/* ======================= */
/* VARIABLES Y RESET BASE */
/* ======================= */

:root {
  --azul: #1e90ff;
  --fondo: #0d1117;
  --texto: #ffffff;
  --gris: #c0c0c0;
  --borde: #1e90ff;
  --card-fondo: #0f172a;
  --card-borde: #1e293b;
  --sombra: rgba(30, 144, 255, 0.4);
  --fuente: 'Poppins', sans-serif;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --border-radius-sm: 6px;
  --border-radius-md: 8px;
  --transition-default: 0.3s ease-in-out;
}

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

body {
  background-color: var(--fondo);
  font-family: var(--fuente);
  color: var(--texto);
  padding: var(--spacing-lg) var(--spacing-md);
  line-height: 1.6;
}

.hidden {
  display: none;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
  padding: 0;
  margin: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ========== */
/* HERO LOGO */
/* ========== */

.hero {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
}

.hero-content .logo-img img {
  width: 80px;
  display: none;
}

@media (min-width: 769px) {
  .hero-content .logo-img img {
    display: block;
  }
}

/* ========= */
/* NAVBAR */
/* ========= */

.nav {
  background-color: #10172a;
  position: relative;
}

nav button img {
  border-radius: 8px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
}

.menu-toggle img {
  width: 36px;
  height: 36px;
}

.nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  padding: 1rem;
  gap: 1rem;
}

.nav a {
  color: var(--texto);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s;
}

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

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }


  .nav ul {
    display: none;
    flex-direction: column;
    background-color: #10172a;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    z-index: 999;
  }

  .nav ul.show {
    display: flex;
  }

  .nav ul li {
    padding: 0.5rem 0;
    text-align: center;
  }
}

@media (min-width: 769px) {
  .menu-toggle {
    display: none;
  }
}

/* ================ */
/* SECCIÓN GENERAL */
/* ================ */

.article-container {
  max-width: 960px;
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-lg);
  background-color: var(--card-fondo);
  border-radius: var(--border-radius-md);
  box-shadow: 0 0 15px var(--sombra);
  border: 1px solid var(--card-borde);
}

.article-title {
  color: var(--azul);
  text-align: center;
  margin-bottom: var(--spacing-lg);
  font-size: 2.5rem;
  line-height: 1.2;
}

.article-meta {
  color: var(--gris);
  text-align: center;
  margin-bottom: var(--spacing-lg);
  font-size: 0.9rem;
}

.article-section {
  margin-bottom: var(--spacing-lg);
}

.article-section h2 {
  color: var(--azul);
  margin-bottom: var(--spacing-md);
  font-size: 1.6rem;
}

.article-section h3 {
  color: var(--azul);
  font-size: 1.4rem;
  margin: 2rem 0 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--card-borde);
}

.article-section p {
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.article-section p a:hover,
.article-section li a:hover {
  color: var(--azul);
}

/* ================= */
/* SECCIÓN CÓDIGOS  */
/* ================= */

.code-example {
  background-color: #0d1224;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  overflow-x: auto;
  border: 1px solid var(--card-borde);
  font-size: 0.9rem;
  line-height: 1.4;
  position: relative;
}

.code-example button {
  position: absolute;
  bottom: var(--spacing-sm);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--azul);
  color: var(--texto);
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-weight: bold;
  transition: background-color var(--transition-default);
}

.code-example button:hover,
.code-example button:focus {
  background-color: #006ddc;
}

.code-example button.hidden,
.code-example .codigoArduinoCorto.hidden,
.code-example .codigoArduinoCompleto.hidden {
  display: none;
}

/* ================= */
/* SECCIÓN CROQUIS  */
/* ================= */

.croquis-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  align-items: center;
}

.croquis-image img {
  width: 280px;
  height: 280px;
  object-fit: cover;
  border-radius: var(--border-radius-md);
  box-shadow: 0 0 10px #00000088;
  border: 1px solid var(--card-borde);
}

.croquis-content {
  max-width: 600px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.croquis-content h3 {
  color: var(--azul);
  margin-bottom: var(--spacing-md);
  font-size: 1.2rem;
}

/* ======================== */
/* SECCIÓN DIAGRAMA IMG    */
/* ======================== */

#diagrama-circuito-section {
  text-align: center;
}

.diagrama-circuito-image {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: 0 4px 15px var(--sombra);
  margin: var(--spacing-md) auto;
  max-width: 800px;
}

.diagrama-circuito-image img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

/* =============== */
/* SECCIÓN EMOJIS */
/* =============== */

.emojis-section {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.emojis-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.emoji-item {
  background-color: var(--card-fondo);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--card-borde);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  padding: var(--spacing-sm);
  max-width: 150px;
  flex: 1 1 150px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.emoji-item img {
  width: 100%;
  height: auto;
}

/* ============== */
/* SECCIÓN FOOTER */
/* ============== */

.footer {
  text-align: center;
  padding: var(--spacing-lg);
  font-size: 0.9rem;
  background-color: #0d1224;
  color: var(--gris);
  margin-top: var(--spacing-lg);
}

.footer-links {
  margin-top: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: center;
}

.footer-links a {
  color: var(--azul);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: color var(--transition-default);
}

.footer-links a:hover,
.footer-links a:focus {
  color: #006ddc;
}

.footer-links img.icono-red {
  width: 20px;
  height: 20px;
}

/* ========================== */
/* MEDIA QUERIES RESPONSIVAS */
/* ========================== */

@media (min-width: 768px) {
  .croquis-section {
    flex-direction: row;
    align-items: center;
    justify-content: space-evenly;
  }

  .croquis-content {
    align-items: flex-start;
    text-align: left;
    display: block;
  }

  .croquis-title {
    text-align: center;
  }

  .croquis-text {
    text-align: center;
  }

  .footer-links {
    flex-direction: row;
    justify-content: center;
    gap: var(--spacing-lg);
  }

  .emojis-container {
    justify-content: flex-start;
  }
}

@media (min-width: 1024px) {
  .article-title {
    font-size: 2.5rem;
  }

  .article-section h2 {
    font-size: 1.8rem;
  }

  .emojis-container {
    justify-content: center;
  }
}

/* ======================== */
/* SECCIÓN VIDEO YOUTUBE    */


.youtube-video {
  position: relative;
  max-width: 680px; /* Limita el tamaño máximo del video */
  width: 100%; /* Permite que sea más pequeño si el contenedor es estrecho */
  padding-bottom: 56.25%; /* Proporción 16:9 */
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  margin-left: auto;  /* Centra el contenedor horizontalmente */
  margin-right: auto; /* Centra el contenedor horizontalmente */
  overflow: hidden;
  box-shadow: 0 4px 15px var(--sombra);
}

.youtube-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}