/* ==========================================================================
   EcoSyntek — Industrial North American Corporate Theme (EN, B2B)
   Light mode: default | Dark mode: prefers-color-scheme: dark
   ========================================================================== */

/* ---------- RESET ---------- */
* { box-sizing: border-box; }
html, body { height: 100%; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  background: #ffffff;
  color: #0b1224;
}

/* ---------- TOKENS ---------- */
:root{
  --na-navy: #0b2942;
  --na-slate: #2b3b4f;
  --na-steel: #e6eaef;
  --na-ink: #0b1224;
  --na-bg: #ffffff;
  --na-surface: #f7f9fc;
  --na-muted: #566376;
  --na-accent: #00A879;
  --na-blue: #2686e6;
  --shadow: 0 10px 30px -18px rgba(11,41,66,.35);

  --radius: 14px;
  --radius-sm: 10px;
  --radius-lg: 20px;

  --container: 1160px;
  --gutter: 1.25rem;
}

/* ---------- DARK MODE ---------- */
@media (prefers-color-scheme: dark){
  :root{
    --na-bg: #0a0f19;
    --na-surface: #0f1726;
    --na-ink: #f1f5f9;
    --na-slate: #dbe2ee;
    --na-muted: #a3b1c6;
    --na-steel: rgba(38,134,230,.22);
    --shadow: 0 14px 42px -18px rgba(38,134,230,.28);
  }
  body{
    background:
      radial-gradient(900px 600px at 80% -20%, rgba(38,134,230,.10), transparent 60%)
      var(--na-bg);
    color: var(--na-slate);
  }
}

/* ---------- ACCESSIBILITY ---------- */
.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}
.skip-nav{
  position:absolute; left:0; right:0; top:-40px; margin:0 auto; z-index:1000;
  padding:.5rem .75rem; max-width:240px;
  background: var(--na-accent); color:#052e2b; text-decoration:none; border-radius:0 0 10px 10px;
}
.skip-nav:focus{
  top:0;
  outline:2px solid var(--na-blue);
}

/* ---------- LAYOUT ---------- */
.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section{
  padding: 5rem 0;
}
.grid{
  display:grid;
  gap:1.25rem;
}
.grid.two{
  grid-template-columns: repeat(2, minmax(0,1fr));
}
.grid.three{
  grid-template-columns: repeat(3, minmax(0,1fr));
}
.grid.four{
  grid-template-columns: repeat(4, minmax(0,1fr));
}
@media (max-width: 960px){
  .grid.two,
  .grid.three,
  .grid.four{
    grid-template-columns: 1fr;
  }
}

/* ---------- HEADER ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255,255,255,.86);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--na-steel);
  transition: box-shadow .25s;
}
.site-header.scrolled{
  box-shadow: 0 2px 22px rgba(11,41,66,.15);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:86px;
}
.brand{
  display:flex;
  align-items:center;
  gap:.6rem;
  text-decoration:none;
}
.brand img{
  width:42px;
  height:42px;
  object-fit:contain;
  filter: drop-shadow(0 0 8px rgba(38,134,230,.25));
}
.brand .name{
  font-weight:800;
  font-size:1.2rem;
  letter-spacing:.4px;
  color:var(--na-ink);
}

.menu{
  display:flex;
  gap:1.1rem;
  align-items:center;
}
.menu a{
  color: var(--na-ink);
  text-decoration:none;
  font-weight:700;
  padding:.5rem .7rem;
  border-radius:10px;
}
.menu a:hover,
.menu a.active{
  background: linear-gradient(135deg,
    rgba(0,168,121,.12),
    rgba(38,134,230,.14)
  );
}
.menu-toggle{
  display:none;
}
.menu-icon{
  display:none;
  cursor:pointer;
  font-size:1.8rem;
  color:var(--na-ink);
}

@media (prefers-color-scheme: dark){
  .site-header{
    background: rgba(10,15,25,.88);
    border-bottom-color: rgba(56,189,248,.25);
  }
  .menu a{
    color: #eef2f7;
  }
}
@media (max-width: 960px){
  .menu-icon{
    display:block;
  }
  .menu{
    position:absolute;
    left:0;
    right:0;
    top:86px;
    background: var(--na-bg);
    border-top:1px solid var(--na-steel);
    display:none;
    flex-direction:column;
    padding:1rem;
  }
  .menu-toggle:checked ~ .menu{
    display:flex;
  }
}

