@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    /* Paleta de colores Light Mode (Mockup) */
    --bg-main: #FCFAF7; /* Warm light sand/cream */
    --bg-card: #FFFFFF;
    --bg-card-hover: #F9F6F0;
    --border-color: #E2E8F0;
    --border-hover: #CBD5E1;
    
    /* Verde Salvia (Botones y Acciones en el Mockup) */
    --primary: #5B7C71;
    --primary-hover: #435C53;
    --primary-light: rgba(91, 124, 113, 0.08);
    
    --accent: #435C53;
    --accent-hover: #2D3E38;
    --accent-light: rgba(67, 92, 83, 0.08);
    
    --danger: #EF4444;
    --danger-hover: #DC2626;
    
    --text-main: #1E293B; /* Slate oscuro para lectura */
    --text-muted: #475569;
    --text-dark: #64748B;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);

    /* Sección de Etapas y Footer (Estilo Verde Salvia Claro en el Mockup) */
    --dark-section-bg: #E2ECE9; /* Soft pastel sage green */
    --dark-card-bg: #FFFFFF;    /* Tarjetas blancas */
    --dark-border: #CBD5E1;     /* Bordes sutiles */
    --dark-text-main: #1E293B;  /* Texto oscuro */
    --dark-text-muted: #475569; /* Texto secundario oscuro */
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* NAVBAR (Light Mode) */
nav.navbar {
    background-color: rgba(252, 250, 247, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 22px;
    color: #1E293B;
    letter-spacing: -0.5px;
}

.logo-icon {
    margin-right: 8px;
    font-size: 24px;
}

.logo-text span {
    color: var(--primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 30px;
}

.nav-item a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 15px;
    transition: color 0.2s ease;
}

.nav-item a:hover,
.nav-item.active a {
    color: var(--text-main);
}

.nav-btn {
    background: var(--primary);
    color: #FFFFFF !important;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    transition: background 0.2s ease, transform 0.1s ease;
    border: none;
    cursor: pointer;
}

.nav-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

/* MOBILE NAV TRIGGER */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    background: none;
    border: none;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-main);
    border-radius: 2px;
    transition: 0.3s;
}

/* HERO SECTION */
.hero {
    padding: 90px 24px;
    text-align: left;
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
}

.hero-left h1 {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 52px;
    line-height: 1.15;
    margin-bottom: 24px;
    color: #0F172A;
    letter-spacing: -1.5px;
}

.hero-left p {
    color: var(--text-muted);
    font-size: 19px;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-ctas {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.hero-subtext {
    font-size: 13px;
    color: var(--text-dark);
    margin-top: 15px;
    font-weight: 500;
}

.btn-primary,
.article-body a.btn-primary {
    display: inline-block;
    background: var(--primary);
    color: #FFFFFF !important;
    text-decoration: none !important;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 16px;
    transition: background 0.2s, transform 0.15s;
    box-shadow: 0 4px 14px 0 rgba(91, 124, 113, 0.2);
    border: none;
    cursor: pointer;
}

.btn-primary:hover,
.article-body a.btn-primary:hover {
    background: var(--primary-hover);
    color: #FFFFFF !important;
    transform: translateY(-1px);
}

.btn-secondary,
.article-body a.btn-secondary {
    display: inline-block;
    background: var(--bg-card);
    color: var(--text-main) !important;
    text-decoration: none !important;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    border: 1px solid var(--border-color);
    transition: border 0.2s, background 0.2s, transform 0.15s;
}

.btn-secondary:hover,
.article-body a.btn-secondary:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    color: var(--primary) !important;
    transform: translateY(-1px);
}

.link-secondary {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: color 0.2s;
}

.link-secondary:hover {
    color: var(--text-main);
}

/* HERO CHART (Right Side) */
.hero-chart-container {
    background-color: #FAF4EB; /* Warm neutral cream */
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(194, 65, 12, 0.05);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-svg {
    width: 100%;
    height: auto;
}

/* SECTIONS COMMON */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 800;
    color: #0F172A;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-title p {
    color: var(--text-muted);
    font-size: 17px;
    max-width: 650px;
    margin: 0 auto;
}

/* AGITACIÓN DEL PROBLEMA */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.problem-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.problem-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

