/* ============================================================
   navbar.css — Navegação principal + menu mobile (hamburger)
   ============================================================ */

.navbar {
  background: rgba(7, 25, 37, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--container-pad);
  position: sticky;
  top: 0;
  z-index: var(--z-navbar);
  border-bottom: 2px solid rgba(0, 212, 255, 0.15);
  min-height: 72px;
}

/* ---- Logo ---- */
.logo {
  font-family: var(--font-display);
  font-size: 2.2rem;
  letter-spacing: 0.08em;
  color: #fff;
  padding-block: 14px;
  position: relative;
  line-height: 1;
}

.logo span {
  color: var(--color-accent);
}

.logo::after {
  content: 'REFRIGERAÇÃO';
  position: absolute;
  bottom: 8px;
  left: 0;
  font-family: var(--font-condensed);
  font-size: 0.5rem;
  letter-spacing: 0.2em;
  color: var(--color-ice);
  opacity: 0.65;
  white-space: nowrap;
}

/* ---- Nav links (desktop) ---- */
.nav-links {
  display: flex;
  list-style: none;
  gap: 0;
}

.nav-link {
  display: block;
  padding: 26px 22px;
  color: var(--color-ice);
  font-family: var(--font-condensed);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-mid);
}

.nav-link:hover,
.nav-link.active {
  color: #fff;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* ---- Hamburger toggle (hidden on desktop) ---- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: calc(var(--z-navbar) + 1);
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-ice);
  border-radius: 2px;
  transition: transform var(--transition-mid), opacity var(--transition-fast);
}

/* Hamburger → X animation */
.navbar.is-open .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.navbar.is-open .nav-toggle__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.navbar.is-open .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}