/* Minisitio Desengrase · Tierra Tech de México
   Referencia visual: ../../assets/referencia/mockup_del_minisitio_tierra_tech.png */

:root {
  --negro: #000000;
  --texto: #1f1f1f;
  --texto-suave: #4d4d4d;
  --gris-claro: #f3f3f3;
  --gris-borde: #e4e4e4;
  --blanco: #ffffff;
  --amarillo: #f8c038;   /* amarillo del logo */
  --naranja: #cc8400;    /* botones e íconos del mockup */
  --naranja-hover: #b87500;
  --crema: #fdf3dd;      /* fondo de badges de ícono */
  --fuente: Calibri, "Carlito", "Segoe UI", Arial, sans-serif;
  --ancho: 1120px;
  --radio: 10px;
  --alto-header: 72px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--alto-header) + 12px);
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  font-family: var(--fuente);
  font-size: 17px;
  line-height: 1.5;
  color: var(--texto);
  background: var(--blanco);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }

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

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

:focus-visible { outline: 3px solid var(--naranja); outline-offset: 3px; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  font: inherit;
  font-weight: 700;
  font-size: 17px;
  line-height: 1;
  color: var(--blanco);
  background: var(--naranja);
  border: 0;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .15s ease;
}
.btn:hover { background: var(--naranja-hover); }
.btn .flecha { font-size: 19px; line-height: 1; }
.btn--sm { padding: 10px 18px; font-size: 15px; }
.btn--amarillo { background: var(--amarillo); color: var(--negro); }
.btn--amarillo:hover { background: #e9b12a; }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--blanco);
  border-bottom: 1px solid var(--gris-borde);
}
.header__inner {
  height: var(--alto-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.header__logo img { width: 230px; height: auto; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav__links {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--texto);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.nav__links a:hover,
.nav__links a[aria-current="true"] { border-bottom-color: var(--amarillo); }

.nav__toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--gris-borde);
  background: var(--blanco);
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  display: block; width: 20px; height: 2px; background: var(--negro); position: relative; content: "";
}
.nav__toggle span::before { position: absolute; top: -6px; }
.nav__toggle span::after { position: absolute; top: 6px; }

/* ---------- Secciones ---------- */
.seccion { padding: 72px 0; }
.seccion--gris { background: var(--gris-claro); }
.seccion__titulo {
  font-size: clamp(26px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--negro);
}
.seccion__sub {
  margin-top: 8px;
  font-size: 17px;
  color: var(--texto-suave);
  max-width: 68ch;
}
.seccion__cabecera { margin-bottom: 32px; }

.eyebrow {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--texto);
  margin-bottom: 14px;
}

/* ---------- Hero ---------- */
.hero { padding: 56px 0 64px; }
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero__titulo {
  font-size: clamp(34px, 4.6vw, 52px);
  line-height: 1.08;
  font-weight: 700;
  color: var(--negro);
  letter-spacing: -.01em;
}
.hero__texto {
  margin-top: 18px;
  font-size: 19px;
  color: var(--texto-suave);
  max-width: 52ch;
}
.hero__acciones { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero__media {
  position: relative;
  width: 100%;
  margin: 0;
  border-radius: var(--radio);
  overflow: hidden;
  background: #1a1a1a;
  aspect-ratio: 4 / 3;
}
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__lema {
  position: absolute;
  right: 20px; bottom: 18px;
  text-align: right;
  color: var(--blanco);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  line-height: 1.8;
  text-shadow: 0 1px 4px rgba(0,0,0,.6);
}

/* ---------- Identificación del problema ---------- */
.problema__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: start;
}
.problema__pregunta {
  font-size: clamp(24px, 2.8vw, 30px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--negro);
}
.problema__texto { margin-top: 16px; color: var(--texto-suave); max-width: 55ch; }
.senales {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.senales li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--gris-claro);
  border-radius: 8px;
  font-weight: 600;
}
.senales li::before {
  content: "";
  flex: 0 0 10px;
  width: 10px; height: 10px;
  background: var(--naranja);
  border-radius: 2px;
}

