.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  z-index: var(--z-fixed, 1000);
  transition: background-color 0.3s ease-in-out,
    backdrop-filter 0.3s ease-in-out, box-shadow 0.3s ease-in-out,
    padding 0.3s ease-in-out;
  background-color: transparent;
  box-shadow: none;
}

/* --- Clase para el cambio de fondo, padding y efecto blur del header --- */
.navbar.scrolled-header-bg {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  padding: 10px 40px;
}

body.dark-theme .navbar.scrolled-header-bg {
  /* Usa las variables HSL del body en dark-theme */
  background-color: hsla(
    var(--body-hue, 0),
    var(--body-saturation, 0%),
    var(--body-lightness, 8%),
    0.65
  );
}

/* --- Logo --- */
.nav-logo img {
  height: 69px;
  vertical-align: middle;
  transition: filter 0.3s ease-in-out, height 0.3s ease-in-out;
}

.navbar.scrolled-header-bg .nav-logo img {
  height: 45px;
}

/* --- MENÚ DE NAVEGACIÓN (Inicialmente oculto en móvil, se muestra con JS) --- */
.nav-menu {
  position: fixed;
  top: var(--header-height, 3.5rem);
  left: -100%;
  width: 100%;
  height: calc(100vh - var(--header-height, 3.5rem));
  background-color: var(--nav-menu-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  transition: left 0.4s cubic-bezier(0.77, 0, 0.175, 1);
  overflow-y: auto;
}

.nav-menu.show-menu {
  left: 0;
}

/* --- Enlaces de Navegación y Botón de Tema --- */
.nav-links a,
.theme-toggle-btn,
.nav-toggle {
  color: var(--white-color);
  transition: color 0.3s ease-in-out;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin: 0;
  padding: 0;
}

.nav-links li {
  margin-left: 0;
  margin-bottom: 1.6rem;
}

.nav-links a {
  text-decoration: none;
  padding: 8px 4px;
  position: relative;
  display: inline-block;
  font-weight: var(--font-medium, 500);
}

.nav-links a::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--first-color);
  transform: scaleX(0);
  transform-origin: bottom left;
  transition: transform 0.3s ease-out;
}

.nav-links a:hover,
.theme-toggle-btn:hover {
  color: var(--first-color);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-links a.active-link {
  color: var(--first-color);
  font-weight: var(--font-medium, 500);
}

/* Mostrar el subrayado ::after por defecto para el enlace activo */
.nav-links a.active-link::after {
  transform: scaleX(1);
}

.nav-links a.active-link:hover {
  color: var(--first-color);
}

.nav-link {
  text-decoration: none;
  font-size: var(--h2-font-size);
  font-weight: var(--font-medium, 500);
  padding: 0.5rem 0;
  position: relative;
  display: inline-block;
  transition: color 0.3s ease-in-out;
}

.nav-link.login-cta-link {
  font-weight: var(--font-medium);
  color: var(--first-color);
  border: 1px solid var(--first-color);
  padding: 0.5rem 1rem;
  border-radius: 0.9rem;
}

.nav-link.login-cta-link:hover {
  color: var(--white-color);
  background-color: var(--first-color);
}

/* --- Controles de Navegación (botón de tema) --- */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.theme-toggle-btn,
.nav-toggle {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0.5rem;
  transition: color 0.3s ease-in-out;
}

.nav-toggle {
  font-size: 1.5rem;
}

.theme-toggle-btn i,
.nav-toggle i {
  font-size: 1.5rem;
  line-height: 1;
}

.theme-toggle-btn:hover,
.nav-toggle:hover {
  color: var(--first-color);
}

/* --- Clase para el cambio de color de texto/iconos del header y filtro del logo --- */
.navbar.scrolled-header-text .nav-links a,
.navbar.scrolled-header-text .theme-toggle-btn,
.navbar.scrolled-header-text .nav-toggle {
  color: var(--text-color);
}

.navbar.scrolled-header-text .nav-links a:hover,
.navbar.scrolled-header-text .theme-toggle-btn:hover,
.navbar.scrolled-header-text .nav-toggle:hover {
  color: var(--first-color);
}

