/*
=========================
FUENTES TIPOGRÁFICAS
=========================
*/
@import url("https://fonts.googleapis.com/css?family=Open+Sans|Roboto:400,700&display=swap");

/*
=========================
VARIABLES CSS
=========================
*/
:root {
  --clr-body: hsl(210, 36%, 96%);
  --clr-1: hsl(209, 61%, 16%);
  --clr-2: hsla(182, 63%, 54%);
  --clr-3: hsl(210, 22%, 49%);
  --clr-4: hsl(212, 33%, 89%);
  --clr-5: hsl(205, 100%, 96%);
  --clr-white: #fff;
  --btn-hover: hsla(182, 63%, 44%, 1);
  --spacing: 0.25rem;

  --ff-secondary: "Open Sans", sans-serif;
  --ff-primary: "Roboto", sans-serif;

  --transition: all 0.3s linear;

  --radius: 0.5rem;
  --light-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --shadow-1: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-3: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);

  --max-width: 1170px;
  --fixed-width: 620px;
}

/*
=========================
CONFIGURACIÓN GLOBAL
=========================
*/
html {
  scroll-behavior: smooth;
}

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  background: var(--clr-body);
  color: var(--clr-1);
  line-height: 1.5;
  font-family: var(--ff-secondary);
  font-size: 0.875rem;
}

/* Encabezados */
h1,
h2,
h3 {
  letter-spacing: var(--spacing);
  text-transform: capitalize;
  line-height: 1;
  font-family: var(--ff-primary);
}

h1 {
  font-size: 2.6rem;
}

h4 {
  margin-bottom: 0.8rem;
  letter-spacing: var(--spacing);
  font-size: 1rem;
}

/* Párrafos */
p {
  margin-bottom: 1.25rem;
  color: var(--clr-letter-3);
  /* Esta variable no está definida arriba */
}

/* Imágenes */
img {
  display: block;
}

/* Listas */
ul {
  list-style-type: none;
  margin-bottom: 0;
  padding-left: 0;
}

/* Enlaces */
a {
  text-decoration: none;
}

/*
=========================
BARRA DE NAVEGACIÓN
=========================
*/
nav {
  background: var(--clr-white);
  padding: 1rem 1.5rem;
  text-align: center;
}

/* Logo y botón hamburguesa */
.nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  height: 40px;
}

.nav-toggle {
  font-size: 1.5rem;
  color: var(--clr-1);
  background: transparent;
  border-color: transparent;
  transition: var(--transition);
  cursor: pointer;
}

.nav-toggle:hover {
  color: var(--clr-2);
}

/* Contenedor de enlaces oculto por defecto */
.links-container {
  height: 0;
  overflow: hidden;
  transition: var(--transition);
}

/* Clase añadida por JS para mostrar enlaces */
.show-links {
  height: 200px;
}

/* Enlaces del menú */
.links a {
  background: var(--clr-white);
  color: var(--clr-1);
  font-size: 0.95rem;
  text-transform: capitalize;
  letter-spacing: var(--spacing);
  display: block;
  transition: var(--transition);
  font-weight: bold;
  padding: 0.6rem 0;
}

.links a:hover {
  color: var(--clr-2);
}

/*
=========================
BOTONES GENERALES
=========================
*/
.btn-sb {
  text-transform: uppercase;
  background: transparent;
  padding: 0.375rem 0.75rem;
  letter-spacing: var(--spacing);
  display: inline-block;
  transition: var(--transition);
  font-size: 0.875rem;
  border: 2px solid;
  cursor: pointer;
  z-index: 100;
}

.btn-white {
  color: var(--clr-white);
  border-color: var(--clr-white);
  border-radius: 0;
  padding: 0.5rem 1rem;
}

.btn-sb:hover {
  background: var(--clr-white);
  color: var(--clr-2);
}

/*
=========================
BOTÓN DE LOGIN
=========================
*/
.login {
  color: var(--clr-2);
  font-weight: bold;
}

