/* ══════════════════════════════════════════════════════════════════════
   PROEFICAZ CLIMATIZACIÓN — sitio público
   Estilo minimalista: mucho aire, una sola tinta fuerte (el navy del
   logo), bordes de 1 px y casi nada de sombra. El copo de nieve queda
   como sello discreto: en las etiquetas, en las viñetas y cayendo muy
   suave sobre el encabezado.

   Paleta del logo:
     navy    #14205A   textos fuertes y botones
     marino  #2E3B84   enlaces y acentos
     cielo   #4EA3DC   copo de nieve, detalles
     rojo    #A2231D   solo para errores
   ══════════════════════════════════════════════════════════════════════ */

:root{
  --navy:#14205A;
  --navy-hondo:#0E1738;
  --marino:#2E3B84;
  --cielo:#4EA3DC;
  --hielo:#9CCDEE;
  --papel:#FFFFFF;
  --papel-2:#F7F9FC;
  --rojo:#A2231D;
  --tinta:#161F33;
  --gris-600:#5A6474;
  --gris-500:#767F8D;
  --gris-400:#9AA2AE;
  --linea:#E7EBF1;
  --linea-2:#EFF2F7;

  --contenedor:1120px;
  --fuente:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --titulos:"Barlow","Inter",system-ui,sans-serif;
  --r:14px;
  --r-gr:20px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{
  margin:0;font-family:var(--fuente);color:var(--tinta);background:var(--papel);
  line-height:1.72;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3{text-wrap:balance;font-weight:700}
:focus-visible{outline:2px solid var(--cielo);outline-offset:3px;border-radius:4px}

@keyframes girar{to{transform:rotate(360deg)}}
@keyframes correr{to{transform:translateX(-50%)}}

/* ── Botones ─────────────────────────────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  padding:.85rem 1.6rem;font-weight:600;font-size:.94rem;
  border:1px solid transparent;border-radius:999px;cursor:pointer;
  font-family:var(--fuente);transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-solido{background:var(--navy);color:#fff}
.btn-solido:hover{background:var(--marino)}
.btn-hielo{background:#fff;color:var(--navy)}
.btn-hielo:hover{background:var(--papel-2)}
.btn-vidrio{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-vidrio:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-linea{background:transparent;color:var(--navy);border-color:var(--linea)}
.btn-linea:hover{border-color:var(--navy)}
.btn.ancho{width:100%}

/* ── Cinta superior ──────────────────────────────────────────────────── */
.cinta{
  background:var(--papel-2);color:var(--gris-500);text-align:center;
  padding:.5rem 1rem;font-size:.71rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;
  display:flex;align-items:center;justify-content:center;gap:.8rem;
  border-bottom:1px solid var(--linea-2);
}
.cinta-copo{width:12px;height:12px;color:var(--cielo);flex:none}

/* ── Navbar ──────────────────────────────────────────────────────────── */
#navbar{
  position:sticky;top:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;gap:1.5rem;
  padding:.85rem clamp(1rem,4vw,2.5rem);
  background:rgba(255,255,255,.9);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .25s ease,padding .25s ease;
}
#navbar.compacto{border-bottom-color:var(--linea);padding:.6rem clamp(1rem,4vw,2.5rem)}
.nav-logo img{height:36px;width:auto;object-fit:contain;mix-blend-mode:multiply}
.nav-links{display:flex;align-items:center;gap:2rem}
.nav-links a{font-size:.92rem;font-weight:500;color:var(--gris-600);transition:color .2s}
.nav-links a:hover{color:var(--navy)}
.nav-cta{background:var(--navy);color:#fff!important;padding:.55rem 1.15rem;border-radius:999px}
.nav-cta:hover{background:var(--marino)}
.nav-acceso{color:var(--navy)!important;font-weight:600!important}
.hamburguesa{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:.4rem;cursor:pointer}
.hamburguesa span{width:22px;height:1.8px;background:var(--navy);border-radius:2px;transition:.3s}
.hamburguesa.abierto span:nth-child(1){transform:translateY(6.8px) rotate(45deg)}
.hamburguesa.abierto span:nth-child(2){opacity:0}
.hamburguesa.abierto span:nth-child(3){transform:translateY(-6.8px) rotate(-45deg)}

