/* ===========================
   nav.css — Navegación sticky + mega-menu + hamburger
   =========================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(7,11,20,0.85);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.nav--scrolled {
  background: rgba(7,11,20,0.97);
  box-shadow: 0 4px 32px rgba(0,0,0,0.4);
  border-bottom-color: rgba(255,255,255,0.05);
}

.nav__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

/* --- LOGO --- */
.nav__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.nav__logo-img {
  width: 140px;
  height: auto;
  display: block;
}

/* --- LINKS LIST --- */
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
  list-style: none;
}

.nav__item { position: relative; }

.nav__link {
  display: block;
  padding: 0.5rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav__link:hover,
.nav__link.active {
  color: var(--text);
  background: rgba(255,255,255,0.05);
}

/* --- MEGA BUTTON --- */
.nav__mega-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2);
  border-radius: var(--radius-sm);
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav__mega-btn:hover,
.nav__item--mega:hover .nav__mega-btn {
  color: var(--text);
  background: rgba(255,255,255,0.05);
}

.nav__chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--transition);
  flex-shrink: 0;
}

.nav__item--mega:hover .nav__chevron { transform: rotate(180deg); }
.nav__item--mega.is-open .nav__chevron { transform: rotate(180deg); }

/* --- MEGA PANEL --- */
.nav__mega-panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 480px;
  background: rgba(11,17,32,0.97);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  padding: 1.25rem;
}

/* Puente invisible para evitar cierre al mover cursor */
.nav__mega-panel::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
}

/* Apertura desktop */
@media (min-width: 901px) {
  .nav__item--mega:hover .nav__mega-panel {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }
}

.nav__mega-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-3);
  padding: 0 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.75rem;
}

.nav__mega-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.nav__mega-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.85rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.nav__mega-item:hover {
  background: rgba(255,255,255,0.05);
}

.nav__mega-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav__mega-icon--cyan   { background: rgba(0,212,255,0.1); color: #00d4ff; }
.nav__mega-icon--purple { background: rgba(124,58,237,0.1); color: #a78bfa; }
.nav__mega-icon--green  { background: rgba(16,185,129,0.1); color: #10b981; }

.nav__mega-icon svg { width: 18px; height: 18px; }

.nav__mega-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.15rem;
}

.nav__mega-sub {
  font-size: 0.775rem;
  color: var(--text-3);
  line-height: 1.4;
}

/* --- ACTIONS (derecha) --- */
.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.nav__intranet {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-3);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.nav__intranet:hover {
  color: var(--text-2);
  border-color: rgba(255,255,255,0.15);
}

/* --- HAMBURGER --- */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  cursor: pointer;
  transition: background var(--transition);
}

.nav__hamburger:hover { background: rgba(255,255,255,0.07); }

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--text-2);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.nav__hamburger--open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger--open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger--open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* --- MOBILE NAV --- */
@media (max-width: 900px) {
  .nav__hamburger { display: flex; }
  .nav__cta { display: none; }

  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 1.5rem 1.5rem 3rem;
    background: rgba(7,11,20,0.98);
    border-top: 1px solid var(--border);
    overflow-y: auto;
    transform: translateX(100%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
    margin-left: 0;
  }

  .nav__links--open {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__item { width: 100%; }

  .nav__link,
  .nav__mega-btn {
    width: 100%;
    padding: 0.9rem 0.75rem;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }

  .nav__mega-btn {
    justify-content: space-between;
  }

  /* Mega panel mobile: acordeón */
  .nav__mega-panel {
    position: static;
    transform: none;
    width: 100%;
    opacity: 1;
    pointer-events: auto;
    background: rgba(255,255,255,0.02);
    border: none;
    border-radius: 0;
    border-left: 2px solid rgba(0,212,255,0.2);
    backdrop-filter: none;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    transition: max-height 0.35s ease, padding 0.35s ease;
  }

  .nav__item--mega.is-open .nav__mega-panel {
    max-height: 500px;
    padding: 0.75rem;
  }

  .nav__mega-grid { grid-template-columns: 1fr; gap: 0; }

  .nav__mega-label { margin-left: 0.5rem; }

  .nav__mega-item { padding: 0.75rem 0.5rem; }

  .nav__intranet { display: none; }
}