/* 
   ESTILO: AGENTE DE DISEÑO EEF-AI
   Este archivo define la identidad visual del proyecto.
*/

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

:root {
    /* Paleta Institucional e Identidad */
    --color-primary: #33B5E5;    /* Cian EEF */
    --color-secondary: #003D6D;  /* Azul UTP */
    --color-dark: #333333;       /* Texto Principal */
    --color-gray-light: #F8FAFC; /* Fondos Suaves y Luminosos */
    --color-white: #FFFFFF;
    
    /* Gradientes Modernos */
    --gradient-brand: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    
    /* Sombras y Elevación 3D Premium */
    --shadow-sm: 0 4px 12px rgba(0, 61, 109, 0.02);
    --shadow-md: 0 10px 30px rgba(0, 61, 109, 0.05);
    --shadow-lg: 0 20px 40px rgba(0, 61, 109, 0.08);
    
    /* Espaciado y Bordes */
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    /* Aurora glow background gradients on a soft slate canvas */
    background: radial-gradient(circle at 10% 20%, rgba(51, 181, 229, 0.04) 0%, transparent 45%),
                radial-gradient(circle at 90% 80%, rgba(0, 61, 109, 0.03) 0%, transparent 45%),
                var(--color-gray-light);
    background-attachment: fixed;
    color: var(--color-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Tipografía Escala */
h1, h2, h3 {
    font-weight: 800;
    line-height: 1.1;
}

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

/* Utility Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.glass {
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: var(--shadow-md);
}

.btn-primary {
    background: var(--gradient-brand);
    color: var(--color-white);
    padding: 0.8rem 1.6rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    display: inline-block;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 61, 109, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(51, 181, 229, 0.3);
}

/* Scrollbar Personalizada */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-gray-light);
}
::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 10px;
}

/* Navegación y Header Flotante Premium */
header {
    position: sticky;
    top: 1.5rem;
    margin: 0 auto;
    max-width: 1200px;
    width: calc(100% - 4rem);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: var(--transition-smooth);
}

/* Scroll header effect controlled by JS toggling class */
header.scrolled {
    top: 0.5rem;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-lg);
    border-color: rgba(51, 181, 229, 0.2);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 1.5rem; /* Padding horizontal y vertical para la barra flotante */
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-container img {
    height: 44px; /* Un poco más compacto para la barra flotante */
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.nav-links li {
    position: relative;
}

.nav-links a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-secondary);
    padding: 0.5rem;
}

.nav-links a:hover {
    color: var(--color-primary);
}

/* Dropdown Logic */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-white);
    min-width: 280px;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    padding: 1rem 0;
    display: none;
    opacity: 0;
    transform: translateY(10px);
    transition: var(--transition-smooth);
    z-index: 100;
}

.dropdown:hover .dropdown-menu {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.dropdown-menu li a {
    padding: 0.5rem 1.5rem;
    display: block;
    font-weight: 400;
}

.dropdown-menu li a:hover {
    background: var(--color-gray-light);
    color: var(--color-primary);
}

/* Responsive Menu */
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-secondary);
}

@media (max-width: 992px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        align-items: flex-start;
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        border: 1px solid rgba(255, 255, 255, 0.5);
        border-top: none;
        gap: 1.2rem;
    }

    .nav-links.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        padding-left: 1rem;
        display: none;
        background: transparent;
        border: none;
        transform: none;
    }
    
    .dropdown.active .dropdown-menu {
        display: block;
    }
}

/* Hero Section */
.hero {
    padding: 8rem 0 6rem;
    background: radial-gradient(circle at top right, rgba(51, 181, 229, 0.1), transparent), 
                radial-gradient(circle at bottom left, rgba(0, 61, 109, 0.05), transparent);
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--color-secondary);
}

.highlight {
    color: var(--color-primary);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 10px;
    background: var(--color-primary);
    opacity: 0.2;
    z-index: -1;
}

.hero p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2.5rem;
    color: var(--color-dark);
    opacity: 0.8;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
}

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

/* Modules Section (Curricular Hub) */
.modules {
    position: relative;
    padding: 8rem 0;
    overflow: hidden;
    background: transparent;
}

.canvas-bg-container,
#recursos-canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.canvas-bg-fixed {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
}

