/* ==========================================================================
   Layout — Header, mega menú, footer
   ========================================================================== */

/* --- Header ---
   Minimalista: flota transparente sobre el hero y solo gana fondo/blur al
   hacer scroll. En páginas con hero oscuro (home), el header además lleva
   la clase .on-dark para que el texto nazca blanco y pase a oscuro al
   scrollear (ver bloque "on-dark" más abajo). */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}
.site-header.scrolled {
  background: rgba(255,255,255,0.86);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  box-shadow: 0 8px 30px rgba(2,48,71,0.08);
  border-color: var(--color-border);
}

.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; font-family: var(--font-display); }
.brand .brand-logo { height: 34px; width: auto; }
.brand-sub { display: block; font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-ink-soft); font-family: var(--font-body); font-weight: 600; transition: color var(--transition-fast); }

/* Noticias temporalmente oculto (sin contenido publicado aún) */
.main-nav li:has(> a[href="noticias.html"]),
.site-footer li:has(> a[href="noticias.html"]) { display: none; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav > ul { display: flex; align-items: center; gap: 2px; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  transition: color var(--transition-fast);
}
.main-nav > ul > li > a svg { width: 13px; height: 13px; transition: transform var(--transition-fast); }
.main-nav > ul > li > a:hover, .main-nav > ul > li.active > a { color: var(--color-secondary); }
.main-nav > ul > li.active > a::before { content: '\2014'; margin-right: 2px; }
.main-nav > ul > li.has-mega:hover > a svg { transform: rotate(180deg); }

.header-cta { display: flex; align-items: center; gap: 18px; }
.nav-toggle { display: none; }

.lang-toggle { display: flex; align-items: center; gap: 8px; font-family: var(--font-display); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em; }
.lang-toggle span { color: var(--color-ink-soft); cursor: pointer; opacity: 0.55; transition: opacity var(--transition-fast), color var(--transition-fast); }
.lang-toggle span.active { opacity: 1; color: var(--color-primary); }
.lang-toggle .sep { opacity: 0.3; }
.site-header.on-dark:not(.scrolled) .lang-toggle span { color: rgba(255,255,255,0.6); }
.site-header.on-dark:not(.scrolled) .lang-toggle span.active { color: #fff; opacity: 1; }

/* --- Variante sobre hero oscuro (home) --- */
.site-header.on-dark:not(.scrolled) .main-nav > ul > li > a { color: rgba(255,255,255,0.92); }
.site-header.on-dark:not(.scrolled) .main-nav > ul > li > a:hover,
.site-header.on-dark:not(.scrolled) .main-nav > ul > li.active > a { color: var(--color-support); }
.site-header.on-dark:not(.scrolled) .brand-sub { color: rgba(255,255,255,0.65); }
.site-header.on-dark:not(.scrolled) .nav-toggle { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.3); }
.site-header.on-dark:not(.scrolled) .nav-toggle span { background: #fff; }

/* --- Mega menú Productos --- */
/* .mega-menu is a purely positional hit-box starting flush against the nav
   link (top:100%, no gap) so the pointer never crosses "dead space" between
   the trigger and the panel while moving down — the visual 14px gap lives in
   .mega-menu-panel's own offset instead, keeping the hover chain unbroken. */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: min(980px, 92vw);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  z-index: 50;
}
.mega-menu-panel {
  margin-top: 14px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  padding: 34px;
  display: grid;
  grid-template-columns: 1.15fr 1fr 1fr 1fr;
  gap: 30px;
  transform: translateY(12px);
  transition: transform var(--transition-fast);
}
.main-nav > ul > li.has-mega:hover .mega-menu,
.main-nav > ul > li.has-mega.open .mega-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.main-nav > ul > li.has-mega:hover .mega-menu-panel,
.main-nav > ul > li.has-mega.open .mega-menu-panel {
  transform: translateY(0);
}
.mega-col h4 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-secondary);
  margin-bottom: 16px;
  font-family: var(--font-body);
  font-weight: 700;
}
.mega-col ul li { margin-bottom: 4px; }
.mega-col ul li a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--color-ink-soft);
  transition: background var(--transition-fast), color var(--transition-fast), padding-left var(--transition-fast);
}
.mega-col ul li a:hover { background: var(--color-gray-50); color: var(--color-primary); padding-left: 16px; }

