/* ==========================================================
   LYM Instalaciones Eléctricas — estilos (mobile-first)
   Concepto: el sitio se comporta como un tablero eléctrico.
   Un solo momento memorable: los "térmicos" de servicios
   se encienden al llegar a esa sección.
   ========================================================== */

:root{
  /* Paleta */
  --ink:#08151F;          /* fondo profundo */
  --panel:#0C1D2A;        /* tablero */
  --sheet:#0E2130;        /* bottom sheet */
  --paper:#E9EFF3;        /* fondo claro frío */
  --white:#FFFFFF;
  --text:#0E1B26;         /* 16.8:1 sobre paper */
  --muted:#425564;        /* 7.1:1 sobre paper */
  --on-dark:#C3D2DC;      /* 9.9:1 sobre panel */
  --blue:#00AEF0;         /* marca (sobre oscuro) */
  --blue-lt:#39C4FA;
  --blue-dk:#006FA6;      /* marca (sobre claro) 5.6:1 */
  --amber:#FFB81C;        /* color de cable / acción principal */
  --wa:#25D366;

  /* Tipografía */
  --f-display:"Archivo","Arial Narrow",Arial,sans-serif;
  --f-body:"Figtree",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;

  /* Forma */
  --r-xl:28px; --r-lg:24px; --r-md:18px; --r-sm:14px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --spring:cubic-bezier(.32,.72,0,1);
  --header-h:64px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html.sheet-open{overflow:hidden}
body{
  margin:0;background:var(--paper);color:var(--text);
  font:400 1.0625rem/1.6 var(--f-body);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  -webkit-tap-highlight-color:transparent;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,p,figure{margin:0}
button{font:inherit;color:inherit;cursor:pointer}
section[id]{scroll-margin-top:calc(var(--header-h) + 8px)}

:focus-visible{outline:3px solid var(--blue-dk);outline-offset:3px;border-radius:6px}
.top :focus-visible,.hero :focus-visible,.panel :focus-visible,.cta :focus-visible,
.foot :focus-visible,.sheet :focus-visible{outline-color:var(--amber)}

.wrap{width:min(100% - 40px,1180px);margin-inline:auto}
.ic{width:22px;height:22px;flex:none}

.skip{position:absolute;left:12px;top:-60px;z-index:300;background:var(--amber);color:var(--ink);
  padding:12px 18px;border-radius:12px;font-weight:700;transition:top .2s}
.skip:focus{top:12px}

/* ---------- Barra de progreso de carga ---------- */
.progress{display:none}
.js .progress{
  display:block;position:fixed;inset:0 0 auto 0;height:3px;z-index:250;pointer-events:none;
  background:linear-gradient(90deg,var(--blue),var(--amber));
  transform-origin:left;transform:scaleX(0);
  animation:load 1.6s cubic-bezier(.1,.6,.2,1) forwards;
}
.progress.is-done{animation:none;transform:scaleX(1);opacity:0;transition:transform .25s ease-out,opacity .4s .3s}
@keyframes load{to{transform:scaleX(.86)}}

