/* ==========================================================================
   Header / Navegación
   ========================================================================== */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--dur-base) var(--ease-standard),
              border-color var(--dur-base) var(--ease-standard);
}

.header.is-scrolled {
  box-shadow: var(--shadow-sm);
  border-bottom-color: rgba(26, 26, 26, 0.06);
}

.header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  padding-block: var(--sp-3);
}

/* ---- Logotipo ---- */
.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}

.logo__img {
  height: 46px;
  width: auto;
  display: block;
}

/* ---- Nav desktop ---- */
.nav {
  display: none;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.nav__link {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--c-text-primary);
  position: relative;
  padding-block: var(--sp-1);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -2px;
  height: 2px;
  background: var(--c-secondary);
  transition: right var(--dur-base) var(--ease-out);
}

.nav__link:hover::after,
.nav__link:focus-visible::after {
  right: 0;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.header__cta {
  display: none;
}

/* ---- Botón hamburguesa ---- */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--c-text-primary);
}

.nav-toggle__box {
  position: relative;
  width: 22px;
  height: 16px;
}

.nav-toggle__line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-standard),
              opacity var(--dur-base) var(--ease-standard),
              top var(--dur-base) var(--ease-standard);
}

.nav-toggle__line:nth-child(1) { top: 0; }
.nav-toggle__line:nth-child(2) { top: 7px; }
.nav-toggle__line:nth-child(3) { top: 14px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  top: 7px;
  transform: rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  top: 7px;
  transform: rotate(-45deg);
}

/* ---- Menú móvil (drawer) ---- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-mobile-menu);
  background: var(--c-white);
  display: flex;
  flex-direction: column;
  padding: var(--sp-5) var(--container-pad) var(--sp-7);
  transform: translateX(100%);
  transition: transform var(--dur-slow) var(--ease-out);
  visibility: hidden;
}

.mobile-menu.is-open {
  transform: translateX(0);
  visibility: visible;
}

.mobile-menu__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-8);
}

.mobile-menu__close {
  width: 44px;
  height: 44px;
  border: none;
  background: var(--c-bg-alt);
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.mobile-menu__link {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  padding-block: var(--sp-3);
  border-bottom: 1px solid var(--c-bg-alt);
  color: var(--c-text-primary);
}

.mobile-menu__footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.mobile-menu__phone {
  font-family: var(--font-mono);
  color: var(--c-text-secondary);
  font-size: var(--fs-sm);
}

body.menu-open {
  overflow: hidden;
}

@media (min-width: 900px) {
  .nav {
    display: block;
  }
  .nav-toggle {
    display: none;
  }
  .header__cta {
    display: inline-flex;
  }
}