/* ============================================================
   DCS S.A. — Navigation
   Navbar fija, responsive, mobile menu
   ============================================================ */

/* ── NAVBAR BASE ── */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: var(--z-sticky);
  transition:
    height var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base);
}

.navbar.scrolled {
  height: var(--nav-height-scrolled);
  background: var(--nav-bg-scrolled);
  box-shadow: var(--shadow-nav);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-4);
}

/* ── LOGO ── */

.navbar__logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

.navbar__logo-link:hover {
  opacity: 0.85;
}

.navbar__logo {
  height: 38px;
  width: auto;
}

/* ── LINKS DESKTOP ── */

.navbar__nav {
  display: flex;
  align-items: center;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.navbar__link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-decoration: none;
  border-radius: var(--radius-md);
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast);
  letter-spacing: 0.01em;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-pill);
  transform: scaleX(0);
  transition: transform var(--transition-base);
  transform-origin: left;
}

.navbar__link:hover {
  color: var(--color-primary-hover);
  background: var(--color-primary-light);
}

.navbar__link:hover::after,
.navbar__link.active::after {
  transform: scaleX(1);
}

.navbar__link.active {
  color: var(--color-primary-hover);
  background: var(--color-primary-light);
}

/* ── CTA BUTTON ── */

.navbar__cta {
  flex-shrink: 0;
  margin-left: var(--space-2);
}

/* ── HAMBURGER (mobile) ── */

.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  cursor: pointer;
  gap: 5px;
  transition: background var(--transition-fast);
  flex-shrink: 0;
  padding: 0;
}

.navbar__hamburger:hover {
  background: var(--color-bg-light);
}

.hamburger__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-dark);
  border-radius: var(--radius-pill);
  transition:
    transform var(--transition-base),
    opacity var(--transition-base),
    width var(--transition-base);
  transform-origin: center;
}

/* Hamburger → X cuando está abierto */
.navbar__hamburger[aria-expanded="true"] .hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger[aria-expanded="true"] .hamburger__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.navbar__hamburger[aria-expanded="true"] .hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── MOBILE MENU ── */

.navbar__mobile {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 88vw);
  background: var(--color-white);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-overlay);
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
  overflow-y: auto;
  padding: var(--space-10) var(--space-4) var(--space-6);
  display: flex;
  flex-direction: column;
}

.navbar__mobile.open {
  transform: translateX(0);
}

.navbar__mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: calc(var(--z-overlay) - 1);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.navbar__mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}

.navbar__mobile-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: var(--space-6);
}

.navbar__mobile-link {
  display: block;
  padding: 14px 16px;
  font-size: 17px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.navbar__mobile-link:hover,
.navbar__mobile-link.active {
  background: var(--color-primary-light);
  color: var(--color-primary-hover);
}

.navbar__mobile-cta {
  margin-top: auto;
  width: 100%;
}

/* ── MAIN CONTENT OFFSET ── */

main {
  padding-top: var(--nav-height);
}

/* ── RESPONSIVE ── */

/* Entre 1080px y 1200px: reducir padding de links para que quepan los 7 items */
@media (max-width: 1200px) {
  .navbar__inner {
    gap: var(--space-2);
  }

  .navbar__link {
    padding: 7px 9px;
    font-size: 13px;
  }

  .navbar__cta {
    margin-left: 0;
  }
}

/* Por debajo de 1080px: cambiar a menú hamburger */
@media (max-width: 1080px) {
  .navbar__inner > nav,
  .navbar__cta {
    display: none;
  }

  .navbar__hamburger {
    display: flex;
  }
}

@media (max-width: 480px) {
  :root {
    --nav-height: 60px;
    --nav-height-scrolled: 52px;
  }

  .navbar__logo {
    height: 30px;
  }
}