/* ── Hero ────────────────────────────────────────────────────────────── */
.hero{
  position:relative;overflow:hidden;color:#fff;background:var(--navy-hondo);
  padding:clamp(4.5rem,10vw,8.5rem) clamp(1rem,4vw,2.5rem);
}
/* Foto de fondo. Para cambiarla, reemplace img/hero.jpg */
.hero-foto{position:absolute;inset:0;background:url("../img/hero.jpg") center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:rgba(14,23,56,.86)}
.lienzo-nieve{position:absolute;inset:0;width:100%;height:100%;z-index:2;pointer-events:none}
.hero-inner{position:relative;z-index:3;max-width:var(--contenedor);margin:0 auto}
.hero-texto{max-width:44rem}

.hero-etiqueta{
  display:inline-flex;align-items:center;gap:.55rem;margin:0 0 1.8rem;
  color:rgba(255,255,255,.72);font-size:.72rem;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;
}
.hero-etiqueta svg{width:13px;height:13px;color:var(--cielo);flex:none}

.hero h1{
  font-family:var(--titulos);font-size:clamp(2.1rem,5vw,3.6rem);line-height:1.08;
  margin:0 0 1.5rem;font-weight:700;letter-spacing:-.03em;
}
.marcado{color:var(--hielo)}
.hero-sub{font-size:1.04rem;color:rgba(255,255,255,.74);max-width:34rem;margin:0 0 2.4rem;font-weight:400}
.hero-acciones{display:flex;gap:.7rem;flex-wrap:wrap}

.hero-chips{
  display:flex;flex-wrap:wrap;gap:.4rem 1.6rem;margin-top:2.6rem;
  padding-top:1.6rem;border-top:1px solid rgba(255,255,255,.14);
}
.hero-chips li{font-size:.83rem;color:rgba(255,255,255,.66);display:flex;align-items:center;gap:.5rem}
.hero-chips li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--cielo);flex:none}

/* ── Secciones ───────────────────────────────────────────────────────── */
.seccion{padding:clamp(4rem,8vw,7rem) clamp(1rem,4vw,2.5rem);position:relative}
.escarcha{background:var(--papel-2)}
.encabezado{max-width:640px;margin:0 auto clamp(2.6rem,5vw,3.6rem);text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;margin:0 0 1rem;
  font-size:.72rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--gris-400);
}
.eyebrow svg{width:13px;height:13px;color:var(--cielo);flex:none}
.titulo{
  font-family:var(--titulos);font-size:clamp(1.75rem,3.2vw,2.5rem);line-height:1.16;
  font-weight:700;color:var(--navy);margin:0 0 .9rem;letter-spacing:-.025em;
}
.titulo.blanco{color:#fff}
.subtitulo{color:var(--gris-500);font-size:1rem;margin:0;font-weight:400}
.kicker{
  display:inline-flex;align-items:center;gap:.5rem;margin:0 0 .9rem;
  font-size:.72rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--gris-400);
}
.kicker svg{width:13px;height:13px;color:var(--cielo)}
.kicker.claro{color:rgba(255,255,255,.55)}

/* ── Servicios ───────────────────────────────────────────────────────── */
.grid-servicios{
  max-width:var(--contenedor);margin:0 auto;
  display:grid;grid-template-columns:repeat(3,1fr);gap:2rem 1.8rem;
}
.servicio{display:flex;flex-direction:column}
.servicio-foto{overflow:hidden;border-radius:var(--r-gr);background:var(--papel-2);aspect-ratio:4/3}
.servicio-foto img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.8,.2,1)}
.servicio:hover .servicio-foto img{transform:scale(1.03)}
.servicio-cuerpo{padding:1.2rem .2rem 0}
.servicio-cuerpo h3{
  font-family:var(--titulos);font-size:1.12rem;color:var(--navy);margin:0 0 .45rem;
  letter-spacing:-.01em;
}
.servicio-cuerpo p{margin:0;color:var(--gris-500);font-size:.93rem}