.canvas-bg-container canvas,
.canvas-bg-fixed canvas,
#recursos-canvas-container canvas {
    display: block;
    width: 100%;
    height: 100%;
    background: transparent;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 4rem;
    color: var(--color-secondary);
}

.modules .grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Compact layout mode for standard laptops (992px to 1200px) to preserve a flawless 5x2 grid */
@media (max-width: 1200px) {
    .modules .grid {
        gap: 1rem;
    }
    
    .modules .card {
        padding: 1.25rem 1rem;
    }
    
    .modules .card-icon-container {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
        margin-bottom: 0.8rem;
        border-radius: 10px;
    }
    
    .modules .session-badge {
        font-size: 0.62rem;
        margin-bottom: 0.5rem;
    }
    
    .modules .session-card h3 {
        font-size: 1.05rem;
        margin-bottom: 0.5rem;
    }
    
    .modules .session-card p {
        font-size: 0.82rem;
        margin-bottom: 1rem;
        line-height: 1.4;
    }
    
    .modules .session-category {
        padding: 2px 8px;
        font-size: 0.6rem;
    }
}

/* Symmetric 2-column layout for tablets (600px to 991px), making it a perfect 2x5 grid */
@media (max-width: 991px) {
    .modules .grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    /* Restore larger padding and sizing on tablets since we have ample width in 2 columns */
    .modules .card {
        padding: 1.8rem 1.4rem;
    }
    
    .modules .card-icon-container {
        width: 54px;
        height: 54px;
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
        border-radius: 12px;
    }
    
    .modules .session-badge {
        font-size: 0.7rem;
        margin-bottom: 0.8rem;
    }
    
    .modules .session-card h3 {
        font-size: 1.22rem;
        margin-bottom: 0.75rem;
    }
    
    .modules .session-card p {
        font-size: 0.88rem;
        margin-bottom: 1.5rem;
        line-height: 1.5;
    }
    
    .modules .session-category {
        padding: 3px 10px;
        font-size: 0.65rem;
    }
}

/* Clean 1-column vertical stack for mobile devices (<600px), a perfect 1x10 grid */
@media (max-width: 600px) {
    .modules .grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    
    .modules .card {
        padding: 1.5rem 1.2rem;
    }
    
    .modules .card-icon-container {
        width: 48px;
        height: 48px;
        font-size: 1.35rem;
        margin-bottom: 1.2rem;
        border-radius: 10px;
    }
    
    .modules .session-badge {
        font-size: 0.68rem;
        margin-bottom: 0.6rem;
    }
    
    .modules .session-card h3 {
        font-size: 1.15rem;
        margin-bottom: 0.6rem;
    }
    
    .modules .session-card p {
        font-size: 0.85rem;
        margin-bottom: 1.2rem;
        line-height: 1.45;
    }
    
    .modules .session-category {
        padding: 2px 8px;
        font-size: 0.62rem;
    }
}

.card {
    padding: 1.8rem 1.4rem;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: rgba(51, 181, 229, 0.35);
    background: rgba(255, 255, 255, 0.88);
}

/* Session Curriculum Specifics */
.session-card {
    cursor: pointer;
    text-decoration: none;
    color: var(--color-dark);
}

.session-badge {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 0.8rem;
}

.session-card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.22rem;
    line-height: 1.3;
    font-weight: 800;
    color: var(--color-secondary);
    transition: var(--transition-smooth);
}

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

.session-card p {
    font-size: 0.88rem;
    color: #4b5563;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.session-category {
    display: inline-block;
    align-self: flex-start;
    padding: 3px 10px;
    font-size: 0.65rem;
    font-weight: 800;
    border-radius: 50px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border: 1px solid transparent;
}

.cat-fundamentals {
    background: rgba(59, 130, 246, 0.08);
    color: #2563eb;
    border-color: rgba(59, 130, 246, 0.15);
}

.cat-curator {
    background: rgba(168, 85, 247, 0.08);
    color: #7c3aed;
    border-color: rgba(168, 85, 247, 0.15);
}

.cat-multimedia {
    background: rgba(236, 72, 153, 0.08);
    color: #db2777;
    border-color: rgba(236, 72, 153, 0.15);
}

