.navbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding: 0 0.3125rem;
  min-height: 5rem;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
  min-height: 5rem;
  will-change: background, box-shadow;
}

.navbar nav ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  gap: 0.625rem;
  color: var(--color-text-light);
}

.navbar nav ul li a {
  color: var(--color-text-light);
  text-decoration: none;
  font-weight: 500;
  transition: all 200ms;
}

.navbar nav ul li a:visited {
  color: var(--color-text-light);
}

.navbar nav ul li a:hover {
  cursor: pointer;
  color: var(--color-card-bg);
}

.navbar .menu__link {
  color: var(--color-accent);
  line-height: 2;
  position: relative;
}

.navbar .menu__link::before {
  content: '';
  width: 0;
  height: 2px;
  border-radius: 2px;
  background-color: var(--color-card-divider);
  position: absolute;
  bottom: -.25rem;
  left: 50%;
  transition: width .4s, left .4s;
}

.navbar .menu__link:hover::before {
  width: 100%;
  left: 0;
}




/* Estado scrolleado */
.navbar.is-scrolled {
  background: rgba(27, 40, 54, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* Ajuste para el contenido interno de la navbar en estado scrolleado */
.navbar.is-scrolled .navbar__nav ul li a {
  color: var(--color-text-soft);
}

.navbar.is-scrolled .navbar__toggle {
  color: var(--color-text-light);
}

/* ==========================================================================
   Responsive ajustes
   ========================================================================== */

@media (max-width: 48rem) {
  .navbar {
    padding: 0.5rem 0.75rem;
    min-height: 4.25rem;
  }

  #hero {
    padding-top: 4.25rem;
  }

  .navbar.is-scrolled .navbar__nav {
    /* El menú off-canvas mantiene su fondo independientemente del scroll */
    background: var(--color-bg-dark);
  }
}



/* Componente: Toggle Switch */
:root {
  /* Variables locales para el toggle, basadas en tus variables globales */
  --toggle-width: 2.75rem;      /* 44px */
  --toggle-height: 1.5rem;      /* 24px */
  --slider-size: 1.125rem;      /* 18px */
  --transition-duration: 0.3s;
}

.toggle-switch {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}


.toggle-switch__label {
    position: relative;

    width: 3.125rem;
    height: 1.75rem;

    display: block;

    background-color: var(--color-primary);
    border-radius: 999px;

    cursor: pointer;

    overflow: hidden;
}


.toggle-switch__input {
    position: absolute;

    width: 1px;
    height: 1px;

    opacity: 0;
}


.toggle-switch__slider {
    position: absolute;
    inset: 0;
}


.toggle-switch__slider::before {

    content: "";

    position: absolute;

    top: 50%;
    left: 0.25rem;

    width: 1.25rem;
    height: 1.25rem;

    transform: translateY(-50%);

    background-color: var(--color-text-white);

    border-radius: 50%;

    transition: transform .3s ease;
}


.toggle-switch__input:checked 
+ .toggle-switch__slider::before {

    transform:
        translate(1.375rem, -50%);
}


.toggle-switch__input:focus-visible
+ .toggle-switch__slider {

    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 48rem) {

  /* 768px */
  .navbar {
    text-align: center;
    padding: 0.625rem;
  }

  .navbar nav ul {
    justify-content: center;
    gap: 0.9375rem;
  }



}


.navbar__backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 999;
  pointer-events: none;
}

.navbar__backdrop.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
}

/* --- Botón hamburguesa --- */
.navbar__toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-text-light);
  padding: 0.5rem;
  border-radius: 0.25rem;
  cursor: pointer;
  transition: color 0.2s ease, background-color 0.2s ease;
  width: 2.75rem;
  height: 2.75rem;
  align-items: center;
  justify-content: center;
}

.navbar__toggle:hover,
.navbar__toggle:focus-visible {
  background-color: rgba(255, 255, 255, 0.08);
}

.navbar__toggle:focus-visible {
  outline: 0.125rem solid var(--color-accent);
  outline-offset: 0.125rem;
}

