/* =========================================
   BARRA DE PROGRESO DE LECTURA
========================================= */

.article-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--color-primary);
    width: 0%;
    z-index: 200;
    transition: width 0.1s linear;
}


/* =========================================
   HERO DEL ARTÍCULO
========================================= */

.article-hero {
    position: relative;
    height: 520px;
    overflow: hidden;
}

.article-hero__img {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}

.article-hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15,17,23,0.92) 0%, rgba(15,17,23,0.4) 60%, rgba(15,17,23,0.15) 100%);
}

.article-hero__content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 48px 48px 52px;
    max-width: 900px;
}

.article-hero__category {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--color-primary);
    color: var(--white);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 5px 12px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.article-hero__title {
    font-size: clamp(28px, 3.5vw, 46px);
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 20px;
    max-width: 780px;
}

.article-hero__meta {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* Autor */
.article-meta-author {
    display: flex;
    align-items: center;
    gap: 10px;
}

.article-meta-author__avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    color: var(--white);
    flex-shrink: 0;
    border: 2px solid rgba(255,255,255,0.3);
}

.article-meta-author__name {
    font-size: 13px;
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
}

.article-meta-author__role {
    font-size: 11px;
    color: rgba(255,255,255,0.6);
}

.article-meta-divider {
    width: 1px;
    height: 24px;
    background: rgba(255,255,255,0.2);
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: rgba(255,255,255,0.7);
}


/* =========================================
   LAYOUT PRINCIPAL
========================================= */

.article-layout {
    max-width: 780px;
    margin: 0 auto;
    padding: 56px 48px 80px;
}


/* =========================================
   CUERPO DEL ARTÍCULO
========================================= */

.article-body {
    min-width: 0;
    line-height: 1.7;
}

.article-intro {
    font-size: 19px;
    font-weight: 500;
    color: var(--color-text-dark);
    line-height: 1.65;
    margin-bottom: 36px;
    padding-bottom: 36px;
    border-bottom: 2px solid var(--color-border);
}

.article-body h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--color-text-dark);
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin: 48px 0 16px;
}

.article-body h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--color-text-dark);
    letter-spacing: -0.01em;
    margin: 32px 0 12px;
}

.article-body p {
    font-size: 16px;
    color: #374151;
    line-height: 1.8;
    margin-bottom: 20px;
}

.article-body ul,
.article-body ol {
    margin: 0 0 20px 0;
    padding-left: 0;
    list-style: none;
}

.article-body ul li,
.article-body ol li {
    font-size: 16px;
    color: #374151;
    line-height: 1.75;
    padding: 6px 0 6px 24px;
    position: relative;
    border-bottom: 1px solid var(--color-border);
}

.article-body ul li:last-child,
.article-body ol li:last-child {
    border-bottom: none;
}

.article-body ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 15px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--color-primary);
}

.article-body ol {
    counter-reset: item;
}

.article-body ol li::before {
    content: counter(item);
    counter-increment: item;
    position: absolute;
    left: 0;
    top: 6px;
    font-size: 12px;
    font-weight: 700;
    color: var(--color-primary);
}


/* =========================================
   PULL QUOTE
========================================= */

.pull-quote {
    border-left: 4px solid var(--color-primary);
    background: var(--color-primary-light, #EEF1FE);
    padding: 24px 28px;
    border-radius: 0 12px 12px 0;
    margin: 36px 0;
}

.pull-quote p {
    font-size: 19px;
    font-weight: 700;
    color: var(--color-text-dark);
    line-height: 1.5;
    letter-spacing: -0.01em;
    margin: 0 !important;
    font-style: italic;
}


/* =========================================
   CAJA DE DATOS
========================================= */

.data-box {
    background: var(--color-bg, #F8F9FB);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 28px 32px;
    margin: 36px 0;
}

.data-box__title {
    font-size: 12px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.data-item__value {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text-dark);
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 4px;
}