.cat-stem {
    background: rgba(16, 185, 129, 0.08);
    color: #059669;
    border-color: rgba(16, 185, 129, 0.15);
}

.cat-evaluation {
    background: rgba(245, 158, 11, 0.08);
    color: #d97706;
    border-color: rgba(245, 158, 11, 0.15);
}

.module-number {
    font-weight: 800;
    color: var(--color-primary);
    font-size: 0.9rem;
    text-transform: uppercase;
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card p {
    font-size: 0.95rem;
    opacity: 0.8;
}

/* Footer Styles - GLASSMORPHIC SCIENTIFIC MASTERPIECE */
footer {
    position: relative;
    padding: 6rem 0 3rem;
    margin-top: 8rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.75) 0%, rgba(248, 250, 252, 0.55) 100%);
    backdrop-filter: blur(25px) saturate(180%);
    -webkit-backdrop-filter: blur(25px) saturate(180%);
    border-top: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 40px 40px 0 0;
    box-shadow: 0 -15px 50px rgba(0, 61, 109, 0.04);
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, 
        var(--color-secondary) 0%, 
        #1D4ED8 25%, 
        var(--color-primary) 50%, 
        #A855F7 75%, 
        var(--color-secondary) 100%);
    background-size: 200% auto;
    animation: shine-border 6s linear infinite;
}

@keyframes shine-border {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
}

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }
}

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

@media (max-width: 640px) {
    .footer-brand {
        align-items: center;
    }
}

.footer-brand-capsule {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.5);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 4px 15px rgba(0, 61, 109, 0.02);
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
}

.footer-brand-capsule:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 8px 25px rgba(51, 181, 229, 0.08);
    border-color: rgba(51, 181, 229, 0.3);
}

.footer-brand-capsule img {
    height: 38px;
    width: auto;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.footer-brand-capsule img:hover {
    transform: scale(1.05);
}

.footer-brand p.footer-brand-title {
    font-size: 1rem;
    font-weight: 800;
    color: var(--color-secondary);
    line-height: 1.3;
    margin-bottom: 0.8rem;
    letter-spacing: -0.2px;
}

.footer-brand p.footer-brand-desc {
    font-size: 0.85rem;
    font-weight: 500;
    color: #4b5563;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    opacity: 0.85;
}

.footer-social-links {
    display: flex;
    gap: 10px;
}

.footer-social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.8);
    color: var(--color-secondary);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    box-shadow: 0 2px 8px rgba(0, 61, 109, 0.02);
}

.footer-social-btn:hover {
    background: var(--gradient-brand);
    color: var(--color-white);
    transform: translateY(-3px) scale(1.08);
    box-shadow: 0 5px 15px rgba(51, 181, 229, 0.25);
    border-color: transparent;
}

.footer-links h4, .footer-contact h4 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--color-secondary);
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.footer-links h4::after, .footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 32px;
    height: 3px;
    background: var(--gradient-brand);
    border-radius: 2px;
    box-shadow: 0 1px 4px rgba(51, 181, 229, 0.2);
}

@media (max-width: 640px) {
    .footer-links h4::after, .footer-contact h4::after {
        left: 50%;
        margin-left: -16px;
    }
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links li a {
    font-size: 0.9rem;
    font-weight: 600;
    color: #374151;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.footer-links li a i {
    font-size: 0.65rem;
    color: var(--color-primary);
    transition: var(--transition-smooth);
    opacity: 0.8;
}

.footer-links li a:hover {
    color: var(--color-primary);
    transform: translateX(6px);
}

.footer-links li a:hover i {
    transform: scale(1.3);
    color: var(--color-primary);
    filter: drop-shadow(0 0 5px rgba(51, 181, 229, 0.5));
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 1.2rem;
    font-size: 0.88rem;
    font-weight: 600;
    color: #374151;
    line-height: 1.4;
    transition: var(--transition-smooth);
}

@media (max-width: 640px) {
    .footer-contact-item {
        justify-content: center;
        text-align: center;
    }
}

.footer-contact-item:hover {
    transform: translateX(3px);
}

.footer-contact-item i {
    color: var(--color-primary);
    font-size: 0.95rem;
    margin-top: 3px;
    transition: var(--transition-smooth);
}