/* ---------- Tarjetas (Familiar / Impacto / Soluciones / Contacto) ---------- */
.tarjetas {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.tarjetas--3 { grid-template-columns: repeat(3, 1fr); }
.tarjetas--5 { grid-template-columns: repeat(5, 1fr); }
.tarjeta {
  background: var(--gris-claro);
  border-radius: var(--radio);
  padding: 28px 20px 26px;
  text-align: center;
}
.seccion--gris .tarjeta { background: var(--blanco); }
.tarjeta__icono {
  width: 60px; height: 60px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--crema);
  display: flex; align-items: center; justify-content: center;
  color: var(--naranja);
}
.tarjeta__icono svg { width: 30px; height: 30px; }
.tarjeta__titulo { font-size: 17px; font-weight: 700; color: var(--negro); line-height: 1.25; }
.tarjeta__texto { margin-top: 8px; font-size: 15px; color: var(--texto-suave); line-height: 1.4; }
.tarjeta__link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--naranja);
  text-decoration: none;
}
.tarjeta__link:hover { text-decoration: underline; }
a.tarjeta { text-decoration: none; color: inherit; transition: background-color .15s ease; }
a.tarjeta:hover { background: #ececec; }

/* ---------- Por qué ocurre ---------- */
.causas {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.causas li {
  padding-top: 18px;
  border-top: 3px solid var(--amarillo);
}
.causas h3 { font-size: 19px; font-weight: 700; color: var(--negro); }
.causas p { margin-top: 8px; color: var(--texto-suave); font-size: 16px; }

/* ---------- Alternativa ---------- */
.alternativa__grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  align-items: center;
}
.checks {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.checks li { display: grid; grid-template-columns: 30px 1fr; column-gap: 12px; }
.checks .check {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--naranja);
  color: var(--blanco);
  display: flex; align-items: center; justify-content: center;
  grid-row: span 2;
}
.checks .check svg { width: 16px; height: 16px; }
.checks strong { font-size: 16px; color: var(--negro); line-height: 1.25; }
.checks span { font-size: 14px; color: var(--texto-suave); line-height: 1.35; }
.alternativa__media {
  width: 100%;
  margin: 0;
  border-radius: var(--radio);
  overflow: hidden;
  background: var(--gris-claro);
  aspect-ratio: 4 / 3;
  position: relative;
}
.alternativa__media img { width: 100%; height: 100%; object-fit: cover; }
.alternativa__media figcaption {
  position: absolute; top: 14px; right: 16px;
  font-size: 11px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--negro); text-align: right; line-height: 1.7;
}

/* ---------- Beneficios ---------- */
.beneficios__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.beneficios__lista {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 14px;
}
.beneficios__lista li {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px;
  background: var(--blanco);
  border-radius: 8px;
  font-weight: 700;
  color: var(--negro);
}
.beneficios__lista .check {
  flex: 0 0 26px; width: 26px; height: 26px; border-radius: 50%;
  background: var(--naranja); color: var(--blanco);
  display: flex; align-items: center; justify-content: center;
}
.beneficios__lista .check svg { width: 14px; height: 14px; }
.beneficios__nota { margin-top: 14px; font-size: 14px; color: var(--texto-suave); }
.comparativa {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.comparativa figure { margin: 0; }
.comparativa img { border-radius: 8px; width: 100%; aspect-ratio: 6 / 5; object-fit: cover; }
.comparativa figcaption { margin-top: 8px; font-size: 14px; font-weight: 700; color: var(--negro); }

/* ---------- Soluciones ---------- */
.soluciones__equipos {
  margin-top: 36px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.soluciones__equipos p { color: var(--texto-suave); }
.soluciones__equipos .btn { margin-top: 20px; }

/* ---------- Contacto ---------- */
.contacto__cabecera {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 32px;
}
.contacto__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.contacto__tarjeta {
  display: block;
  background: var(--gris-claro);
  border-radius: var(--radio);
  padding: 24px 20px;
  text-decoration: none;
  color: inherit;
  transition: background-color .15s ease;
}
.contacto__tarjeta:hover { background: #ececec; }
.contacto__tarjeta .tarjeta__icono { margin: 0 0 12px; width: 48px; height: 48px; }
.contacto__tarjeta .tarjeta__icono svg { width: 24px; height: 24px; }
.contacto__tarjeta strong { display: block; font-size: 17px; color: var(--negro); }
.contacto__tarjeta span { display: block; margin-top: 4px; font-size: 14px; color: var(--texto-suave); }
.contacto__lema {
  font-size: 11px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--texto-suave); line-height: 1.8; white-space: nowrap;
}

