/* ─── App Navigation ──────────────────────────
   CALCULADORA DRYWALL — Modern Redesign 2026
   ─────────────────────────────────────────── */
.app-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 56px;
  display: flex;
  align-items: center;
  background: rgba(14, 14, 14, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-inner {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #fff;
  text-decoration: none;
  line-height: 1;
}

.nav-brand span {
  color: #f5bb00;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(226, 226, 226, 0.5);
  text-decoration: none;
  transition: color 0.2s;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  line-height: 1;
}
.nav-link:hover {
  color: #fff;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(226, 226, 226, 0.5);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  transition: color 0.2s;
}
.nav-dropdown-trigger:hover {
  color: #fff;
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 1rem);
  right: 0;
  background: #1a1a1a;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0.625rem;
  padding: 0.5rem;
  min-width: 220px;
  z-index: 200;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.open .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-item {
  display: block;
  padding: 0.6rem 0.875rem;
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(226, 226, 226, 0.7);
  text-decoration: none;
  border-radius: 0.375rem;
  transition: background 0.15s, color 0.15s;
}
.nav-dropdown-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}

.nav-dropdown-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.06);
  margin: 0.375rem 0;
}