.footer-contact-item:hover i {
    color: var(--color-secondary);
    transform: scale(1.15);
    filter: drop-shadow(0 0 8px rgba(51, 181, 229, 0.4));
}

.footer-bottom-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 61, 109, 0.06);
    margin-top: 2rem;
}

@media (max-width: 640px) {
    .footer-bottom-wrapper {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}

.footer-bottom-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: #4b5563;
    opacity: 0.85;
}

.back-to-top {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.9);
    color: var(--color-secondary);
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 61, 109, 0.05);
    transition: var(--transition-smooth);
    animation: float-arrow 3s ease-in-out infinite;
}

.back-to-top:hover {
    background: var(--gradient-brand);
    color: var(--color-white);
    border-color: transparent;
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(51, 181, 229, 0.3);
}

@keyframes float-arrow {
    0% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
    100% { transform: translateY(0); }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
}



/* ==========================================================================
   ESTILOS PEDAGÓGICOS AVANZADOS (Experiencia Maestra)
   ========================================================================== */

/* Hilo de Innovación (Timeline Vertical) */
.learning-path {
    position: relative;
    padding: 2rem 0;
}

.learning-path::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, var(--color-secondary), var(--color-primary));
    opacity: 0.35;
}

.learning-step {
    position: relative;
    padding-left: 60px;
    margin-bottom: 4.5rem; /* Espaciado más amplio */
}

.learning-step::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 5px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-white);
    border: 4px solid var(--color-primary);
    box-shadow: 0 0 10px rgba(51, 181, 229, 0.3);
    z-index: 2;
    transition: var(--transition-smooth);
}

.learning-step:hover::before {
    border-color: var(--color-secondary);
    box-shadow: 0 0 15px rgba(0, 61, 109, 0.5);
    transform: scale(1.15);
}

.step-label {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: rgba(51, 181, 229, 0.08);
    color: var(--color-primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
}

/* Cápsulas de Atención e Insights */
.attention-capsule {
    background: #FFF9C4; /* Amarillo suave */
    border-left: 4px solid #FBC02D;
    padding: 1rem 1.5rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-size: 0.9rem;
    margin: 1rem 0;
}

.insight-card {
    background: var(--color-white);
    border: 1px dashed var(--color-primary);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    position: relative;
}

.insight-card i {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

/* Checklist Interactivo */
.checklist-container {
    background: var(--color-white);
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    margin-top: 4rem;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.checklist-item:last-child {
    border-bottom: none;
}

.checklist-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.checklist-item label {
    font-weight: 600;
    cursor: pointer;
}

/* Video/Audio Enhancements */
.media-wrapper {
    background: #000;
    border-radius: var(--radius-md);
    overflow: hidden;
    line-height: 0;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 5;
}

.media-wrapper iframe {
    pointer-events: auto;
}

.media-caption {
    background: var(--color-white);
    padding: 1rem;
    font-size: 0.85rem;
    border-top: 1px solid rgba(0,0,0,0.05);
    line-height: 1.6;
}

/* ==========================================================================
   BIBLIOTECA DE RECURSOS DIGITALES
   ========================================================================== */

.recursos {
    position: relative;
    padding: 6rem 0;
    overflow: hidden;
    background: transparent; /* Permite ver el fondo radial de la página */
}

.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.resource-card {
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
}

.resource-card:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: var(--shadow-lg);
    border-color: rgba(51, 181, 229, 0.4);
    background: rgba(255, 255, 255, 0.85);
}

.resource-thumb {
    height: 180px;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    color: var(--color-white);
}

.resource-thumb i {
    font-size: 3.5rem;
    opacity: 0.9;
}

.resource-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.category-tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 0.8rem;
    letter-spacing: 0.5px;
}

.tag-prompting { background: #E3F2FD; color: #1976D2; }
.tag-gemini { background: #F3E5F5; color: #7B1FA2; }
.tag-notebook { background: #E8F5E9; color: #388E3C; }
.tag-workspace { background: #FFF3E0; color: #F57C00; }

.resource-card h4 {
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
    color: var(--color-secondary);
}

