html {
    scroll-behavior: smooth;
    scroll-padding-top: 30px;
}


:root {
    --primary: #1a365d;
    --secondary: #3182ce;
    --text: #2d3748;
    --light-bg: #f8fafc;
    --white: #ffffff;
}

body.dark-mode {
    --primary: #90cdf4;
    --secondary: #63b3ed;
    --text: #e2e8f0;
    --light-bg: #1a202c;
    --white: #0f172a;
}


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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    line-height: 1.7;
    scroll-behavior: smooth;
}

body {
    background-color: var(--white);
    transition: background-color 0.3s ease, color 0.3s ease;
}

section {
    background-color: transparent;
}






.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Navigate */

nav {
    /* Reemplazamos el color sólido por la imagen */
    background-image: linear-gradient(rgba(26, 54, 93, 0.7), rgba(26, 54, 93, 0.7)), url('neurona-encabezado.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    /* Añadimos una sombra sutil para separar la nav del contenido */
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}




.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 40px;
}

.logo { color: white; font-weight: 700; text-decoration: none; }

nav ul { display: flex; list-style: none; }





/* Estilo base para los enlaces del menú */
nav ul li a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    position: relative; /* Necesario para posicionar la línea respecto al texto */
    padding-bottom: 4px; /* Espacio para que la línea no toque las letras */
    transition: color 0.3s ease;
}

/* Creamos la línea con un pseudo-elemento ::after */
nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;           
    height: 2px;        
    bottom: 0;
    left: 50%;          
    background-color: #90cdf4; /* El color azul claro */
    transition: all 0.3s ease-in-out;
    transform: translateX(-50%); /* Ajuste para que crezca desde el centro perfecto */
}

/* Efecto al pasar el cursor (Hover) */
nav ul li a:hover {
    color: #90cdf4;
}

nav ul li a:hover::after {
    width: 100%; /* La línea se expande */
}



/* Efecto al pasar el cursor */
nav ul li a:hover {
    color: #90cdf4; /* azul claro sobre el fondo oscuro */
    transition: color 0.3s ease; /* cambio de color suave */
}



/* Header */
header { 
    padding: 110px 0 60px 0; 
}

.profile-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.profile-info h1 {
    font-size: 2.8rem;
    color: var(--primary);
    margin-bottom: 25px; 
    line-height: 1.1;
}

/* Profile picture */
.profile-image img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border: 5px solid #e2e8f0; 
    margin-top: 25px; 
}

/* Social media */
.social-links { margin-bottom: 20px; }

.social-links a {
    font-size: 1.6rem;
    color: var(--primary);
    margin-right: 18px;
    transition: color 0.3s;
}

.social-links a:hover { color: var(--secondary); }

.cv-link { font-size: 1rem; color: #4a5568; }

.cv-link a {
    color: var(--secondary);
    font-weight: 600;
    text-decoration: none;
}

.cv-link a:hover {text-decoration: underline;
}


/* Secctions */
section { padding: 60px 0; border-top: 1px solid #edf2f7; }

.section-title {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Interests */
.interest-card {
    background: var(--light-bg);
    padding: 30px;
    border-radius: 12px;
    border-left: 4px solid var(--secondary);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.interest-card {
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.interest-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(0,0,0,0.08);
}




.interest-card i { font-size: 2rem; color: var(--secondary); margin-bottom: 15px; display: block;}

.link-lab {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 600;
    transition: text-decoration 0.3s ease;
}

.link-lab:hover {text-decoration: underline;
}


/* Keywords */
.keywords-area {
    margin-top: 25px;
    padding-top: 15px;
    border-top: 1px solid #cbd5e0; /* Línea recta sólida */
    font-size: 0.95rem;
    text-align: left; /* Texto centrado */
}

/* Education */
.timeline-item {
    margin-bottom: 30px;
    padding-left: 20px;
    border-left: 3px solid var(--secondary);
}

.date { font-weight: 700; color: var(--secondary); font-size: 0.9rem; }

.link-uib { color: #0065BD !important; text-decoration: none !important; }
.link-uib:hover {text-decoration: underline !important; }


.link-uam { color: #4a7729 !important; text-decoration: none !important; }
.link-uam:hover {text-decoration: underline !important; }


.thesis { margin-top: 8px; font-size: 0.95rem; color: #4a5568; line-height: 1.4; }

/* Publications */
.pub-list { padding-left: 20px; }

.pub-list li { margin-bottom: 25px; padding-left: 10px; }

.paper-btn { 
    color: var(--secondary); 
    text-decoration: none; 
    font-size: 0.75rem; 
    font-weight: 700;
    border: 1.5px solid var(--secondary); 
    padding: 2px 8px; 
    border-radius: 4px; 
    margin-left: 8px;
    text-transform: uppercase;
    transition: all 0.3s;
}

.paper-btn:hover { background: var(--secondary); color: white; }

/* Dissemination */
.dissemination-grid { display: flex; flex-direction: column; gap: 12px; }