.navbar__toggle svg {
  width: 1.75rem;
  height: 1.75rem;
  stroke-width: 2;
}

/* --- Menú off-canvas --- */
.navbar__nav {
  /* Estilos desktop por defecto */
  display: block;
  opacity: 1;
  visibility: visible;
  transform: none;
  position: static;
  background: transparent;
  z-index: auto;
}

/* --- Móvil (768px y menores) --- */
@media (max-width: 48rem) {
  /* Mostrar botón hamburguesa */
  .navbar__toggle {
    display: flex;
  }

  /* Ocultar navegación desktop */
  .navbar__nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(20rem, 85vw);
    height: 100vh;
    background: var(--color-bg-dark);
    padding: 5rem 2rem 2rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0.35s ease;
    z-index: 1000;
    overflow-y: auto;
    box-shadow: -0.5rem 0 2rem rgba(0, 0, 0, 0.4);
    border-left: 0.0625rem solid rgba(255, 255, 255, 0.06);
  }

  .navbar__nav.is-open {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  /* Lista de enlaces en columna */
  .navbar__nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    width: 100%;
    padding: 0;
    margin: 0;
    list-style: none;
  }

  .navbar__nav ul li {
    width: 100%;
  }

  .navbar__nav ul li a {
    display: block;
    padding: 0.75rem 0.5rem;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-text-soft);
    text-decoration: none;
    border-radius: 0.375rem;
    transition: color 0.2s ease, background-color 0.2s ease, padding-left 0.2s ease;
    position: relative;
  }

  /* Efecto hover/active en móvil */
  .navbar__nav ul li a:hover {
    color: var(--color-text-white);
    background-color: rgba(255, 255, 255, 0.06);
    padding-left: 1rem;
  }

  .navbar__nav ul li a:focus-visible {
    outline: 0.125rem solid var(--color-accent);
    outline-offset: -0.125rem;
    background-color: rgba(255, 255, 255, 0.04);
  }

  .navbar__nav ul li a:active {
    background-color: rgba(255, 255, 255, 0.10);
    transform: scale(0.98);
  }

  /* Línea decorativa sutil en hover (similar al desktop) */
  .navbar__nav ul li a::before {
    content: '';
    position: absolute;
    bottom: 0.5rem;
    left: 0.5rem;
    width: 0;
    height: 0.125rem;
    background: var(--color-accent);
    border-radius: 0.0625rem;
    transition: width 0.3s ease;
  }

  .navbar__nav ul li a:hover::before {
    width: 1.5rem;
  }

  /* Separador entre enlaces (opcional, para mayor claridad) */
  .navbar__nav ul li:not(:last-child)::after {
    content: '';
    display: block;
    width: 100%;
    height: 0.0625rem;
    background: rgba(255, 255, 255, 0.05);
    margin: 0.25rem 0;
  }

  /* Ajuste para el switch de tema dentro del navbar en móvil */
  .navbar__actions {
    display: flex;
    gap: 0.5rem;
  }

  /* Asegurar que el logo y el switch no se vean afectados */
  .navbar img {
    flex-shrink: 0;
  }

  .toggle-switch {
    flex-shrink: 0;
  }
}









/* ==========================================================================
   Navegación Activa (Scrollspy)
   ========================================================================== */

/* Estado activo para enlaces de navegación */
.navbar__nav .menu__link.is-active {
  color: var(--color-text-white);
  font-weight: 600;
}

/* Línea decorativa para el enlace activo */
.navbar__nav .menu__link.is-active::before {
  width: 100%;
  left: 0;
  background-color: var(--color-accent);
}

/* Ajuste para móvil: enlaces activos en el menú off-canvas */
@media (max-width: 48rem) {
  .navbar__nav .menu__link.is-active {
    color: var(--color-text-white);
    background-color: rgba(255, 255, 255, 0.08);
    padding-left: 1rem;
  }

  .navbar__nav .menu__link.is-active::before {
    width: 1.5rem;
    left: 0.5rem;
  }
}

/* Transición suave para cambios de estado */
.navbar__nav .menu__link {
  transition: color 0.2s ease, background-color 0.2s ease, padding-left 0.2s ease;
}

.navbar__nav .menu__link::before {
  transition: width 0.3s ease, left 0.3s ease;
}