/* =========================================
   HEADER Y NAVEGACIÓN — Portafolio Juanita González
   ========================================= */

/* ── Header ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height-desktop);
  background-color: var(--color-header-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter-desktop);
}

/* ── Logo / Nombre ── */
.site-logo {
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

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

/* ── Navegación desktop ── */
.site-nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.site-nav a {
  font-family: var(--font-primary);
  font-size: var(--font-nav);
  font-weight: var(--font-weight-regular);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.site-nav a:hover {
  color: var(--color-accent);
}

.site-nav a.active {
  color: var(--color-accent);
  font-weight: var(--font-weight-bold);
}

/* ── Botón hamburguesa ── */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  cursor: pointer;
  gap: 5px;
  background: none;
  border: none;
  padding: 0;
  z-index: calc(var(--z-menu) + 1);
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background-color: var(--color-text);
  transition: all var(--transition-medium);
  transform-origin: center;
}

/* Estado abierto del hamburguesa */
.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Menú mobile overlay ── */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background-color: var(--color-bg);
  z-index: var(--z-menu);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity var(--transition-medium), transform var(--transition-medium);
  pointer-events: none;
}

.mobile-menu.is-active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.mobile-menu__nav a {
  font-family: var(--font-primary);
  font-size: 28px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
  opacity: 0;
  transform: translateY(12px);
  transition: color var(--transition-fast), opacity 0.3s ease, transform 0.3s ease;
}

.mobile-menu.is-active .mobile-menu__nav a {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger de animación para los links */
.mobile-menu.is-active .mobile-menu__nav a:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu.is-active .mobile-menu__nav a:nth-child(2) { transition-delay: 0.10s; }
.mobile-menu.is-active .mobile-menu__nav a:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu.is-active .mobile-menu__nav a:nth-child(4) { transition-delay: 0.20s; }
.mobile-menu.is-active .mobile-menu__nav a:nth-child(5) { transition-delay: 0.25s; }

.mobile-menu__nav a:hover,
.mobile-menu__nav a.active {
  color: var(--color-accent);
}

/* ── Responsive: ocultar nav desktop, mostrar hamburguesa ── */
@media (max-width: 1023px) {
  .site-header {
    height: var(--header-height-mobile);
    padding: 0 var(--gutter-tablet);
  }

  .site-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }
}

@media (max-width: 767px) {
  .site-header {
    padding: 0 var(--gutter-mobile);
  }
}