/* ---------- Botones ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:52px;padding:0 22px;border-radius:16px;border:0;
  font-family:var(--f-body);font-weight:700;font-size:1.0625rem;line-height:1.1;text-align:center;
  transition:transform .18s var(--ease),filter .18s,background-color .2s,box-shadow .2s;
}
.btn:active{transform:scale(.98);filter:brightness(.93)}
.btn--lg{min-height:58px;width:100%}
.btn--sm{min-height:48px;padding:0 18px;font-size:1rem}
.btn--amber{background:var(--amber);color:var(--ink);box-shadow:0 10px 28px -8px rgba(255,184,28,.55)}
.btn--blue{background:var(--blue-dk);color:#fff;box-shadow:0 10px 28px -10px rgba(0,111,166,.6)}
.btn--ghost{background:rgba(255,255,255,.06);color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.34)}
.btn--ghost:active{background:rgba(255,255,255,.14)}
.btn.is-loading{pointer-events:none}
.btn.is-loading .ic{display:none}
.btn.is-loading::before{content:"";width:20px;height:20px;border-radius:50%;
  border:3px solid currentColor;border-right-color:transparent;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Header ---------- */
.top{position:sticky;top:0;z-index:60;padding-top:env(safe-area-inset-top);
  background:rgba(8,21,31,.95);-webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);transition:box-shadow .3s,background-color .3s}
.top.is-scrolled{background:rgba(8,21,31,.92);box-shadow:0 12px 30px -14px rgba(0,0,0,.6)}
.top__in{height:var(--header-h);width:min(100% - 32px,1180px);margin-inline:auto;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:10px;margin-right:auto;min-height:48px;color:#fff}
.mark{font-family:var(--f-display);font-weight:900;font-style:italic;font-size:1.75rem;letter-spacing:-.06em;line-height:1}
.mark span{color:var(--blue-lt)}
.brand__sub{font-size:.75rem;line-height:1.15;font-weight:600;color:var(--on-dark)}
.nav{display:none}
.nav-cta{display:none}
.menu-btn{width:48px;height:48px;border-radius:var(--r-sm);border:0;display:grid;place-items:center;
  background:rgba(255,255,255,.08);color:#fff;transition:transform .18s var(--ease),background-color .2s}
.menu-btn:active{transform:scale(.94);background:rgba(255,255,255,.16)}

/* ---------- Hero ---------- */
.hero{
  background:
    radial-gradient(90% 55% at 100% 0%,rgba(0,174,240,.26),transparent 60%),
    radial-gradient(70% 40% at 0% 100%,rgba(255,184,28,.08),transparent 60%),
    var(--ink);
  color:#fff;padding:28px 0 76px;
}
.hero__grid{display:grid;gap:32px}
.badge{display:inline-flex;align-items:center;gap:8px;padding:9px 14px 9px 12px;border-radius:999px;
  background:rgba(0,174,240,.14);box-shadow:inset 0 0 0 1px rgba(57,196,250,.4);
  color:#BDEBFF;font-weight:600;font-size:.9375rem;line-height:1.25}
.badge .ic{width:16px;height:16px;color:var(--amber)}
.hero h1{
  font-family:var(--f-display);font-weight:800;font-size:clamp(2.25rem,10.2vw,4.5rem);
  line-height:1.02;letter-spacing:-.03em;margin:20px 0 16px;text-wrap:balance;
}
.lead{font-size:1.125rem;line-height:1.6;color:var(--on-dark);max-width:34em}
.lead--dark{color:var(--muted)}
.actions{display:flex;flex-direction:column;gap:12px;margin-top:28px}
.actions--center{align-items:stretch}
.scope{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.scope li{padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.07);font-weight:600;font-size:.9375rem;color:#E3ECF2}

.media{position:relative;overflow:hidden;isolation:isolate;background:#D3DEE5}
.media img{width:100%;height:100%;object-fit:cover}
.js .media img{opacity:0;transition:opacity .6s var(--ease)}
.js .media.is-loaded img{opacity:1}
.js .media:not(.is-loaded)::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg,transparent 30%,rgba(255,255,255,.6) 50%,transparent 70%) 0 0/250% 100%;
  animation:shimmer 1.3s linear infinite;
}
.hero__media{background:#12293A}
.js .hero__media:not(.is-loaded)::before{background:linear-gradient(100deg,transparent 30%,rgba(255,255,255,.1) 50%,transparent 70%) 0 0/250% 100%}
@keyframes shimmer{from{background-position:120% 0}to{background-position:-120% 0}}

.hero__media{border-radius:var(--r-xl);aspect-ratio:1/.92;box-shadow:0 30px 60px -30px rgba(0,0,0,.7),inset 0 0 0 1px rgba(255,255,255,.08)}
.hero__media img{object-position:62% 40%}
.glass{background:rgba(8,21,31,.58);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.18);color:#fff;border-radius:999px;font-weight:600;font-size:.9375rem}
.hero__tag{position:absolute;z-index:2;left:14px;bottom:14px;display:flex;align-items:center;gap:10px;padding:11px 16px}
.led{width:10px;height:10px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 0 rgba(255,184,28,.6);animation:led 2.4s ease-out infinite}
@keyframes led{0%{box-shadow:0 0 0 0 rgba(255,184,28,.55)}70%,100%{box-shadow:0 0 0 10px rgba(255,184,28,0)}}