.mega-feature {
  overflow: hidden;
  border-radius: var(--radius-md);
  padding: 0;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  flex-direction: column;
}
.mega-feature .feature-bg { flex: 0 0 175px; height: 175px; background: #fff; }
.mega-feature .feature-bg img { width: 100%; height: 100%; object-fit: contain; padding: 10px; }
.mega-feature .feature-panel { flex: 1; background: var(--color-primary); padding: 10px 18px 12px; display: flex; flex-direction: column; justify-content: center; gap: 4px; }
.mega-feature h4 { color: #fff; font-size: 0.95rem; margin: 0; }
.mega-feature p { color: rgba(255,255,255,0.75); font-size: 0.8rem; margin: 0; }
.mega-feature a { font-size: 0.8rem; font-weight: 700; color: var(--color-support); display: inline-flex; align-items: center; gap: 6px; margin-top: 6px; }
.mega-feature a svg { width: 14px; height: 14px; flex-shrink: 0; }

/* --- Mobile nav --- */
@media (max-width: 1080px) {
  /* top+height (no bottom/inset) because .site-header's backdrop-filter makes it
     the containing block for this fixed element; "bottom:0" would anchor to the
     header's own edge instead of the viewport. */
  .main-nav { position: fixed; top: var(--header-h); left: 0; right: 0; height: calc(100vh - var(--header-h)); background: #fff; flex-direction: column; align-items: stretch; padding: 20px; overflow-y: auto; transform: translateX(100%); transition: transform var(--transition-med); }
  .main-nav.open { transform: translateX(0); }
  .main-nav > ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .main-nav > ul > li > a { padding: 16px 14px; justify-content: space-between; }
  .mega-menu,
  .main-nav > ul > li.has-mega:hover .mega-menu,
  .main-nav > ul > li.has-mega.open .mega-menu {
    position: static; opacity: 1; visibility: visible; pointer-events: auto; width: auto; left: auto; transform: none;
  }
  .mega-menu-panel,
  .main-nav > ul > li.has-mega:hover .mega-menu-panel,
  .main-nav > ul > li.has-mega.open .mega-menu-panel {
    margin-top: 0; transform: none; box-shadow: none; border: none; background: none; grid-template-columns: 1fr; padding: 10px 0 20px 14px;
  }
  .mega-menu { display: none; }
  .main-nav > ul > li.has-mega.open .mega-menu { display: block; }
  .mega-menu-panel { display: grid; }
  .mega-feature { display: block; margin: 6px 0 0; background: none; }
  .mega-feature .feature-bg { display: none; }
  .mega-feature .feature-panel { background: var(--color-gray-50); border-radius: var(--radius-sm); padding: 14px 16px; gap: 6px; }
  .mega-feature h4 { color: var(--color-primary); font-size: 0.85rem; }
  .mega-feature p { color: var(--color-ink-soft); font-size: 0.78rem; }
  .mega-feature a { color: var(--color-secondary); margin-top: 4px; }
  .nav-toggle { display: flex; }
}

.nav-toggle {
  width: 46px; height: 46px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: #fff;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--color-primary); border-radius: 2px; transition: all var(--transition-fast); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Footer --- */
.site-footer { background: var(--color-primary); color: rgba(255,255,255,0.72); position: relative; overflow: hidden; }
.footer-top { padding: 90px 0 60px; position: relative; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 50px; }
.footer-brand p { color: rgba(255,255,255,0.6); max-width: 320px; }
.footer-brand .brand-sub { color: rgba(255,255,255,0.55); }
.footer-col h5 { color: #fff; font-family: var(--font-display); font-size: 0.95rem; margin-bottom: 20px; letter-spacing: 0.02em; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { transition: color var(--transition-fast), padding-left var(--transition-fast); font-size: 0.92rem; }
.footer-col ul li a:hover { color: var(--color-accent); padding-left: 4px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 16px; font-size: 0.92rem; }
.footer-contact svg { width: 18px; height: 18px; color: var(--color-support); flex-shrink: 0; margin-top: 2px; }
.social-row { display: flex; gap: 10px; margin-top: 22px; }
.social-row a {
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  transition: all var(--transition-fast);
}
.social-row a:hover { background: var(--color-secondary); transform: translateY(-4px); }
.social-row svg { width: 18px; height: 18px; color: #fff; }

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.14); padding: 24px 0; position: relative; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; }
.footer-bottom a:hover { color: var(--color-accent); }
.footer-legal { display: flex; gap: 22px; }

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
}