/* =========================================
   CSS Variables & Reset
   ========================================= */
:root {
    --primary-color: #0B2545; /* Navy principal de Data Academy */
    --primary-light: #134074; /* Navy medio para hovers */
    --primary-dark: #081C33;  /* Navy oscuro */
    --accent-color: #00BCD4;  /* Cyan brillante de Data Academy */
    --accent-hover: #0097A7;  /* Cyan para hovers */
    --secondary-color: #25D366; /* WhatsApp Green */
    --text-main: #0B2545;     /* Texto principal en Navy */
    --text-muted: #5e6c84;
    --bg-main: #ffffff;
    --bg-light: #f4f5f7;
    --card-bg: #ffffff;
    --border-color: #dfe1e6;
    --shadow-sm: 0 4px 6px rgba(9, 30, 66, 0.05);
    --shadow-md: 0 10px 20px rgba(9, 30, 66, 0.08);
    --shadow-lg: 0 20px 30px rgba(9, 30, 66, 0.12);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.text-center {
    text-align: center;
}

.highlight {
    color: var(--accent-color);
    position: relative;
    display: inline-block;
}
.highlight::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 30%;
    bottom: 5px;
    left: 0;
    background-color: rgba(0, 188, 212, 0.15);
    z-index: -1;
}

/* =========================================
   Typography
   ========================================= */
h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

p {
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: 24px;
}

/* =========================================
   Buttons
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(11, 37, 69, 0.3);
    font-weight: 700;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(8, 28, 51, 0.4);
}

.btn-secondary {
    background-color: var(--primary-dark);
    color: #ffffff;
    border: 1px solid var(--primary-dark);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-link {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.btn-link:hover {
    color: var(--primary-dark);
    gap: 8px;
}

/* =========================================
   Navbar
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

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

.logo {
    display: flex;
    align-items: center;
}
.logo .logo-light {
    display: block;
    height: 38px;
    width: auto;
}
.logo .logo-dark {
    display: none;
    height: 38px;
    width: auto;
}
html.dark-theme .logo .logo-light {
    display: none;
}
html.dark-theme .logo .logo-dark {
    display: block;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-main);
}

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

.nav-links a.active {
    color: var(--accent-color) !important;
    font-weight: 700;
}

.btn-primary-outline {
    border: 2px solid var(--primary-color);
    padding: 8px 20px;
    border-radius: 50px;
    color: #ffffff !important;
    background-color: var(--primary-color);
}
.btn-primary-outline:hover {
    background-color: var(--primary-dark);
    color: #ffffff !important;
    box-shadow: 0 0 15px rgba(11, 37, 69, 0.4);
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-main);
}

/* =========================================
   Hero Section
   ========================================= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: radial-gradient(circle at top right, rgba(0, 188, 212, 0.12), transparent 45%),
                radial-gradient(circle at bottom left, rgba(11, 37, 69, 0.08), transparent 45%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-top: 32px;
}

.hero-carousel {
    position: relative;
    border-radius: 16px;
    box-shadow: var(--shadow-lg), 0 20px 40px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    aspect-ratio: 16 / 9; /* Relación de aspecto widescreen para dashboards */
    background-color: #0c1a30;
    animation: float 6s ease-in-out infinite;
    border: 1px solid rgba(0, 82, 204, 0.15);
    display: flex;
    flex-direction: column;
}

/* Simulador de navegador (Browser window header mockup) */
.hero-carousel::before {
    content: '';
    display: block;
    height: 32px;
    background-color: #f4f5f7;
    border-bottom: 1px solid #dfe1e6;
    width: 100%;
    position: relative;
    z-index: 10;
    flex-shrink: 0;
}

/* Botones de control de ventana (Red, Yellow, Green) */
.hero-carousel::after {
    content: '';
    position: absolute;
    top: 11px;
    left: 16px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #ff5f56;
    box-shadow: 16px 0 0 #ffbd2e, 32px 0 0 #27c93f;
    z-index: 11;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

