/* ==================
   ESTILOS GENERALES 
   ================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body.dark-theme {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: #0b0c10;
    color: #c5c6c7;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Cabecera / Navegación Global */
.header {
    background-color: #1f2833;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}
.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}
.logo {
  color: #fff;
  text-decoration: none;
  font-size: 1.5rem;
}
/*.logo {
    font-size: 20px;
    font-weight: bold;
    letter-spacing: 2px;
    color: #66fcf1;
    text-shadow: 0 0 5px rgba(102, 252, 241, 0.3);
}*/
.logo-img {
    height: 50px; /* Altura controlada para mantener proporción */
    width: auto;  /* El ancho se ajusta automáticamente */
    display: block;
    margin: 0 auto;
    padding: 0;
}
 .bar {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
        }

.nav ul {
    list-style: none;
    display: flex;
    gap: 15px;
}

.nav a {
    color: #c5c6c7;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease, border-bottom 0.3s ease;
    padding-bottom: 5px;
}

.nav a:hover, .nav li.active a {
    color: #66fcf1;
    border-bottom: 2px solid #66fcf1;
}
.menu-toggle {
  display: none;
}
.nav-mobile {
  display: none;
}
/* Sección Hero (Home) */
.hero {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(11, 12, 16, 0.8), rgba(11, 12, 16, 0.9)), url('https://images.unsplash.com/photo-1506318137071-a8e063b4bec0?auto=format&fit=crop&w=1200&q=80') no-repeat center center/cover;
    background-image: url("\imagenes/fondos/home.png");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
}

.hero h1 {
    font-size: 48px;
    letter-spacing: 4px;
    color: #fff;
    margin-bottom: 15px;
    text-shadow: 0 0 10px rgba(102, 252, 241, 0.5);
}

.hero p {
    font-size: 24px;
    color: #c5c6c7;
    margin-bottom: 30px;
}

/* Botones */
.boton {
    background-color: #66fcf1;
    color: #0b0c10;
    border: none;
    padding: 12px 30px;
    font-size: 15px;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s, box-shadow 0.3s;
}

.boton:hover {
    background-color: #45a29e;
    box-shadow: 0 0 15px rgba(102, 252, 241, 0.4);
    transform: translateY(-2px);
}

/* Secciones de Contenido Comunes */
.fondo-a {
	background-image: url("\imagenes/fondos/avistamientos.png");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
    }
.fondo-d {
	background-image: url("\imagenes/fondos/documentos.png");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
    }
.fondo-c {
	background-image: url("\imagenes/fondos/ciencia.png");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
    }
.fondo-t {
	background-image: url("\imagenes/fondos/teorias.png");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
    }
.fondo-i {
	background-image: url("\imagenes/fondos/investigacion.png");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
    }
.fondo-s {
	background-image: url("\imagenes/fondos/archivo.png");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
    }
.fondo-ct {
	background-image: url("\imagenes/fondos/conclusiones.png");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
    }
section {
    padding: 60px 5%;
    border-bottom: 1px solid #1f2833;
}

.pagina-titulo {
    text-align: center;
    margin-bottom: 40px;
}

.pagina-titulo h1 {
    font-size: 32px;
    color: #66fcf1;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.pagina-titulo p {
    color: #45a29e;
    font-size: 20px;
}

.center-text {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    font-size: 20px;
    line-height: 1.8;
}

/* Grid layout general */
.grid-3, .grid-4 {
    display: grid;
    gap: 30px;
    margin-top: 30px;
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

/* Tarjetas (Cards) */
.card {
	background: #111;
	border: 1px solid #333;
	padding: 20px;
	transition: border-color .3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(102, 252, 241, 0.2);
}

.img-placeholder {
  background: #222;
  height: 150px;
  margin-bottom: 15px;
}
.img-placeholder1 {
    background-image: url("\imagenes/hipo.jpg");
    background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    height: 150px;
    margin-bottom: 15px;
    
    
}
.img-placeholder2 {
	background-image: url("\imagenes/atmosfera.jpg");
    background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    height: 150px;
    margin-bottom: 15px;
    