/* ---------- HERO ---------- */
.hero{
  background: radial-gradient(800px 520px at 80% -20%, rgba(38,134,230,.12), transparent 60%);
  padding: 4.5rem 0;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:2rem;
  align-items:center;
}
.kicker{
  display:inline-block;
  font-weight:800;
  font-size:.9rem;
  letter-spacing:.08em;
  color:var(--na-accent);
  text-transform:uppercase;
}
h1{
  font-size:3rem;
  line-height:1.05;
  margin:.4rem 0 .6rem;
  background: linear-gradient(90deg, var(--na-ink), #1d3250);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero p{
  color: var(--na-muted);
  max-width: 58ch;
}
.hero-banner{
  display:flex;
  justify-content:flex-end;
}
.banner-img{
  width:520px;
  max-width:100%;
  height:auto;
  object-fit:contain;
  filter: drop-shadow(0 0 18px rgba(38,134,230,.2));
  transition: transform .35s, filter .35s;
}
.banner-img:hover{
  transform: translateY(-3px);
  filter: drop-shadow(0 0 26px rgba(0,168,121,.25));
}

/* Banner swap by theme */
.banner-img{
  content: url("img/banner.png");
}
@media (prefers-color-scheme: dark){
  .banner-img{
    content: url("img/banner_white.png");
  }
}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-block;
  text-decoration:none;
  border:none;
  border-radius:12px;
  padding:.85rem 1rem;
  font-weight:800;
  box-shadow: 0 10px 26px -12px rgba(0,168,121,.35);
  transition: transform .1s, box-shadow .25s, filter .2s;
}
.btn.primary{
  background: linear-gradient(135deg, var(--na-accent), #09c08c);
  color:#052e2b;
}
.btn.secondary{
  background: linear-gradient(135deg, #1f6fbd, var(--na-blue));
  color:#061422;
}
.btn.ghost{
  background: transparent;
  color: var(--na-ink);
  outline: 1px solid var(--na-steel);
}
.btn:hover{
  transform: translateY(-1px);
  filter: brightness(1.02);
}
.badge{
  border-radius:999px;
  padding:.4rem .8rem;
  font-size:.9rem;
}

/* ---------- SECTION HEAD ---------- */
.section-head h2{
  font-size:2.1rem;
  margin:0 0 .25rem;
  color:var(--na-ink);
}
.section-head p{
  margin:0;
  color:var(--na-muted);
}

/* ---------- CARDS & LISTS ---------- */
.card{
  background: var(--na-surface);
  border: 1px solid var(--na-steel);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}
.card h3{
  margin-top:0;
  color:var(--na-ink);
}

.list{
  list-style:none;
  margin:.5rem 0;
  padding:0;
}
.list li{
  position:relative;
  padding-left:1.6rem;
  margin:.45rem 0;
  color:var(--na-slate);
}
.list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.5rem;
  width:9px;
  height:9px;
  border-radius:2px;
  background: linear-gradient(135deg, var(--na-accent), var(--na-blue));
}

/* ---------- TILES (Products/Services) ---------- */
.tile{
  display:flex;
  flex-direction:column;
  gap:.75rem;
  min-height:360px;
}
.tile .img{
  height:170px;
  border-radius:12px;
  overflow:hidden;
  box-shadow:0 0 20px -10px rgba(38,134,230,.25);
}
.tile img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.tile p{
  color:var(--na-muted);
  margin:0;
}

.t-oxinova{
  background: radial-gradient(circle at 50% 30%, #e8eaff 0%, #cbd5ff 100%);
}
.t-ecosyn{
  background: radial-gradient(circle at 50% 30%, #e7f2ff 0%, #cde6ff 100%);
}
.t-greenox{
  background: radial-gradient(circle at 50% 30%, #e9fff6 0%, #bff5e1 100%);
}

/* ---------- KPIs ---------- */
.kpis{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1rem;
  background: linear-gradient(135deg, rgba(0,168,121,.09), rgba(38,134,230,.10));
  border:1px solid var(--na-steel);
  border-radius: var(--radius-lg);
  padding: 1.2rem;
}
.kpi{
  display:flex;
  flex-direction:column;
  gap:.1rem;
  text-align:center;
}
.kpi .n{
  font-weight:900;
  font-size:1.8rem;
  color:var(--na-ink);
}
.kpi .l{
  color:var(--na-muted);
  font-weight:600;
}
@media (max-width:960px){
  .kpis{
    grid-template-columns:1fr 1fr;
  }
}

/* ---------- INDUSTRIES ---------- */
.industries{
  display:grid;
  grid-template-columns:repeat(6,minmax(0,1fr));
  gap:.8rem;
}
.pill{
  background: var(--na-surface);
  border:1px solid var(--na-steel);
  border-radius:999px;
  padding:.5rem .8rem;
  text-align:center;
  font-weight:700;
  color:var(--na-slate);
}
@media (max-width:960px){
  .industries{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}