.carousel-track-container {
    height: calc(100% - 32px); /* Desplazar el contenido debajo de la barra de navegación */
    width: 100%;
    position: relative;
    overflow: hidden;
}

.carousel-track {
    height: 100%;
    width: 100%;
    list-style: none;
    padding: 0;
    margin: 0;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 2;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* picture tag should match its parent size */
.carousel-slide picture {
    display: block;
    width: 100%;
    height: 100%;
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    color: #ffffff;
    padding: 20px 24px 35px 24px;
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    z-index: 3;
}

/* Botones de Navegación del Carrusel */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 1rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    transition: var(--transition);
}

.carousel-btn:hover {
    background: var(--accent-color);
    color: var(--primary-color);
    box-shadow: 0 4px 10px rgba(0, 188, 212, 0.4);
}

.btn-prev {
    left: 16px;
}

.btn-next {
    right: 16px;
}

/* Indicadores */
.carousel-nav {
    display: flex;
    justify-content: center;
    gap: 8px;
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.carousel-indicator {
    border: 0;
    border-radius: 50%;
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--transition);
}

.carousel-indicator.active {
    background: var(--accent-color);
    width: 20px;
    border-radius: 10px;
}

/* =========================================
   Filtros de Proyectos (Sub-pestañas)
   ========================================= */
.project-filters {
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}

.filter-btn {
    padding: 10px 22px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-main);
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background-color: rgba(0, 188, 212, 0.03);
}

.filter-btn.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--primary-color);
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(0, 188, 212, 0.3);
}

/* Transiciones de filtrado para las tarjetas de proyectos */
.card {
    transition: transform 0.4s ease, opacity 0.4s ease, box-shadow 0.3s ease;
}

.card.hidden {
    display: none;
    opacity: 0;
    transform: scale(0.95);
}


/* =========================================
   Projects Grid
   ========================================= */
.section-header {
    max-width: 600px;
    margin: 0 auto 56px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-img-wrapper {
    position: relative;
    aspect-ratio: 16 / 9; /* Relación de aspecto estándar para dashboards */
    width: 100%;
    overflow: hidden;
    background-color: #f4f5f7;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

/* Mockup de navegador para tarjetas */
.card-img-wrapper::before {
    content: '';
    display: block;
    height: 24px;
    background-color: #f4f5f7;
    border-bottom: 1px solid #dfe1e6;
    width: 100%;
    flex-shrink: 0;
    position: relative;
    z-index: 10;
}

.card-img-wrapper::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 12px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #ff5f56;
    box-shadow: 12px 0 0 #ffbd2e, 24px 0 0 #27c93f;
    z-index: 11;
}

.card-img-wrapper img {
    width: 100%;
    height: calc(100% - 24px); /* Ajuste por la barra de mockup */
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-img-wrapper img {
    transform: scale(1.05);
}

.badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--primary-color);
    color: #ffffff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 5;
}

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

.card-content p {
    font-size: 1rem;
    margin-bottom: 20px;
    flex-grow: 1;
}

/* =========================================
   Stats Section
   ========================================= */
.stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    text-align: center;
}

.stat-item i {
    font-size: 2.5rem;
    color: var(--accent-color); /* Cyan para visibilidad en tarjetas oscuras */
    margin-bottom: 16px;
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 4px;
}

.stat-item p {
    margin-bottom: 0;
    font-weight: 500;
}

/* =========================================
   Footer
   ========================================= */
footer {
    background-color: #081C33; /* Siempre oscuro para contraste premium */
    color: #a5adba;
    padding: 80px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 16px;
}
.footer-brand p {
    color: #a5adba;
}

footer h4 {
    font-size: 1.125rem;
    margin-bottom: 20px;
    color: white;
}

.footer-links ul li {
    margin-bottom: 12px;
}
.footer-links a {
    color: #a5adba;
}
.footer-links a:hover {
    color: white;
}

.social-icons {
    display: flex;
    gap: 16px;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    color: white;
}
.social-icons a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #a5adba;
    font-size: 0.875rem;
}