/* ── Mantenimiento ───────────────────────────────────────────────────── */
.mtto{
  max-width:var(--contenedor);margin:clamp(3rem,6vw,5rem) auto 0;
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.8rem,4vw,3.5rem);align-items:center;
}
.mtto-foto{position:relative;border-radius:var(--r-gr);overflow:hidden;aspect-ratio:4/3}
.mtto-foto img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.mtto-texto h3{
  font-family:var(--titulos);font-size:clamp(1.4rem,2.4vw,1.9rem);color:var(--navy);
  margin:0 0 .9rem;letter-spacing:-.02em;
}
.mtto-parrafo{color:var(--gris-600);font-size:.98rem;margin:0 0 1.5rem}

/* Viñetas en forma de copo, en tamaño pequeño */
.lista-copos{margin:0 0 2rem;display:grid;gap:.75rem}
.lista-copos li{position:relative;padding-left:1.7rem;color:var(--gris-600);font-size:.94rem}
.lista-copos li::before{
  content:"";position:absolute;left:0;top:.42rem;width:14px;height:14px;
  background:var(--cielo);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='-50 -50 100 100'%3E%3Cg fill='none' stroke='black' stroke-width='6' stroke-linecap='round'%3E%3Cpath d='M0-44V44M-38-22L38 22M-38 22L38-22M0-15l-9-9M0-15l9-9M0 15l-9 9M0 15l9 9M-13-7l-12-3M-13-7l-3-12M13 7l12 3M13 7l3 12M-13 7l-12 3M-13 7l-3 12M13-7l12-3M13-7l3-12'/%3E%3C/g%3E%3C/svg%3E") center/contain no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='-50 -50 100 100'%3E%3Cg fill='none' stroke='black' stroke-width='6' stroke-linecap='round'%3E%3Cpath d='M0-44V44M-38-22L38 22M-38 22L38-22M0-15l-9-9M0-15l9-9M0 15l-9 9M0 15l9 9M-13-7l-12-3M-13-7l-3-12M13 7l12 3M13 7l3 12M-13 7l-12 3M-13 7l-3 12M13-7l12-3M13-7l3-12'/%3E%3C/g%3E%3C/svg%3E") center/contain no-repeat;
}
.lista-copos.claro li{color:rgba(255,255,255,.72)}
.lista-copos.claro li::before{background:var(--hielo)}

/* ── Marcas: cinta deslizante, logos sueltos ─────────────────────────── */
.cinta-logos{
  max-width:var(--contenedor);margin:0 auto;overflow:hidden;
  -webkit-mask:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);
  mask:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);
}
.cinta-pista{display:flex;width:max-content;animation:correr 52s linear infinite}
.cinta-logos:hover .cinta-pista{animation-play-state:paused}
.cinta-fila{display:flex;align-items:center;gap:clamp(2.4rem,5vw,4.5rem);padding-right:clamp(2.4rem,5vw,4.5rem)}
.logo-marca{flex:none;display:grid;place-items:center;height:60px}
.logo-marca img{
  max-height:46px;width:auto;object-fit:contain;
  filter:grayscale(1);opacity:.62;transition:opacity .25s ease,filter .25s ease;
}
.logo-marca:hover img{filter:none;opacity:1}

/* ── Clientes: logos sueltos en rejilla ──────────────────────────────── */
.grid-clientes{
  max-width:var(--contenedor);margin:0 auto;
  display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));
  gap:clamp(1.8rem,4vw,3rem) 1.5rem;align-items:center;justify-items:center;
}
.logo-cliente{display:grid;place-items:center;height:70px;width:100%}
.logo-cliente img{
  max-height:56px;max-width:82%;width:auto;object-fit:contain;
  filter:grayscale(1);opacity:.62;transition:opacity .25s ease,filter .25s ease;
}
.logo-cliente:hover img{filter:none;opacity:1}

/* ── Plataforma ──────────────────────────────────────────────────────── */
.plataforma{
  position:relative;overflow:hidden;color:#fff;background:var(--navy-hondo);
  padding:clamp(4rem,8vw,7rem) clamp(1rem,4vw,2.5rem);
}
.plataforma-grid{
  position:relative;z-index:3;max-width:var(--contenedor);margin:0 auto;
  display:grid;grid-template-columns:1fr .75fr;gap:clamp(2.5rem,6vw,4.5rem);align-items:center;
}
.plataforma-sub{color:rgba(255,255,255,.74);font-size:1rem;margin:0 0 1.8rem;max-width:34rem}
.plataforma-acciones{display:flex;gap:.7rem;flex-wrap:wrap}
.plataforma-visual{display:grid;place-items:center}

