/* ==============================
   🌌 ESTILOS GENERALES
================================ */

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

body.bg-dark {
    background-color: #000;
    color: #ddd;
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
}

/* ==============================
   🎨 COLORES Y TEXTO
================================ */

:root {
    --oro: #d4af37;
}

.oro-texto {
    color: var(--oro);
}

.subtitulo-cientifico {
    font-size: 1.1rem;
    color: #aaa;
    margin-top: 10px;
}

/* ==============================
   🧭 NAVEGACIÓN
================================ */

.navigation {
    padding: 20px;
}

.btn-back {
    color: var(--oro);
    text-decoration: none;
    font-size: 0.9rem;
}

.btn-back:hover {
    text-decoration: underline;
}

/* ==============================
   🧠 HEADER CUÁNTICO
================================ */

.header-cuantica h1 {
    font-size: 2.5rem;
}

.header-cuantica p {
    max-width: 700px;
    margin: 0 auto;
}

/* ==============================
   📦 CONTENEDOR
================================ */

.container {
    max-width: 1000px;
    margin: auto;
    padding: 20px;
}

/* ==============================
   🎥 VIDEO
================================ */

.video-principal-box {
    margin-top: 90px;
}

.video-descripcion p {
    font-size: 0.95rem;
    color: #bbb;
}

/* ==============================
   🔮 GRID FRECUENCIAS
================================ */

.grid-frecuencias {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.card-frecuencia {
    background: #0e0e0e;
    border: 1px solid rgba(212, 175, 55, 0.25);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
}

.card-frecuencia h3 {
    color: var(--oro);
    margin: 15px 0 10px;
}

.card-frecuencia p {
    font-size: 0.9rem;
    color: #aaa;
}

.hz-circulo {
    font-size: 2.5rem;
}

/* ==============================
   🔘 BOTÓN FINAL
================================ */

.btn-stop {
    border: none;
    border-radius: 40px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-stop:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

/* ==============================
   🦶 FOOTER
================================ */

.footer-simple {
    margin-top: 80px;
    padding: 30px 20px;
    background: linear-gradient(180deg, #0b0b0b, #000);
    border-top: 1px solid rgba(212, 175, 55, 0.25);
    text-align: center;
    font-size: 0.85rem;
    color: #aaa;
}
/* ==============================
   🌐 NAVBAR PRINCIPAL
================================ */

.navbar{
    background:#0b0b0b;
    border-bottom:1px solid rgba(212,175,55,0.25);
    padding:15px 30px;
}

/* contenedor del menú */

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

/* links del menú */

.nav-links{
    display:flex;
    gap:25px;
    list-style:none;
}

.nav-links a{
    color:#ddd;
    text-decoration:none;
    font-size:0.9rem;
    transition:color 0.2s ease;
}

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

/* ==============================
   📂 DROPDOWN
================================ */

.dropdown{
    position:relative;
}

.dropdown-content{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    background:#0e0e0e;
    border:1px solid rgba(212,175,55,0.25);
    border-radius:8px;
    list-style:none;
    padding:10px 0;
    min-width:180px;
}

.dropdown-content li{
    padding:8px 15px;
}

.dropdown-content a{
    display:block;
    color:#ccc;
}

.dropdown-content a:hover{
    color:var(--oro);
}

/* mostrar dropdown */

.dropdown:hover .dropdown-content{
    display:block;
}

/* ==============================
   🌍 SELECTOR IDIOMA
================================ */

.nav-lang select{
    background:#111;
    color:#ddd;
    border:1px solid rgba(212,175,55,0.3);
    border-radius:6px;
    padding:5px 8px;
    font-size:0.8rem;
}
/* ==============================
   📚 RESUMEN KUSHI
================================ */
.resumen-kushi {
    background: #0e0e0e; /* fondo similar a tus cards */
    border: 1px solid rgba(212, 175, 55, 0.25);
    border-radius: 12px;
    padding: 25px;
    margin: 40px 0;
    color: #ddd;
    font-size: 0.95rem;
    line-height: 1.6;
}

.resumen-kushi h2 {
    color: var(--oro);
    margin-bottom: 15px;
    font-size: 1.4rem;
    text-align: center;
}

.resumen-kushi h3 {
    color: #d4af37;
    margin-top: 20px;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.resumen-kushi p {
    margin-bottom: 12px;
    color: #ccc;
}

.resumen-kushi ul {
    padding-left: 20px;
    margin-bottom: 12px;
}

.resumen-kushi ul li {
    margin-bottom: 8px;
}

/* Resaltar tiempos o referencias */
.resumen-kushi span.tiempo {
    color: var(--oro);
    font-weight: bold;
}