/* =========================================
   Floating WhatsApp
   ========================================= */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 0 4px 10px rgba(37, 211, 102, 0.4);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    background-color: #20b858;
    color: white;
    transform: scale(1.1);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
    70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* =========================================
   Animations
   ========================================= */
.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================
   Media Queries (Responsive)
   ========================================= */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }

    .hero-carousel {
        margin-top: 24px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--bg-main);
        flex-direction: column;
        justify-content: center;
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        transition: right 0.3s ease;
    }

    .nav-links.active {
        right: 0;
    }

    .btn-primary-outline {
        border: none;
        padding: 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
    
    .footer-brand .logo {
        justify-content: center;
    }
    
    .social-icons {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .section {
        padding: 60px 0;
    }
}

/* =========================================
   Sección de Formación (Cursos & Especialización)
   ========================================= */
.formation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    align-items: stretch;
}

.course-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 32px 24px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

/* Tarjeta Destacada (Especialización) */
.course-card.featured {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, #ffffff 0%, #f0f6ff 100%);
    grid-column: span 1; /* por defecto */
    padding: 32px;
}

.featured-grid-inner {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
}

@media (min-width: 992px) {
    .formation-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .course-card.featured {
        grid-column: span 3; /* Ocupa todo el ancho en pantallas grandes para destacar */
    }
    .featured-grid-inner {
        display: grid;
        grid-template-columns: 1.5fr 1fr;
        gap: 40px;
        align-items: center;
    }
}

.featured-text-col {
    display: flex;
    flex-direction: column;
}

.featured-visual-col {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 20px !important;
    width: 100% !important;
}

.featured-visual-col .course-cta {
    width: 100% !important;
    max-width: 280px !important;
    margin-top: 0 !important;
}

.course-tag {
    align-self: flex-start;
    background: rgba(0, 188, 212, 0.1);
    color: #0097A7;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.course-card.featured .course-tag {
    background: var(--accent-color);
    color: var(--primary-color);
}

.featured-badge {
    position: absolute;
    top: 15px;
    right: -30px;
    background: var(--secondary-color);
    color: white;
    padding: 6px 30px;
    font-size: 0.75rem;
    font-weight: 700;
    transform: rotate(45deg);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.course-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 12px;
    line-height: 1.25;
}

.course-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 24px;
    flex-grow: 1;
}

.course-features {
    list-style: none;
    padding: 0;
    margin: 0 0 28px 0;
}

.course-features li {
    font-size: 0.9rem;
    color: var(--text-main);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.course-features li i {
    color: var(--secondary-color);
    font-size: 0.85rem;
}

.course-cta {
    width: 100%;
    margin-top: auto;
}

/* Efecto Pulse para resaltar un curso */
.course-card.highlight-pulse {
    animation: highlightPulseAnimation 2s ease-in-out 3;
}

@keyframes highlightPulseAnimation {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 82, 204, 0.4);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 25px 8px rgba(0, 82, 204, 0.6);
        transform: scale(1.03);
        border-color: var(--primary-color);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 82, 204, 0);
        transform: scale(1);
    }
}

/* =========================================
   Modal de Detalles de Proyecto (Blur / Premium)
   ========================================= */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(9, 30, 66, 0.5); /* Overlay semi-oscuro */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: 20px;
    max-width: 850px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    animation: modalZoomIn 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@keyframes modalZoomIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 2rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    z-index: 2010;
}

.modal-close:hover {
    color: var(--text-main);
    transform: rotate(90deg);
}

.modal-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: stretch;
}

.modal-image-side {
    background-color: #0c1a30;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    overflow: hidden;
}

.modal-image-side img {
    width: 100%;
    height: auto;
    max-height: 100%;
    object-fit: contain; /* Mostrar dashboard completo sin recortes */
    border-radius: 8px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-info-side {
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.badge-modal {
    align-self: flex-start;
    background: var(--accent-color);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.modal-info-side h2 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    line-height: 1.2;
    color: var(--text-main);
}