/* ---------- Placas (datos clave) ---------- */
.plates{position:relative;z-index:2;margin-top:-40px}
.plates ul{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.plates li{position:relative;background:var(--white);border-radius:var(--r-lg);padding:18px 16px 16px;
  box-shadow:0 18px 40px -20px rgba(8,21,31,.35),0 2px 6px rgba(8,21,31,.05)}
.plates li::after{content:"";position:absolute;top:14px;right:14px;width:8px;height:8px;border-radius:50%;
  background:var(--blue);box-shadow:0 0 0 3px rgba(0,174,240,.18)}
.plates b{display:block;font-family:var(--f-display);font-weight:800;font-size:1.375rem;letter-spacing:-.01em;line-height:1.1}
.plates span{display:block;margin-top:6px;font-size:.9375rem;line-height:1.35;color:var(--muted)}

/* ---------- Secciones ---------- */
.section{padding:72px 0}
.section--white{background:var(--white)}
.head{max-width:40rem;margin-bottom:32px}
h2{font-family:var(--f-display);font-weight:800;font-size:clamp(1.875rem,7.6vw,3rem);
  line-height:1.05;letter-spacing:-.025em;text-wrap:balance}
.head p{margin-top:14px;color:var(--muted)}

/* ---------- Tablero de servicios ---------- */
.panel{background:var(--panel);border-radius:var(--r-xl);padding:8px;
  box-shadow:0 34px 60px -34px rgba(8,21,31,.7),inset 0 0 0 1px rgba(255,255,255,.06)}
.panel li + li{border-top:1px solid rgba(255,255,255,.08)}
.breaker{
  width:100%;display:grid;grid-template-columns:auto 1fr auto;grid-template-areas:"sw title go" "desc desc desc";
  align-items:center;gap:10px 16px;
  min-height:88px;padding:18px 14px;border:0;border-radius:var(--r-md);background:transparent;color:#fff;text-align:left;
  transition:transform .18s var(--ease),background-color .2s;
}
.breaker:active{transform:scale(.98);background:rgba(255,255,255,.06)}
.breaker__txt{display:contents}
.switch{grid-area:sw}.breaker strong{grid-area:title}.breaker__txt span{grid-area:desc}.breaker__go{grid-area:go}
.breaker strong{display:block;font-family:var(--f-display);font-weight:700;font-size:1.1875rem;line-height:1.2;letter-spacing:-.01em}
.breaker__txt span{display:block;font-size:1rem;line-height:1.5;color:var(--on-dark)}
.breaker__go{color:#7E97A8;transition:transform .2s var(--ease)}
.breaker:active .breaker__go{transform:translateX(3px)}

.switch{position:relative;width:52px;height:30px;border-radius:999px;flex:none;
  background:rgba(0,174,240,.22);box-shadow:inset 0 0 0 1px rgba(57,196,250,.7);
  transition:background-color .4s,box-shadow .4s;transition-delay:calc(var(--i,0)*110ms)}
.knob{position:absolute;top:4px;left:4px;width:22px;height:22px;border-radius:50%;background:var(--blue-lt);
  transform:translateX(22px);box-shadow:0 0 14px rgba(57,196,250,.75);
  transition:transform .5s var(--spring),background-color .4s,box-shadow .4s;transition-delay:calc(var(--i,0)*110ms)}
/* Estado apagado hasta que el tablero entra en pantalla (solo con JS) */
.js .panel:not(.is-live) .switch{background:#1B3141;box-shadow:inset 0 0 0 1px rgba(255,255,255,.16)}
.js .panel:not(.is-live) .knob{transform:none;background:#7E97A8;box-shadow:none}

/* ---------- Confianza ---------- */
.split{display:grid;gap:32px;align-items:center}
.split__img{border-radius:var(--r-xl);aspect-ratio:4/3.3;box-shadow:0 30px 50px -30px rgba(8,21,31,.45)}
.split__txt .lead{margin-top:16px}
.checks{margin:24px 0 28px}
.checks li{display:flex;align-items:center;gap:14px;min-height:56px;padding:10px 0;font-weight:600;line-height:1.35;border-bottom:1px solid #DCE5EB}
.checks li:last-child{border-bottom:0}
.checks .ic{width:30px;height:30px;padding:6px;border-radius:50%;background:rgba(0,111,166,.12);color:var(--blue-dk)}

