/* ========================================================================
   SYS Blog Pro - Single Article Stylesheet
   ======================================================================== */

/* ---- Single Hero ---- */
.sys-single-hero {
    background: linear-gradient(135deg, var(--sys-navy) 0%, #1a2744 50%, #0f2340 100%);
    padding: 80px 0 50px;
    position: relative;
    overflow: hidden;
}

.sys-single-hero::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -5%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(216,175,83,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.sys-single-container {
    max-width: var(--sys-container);
    margin: 0 auto;
    padding: 0 24px;
}

.sys-single-hero-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.sys-single-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.sys-single-title {
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    margin: 0 0 16px;
    letter-spacing: -0.02em;
}

.sys-single-intro {
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin: 0 0 24px;
}

.sys-single-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 14px;
    color: rgba(255,255,255,0.6);
}

.sys-single-author-mini {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sys-author-avatar-sm {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(255,255,255,0.2);
}

.sys-author-avatar-sm.sys-avatar-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
}

.sys-single-author-mini span {
    color: rgba(255,255,255,0.8);
    font-weight: 500;
}

.sys-meta-divider {
    color: rgba(255,255,255,0.2);
}

.sys-single-date,
.sys-single-reading {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.sys-single-date svg,
.sys-single-reading svg {
    opacity: 0.5;
}

/* ---- Featured Image ---- */
.sys-single-featured-image {
    margin-top: -30px;
    margin-bottom: 40px;
    position: relative;
    z-index: 2;
}

.sys-featured-figure {
    margin: 0;
    max-width: 960px;
}

.sys-featured-figure img {
    width: 100%;
    height: auto;
    border-radius: var(--sys-radius-lg);
    box-shadow: var(--sys-shadow-xl);
}

/* ---- Content Layout ---- */
.sys-single-content-wrapper {
    padding: 0 0 80px;
    background: var(--sys-bg-white);
}

.sys-single-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 48px;
    max-width: 1060px;
}

/* ---- Sidebar ---- */
.sys-single-sidebar {
    position: relative;
}

.sys-sidebar-inner {
    position: sticky;
    top: 100px;
}

/* Table of Contents */
.sys-toc-wrapper {
    background: var(--sys-bg-light);
    border: 1px solid var(--sys-border);
    border-radius: var(--sys-radius);
    padding: 20px;
    margin-bottom: 24px;
}

.sys-toc-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 700;
    color: var(--sys-text-dark);
    margin: 0 0 14px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sys-toc-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sys-toc-link {
    display: block;
    padding: 6px 12px;
    font-size: 13px;
    color: var(--sys-text-light);
    text-decoration: none;
    border-radius: 6px;
    border-left: 3px solid transparent;
    transition: all var(--sys-transition);
    line-height: 1.4;
}

.sys-toc-link:hover {
    color: var(--sys-blue);
    background: rgba(6,106,171,0.04);
}

.sys-toc-link.active {
    color: var(--sys-blue);
    border-left-color: var(--sys-blue);
    background: rgba(6,106,171,0.06);
    font-weight: 600;
}

.sys-toc-link[data-level="3"] {
    padding-left: 24px;
    font-size: 12px;
}

/* Share Buttons */
.sys-share-wrapper {
    margin-bottom: 24px;
}

.sys-share-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sys-text-light);
    margin: 0 0 12px;
}

.sys-share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sys-share-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--sys-radius-sm);
    border: 1px solid var(--sys-border);
    background: var(--sys-bg-white);
    color: var(--sys-text-body);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--sys-transition);
}

.sys-share-facebook:hover { background: #1877F2; color: #fff; border-color: #1877F2; }
.sys-share-twitter:hover { background: #1DA1F2; color: #fff; border-color: #1DA1F2; }
.sys-share-linkedin:hover { background: #0A66C2; color: #fff; border-color: #0A66C2; }
.sys-share-whatsapp:hover { background: #25D366; color: #fff; border-color: #25D366; }
.sys-share-copy:hover { background: var(--sys-navy); color: #fff; border-color: var(--sys-navy); }

.sys-share-copy.copied {
    background: #22c55e;
    color: #fff;
    border-color: #22c55e;
}

/* Reading Progress */
.sys-progress-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sys-progress-bar {
    flex: 1;
    height: 4px;
    background: var(--sys-border);
    border-radius: 2px;
    overflow: hidden;
}

.sys-progress-fill {
    height: 100%;
    background: var(--sys-gold-gradient);
    border-radius: 2px;
    width: 0%;
    transition: width 0.1s ease;
}

.sys-progress-text {
    font-size: 11px;
    font-weight: 700;
    color: var(--sys-text-muted);
    min-width: 32px;
    text-align: right;
}

