/* ======== VARIABLES Y ESTILOS GLOBALES ======== */
:root {
    --header-height: 70px;
    --color-purple-dark: #41227D;
    --color-purple-light: #7E57C2;
    --color-accent: #A881E9; 
    --color-white: #FFFFFF;
    --color-light-gray: #F7F5FA;
    --color-dark-gray: #333333;
    --color-text-light: #6D6D6D;
    
    --font-primary: 'Poppins', sans-serif;
    --font-display: 'Montserrat', sans-serif;

    --gradient-primary: linear-gradient(45deg, var(--color-purple-light), var(--color-accent));
    --gradient-bg: linear-gradient(180deg, var(--color-light-gray) 0%, var(--color-white) 100%);

    --transition-smooth: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow-soft: 0 4px 15px rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 8px 30px rgba(126, 87, 194, 0.15); 
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-primary);
    color: var(--color-dark-gray);
    background-color: var(--color-white);
    padding-top: var(--header-height); 
}
.container { max-width: 1100px; margin-inline: auto; padding-inline: 20px; }
.section { padding: 100px 0; }
.section__title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--color-purple-dark);
    text-align: center;
    margin-bottom: 60px;
    text-wrap: balance;
}
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ======== BOTONES ======== */
.button {
    display: inline-block; padding: 15px 35px; border-radius: 50px;
    text-decoration: none; font-weight: 600; transition: var(--transition-smooth);
    border: none; cursor: pointer; position: relative; overflow: hidden; z-index: 1;
}
.button span { position: relative; z-index: 2; }
.button::before {
    content: ''; position: absolute; top: 50%; left: 50%; width: 0; height: 0;
    background: rgba(255, 255, 255, 0.2); border-radius: 50%;
    transform: translate(-50%, -50%); transition: width 0.4s ease, height 0.4s ease; z-index: 1;
}
.button:hover::before { width: 300px; height: 300px; }
.button--primary { background: var(--gradient-primary); color: var(--color-white); box-shadow: var(--shadow-medium); }
.button--primary:hover { transform: translateY(-5px); box-shadow: 0 12px 35px rgba(126, 87, 194, 0.3); }
.button--secondary { background-color: transparent; color: var(--color-purple-light); border: 2px solid var(--color-accent); box-shadow: none; }
.button--secondary:hover { background-color: var(--color-purple-light); border-color: var(--color-purple-light); color: var(--color-white); transform: translateY(-5px); }

/* ======== HEADER Y NAVEGACIÓN ======== */
.header { 
    position: fixed; 
    width: 100%; 
    top: 0; 
    left: 0; 
    z-index: 100; 
    transition: background-color 0.4s ease, box-shadow 0.4s ease; 
    background-color: var(--color-white); /* Color de fondo por defecto */
    box-shadow: none; /* Sin sombra por defecto */
}
.header.scrolled { 
    background-color: var(--color-white); 
    box-shadow: var(--shadow-soft); 
    backdrop-filter: none; 
}
.nav { height: var(--header-height); display: flex; justify-content: space-between; align-items: center; }
.nav__logo { display: flex; align-items: center; height: 100%; text-decoration: none; padding-top: 5px; }
.nav__logo img { max-height: 50px; width: auto; display: block; }
.nav__list { 
    display: flex; 
    list-style: none; 
    gap: 40px; 
    align-items: center; 
}
.nav__link { 
    color: var(--color-dark-gray); 
    text-decoration: none; 
    font-weight: 600; 
    position: relative; 
    padding-bottom: 5px; 
    transition: var(--transition-smooth); 
}
.nav__link::after { 
    content: ''; 
    position: absolute; 
    width: 0; 
    height: 2px; 
    bottom: 0; 
    left: 0; 
    background-image: var(--gradient-primary); 
    transition: width 0.3s ease; 
}
.nav__link:hover::after { width: 100%; }
.nav__toggle { font-size: 1.5rem; color: var(--color-purple-dark); cursor: pointer; display: none; background: none; border: none; }

