/**
 * Header Layout - Tema Oscuro Minimalista
 * Navegación principal y branding
 */

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  /* flex-wrap evita overflow horizontal cuando el nav + barra de servicios (admin)
     no caben: el nav baja de linea en vez de desbordar la pagina. */
  flex-wrap: wrap;
  row-gap: var(--spacing-2);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-3) var(--spacing-6);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

header.scrolled {
  background-color: var(--color-bg-secondary);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-md);
}

/* Logo */
.logo {
  font-size: var(--font-size-lg);
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.logo b {
  color: var(--color-primary-light);
}

.logo a {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  padding: var(--spacing-1) var(--spacing-3);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--border-radius-full);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.logo a:hover {
  background-color: var(--color-bg-hover);
  color: var(--color-primary-light);
  border-color: var(--color-primary);
}

.service-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--border-radius-full);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-tertiary);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.service-status-label {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.service-status-item {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: 0 var(--spacing-1);
  border-radius: var(--border-radius-full);
}

.service-status-check,
.service-status-restart {
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-primary);
  font-size: var(--font-size-xs);
  padding: 2px var(--spacing-2);
  border-radius: var(--border-radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.service-status-check:hover,
.service-status-restart:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}

.service-status-check:disabled,
.service-status-restart:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.service-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background-color: var(--color-text-muted);
  display: inline-block;
}

.service-status-item.is-ok .service-status-dot {
  background-color: var(--color-success);
}

.service-status-item.is-warn .service-status-dot {
  background-color: var(--color-warning);
}

.service-status-item.is-error .service-status-dot {
  background-color: var(--color-error);
}

/* Navigation */
nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-1);
  align-items: center;
  margin: 0;
  padding: 0;
}

nav ul li {
  margin: 0;
}

nav ul li a {
  padding: var(--spacing-2) var(--spacing-4);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

nav ul li .nav-link {
  padding: var(--spacing-2) var(--spacing-4);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  position: relative;
  background: transparent;
  border: none;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background-color: var(--color-primary);
  transition: transform var(--transition-base);
}

nav ul li a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

nav ul li a:hover {
  color: var(--color-primary-light);
  background-color: var(--color-bg-tertiary);
}

nav ul li .nav-link:hover {
  color: var(--color-primary-light);
  background-color: var(--color-bg-tertiary);
}

nav ul li a.active {
  color: var(--color-primary-light);
  background-color: var(--color-bg-tertiary);
}

nav ul li .nav-link.active {
  color: var(--color-primary-light);
  background-color: var(--color-bg-tertiary);
}

.nav-dropdown.is-active .nav-link {
  color: var(--color-primary-light);
  background-color: var(--color-bg-tertiary);
}

/* Dropdowns */
.nav-dropdown {
  position: relative;
}

.nav-dropdown::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 10px;
}

.nav-dropdown-toggle::after {
  content: '▾';
  margin-left: var(--spacing-2);
  font-size: 0.75em;
  opacity: 0.7;
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  min-width: 210px;
  padding: var(--spacing-2);
  border-radius: var(--border-radius-lg);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  visibility: hidden;
  pointer-events: none;
}

.nav-dropdown-menu a {
  display: block;
  padding: var(--spacing-2) var(--spacing-3);
  color: var(--color-text-secondary);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
}

.nav-dropdown-menu a:hover {
  color: var(--color-primary-light);
  background-color: var(--color-bg-tertiary);
}

.nav-dropdown-menu a.active {
  color: var(--color-primary-light);
  background-color: var(--color-bg-tertiary);
  font-weight: var(--font-weight-semibold);
  border-left: 3px solid var(--color-primary);
  padding-left: calc(var(--spacing-3) - 3px);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu,
.nav-dropdown.is-open .nav-dropdown-menu {
  display: block;
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
}

/* User Menu */
.user-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-full);
  background-color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  color: var(--color-text-primary);
  cursor: pointer;
  padding: var(--spacing-2);
  border-radius: var(--border-radius-md);
  transition: background-color var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background-color: var(--color-bg-tertiary);
}

/* Mobile Menu Overlay */
/*
 * El overlay debe quedar DEBAJO del header (z-index: --z-sticky = 1020).
 * El nav vive dentro del header, por lo que su z-index: --z-modal (1050)
 * es relativo al stacking context del header; desde la raíz, el header
 * completo vale 1020. Un overlay con z-index mayor (ej: 1049) queda
 * encima del header y bloquea los clicks en el menú.
 */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-sticky) - 1);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
  header {
    padding: var(--spacing-3) var(--spacing-4);
  }

  .logo {
    font-size: var(--font-size-lg);
  }

  .mobile-menu-toggle {
    display: block;
  }

  nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    box-shadow: var(--shadow-xl);
    transition: left var(--transition-base);
    z-index: var(--z-modal);
    padding: var(--spacing-6);
    overflow-y: auto;
  }

  nav.active {
    left: 0;
  }

  nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-1);
  }

  nav ul li {
    width: 100%;
  }

  nav ul li a {
    display: block;
    width: 100%;
    padding: var(--spacing-4);
    border-radius: var(--border-radius-md);
  }

  nav ul li .nav-link {
    display: flex;
    width: 100%;
    padding: var(--spacing-4);
    border-radius: var(--border-radius-md);
    align-items: center;
    justify-content: space-between;
  }

  nav ul li a::after {
    display: none;
  }

  nav ul li a:hover {
    background-color: var(--color-bg-tertiary);
  }

  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    background-color: transparent;
    padding: 0 var(--spacing-2) var(--spacing-2);
    opacity: 1;
    transform: none;
    transition: none;
  }

  .nav-dropdown.is-open .nav-dropdown-menu {
    display: block;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-dropdown-menu a {
    padding: var(--spacing-2) var(--spacing-4);
  }

  .nav-dropdown::after {
    display: none;
  }
}

@media (max-width: 480px) {
  .logo a {
    display: none;
  }

  .service-status {
    display: none;
  }
}