.resource-card p {
    font-size: 0.85rem;
    opacity: 0.8;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.btn-watch {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0.7rem;
    border-radius: var(--radius-md);
    background: var(--color-gray-light);
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.85rem;
}

.btn-watch:hover {
    background: #FF0000; /* Color YouTube */
    color: var(--color-white);
}

/* Grilla de Acciones (Presentaciones) */
.action-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.presentation-card {
    padding: 2.5rem 1.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.presentation-card i {
    margin-bottom: 1rem;
}

.presentation-card h3 {
    margin-bottom: 1rem;
}

/* ==========================================================================
   RESPONSIVIDAD MÓVIL (MEDIA QUERIES)
   ========================================================================== */

@media (max-width: 768px) {
    /* Ajustes Generales */
    .container {
        padding: 0 1.2rem;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 2.5rem;
    }

    .hero {
        padding: 6rem 0 3rem; /* Ajuste para compensar el header sticky */
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    /* Forzar apilamiento de Grids */
    .grid, .action-grid {
        grid-template-columns: 1fr !important;
        gap: 1.5rem;
    }

    /* Sesión 1: Hilo de Innovación */
    .learning-path::before {
        left: 15px; /* Ajuste fino de la línea */
    }

    .learning-step {
        padding-left: 45px; /* Preserva espacio para el timeline */
        margin-bottom: 2.5rem; /* Reduce espacio excesivo */
    }

    .learning-step::before {
        left: 6px; /* Re-centrar dots en móvil */
        width: 18px;
        height: 18px;
    }

    /* Media Wrapper (Video y Contexto) */
    .media-wrapper {
        margin-bottom: 1.5rem;
    }

    /* Tarjetas de Fase */
    .phase-card {
        padding: 1.5rem;
        margin-bottom: 1rem;
    }

    /* Biblioteca de Recursos */
    .resource-grid {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .module-number {
        font-size: 0.7rem;
    }

    .innovation-step h3 {
        font-size: 1.1rem;
    }
}


/* ==========================================================================
   AURORA GLOW ORBS (MESH BACKGROUND)
   ========================================================================== */
.aurora-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.aurora-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    -webkit-filter: blur(120px);
    opacity: 0.07; /* Muy sutil sobre modo claro */
    pointer-events: none;
    mix-blend-mode: multiply;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    left: -200px;
    animation: float-orb 25s infinite alternate ease-in-out;
}

.orb-2 {
    width: 700px;
    height: 700px;
    background: var(--color-secondary);
    bottom: -250px;
    right: -150px;
    animation: float-orb 30s infinite alternate-reverse ease-in-out;
}

.orb-3 {
    width: 450px;
    height: 450px;
    background: #E040FB; /* Tono magenta/púrpura suave */
    top: 35%;
    left: 45%;
    animation: float-orb 22s infinite alternate ease-in-out;
}

@keyframes float-orb {
    0% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(90px, 60px) scale(1.1);
    }
    100% {
        transform: translate(-50px, 100px) scale(0.95);
    }
}


/* ==========================================================================
   FUTURISTIC HERO & BOHR ATOM SIMULATOR
   ========================================================================== */
.hero-grid {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 4rem;
    align-items: center;
    text-align: left;
}

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-simulator-container {
        margin: 3rem auto 0;
    }
}

.hero-badge {
    display: inline-block;
    padding: 0.4rem 1.1rem;
    background: rgba(51, 181, 229, 0.08);
    border: 1px solid rgba(51, 181, 229, 0.25);
    color: var(--color-secondary);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px rgba(51, 181, 229, 0.06);
}

/* Bohr Atom and Waves Simulator CSS */
.hero-simulator-container {
    position: relative;
    width: 320px;
    height: 320px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 50%;
    border: 1px solid rgba(51, 181, 229, 0.25);
    box-shadow: 0 15px 35px rgba(0, 61, 109, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.hero-simulator-container:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 25px 45px rgba(0, 61, 109, 0.12);
    border-color: rgba(51, 181, 229, 0.45);
}

/* Bohr Atom model */
.bohr-atom {
    position: relative;
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nucleus {
    width: 26px;
    height: 26px;
    background: var(--gradient-brand);
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(51, 181, 229, 0.7);
    z-index: 10;
    animation: pulse-nucleus 2s infinite ease-in-out;
}

