/* Válvulas LVM S.A.C.I. — hoja de estilos principal */

:root {
  --azul:        #0d3b82;
  --azul-osc:    #082a5e;
  --azul-prof:   #061f47;
  --azul-claro:  #2a63b8;
  --acero:       #5a6675;
  --acero-claro: #8d97a4;
  --gris-fondo:  #f5f7fa;
  --gris-linea:  #dde3ea;
  --blanco:      #ffffff;
  --texto:       #1b222d;
  --texto-suave: #515c6b;
  --max:         1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--texto);
  background: var(--blanco);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--azul); }

.contenedor { max-width: var(--max); margin: 0 auto; padding: 0 26px; }

/* ---------- Encabezado ---------- */

.barra {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gris-linea);
}

.barra-int {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 26px;
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.marca {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
  margin-right: auto;
}

.marca-logo { width: 62px; flex: none; }

.marca-txt strong {
  display: block;
  font-size: 16.5px;
  letter-spacing: .045em;
  color: var(--azul);
  line-height: 1.2;
  font-weight: 700;
}

.marca-txt span {
  display: block;
  font-size: 11.5px;
  color: var(--acero);
  letter-spacing: .02em;
}

.marca-valvula { height: 40px; width: auto; flex: none; margin-left: 6px; opacity: .95; }

.menu { display: flex; gap: 24px; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }

.menu a {
  text-decoration: none;
  color: var(--texto-suave);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}

.menu a:hover { color: var(--azul); border-bottom-color: var(--azul); }

.idioma {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
  color: var(--azul);
  border: 1px solid var(--gris-linea);
  border-radius: 4px;
  padding: 6px 12px;
  transition: background .15s, color .15s;
}

.idioma:hover { background: var(--azul); color: var(--blanco); }

/* ---------- Portada ---------- */

.portada {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 88% 15%, rgba(66,126,214,.40) 0%, rgba(66,126,214,0) 58%),
    linear-gradient(155deg, var(--azul-prof) 0%, var(--azul-osc) 45%, var(--azul) 100%);
  color: var(--blanco);
}

.portada-int {
  max-width: var(--max);
  margin: 0 auto;
  padding: 84px 26px 88px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, .78fr);
  gap: 44px;
  align-items: center;
}

.portada h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 4.3vw, 46px);
  line-height: 1.12;
  letter-spacing: -.015em;
  font-weight: 700;
}

.portada .lead {
  margin: 0;
  max-width: 620px;
  font-size: clamp(16.5px, 1.7vw, 19px);
  color: rgba(255,255,255,.86);
}

.sello {
  display: inline-block;
  margin-bottom: 24px;
  padding: 6px 15px;
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 40px;
  font-size: 12px;
  letter-spacing: .13em;
  text-transform: uppercase;
  font-weight: 600;
  color: rgba(255,255,255,.9);
}

.portada-datos { display: flex; gap: 42px; margin-top: 40px; flex-wrap: wrap; }

.portada-datos strong { display: block; font-size: 27px; font-weight: 700; line-height: 1.1; }

.portada-datos span { font-size: 13.5px; color: rgba(255,255,255,.72); letter-spacing: .02em; }

.portada-figura {
  width: 100%;
  max-width: 420px;
  margin: 0 0 0 auto;
}

.galeria {
  position: relative;
  width: 100%;
  aspect-ratio: 820 / 980;
}

.galeria img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  filter: drop-shadow(0 22px 34px rgba(0,0,0,.45));
}

.galeria img.activa { opacity: 1; }

.galeria-pie {
  margin: 18px 0 2px;
  text-align: center;
  font-size: 12.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 700;
  color: rgba(255,255,255,.82);
}

.galeria-pie span { transition: opacity .3s ease; }

@media (prefers-reduced-motion: reduce) {
  .galeria img { transition: none; }
}

.acciones { display: flex; gap: 13px; margin-top: 34px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 24px;
  border-radius: 5px;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  transition: transform .16s, background .16s, border-color .16s;
}

.btn:hover { transform: translateY(-2px); }
.btn-claro { background: var(--blanco); color: var(--azul-osc); }
.btn-borde { border: 1px solid rgba(255,255,255,.45); color: var(--blanco); }
.btn-borde:hover { border-color: var(--blanco); background: rgba(255,255,255,.1); }
.btn-azul { background: var(--azul); color: var(--blanco); }
.btn-azul:hover { background: var(--azul-osc); }

.btn .tag {
  font-size: 10px;
  letter-spacing: .1em;
  padding: 2px 6px;
  border-radius: 3px;
  background: rgba(0,0,0,.12);
}

.btn-borde .tag, .btn-azul .tag { background: rgba(255,255,255,.2); }

/* ---------- Secciones ---------- */

.seccion { padding: 84px 0; }
.seccion.alt { background: var(--gris-fondo); }
.seccion.oscura { background: var(--azul-prof); color: var(--blanco); }

.seccion h2 {
  margin: 0 0 12px;
  font-size: clamp(25px, 3vw, 34px);
  color: var(--azul-osc);
  letter-spacing: -.015em;
}

.seccion.oscura h2 { color: var(--blanco); }

.bajada { margin: 0 0 42px; color: var(--texto-suave); max-width: 740px; font-size: 18px; }
.seccion.oscura .bajada { color: rgba(255,255,255,.75); }

.linea { width: 52px; height: 3px; background: var(--azul); margin: 0 0 22px; border: 0; }
.seccion.oscura .linea { background: var(--azul-claro); }

