/* =========================================================
   B4D | Productos y Servicios de Limpieza
   Hoja de estilos principal — basada en el Manual de Marca
   ========================================================= */

:root{
  --verde:#3A913F;
  --verde-oscuro:#2e7733;
  --azul:#2C5697;
  --azul-oscuro:#1f3f72;
  --negro:#000000;
  --gris-900:#1a1a1a;
  --gris-700:#3d3d3d;
  --gris-500:#6b6b6b;
  --gris-300:#d6d6d6;
  --gris-100:#f4f6f8;
  --blanco:#ffffff;
  --wa:#25d366;

  --font-title:'Montserrat', system-ui, sans-serif;
  --font-body:'Open Sans', system-ui, sans-serif;

  --container: 1200px;
  --radius: 10px;
  --shadow: 0 8px 24px rgba(0,0,0,.06);
  --shadow-lg: 0 20px 50px rgba(0,0,0,.12);
  --transition: .25s ease;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  color:var(--gris-900);
  line-height:1.6;
  background:var(--blanco);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
ul{list-style:none}

h1,h2,h3,h4,h5{font-family:var(--font-title);color:var(--negro);line-height:1.2;font-weight:700}
h1{font-size:clamp(2rem, 4.2vw, 3.5rem);font-weight:800;letter-spacing:-.5px}
h2{font-size:clamp(1.6rem, 2.6vw, 2.4rem);font-weight:700}
h3{font-size:1.2rem;font-weight:600}
h4{font-size:1.05rem;font-weight:600}

p{color:var(--gris-700)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ========== BUTTONS ========== */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius);
  font-family:var(--font-title);font-weight:600;font-size:.95rem;
  border:2px solid transparent;cursor:pointer;
  transition:all var(--transition);
  text-align:center;
}
.btn--primary{background:var(--verde);color:#fff;border-color:var(--verde)}
.btn--primary:hover{background:var(--verde-oscuro);border-color:var(--verde-oscuro);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--azul);border-color:var(--azul)}
.btn--ghost:hover{background:var(--azul);color:#fff}
.btn--whatsapp{background:var(--wa);color:#fff;border-color:var(--wa)}
.btn--whatsapp:hover{background:#1eb858;border-color:#1eb858;transform:translateY(-2px)}
.btn--sm{padding:10px 18px;font-size:.85rem}

/* ========== HEADER ========== */
.header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--gris-300);
  transition:box-shadow var(--transition);
}
.header.scrolled{box-shadow:0 2px 12px rgba(0,0,0,.06)}
.header__inner{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;gap:24px}
.header__logo img{height:48px;width:auto}
.nav__list{display:flex;align-items:center;gap:28px}
.nav__list a{
  font-family:var(--font-title);font-weight:500;font-size:.92rem;
  color:var(--gris-900);position:relative;padding:6px 0;
}
.nav__list a:hover{color:var(--verde)}
.nav__list a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--verde);transition:width var(--transition);
}
.nav__list a:hover::after{width:100%}
.nav__staff{
  background:var(--azul);color:#fff !important;
  padding:10px 18px !important;border-radius:var(--radius);
}
.nav__staff:hover{background:var(--azul-oscuro);color:#fff !important}
.nav__staff::after{display:none}

.nav__toggle{
  display:none;flex-direction:column;gap:5px;
  background:none;border:none;cursor:pointer;padding:8px;
}
.nav__toggle span{width:26px;height:3px;background:var(--negro);border-radius:2px;transition:var(--transition)}

/* ========== HERO ========== */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(circle at 90% 10%, rgba(58,145,63,.08), transparent 50%),
    radial-gradient(circle at 10% 90%, rgba(44,86,151,.06), transparent 50%),
    var(--blanco);
  padding:80px 0 100px;
}
.hero__inner{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center}
.hero__tag{
  display:inline-block;font-family:var(--font-title);font-weight:600;
  font-size:.8rem;color:var(--verde);letter-spacing:2px;
  margin-bottom:20px;
}
.hero h1 span{color:var(--azul);display:block}
.hero p{font-size:1.1rem;margin:24px 0 32px;max-width:560px}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap}
.hero__chips{display:flex;gap:18px;flex-wrap:wrap;margin-top:36px;color:var(--gris-700);font-size:.9rem}
.hero__chips span{font-weight:600}

