:root{
  --azul-oscuro:#0A2540;
  --azul-profundo:#061A2E;
  --azul-principal:#005BFF;
  --azul-electrico:#00A8FF;
  --verde-riego:#18C964;
  --verde-oscuro:#11984B;
  --glass: rgba(255,255,255,0.95);
  --muted:#5B6472;
  --bg:#F4F7FB;
  --container:1000px;
  font-family:"Poppins", system-ui, -apple-system, "Segoe UI", Roboto, Arial;
}

*{
  box-sizing:border-box;
}

body{
  margin:0;
  background:linear-gradient(180deg,#ffffff 0%, #eef5ff 100%);
  color:#111827;
}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 18px;
}

/* --- Encabezado --- */
.site-header{
  background:var(--azul-oscuro);
  color:#fff;
  border-bottom:1px solid rgba(255,255,255,0.08);
  position:sticky;
  top:0;
  z-index:1000;
}

.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 18px;
}

.brand{
  font-size:1.5em;
  font-weight:800;
  color:#fff;
  letter-spacing:0.3px;
}

.nav a{
  margin-left:18px;
  color:#fff;
  text-decoration:none;
  font-weight:600;
  opacity:0.9;
}

.nav a:hover{
  color:var(--azul-electrico);
}

/* --- Hero --- */
.hero{
  padding:56px 0;
  background:linear-gradient(135deg, #ffffff 0%, #f2f8ff 100%);
}

.hero-grid{
  display:flex;
  gap:28px;
  align-items:center;
  flex-wrap:wrap;
}

.left{
  flex:1;
  min-width:280px;
}

.right{
  width:380px;
}

h1, h2, h3{
  color:var(--azul-oscuro);
}

.lead{
  font-size:1.08rem;
  color:#334155;
  line-height:1.6;
}

.product-img{
  width:100%;
  border-radius:16px;
  box-shadow:0 18px 45px rgba(10,37,64,0.16);
}

.benefits{
  list-style:none;
  padding:0;
  margin:18px 0;
}

.benefits li{
  padding:7px 0;
  font-weight:600;
  color:var(--muted);
}

.benefits li::before{
  content:"✓";
  color:var(--verde-riego);
  font-weight:900;
  margin-right:8px;
}

/* --- Botones --- */
.cta-row{
  margin-top:18px;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

.btn{
  display:inline-block;
  padding:13px 20px;
  border-radius:12px;
  text-decoration:none;
  font-weight:800;
  cursor:pointer;
  transition:all 0.25s ease;
}

.btn-primary{
  background:linear-gradient(135deg, var(--verde-riego), var(--verde-oscuro));
  color:#fff;
  border:1px solid var(--verde-riego);
  box-shadow:0 10px 25px rgba(24,201,100,0.25);
}

.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 30px rgba(24,201,100,0.32);
}

.btn-outline{
  background:transparent;
  color:var(--azul-principal);
  border:1px solid var(--azul-principal);
  padding:12px 18px;
  border-radius:12px;
}

.btn-outline:hover{
  background:var(--azul-principal);
  color:#fff;
}

/* --- Precio --- */
.price-card{
  margin-top:18px;
  background:#ffffff;
  padding:14px 18px;
  border-radius:14px;
  display:inline-block;
  box-shadow:0 10px 30px rgba(10,37,64,0.10);
  border:1px solid #e5eefb;
}

.price{
  font-weight:900;
  color:var(--verde-riego);
  font-size:1.7rem;
}

.small{
  color:var(--muted);
  font-size:0.92rem;
}

/* --- Secciones --- */
.section{
  padding:42px 0;
  background:transparent;
}

.center{
  text-align:center;
}

/* --- Carrusel --- */
.carousel{
  position:relative;
  width:100%;
  overflow:hidden;
  border-radius:16px;
  box-shadow:0 18px 45px rgba(10,37,64,0.14);
}