.dos-columnas { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.dos-columnas p:last-child { margin-bottom: 0; }

.figura-empresa {
  margin: 0;
  background: var(--blanco);
  border: 1px solid var(--gris-linea);
  border-radius: 10px;
  padding: 26px;
}

.figura-empresa img { width: 100%; }
.figura-empresa figcaption { margin-top: 14px; font-size: 13px; color: var(--acero-claro); text-align: center; }

/* ---------- Productos ---------- */

.grilla { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 26px; }

.tarjeta {
  background: var(--blanco);
  border: 1px solid var(--gris-linea);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow .2s, transform .2s, border-color .2s;
}

.tarjeta:hover {
  box-shadow: 0 16px 36px rgba(8, 42, 94, .13);
  transform: translateY(-4px);
  border-color: #c3cede;
}

.tarjeta-foto { background: #fff; border-bottom: 1px solid var(--gris-linea); aspect-ratio: 900 / 660; overflow: hidden; }
.tarjeta-foto img { width: 100%; height: 100%; object-fit: contain; }

.tarjeta-cuerpo { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }

.tarjeta h3 { margin: 0 0 10px; font-size: 18.5px; color: var(--azul-osc); }
.tarjeta p { margin: 0 0 18px; font-size: 15px; color: var(--texto-suave); flex: 1; }

.ncm {
  display: inline-block;
  align-self: flex-start;
  font-family: "SF Mono", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  background: var(--gris-fondo);
  border: 1px solid var(--gris-linea);
  border-radius: 4px;
  padding: 4px 9px;
  color: var(--acero);
}

.pie-productos {
  margin-top: 38px;
  padding-top: 30px;
  border-top: 1px solid var(--gris-linea);
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.pie-productos p { margin: 0; color: var(--texto-suave); font-size: 15.5px; max-width: 560px; }

/* ---------- Calidad ---------- */

.calidad { display: grid; grid-template-columns: 1.3fr .7fr; gap: 46px; align-items: start; }

.panel-iso {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 10px;
  padding: 30px 28px;
}

.panel-iso h3 { margin: 0 0 8px; font-size: 20px; color: var(--blanco); }
.panel-iso > p { margin: 0 0 22px; color: rgba(255,255,255,.72); font-size: 15px; }

.panel-iso ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.16); }

.panel-iso li {
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,.16);
  font-size: 15px;
  color: rgba(255,255,255,.85);
}

.panel-iso a,
.panel-iso a:visited {
  color: #ffffff !important;
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid rgba(255,255,255,.4);
  transition: border-color .15s;
}

.panel-iso a:hover { border-bottom-color: #ffffff; }

.panel-iso .pdf {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 6px;
  border-radius: 3px;
  background: rgba(255,255,255,.2);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .09em;
  vertical-align: 1.5px;
  border: 0;
}

.panel-iso .pronto { margin-left: 8px; font-size: 12px; color: rgba(255,255,255,.45); font-style: italic; }

.cert-datos { margin: 20px 0 0; font-size: 12.5px; color: rgba(255,255,255,.55); line-height: 1.55; }

/* ---------- Rubros ---------- */

.rubros { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }

.rubro {
  background: var(--blanco);
  border: 1px solid var(--gris-linea);
  border-radius: 8px;
  padding: 20px 22px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--azul-osc);
  display: flex;
  align-items: center;
  gap: 12px;
}

.rubro::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--azul-claro);
  flex: none;
}

/* ---------- Contacto ---------- */

.contacto { display: grid; grid-template-columns: .85fr 1.15fr; gap: 46px; align-items: start; }

.contacto-datos { display: grid; gap: 30px; }

.mapa {
  border: 1px solid var(--gris-linea);
  border-radius: 10px;
  overflow: hidden;
  background: var(--gris-fondo);
}

.mapa iframe { display: block; width: 100%; height: 392px; border: 0; }

.mapa-pie {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 15px 18px;
  background: var(--blanco);
  border-top: 1px solid var(--gris-linea);
  font-size: 14px;
  color: var(--texto-suave);
}

.mapa-pie .btn { padding: 10px 18px; font-size: 12.5px; }

.dato h4 {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--acero-claro);
  font-weight: 700;
}

.dato p { margin: 0; font-size: 16px; line-height: 1.75; }
.dato a { text-decoration: none; }
.dato a:hover { text-decoration: underline; }

/* ---------- Pie ---------- */

.pie { background: #0b1421; color: #94a0b1; padding: 40px 0; font-size: 14px; }

.pie-int {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 26px;
  display: flex;
  justify-content: space-between;
  gap: 22px;
  flex-wrap: wrap;
  align-items: center;
}

.pie a { color: #c2ccd9; text-decoration: none; }
.pie a:hover { color: var(--blanco); }
.pie-enlaces { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---------- Responsivo ---------- */

@media (max-width: 940px) {
  .portada-int { grid-template-columns: 1fr; padding: 62px 26px 66px; }
  .portada-figura { order: -1; }
  .portada-figura { max-width: 250px; margin: 0 auto 10px; }
  .dos-columnas, .calidad, .contacto { grid-template-columns: 1fr; gap: 34px; }
  .mapa iframe { height: 300px; }
  .menu { gap: 16px; width: 100%; order: 3; }
  .seccion { padding: 58px 0; }
  .marca-valvula { display: none; }
}