.hero__visual{display:flex;justify-content:center;align-items:center;position:relative;min-height:400px}
.hero__card{
  background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);
  padding:42px 48px;position:relative;z-index:2;
  display:flex;flex-direction:column;align-items:center;gap:20px;
  min-width:320px;
}
.hero__card-logo{max-width:200px;height:auto}
.hero__card-line{width:60px;height:3px;background:var(--verde);border-radius:2px}
.hero__card-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;width:100%;
  padding-top:6px;border-top:1px solid var(--gris-300);
}
.hero__card-stats > div{display:flex;flex-direction:column;text-align:center;gap:2px}
.hero__card-stats strong{font-family:var(--font-title);font-size:1.4rem;font-weight:800;color:var(--azul)}
.hero__card-stats span{font-size:.72rem;color:var(--gris-700);letter-spacing:.5px;text-transform:uppercase}

.hero__dots{
  position:absolute;width:220px;height:220px;right:-40px;bottom:-30px;
  background-image:radial-gradient(circle, rgba(58,145,63,.25) 1.5px, transparent 2px);
  background-size:14px 14px;z-index:1;border-radius:50%;
}
.hero__bracket{
  position:absolute;font-family:var(--font-title);font-weight:800;
  font-size:14rem;color:rgba(44,86,151,.08);line-height:1;
  left:-30px;top:50%;transform:translateY(-50%);z-index:1;letter-spacing:-20px;
  user-select:none;pointer-events:none;
}

/* ===== TESTIMONIOS ===== */
.testimonials .section__head{margin-bottom:48px}
.testimonial{
  background:#fff;padding:28px;border-radius:var(--radius);
  box-shadow:var(--shadow);position:relative;
  border-top:3px solid var(--verde);
  transition:transform var(--transition),box-shadow var(--transition);
}
.testimonial:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.testimonial::before{
  content:'"';position:absolute;top:8px;right:24px;
  font-family:var(--font-title);font-size:5rem;font-weight:800;
  color:var(--verde);opacity:.15;line-height:1;
}
.testimonial__quote{
  font-size:.98rem;color:var(--gris-900);line-height:1.65;
  margin-bottom:22px;font-style:italic;
}
.testimonial__author{display:flex;align-items:center;gap:12px}
.testimonial__avatar{
  width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,var(--verde),var(--azul));
  color:#fff;display:grid;place-items:center;
  font-family:var(--font-title);font-weight:700;font-size:.95rem;
  flex-shrink:0;
}
.testimonial__author strong{display:block;font-family:var(--font-title);color:var(--negro);font-size:.95rem}
.testimonial__author span{font-size:.78rem;color:var(--gris-500)}

/* ===== SERVICE ICON (mejorado, ya hay base arriba) ===== */
.service__icon svg{width:32px;height:32px;color:var(--verde)}

/* ===== SCROLL REVEAL ===== */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease, transform .6s ease}
.reveal.is-visible{opacity:1;transform:translateY(0)}

/* ===== TRUST BAND ===== */
.trust-band{
  background:var(--negro);color:#fff;padding:30px 0;
}
.trust-band .container{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;
}
.trust__item{display:flex;flex-direction:column;gap:4px}
.trust__item strong{
  font-family:var(--font-title);font-size:1.9rem;font-weight:800;color:#fff;
}
.trust__item span{font-size:.85rem;color:#aaa;letter-spacing:.5px}
@media (max-width:680px){.trust-band .container{grid-template-columns:repeat(2,1fr);gap:24px}}

/* ===== FAQ ===== */
.faq{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq__item{
  background:#fff;border-radius:var(--radius);
  padding:18px 22px;box-shadow:var(--shadow);
  border-left:4px solid var(--verde);transition:.2s ease;
}
.faq__item[open]{border-left-color:var(--azul);box-shadow:var(--shadow-lg)}
.faq__item summary{
  font-family:var(--font-title);font-weight:600;font-size:1rem;
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;
  color:var(--negro);
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{
  content:"+";font-size:1.5rem;color:var(--verde);font-weight:300;transition:.2s ease;
}
.faq__item[open] summary::after{content:"−";color:var(--azul)}
.faq__item p{margin-top:10px;color:var(--gris-700);line-height:1.6}

