:root {
    --bg: #ffffff;
    --bg-alt: #f5f5f5;
    --text: #222222;
    --muted: #666666;
    --primary: #25d366; /* WhatsApp */
    --primary-dark: #1eb256;
    --carbon: #0f0f0f;
    --accent-red: #d32f2f;
    --radius: 12px;
    --shadow-soft: 0 12px 30px rgba(0, 0, 0, 0.08);
    --max-width: 1040px;
  }
  
  /* RESET BÁSICO */
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
  }
  
  /* UTILITARIOS */
  .container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.25rem;
  }
  
  .section {
    padding: 3.5rem 0;
  }
  
  .section.alt {
    background: var(--bg-alt);
  }
  
  .section h2 {
    margin: 0 0 0.75rem;
    font-size: clamp(1.9rem, 2.5vw, 2.3rem);
    letter-spacing: 0.01em;
  }
  
  .section-sub {
    margin: 0 0 2rem;
    color: var(--muted);
    max-width: 640px;
  }

  /* Centrar títulos y subtítulos en secciones más visuales */
  #fotos h2,
  #fotos .section-sub,
  .faq-section h2 {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }
  
  .center {
    text-align: center;
  }
  
  strong {
    font-weight: 600;
  }
  
  /* ================= HERO FULL-WIDTH ================= */
  
  .hero {
    position: relative;
    color: #fff;
    background-color: #000;
    background-image:
      radial-gradient(circle at top left, rgba(0, 0, 0, 0.3), transparent),
      radial-gradient(circle at bottom right, rgba(0, 0, 0, 0.6), transparent),
      url("../images/kewen-carbon-hero.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
  }
  
  .hero-full {
    min-height: 100vh;
    display: flex;
    align-items: center;
  }
  
  .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
      to bottom,
      rgba(0, 0, 0, 0.65),
      rgba(0, 0, 0, 0.9)
    );
    pointer-events: none;
  }
  
  .hero-inner {
    position: relative;
    padding: 4.5rem 0 3rem;
    max-width: 660px;
  }
  
  .hero-inner h1 {
    font-size: clamp(2.3rem, 4vw, 3rem);
    margin: 0.9rem 0 1.2rem;
  }
  
  .hero-sub {
    margin: 0 0 2rem;
    color: #f0f0f0;
    font-size: 1rem;
  }
  
  .hero-seo {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: #cfcfcf;
  }
  
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.8rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    font-size: 0.8rem;
  }
  
  .hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  
/* HERO — CENTRADO */
.hero.hero-full .hero-inner {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  /* LOGO EN HERO */
  .hero-logo img {
    width: 140px;
    height: auto;
    margin-bottom: 1.5rem;
    filter: brightness(0) invert(1); /* INVERTIR COLOR A BLANCO */
    opacity: 0.9;
  }

  .hero h1 {
    max-width: 720px;
  }
  .hero-sub {
    max-width: 640px;
  }
  

  /* ================= BOTONES ================= */
  
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.4rem;
    border-radius: 999px;
    border: none;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
    white-space: nowrap;
  }
  
  .btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 10px 25px rgba(37, 211, 102, 0.35);
  }
  
  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 12px 30px rgba(37, 211, 102, 0.45);
  }
  
  .btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
  }
  
  .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
  }
  
  .btn-large {
    padding-inline: 1.8rem;
    padding-block: 0.9rem;
  }
  
  /* ================= BENEFICIOS ================= */
  
  .grid-beneficios {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
  }
  
  .beneficio {
    background: #fff;
    border-radius: var(--radius);
    padding: 1.25rem 1.4rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(0, 0, 0, 0.03);
  }
  
  .beneficio h3 {
    margin: 0.5rem 0 0.4rem;
    font-size: 1.05rem;
  }
  
  .beneficio p {
    margin: 0;
    color: var(--muted);
  }
  
  .emoji {
    font-size: 1.4rem;
  }
  
  /* ================= PRECIOS ================= */
  
  .tabla-precios {
    display: grid;
    gap: 1.5rem;
    margin: 2rem 0 1rem;
  }
  
  .precio-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 1.5rem 1.4rem;
    box-shadow: var(--shadow-soft);
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.03);
  }
  
  .precio-card.destacado {
    border: 2px solid var(--accent-red);
  }
  
  .precio-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-red);
    color: #fff;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8rem;
  }
  
  .precio-card h3 {
    margin: 0 0 0.4rem;
  }
  
  .precio-desde {
    margin: 0 0 0.75rem;
    font-weight: 600;
    color: var(--carbon);
  }
  
