/* =========================================================================
   VARZAN HNOS. S.A. — Hoja de estilos
   -------------------------------------------------------------------------
   EDITORA: los colores de toda la página se definen UNA SOLA VEZ acá abajo,
   en ":root". Si querés cambiar un tono de azul, cambiálo en esta sección
   y se actualiza en todo el sitio automáticamente.
   ========================================================================= */

:root {
  /* Paleta de marca (tomada del logo) */
  --color-navy: #1A2340;       /* "negro" de la paleta: azul muy oscuro, casi negro */
  --color-blue: #18428F;       /* azul marino principal */
  --color-blue-light: #2E5BB8; /* azul para hover / acentos */
  --color-white: #FFFFFF;
  --color-surface: #FFFFFF;  /* fondo de tarjetas */
  --color-accent: #18428F;  /* texto de acento (eyebrow, hover de nav) */

  /* Neutros de apoyo (no forman parte del logo, solo para textos/fondos) */
  --color-ink: #1F2430;
  --color-text: #3A4150;
  --color-text-soft: #6B7280;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F4F6FA;
  --color-border: #E3E7EF;

  --font-heading: 'Poppins', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', Arial, sans-serif;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(26, 35, 64, 0.08);
  --shadow-md: 0 10px 30px rgba(26, 35, 64, 0.12);

  --container-width: 1180px;
}

/* ---------- Reset básico ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 { font-family: var(--font-heading); color: var(--color-ink); margin: 0 0 .5em; line-height: 1.2; }
p { margin: 0 0 1em; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-surface);
  color: var(--color-ink);
  padding: 12px 20px;
  z-index: 1000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

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

.section { padding: 88px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-head { max-width: 680px; margin: 0 auto 48px; text-align: center; }
.section-head h2 { font-size: clamp(1.6rem, 2.4vw, 2.2rem); }
.section-lead { color: var(--color-text-soft); font-size: 1.05rem; }

.eyebrow {
  display: inline-block;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .78rem;
  color: var(--color-accent);
  margin-bottom: 10px;
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .98rem;
  border: 2px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--color-blue);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-blue-light); }

.btn-outline {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}
.btn-outline:hover { background: var(--color-navy); color: var(--color-white); }

.btn-whatsapp {
  background: var(--color-navy);
  color: var(--color-white);
  padding: 10px 18px;
  font-size: .9rem;
}
.btn-whatsapp:hover { background: var(--color-blue); }
.btn .icon { width: 18px; height: 18px; }

/* =========================================================================
   ENCABEZADO
   ========================================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
/* Nota técnica: evitamos "backdrop-filter" acá a propósito: en varios
   navegadores convierte a este encabezado en el contenedor de referencia
   para elementos "position: fixed" (como el menú móvil de abajo), lo que
   rompe que el menú ocupe toda la pantalla en celulares. */
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.brand-logo { height: 48px; width: auto; }

.main-nav ul { display: flex; gap: 32px; }
.main-nav a {
  font-weight: 600;
  font-size: .95rem;
  color: var(--color-ink);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: border-color .15s ease, color .15s ease;
}
.main-nav a:hover { color: var(--color-accent); border-color: var(--color-accent); }

.header-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 20px;
  margin: 0 auto;
  background: var(--color-ink);
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================================
   HERO
   ========================================================================= */
.hero { padding: 72px 0 96px; background: linear-gradient(180deg, #F4F7FC 0%, #FFFFFF 100%); }
.hero-inner {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 56px;
  align-items: center;
}
.hero-media { display: flex; justify-content: center; }
.hero-logo {
  width: 100%;
  max-width: 260px;
  filter: drop-shadow(var(--shadow-md));
}
.hero-content h1 { font-size: clamp(2rem, 4vw, 2.9rem); max-width: 14ch; }
.hero-lead { font-size: 1.08rem; color: var(--color-text); max-width: 60ch; }
.hero-tagline { font-weight: 600; color: var(--color-blue); font-size: 1.05rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 8px; }

/* =========================================================================
   VALORES / NOSOTROS
   ========================================================================= */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 56px;
}
.value-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.value-icon {
  width: 56px; height: 56px;
  margin: 0 auto 18px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(24, 66, 143, 0.1);
  color: var(--color-blue);
}
.value-icon svg { width: 28px; height: 28px; }
.value-card h3 { font-size: 1.15rem; }
.value-card p { color: var(--color-text-soft); font-size: .95rem; margin: 0; }