/* ESTILOS PARA EL BOTÓN "INGRESAR CLIENTE" (nav__link--cta) - PRIMARIO */
.nav__item .nav__link--cta { 
    padding-bottom: 0; 
    line-height: normal; 
    text-decoration: none; 
    position: relative; 
    overflow: hidden;
    z-index: 1; 
    
    background: var(--gradient-primary); 
    color: var(--color-white) !important; 
    padding: 10px 25px; 
    border-radius: 50px; 
    box-shadow: var(--shadow-medium); 
    font-weight: 600; 
    transition: var(--transition-smooth); 
    
    display: inline-flex; 
    align-items: center; 
    justify-content: center; 
}
.nav__item .nav__link--cta::after {
    content: none;
}

.nav__item .nav__link--cta:hover {
    transform: translateY(-5px); 
    box-shadow: 0 12px 35px rgba(126, 87, 194, 0.3); 
    color: var(--color-white) !important; 
}

.nav__item .nav__link--cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
    z-index: 1; 
}

.nav__item .nav__link--cta:hover::before {
    width: 150px; 
    height: 150px; 
}

/* ESTILOS PARA EL BOTÓN "NUESTRA TIENDA" (nav__link--secondary-cta) - SECUNDARIO */
.nav__item .nav__link--secondary-cta { 
    padding-bottom: 0; 
    line-height: normal; 
    text-decoration: none; 
    position: relative; 
    overflow: hidden;
    z-index: 1; 

    display: inline-flex;
    align-items: center;
    justify-content: center;

    background-color: transparent; 
    color: var(--color-purple-light) !important; 
    border: 2px solid var(--color-accent); 
    padding: 10px 25px;
    box-shadow: none; 
    font-weight: 600;
    transition: var(--transition-smooth);
}
.nav__item .nav__link--secondary-cta::after {
    content: none;
}

.nav__item .nav__link--secondary-cta:hover {
    background-color: var(--color-purple-light); 
    border-color: var(--color-purple-light); 
    color: var(--color-white) !important; 
    transform: translateY(-5px); 
    box-shadow: var(--shadow-medium); 
}

.nav__item .nav__link--secondary-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
    z-index: 1;
}

.nav__item .nav__link--secondary-cta:hover::before {
    width: 150px;
    height: 150px;
}

/* ======== SECCIÓN HERO ======== */
.hero { 
    height: 100vh; 
    min-height: 750px; 
    background-color: var(--color-light-gray); 
    position: relative; 
    overflow: hidden; 
    display: flex; 
    align-items: center; 
}
#threejs-container { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; }
.hero__container { z-index: 2; position: relative; }
.hero__text { max-width: 650px; }
.hero__subtitle { display: inline-block; background: var(--gradient-primary); color: var(--color-white); padding: 5px 15px; border-radius: 20px; font-size: 0.9rem; font-weight: 600; margin-bottom: 15px; }
.hero__title { font-family: var(--font-display); font-size: clamp(3rem, 8vw, 4.5rem); font-weight: 800; line-height: 1.15; color: var(--color-purple-dark); margin-bottom: 25px; letter-spacing: -1px; }
.hero__description { font-size: clamp(1.1rem, 2.5vw, 1.25rem); margin-bottom: 40px; color: var(--color-text-light); max-width: 550px; }
.hero__wave { position: absolute; bottom: -1px; left: 0; width: 100%; height: 150px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23ffffff' fill-opacity='1' d='M0,160L48,176C96,192,192,224,288,213.3C384,203,480,149,576,138.7C672,128,768,160,864,176C960,192,1056,192,1152,176C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E"); background-repeat: no-repeat; background-size: cover; z-index: 3; }