/* ---------- CTA BAND ---------- */
.cta{
  background: linear-gradient(135deg, var(--na-accent), #09c08c);
  color:#062c28;
  border-radius: var(--radius-lg);
  text-align:center;
  padding:2.2rem 1.2rem;
}
.cta h3{
  margin:0 0 .5rem;
  font-size:1.7rem;
  color:#062c28;
}
.cta p{
  max-width:600px;
  margin:.25rem auto 1rem;
}

/* ---------- FORMS ---------- */
input,
select,
textarea{
  width:100%;
  padding:.75rem .9rem;
  border-radius:10px;
  border:1px solid var(--na-steel);
  background:#fff;
  color:var(--na-ink);
}
@media (prefers-color-scheme: dark){
  input,
  select,
  textarea{
    background:#0f1726;
    color:#e8eef7;
    border-color: rgba(38,134,230,.24);
  }
}

/* ---------- FOOTER ---------- */
.site-footer{
  border-top:1px solid var(--na-steel);
  margin-top:3rem;
  padding:2.2rem 0;
  color:var(--na-muted);
  background:
    radial-gradient(700px 350px at 50% 0%, rgba(38,134,230,.08), transparent)
    var(--na-bg);
}
.footer-grid{
  display:grid;
  gap:1rem;
  grid-template-columns:2fr 1fr 1fr;
}
.footer-grid a{
  text-decoration:none;
  color:var(--na-muted);
}
.footer-grid a:hover{
  color: var(--na-blue);
}
@media (max-width:960px){
  .footer-grid{
    grid-template-columns:1fr;
  }
}

/* ==========================================================
   PRODUCT INFO MODAL (Ficha técnica responsive, centrada)
   ========================================================== */

/* Overlay: centramos el panel y damos aire arriba/abajo */
.product-hover {
  position: fixed;
  z-index: 999;
  inset: 0;
  background: rgba(11, 41, 66, 0.75);
  justify-content: center;
  align-items: center;
  padding: 2rem 1.25rem;

  /* MUY IMPORTANTE */
  display: none;
}

/* Panel técnico base */
.hover-content {
  background: var(--na-bg);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  /* más aire arriba para que el texto no quede pegado */
  padding: 2.5rem 1.75rem 2rem;
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
  text-align: left;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  position: relative;
  border: 1px solid var(--na-steel);
  overflow-y: auto;

  background-image:
    radial-gradient(circle at 20% 20%, rgba(0,168,121,.08) 0%, transparent 60%),
    radial-gradient(circle at 80% 0%, rgba(38,134,230,.08) 0%, transparent 70%);
  background-repeat: no-repeat;
  background-size: cover;
}

/* Versión expandida: ancho del contenido principal, altura dinámica */
.techsheet-wide {
  background-color: var(--na-bg);
  background-image:
    radial-gradient(circle at 20% 20%, rgba(0,168,121,.08) 0%, transparent 60%),
    radial-gradient(circle at 80% 0%, rgba(38,134,230,.08) 0%, transparent 70%);
  border: 1px solid var(--na-steel);
  box-shadow: 0 30px 80px rgba(0,0,0,.6);

  max-width: var(--container);
  width: 100%;

  /* altura natural del contenido, pero con límite para que nunca se salga */
  height: auto;
  max-height: 90vh;
  overflow-y: auto;

  border-radius: var(--radius);
  padding: 3rem 2rem 2.5rem;
}

/* Tablet / laptop chica */
@media (max-width: 900px){
  .techsheet-wide {
    max-width: 100%;
    padding: 2rem 1rem 1.5rem;
    border-radius: var(--radius-lg);
  }
}

/* Móvil: usamos el mismo límite visual de 90vh */
@media (max-width: 640px){
  .techsheet-wide {
    max-height: 90vh;
    padding: 2rem 1rem 1.5rem;
  }
}

/* Dark mode del panel */
@media (prefers-color-scheme: dark){
  .hover-content,
  .techsheet-wide{
    background-color: var(--na-bg);
    background-image:
      radial-gradient(circle at 20% 20%, rgba(0,168,121,.14) 0%, transparent 60%),
      radial-gradient(circle at 80% 0%, rgba(38,134,230,.16) 0%, transparent 70%);
    border-color: rgba(38,134,230,.24);
    box-shadow: 0 40px 120px rgba(0,0,0,.9),
                0 0 40px rgba(38,134,230,.4) inset;
  }
}

