/* 
  CUARTA OPCIÓN - DESIGN SYSTEM
  Modern, Minimal, Institutional & Human
*/

/* 1. Base Styles */
@font-face {
    font-family: 'Open Sans';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../assets/fonts/open-sans-latin-400.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: 'Open Sans';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../assets/fonts/open-sans-latin-600.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: 'Open Sans';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('../assets/fonts/open-sans-latin-700.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: 'Open Sans';
    font-style: normal;
    font-weight: 800;
    font-display: swap;
    src: url('../assets/fonts/open-sans-latin-800.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
    /* Color Palette */
    --color-primary: #2C3E50;       /* Deep Slate Blue */
    --color-secondary: #F4F1EA;     /* Soft Sand */
    --color-accent: #7E8D85;        /* Muted Sage */
    --color-whatsapp: #25D366;      /* WhatsApp Green */
    --color-bg-light: #FAFAFA;      /* Off-White */
    --color-text-main: #333333;     /* Charcoal */
    --color-text-light: #666666;
    --color-white: #FFFFFF;
    
    /* Typography */
    --font-main: 'Open Sans', system-ui, -apple-system, sans-serif;
    
    /* Spacing */
    --section-padding: 100px;
    --container-width: 1200px;
    --border-radius: 8px;
    
    /* Transitions */
    --transition: 0.3s ease;
}

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

a:focus-visible, button:focus-visible, .btn:focus-visible, .menu-toggle:focus-visible { 
   outline: 2px solid var(--color-accent); 
   outline-offset: 4px; 
 }

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    line-height: 1.8;
    color: var(--color-text-main);
    background-color: var(--color-bg-light);
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

h1 { font-size: 3rem; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 2rem; font-weight: 600; }
h3 { font-size: 1.5rem; font-weight: 600; }

p {
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 2. Layout */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.container-narrow {
    max-width: 850px;
}

.container-medium {
    max-width: 900px;
}

.container-extra-narrow {
    max-width: 800px;
}

.section {
    padding: var(--section-padding) 0;
}

.section-alt {
    background-color: var(--color-secondary);
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px; }
.grid-2-narrow { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }

/* 3. Header & Navigation */
.header {
    background-color: var(--color-white);
    height: 80px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.header.is-scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-shrink: 1;
    min-width: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    white-space: nowrap;
    flex-shrink: 1;
}

.logo img {
    height: 36px;
    width: auto;
    flex-shrink: 0;
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    background-color: var(--color-whatsapp);
    color: #ffffff !important;
    padding: 10px 14px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    line-height: 1;
    white-space: nowrap;
    flex-shrink: 1;
}

.whatsapp-btn:hover {
    opacity: 0.92;
}

.whatsapp-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.8;
}

.nav-link:hover, .nav-link.active {
    opacity: 1;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
    background: none;
    border: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    line-height: 0;
}

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

/* Hamburger Animation */
.menu-toggle span.active:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.menu-toggle span.active:nth-child(2) {
    opacity: 0;
}
.menu-toggle span.active:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* 4. Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    filter: brightness(1.1);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* 5. Components */
/* Contact */
.contact-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.contact-card {
    background-color: var(--color-white);
    padding: 40px;
    border-radius: var(--border-radius);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.contact-card-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.contact-card h3 {
    margin-bottom: 15px;
    font-size: 1.25rem;
}

.contact-card p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: 30px;
    line-height: 1.6;
}

.contact-card-primary {
    border: 2px solid var(--color-whatsapp);
}

.contact-card-secondary {
    border: 1px solid #eee;
}

.location-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 60px;
}

.location-card {
    background-color: var(--color-white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.map-container {
    margin-top: 20px;
    border-radius: var(--border-radius);
    overflow: hidden;
    height: 300px;
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* Blog & Articles */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.article-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.article-card-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--color-primary);
    line-height: 1.4;
}