  .precio-card ul {
    margin: 0;
    padding-left: 1.1rem;
    color: var(--muted);
  }
  
  .nota-precios,
  .seo-line {
    font-size: 0.9rem;
    color: var(--muted);
  }
  
  /* ================= ZONAS ================= */
  
  .zonas-grid {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
  }
  
  .zonas-lista {
    list-style: none;
    margin: 0.75rem 0 0;
    padding: 0;
  }
  
  .zonas-lista li {
    margin-bottom: 0.25rem;
  }
  
  .zonas-texto p {
    margin-top: 0;
  }
  
  /* ================= GALERÍA ================= */
  
  .galeria {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
  }
  
  .galeria-item img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    display: block;
  }
  
  .galeria-item figcaption {
    font-size: 0.9rem;
    color: var(--muted);
    margin-top: 0.4rem;
  }
  
  /* ================= NOSOTROS ================= */
  
  .nosotros-layout {
    display: grid;
    gap: 1.25rem;
    margin-top: 1.5rem;
  }
  
  /* ================= CTA FINAL ================= */
  
  .cta-final {
    text-align: center;
  }

  .cta-final .section-sub {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }

  .cta-final {
    background: var(--bg);
  }
  
 /* ================= FOOTER ================= */
.footer {
  padding: 40px 18px 26px;
  text-align: center;
  background: #08090a;
  border-top: 1px solid #151515;
}

.footer-logo {
  width: 80px;
  height: auto;
  margin: 0 auto 14px;
  filter: brightness(0) invert(1); /* dejar logo en blanco */
  opacity: 0.9;
}

.footer-desc {
  color: #c9c9c9;
  max-width: 720px;
  margin: 0 auto 14px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-address {
  color: #aaaaaa;
  font-size: 0.85rem;
  line-height: 1.7;
  margin: 10px auto 0;
}

.footer-address a {
  color: #ffffff;
  text-decoration: none;
}

.footer-address a:hover {
  color: var(--primary);
}

.footer-social {
  margin-top: 14px;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.icon-ig {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: #f3f3f3;
  stroke-width: 1.6;
}

.footer-social a:hover .icon-ig {
  stroke: var(--primary);
}

.footer-copy {
  margin-top: 12px;
  color: #777;
  font-size: 0.78rem;
}

  
  /* ================= WHATSAPP FIJO ================= */

.btn-whatsapp-fixed {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    background: var(--primary);
    color: #fff;
    border-radius: 999px;
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    box-shadow: 0 12px 30px rgba(37, 211, 102, 0.6);
    z-index: 50;
  
    /* oculto por defecto */
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  
  .btn-whatsapp-fixed:hover {
    background: var(--primary-dark);
  }
  
  /* visible después del hero */
  .btn-whatsapp-fixed.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  
  
  /* ================= RESPONSIVE ================= */
  
  @media (min-width: 720px) {
    .grid-beneficios {
      grid-template-columns: repeat(4, minmax(0, 1fr));
    }
  
    .tabla-precios {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  
    .zonas-grid {
      grid-template-columns: 1.1fr 1.5fr;
    }
  
    .galeria {
      grid-template-columns: repeat(4, minmax(0, 1fr));
    }
  }
  
  @media (max-width: 720px) {
    .hero-full {
      min-height: 90vh;
      align-items: flex-end;
    }
  
    .hero-inner {
      padding: 3.5rem 0 2.5rem;
    }
  
    .footer-content {
      flex-direction: column;
    }
  }
  

  .footer a {
    color: #fff;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
  }
  
  .footer a:hover {
    color: #25d366; /* guiño WhatsApp */
  }

/* FAQ */
.faq-section {
  background: var(--bg); /* blanco, para que no compita con el CTA .alt */
}

.faq-section .faq-item {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow-soft);
  margin-top: 1.2rem;
}

.faq-section .faq-item h3 {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
}

.faq-section .faq-item p {
  margin: 0;
  color: var(--muted);
}


.section-seo {
  background: var(--bg); /* blanco limpio */
}

.section-seo h2,
.section-seo .section-sub {
  text-align: center;
}

.section-seo .nosotros-layout p {
  font-size: 1rem;
  color: var(--text);
  line-height: 1.65;
}

.section-highlight {
  background: #e8f5e9; /* Verde muy suave */
  border-top: 1px solid #d9ebdb;
  border-bottom: 1px solid #d9ebdb;
}

.btn-highlight {
  background: #1b9b50; /* verde más profundo */
  color: #ffffff;
  padding: 14px 36px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 6px 16px rgba(14, 107, 53, 0.25);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-highlight:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(14, 107, 53, 0.28);
}