pacifico); line-height: 1; }
@media (max-width: 900px) { .ahorro { grid-template-columns: 1fr; } }

/* tombstones */
.deals { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.tomb { border: 1px solid var(--linea-osc); border-radius: 4px; padding: 28px 24px; display: flex; flex-direction: column; gap: 10px; min-height: 300px; background: linear-gradient(180deg, rgba(255,255,255,.03), transparent); transition: border-color .3s, transform .4s var(--ease); }
.tomb:hover { border-color: var(--turquesa); transform: translateY(-4px); }
.tomb .tipo { font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--turquesa); font-weight: 600; }
.tomb .monto { font-size: 2.3rem; font-weight: 200; letter-spacing: -.03em; line-height: 1.05; margin-top: auto; }
.tomb .cli { font-weight: 500; }
.tomb .det { color: var(--gris-osc); font-size: .875rem; }
.tomb .pie { border-top: 1px solid var(--linea-osc); padding-top: 12px; font-size: .75rem; color: var(--gris-osc); display: flex; justify-content: space-between; }
.filtros { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.filtros button { font: inherit; font-size: .875rem; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--linea-osc); background: none; color: var(--gris-osc); cursor: pointer; }
.filtros button[aria-pressed=true] { background: var(--turquesa); border-color: var(--turquesa); color: var(--abismo); font-weight: 600; }

/* contacto */
.contacto { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(32px, 6vw, 96px); }
form { display: grid; gap: 18px; }
.servicios { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; border: 0; padding: 0; margin: 0; }
.servicios legend { font-size: .875rem; color: var(--gris); margin-bottom: 10px; padding: 0; }
.serv { position: relative; }
.serv input { position: absolute; opacity: 0; }
.serv span { display: block; padding: 16px; border: 1px solid var(--linea); border-radius: 12px; cursor: pointer; font-size: .9375rem; line-height: 1.3; height: 100%; transition: all .2s; }
.serv span small { display: block; color: var(--gris); font-size: .78rem; margin-top: 6px; }
.serv input:checked + span { border-color: var(--pacifico); background: rgba(31,207,179,.08); box-shadow: inset 0 0 0 1px var(--pacifico); }
.serv input:focus-visible + span { outline: 2px solid var(--turquesa); outline-offset: 2px; }
.campos { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.campo label { display: block; font-size: .875rem; color: var(--gris); margin-bottom: 6px; }
.campo input, .campo textarea, .campo select { width: 100%; font: inherit; font-size: 1rem; padding: 12px 14px; border: 1px solid var(--linea); border-radius: 10px; background: #fff; color: var(--tinta); }
.campo input:focus, .campo textarea:focus, .campo select:focus { outline: none; border-color: var(--pacifico); box-shadow: 0 0 0 3px rgba(31,207,179,.2); }
.campo--full { grid-column: 1 / -1; }
.destino { font-size: .875rem; color: var(--pacifico); background: rgba(31,207,179,.08); border-radius: 10px; padding: 10px 14px; }
.aviso { font-size: .875rem; padding: 14px; border-radius: 10px; background: var(--niebla); display: none; }
.aviso.on { display: block; }
@media (max-width: 900px) { .contacto { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .servicios, .campos { grid-template-columns: 1fr; } }

