:root {
        --arn-navy: #003366;
        --arn-blue-light: #0072ce;
        --arn-cyan: #00a3e0;
        --arn-bg-slate: #f8fafc;
        --arn-text-dark: #1e293b;
        --arn-text-muted: #64748b;
        --arn-border-color: #e2e8f0;
    }

    .arn-profile-wrapper {
        font-family: 'Open Sans', sans-serif;
        color: var(--arn-text-dark);
        max-width: 1000px;
        margin: 0 auto;
        padding: 20px;
    }

    /* --- NAVEGACIÓN BREADCRUMB --- */
    .arn-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: var(--arn-text-muted);
        margin-bottom: 20px;
    }

    .arn-breadcrumb a {
        color: var(--arn-blue-light);
        text-decoration: none;
        transition: color 0.2s;
    }

    .arn-breadcrumb a:hover {
        text-decoration: underline;
    }

    /* --- HERO PORTADA EXECUTIVE --- */
    .arn-hero {
        display: grid;
        grid-template-columns: 320px 1fr;
        background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
        border-radius: 16px;
        border-left: 6px solid var(--arn-navy);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        overflow: hidden;
        margin-bottom: 35px;
    }

    .arn-hero-img-container {
        position: relative;
        height: 100%;
        min-height: 280px;
    }

    .arn-hero-img-container img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
    }

    .arn-hero-content {
        padding: 35px 40px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .arn-role-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background-color: rgba(0, 114, 206, 0.1);
        color: var(--arn-blue-light);
        font-weight: 700;
        font-size: 0.8rem;
        text-transform: uppercase;
        letter-spacing: 0.8px;
        padding: 6px 14px;
        border-radius: 20px;
        width: fit-content;
        margin-bottom: 12px;
    }

    .arn-hero-title {
        font-family: 'Montserrat', sans-serif;
        font-size: 2.1rem;
        font-weight: 800;
        color: var(--arn-navy);
        margin: 0 0 8px 0;
        line-height: 1.2;
    }

    .arn-hero-subtitle {
        margin: 0;
        color: var(--arn-text-muted);
        font-size: 1.05rem;
        font-weight: 500;
    }

    .arn-hero-contact {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        margin-top: 20px;
        padding-top: 15px;
        border-top: 1px solid var(--arn-border-color);
    }

    .arn-contact-link {
        display: flex;
        align-items: center;
        gap: 8px;
        color: var(--arn-text-muted);
        font-size: 0.9rem;
        text-decoration: none;
        transition: color 0.2s;
    }

    .arn-contact-link i {
        color: var(--arn-blue-light);
    }

    .arn-contact-link:hover {
        color: var(--arn-navy);
    }

    /* --- CONTENIDO PRINCIPAL (1 COLUMNA) --- */
    .arn-main-content {
        display: flex;
        flex-direction: column;
        gap: 35px;
    }

    .arn-section-header {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 18px;
    }

    .arn-icon-box {
        width: 38px;
        height: 38px;
        background-color: var(--arn-navy);
        color: #ffffff;
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.1rem;
    }

    .arn-section-title {
        font-family: 'Montserrat', sans-serif;
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--arn-navy);
        margin: 0;
    }

    .arn-text-p {
        font-size: 0.98rem;
        line-height: 1.7;
        color: #334155;
        margin-bottom: 16px;
    }

    .arn-text-p:last-child {
        margin-bottom: 0;
    }

    /* --- TIMELINE DE EXPERIENCIA --- */
    .arn-timeline {
        position: relative;
        padding-left: 20px;
        margin-top: 15px;
    }

    .arn-timeline::before {
        content: '';
        position: absolute;
        left: 0;
        top: 8px;
        bottom: 8px;
        width: 2px;
        background-color: var(--arn-border-color);
    }

    .arn-timeline-item {
        position: relative;
        margin-bottom: 22px;
    }

    .arn-timeline-item:last-child {
        margin-bottom: 0;
    }

    .arn-timeline-item::before {
        content: '';
        position: absolute;
        left: -25px;
        top: 6px;
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background-color: var(--arn-blue-light);
        box-shadow: 0 0 0 4px rgba(0, 114, 206, 0.2);
    }

    .arn-timeline-title {
        font-weight: 700;
        color: var(--arn-navy);
        font-size: 0.98rem;
    }

    .arn-timeline-desc {
        font-size: 0.92rem;
        color: var(--arn-text-muted);
        margin-top: 3px;
        line-height: 1.5;
    }

    /* --- RESPONSIVE --- */
    @media (max-width: 850px) {
        .arn-hero {
            grid-template-columns: 1fr;
        }

        .arn-hero-img-container {
            height: 250px;
        }

        .arn-hero-content {
            padding: 25px 20px;
        }
    }