 
}
.img-placeholder3 {
	background-image: url("\imagenes/pentagono.jpg");
    background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    height: 150px;
    margin-bottom: 15px;
    
 
}
.img-placeholder4 {
	background-image: url("\imagenes/parke.jpg");
    background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    height: 150px;
    margin-bottom: 15px;
}
.img-placeholder5 {
	background-image: url("\imagenes/luz.jpg");
    background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    height: 150px;
    margin-bottom: 15px;
}
.img-placeholder6 {
	background-image: url("\imagenes/extra.jpg");
    background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    height: 150px;
    margin-bottom: 15px;
    }
    .img-placeholder7 {
	background-image: url("\imagenes/nave.jpg");
    background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    height: 150px;
    margin-bottom: 15px;
    }
    .img-placeholder8 {
	background-image: url("\imagenes/mediciones.jpg");
    background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    height: 150px;
    margin-bottom: 15px;
   }
      .img-placeholder9 {
	background-image: url("\imagenes/exoplaneta.jpg");
    background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    height: 150px;
    margin-bottom: 15px;
   }
     .img-placeholder10 {
	background-image: url("\imagenes/astro.jpg");
    background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    height: 150px;
    margin-bottom: 15px;
   }
.card h3 {
    color: #fff;
    margin-bottom: 10px;
    font-size: 18px;
}

.card p {
    font-size: 14px;
    color: #c5c6c7;
    margin-bottom: 20px;
    flex-grow: 1;
}

/* Casos destacados */
.caso-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.caso-card {
    background-color: #1f2833;
    border: 1px solid #66fcf1;
    padding: 30px;
    text-align: center;
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
}

.caso-card:hover {
    background-color: #66fcf1;
    color: #0b0c10;
}

/* Newsletter */
.newsletter {
    background-color: #1f2833;
    padding: 50px 5%;
}

.newsletter input {
    padding: 12px 20px;
    font-size: 16px;
    width: 100%;
    max-width: 350px;
    border: 1px solid #45a29e;
    border-radius: 4px 0 0 4px;
    background-color: #0b0c10;
    color: #fff;
    outline: none;
    margin-bottom: 10px;
}

.newsletter .boton {
    border-radius: 0 4px 4px 0;
}

@media(max-width: 600px) {
    .newsletter input {
        border-radius: 4px;
        margin-right: 0;
    }
    .newsletter .boton {
        border-radius: 4px;
        width: 100%;
    }
}

/* Filtros (Avistamientos) */
.filters {
    background-color: #1f2833;
    padding: 20px;
    border-radius: 6px;
    border: 1px solid #45a29e;
    margin-bottom: 40px;
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.filter-grid select {
    background-color: #0b0c10;
    color: #fff;
    border: 1px solid #45a29e;
    padding: 10px;
    border-radius: 4px;
    outline: none;
}

/* Listado de Casos */
.casos-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.caso-row {
    background-color: #1f2833;
    border: 1px solid #45a29e;
    border-radius: 6px;
    display: flex;
    overflow: hidden;
}

.caso-img {
	width: 200px;
    background-image: url("\imagenes/Roswell.jpg");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
}
.caso-img2 {
   width: 200px;
    background-image: url("\imagenes/PhoenixLights.jpg");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
}
.caso-img3 {
    width: 200px;
    background-image: url("\imagenes/Avistamiento.jpg");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
}
.caso-info {
    padding: 20px;
    flex-grow: 1;
}

.caso-info h3 {
    color: #fff;
    margin-bottom: 10px;
}

.caso-info p {
    font-size: 14px;
    color: #c5c6c7;
    margin-bottom: 15px;
}

@media(max-width: 768px) {
    .caso-row {
        flex-direction: column;
    }
    .caso-img {
        width: 100%;
        height: 150px;
    }
}

/* Tarjetas de Documentos */
.doc-card {
    background-color: #1f2833;
    border-left: 5px solid #66fcf1;
    border-top: 1px solid #45a29e;
    border-right: 1px solid #45a29e;
    border-bottom: 1px solid #45a29e;
    border-radius: 4px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.doc-icon {
    font-size: 40px;
    color: #66fcf1;
}