.data-item__label {
    font-size: 12px;
    color: var(--color-text-light, #6B7280);
    font-weight: 500;
    line-height: 1.4;
}


/* =========================================
   IMAGEN EN ARTÍCULO
========================================= */

.article-image {
    margin: 36px 0;
    border-radius: 14px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
}

.article-image__caption {
    font-size: 12px;
    color: var(--color-text-light, #9CA3AF);
    padding: 10px 0 0;
    text-align: center;
}


/* =========================================
   FOOTER DEL ARTÍCULO (TAGS + SHARE)
========================================= */

.article-footer {
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.article-footer__tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.article-tag {
    background: var(--color-bg, #F8F9FB);
    border: 1px solid var(--color-border);
    color: var(--color-text-light, #6B7280);
    font-size: 12px;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.15s;
}

.article-tag:hover {
    background: var(--color-primary-light, #EEF1FE);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.article-footer__share {
    display: flex;
    align-items: center;
    gap: 10px;
}

.article-share__label {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-light, #6B7280);
}

.article-share__btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1.5px solid var(--color-border);
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light, #6B7280);
    cursor: pointer;
    transition: all 0.15s;
}

.article-share__btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light, #EEF1FE);
}


/* =========================================
   ARTÍCULOS RELACIONADOS
========================================= */

.related-section {
    background: var(--color-bg, #F8F9FB);
    border-top: 1px solid var(--color-border);
    padding: 64px 48px;
}

.related-inner {
    max-width: 1140px;
    margin: 0 auto;
}

.related-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 32px;
}

.related-header__title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text-dark);
}

.related-header__link {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

.related-header__link:hover {
    text-decoration: underline;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.related-card {
    background: var(--white);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    display: block;
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}

.related-card__img {
    height: 170px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.related-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15,17,23,0.5) 0%, transparent 60%);
}

.related-card__cat {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--color-primary);
    color: var(--white);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 20px;
}

.related-card__body {
    padding: 20px;
}

.related-card__title {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-text-dark);
    letter-spacing: -0.01em;
    line-height: 1.4;
    margin-bottom: 8px;
}

.related-card__meta {
    font-size: 12px;
    color: var(--color-text-light, #9CA3AF);
    display: flex;
    align-items: center;
    gap: 8px;
}


/* =========================================
   BOTÓN VOLVER ARRIBA
========================================= */

.back-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    background: var(--color-text-dark, #0F1117);
    color: var(--white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s, transform 0.3s, background 0.2s;
    z-index: 50;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.back-top.visible {
    opacity: 1;
    transform: translateY(0);
}

.back-top:hover {
    background: var(--color-primary);
}


/* =========================================
   RESPONSIVE — TABLET
========================================= */

@media (max-width: 768px) {
    .article-hero {
        height: 380px;
    }

    .article-hero__content {
        padding: 32px 20px 36px;
    }

    .article-hero__title {
        font-size: clamp(22px, 6vw, 32px);
    }

    .article-hero__meta {
        gap: 12px;
    }

    .article-meta-divider {
        display: none;
    }

    .article-layout {
        padding: 32px 20px 60px;
    }

    .article-intro {
        font-size: 16px;
    }

    .article-body h2 {
        font-size: 21px;
        margin: 36px 0 12px;
    }

    .article-body h3 {
        font-size: 17px;
    }

    .data-grid {
        grid-template-columns: 1fr 1fr;
    }

    .article-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .related-section {
        padding: 48px 20px;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }

    .back-top {
        bottom: 20px;
        right: 20px;
    }
}


/* =========================================
   RESPONSIVE — MÓVIL
========================================= */

@media (max-width: 480px) {
    .article-hero {
        height: 320px;
    }

    .data-grid {
        grid-template-columns: 1fr;
    }

    .data-item__value {
        font-size: 22px;
    }

    .article-image img {
        height: 200px;
    }
}