.modal-info-side p {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.modal-meta {
    margin-bottom: 28px;
}

.modal-meta h4 {
    font-size: 0.95rem;
    margin-bottom: 12px;
    color: var(--text-main);
}

.tools-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tools-tags span {
    background-color: var(--bg-light);
    color: var(--text-main);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.modal-cta-container {
    margin-top: auto;
}

.modal-cta-container button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

/* Responsividad para el Modal */
@media (max-width: 768px) {
    .modal-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-image-side img {
        min-height: 200px;
        max-height: 250px;
    }
    
    .modal-info-side {
        padding: 28px 24px;
    }
}

/* =========================================
   Estilos de las Páginas de Detalle (Multi-página)
   ========================================= */
.detail-hero {
    padding: 120px 0 60px;
    background: radial-gradient(circle at top right, rgba(76, 154, 255, 0.08), transparent 30%),
                var(--bg-light);
    border-bottom: 1px solid var(--border-color);
}

.detail-container {
    max-width: 900px;
    margin: 0 auto;
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.detail-header {
    margin-bottom: 40px;
}

.detail-header h1 {
    font-size: clamp(2.2rem, 4.5vw, 3.2rem);
    margin-bottom: 16px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

.detail-content {
    padding: 60px 0;
}

.detail-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

@media (max-width: 768px) {
    .detail-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

.detail-section-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.detail-section-title i {
    color: var(--primary-color);
}

.syllabus-list {
    list-style: none;
    padding: 0;
}

.syllabus-module {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.syllabus-module:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.syllabus-module h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.syllabus-module p {
    font-size: 0.95rem;
    margin-bottom: 0;
    color: var(--text-muted);
}

.detail-image-wrapper {
    display: block;
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.detail-image-wrapper:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.detail-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

.image-overlay-msg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(9, 30, 66, 0.85);
    color: white;
    text-align: center;
    padding: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
    white-space: nowrap;
    box-sizing: border-box;
}

.detail-image-wrapper:hover .image-overlay-msg {
    background: var(--primary-color);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.tech-tags span {
    background-color: rgba(0, 82, 204, 0.05);
    color: var(--primary-color);
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Logos y Gráficos en Sección Formación */
.course-logo {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.course-tool-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.featured-tool-img {
    width: 100%;
    max-width: 280px;
    height: auto;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: block;
}

/* =========================================
   FAQ Accordion (Landing Page)
   ========================================= */
.faq-container {
    margin-top: 32px;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 16px;
    padding: 16px 20px;
    transition: var(--transition);
    background: white;
}

.faq-item summary {
    font-weight: 700;
    color: var(--text-main);
    font-size: 1.05rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none; /* Hides default marker */
}

.faq-item summary::-webkit-details-marker {
    display: none; /* Hides safari default marker */
}

.faq-item .faq-icon {
    font-size: 0.9rem;
    transition: transform 0.3s ease;
    color: var(--primary-color);
}

.faq-item[open] {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.faq-item[open] .faq-icon {
    transform: rotate(180deg);
}

.faq-item p {
    margin-top: 12px;
    margin-bottom: 0;
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* =========================================
   Modo Oscuro (Dark Mode Theme Overrides)
   ========================================= */
html.dark-theme {
    --text-main: #f4f5f7;
    --text-muted: #a5adba;
    --bg-main: #051329; /* Navy profundo premium */
    --bg-light: #0B2545; /* Navy de Data Academy */
    --card-bg: #0d2c52;  /* Navy medio para elevación visual */
    --border-color: #133a6b;
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 20px 30px rgba(0, 0, 0, 0.3);
}