/* ---- Article Content ---- */
.sys-single-content {
    max-width: 760px;
    min-width: 0;
}

.sys-highlight-box {
    display: flex;
    gap: 14px;
    padding: 20px 24px;
    background: linear-gradient(135deg, rgba(6,106,171,0.06) 0%, rgba(6,106,171,0.02) 100%);
    border: 1px solid rgba(6,106,171,0.15);
    border-left: 4px solid var(--sys-blue);
    border-radius: 0 var(--sys-radius) var(--sys-radius) 0;
    margin-bottom: 32px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--sys-text-body);
}

.sys-highlight-box svg {
    flex-shrink: 0;
    color: var(--sys-blue);
    margin-top: 2px;
}

/* Article Body Typography */
.sys-article-body {
    font-size: 16px;
    line-height: 1.85;
    color: var(--sys-text-body);
}

.sys-article-body h2 {
    font-size: 1.6em;
    font-weight: 700;
    color: var(--sys-text-dark);
    margin: 2.5em 0 0.8em;
    line-height: 1.3;
    scroll-margin-top: 100px;
}

.sys-article-body h3 {
    font-size: 1.3em;
    font-weight: 700;
    color: var(--sys-text-dark);
    margin: 2em 0 0.6em;
    line-height: 1.35;
    scroll-margin-top: 100px;
}

.sys-article-body h4 {
    font-size: 1.1em;
    font-weight: 700;
    color: var(--sys-text-dark);
    margin: 1.5em 0 0.5em;
}

.sys-article-body p {
    margin: 0 0 1.2em;
}

.sys-article-body a {
    color: var(--sys-blue);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--sys-transition);
}

.sys-article-body a:hover {
    color: var(--sys-gold);
}

.sys-article-body ul,
.sys-article-body ol {
    padding-left: 1.5em;
    margin: 0 0 1.5em;
}

.sys-article-body li {
    margin-bottom: 0.5em;
}

.sys-article-body blockquote {
    margin: 2em 0;
    padding: 20px 24px;
    border-left: 4px solid var(--sys-gold);
    background: var(--sys-bg-light);
    border-radius: 0 var(--sys-radius-sm) var(--sys-radius-sm) 0;
    font-style: italic;
    color: var(--sys-text-dark);
}

.sys-article-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--sys-radius);
    margin: 1.5em 0;
}

.sys-article-body pre {
    background: var(--sys-navy);
    color: #e2e8f0;
    padding: 20px 24px;
    border-radius: var(--sys-radius);
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.6;
    margin: 1.5em 0;
}

.sys-article-body code {
    background: var(--sys-bg-subtle);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--sys-blue);
}

.sys-article-body pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.sys-article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 14px;
}

.sys-article-body th,
.sys-article-body td {
    padding: 12px 16px;
    border: 1px solid var(--sys-border);
    text-align: left;
}

.sys-article-body th {
    background: var(--sys-bg-light);
    font-weight: 700;
    color: var(--sys-text-dark);
}

.sys-article-body hr {
    border: none;
    border-top: 2px solid var(--sys-border);
    margin: 2.5em 0;
}

/* ---- Source ---- */
.sys-article-source {
    padding: 12px 16px;
    background: var(--sys-bg-light);
    border-radius: var(--sys-radius-sm);
    font-size: 13px;
    color: var(--sys-text-light);
    margin: 32px 0;
}

.sys-article-source span {
    font-weight: 600;
}

.sys-article-source a {
    color: var(--sys-blue);
    text-decoration: none;
}

.sys-article-source a:hover {
    text-decoration: underline;
}

/* ---- Tags ---- */
.sys-article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin: 32px 0;
}

.sys-article-tags svg {
    color: var(--sys-text-muted);
}

.sys-tag-link {
    padding: 4px 14px;
    border: 1px solid var(--sys-border);
    border-radius: 50px;
    font-size: 13px;
    color: var(--sys-text-body);
    text-decoration: none;
    transition: all var(--sys-transition);
}

.sys-tag-link:hover {
    border-color: var(--sys-gold);
    color: var(--sys-gold);
    background: rgba(216,175,83,0.06);
}

/* ---- Last Updated ---- */
.sys-last-updated {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--sys-text-light);
    margin: 16px 0 32px;
}

/* ---- Author Bio ---- */
.sys-author-bio-box {
    background: var(--sys-bg-light);
    border: 1px solid var(--sys-border);
    border-radius: var(--sys-radius-lg);
    padding: 28px;
    margin: 40px 0;
}

.sys-author-bio-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.sys-author-bio-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--sys-gold);
}

.sys-avatar-placeholder-lg {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sys-bg-subtle);
    color: var(--sys-text-muted);
}