/* Teléfono, dibujado con una línea */
.mock-telefono{
  position:relative;width:min(268px,100%);
  border:1px solid rgba(255,255,255,.22);border-radius:36px;padding:10px;
}
.mock-muesca{
  position:absolute;top:18px;left:50%;transform:translateX(-50%);z-index:3;
  width:64px;height:5px;border-radius:999px;background:rgba(255,255,255,.3);
}
.mock-cuerpo{background:#fff;border-radius:28px;padding:1.6rem 1rem 1.1rem;color:var(--tinta)}
.mock-cab{display:grid;place-items:center;padding:.1rem 0 .8rem}
.mock-cab img{height:22px;width:auto;mix-blend-mode:multiply}
.mock-titulo{
  font-family:var(--titulos);font-weight:700;color:var(--navy);font-size:.85rem;
  padding-bottom:.55rem;margin-bottom:.75rem;border-bottom:1px solid var(--linea-2);
}
.mock-card{border:1px solid var(--linea);border-radius:12px;padding:.55rem .7rem;margin-bottom:.5rem}
.mock-card.activa{background:var(--navy);border-color:var(--navy);color:#fff}
.mock-card b{display:block;font-size:.72rem;font-weight:600}
.mock-card span{font-size:.67rem;opacity:.7}
.mock-botones{display:grid;grid-template-columns:1fr 1fr;gap:.45rem;margin-top:.85rem}
.mock-botones span{
  border:1px solid var(--linea);border-radius:10px;text-align:center;padding:.55rem .2rem;
  font-size:.65rem;font-weight:600;color:var(--navy);
}

/* ── Contacto ────────────────────────────────────────────────────────── */
.grid-contacto{
  max-width:var(--contenedor);margin:0 auto;
  display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(2rem,5vw,4rem);
}
.contacto-info h3{font-family:var(--titulos);color:var(--navy);margin:0 0 1.6rem;font-size:1.1rem;letter-spacing:.01em}
.contacto-item{display:flex;gap:.9rem;padding:1.1rem 0;border-top:1px solid var(--linea-2)}
.contacto-item:first-of-type{border-top:0;padding-top:0}
.ficha{width:22px;height:22px;flex:none;display:grid;place-items:center;color:var(--cielo);margin-top:.2rem}
.ficha svg{width:19px;height:19px}
.contacto-item strong{display:block;color:var(--navy);font-size:.92rem;font-weight:600;margin-bottom:.15rem}
.contacto-item a,.contacto-item span{display:block;font-size:.93rem;color:var(--gris-600)}
.contacto-item a:hover{color:var(--marino)}
.contacto-item .nota{font-size:.8rem;color:var(--gris-400)}

.redes{display:flex;gap:1.1rem;margin-top:1.8rem;padding-top:1.4rem;border-top:1px solid var(--linea-2)}
.redes a{color:var(--gris-400);transition:color .2s}
.redes a:hover{color:var(--navy)}
.redes svg{width:20px;height:20px}

.contacto-form{border:1px solid var(--linea);border-radius:var(--r-gr);padding:clamp(1.4rem,3vw,2.2rem)}
.contacto-form label{display:block;margin-bottom:1.1rem}
.contacto-form label span{display:block;font-size:.82rem;font-weight:500;color:var(--gris-500);margin-bottom:.4rem}
.contacto-form input,.contacto-form select,.contacto-form textarea{
  width:100%;padding:.75rem .9rem;border:1px solid var(--linea);border-radius:var(--r);
  font-family:var(--fuente);font-size:.94rem;background:#fff;color:var(--tinta);transition:border-color .2s;
}
.contacto-form textarea{resize:vertical}
.contacto-form input:focus,.contacto-form select:focus,.contacto-form textarea:focus{
  outline:none;border-color:var(--navy);
}
.contacto-form .fila{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.form-nota{margin:.9rem 0 0;font-size:.86rem;text-align:center;min-height:1.2rem;color:var(--gris-500)}
.form-nota.error{color:var(--rojo)}
.form-nota.ok{color:#137333}

