/* --- VARIABLES DE DISEÑO --- */
:root {
    --azul-maestro: #1A4C8B;   
    --azul-presencia: #2F6FA3; 
    --azul-tecnico: #0F3A63;   
    --azul-glow: rgba(26, 76, 139, 0.4);

    --negro: #000000;
    --negro-suave: #111111;
    --blanco: #ffffff;
    --gris-texto: #888888;
    --fuente-texto: 'Lato', sans-serif;
}

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

body.interna-body {
    background: radial-gradient(circle at top right, #00081a, #000000);
    background-attachment: fixed;
    color: var(--blanco);
    font-family: var(--fuente-texto);
    line-height: 1.8;
}

/* --- HEADER Y NAVEGACIÓN --- */
.header-interna {
    position: sticky; 
    top: 0; 
    z-index: 1000;
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    padding: 40px 5%; 
    background: rgba(0,0,0,0.95);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.brand a { 
    text-decoration: none; 
    color: var(--blanco); 
    font-family: var(--fuente-texto); 
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    font-weight: 300; 
    letter-spacing: 4px; 
    text-transform: uppercase;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

/* --- NAVEGACIÓN Y DROPDOWN (IGUAL AL INDEX) --- */
.nav-principal { 
    display: flex; 
    align-items: center; 
    gap: 18px; /* Espacio uniforme entre botones */
}

.nav-item.dropdown {
    position: relative;
    display: flex;
    align-items: center;
    padding: 0;
    margin: 0;
}

.nav-principal a {
    font-family: var(--fuente-texto);
    color: var(--blanco); 
    text-decoration: none; 
    font-size: 0.75rem;
    text-transform: uppercase; 
    letter-spacing: 1px; 
    transition: all 0.3s ease;
}

.nav-principal a:hover, 
.nav-principal a.active {
    color: var(--azul-maestro) !important;
}

.dropdown-arrow {
    font-size: 0.6rem;
    color: var(--azul-maestro);
    margin-left: 4px; /* Pegado al texto para evitar huecos */
    cursor: pointer;
    transition: transform 0.3s ease;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--negro);
    border: 1px solid rgba(255, 255, 255, 0.1);
    min-width: 240px;
    padding: 10px 0;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.8);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    text-align: left;
    font-size: 0.7rem !important;
}

.dropdown-menu a:hover {
    background: rgba(26, 76, 139, 0.15);
    color: var(--azul-maestro) !important;
}

/* Efectos Hover Escritorio */
@media (min-width: 901px) {
    .nav-item.dropdown:hover .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(5px);
    }
    .nav-item.dropdown:hover .dropdown-arrow {
        transform: rotate(180deg);
    }
}

/* --- REPRODUCTOR DE AUDIO --- */
.audio-player {
    display: flex; 
    align-items: center; 
    gap: 15px;
    background: rgba(255,255,255,0.05); 
    padding: 8px 20px;
    border-radius: 50px; 
    border: 1px solid rgba(26, 76, 139, 0.3);
}

#play-pause { 
    background: none; 
    border: none; 
    color: var(--azul-maestro); 
    cursor: pointer; 
    font-size: 1rem;
}

.track-info { display: flex; flex-direction: column; }

.track-name { 
    font-size: 0.55rem; 
    color: var(--gris-texto); 
    white-space: nowrap; 
    overflow: hidden; 
    max-width: 150px; 
    text-overflow: ellipsis; 
}

.progress-container { 
    width: 60px; 
    height: 2px; 
    background: #222; 
    position: relative; 
    margin-top: 4px; 
}

.progress-bar { 
    height: 100%; 
    background: var(--azul-maestro); 
    width: 0%; 
    transition: 0.3s; 
}

/* --- BOTÓN DE IDIOMA --- */
.lang-btn {
    background: transparent;
    border: 1px solid var(--azul-maestro);
    color: var(--blanco);
    padding: 4px 10px;
    cursor: pointer;
    font-family: var(--fuente-texto);
    font-size: 0.7rem;
    font-weight: bold;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    margin-left: 10px;
}