.login:hover {
  color: var(--clr-2);
}

/*
=========================
BOTÓN FLOTANTE TOP
=========================
*/
.top-link {
  font-size: 1.25rem;
  position: fixed;
  bottom: 3rem;
  right: 3rem;
  background: var(--clr-2);
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  color: var(--clr-white);
  animation: bounce 2s ease-in-out infinite;
  visibility: hidden;
  z-index: -100;
}

/*
===================================
ANIMACIONES
===================================
*/

/* Animación de rebote usada en el botón flotante */
@keyframes bounce {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.5);
  }

  100% {
    transform: scale(1);
  }
}

/*
===================================
CLASES DE ESTADO Y EFECTOS JS
===================================
*/

/* Muestra el botón flotante al hacer scroll */
.show-link {
  visibility: visible;
  z-index: 100;
}

/* Navbar fija al hacer scroll */
.fixed-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--clr-white);
  box-shadow: var(--light-shadow);
  z-index: 10;
}

.fixed-nav .links a {
  color: var(--clr-1);
}

.fixed-nav .links a:hover {
  color: var(--clr-2);
}

/*
===================================
MENÚ DESPLEGABLE DE USUARIO
===================================
*/

.btn-sb {
  position: relative;
}

/* Contenedor del dropdown */
.dropdown-login {
  display: none;
  position: absolute;
  top: 95%;
  left: 0;
  background-color: #fff;
  border: 1px solid #ddd;
  box-shadow: var(--light-shadow);
  z-index: 1000;
  min-width: 150px;
  padding: 0.5rem 0;
  margin-top: 0.2rem;
}

/* Mostrar dropdown al hacer hover */
.btn-sb:hover .dropdown-login {
  display: block;
}

/* Opciones del menú */
.dropdown-login a {
  display: block;
  padding: 0.2rem 0.8rem;
  margin: 0.1rem 0.2rem;
  color: var(--clr-3);
  text-decoration: none;
  transition: background-color 0.3s;
  font-size: 0.8rem;
}

/* Hover de las opciones */
.dropdown-login a:hover {
  color: #007bff;
}

/* ------- FIN menú desplegable ------- */


/*
===================================
CONTENEDOR PRINCIPAL DE LA PÁGINA
===================================
*/
.container-pagina {
  width: 90vw;
  margin: 0 auto;
  max-width: 1200px;
  padding: 3rem 0;
  height: auto;
}


/*
===================================
FOOTER
===================================
*/
footer {
  background: var(--clr-1);
  padding: 5rem 1rem;
}

footer p {
  color: var(--clr-white);
  text-align: center;
  text-transform: capitalize;
  letter-spacing: var(--spacing);
  margin-bottom: 0;
}


/*
===================================
MEDIA QUERIES (≥1100px)
===================================
*/

@media screen and (min-width: 1100px) {

  /* Estilos generales */
  h1 {
    font-size: 4rem;
  }

  .title h2 {
    font-size: 2.5rem;
  }

  p {
    font-size: 1.1rem;
  }

  /* Estilos para navbar en pantallas grandes */
  nav {
    background: var(--clr-white);
    box-shadow: var(--light-shadow);
  }

  .nav-center {
    width: 90vw;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .nav-header {
    padding: 0;
  }

  /* Oculta el botón toggle */
  .nav-toggle {
    display: none;
  }

  /* Asegura que los links sean visibles */
  .links-container {
    height: auto !important;
  }

  /* Links horizontales */
  .links {
    display: flex;
  }

  .links a {
    background: transparent;
    color: var(--clr-1);
    font-size: 1.2rem;
    text-transform: capitalize;
    letter-spacing: var(--spacing);
    display: block;
    transition: var(--transition);
    margin: 0 1rem;
    font-weight: bold;
    padding: 0;
  }

  .links a:hover {
    color: var(--clr-2);
  }
}