/* ============================================================
   AlphaNetworks · layout.css
   Estructura de página: contenedor, nav, footer, hero, secciones.
   Depende de: variables.css, base.css
   ============================================================ */

/* ── Utilities de color ─────────────────────────────────── */
.cyan  { color: var(--cyan); }
.muted { color: var(--muted); }

/* ── Contenedor ─────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}
.container--fluid { max-width: var(--maxw-fluid); }

/* ── Topbar (barra informativa superior) ────────────────── */
.topbar {
  display: none;                          /* oculto por defecto; visible en desktop */
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
  font-size: var(--fs-xs);
  color: var(--muted);
}
.topbar .inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 24px;
  height: 36px;
}
.topbar a          { color: var(--muted); transition: var(--transition-fast); }
.topbar a:hover    { color: var(--cyan); }
.topbar .l,
.topbar .r         { display: flex; align-items: center; gap: 14px; }

/* ── Navegación principal ───────────────────────────────── */
/* .scrolled se agrega por JS en navigation.js cuando scroll > 20px */
header.nav.scrolled {
  background: rgba(7,20,38,.96);
  box-shadow: 0 4px 24px rgba(0,0,0,.35);
}
header.nav {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(7,20,38,.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 96px;
  gap: 30px;
}
/* Logo más grande, con micro-interacción al pasar el cursor */
.logo img       { height: 82px; width: auto; transition: transform var(--transition-fast); }
.logo:hover img { transform: scale(1.05); }

.navlinks      { display: flex; align-items: center; gap: 30px; }
.navlinks a {
  position: relative;
  font-size: .95rem;
  font-weight: var(--fw-medium);
  color: #DCE6F4;
  transition: color var(--transition-fast);
  letter-spacing: -.005em;
}
/* Subrayado cyan animado con glow (no aplica al botón Contacto) */
.navlinks a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -8px;
  height: 2px; border-radius: 2px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .3s var(--ease);
}
.navlinks a:not(.btn):hover                 { color: #fff; }
.navlinks a:not(.btn):hover::after,
.navlinks a.active:not(.btn)::after,
.navlinks a[aria-current]:not(.btn)::after  { transform: scaleX(1); }
.navlinks a.active:not(.btn),
.navlinks a[aria-current]:not(.btn)         { color: var(--cyan); font-weight: var(--fw-semibold); }

/* ── Dropdown "Soluciones" ──────────────────────────────── */
.nav-item.has-drop { position: relative; display: flex; align-items: center; }
.nav-drop-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: var(--fw-medium);
  color: #DCE6F4;
  letter-spacing: -.005em;
  transition: color var(--transition-fast);
}
.nav-drop-toggle .caret { opacity: .8; transition: transform var(--transition-fast); }
.nav-drop-toggle:hover,
.nav-item.has-drop:hover .nav-drop-toggle,
.nav-item.has-drop:focus-within .nav-drop-toggle { color: #fff; }
.nav-item.has-drop:hover .caret,
.nav-item.has-drop.open .caret { transform: rotate(180deg); }
/* Activo cuando estás en una de las soluciones (lo marca el JS) */
.nav-drop-toggle.active { color: var(--cyan); font-weight: var(--fw-semibold); }

/* Panel flotante */
.nav-drop-menu {
  position: absolute;
  top: calc(100% + 16px);
  left: 50%;
  min-width: 215px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px;
  background: rgba(7,20,38,.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 20px 50px rgba(0,0,0,.5);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(8px);
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
  z-index: var(--z-sticky);
}
/* Puente invisible: evita que el hover se corte entre el botón y el panel */
.nav-drop-menu::before {
  content: "";
  position: absolute;
  top: -16px; left: 0; right: 0;
  height: 16px;
}
.nav-item.has-drop:hover .nav-drop-menu,
.nav-item.has-drop:focus-within .nav-drop-menu,
.nav-item.has-drop.open .nav-drop-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.navlinks .nav-drop-menu a {
  display: block;
  padding: 11px 14px;
  border-radius: 9px;
  font-size: .92rem;
  font-weight: var(--fw-medium);
  color: #DCE6F4;
  white-space: nowrap;
  transition: background .2s ease, color .2s ease;
}
.navlinks .nav-drop-menu a::after { content: none; }   /* anula el subrayado del nav */
.navlinks .nav-drop-menu a:hover,
.navlinks .nav-drop-menu a.active {
  background: var(--cyan-dim);
  color: var(--cyan);
}

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  color: var(--muted);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}

/* ── Sección — shell reutilizable ───────────────────────── */
.sec      { padding-block: var(--section-y); }
.sec--soft,
.sec.soft { background: linear-gradient(180deg, rgba(13,34,58,.5), transparent); }