.stats-row {
  display: flex;
  justify-content: center;
  gap: 64px;
  flex-wrap: wrap;
  text-align: center;
}
.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-ink);
}
.stat-label { color: var(--color-text-soft); font-size: .9rem; }

/* =========================================================================
   TEJIDOS / PRODUCTOS
   ========================================================================= */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 48px;
}
.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 34px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.product-icon {
  width: 52px; height: 52px;
  margin-bottom: 18px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-navy);
  color: var(--color-white);
}
.product-icon svg { width: 26px; height: 26px; }
.product-card h3 { font-size: 1.1rem; }
.product-card p { color: var(--color-text-soft); font-size: .95rem; margin: 0; }

.cta-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  background: var(--color-navy);
  color: var(--color-white);
  border-radius: var(--radius);
  padding: 32px 40px;
}
.cta-banner p { margin: 0; font-size: 1.15rem; font-weight: 600; max-width: 32ch; }

/* =========================================================================
   CONTACTO
   ========================================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: stretch;
}
.contact-cards { display: grid; gap: 16px; }
.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  transition: border-color .15s ease, transform .15s ease;
}
.contact-card:hover { border-color: var(--color-blue); transform: translateY(-2px); }
.contact-card-static:hover { transform: none; border-color: var(--color-border); cursor: default; }
.contact-icon {
  flex: none;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(24, 66, 143, 0.1);
  color: var(--color-blue);
  display: flex; align-items: center; justify-content: center;
}
.contact-icon svg { width: 22px; height: 22px; }
.contact-card h3 { font-size: .95rem; margin: 0 0 2px; }
.contact-card p { margin: 0; font-size: .92rem; color: var(--color-text-soft); }

.contact-map {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  min-height: 320px;
}
.contact-map iframe { width: 100%; height: 100%; min-height: 320px; border: 0; }

/* =========================================================================
   PIE DE PÁGINA
   ========================================================================= */
.site-footer { background: var(--color-navy); color: #D7DCEA; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 64px 24px 40px;
}
.footer-logo {
  height: 72px;
  width: auto;
  margin-bottom: 18px;
  filter: brightness(0) invert(1); /* el logo es azul; esto lo pinta todo de blanco para el pie oscuro */
}
.footer-brand p { font-size: .92rem; color: #AEB7CE; }
.footer-col h3 {
  color: var(--color-white);
  font-size: .95rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: 16px;
}
.footer-legal-title { margin-top: 24px; }
.footer-links li { margin-bottom: 10px; font-size: .92rem; color: #AEB7CE; }
.footer-links a:hover { color: var(--color-white); }

.social-icons { display: flex; gap: 12px; margin-top: 18px; }
.social-icons a {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  transition: background .15s ease;
}
.social-icons a:hover { background: var(--color-blue); }
.social-icons svg { width: 18px; height: 18px; color: var(--color-white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  font-size: .85rem;
  color: #8E97AE;
  text-align: center;
}

/* ---------- Botón flotante de WhatsApp ---------- */
.whatsapp-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(0,0,0,0.25);
  z-index: 600;
  transition: transform .15s ease;
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 30px; height: 30px; }

/* =========================================================================
   RESPONSIVE — Tablets (hasta 960px)
   ========================================================================= */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-media { order: -1; }
  .hero-logo { max-width: 180px; }

  .values-grid, .products-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* =========================================================================
   RESPONSIVE — Celulares (hasta 720px)
   ========================================================================= */
@media (max-width: 720px) {
  .section { padding: 64px 0; }

  .main-nav {
    position: fixed;
    inset: 72px 0 0 0;
    background: var(--color-surface);
    padding: 24px;
    transform: translateX(100%);
    transition: transform .25s ease;
    overflow-y: auto;
  }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav a {
    display: block;
    padding: 14px 8px;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-toggle { display: flex; }
  .header-actions .btn-whatsapp span { display: none; }
  .header-actions .btn-whatsapp { padding: 10px; }

  .values-grid, .products-grid { grid-template-columns: 1fr; }
  .stats-row { gap: 32px; }
  .cta-banner { flex-direction: column; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; padding-top: 48px; }
  .whatsapp-float { right: 16px; bottom: 16px; width: 52px; height: 52px; }
}