/* ---------- Formulario ---------- */
.formulario {
  margin-top: 40px;
  padding: 36px;
  background: var(--gris-claro);
  border-radius: var(--radio);
}
.formulario__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 22px;
  margin-top: 22px;
}
.campo { display: flex; flex-direction: column; gap: 6px; }
.campo--full { grid-column: 1 / -1; }
.campo label { font-size: 15px; font-weight: 700; color: var(--negro); }
.campo input, .campo select, .campo textarea {
  font: inherit;
  font-size: 16px;
  padding: 12px 14px;
  border: 1px solid #cfcfcf;
  border-radius: 8px;
  background: var(--blanco);
  color: var(--texto);
  width: 100%;
}
.campo textarea { min-height: 120px; resize: vertical; }
.campo input:focus, .campo select:focus, .campo textarea:focus {
  outline: 2px solid var(--naranja); outline-offset: 0; border-color: var(--naranja);
}
.formulario__pie {
  grid-column: 1 / -1;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px;
  margin-top: 6px;
}
.formulario__privacidad { font-size: 14px; color: var(--texto-suave); display: flex; gap: 10px; align-items: flex-start; }
.formulario__privacidad input { width: auto; margin-top: 4px; }
.formulario__estado { margin-top: 16px; font-size: 15px; font-weight: 600; min-height: 1.4em; }
.formulario__estado[data-tipo="ok"] { color: #1c7c3a; }
.formulario__estado[data-tipo="error"] { color: #b3261e; }

/* ---------- Footer ---------- */
.footer { background: var(--negro); color: #d9d9d9; padding: 44px 0 28px; }
.footer__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.footer__logo img { width: 220px; height: auto; }
.footer p { font-size: 15px; line-height: 1.6; }
.footer a { color: var(--blanco); text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer__lema { margin-top: 18px; font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--amarillo); }
.footer__legal {
  margin-top: 32px; padding-top: 18px;
  border-top: 1px solid #333;
  font-size: 13px; color: #8a8a8a;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px;
}
.footer__legal a { color: #b5b5b5; }

/* ---------- WhatsApp flotante ---------- */
.whatsapp-flotante {
  position: fixed;
  right: 20px; bottom: 20px;
  z-index: 60;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25d366;
  color: var(--blanco);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 18px rgba(0,0,0,.25);
}
.whatsapp-flotante svg { width: 30px; height: 30px; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .tarjetas { grid-template-columns: repeat(2, 1fr); }
  .tarjetas--5 { grid-template-columns: repeat(3, 1fr); }
  .contacto__grid { grid-template-columns: repeat(2, 1fr); }
  .causas { grid-template-columns: 1fr; gap: 20px; }
  .checks { grid-template-columns: 1fr; gap: 14px; }
}

@media (max-width: 860px) {
  .seccion { padding: 56px 0; }
  .hero { padding: 36px 0 48px; }
  .hero__grid,
  .problema__grid,
  .alternativa__grid,
  .beneficios__grid,
  .soluciones__equipos { grid-template-columns: 1fr; gap: 28px; }
  .hero__media { max-width: 560px; }
  .contacto__cabecera { flex-direction: column; align-items: flex-start; }
  .formulario { padding: 24px; }
  .formulario__grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 22px; }

  .nav__toggle { display: flex; }
  .nav__links {
    display: none;
    position: absolute;
    left: 0; right: 0; top: var(--alto-header);
    flex-direction: column;
    gap: 0;
    background: var(--blanco);
    border-bottom: 1px solid var(--gris-borde);
    padding: 8px 24px 16px;
  }
  .nav__links a { display: block; padding: 12px 0; border-bottom: 1px solid var(--gris-borde); }
  .nav.abierto .nav__links { display: flex; }
  .nav .btn { display: none; }
  .nav.abierto .btn { display: inline-flex; position: absolute; left: 24px; right: 24px; top: calc(var(--alto-header) + 230px); justify-content: center; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .header__logo img { width: 190px; }
  .tarjetas, .tarjetas--3, .tarjetas--5, .contacto__grid { grid-template-columns: 1fr; }
  .comparativa { grid-template-columns: 1fr 1fr; gap: 10px; }
  .hero__acciones .btn { width: 100%; justify-content: center; }
  .contacto__lema { white-space: normal; }
}