/* ═══════════════════════════════════════════════════════════
   Oficina Virtual Calama — Estilos de Navegación
   Archivo: css/nav.css
   Cargar ANTES del CSS específico de cada página.
   ═══════════════════════════════════════════════════════════ */

/* ── Fuente del menú (Barlow) para TODAS las páginas ──────────
   Garantiza que el nav se vea igual aunque la página no cargue
   Barlow en su <head> (ej. utilidades y calculadoras usan Inter). */
@import url('https://fonts.googleapis.com/css2?family=Barlow:wght@300;400;500;600;700&family=Barlow+Condensed:wght@600;700;800&display=swap');

/* ── Variables base (fallback si la página no las define) ── */
:root {
  --naranja:        #e87722;
  --naranja-oscuro: #c25a0c;
  --naranja-claro:  #ffa45a;
  --naranja-muyclaro:#fff2e6;
  --gris-oscuro:    #1a1a1a;
  --gris-medio:     #4a4a4a;
  --gris-claro:     #767676;
  --gris-borde:     #e0e0e0;
  --gris-fondo:     #f5f5f5;
  --blanco:         #ffffff;
  --negro:          #000000;
  --verde:          #067112;
  --verde-claro:    #16ab27;
  --sombra:         0 4px 24px rgba(0,0,0,0.12);
}

/* ── TOPBAR ──────────────────────────────────────────────── */
.topbar {
  background: var(--gris-oscuro);
  color: #ccc;
  font-family: 'Barlow', sans-serif;
  font-size: 0.82rem;
  padding: 7px 0;
  border-bottom: 2px solid var(--naranja);
  line-height: 1.4;
  overflow: hidden;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
  gap: 5px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.topbar a { color: var(--naranja-claro); text-decoration: none; }
.topbar a:hover { color: var(--blanco); }
.topbar-left, .topbar-right { display: flex; gap: 16px; align-items: center; flex-wrap: nowrap; }

/* ── SOCIAL BAR ──────────────────────────────────────────── */
.social-bar {
  background: #111;
  padding: 10px 0;
  border-top: 2px solid var(--naranja);
}
.social-bar .container {
  display: flex;
  justify-content: center;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.social-bar span {
  color: var(--blanco);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}
.social-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  text-decoration: none;
  padding: 7px 16px;
  border-radius: 4px;
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 650;
  font-size: 0.90rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.2s;
}
.social-btn:hover { transform: translateY(-2px); filter: brightness(1.1); }
.social-btn svg { width: 17px; height: 17px; flex-shrink: 0; }
.s-facebook  { background: #1877F2; color: #fff; }
.s-instagram { background: linear-gradient(45deg,#f09433,#e6683c,#dc2743,#cc2366,#bc1888); color: #fff; }
.s-tiktok    { background: #010101; color: #fff; border: 1px solid #333; }
.s-youtube   { background: #FF0000; color: #fff; }

/* ── NAVBAR ──────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--blanco);
  box-shadow: 0 2px 12px rgba(0,0,0,0.10);
  border-bottom: 3px solid var(--naranja);
  font-family: 'Barlow', sans-serif;
  line-height: 1.4;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
}
.logo { display: flex; align-items: center; text-decoration: none; }
.logo img {
  height: 50px;
  width: auto;
  mix-blend-mode: multiply;
  filter: contrast(1.05) saturate(1.1);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2px;
  align-items: center;
  margin: 0;
  padding: 0;
}
.nav-links a {
  text-decoration: none;
  color: var(--gris-medio);
  font-weight: 600;
  font-size: 0.93rem;
  text-transform: uppercase;
  letter-spacing: 0.1px;
  padding: 7px 11px;
  border-radius: 9px;
  transition: all 0.2s;
}
.nav-links a:hover,
.nav-links a.active { background: var(--naranja-oscuro); color: var(--blanco); }