.sys-author-bio-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--sys-text-dark);
    margin: 0;
}

.sys-author-bio-role {
    font-size: 14px;
    color: var(--sys-text-light);
}

.sys-author-linkedin {
    margin-left: auto;
    color: #0A66C2;
    transition: opacity var(--sys-transition);
}

.sys-author-linkedin:hover {
    opacity: 0.7;
}

.sys-author-bio-text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--sys-text-body);
    margin: 0;
}

/* ---- CTA Section ---- */
.sys-cta-section {
    background: linear-gradient(135deg, var(--sys-navy) 0%, #1a2744 100%);
    border-radius: var(--sys-radius-lg);
    padding: 40px 36px;
    margin: 48px 0;
    position: relative;
    overflow: hidden;
}

.sys-cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(216,175,83,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.sys-cta-content {
    position: relative;
    z-index: 1;
}

.sys-cta-title {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 12px;
}

.sys-cta-text {
    font-size: 15px;
    color: rgba(255,255,255,0.75);
    line-height: 1.7;
    margin: 0 0 24px;
}

.sys-cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.sys-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--sys-radius-sm);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--sys-transition);
}

.sys-cta-primary {
    background: var(--sys-gold);
    color: var(--sys-navy);
}

.sys-cta-primary:hover {
    background: var(--sys-gold-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(216,175,83,0.4);
}

.sys-cta-whatsapp {
    background: #25D366;
    color: #fff;
}

.sys-cta-whatsapp:hover {
    background: #20bd5a;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(37,211,102,0.4);
}

/* ---- Related Articles ---- */
.sys-related-section {
    margin: 48px 0;
}

.sys-related-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--sys-text-dark);
    margin: 0 0 24px;
}

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

/* ---- Post Navigation ---- */
.sys-post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 48px 0 0;
    padding-top: 32px;
    border-top: 2px solid var(--sys-border);
}

.sys-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border: 1px solid var(--sys-border);
    border-radius: var(--sys-radius);
    text-decoration: none;
    transition: all var(--sys-transition);
}

.sys-nav-link:hover {
    border-color: var(--sys-blue);
    box-shadow: var(--sys-shadow-sm);
}

.sys-nav-next {
    text-align: right;
    justify-content: flex-end;
}

.sys-nav-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--sys-text-muted);
    margin-bottom: 4px;
}

.sys-nav-title {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--sys-text-dark);
    line-height: 1.4;
}

.sys-nav-link svg {
    color: var(--sys-text-muted);
    flex-shrink: 0;
}

/* ---- Responsive Single ---- */
@media (max-width: 1024px) {
    .sys-single-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .sys-single-sidebar {
        order: -1;
    }

    .sys-single-sidebar > div {
        position: static;
    }

    .sys-toc-wrapper {
        display: none; /* Show as mobile toggle */
    }

    .sys-share-buttons {
        flex-direction: row;
    }

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

@media (max-width: 768px) {
    .sys-single-hero {
        padding: 60px 0 40px;
    }

    .sys-single-featured-image {
        margin-top: -20px;
        margin-bottom: 24px;
    }

    .sys-featured-figure img {
        border-radius: var(--sys-radius);
    }

    .sys-single-meta {
        gap: 8px;
        font-size: 13px;
    }

    .sys-cta-section {
        padding: 28px 24px;
    }

    .sys-author-bio-box {
        padding: 20px;
    }

    .sys-author-bio-avatar {
        width: 48px;
        height: 48px;
    }

    .sys-post-nav {
        grid-template-columns: 1fr;
    }

    .sys-cta-buttons {
        flex-direction: column;
    }

    .sys-cta-btn {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .sys-single-container {
        padding: 0 16px;
    }

    .sys-article-body {
        font-size: 15px;
    }
}

/* ---- Print Styles ---- */
@media print {
    .sys-single-sidebar,
    .sys-share-wrapper,
    .sys-cta-section,
    .sys-post-nav,
    .sys-related-section {
        display: none !important;
    }

    .sys-single-layout {
        grid-template-columns: 1fr;
    }

    .sys-single-hero {
        background: none;
        padding: 20px 0;
    }

    .sys-single-title {
        color: #000;
    }

    .sys-single-meta {
        color: #666;
    }
}

/* ========================================================================
   REDES SOCIALES AL FINAL DEL CONTENIDO - v2.0
   ======================================================================== */
.sys-share-after-content {
    margin: 60px 0 40px;
    padding: 48px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.sys-share-after-content .sys-share-title {
    font-size: 28px;
    font-weight: 800;
    color: #10182B;
    margin: 0 0 32px;
}