.navbar.scrolled-header-text .nav-link.login-cta-link:hover {
  color: var(--white-color);
}

.navbar.scrolled-header-text .nav-links a.active-link {
  color: var(--first-color);
  font-weight: var(--font-medium, 500);
}

.navbar.scrolled-header-text .nav-logo img {
  filter: none;
}

/* --- Estilos específicos para Dark Theme cuando el texto/iconos cambian de color --- */
body.dark-theme .navbar.scrolled-header-text .nav-links a,
body.dark-theme .navbar.scrolled-header-text .theme-toggle-btn,
body.dark-theme .navbar.scrolled-header-text .nav-toggle {
  color: var(--text-color);
}

body.dark-theme .navbar.scrolled-header-text .nav-links a:hover,
body.dark-theme .navbar.scrolled-header-text .theme-toggle-btn:hover,
body.dark-theme .navbar.scrolled-header-text .nav-toggle:hover {
  color: var(--first-color);
}

body.dark-theme .navbar.scrolled-header-text .nav-link.login-cta-link:hover {
  color: var(--white-color);
}

body.dark-theme .navbar.scrolled-header-text .nav-links a.active-link {
  color: var(--first-color);
  font-weight: var(--font-medium, 500);
}

.nav-links a.active-link {
  color: var(--first-color);
  font-weight: var(--font-medium, 500);
}

@media screen and (min-width: 768px) {
  .navbar {
    padding: 1.5rem 2rem;
  }

  .navbar.scrolled-header-bg {
    padding: 1rem 2rem;
  }

  .nav-logo img {
    height: 69px;
  }

  .navbar.scrolled-header-bg .nav-logo img {
    height: 45px;
  }
}

/* DESKTOP / LAPTOP - (ej. a partir de 992px o 1024px)
   A esta resolución, el menú hamburguesa desaparece y los enlaces se muestran en línea.
*/
@media screen and (min-width: 992px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    position: static;
    left: 0;
    width: auto;
    height: auto;
    background-color: transparent;
    padding: 0;
    flex-direction: row;
    overflow-y: visible;
    margin-left: auto;
  }

  body.dark-theme .nav-menu {
    background-color: transparent;
  }

  .nav-links {
    flex-direction: row;
    align-items: center;
  }

  .nav-links li {
    margin-left: 2rem;
    margin-bottom: 0;
  }

  .nav-link {
    font-size: var(--normal-font-size);
    color: var(--white-color);
    padding: 8px 4px;
  }

  /* Estilos para la línea inferior y active-link que ya tenías */
  .nav-link::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--first-color);
    transform: scaleX(0);
    transform-origin: bottom left;
    transition: transform 0.3s ease-out;
  }

  .nav-link:hover::after {
    transform: scaleX(1);
  }

  .nav-link.active-link::after {
    transform: scaleX(1);
  }

  .nav-link:hover,
  .nav-link.active-link:hover {
    color: var(--first-color);
  }

  .nav-link.active-link {
    color: var(--first-color);
  }

  /* Aplicar cambio de color de texto de enlaces con .scrolled-header-text */
  .navbar.scrolled-header-text .nav-links .nav-link {
    color: var(--text-color);
  }

  .navbar.scrolled-header-text .nav-links .nav-link:hover,
  .navbar.scrolled-header-text .nav-links .nav-link.active-link {
    color: var(--first-color);
  }

  .navbar.scrolled-header-text .nav-link.login-cta-link:hover {
    color: var(--white-color);
  }

  body.dark-theme .navbar.scrolled-header-text .nav-links .nav-link {
    color: var(--text-color);
  }

  body.dark-theme .navbar.scrolled-header-text .nav-links .nav-link:hover,
  body.dark-theme
    .navbar.scrolled-header-text
    .nav-links
    .nav-link.active-link {
    color: var(--first-color);
  }

  body.dark-theme .navbar.scrolled-header-text .nav-link.login-cta-link:hover {
    color: var(--white-color);
  }

  /* Asegurar que los controles (theme toggle) estén bien posicionados */
  .nav-controls {
    gap: 1rem;
  }

  .theme-toggle-btn {
    margin-left: 1rem;
  }
}