/* ---------- Galería ---------- */
.rail{display:flex;gap:14px;overflow-x:auto;padding:4px 20px 24px;scroll-snap-type:x mandatory;scroll-padding-inline:20px;
  -webkit-overflow-scrolling:touch;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.rail li{flex:0 0 78%;max-width:340px;aspect-ratio:4/5;border-radius:var(--r-lg);scroll-snap-align:start;
  box-shadow:0 24px 40px -26px rgba(8,21,31,.55)}
.cap{position:absolute;z-index:2;left:12px;bottom:12px;padding:10px 16px;border-radius:14px}

/* ---------- Contacto ---------- */
.cta{
  background:
    radial-gradient(80% 60% at 50% 0%,rgba(0,174,240,.3),transparent 65%),
    var(--ink);
  color:#fff;padding:80px 0;text-align:center;
}
.cta__in{max-width:40rem}
.cta__kicker{color:#8ADBFC;font-weight:600;font-size:1.0625rem;margin-bottom:14px}
.cta h2{color:#fff}
.cta .lead{margin:16px auto 0}

/* ---------- Footer ---------- */
.foot{background:#050E15;color:#A3B6C3;padding:44px 0 calc(110px + env(safe-area-inset-bottom));text-align:center;font-size:1rem}
.foot__in{display:grid;gap:18px;justify-items:center}
.foot .brand{margin:0}
.foot__tel{display:inline-flex;align-items:center;min-height:48px;padding:0 12px;color:#fff;font-weight:700;font-size:1.125rem}

/* ---------- WhatsApp flotante ---------- */
.float{
  position:fixed;z-index:70;right:16px;bottom:calc(16px + env(safe-area-inset-bottom));
  display:flex;align-items:center;gap:10px;height:56px;padding:0 22px 0 18px;border-radius:999px;
  background:var(--wa);color:#06210F;font-weight:800;font-size:1.0625rem;
  box-shadow:0 16px 34px -10px rgba(0,0,0,.5),0 0 0 1px rgba(255,255,255,.2) inset;
  transition:transform .3s var(--ease),opacity .3s,filter .18s;
}
.float:active{transform:scale(.96);filter:brightness(.93)}
.float.is-hidden{opacity:0;transform:translateY(24px) scale(.95);pointer-events:none}
.float.is-loading::before{content:"";width:20px;height:20px;border-radius:50%;border:3px solid currentColor;border-right-color:transparent;animation:spin .7s linear infinite}
.float.is-loading .ic{display:none}

/* ---------- Reveal al hacer scroll ---------- */
.js [data-reveal]{opacity:0;transform:translateY(18px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:calc(var(--i,0)*70ms)}
.js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- Bottom sheet ---------- */
.sheet-root{position:fixed;inset:0;z-index:100}
.sheet-root[hidden]{display:none}
.scrim{position:absolute;inset:0;background:rgba(4,10,16,.62);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  opacity:0;transition:opacity .32s ease}
.sheet{
  position:absolute;left:0;right:0;bottom:0;margin-inline:auto;width:100%;max-width:560px;
  max-height:90dvh;display:flex;flex-direction:column;outline:0;
  background:var(--sheet);color:#fff;border-radius:var(--r-xl) var(--r-xl) 0 0;
  box-shadow:0 -24px 60px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.1);
  transform:translateY(100%);transition:transform .44s var(--spring);will-change:transform;
}
.sheet-root.is-open .scrim{opacity:1}
.sheet-root.is-open .sheet{transform:translateY(0)}
.sheet__head{position:relative;flex:none;height:44px;touch-action:none;cursor:grab}
.grabber{position:absolute;left:50%;top:12px;width:44px;height:5px;margin-left:-22px;border-radius:99px;background:rgba(255,255,255,.3)}
.sheet__close{position:absolute;right:8px;top:0;width:48px;height:48px;border:0;background:none;border-radius:50%;
  display:grid;place-items:center;color:var(--on-dark);transition:transform .18s var(--ease),background-color .2s}
.sheet__close:active{transform:scale(.92);background:rgba(255,255,255,.1)}
.sheet__body{overflow-y:auto;overscroll-behavior:contain;padding:8px 20px calc(24px + env(safe-area-inset-bottom))}