/* ========== SECTIONS ========== */
.section{padding:90px 0}
.section--light{background:var(--gris-100)}
.section--dark{background:var(--negro);color:#fff}
.section--dark p{color:#c7c7c7}
.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}

.section__head{max-width:760px;margin:0 auto 56px;text-align:center}
.section__head--light h2,.section__head--light p{color:#fff}
.eyebrow{
  display:inline-block;font-family:var(--font-title);font-weight:700;
  font-size:.78rem;letter-spacing:3px;color:var(--verde);
  margin-bottom:14px;text-transform:uppercase;
}
.eyebrow::before{content:"[ "}.eyebrow::after{content:" ]"}
.eyebrow--light{color:#7ed482}
.section__head p{font-size:1.05rem;margin-top:14px}

/* ========== GRIDS ========== */
.grid{display:grid;gap:24px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}

/* ========== CARDS ========== */
.card{
  background:#fff;padding:32px 28px;border-radius:var(--radius);
  box-shadow:var(--shadow);border-top:4px solid var(--verde);
  transition:transform var(--transition),box-shadow var(--transition);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card h3{color:var(--azul);margin-bottom:12px}
.mvv .card:nth-child(2){border-top-color:var(--azul)}
.mvv .card:nth-child(3){border-top-color:var(--negro)}

/* VALUES */
.values{margin-top:60px;background:#fff;padding:40px;border-radius:var(--radius);box-shadow:var(--shadow)}
.values__title{text-align:center;color:var(--azul);margin-bottom:28px}
.values__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px}
.value{padding:18px;border-left:3px solid var(--verde);background:var(--gris-100);border-radius:6px}
.value strong{display:block;color:var(--azul);font-family:var(--font-title);margin-bottom:4px}
.value span{font-size:.88rem;color:var(--gris-700)}

/* SERVICES */
.service{
  background:#fff;padding:36px 28px;border-radius:var(--radius);
  box-shadow:var(--shadow);text-align:center;
  transition:transform var(--transition);border-bottom:4px solid transparent;
}
.service:hover{transform:translateY(-6px);border-bottom-color:var(--verde)}
.service__icon{
  width:64px;height:64px;margin:0 auto 18px;
  background:var(--gris-100);color:var(--verde);
  border-radius:50%;display:grid;place-items:center;
  font-size:1.8rem;font-weight:700;
}
.service h3{margin-bottom:10px}

/* CATEGORIES (dark) */
.categories .category{
  background:#1a1a1a;padding:24px;border-radius:var(--radius);
  border-left:3px solid var(--verde);
  transition:border-color var(--transition),transform var(--transition);
}
.categories .category:hover{border-left-color:#7ed482;transform:translateX(4px)}
.categories .category strong{display:block;color:#fff;font-family:var(--font-title);margin-bottom:6px}
.categories .category span{color:#9a9a9a;font-size:.9rem}
.cta-row{display:flex;gap:14px;justify-content:center;margin-top:48px;flex-wrap:wrap}

/* AUDIENCE */
.audience{
  background:#fff;padding:28px;border-radius:var(--radius);
  box-shadow:var(--shadow);border-top:3px solid var(--azul);
}
.audience h4{color:var(--azul);margin-bottom:8px}

/* ========== COTIZAR ========== */
.section--quote{
  background:linear-gradient(135deg,var(--azul) 0%,var(--azul-oscuro) 100%);
  color:#fff;
}
.section--quote h2,.section--quote h4{color:#fff}
.section--quote p{color:#d4def0}
.quote{display:grid;grid-template-columns:1fr 1.2fr;gap:60px;align-items:center}
.quote__info h2{font-size:clamp(1.8rem,3vw,2.6rem);margin-bottom:14px}
.quote__list{margin-top:24px;display:flex;flex-direction:column;gap:10px}
.quote__list li{color:#fff;font-weight:600}