.doc-card h3 {
    color: #fff;
    margin-bottom: 5px;
}

.doc-card p {
    font-size: 14px;
    color: #c5c6c7;
    margin-bottom: 15px;
}

/* Seccion Sobre el Proyecto */
.about-container {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.about-photo1 {
	width: 300px;
    height: 400px;
    background-image: url("\imagenes/extraterrestre.jpg");
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
    padding: 40px 20px;
}
.about-photo {
    width: 300px;
    height: 400px;
    background-color: #1f2833;
    border: 1px solid #45a29e;
    border-radius: 6px;
    flex-shrink: 0;
}

.about-text h2 {
    color: #66fcf1;
    margin-bottom: 15px;
    margin-top: 30px;
}

.about-text h2:first-of-type {
    margin-top: 0;
}

.about-text p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-list {
    list-style-type: square;
    padding-left: 20px;
    margin-bottom: 20px;
}

.about-list li {
    margin-bottom: 8px;
}

@media(max-width: 900px) {
    .about-container {
        flex-direction: column;
        align-items: center;
    }
    .about-photo {
        width: 100%;
        max-width: 350px;
        height: 250px;
    }
}

/* Formulario de Contacto */
.contact-container {
    display: flex;
    gap: 40px;
}

.contact-info {
    flex: 1;
}

.contact-info h2 {
    color: #fff;
    margin-bottom: 20px;
}

.contact-form {
    flex: 1.5;
    background-color: #1f2833;
    padding: 30px;
    border-radius: 6px;
    border: 1px solid #45a29e;
}

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #66fcf1;
}

.contact-input, .contact-textarea {
    width: 100%;
    padding: 12px;
    background-color: #0b0c10;
    border: 1px solid #45a29e;
    color: #fff;
    border-radius: 4px;
    margin-bottom: 20px;
    font-family: inherit;
    font-size: 15px;
    outline: none;
}

.contact-input:focus, .contact-textarea:focus {
    border-color: #66fcf1;
}

.contact-textarea {
    resize: vertical;
    height: 120px;
}

@media(max-width: 768px) {
    .contact-container {
        flex-direction: column;
    }
}



/* MENÚ RESPONSIVE */
@media (max-width: 768px) {
/* ============================
   MENÚ HAMBURGUESA SIN JS
   ============================ */

.menu-toggle {
  display: none;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 22px;
  cursor: pointer;
  z-index: 1001;
}

.hamburger span {
  height: 4px;
  background: #fff;
  border-radius: 4px;
  transition: 0.3s;
}

.nav-mobile {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  width: 70%;
  height: 100vh;
  background: #0b0c10;
  padding-top: 80px;
  z-index: 1000;
}

.nav-mobile ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 25px;
  padding-left: 30px;
}

.nav-mobile a {
  color: #c5c6c7;
  font-size: 1.4rem;
  text-decoration: none;
}

.nav-mobile a:hover {
  color: #66fcf1;
}
.nav ul {
    display: none;
  }

  .hamburger {
    display: flex;
    position: absolute;
    right: 20px;
    top: 20px;
  }

  .menu-toggle:checked ~ .nav-mobile {
    display: block;
  }

  .menu-toggle:checked + .hamburger span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }
  .menu-toggle:checked + .hamburger span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle:checked + .hamburger span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }

/* Cierre automático del menú al pulsar un enlace */
.nav-mobile a {
  display: block;
}

.nav-mobile a:active {
  opacity: 0.7;
}

/* Truco CSS para cerrar el menú sin JS */
.nav-mobile a {
  cursor: pointer;
}

.nav-mobile a:focus {
  outline: none;
}

/* Cuando se hace clic en un enlace, el checkbox se desmarca */
.nav-mobile a:active ~ #menu-toggle {
  display: none;
}
}
/* Footer */
.footer {
    background-color: #1f2833;
    color: #c5c6c7;
    text-align: center;
    padding: 20px;
    font-size: 14px;
    border-top: 1px solid #45a29e;
    margin-top: auto;
}