/* ======== BANNER DE CERTIFICACIONES ======== */
.certifications-banner { background-color: var(--color-purple-dark); color: var(--color-white); padding: 25px 0; }
.certifications-banner__container { display: flex; justify-content: center; align-items: center; gap: 20px; text-align: center; }
.certifications-banner i { font-size: 2rem; color: var(--color-accent); }
.certifications-banner p { font-size: 1.1rem; font-weight: 500; margin: 0; }
.certifications-banner strong { color: var(--color-accent); font-weight: 700; }

/* ======== SECCIÓN PRECIOS ======== */
.pricing { background: var(--gradient-bg); }
.pricing-toggle { display: flex; justify-content: center; align-items: center; gap: 15px; margin-bottom: 50px; }
.toggle-label { font-weight: 600; color: var(--color-text-light); transition: color 0.3s ease; }
.toggle-label.active { color: var(--color-purple-dark); }
.switch { position: relative; display: inline-block; width: 60px; height: 34px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--color-dark-gray); transition: .4s; border-radius: 34px; }
.slider:before { position: absolute; content: ""; height: 26px; width: 26px; left: 4px; bottom: 4px; background-color: white; transition: .4s; border-radius: 50%; }
input:checked + .slider { background-image: var(--gradient-primary); }
input:checked + .slider:before { transform: translateX(26px); }
.pricing__subtitle { font-size: 1.8rem; font-weight: 600; color: var(--color-purple-dark); text-align: center; margin-top: 40px; margin-bottom: 15px; border-top: 1px solid #ddd; padding-top: 40px; }
.pricing__subtitle:first-of-type { margin-top: 0; border-top: none; padding-top: 0; }
.pricing__group-description { text-align: center; max-width: 700px; margin: 0 auto 50px auto; color: var(--color-text-light); }
.pricing__container { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; align-items: stretch; }
.pricing__container--single { grid-template-columns: 1fr; max-width: 450px; margin: 0 auto; }
.pricing-card { background-color: rgba(255, 255, 255, 0.6); backdrop-filter: blur(10px); border: 2px solid transparent; padding: 40px; border-radius: 20px; box-shadow: var(--shadow-soft); transition: var(--transition-smooth); position: relative; overflow: hidden; display: flex; flex-direction: column; height: 100%; }
.pricing-card:hover { transform: translateY(-12px); box-shadow: var(--shadow-medium); border-image: var(--gradient-primary) 1; }
.pricing-card__title { font-family: var(--font-display); font-size: 1.8rem; color: var(--color-purple-dark); text-align: center; margin-bottom: 15px; }
.pricing-card__features-description { color: var(--color-text-light); text-align: center; line-height: 1.6; margin-bottom: 25px; flex-grow: 1; }
.pricing-card__price-wrapper { text-align: center; margin-bottom: 30px; color: var(--color-purple-dark); }
.price-symbol { font-size: 2rem; font-weight: 600; vertical-align: super; }
.price-value { font-family: var(--font-display); font-size: 4rem; font-weight: 800; }
.pricing-card .button { width: 100%; margin-top: auto; }
.pricing-card--recommended { border-color: var(--color-purple-light); transform: scale(1.05); z-index: 10; }
.pricing-card__badge { position: absolute; top: 25px; right: -50px; background-image: var(--gradient-primary); color: var(--color-white); padding: 8px 50px; font-size: 0.9rem; font-weight: 600; transform: rotate(45deg); text-align: center; z-index: 10; }

/* ======== SECCIÓN SOBRE NOSOTRAS ======== */
.about { background-color: var(--color-white); }
.about__container { display: flex; align-items: center; gap: 60px; }
.about__image { flex: 1; text-align: center; }
.about__image img { max-width: 100%; border-radius: 20px; box-shadow: var(--shadow-medium); }
.about__text { flex: 1.2; }
.about__text p { line-height: 1.8; margin-bottom: 20px; color: var(--color-text-light); }
.about__text strong { color: var(--color-purple-dark); font-weight: 600; }

