/* =========================================
   MINISITIO: INTERESTELAR
   Archivo: estilos.css
   ========================================= */

/* --- Fuente y reset general --- */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&family=Exo+2:wght@300;400;700&display=swap');

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

body {
  font-family: 'Exo 2', Arial, sans-serif;
  font-size: 16px;
  background-color: #0a0a1a;
  color: #d0d8e8;
  line-height: 1.7;
}

/* --- Cabecera --- */
header {
  background-color: #05050f;
  border-bottom: 2px solid #1a3a6a;
  padding: 20px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header h1 {
  font-family: 'Orbitron', Arial, sans-serif;
  font-size: 1.6em;
  color: #4fc3f7;
  letter-spacing: 3px;
  text-transform: uppercase;
}

header .subtitulo-header {
  font-size: 0.75em;
  color: #607d8b;
  letter-spacing: 2px;
}

/* --- Navegación --- */
nav {
  background-color: #070714;
  padding: 0 40px;
  border-bottom: 1px solid #1a2a4a;
}

nav a {
  display: inline-block;
  padding: 14px 24px;
  color: #90a4ae;
  text-decoration: none;
  font-family: 'Exo 2', Arial, sans-serif;
  font-size: 0.9em;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-bottom: 3px solid transparent;
  transition: color 0.3s, border-bottom 0.3s;
}

nav a:visited {
  color: #7986cb;
}

nav a:hover {
  color: #4fc3f7;
  border-bottom: 3px solid #4fc3f7;
}

/* --- Contenido principal --- */
main {
  max-width: 960px;
  margin: 40px auto;
  padding: 0 30px;
}

/* --- Sección héroe (portada index) --- */
.heroe {
  display: flex;
  gap: 40px;
  align-items: flex-start;
  margin-bottom: 50px;
}

.heroe img {
  width: 260px;
  border-radius: 6px;
  border: 2px solid #1a3a6a;
  opacity: 0.85;
  transition: opacity 0.4s;
}

.heroe img:hover {
  opacity: 1;
}

.heroe-texto h2 {
  font-family: 'Orbitron', Arial, sans-serif;
  font-size: 1.8em;
  color: #4fc3f7;
  margin-bottom: 8px;
}

.heroe-texto .anyo {
  color: #f0a500;
  font-weight: 700;
  font-size: 1em;
  margin-bottom: 16px;
}

/* --- Encabezados de sección --- */
h2 {
  font-family: 'Orbitron', Arial, sans-serif;
  font-size: 1.2em;
  color: #4fc3f7;
  margin-top: 40px;
  margin-bottom: 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid #1a3a6a;
  letter-spacing: 2px;
  text-transform: uppercase;
}

h3 {
  color: #f0a500;
  font-size: 1em;
  margin: 20px 0 8px;
}

/* --- Listas con viñeta personalizada --- */
ul.lista-datos {
  list-style-image: url('imagenes/vineta.svg');
  padding-left: 24px;
  margin: 10px 0;
}

ul.lista-datos li {
  padding: 4px 0;
  color: #b0bec5;
}

ul.lista-datos li span.destacado {
  color: #4fc3f7;
  font-weight: 700;
}

/* --- Tabla --- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.95em;
}

thead tr {
  background-color: #1a3a6a;
  color: #4fc3f7;
  font-family: 'Orbitron', Arial, sans-serif;
  font-size: 0.85em;
  letter-spacing: 1px;
  text-transform: uppercase;
}

thead th {
  padding: 12px 16px;
  text-align: left;
  border: 1px solid #1e4080;
}

tbody td {
  padding: 10px 16px;
  border: 1px solid #1a2a4a;
  color: #cfd8dc;
}

tbody tr:nth-child(even) {
  background-color: #0d0d22;
}

tbody tr:hover {
  background-color: #0d2040;
  color: #ffffff;
  transition: background-color 0.2s;
}

/* --- Párrafos y texto --- */
p {
  margin-bottom: 14px;
  color: #b0bec5;
}

p em {
  color: #f0a500;
  font-style: normal;
  font-weight: 700;
}

/* --- Botones --- */
.boton {
  display: inline-block;
  background-color: #1a3a6a;
  color: #4fc3f7;
  border: 1px solid #4fc3f7;
  padding: 10px 22px;
  font-family: 'Exo 2', Arial, sans-serif;
  font-size: 0.9em;
  letter-spacing: 1px;
  cursor: pointer;
  border-radius: 4px;
  text-transform: uppercase;
  transition: background-color 0.3s, color 0.3s;
  margin: 8px 4px;
}

.boton:hover {
  background-color: #4fc3f7;
  color: #05050f;
}

/* --- Caja de resultado JS --- */
.resultado-js {
  background-color: #050510;
  border: 1px solid #1a3a6a;
  border-left: 4px solid #4fc3f7;
  padding: 16px 20px;
  margin: 16px 0;
  border-radius: 4px;
  font-size: 0.95em;
  color: #4fc3f7;
  min-height: 50px;
}

/* --- Bloque de texto oculto --- */
.bloque-oculto {
  display: none;
  background-color: #0a0a2a;
  border: 1px solid #1a3a6a;
  padding: 20px;
  border-radius: 6px;
  margin-top: 14px;
  color: #b0bec5;
  line-height: 1.8;
}

/* --- Sección de curiosidades --- */
.tarjeta-curiosidad {
  background-color: #0d0d22;
  border: 1px solid #1a2a4a;
  border-left: 4px solid #f0a500;
  padding: 16px 20px;
  margin: 12px 0;
  border-radius: 4px;
}

.tarjeta-curiosidad h3 {
  margin: 0 0 6px;
  font-size: 0.95em;
}

/* --- Calculadora --- */
.calculadora {
  background-color: #0d0d22;
  border: 1px solid #1a3a6a;
  padding: 24px;
  border-radius: 8px;
  margin: 20px 0;
}

.calculadora label {
  display: block;
  color: #90a4ae;
  font-size: 0.9em;
  margin-bottom: 6px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.calculadora input[type="number"],
.calculadora select {
  background-color: #05050f;
  border: 1px solid #1a3a6a;
  color: #d0d8e8;
  padding: 10px 14px;
  font-family: 'Exo 2', Arial, sans-serif;
  font-size: 0.95em;
  width: 100%;
  margin-bottom: 16px;
  border-radius: 4px;
}

/* --- Pie de página --- */
footer {
  text-align: center;
  padding: 30px;
  margin-top: 60px;
  border-top: 1px solid #1a2a4a;
  font-size: 0.8em;
  color: #37474f;
  letter-spacing: 1px;
}

/* --- Galería de imágenes --- */
.galeria {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 20px 0;
}

.galeria img {
  width: 180px;
  height: 110px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid #1a3a6a;
  opacity: 0.75;
  transition: opacity 0.4s, transform 0.3s;
}

.galeria img:hover {
  opacity: 1;
  transform: scale(1.04);
}