.article-card-excerpt {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: 25px;
    line-height: 1.6;
    flex-grow: 1;
}

.article-card-link {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.article-card-link:hover {
    color: var(--color-primary);
}

.article-header {
    padding: 80px 0 40px;
    background-color: var(--color-secondary);
    text-align: center;
}

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

.article-body h2, .article-body h3 {
    margin-top: 40px;
    margin-bottom: 20px;
}

.article-body p {
    margin-bottom: 20px;
    color: var(--color-text-main);
}

.article-body ul, .article-body ol {
    margin-bottom: 30px;
    padding-left: 20px;
}

.article-body li {
    margin-bottom: 12px;
    list-style-type: disc;
}

/* Institutional & Internación */
.callout-block {
    padding: 60px;
    border-radius: var(--border-radius);
}

.pillar-card {
    background-color: var(--color-white);
    padding: 40px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.pillar-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.contact-teaser {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 60px;
    border-radius: var(--border-radius);
    text-align: center;
}

.contact-teaser h2, .contact-teaser h3 {
    color: var(--color-white);
}

.stages-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.stages-container::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-secondary);
    z-index: 0;
}

.stage-card {
    background-color: var(--color-white);
    padding: 40px 40px 40px 60px;
    border-radius: var(--border-radius);
    margin-bottom: 30px;
    position: relative;
    border-left: 4px solid var(--color-accent);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    z-index: 1;
}

.stage-card::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 40px;
    width: 20px;
    height: 20px;
    background-color: var(--color-white);
    border: 4px solid var(--color-accent);
    border-radius: 50%;
}

.closure-block {
    text-align: center;
    padding: 60px;
    background-color: var(--color-secondary);
    border-radius: var(--border-radius);
}

.stage-number {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 10px;
}

.hero-img { 
  width: 100%; 
  height: auto; 
  border-radius: 8px; 
  box-shadow: 0 4px 20px rgba(0,0,0,0.1); 
  display: block; 
} 

.img-rounded { 
  width: 100%; 
  height: auto; 
  border-radius: 8px; 
  display: block; 
} 

/* 6. Footer */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 60px;
    margin-bottom: 60px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 25px;
    display: block;
}

.footer-title {
    color: var(--color-white);
}

.footer-text {
    opacity: 0.8;
    font-size: 0.95rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 40px;
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.6;
}

/* 7. Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.gallery-item img {
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

/* 8. Utilities */
.icon-svg, .icon-img {
    display: inline-block;
    vertical-align: middle;
    fill: currentColor;
}

.icon-navbar {
    width: 22px;
    height: 22px;
}

.icon-card {
    width: 32px;
    height: 32px;
}

.contact-card-secondary .icon-card {
    width: 26px;
    height: 26px;
}

/* SVG Coloring via Filters (for <img> tags) */
.filter-whatsapp {
    filter: invert(62%) sepia(87%) saturate(366%) hue-rotate(92deg) brightness(96%) contrast(89%);
}

.filter-primary {
    filter: invert(21%) sepia(13%) saturate(1251%) hue-rotate(169deg) brightness(92%) contrast(91%);
}

.u-mb-15 { margin-bottom: 15px; }
.u-mb-20 { margin-bottom: 20px; }
.u-mb-30 { margin-bottom: 30px; }
.u-mb-40 { margin-bottom: 40px; }
.u-mb-50 { margin-bottom: 50px; }

.u-mt-10 { margin-top: 10px; }
.u-mt-20 { margin-top: 20px; }
.u-mt-30 { margin-top: 30px; }
.u-mt-40 { margin-top: 40px; }
.u-mt-60 { margin-top: 60px; }

.u-pt-140 { padding-top: 140px; }
.u-ml-15 { margin-left: 15px; }
.u-m-auto { margin: 0 auto; }

.bg-white { background-color: var(--color-white); }
.shadow-soft { box-shadow: 0 4px 20px rgba(0,0,0,0.02); }