.sys-share-after-content .sys-share-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.sys-share-after-content .sys-share-btn {
    width: 64px;
    height: 64px;
    font-size: 28px;
    border-radius: 50%;
    border: 3px solid transparent;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sys-share-after-content .sys-share-btn:hover {
    transform: scale(1.2) translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.2);
}

.sys-share-after-content .sys-share-facebook {
    background: #1877F2;
    color: #fff;
}

.sys-share-after-content .sys-share-facebook:hover {
    border-color: #fff;
}

.sys-share-after-content .sys-share-twitter {
    background: #1DA1F2;
    color: #fff;
}

.sys-share-after-content .sys-share-twitter:hover {
    border-color: #fff;
}

.sys-share-after-content .sys-share-linkedin {
    background: #0A66C2;
    color: #fff;
}

.sys-share-after-content .sys-share-linkedin:hover {
    border-color: #fff;
}

.sys-share-after-content .sys-share-whatsapp {
    background: #25D366;
    color: #fff;
}

.sys-share-after-content .sys-share-whatsapp:hover {
    border-color: #fff;
}

.sys-share-after-content .sys-share-copy {
    background: #10182B;
    color: #fff;
}

.sys-share-after-content .sys-share-copy:hover {
    border-color: #D8AF53;
}

.sys-share-after-content .sys-share-copy.copied {
    background: #22c55e;
    transform: scale(1.15);
}

@media (max-width: 768px) {
    .sys-share-after-content {
        padding: 32px 24px;
        margin: 40px 0 32px;
    }
    
    .sys-share-after-content .sys-share-title {
        font-size: 22px;
        margin-bottom: 24px;
    }
    
    .sys-share-after-content .sys-share-btn {
        width: 56px;
        height: 56px;
    }
}

/* ========================================================================
   MODO ENFOQUE / DARK MODE
   ======================================================================== */
.sys-dark-mode-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    margin-top: 24px;
    padding: 12px 16px;
    background: transparent;
    border: 1px solid var(--sys-border);
    border-radius: var(--sys-radius-sm);
    color: var(--sys-text-body);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--sys-transition);
}

.sys-dark-mode-toggle:hover {
    background: var(--sys-bg-light);
    color: var(--sys-blue);
    border-color: var(--sys-blue);
}

body.sys-dark-focus {
    background-color: #0f172a !important;
    color: #cbd5e1 !important;
}

body.sys-dark-focus .sys-single-content-wrapper {
    background-color: #0f172a !important;
}

body.sys-dark-focus .sys-article-body h2,
body.sys-dark-focus .sys-article-body h3,
body.sys-dark-focus .sys-article-body h4,
body.sys-dark-focus .sys-single-title,
body.sys-dark-focus .sys-author-bio-name,
body.sys-dark-focus .sys-related-title,
body.sys-dark-focus .sys-toc-title,
body.sys-dark-focus .sys-share-after-content .sys-share-title {
    color: #f8fafc !important;
}

body.sys-dark-focus .sys-toc-wrapper,
body.sys-dark-focus .sys-author-bio-box,
body.sys-dark-focus .sys-nav-link,
body.sys-dark-focus .sys-share-after-content {
    background: #1e293b !important;
    border-color: #334155 !important;
}

body.sys-dark-focus .sys-toc-link {
    color: #94a3b8 !important;
}

body.sys-dark-focus .sys-toc-link:hover,
body.sys-dark-focus .sys-toc-link.active {
    background: rgba(255,255,255,0.05) !important;
    color: #fff !important;
    border-left-color: var(--sys-gold) !important;
}

body.sys-dark-focus .sys-article-body {
    color: #cbd5e1 !important;
}

body.sys-dark-focus .sys-article-body blockquote {
    background: #1e293b !important;
    border-left-color: var(--sys-gold) !important;
    color: #f8fafc !important;
}

body.sys-dark-focus .sys-article-source {
    background: #1e293b !important;
    color: #94a3b8 !important;
}

body.sys-dark-focus .sys-share-btn {
    background: #1e293b !important;
    border-color: #334155 !important;
    color: #e2e8f0 !important;
}

body.sys-dark-focus .sys-highlight-box {
    background: rgba(6,106,171,0.15) !important;
    border-color: rgba(6,106,171,0.3) !important;
    color: #e2e8f0 !important;
}

body.sys-dark-focus .sys-blog-card {
    background: #1e293b !important;
    border-color: #334155 !important;
}

body.sys-dark-focus .sys-card-title a {
    color: #f8fafc !important;
}

body.sys-dark-focus .sys-dark-mode-toggle {
    background: #1e293b !important;
    border-color: #334155 !important;
    color: #f8fafc !important;
}

body.sys-dark-focus .sys-dark-mode-toggle:hover {
    border-color: var(--sys-gold) !important;
}