@keyframes pulse-nucleus {
    0%, 100% { transform: scale(1); box-shadow: 0 0 15px rgba(51, 181, 229, 0.6); }
    50% { transform: scale(1.15); box-shadow: 0 0 25px rgba(51, 181, 229, 0.9); }
}

.orbit {
    position: absolute;
    border: 1px dashed rgba(0, 61, 109, 0.15);
    border-radius: 50%;
    animation: orbit-rotate linear infinite;
}

.orbit-1 {
    width: 90px;
    height: 90px;
    animation-duration: 6s;
}

.orbit-2 {
    width: 150px;
    height: 150px;
    transform: rotateX(70deg) rotateY(20deg);
    animation-duration: 10s;
}

.orbit-3 {
    width: 210px;
    height: 210px;
    transform: rotateX(-65deg) rotateY(45deg);
    animation-duration: 14s;
}

.electron {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-primary);
    top: 0;
    left: 50%;
    margin-left: -4px;
}

.orbit-2 .electron { background: var(--color-secondary); box-shadow: 0 0 10px var(--color-secondary); }
.orbit-3 .electron { background: #E040FB; box-shadow: 0 0 10px #E040FB; }

@keyframes orbit-rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}


/* ==========================================================================
   PRISM REFRACTIVE BORDERS & FLOATING ICONS
   ========================================================================== */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, #33B5E5 0%, #003D6D 40%, #E040FB 75%, #33B5E5 100%);
    background-size: 200% auto;
    transition: var(--transition-smooth);
    opacity: 0.85;
}

.card:hover::before {
    background-position: right center;
}

.card-icon-container {
    width: 54px;
    height: 54px;
    background: rgba(51, 181, 229, 0.06);
    border: 1px solid rgba(51, 181, 229, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--color-secondary);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.card:hover .card-icon-container {
    background: var(--gradient-brand);
    color: var(--color-white);
    transform: translateY(-4px) rotate(5deg);
    box-shadow: 0 6px 15px rgba(51, 181, 229, 0.35);
}

/* ==========================================================================
   CENTERED GLASSMORPHIC HERO CAPSULE STYLES
   ========================================================================== */
.hero-glass-card {
    position: relative;
    width: 100%;
    max-width: 860px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.72) 0%, rgba(248, 250, 252, 0.52) 100%);
    backdrop-filter: blur(25px) saturate(200%);
    -webkit-backdrop-filter: blur(25px) saturate(200%);
    border-radius: 32px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 30px 60px rgba(0, 61, 109, 0.08);
    padding: 4rem 3rem;
    text-align: center;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.hero-glass-card:hover {
    box-shadow: 0 40px 80px rgba(0, 61, 109, 0.12);
    border-color: rgba(51, 181, 229, 0.35);
    transform: translateY(-4px);
}

.hero-glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, 
        var(--color-secondary) 0%, 
        #1D4ED8 25%, 
        var(--color-primary) 50%, 
        #A855F7 75%, 
        var(--color-secondary) 100%);
    background-size: 200% auto;
    animation: shine-border 6s linear infinite;
}

.hero-glass-card h1 {
    font-size: 3.6rem;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    color: var(--color-secondary);
    font-weight: 800;
}

.hero-glass-card p {
    font-size: 1.15rem;
    color: #374151;
    max-width: 620px;
    margin: 0 auto 2.5rem;
    font-weight: 500;
    line-height: 1.6;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .hero-glass-card {
        padding: 3rem 2rem;
        border-radius: 24px;
    }
    .hero-glass-card h1 {
        font-size: 2.4rem;
    }
    .hero-glass-card p {
        font-size: 1.05rem;
        margin-bottom: 2rem;
    }
}

/* ==========================================================================
   3D SPACETIME WEBGL CANVAS BACKGROUND STYLES
   ========================================================================== */
#spacetime-canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: auto;
    overflow: hidden;
}

#spacetime-canvas-container canvas {
    display: block;
    width: 100%;
    height: 100%;
    background: transparent;
}

.hero {
    position: relative;
    overflow: hidden;
    background: transparent; /* Permite ver los orbes de aurora a través del canvas */
}