.institutional-image-placeholder {
    background-color: var(--color-secondary);
    height: 450px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-text {
    color: var(--color-accent);
    font-weight: 700;
    font-size: 1.2rem;
    opacity: 0.5;
}

.text-whatsapp { color: var(--color-whatsapp); }
.text-primary { color: var(--color-primary); }
.text-large { font-size: 1.5rem; }
.text-bold { font-weight: 700; }
.text-small { font-size: 0.95rem; }
.text-muted { opacity: 0.8; }
.text-light-muted { color: var(--color-text-light); }
.text-lh-1-6 { line-height: 1.6; }
.text-center { text-align: center; }

.list-check {
    padding-left: 0;
}

.list-check li {
    position: relative;
    padding-left: 30px;
    list-style: none;
}

.list-check li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

/* 9. Inline Content Links (SEO & Accessibility) */
/* Targets links inside main and article bodies that are not buttons or nav links */
main a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.logo):not(.article-card-link),
.article-body a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.logo):not(.article-card-link) {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    font-weight: 600;
}

main a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.logo):not(.article-card-link):hover,
.article-body a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.logo):not(.article-card-link):hover {
    text-decoration-thickness: 3px;
    color: #000;
}

main a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.logo):not(.article-card-link):visited,
.article-body a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.logo):not(.article-card-link):visited {
    color: #5D6D7E; /* Sobrio accessible tone for visited links */
}

main a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.logo):not(.article-card-link):focus-visible,
.article-body a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.logo):not(.article-card-link):focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
    border-radius: 2px;
}

/* Specific styling for rich text editorial content */
.richtext a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.article-card-link) {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    font-weight: 600;
}

.richtext a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.article-card-link):hover {
    text-decoration-thickness: 3px;
    color: #000;
}

.richtext a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.article-card-link):visited {
    color: #5D6D7E;
}

.richtext a:not(.btn):not(.btn-primary):not(.btn-outline):not(.whatsapp-btn):not(.nav-link):not(.article-card-link):focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
    border-radius: 2px;
}

/* 10. Accessibility Utilities */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: static;
  width: auto;
  height: auto;
  margin: 1rem;
  padding: 0.5rem 1rem;
  background: #000;
  color: #fff;
  z-index: 1000;
}

/* 11. Responsive Design */
@media (max-width: 992px) {
    :root {
        --section-padding: 80px;
    }
    
    h1 { font-size: 2.5rem; }
    
    .nav-container {
        padding: 0 15px;
    }

    .nav-left {
        gap: 12px;
    }

    .logo {
        font-size: 1.1rem;
    }

    .whatsapp-btn {
        padding: 8px 12px;
        font-size: 1rem;
    }

    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--color-white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        text-transform: none;
        font-size: 1.25rem;
        font-weight: 600;
        letter-spacing: normal;
    }

    .contact-cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .contact-cards-grid, .location-grid {
        grid-template-columns: 1fr;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .article-header {
        padding: 60px 20px 30px;
    }
}

@media (max-width: 600px) {
    h1 { font-size: 2rem; }

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 10px;
    }

    .nav-left {
        gap: 6px;
    }

    .logo {
        font-size: 0.9rem;
        gap: 4px;
    }

    .logo img {
        height: 26px;
    }

    .whatsapp-btn {
        padding: 6px 8px;
        font-size: 0.85rem;
        border-radius: 6px;
    }

    .menu-toggle {
        gap: 4px;
        margin-left: 4px;
    }

    .menu-toggle span {
        width: 20px;
        height: 2px;
    }
}

@media (max-width: 360px) {
    .logo {
        font-size: 0.8rem;
    }
    
    .whatsapp-btn {
        padding: 5px 6px;
        font-size: 0.8rem;
    }
}

@media (prefers-reduced-motion: reduce) { 
  html { scroll-behavior: auto; } 
}