.problem-icon {
    font-size: 28px;
    margin-bottom: 12px;
    display: block;
}

.problem-card p {
    font-size: 14.5px;
    line-height: 1.5;
    color: var(--text-muted);
}

.alert-dashed-box {
    text-align: center;
    background: rgba(194, 65, 12, 0.03);
    border: 1px dashed var(--primary);
    padding: 24px;
    border-radius: 12px;
    max-width: 750px;
    margin: 0 auto;
}

.alert-dashed-box p {
    font-size: 15.5px;
    color: #9A3412;
    font-weight: 600;
    line-height: 1.6;
    margin: 0;
}

/* THREE STEP PROCESS DIAGRAM */
.process-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.process-step {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 15px;
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

.process-step span {
    font-size: 20px;
}

.process-arrow {
    color: var(--primary);
    font-weight: bold;
    font-size: 20px;
}

/* DARK SECTION (8 Stages - Ahora Claro en el Mockup) */
.dark-section {
    background-color: var(--dark-section-bg);
    color: var(--dark-text-main);
    padding: 90px 24px;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.dark-section .section-title h2 {
    color: var(--dark-text-main);
}

.dark-section .section-title p {
    color: var(--dark-text-muted);
}

.stages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 50px;
}

@media (max-width: 992px) {
    .stages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .stages-grid {
        grid-template-columns: 1fr;
    }
}


.stage-card {
    background-color: var(--dark-card-bg);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.stage-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
}

.stage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.stage-icon {
    font-size: 28px;
}

.stage-meta {
    font-size: 11px;
    font-family: monospace;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stage-card h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark-text-main);
}

.stage-card p {
    font-size: 13.5px;
    color: var(--dark-text-muted);
    line-height: 1.5;
}

/* CALLOUT BOX (CTA) */
.callout-box {
    background-color: #FAF4EB; /* Mockup rounded cream box */
    border: 1px solid rgba(194, 65, 12, 0.08);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    max-width: 800px;
    margin: 80px auto;
    box-shadow: var(--shadow-md);
}

.callout-box h3 {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
    color: #0F172A;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.callout-box p {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 28px;
}

/* CREDIBILITY & BOOK TAGS */
.book-tags-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin: 30px 0;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.book-tag {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

/* CONTENT CLUSTERS GRID (6 Cards) */
.clusters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.cluster-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    text-decoration: none;
    color: var(--text-main);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.cluster-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.cluster-icon {
    font-size: 32px;
    line-height: 1;
}

.cluster-content h4 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
    color: #0F172A;
}

.cluster-content p {
    font-size: 13.5px;
    color: var(--text-muted);
    line-height: 1.45;
}

/* FAQ LIST */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 40px;
}

.faq-item {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 24px;
}

.faq-item h4 {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 700;
    color: #0F172A;
    margin-bottom: 8px;
}

.faq-item p {
    font-size: 14.5px;
    color: var(--text-muted);
    line-height: 1.55;
}

/* GLOBAL FOOTER (Ahora Claro en el Mockup) */
footer.global-footer {
    background-color: var(--dark-section-bg);
    color: var(--dark-text-muted);
    border-top: 1px solid var(--border-color);
    padding: 60px 24px;
    text-align: left;
}

.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 50px;
}

.footer-left h3 {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 22px;
    color: var(--dark-text-main);
    margin-bottom: 15px;
}

.footer-left h3 span {
    color: var(--primary);
}

.footer-left p {
    font-size: 13.5px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-socials {
    display: flex;
    gap: 15px;
    font-size: 20px;
}

.footer-socials a {
    color: var(--dark-text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-socials a:hover {
    color: var(--primary);
}

.footer-column h4 {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    color: var(--dark-text-main);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column ul a {
    color: var(--dark-text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.footer-column ul a:hover {
    color: var(--primary);
}

.footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0 auto;
    padding-top: 25px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 13px;
    color: #4B5563;
}

/* RESPONSIVE DESIGN */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-ctas {
        justify-content: center;
    }
    
    .hero-left h1 {
        font-size: 40px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 72px;
        flex-direction: column;
        background-color: var(--bg-card);
        width: 100%;
        height: calc(100vh - 72px);
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-xl);
        padding: 40px 0;
        gap: 30px;
        z-index: 99;
    }
    
