/**
 * LANDING PAGE CSS - EDUCANDO LATAM
 * Diseño moderno e impactante
 */

/* ========================================
   VARIABLES Y FUENTES
======================================== */
:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #818CF8;
    --secondary: #10B981;
    --dark: #1F2937;
    --light: #F9FAFB;
    --gray: #6B7280;
    --white: #FFFFFF;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Poppins', sans-serif;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ========================================
   HEADER / NAVIGATION
======================================== */
.navbar {
    padding: 1rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: var(--white) !important;
    box-shadow: var(--shadow);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark) !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand i {
    font-size: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--dark) !important;
    padding: 0.5rem 1rem !important;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* ========================================
   HERO SLIDER
======================================== */
.hero-slider {
    margin-top: 76px;
    position: relative;
}

.carousel-item {
    height: 600px;
    position: relative;
}

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

.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.8), rgba(16, 185, 129, 0.6));
    z-index: 1;
}

.carousel-caption {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    z-index: 2;
    text-align: center;
}

.carousel-caption .subtitle {
    font-size: 1.2rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.carousel-caption h1 {
    font-size: 3.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    margin-bottom: 1.5rem;
}

.carousel-caption .lead {
    font-size: 1.3rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.3);
}

.carousel-indicators button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin: 0 5px;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    background-color: rgba(255, 255, 255, 0.3);
    padding: 2rem;
    border-radius: 50%;
}

/* ========================================
   ESTADÍSTICAS
======================================== */
.stats-section {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.stats-section i {
    opacity: 0.9;
}

.counter {
    font-size: 3rem;
}

/* ========================================
   SECCIONES GENERALES
======================================== */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 1.5rem auto 0;
}

/* ========================================
   CARACTERÍSTICAS / FEATURES
======================================== */
.feature-card {
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.feature-icon i {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* ========================================
   CURSOS / COURSES
======================================== */
.course-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.course-thumbnail {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.course-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.course-card:hover .course-thumbnail img {
    transform: scale(1.1);
}

.course-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.course-category {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255, 255, 255, 0.95);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.course-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-description {
    font-size: 0.9rem;
    line-height: 1.6;
}

.course-meta {
    font-size: 0.85rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #E5E7EB;
}

.course-price {
    font-size: 1.5rem;
}

/* ========================================
   TESTIMONIOS
======================================== */
.testimonial-card {
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.testimonial-photo {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--primary-light);
}

.testimonial-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.testimonial-text {
    font-style: italic;
    color: var(--gray);
    line-height: 1.8;
}

.testimonial-name {
    color: var(--dark);
}

.testimonial-course {
    color: var(--primary);
}

#testimonialsCarousel .carousel-control-prev,
#testimonialsCarousel .carousel-control-next {
    width: auto;
}

/* ========================================
   CTA SECTION
======================================== */
.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    position: relative;
    overflow: hidden;
}

.bg-gradient-primary::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

/* ========================================
   FOOTER
======================================== */
.footer {
    background: #111827 !important;
}

.footer h4,
.footer h5 {
    color: var(--white);
}

.footer a {
    transition: var(--transition);
}

.hover-primary:hover {
    color: var(--primary) !important;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
    transform: translateY(-3px);
}

/* ========================================
   BOTÓN VOLVER ARRIBA
======================================== */
#backToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    display: none;
    z-index: 999;
    border: none;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

#backToTop:hover {
    transform: translateY(-5px);
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 991px) {
    .navbar-collapse {
        background: var(--white);
        padding: 1rem;
        margin-top: 1rem;
        border-radius: 10px;
        box-shadow: var(--shadow);
    }
    
    .nav-link::after {
        display: none;
    }
}

@media (max-width: 768px) {
    .carousel-item {
        height: 500px;
    }
    
    .carousel-caption h1 {
        font-size: 2rem;
    }
    
    .carousel-caption .lead {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .counter {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .carousel-item {
        height: 400px;
    }
    
    .carousel-caption h1 {
        font-size: 1.5rem;
    }
    
    .carousel-caption .subtitle {
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
}

/* ========================================
   ANIMACIONES
======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    font-weight: 500;
    padding: 0.6rem 1.5rem;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(79, 70, 229, 0.3);
}

.btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
    font-weight: 500;
    transition: var(--transition);
}

.btn-outline-primary:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(79, 70, 229, 0.3);
}