/* css/nav.css */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.nav.scrolled { border-bottom-color: var(--color-border); }

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 156px;
  height: 86px;
  background: var(--color-navy);
  border-radius: 10px;
  padding: 4px 10px;
  overflow: hidden;
  box-sizing: border-box;
}

.nav__logo img {
  height: 78px !important;
  width: auto !important;
  display: block;
  max-width: 100% !important;
  object-fit: contain;
}

/* Links */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-32);
  list-style: none;
}

.nav__links a {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink);
  transition: color var(--transition-fast);
}

.nav__links a:hover { color: var(--color-navy); }

/* CTA group */
.nav__cta {
  display: flex;
  align-items: center;
  gap: var(--space-16);
}

/* WhatsApp icon link */
.nav__whatsapp {
  display: flex;
  align-items: center;
  color: var(--color-muted);
  transition: color var(--transition-fast);
}
.nav__whatsapp:hover { color: var(--color-whatsapp); }
.nav__whatsapp svg { width: 20px; height: 20px; }

/* Hamburger (mobile only) */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: var(--space-8);
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile overlay */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-navy);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-32);
}
.nav__mobile.open { display: flex; }
.nav__mobile a {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-white);
  transition: opacity var(--transition-fast);
}
.nav__mobile a:hover { opacity: 0.7; }

/* Responsive */
@media (max-width: 768px) {
  .nav__inner { height: var(--nav-height); }
  .nav__logo {
    width: 124px;
    height: 68px;
    border-radius: 8px;
  }
  .nav__logo img { height: 60px !important; }
  .nav__links,
  .nav__cta { display: none; }
  .nav__hamburger {
    display: flex;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
  }

  .nav__mobile {
    padding: calc(var(--nav-height) + var(--space-32)) var(--gutter) var(--space-48);
    justify-content: flex-start;
    overflow-y: auto;
  }
  .nav__mobile a { font-size: clamp(1.7rem, 8vw, 2.25rem); }
  .nav__mobile .btn { width: auto; }
}

@media (max-width: 480px) {
  .nav__logo {
    width: 112px;
    height: 60px;
    padding: 3px 8px;
  }
  .nav__logo img { height: 54px !important; }
}