    .nav-menu.active {
        left: 0;
    }
}

/* --- ESTILOS DEL SECTOR BLOG / BIBLIOTECA --- */

.levels-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 24px 80px 24px;
    width: 100%;
}

.blog-filter-container {
    max-width: 1200px;
    margin: 20px auto 40px auto;
    padding: 0 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.filter-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 13.5px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    font-family: var(--font-body);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background-color: var(--bg-main);
}

.filter-btn.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #FFFFFF;
    box-shadow: var(--shadow-sm);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    width: 100%;
}

@media (max-width: 992px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
}

.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--text-main);
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
    box-shadow: var(--shadow-sm);
}

.blog-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.blog-card-image {
    height: 220px;
    background-size: cover;
    background-position: center;
    background-color: #E2ECE9;
    position: relative;
    width: 100%;
}

.blog-card-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background-color: var(--primary);
    color: #FFFFFF;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 6px 12px;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

.blog-card-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.blog-card-meta {
    font-size: 12.5px;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-weight: 500;
}

.blog-card h3 {
    font-family: var(--font-heading);
    font-size: 19px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 10px;
    color: #0F172A;
    transition: color 0.2s;
}

.blog-card:hover h3 {
    color: var(--primary);
}

.blog-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 20px;
    flex-grow: 1;
}

.blog-card-footer {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 14.5px;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: auto;
    transition: gap 0.2s;
}

.blog-card:hover .blog-card-footer {
    gap: 8px;
}

/* --- ESTILOS DE VISTA DE ARTÍCULO INDIVIDUAL --- */

.article-wrapper {
    max-width: 800px;
    margin: 60px auto 100px auto;
    padding: 0 24px;
    width: 100%;
}

.article-header {
    margin-bottom: 35px;
    text-align: left;
}

.article-category {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--primary);
    letter-spacing: 1px;
    font-family: var(--font-heading);
}

.article-header h1 {
    font-family: var(--font-heading);
    font-size: 38px;
    font-weight: 800;
    line-height: 1.25;
    color: #0F172A;
    margin-top: 10px;
    margin-bottom: 15px;
    letter-spacing: -0.5px;
}

.article-meta {
    font-size: 13.5px;
    color: var(--text-muted);
    font-weight: 500;
}

.article-cover {
    height: 400px;
    background-size: cover;
    background-position: center;
    background-color: #E2ECE9;
    border-radius: 16px;
    margin-bottom: 40px;
    border: 1px solid var(--border-color);
    width: 100%;
}

@media (max-width: 600px) {
    .article-cover {
        height: 250px;
    }
    .article-header h1 {
        font-size: 30px;
    }
}

.article-body {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.8;
    color: #334155;
}

.article-body p {
    margin-bottom: 24px;
}

.article-body h2 {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 700;
    color: #0F172A;
    margin-top: 45px;
    margin-bottom: 18px;
    letter-spacing: -0.5px;
}

.article-body h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: #0F172A;
    margin-top: 35px;
    margin-bottom: 15px;
}

.article-body ul, 
.article-body ol {
    margin-bottom: 24px;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.article-body a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: underline;
    transition: color 0.2s;
}

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

.article-body strong {
    color: #0F172A;
    font-weight: 700;
}

/* CAJAS DE ALERTA Y LLAMADAS A LA ACCIÓN */
.alert-box {
    border-radius: 12px;
    padding: 24px;
    margin: 35px 0;
    font-size: 15.5px;
    line-height: 1.6;
}

.alert-box.cta {
    background-color: rgba(91, 124, 113, 0.05);
    border: 1px solid var(--primary);
    color: #2D3E38;
}

.alert-box.cta strong {
    color: #1E293B;
}

.alert-box.cta a {
    color: var(--primary);
    font-weight: 700;
    text-decoration: underline;
}

.alert-box.cta a:hover {
    color: var(--primary-hover);
}

.alert-box.warning {
    background-color: #FEF2F2;
    border: 1px dashed #EF4444;
    color: #7F1D1D;
}

.alert-box.warning strong {
    color: #7F1D1D;
}

.alert-box.info {
    background-color: #FFFBEB;
    border: 1px solid #F59E0B;
    color: #78350F;
}

.alert-box.info strong {
    color: #78350F;
}