.carousel img{
  width:100%;
  height:auto;
  display:none;
  border-radius:16px;
}

.carousel img.active{
  display:block;
}

.carousel button{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  background:rgba(10,37,64,0.65);
  color:white;
  border:none;
  font-size:24px;
  cursor:pointer;
  padding:7px 12px;
  border-radius:50%;
}

.carousel button:hover{
  background:var(--azul-principal);
}

.carousel .prev{
  left:10px;
}

.carousel .next{
  right:10px;
}

/* --- Video --- */
.video-container{
  margin-top:22px;
  border-radius:16px;
  overflow:hidden;
  box-shadow:0 16px 40px rgba(10,37,64,0.14);
}

.video-overlay i{
  color:white;
  font-size:60px;
}

/* --- Formulario --- */
.form-section{
  padding:36px 0;
  background:#f4f7fb;
}

.form-wrap{
  display:flex;
  gap:24px;
  align-items:flex-start;
  flex-wrap:wrap;
}

.product-summary{
  width:320px;
  background:#fff;
  padding:18px;
  border-radius:16px;
  box-shadow:0 12px 32px rgba(10,37,64,0.10);
  border:1px solid #e5eefb;
}

.thumb{
  width:100%;
  border-radius:12px;
}

.order-form{
  flex:1;
  min-width:280px;
  background:#fff;
  padding:20px;
  border-radius:16px;
  box-shadow:0 12px 32px rgba(10,37,64,0.10);
  border:1px solid #e5eefb;
}

.field{
  margin-bottom:14px;
}

.field label{
  display:block;
  margin-bottom:6px;
  font-weight:700;
  color:var(--azul-oscuro);
}

.field input,
.field select,
.field textarea{
  width:100%;
  padding:12px;
  border-radius:10px;
  border:1px solid #dbe5f0;
  font-size:15px;
  outline:none;
}

.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--azul-principal);
  box-shadow:0 0 0 3px rgba(0,91,255,0.12);
}

.field textarea{
  resize:vertical;
}

.actions{
  margin-top:14px;
}

/* --- Footer --- */
.site-footer{
  background:var(--azul-oscuro);
  padding:20px 0;
  color:#fff;
  text-align:center;
  margin-top:28px;
}

/* --- WhatsApp flotante --- */
#whatsapp-chat{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:9999;
}

#whatsapp-chat a{
  display:flex;
  align-items:center;
  gap:10px;
  background:#25D366;
  color:#fff;
  padding:12px 16px;
  border-radius:999px;
  text-decoration:none;
  box-shadow:0 10px 30px rgba(0,0,0,0.18);
  font-weight:800;
}

#whatsapp-chat a:hover{
  background:#1ebe5d;
  transform:translateY(-2px);
}

#whatsapp-chat .wa-icon{
  font-size:18px;
}

/* --- Responsive tablet --- */
@media (max-width:900px){
  .hero-grid{
    flex-direction:column;
  }

  .right{
    width:100%;
  }

  .form-wrap{
    flex-direction:column;
  }
}

/* --- Responsive móvil --- */
@media (max-width:768px){
  .site-header .container{
    flex-direction:column;
    gap:10px;
  }

  .site-header .nav{
    text-align:center;
    margin-top:6px;
  }

  .site-header .nav a{
    display:inline-block;
    margin:5px 8px;
    font-size:14px;
  }

  .hero{
    padding:38px 0;
  }

  .hero-grid{
    display:flex;
    flex-direction:column;
    align-items:center;
    text-align:center;
  }

  .hero-grid .left,
  .hero-grid .right{
    width:100%;
  }

  .lead{
    font-size:1rem;
  }

  .cta-row{
    justify-content:center;
  }

  .btn{
    width:100%;
    text-align:center;
  }

  .price-card{
    margin-top:24px;
    width:100%;
  }

  #whatsapp-chat a{
    padding:11px 14px;
    font-size:14px;
  }
}