.quote__form{
  background:#fff;padding:36px;border-radius:var(--radius);
  box-shadow:var(--shadow-lg);color:var(--gris-900);
  display:grid;grid-template-columns:repeat(2,1fr);gap:18px;
}
.field{display:flex;flex-direction:column;gap:6px}
.field--full,.quote__form .btn,.form__msg{grid-column:1/-1}
.field label{font-family:var(--font-title);font-weight:600;font-size:.85rem;color:var(--gris-900)}
.field input,.field select,.field textarea{
  padding:12px 14px;border:1px solid var(--gris-300);border-radius:8px;
  font-family:var(--font-body);font-size:.95rem;
  transition:border-color var(--transition),box-shadow var(--transition);
  background:#fff;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--verde);
  box-shadow:0 0 0 3px rgba(58,145,63,.15);
}
.form__msg{font-size:.9rem;color:var(--verde);font-weight:600;margin:0}
.form__msg.error{color:#c62828}

/* ========== CONTACTO ========== */
.contact__card{
  background:#fff;padding:32px 28px;border-radius:var(--radius);
  box-shadow:var(--shadow);text-align:center;
  border-bottom:3px solid var(--verde);
}
.contact__card h4{color:var(--azul);margin-bottom:8px}
.contact__card p{margin-bottom:16px;font-weight:600}

/* ========== FOOTER ========== */
.footer{background:var(--negro);color:#c7c7c7;padding-top:60px}
.footer__inner{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;
}
.footer__brand img{height:50px;margin-bottom:16px;filter:brightness(1)}
.footer__brand p{color:#9a9a9a;max-width:340px;font-size:.95rem}
.footer__col h5{color:#fff;font-family:var(--font-title);margin-bottom:14px;letter-spacing:.5px}
.footer__col ul li{margin-bottom:8px;font-size:.92rem}
.footer__col a:hover{color:#7ed482}
.footer__bottom{
  border-top:1px solid #2a2a2a;padding:20px 0;
  font-size:.85rem;color:#7a7a7a;
}
.footer__bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

/* ========== WHATSAPP FLOAT ========== */
.wa-float{
  position:fixed;right:24px;bottom:24px;z-index:90;
  background:var(--wa);color:#fff;
  padding:14px 22px;border-radius:50px;
  font-family:var(--font-title);font-weight:600;
  box-shadow:0 8px 24px rgba(37,211,102,.4);
  transition:transform var(--transition);
}
.wa-float:hover{transform:scale(1.05);color:#fff}
.wa-float::before{
  content:"";display:inline-block;width:18px;height:18px;margin-right:8px;
  background:#fff;
  -webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M.057 24l1.687-6.163a11.867 11.867 0 01-1.587-5.946C.16 5.335 5.495 0 12.05 0a11.81 11.81 0 018.413 3.488 11.824 11.824 0 013.48 8.414c-.003 6.557-5.338 11.892-11.893 11.892a11.9 11.9 0 01-5.688-1.448L.057 24zm6.597-3.807c1.676.995 3.276 1.591 5.392 1.592 5.448 0 9.886-4.434 9.889-9.885.002-5.462-4.415-9.89-9.881-9.892-5.452 0-9.887 4.434-9.889 9.884a9.86 9.86 0 001.51 5.26l-.999 3.648 3.978-.607zm11.387-5.464c-.074-.124-.272-.198-.57-.347-.297-.149-1.758-.868-2.031-.967-.272-.099-.47-.149-.669.149-.198.297-.768.967-.941 1.165-.173.198-.347.223-.644.074-.297-.149-1.255-.462-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.297-.347.446-.521.151-.172.2-.296.3-.495.099-.198.05-.372-.025-.521-.075-.148-.669-1.611-.916-2.206-.242-.579-.487-.501-.669-.51l-.57-.01c-.198 0-.52.074-.792.372s-1.04 1.016-1.04 2.479 1.065 2.876 1.213 3.074c.149.198 2.095 3.2 5.076 4.487.709.306 1.263.489 1.694.626.712.226 1.36.194 1.872.118.571-.085 1.758-.719 2.006-1.413.248-.695.248-1.29.173-1.414z'/></svg>") no-repeat center / contain;
          mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M.057 24l1.687-6.163a11.867 11.867 0 01-1.587-5.946C.16 5.335 5.495 0 12.05 0a11.81 11.81 0 018.413 3.488 11.824 11.824 0 013.48 8.414c-.003 6.557-5.338 11.892-11.893 11.892a11.9 11.9 0 01-5.688-1.448L.057 24zm6.597-3.807c1.676.995 3.276 1.591 5.392 1.592 5.448 0 9.886-4.434 9.889-9.885.002-5.462-4.415-9.89-9.881-9.892-5.452 0-9.887 4.434-9.889 9.884a9.86 9.86 0 001.51 5.26l-.999 3.648 3.978-.607zm11.387-5.464c-.074-.124-.272-.198-.57-.347-.297-.149-1.758-.868-2.031-.967-.272-.099-.47-.149-.669.149-.198.297-.768.967-.941 1.165-.173.198-.347.223-.644.074-.297-.149-1.255-.462-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.297-.347.446-.521.151-.172.2-.296.3-.495.099-.198.05-.372-.025-.521-.075-.148-.669-1.611-.916-2.206-.242-.579-.487-.501-.669-.51l-.57-.01c-.198 0-.52.074-.792.372s-1.04 1.016-1.04 2.479 1.065 2.876 1.213 3.074c.149.198 2.095 3.2 5.076 4.487.709.306 1.263.489 1.694.626.712.226 1.36.194 1.872.118.571-.085 1.758-.719 2.006-1.413.248-.695.248-1.29.173-1.414z'/></svg>") no-repeat center / contain;
}