/* Ajustes específicos de componentes en Modo Oscuro */
html.dark-theme .navbar {
    background: rgba(5, 19, 41, 0.85);
    border-color: var(--border-color);
}
html.dark-theme .navbar.scrolled {
    background: rgba(5, 19, 41, 0.95);
    border-bottom: 1px solid var(--border-color);
}
html.dark-theme .btn-secondary {
    background-color: var(--card-bg);
    color: var(--text-main);
    border-color: var(--border-color);
}
html.dark-theme .btn-secondary:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}
html.dark-theme .course-card.featured {
    border-color: var(--primary-light);
    background: linear-gradient(135deg, #102444 0%, #071224 100%);
}
html.dark-theme .stat-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
}
html.dark-theme .faq-item {
    background-color: var(--card-bg) !important;
    border-color: var(--border-color) !important;
}
html.dark-theme .faq-item[open] {
    border-color: var(--primary-light) !important;
}
html.dark-theme .syllabus-module {
    background-color: var(--card-bg) !important;
    border-color: var(--border-color) !important;
}
html.dark-theme .syllabus-module:hover {
    border-color: var(--accent-color) !important;
}

/* Títulos h4 de módulos: blanco + negrita para contraste en dark */
html.dark-theme .syllabus-module h4 {
    color: #ffffff !important;
    font-weight: 800 !important;
    text-shadow: 0 1px 3px rgba(0,0,0,0.4);
}
html.dark-theme .syllabus-module p {
    color: #c8d6e8 !important;
}

html.dark-theme .detail-image-wrapper {
    border-color: var(--border-color);
}
html.dark-theme .modal-content {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}
html.dark-theme .modal-image-side {
    background-color: #071224;
}
html.dark-theme .tools-tags span {
    background-color: var(--bg-light);
    border-color: var(--border-color);
    color: #e0e8f4;
}
html.dark-theme .hero-carousel {
    background-color: #071224;
    border-color: #1b355a;
}

html.dark-theme .hero-carousel::before {
    background-color: #102444;
    border-bottom-color: #1b355a;
}

/* Modo oscuro para los mockups de tarjetas */
html.dark-theme .card-img-wrapper {
    background-color: #071224;
    border-bottom-color: #1b355a;
}

html.dark-theme .card-img-wrapper::before {
    background-color: #102444;
    border-bottom-color: #1b355a;
}

/* ---- Tarjetas de Proyectos: contraste en dark (solo texto) ---- */
/* Título h3 de card blanco + negrita */
html.dark-theme .card-content h3 {
    color: #ffffff !important;
    font-weight: 700;
}
/* Descripción de card: gris claro legible */
html.dark-theme .card-content p {
    color: #b8c9e0 !important;
}
/* Enlace "Ver Detalle" visible */
html.dark-theme .card-content .btn-link {
    color: var(--accent-color) !important;
}
html.dark-theme .card-content .btn-link:hover {
    color: #ffffff !important;
}

/* Modo oscuro para los tags de curso (Curso en Vivo, En Vivo, Especialización) */
html.dark-theme .course-tag {
    background: rgba(0, 188, 212, 0.22) !important;
    color: #00e5f5 !important;          /* cyan brillante — máximo contraste */
    font-weight: 700 !important;
    border: 1px solid rgba(0, 188, 212, 0.35);
}

/* Featured card: fondo oscuro en dark mode (override inline style) */
html.dark-theme .course-card.featured {
    background: linear-gradient(135deg, #102444 0%, #071224 100%) !important;
    border-color: var(--accent-color) !important;
}

/* Títulos h3 en course-card en dark */
html.dark-theme .course-card h3 {
    color: #ffffff !important;
}
html.dark-theme .course-desc {
    color: #b8c9e0 !important;
}
html.dark-theme .course-features li {
    color: #dce8f5 !important;
}

/* Section headers en dark */
html.dark-theme .section-header h2 {
    color: #ffffff;
}
html.dark-theme .section-header p {
    color: #a5b8cc;
}

/* Botón de Alternancia de Tema (Sleek Theme Toggle Button) */
.theme-toggle-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-main);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    margin-left: 16px;
    outline: none;
}
.theme-toggle-btn:hover {
    background-color: rgba(0, 188, 212, 0.08);
    color: var(--accent-color);
}
html.dark-theme .theme-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--accent-color);
}