/* Reemplaza tu actual .lang-btn:hover por esto: */
@media (hover: hover) and (pointer: fine) {
    .lang-btn:hover {
        background: var(--azul-maestro);
        color: #fff;
        box-shadow: 0 0 15px var(--azul-maestro);
    }
}

/* Para que en el móvil haga un "destello" rápido al tocarlo pero se apague al soltar: */
.lang-btn:active {
    background: var(--azul-maestro);
    color: #fff;
}

/* --- CONTENIDO BIOGRAFÍA --- */
.container-bio { padding: 80px 5% 120px 5%; max-width: 1400px; margin: 0 auto; }
.bio-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }

.bio-image-side { position: sticky; top: 130px; }
.img-frame { 
    width: 100%; border: 1px solid rgba(255,255,255,0.1); 
    background: var(--negro-suave); overflow: hidden;
}

.img-frame img { 
    width: 100%; height: auto; display: block; 
    filter: grayscale(100%); 
    transition: filter 0.6s ease, transform 0.6s ease; 
}

.img-frame:hover img { 
    filter: grayscale(0%); 
    transform: scale(1.03); 
}

.bio-quote { 
    margin-top: 30px; 
    border-left: 3px solid var(--azul-presencia); 
    padding-left: 20px; 
    font-style: italic; 
    color: var(--gris-texto); 
}

.titulo-servicio {
    font-family: var(--fuente-texto); 
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 300; 
    letter-spacing: 6px; 
    text-transform: uppercase;
    color: var(--azul-maestro); 
    margin-bottom: 15px; 
    text-shadow: 0 0 15px rgba(0, 191, 255, 0.3);
}

.bio-block { margin-bottom: 50px; }
.bio-block p { color: #ddd; font-weight: 300; font-size: 1.1rem; text-align: justify; }

.btn-pdf {
    display: inline-block;
    padding: 12px 25px;
    border: 1px solid var(--azul-maestro);
    color: var(--azul-maestro);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.4s ease;
    background: transparent;
}

/* --- ESTADO BASE (Móvil) --- */
.bio-action {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 30px;
    /* Centrado en móvil */
    justify-content: center; 
}

/* --- AJUSTE PARA PC (Pantallas grandes) --- */
@media (min-width: 901px) {
    .bio-action {
        /* Vuelve a la izquierda en PC */
        justify-content: flex-start;
        /* El gap que te gustaba para PC */
        gap: 15px; 
        margin-top: 20px;
    }
}

/* --- ESTILO DE LOS BOTONES --- */
.btn-pdf {
    min-width: 180px;
    text-align: center;
    display: inline-block;
    padding: 12px 25px;
    border: 1px solid var(--azul-maestro);
    color: var(--azul-maestro);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.4s ease;
    background: transparent;
}

.btn-pdf:hover {
    background: var(--azul-maestro);
    color: var(--blanco);
    box-shadow: 0 0 20px var(--azul-glow);
    transform: translateY(-3px);
}

/* --- FOOTER --- */
.home-footer { 
    position: fixed; bottom: 20px; left: 5%; z-index: 100; pointer-events: none;
}
.home-footer p { font-size: 0.7rem; color: var(--gris-texto); text-transform: uppercase; letter-spacing: 2px; opacity: 0.6; }

/* --- RESPONSIVE UNIFICADO --- */
@media (max-width: 900px) {
    .header-interna { 
        flex-direction: column; 
        padding: 30px 5%; 
        gap: 20px; 
    }
    
    .nav-principal { 
        justify-content: center; 
        flex-wrap: wrap; 
        width: 100%; 
        gap: 15px; 
    }

    /* Lógica de menú activo para móvil (Script) */
    .dropdown-menu.active {
        display: block !important;
        opacity: 1 !important;
        visibility: visible !important;
        transform: translateX(-50%) translateY(0) !important;
        position: absolute;
        top: 35px;
    }

    .dropdown-arrow.active {
        transform: rotate(180deg);
    }
    
    .bio-wrapper { grid-template-columns: 1fr; }
    .bio-image-side { position: relative; top: 0; margin-bottom: 40px; }
    
    .home-footer { 
        position: relative; 
        text-align: center; 
        pointer-events: auto; 
        bottom: 20px; 
        left: 0; 
        width: 100%; 
        padding: 20px 0; 
    }
}