.sec-head {
  text-align: center;
  max-width: 660px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}
.sec-head h2 { font-size: clamp(1.8rem,3.6vw,2.7rem); margin-block: var(--space-3); }
.sec-head p  { color: var(--muted); font-size: var(--fs-md); }

/* ── Hero (home) ────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 72px;
  background:
    radial-gradient(ellipse 800px 500px at 90% -10%, rgba(0,184,217,.14) 0%, transparent 60%),
    radial-gradient(ellipse 600px 600px at 5% 110%, rgba(14,100,180,.12) 0%, transparent 55%),
    var(--bg);
}
.hero .gridlines {
  position: absolute; inset: 0;
  pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.032) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, #000, transparent);
          mask-image: radial-gradient(ellipse 70% 60% at 70% 30%, #000, transparent);
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.35fr .85fr;
  gap: 48px;
  align-items: center;
}
/* El título usa todo el ancho de su columna → menos amontonado */
.hero h1        { margin: 18px 0 18px; max-width: none; line-height: 1.22; }
.hero p.lead    { font-size: 1.08rem; line-height: 1.65; color: #C8D5EA; max-width: 620px; margin-bottom: 32px; }
.hero-cta       { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 22px; }
.hero-stats     { display: flex; gap: 28px; flex-wrap: wrap; padding-top: 18px; border-top: 1px solid var(--border); }
.hstat .n       { font-size: 1.7rem; font-weight: 900; color: var(--cyan); }
.hstat .l       { font-size: .75rem; color: var(--dim); margin-top: 1px; }

/* ── Page hero (páginas internas) ───────────────────────── */
.page-hero {
  display: flex;
  align-items: flex-start;      /* contenido arriba → misma posición en TODAS las páginas */
  justify-content: center;
  min-height: 520px;            /* altura uniforme en TODAS las páginas internas */
  padding: 56px 0 48px;         /* el contenido arranca a la misma altura siempre */
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-surf), transparent);
}
.page-hero .container { width: 100%; }
.page-hero .hero-cta { justify-content: center; margin-top: 34px; }
/* Título usa el máximo ancho disponible → menos saltos de línea */
.page-hero h1   { font-size: clamp(2rem,4vw,3rem); line-height: 1.32; letter-spacing: -.015em; margin: 20px 0 22px; max-width: 1080px; margin-inline: auto; }
.page-hero p    { color: var(--muted); font-size: var(--fs-md); line-height: 1.7; max-width: 660px; margin-inline: auto; }

/* ── Trust strip (cobertura multitecnología) ────────────── */
.trust {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: rgba(13,34,58,.6);
}
.trust .container,
.trust .inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: space-between;
  padding-block: 18px;
}
.trust-lab,
.trust .lab {
  font-size: .74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--muted);
  flex-shrink: 0;
}
.trust-items,
.trust .chips { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
.trust .chip,
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  font-weight: 700;
  color: #DCE6F4;
  letter-spacing: .02em;
}
.trust .chip svg,
.chip svg { color: var(--cyan); flex-shrink: 0; }

/* ── Layout split (2 columnas) ──────────────────────────── */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
}
.split h2 { font-size: clamp(1.7rem,3.2vw,2.5rem); margin-bottom: 16px; }
.split p  { color: var(--muted); margin-bottom: 14px; }

/* ── Formulario: layout de contacto ────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;   /* columnas simétricas */
  gap: 28px;
  align-items: stretch;             /* ambas columnas a la misma altura */
}
/* Columna izquierda en flex: el mapa crece para igualar al formulario */
.contact-info { display: flex; flex-direction: column; gap: 20px; }

/* ── Footer ─────────────────────────────────────────────── */
footer.site {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 56px 0 28px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 40px;
}
footer.site .logo img { height: 40px; margin-bottom: 14px; }
footer.site .tag      { color: var(--muted); font-size: .88rem; max-width: 270px; }

/* Encabezados de columna (h4 en nuevas páginas, h5 en legacy) */
footer.site h4,
footer.site h5 {
  font-size: .7rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--dim);
  margin-bottom: 14px;
}
footer.site ul     { list-style: none; display: grid; gap: 9px; }
footer.site ul a   { font-size: .88rem; color: var(--muted); transition: var(--transition-fast); }
footer.site ul a:hover { color: var(--cyan); }

.foot-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  font-size: .8rem;
  color: var(--dim);
}

/* ── Grid helpers genéricos ─────────────────────────────── */
.grid   { display: grid; gap: var(--space-6); }
.grid--2{ grid-template-columns: repeat(2, 1fr); }
.grid--3{ grid-template-columns: repeat(3, 1fr); }
.grid--4{ grid-template-columns: repeat(4, 1fr); }