:root {
    /* PALETA NEON & CIAN */
    --primary-bg: #0B0F19;
    --glass-bg: rgba(17, 24, 39, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);

    --primary-text: #EAEAEA;
    --secondary-text: #8892B0;

    /* ACENTO NEON */
    --accent-color: #D32F2F; /* Rojo Oscuro (Principal) */
    --accent-hover-color: #FF5252; /* Rojo Claro (Contorno/Hover) */
    --accent-hover-glow: rgba(255, 82, 82, 0.15); /* Resplandor Rojo */

    --font-family: 'Poppins', sans-serif;
    --border-radius: 20px;
    --transition-speed: 0.3s;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    background-color: var(--primary-bg);
    color: var(--primary-text);
    min-height: 100vh;
    overflow-y: auto;
    
    /* Variables y estado inicial para la transición de página */
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

body.page-loaded {
    opacity: 1;
    transform: translateY(0);
}

body.page-exiting {
    opacity: 0;
    transform: translateY(-10px);
}

#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-color: var(--primary-bg);
}

/* --- Barra de Navegación Superior --- */
.top-nav {
    position: fixed;
    top: 1.5rem;
    left: 1.5rem;
    z-index: 100;
}

.back-button {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    text-decoration: none;
    font-weight: 500;
    color: var(--primary-text);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    transition: all var(--transition-speed) ease;
}

.back-button:hover {
    border-color: var(--accent-hover-color);
    color: var(--accent-hover-color);
    transform: translateY(-3px);
}

/* --- Contenedor Principal --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem 2rem;
    position: relative;
    z-index: 1;
}

/* --- Panel de Cristal --- */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
    padding: 2.5rem;
}

.card::before {
    content: '';
    position: absolute;
    top: var(--mouse-y, 0);
    left: var(--mouse-x, 0);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle closest-side, var(--accent-hover-glow), transparent);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
    pointer-events: none;
    z-index: 0;
}

.card:hover::before {
    opacity: 1;
}

.card > * {
    position: relative;
    z-index: 1;
}

.card h2 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 1.6rem;
    color: var(--accent-color);
}

/* --- BENTO GRID LAYOUT --- */
.bento-about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: auto auto auto;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

/* Celda 1: Bio (Abarca 2 columnas arriba, o 1 columna ancha) */
.header-bio-card {
    grid-column: 1 / 3;
    grid-row: 1 / 2;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

@media (min-width: 900px) {
    .header-bio-card {
        flex-direction: row;
        align-items: flex-start;
    }
    
    .header-content {
        flex: 1;
        min-width: 300px;
        border-right: 1px solid var(--glass-border);
        padding-right: 2rem;
    }

    .bio-text {
        flex: 2;
        padding-left: 1rem;
    }
}

.header-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.profile-img {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    border: 3px solid var(--glass-border);
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 25px rgba(0,0,0,0.5);
    transition: transform var(--transition-speed) ease;
}

.profile-img:hover {
    transform: scale(1.05) rotate(5deg);
    border-color: var(--accent-color);
}

.header-titles h1 {
    margin: 0 0 0.5rem 0;
    font-size: 2.5rem;
    font-weight: 700;
}

.header-titles .subtitle {
    margin: 0;
    color: var(--secondary-text);
    font-size: 1.1rem;
    font-weight: 500;
}

.bio-text h2 {
    text-align: left;
    margin-bottom: 1rem;
}

.bio-text p {
    color: var(--secondary-text);
    line-height: 1.7;
    font-size: 1.05rem;
    margin-top: 0;
    margin-bottom: 1rem;
}

/* Celda 2: Skills (Izquierda Medio) */
.skills-card {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 1rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.25rem 0.5rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    text-align: center;
    font-weight: 500;
    transition: all var(--transition-speed) ease;
    cursor: default;
}

.skill-item:hover {
    background: rgba(211, 47, 47, 0.1);
    border-color: var(--accent-hover-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.skill-item i {
    font-size: 2rem;
    color: var(--accent-color);
    transition: color var(--transition-speed) ease;
}

.skill-item:hover i {
    color: var(--accent-hover-color);
}

.skill-item span {
    font-size: 0.85rem;
    color: var(--primary-text);
}

/* Celda 3: Experiencia (Izquierda Abajo) */
.experience-card {
    grid-column: 1 / 2;
    grid-row: 3 / 4;
}

.experience-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.experience-list-item {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    transition: transform var(--transition-speed) ease;
}

.experience-list-item:hover {
    background: rgba(0, 0, 0, 0.25);
    transform: translateX(5px);
    border-color: rgba(255, 255, 255, 0.15);
}

.exp-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background: rgba(211, 47, 47, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 1px solid rgba(211, 47, 47, 0.2);
}

.exp-icon i {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.exp-details {
    display: flex;
    flex-direction: column;
}

.exp-details h3 {
    margin: 0 0 0.25rem 0;
    font-size: 1.15rem;
    color: var(--primary-text);
}

.exp-details .position {
    margin: 0 0 0.5rem 0;
    font-weight: 500;
    color: var(--accent-color);
    font-size: 0.9rem;
}

.exp-details .description {
    margin: 0;
    font-size: 0.9rem;
    color: var(--secondary-text);
    line-height: 1.5;
}


/* Celda 4: Servicios (Derecha, Abarca Medio y Abajo) */
.services-card {
    grid-column: 2 / 3;
    grid-row: 2 / 4;
}

.services-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.service-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    transition: all var(--transition-speed) ease;
}

.service-item:hover {
    background: rgba(0, 0, 0, 0.25);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
}

.service-icon {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(211, 47, 47, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon i {
    font-size: 1.25rem;
    color: var(--accent-color);
}

.service-info h5 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    color: var(--primary-text);
}

.service-info p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--secondary-text);
    line-height: 1.5;
}


/* --- Footer --- */
.main-footer {
    text-align: center;
    color: var(--secondary-text);
    font-size: 0.9rem;
    padding: 1.5rem;
    margin-top: 0;
}


/* --- Responsive Layout --- */
@media (max-width: 900px) {
    .bento-about-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .header-bio-card, .skills-card, .experience-card, .services-card {
        grid-column: 1 / 2;
        grid-row: auto;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 5rem 1rem 2rem;
    }

    .top-nav {
        top: 1rem;
        left: 1rem;
    }

    .header-bio-card {
        padding: 2rem 1.5rem;
    }
    
    .bio-text h2 {
        text-align: center;
    }
}