.diss-card { border: 1px solid #e2e8f0; padding: 14px; border-radius: 10px; transition: border 0.3s; }

.diss-card:hover { border-color: var(--secondary); }

.type-tag { font-size: 0.65rem; font-weight: 800; text-transform: uppercase; padding: 3px 10px; border-radius: 20px; margin-bottom: 12px; display: inline-block; }

.type-tag.oral { background: #ebf8ff; color: #2b6cb0; }
.type-tag.poster { background: #fff5f7; color: #97266d; }

footer { text-align: center; padding: 60px 0; color: #a0aec0; font-size: 0.85rem; }


footer a {
    color: inherit;         
    text-decoration: none;  
    transition: color 0.3s ease;
}

footer a:hover {
    text-decoration: underline; /* El subrayado aparece al pasar el ratón */
    color: var(--secondary);    
}





/* --- RESPONSIVE DESIGN --- */

/* Ocultar el botón de menú en escritorio */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    /* Ajustes de Navegación */
    .menu-toggle {
        display: block; /* Aparece en móviles */
        order: 2;
    }

    #theme-toggle {
        order: 3;
        margin-left: 10px;
    }

    .logo {
        order: 1;
        font-size: 1rem;
    }

    nav ul {
        display: none; /* Escondido por defecto */
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 100%;
        left: 0;
        background: rgba(26, 54, 93, 0.95); /* Fondo sólido para legibilidad */
        backdrop-filter: blur(10px);
        padding: 20px 0;
        text-align: center;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    nav ul.active {
        display: flex; /* Se muestra al hacer clic */
    }

    nav ul li {
        margin: 15px 0;
    }

    nav ul li a {
        margin-left: 0;
        font-size: 1.1rem;
    }

    /* Ajustes de Header y Perfil */
    .profile-wrapper {
        flex-direction: column-reverse;
        text-align: center;
        gap: 20px;
    }

    .profile-info h1 {
        font-size: 2.2rem; /* Texto más pequeño en móvil */
    }

    .profile-image img {
        width: 160px;
        height: 160px;
        margin-top: 30px;
    }

    .social-links {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 10px;
    }

    /* Contenedores y Secciones */
    .container {
        padding: 0 20px;
    }

    section {
        padding: 40px 0;
    }

    .section-title {
        font-size: 1.2rem;
    }

    /* Timeline de educación */
    .timeline-item {
        padding-left: 15px;
    }
}



.osf-icon {
    width: 36px;
    height: 36px;
    vertical-align: middle;
    position: relative;
    top: -2px;
    left: -2px;
    transition: filter 0.3s ease, opacity 0.3s ease;
}

.osf-link:hover .osf-icon {
    opacity: 1;
    filter: brightness(0) saturate(100%)
            invert(46%) sepia(83%) saturate(746%)
            hue-rotate(178deg) brightness(95%) contrast(92%);
}

.github-link {
    margin-left: -2px;
}

.bluesky-icon {
    width: 26px;
    height: 26px;
    vertical-align: middle;
    position: relative;
    top: -2px;
    left: +5px;
    transition: filter 0.3s ease, opacity 0.3s ease;
}

.bluesky-link:hover .bluesky-icon {
    opacity: 1;
    filter: brightness(0) saturate(100%)
            invert(46%) sepia(83%) saturate(746%)
            hue-rotate(178deg) brightness(95%) contrast(92%);
}


#theme-toggle {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    margin-left: 20px;
    transition: color 0.3s ease, transform 0.2s ease;
}

#theme-toggle:hover {
    color: #90cdf4;
    transform: scale(1.1);
}



body.dark-mode .interest-card,
body.dark-mode .diss-card {
    background-color: #2d3748;
    border-color: #4a5568;
}

body.dark-mode footer {
    color: #718096;
}

body.dark-mode nav {
    box-shadow: 0 2px 10px rgba(0,0,0,0.8);
}


body.dark-mode #theme-toggle {
    color: #f6e05e; /* amarillo suave para el sol */
}

body.dark-mode .profile-info h1 {
    color: #ffffff;
}


body.dark-mode .diss-card i.fa-link {
    color: #d6bcfa; /* lila claro */
    transition: color 0.3s ease;
}

body.dark-mode .diss-card a:hover i.fa-link {
    color: #e9d8fd; /* aún más claro al hover */
}

body.dark-mode .cv-link {
    color: #d6bcfa; /* mismo lila claro */
}

body.dark-mode .cv-link a {
    color: #e9d8fd;
}

body.dark-mode .social-links a {
    color: #ffffff;
}

body.dark-mode .social-links a:hover {
    color: var(--secondary);
}

/* Bluesky icon white in dark mode */
body.dark-mode .bluesky-icon {
    filter: brightness(0) invert(1);
    transition: filter 0.3s ease;
}

body.dark-mode .bluesky-link:hover .bluesky-icon {
    opacity: 0.75;
}