/* ── Pie ─────────────────────────────────────────────────────────────── */
footer{
  background:var(--papel-2);border-top:1px solid var(--linea);
  color:var(--gris-600);padding:clamp(3rem,6vw,4.5rem) clamp(1rem,4vw,2.5rem) 1.6rem;
}
.pie-grid{max-width:var(--contenedor);margin:0 auto;display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:2.5rem}
.pie-marca img{height:40px;width:auto;margin-bottom:1.1rem;mix-blend-mode:multiply}
.pie-marca p{font-size:.89rem;margin:0;max-width:24rem;color:var(--gris-500)}
.pie-col h5{color:var(--navy);font-family:var(--titulos);font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;margin:0 0 1rem}
.pie-col li{margin-bottom:.55rem;font-size:.89rem}
.pie-col a:hover,.pie-marca a:hover{color:var(--navy)}
.pie-abajo{
  max-width:var(--contenedor);margin:2.8rem auto 0;padding-top:1.5rem;
  border-top:1px solid var(--linea);display:flex;justify-content:space-between;
  gap:1rem;flex-wrap:wrap;font-size:.79rem;color:var(--gris-400);
}

/* ── WhatsApp flotante ───────────────────────────────────────────────── */
.wa{
  position:fixed;right:20px;bottom:20px;z-index:90;width:52px;height:52px;border-radius:50%;
  background:#25D366;color:#fff;display:grid;place-items:center;transition:transform .2s ease;
  box-shadow:0 6px 18px rgba(16,24,40,.18);
}
.wa:hover{transform:scale(1.06)}

/* ── Aparición al hacer scroll ───────────────────────────────────────── */
.revelar{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
.revelar.visible{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  .revelar{opacity:1;transform:none;transition:none}
  .cinta-pista{animation:none;flex-wrap:wrap;width:auto;justify-content:center}
  .servicio:hover .servicio-foto img{transform:none}
  .wa:hover{transform:none}
  html{scroll-behavior:auto}
}

/* ── Responsivo ──────────────────────────────────────────────────────── */
@media (max-width:980px){
  .grid-servicios{grid-template-columns:repeat(2,1fr)}
  .plataforma-grid,.grid-contacto,.mtto{grid-template-columns:1fr}
  .plataforma-grid > div:first-child{text-align:center}
  .plataforma-grid .kicker,.plataforma-sub{margin-inline:auto}
  .plataforma-acciones{justify-content:center}
  .plataforma .lista-copos{max-width:30rem;margin-inline:auto;text-align:left}
  .mtto-foto{aspect-ratio:16/9}
  .pie-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .hamburguesa{display:flex}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;flex-direction:column;gap:0;
    background:#fff;padding:.6rem 1.4rem 1.4rem;border-bottom:1px solid var(--linea);
    box-shadow:0 14px 30px rgba(16,24,40,.07);
    transform:translateY(-150%);transition:transform .34s ease;align-items:stretch;
  }
  .nav-links.abierto{transform:none}
  .nav-links li{border-bottom:1px solid var(--linea-2)}
  .nav-links li:last-child{border:0}
  .nav-links a{display:block;padding:.85rem .2rem}
  .nav-cta{text-align:center;margin-top:.8rem}
  .nav-acceso{text-align:center}
  .cinta{font-size:.63rem;letter-spacing:.1em;gap:.5rem}
}
@media (max-width:620px){
  .grid-servicios{grid-template-columns:1fr;gap:1.8rem}
  .grid-clientes{grid-template-columns:repeat(2,1fr)}
  .logo-cliente{height:58px}
  .logo-cliente img{max-height:44px}
  .logo-marca img{max-height:38px}
  .contacto-form .fila{grid-template-columns:1fr;gap:0}
  .pie-grid{grid-template-columns:1fr;gap:2rem}
  .hero-acciones{width:100%}
  .hero-acciones .btn{flex:1 1 100%}
  .hero-chips{gap:.5rem}
  .hero-chips li{width:100%}
}