/* ═══════════════════════════════════════════
   NEIX — nav.css
   Nav superior + tab bar
   ═══════════════════════════════════════════ */

nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--grafito);
  padding: 0 var(--pad-x);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-logo {
  width: 68px;
  flex-shrink: 0;
  display: block;
}

.nav-logo svg {
  width: 100%;
  height: auto;
  display: block;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-brand {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.28);
  font-weight: 500;
}

.nav-sep {
  width: 1px;
  height: 14px;
  background: rgba(255, 255, 255, 0.12);
}

.nav-area {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.48);
  font-weight: 500;
}

.nav-logout {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.55);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 12px;
  font-family: var(--ff-sans);
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.nav-logout:hover {
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--crema);
  background: rgba(255, 255, 255, 0.06);
}

/* Tab bar */
.tab-bar {
  position: sticky;
  top: 64px;
  z-index: 190;
  background: var(--grafito);
  padding: 0 var(--pad-x);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: flex-end;
}

.tab-btn {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  font-family: var(--ff-sans);
  color: rgba(255, 255, 255, 0.3);
  background: none;
  border: none;
  cursor: pointer;
  padding: 14px 22px 13px;
  border-bottom: 2px solid transparent;
  transition: color 0.18s, border-color 0.18s;
}

.tab-btn:hover {
  color: rgba(255, 255, 255, 0.6);
}

.tab-btn.active {
  color: var(--crema);
  border-bottom-color: var(--bordeaux);
}

/* Footer */
footer {
  padding: 22px var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--gris-claro);
}

.footer-label {
  font-size: 11px;
  color: var(--arena);
  letter-spacing: 0.06em;
}

.footer-logo {
  width: 50px;
}

.footer-logo svg {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 600px) {
  nav { height: 56px; }
  .nav-logo { width: 56px; }
  .nav-brand { display: none; }
  .tab-bar { top: 56px; overflow-x: auto; }
  .tab-btn { padding: 12px 14px 11px; white-space: nowrap; }
}