/* ========== PAGE HERO ========== */
.page-hero{
  background:linear-gradient(135deg,var(--azul) 0%,var(--azul-oscuro) 100%);
  padding:80px 0;text-align:center;
}
.page-hero .eyebrow{color:#7ed482}
.page-hero h1{color:#fff;font-size:clamp(1.8rem,3.5vw,3rem)}
.page-hero p{color:#d4def0;font-size:1.1rem;margin-top:16px;max-width:620px;margin-left:auto;margin-right:auto}

/* ========== NAV ACTIVE ========== */
.nav__list a.active{color:var(--verde)}
.nav__list a.active::after{width:100%}

/* ========== HOME SPLIT (Nosotros preview) ========== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split__text h2{margin-bottom:16px}
.split__text p{margin-bottom:28px}
.mvv-mini{display:flex;flex-direction:column;gap:16px}
.mvv-mini > div{
  background:#fff;padding:20px 24px;border-radius:var(--radius);
  box-shadow:var(--shadow);border-left:4px solid var(--verde);
}
.mvv-mini > div:nth-child(2){border-left-color:var(--azul)}
.mvv-mini > div:nth-child(3){border-left-color:var(--negro)}
.mvv-mini h4{color:var(--azul);margin-bottom:4px}
.mvv-mini p{font-size:.9rem;color:var(--gris-700);margin:0}

/* ========== HOME CTA STRIP ========== */
.cta-strip{
  background:linear-gradient(135deg,var(--verde) 0%,var(--verde-oscuro) 100%);
  padding:70px 0;text-align:center;
}
.cta-strip h2{color:#fff;margin-bottom:14px}
.cta-strip p{color:rgba(255,255,255,.85);font-size:1.05rem;margin-bottom:32px}
.cta-strip .btn--ghost{border-color:#fff;color:#fff}
.cta-strip .btn--ghost:hover{background:#fff;color:var(--verde)}

/* ========== RESPONSIVE ========== */
@media (max-width:960px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .hero__inner{grid-template-columns:1fr;text-align:center}
  .hero__cta{justify-content:center}
  .hero__chips{justify-content:center}
  .quote{grid-template-columns:1fr;gap:32px}
  .footer__inner{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
}
@media (max-width:680px){
  .page-hero{padding:50px 0}
  .nav{
    position:fixed;top:78px;left:0;right:0;
    background:#fff;padding:24px;
    transform:translateY(-150%);transition:transform var(--transition);
    box-shadow:0 8px 20px rgba(0,0,0,.08);
  }
  .nav.open{transform:translateY(0)}
  .nav__list{flex-direction:column;align-items:stretch;gap:14px}
  .nav__toggle{display:flex}
  .grid--4,.grid--3{grid-template-columns:1fr}
  .quote__form{grid-template-columns:1fr}
  .section{padding:60px 0}
  .hero{padding:50px 0 70px}
  .hero__card{padding:40px 30px}
  .hero__card-bracket,.hero__card-num{font-size:6rem}
  .footer__inner{grid-template-columns:1fr;text-align:center}
  .footer__brand p{margin:0 auto}
  .wa-float span{display:none}
  .wa-float{padding:14px 18px}
}