.sheet__title{font-family:var(--f-display);font-weight:800;font-size:1.75rem;line-height:1.1;letter-spacing:-.02em;text-wrap:balance;padding-right:36px}
.sheet__desc{margin-top:12px;color:var(--on-dark)}
.sheet__list{margin:18px 0 24px}
.sheet__list li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.09);font-weight:600;line-height:1.4}
.sheet__list li:last-child{border-bottom:0}
.sheet__list .ic{width:22px;height:22px;margin-top:1px;color:var(--blue-lt)}
.sheet .actions{margin-top:0}

.menu-list{margin:4px 0 20px}
.menu-list a{display:flex;align-items:center;justify-content:space-between;min-height:60px;padding:0 6px;
  font-family:var(--f-display);font-weight:700;font-size:1.375rem;letter-spacing:-.01em;
  border-bottom:1px solid rgba(255,255,255,.09);border-radius:12px;transition:background-color .2s,transform .18s var(--ease)}
.menu-list a:active{background:rgba(255,255,255,.07);transform:scale(.98)}
.menu-list .ic{color:#7E97A8}

.sheet-root.is-open .stagger > *{animation:rise .5s var(--ease) backwards;animation-delay:calc(var(--s,0)*50ms + 120ms)}
@keyframes rise{from{opacity:0;transform:translateY(12px)}}

/* ---------- Tablet / escritorio ---------- */
@media (min-width:520px){
  .nav-cta{display:inline-flex}
  .actions{flex-direction:row;flex-wrap:wrap}
  .btn--lg{width:auto;padding:0 28px}
  .actions--center{justify-content:center}
  .sheet .actions{flex-direction:column}
  .sheet .btn--lg{width:100%}
}
@media (min-width:700px){
  .plates ul{grid-template-columns:repeat(4,1fr)}
  .rail li{flex-basis:46%}
}
@media (min-width:900px){
  :root{--header-h:76px}
  .menu-btn{display:none}
  .top__in{width:min(100% - 64px,1180px);gap:36px}
  .nav{display:flex;gap:6px}
  .nav a{display:inline-flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;font-weight:600;color:var(--on-dark);transition:color .2s,background-color .2s}
  .nav a:hover{color:#fff;background:rgba(255,255,255,.07)}
  .nav a:active{transform:scale(.98)}

  .hero{padding:72px 0 120px}
  .hero__grid{grid-template-columns:1.2fr .8fr;gap:56px;align-items:center}
  .hero__media{aspect-ratio:4/4.6}
  .plates{margin-top:-56px}
  .plates li{padding:24px 22px}
  .plates b{font-size:1.625rem}
  .section{padding:112px 0}
  .head{margin-bottom:44px}
  .panel{display:grid;grid-template-columns:1fr 1fr;padding:12px}
  .panel li + li{border-top:0}
  .panel li:nth-child(n+3){border-top:1px solid rgba(255,255,255,.08)}
  .panel li:nth-child(even){border-left:1px solid rgba(255,255,255,.08)}
  .breaker{padding:26px 22px;min-height:132px}
  .split{grid-template-columns:1fr 1fr;gap:80px}
  .split__img{aspect-ratio:4/4.4}
  .rail{display:grid;grid-template-columns:repeat(3,1fr);width:min(100% - 64px,1180px);margin-inline:auto;padding:0;overflow:visible;gap:20px}
  .rail li{flex:none;max-width:none;aspect-ratio:4/5}
  .cta{padding:120px 0}
  .foot__in{grid-template-columns:auto 1fr auto;justify-items:start;align-items:center;text-align:left}
  .foot__in p{justify-self:center}
  .foot{padding-bottom:44px;text-align:left}
  .btn:hover{filter:brightness(1.06)}
  .breaker:hover{background:rgba(255,255,255,.04)}
}

/* ---------- Accesibilidad de movimiento ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;transition-delay:0s !important}
  .js [data-reveal]{transform:none}
}