/* Efecto de rotación del icono al hacer click */
.theme-toggle-btn i {
    transition: transform 0.5s ease;
}
.theme-toggle-btn:active i {
    transform: rotate(360deg) scale(0.8);
}

/* =========================================
   Estilos específicos de WhatsApp de marca
   ========================================= */
.btn-whatsapp {
    background-color: #25D366 !important;
    border-color: #25D366 !important;
    color: white !important;
}

.btn-whatsapp i.fa-whatsapp {
    color: white !important;
}

.btn-whatsapp:hover {
    background-color: #20b858 !important;
    border-color: #20b858 !important;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4) !important;
}

.btn-secondary i.fa-whatsapp {
    color: #25D366; /* El icono es siempre verde WhatsApp */
    transition: var(--transition);
}

/* Efecto de fondo verde WhatsApp en hover para botones que contienen whatsapp */
.btn-secondary:has(.fa-whatsapp):hover {
    border-color: #25D366 !important;
    background-color: #25D366 !important;
    color: white !important;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4) !important;
}

.btn-secondary:has(.fa-whatsapp):hover i.fa-whatsapp {
    color: white !important; /* El icono cambia a blanco sobre fondo verde */
}

html.dark-theme .btn-secondary:has(.fa-whatsapp):hover {
    border-color: #25D366 !important;
    background-color: #25D366 !important;
    color: white !important;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4) !important;
}

html.dark-theme .btn-secondary:has(.fa-whatsapp):hover i.fa-whatsapp {
    color: white !important;
}

/* =========================================
   Estilos de Catálogo de Cursos (Pestañas)
   ========================================= */
.catalog-tabs-container {
    margin-top: 30px;
    width: 100%;
}
.catalog-tabs-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 15px;
}
.catalog-tab-btn {
    background: none;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
}
.catalog-tab-btn:hover {
    color: var(--primary-color);
    background-color: var(--bg-light);
}
.catalog-tab-btn.active {
    color: white;
    background-color: var(--primary-color);
}
html.dark-theme .catalog-tab-btn.active {
    color: var(--primary-dark);
    background-color: var(--accent-color);
}

.catalog-tab-panel {
    display: none;
    opacity: 0;
    transition: opacity 0.4s ease;
}
.catalog-tab-panel.active {
    display: block;
    opacity: 1;
}

.course-grid-catalog {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 30px;
    align-items: stretch;
}
@media (max-width: 992px) {
    .course-grid-catalog {
        grid-template-columns: 1fr;
    }
}

.sale-badge-pill {
    display: inline-block;
    padding: 5px 12px;
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 20px;
    margin-right: 8px;
    margin-bottom: 8px;
    text-transform: uppercase;
}
.sale-badge-red {
    background-color: rgba(255, 74, 74, 0.1);
    color: #ff4a4a;
    border: 1px solid #ff4a4a;
}
.sale-badge-blue {
    background-color: rgba(0, 188, 212, 0.1);
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}
.sale-badge-green {
    background-color: rgba(37, 211, 102, 0.1);
    color: #25D366;
    border: 1px solid #25D366;
}

/* Combos & Cross-Selling Table Styles */
.combos-section {
    margin-top: 60px;
    background: var(--bg-light);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid var(--border-color);
}
.combos-table-wrapper {
    overflow-x: auto;
    margin-top: 30px;
}
.combos-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
.combos-table th {
    background-color: var(--primary-color);
    color: white;
    padding: 15px 20px;
    font-weight: 700;
}
html.dark-theme .combos-table th {
    background-color: var(--primary-dark);
    color: var(--accent-color);
}
.combos-table td {
    padding: 18px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
}
.combos-table tr:hover {
    background-color: rgba(0, 188, 212, 0.03);
}
html.dark-theme .combos-table tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}
.combo-highlight {
    font-weight: 800;
    color: var(--primary-color);
}
html.dark-theme .combo-highlight {
    color: var(--accent-color);
}