/* Dropdown — aislado contra estilos externos (ej. cyr2026.css).
   cyr2026.css aplica height:0 + overflow:hidden en @media 992px,
   por eso se necesitan estos !important para que el li no colapse. */
.nav-links .dropdown {
  position: relative !important;
  background: transparent !important;
  border: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  opacity: 1 !important;
  visibility: visible !important;
  transform: none !important;
  min-width: 0 !important;
  top: auto !important;
  left: auto !important;
  height: auto !important;
  overflow: visible !important;
}
.nav-links .dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-top: 3px solid var(--naranja);
  min-width: max-content;
  box-shadow: var(--sombra);
  z-index: 200;
  border-radius: 0 0 6px 6px;
  opacity: 1;
  visibility: visible;
  transform: none;
}
.nav-links .dropdown:hover .dropdown-menu,
.nav-links .dropdown:focus-within .dropdown-menu { display: block; }
.nav-links .dropdown-menu a {
  display: block;
  padding: 9px 14px;
  font-size: 0.8rem;
  border-radius: 5px;
  color: var(--gris-medio);
}
.nav-links .dropdown-menu a:hover { background: var(--naranja-oscuro); color: var(--blanco); }

/* WhatsApp button — especificidad alta para ganar a .nav-links a:hover en cualquier página */
.nav-links a.btn-nav {
  background: var(--verde-claro) !important;
  color: var(--blanco) !important;
  border-radius: 9px !important;
  padding: 9px 16px !important;
  font-weight: 450 !important;
}
.nav-links a.btn-nav:hover {
  background: var(--verde) !important;
  color: var(--blanco) !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 2px solid var(--naranja);
  border-radius: 6px;
  cursor: pointer;
  padding: 6px;
  z-index: 200;
  transition: background 0.2s;
}
.hamburger:hover { background: var(--naranja); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--naranja);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger:hover span { background: var(--blanco); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── FOOTER ──────────────────────────────────────────────── */
footer {
  background: #111;
  color: #999;
  padding: 52px 0 0;
  font-family: 'Barlow', sans-serif;
  font-size: 0.78rem;
  line-height: 1.6;
}
footer .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 42px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.footer-logo-img {
  height: 96px;
  width: auto;
  mix-blend-mode: lighten;
  filter: brightness(1.15) saturate(1.1);
  margin-bottom: 11px;
  display: block;
}
footer p {
  line-height: 1.8;
  color: var(--gris-claro);
  margin-bottom: 16px;
  font-size: 1rem;
}
.footer-contact a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--blanco);
  text-decoration: none;
  margin-bottom: 6px;
  font-size: 1rem;
  transition: color 0.2s;
}
.footer-contact a:hover { color: var(--naranja-claro); }
footer h4 {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--blanco);
  margin-bottom: 13px;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 6px; }
.footer-links a {
  color: #777;
  text-decoration: none;
  font-size: 1.1rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--naranja-claro); }
.footer-bottom {
  padding: 16px;
  text-align: center;
  font-size: 0.70rem;
  color: #444;
}
.footer-bottom a { color: var(--naranja); text-decoration: none; }

/* Iconos RRSS en footer */
.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 6px;
  transition: all 0.2s;
}
.footer-social a:hover { transform: translateY(-2px); filter: brightness(1.2); }
.footer-social svg { width: 23px; height: 23px; fill: white; }
.fs-fb { background: #1877F2; }
.fs-ig { background: linear-gradient(45deg,#f09433,#e6683c,#dc2743,#cc2366,#bc1888); }
.fs-tt { background: #010101; border: 1px solid #333; }
.fs-yt { background: #FF0000; }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .topbar-left { display: none; }
  .hamburger { display: flex; }
  .nav-links {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--blanco);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 0 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    border-top: 3px solid var(--naranja);
    z-index: 999;
    max-height: calc(100vh - 68px);
    overflow-y: auto;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 13px 22px;
    font-size: 1rem;
    border-radius: 0;
    border-bottom: 1px solid var(--gris-borde);
  }
  .nav-links .dropdown-menu {
    display: block !important;
    position: static;
    box-shadow: none;
    border: none;
    border-top: none;
    background: var(--gris-fondo);
    border-radius: 0;
    padding-left: 16px;
  }
  .nav-links .dropdown-menu a {
    font-size: 0.9rem;
    padding: 10px 22px;
    border-bottom: 1px solid var(--gris-borde);
    color: var(--gris-claro);
  }
  .nav-links a.btn-nav {
    margin: 10px 22px 0 !important;
    border-radius: 6px !important;
    text-align: center;
    display: block;
  }
  .footer-grid { grid-template-columns: 1fr; }
}