/* páginas de área: diagramas */
.diagrama { background: #fff; border: 1px solid var(--linea); border-radius: 20px; padding: clamp(16px, 3vw, 40px); overflow-x: auto; }
.dark .diagrama { background: var(--abismo-2); border-color: var(--linea-osc); }
.diagrama::after { content: "Desliza para ver el esquema completo →"; display: none; font-size: .78rem; color: var(--gris); margin-top: 10px; position: sticky; left: 0; }
@media (max-width: 700px) { .diagrama::after { display: block; } }
.diagrama svg { width: 100%; height: auto; min-width: 720px; }
.diagrama svg text { font-family: var(--f); }
.pasos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--linea); border: 1px solid var(--linea); }
.paso { background: #fff; padding: 28px; }
.paso b { color: var(--pacifico); font-size: .8125rem; letter-spacing: .1em; }
.paso h3 { margin: 10px 0 8px; }
.paso p { font-size: .9375rem; color: var(--gris); }
@media (max-width: 900px) { .pasos { grid-template-columns: 1fr; } }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }
.lista { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--linea); }
.lista li { padding: 16px 0; border-bottom: 1px solid var(--linea); display: grid; grid-template-columns: 1fr auto; gap: 16px; }
.lista li span { color: var(--gris); font-size: .9375rem; }
.dark .lista, .dark .lista li { border-color: var(--linea-osc); }
.dark .lista li span { color: var(--gris-osc); }
.proyectos { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.proy { border: 1px solid var(--linea); border-radius: 12px; padding: 18px; }
.proy b { display: block; font-size: 1.6rem; font-weight: 300; letter-spacing: -.02em; color: var(--marino); }
.proy span { font-size: .875rem; color: var(--gris); }
.cta { text-align: left; }
.cta .wrap { display: flex; justify-content: space-between; align-items: end; gap: 32px; flex-wrap: wrap; }

/* pie */
.pie-sitio { background: var(--noche); color: var(--gris-osc); padding: 64px 0 32px; font-size: .9375rem; }
.pie-sitio .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.pie-sitio h4 { color: #fff; font-weight: 500; margin-bottom: 12px; font-size: .9375rem; }
.pie-sitio a { text-decoration: none; display: block; padding: 3px 0; }
.pie-sitio a:hover { color: var(--turquesa); }
.pie-sitio .legal { grid-column: 1 / -1; border-top: 1px solid var(--linea-osc); padding-top: 24px; font-size: .8125rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
@media (max-width: 800px) { .pie-sitio .wrap { grid-template-columns: 1fr; } }

/* marquee de servicios */
.marquee { overflow: hidden; border-block: 1px solid var(--linea-osc); padding: 18px 0; background: var(--noche); color: var(--gris-osc); }
.marquee div { display: flex; gap: 48px; width: max-content; animation: mq 40s linear infinite; font-size: 1.1rem; font-weight: 300; }
.marquee span::after { content: "◆"; color: var(--turquesa); margin-left: 48px; font-size: .6em; vertical-align: middle; }
@keyframes mq { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .marquee div { animation: none; } }

/* revelado al scroll */
.js .rv { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .rv.in { opacity: 1; transform: none; }
.rv-d1 { transition-delay: .08s; } .rv-d2 { transition-delay: .16s; } .rv-d3 { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) { .js .rv { opacity: 1; transform: none; transition: none; } }
.linea-anim path.flujo { stroke-dasharray: 6 8; animation: flujo 1.6s linear infinite; }
@keyframes flujo { to { stroke-dashoffset: -28; } }
@media (prefers-reduced-motion: reduce) { .linea-anim path.flujo { animation: none; } }

/* equipo */
.equipo { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; }
.persona { border: 1px solid var(--linea-osc); border-radius: 4px; padding: 24px; display: flex; flex-direction: column; gap: 6px; transition: border-color .3s, transform .4s var(--ease); }
.persona:hover { border-color: var(--turquesa); transform: translateY(-4px); }
.persona .ini { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; background: var(--abismo-2); border: 1px solid var(--turquesa); color: var(--turquesa); font-weight: 300; font-size: 1.2rem; margin-bottom: 14px; }
.persona .cli { font-weight: 500; font-size: 1.1rem; }
.persona .tipo { font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--turquesa); font-weight: 600; }
.persona .det { color: var(--gris-osc); font-size: .875rem; }
.pasos--4 { grid-template-columns: repeat(2, 1fr); }
.pasos--4 .paso:last-child:nth-child(odd) { grid-column: 1 / -1; }
@media (max-width: 900px) { .pasos--4 { grid-template-columns: 1fr; } }