/* Botón X */
.close-hover {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 1.5rem;
  font-weight: 700;
  cursor: pointer;
  color: #b55eff;
  line-height: 1;
  user-select: none;
  text-shadow: 0 2px 6px rgba(0,0,0,.4);
}
.close-hover:hover {
  filter: brightness(1.15);
}

/* ----------------------------------------------------------
   Layout interno de la ficha técnica
   ---------------------------------------------------------- */

/*
  Imagen/video ahora toman más espacio (hasta 380px),
  y el texto se alinea con buen aire arriba.
*/
.techsheet-layout {
  display: grid;
  grid-template-columns: minmax(300px,380px) 1fr;
  gap: 2rem 2rem;
  align-items: flex-start;
  /* dejamos min-height natural para que la tarjeta ajuste su propio alto */
  min-height: auto;
}

/* En pantallas <=900px: 1 sola columna,
   el texto ocupa todo el ancho disponible */
@media (max-width: 900px){
  .techsheet-layout {
    grid-template-columns: 1fr;
  }
}

/* Columna izquierda (imagen + video) */
.techsheet-media {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: .25rem;
}

.techsheet-image {
  width: 100%;
  max-width: 380px;
  border-radius: var(--radius);
  box-shadow: 0 14px 30px rgba(0,0,0,.25);
  border: 1px solid var(--na-steel);
  background-color: #fff;
  object-fit: cover;
}

@media (prefers-color-scheme: dark){
  .techsheet-image{
    background-color: #0f1726;
    border-color: rgba(38,134,230,.24);
  }
}

.video-block {
  width: 100%;
  max-width: 380px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 14px 30px rgba(0,0,0,.25);
  border: 1px solid var(--na-steel);
  background-color: #000;
  aspect-ratio: 16 / 9;
  position: relative;
}

@media (prefers-color-scheme: dark){
  .video-block{
    border-color: rgba(38,134,230,.24);
  }
}

.video-frame {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  background-color: #000;
}

/* Columna derecha (texto) */
.techsheet-body {
  min-width: 0;
  width: 100%;
  max-width: 100%;
  color: var(--na-ink);
  padding-top: .25rem; /* aire superior para que no quede pegado al top */
}
.techsheet-body h4 {
  margin-top: 0;
  margin-bottom: .75rem;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--na-ink);
  line-height: 1.3;
}
.techsheet-body .tech-desc {
  margin: 0 0 1rem;
  font-size: .95rem;
  line-height: 1.5;
  color: var(--na-muted);
}
.techsheet-body .use-cases,
.techsheet-body .target {
  margin: 0 0 1rem;
  font-size: .9rem;
  line-height: 1.5;
  color: var(--na-muted);
  font-weight: 500;
}

/* Lista de especificaciones técnicas */
.spec-list {
  list-style: none;
  padding: .9rem 1rem;
  margin: 1.25rem 0 0;
  background: var(--na-surface);
  border: 1px solid var(--na-steel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-size: .9rem;
  line-height: 1.45;
}
.spec-list li {
  display: grid;
  grid-template-columns: minmax(140px, auto) 1fr;
  column-gap: .75rem;
  row-gap: .4rem;
  padding: .6rem 0;
  color: var(--na-slate);
  border-bottom: 1px solid var(--na-steel);
}
.spec-list li:last-child {
  border-bottom: none;
}
.spec-list li span {
  font-weight: 600;
  color: var(--na-ink);
  font-size: .9rem;
}

 /* Selector de país en header */
    .region-switcher {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      margin-left: .5rem;
    }
    .region-switcher label {
      font-size: 0.75rem;
      line-height: 1;
      color: var(--na-muted, #94a3b8);
    }
    .region-switcher select {
      font-family: inherit;
      font-size: 0.75rem;
      line-height: 1.2;
      padding: 0.4rem 0.5rem;
      border-radius: 6px;
      border: 1px solid rgba(0,0,0,0.2);
      background-color: #fff;
      color: #0b2942;
      cursor: pointer;
    }

    @media (max-width: 480px) {
      .region-switcher {
        flex-direction: column;
        align-items: flex-start;
        margin-top: .5rem;
        margin-left: 0;
      }
      .region-switcher label {
        font-size: 0.7rem;
      }
      .region-switcher select {
        font-size: 0.7rem;
      }
    }

@media (prefers-color-scheme: dark){
  .spec-list{
    background: #0f1726;
    border-color: rgba(38,134,230,.24);
    box-shadow: 0 14px 30px -10px rgba(38,134,230,.4);
  }
  .spec-list li{
    color: var(--na-slate);
    border-bottom-color: rgba(38,134,230,.24);
  }
  .spec-list li span{
    color: var(--na-ink);
  }
}