/* ======== SECCIÓN FAQ (INFORMACIÓN) ======== */
.faq { background-color: var(--color-white); }
.faq__container { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid #EAEAEA; }
.faq-toggle { width: 100%; background: none; border: none; padding: 25px 0; display: flex; justify-content: space-between; align-items: center; text-align: left; font-family: var(--font-primary); cursor: pointer; }
.faq-toggle span { font-size: 1.2rem; font-weight: 600; color: var(--color-purple-dark); display: flex; align-items: center; gap: 15px; }
.icon-toggle { font-size: 1.2rem; color: var(--color-accent); transition: transform 0.3s ease; }
.faq-item.active .icon-toggle { transform: rotate(45deg); }
.faq-content { max-height: 0; overflow: hidden; transition: max-height 0.4s ease-out, padding-bottom 0.4s ease-out; }
.faq-content p, .faq-content ul { padding-bottom: 25px; line-height: 1.8; color: var(--color-text-light); }
.faq-content ul { padding-left: 20px; }
.faq-item.active .faq-content { max-height: 500px; }

/* ======== SECCIÓN UBICACIÓN ======== */
.location { background-color: var(--color-light-gray); }
.location__description { text-align: center; max-width: 600px; margin: -40px auto 50px auto; color: var(--color-text-light); line-height: 1.7; }
.map__container { position: relative; border-radius: 20px; overflow: hidden; box-shadow: var(--shadow-medium); border: 3px solid transparent; background: var(--gradient-primary); }
.map__container iframe { display: block; width: 100%; height: 450px; border: none; }

/* ======== SECCIÓN CONTACTO ======== */
.contact__description { text-align: center; max-width: 600px; margin: -30px auto 40px auto; color: var(--color-text-light); }
.contact__form { max-width: 700px; margin: 0 auto; }

/* ======== FOOTER ======== */
.footer { background-color: var(--color-purple-dark); color: var(--color-light-gray); padding: 50px 0; border-top: 5px solid var(--color-purple-light); }
.footer__container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }
.footer__social { display: flex; gap: 20px; }
.footer__social a { color: var(--color-white); font-size: 1.5rem; transition: var(--transition-smooth); }
.footer__social a:hover { color: var(--color-accent); transform: translateY(-4px); }

/* ======== BOTÓN FLOTANTE DE WHATSAPP ======== */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: #25D366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 6px rgba(0,0,0,0.25);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    transition: var(--transition-smooth);
}
.whatsapp-float:hover { transform: scale(1.1); background-color: #128C7E; }

/* ======== OTROS ESTILOS Y MEDIA QUERIES ======== */
.scroll-up { position: fixed; right: 25px; bottom: -20%; background-image: var(--gradient-primary); color: var(--color-white); width: 50px; height: 50px; border-radius: 50%; display: grid; place-items: center; z-index: 50; transition: bottom 0.4s, transform 0.3s, box-shadow 0.3s; box-shadow: var(--shadow-medium); border: none; text-decoration: none; }
.scroll-up:hover { transform: translateY(-5px); box-shadow: 0 12px 35px rgba(126, 87, 194, 0.3); }
.scroll-up.show { bottom: 25px; }
.cookie-banner { position: fixed; bottom: 0; left: 0; width: 100%; background-color: var(--color-purple-dark); color: var(--color-white); z-index: 998; padding: 20px; box-shadow: 0 -5px 20px rgba(0,0,0,0.1); transform: translateY(120%); transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1); }
.cookie-banner.active { transform: translateY(0); }
.cookie-banner__content { max-width: 1100px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.cookie-banner__text { margin: 0; line-height: 1.6; font-size: 0.95rem; }
.cookie-banner .button { flex-shrink: 0; padding: 10px 25px; }
.cookie-banner .button span { color: var(--color-white); }

/* --- ESTILOS MEJORADOS PARA LA TIENDA DE CURSOS (nuestratiendaonline/index.php) --- */

.shop-pricing { padding: 80px 0; background: var(--gradient-bg); }
.shop-pricing__container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}
.shop-pricing-card {
    background-color: var(--color-white);
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    padding: 35px; /* Aumentar ligeramente el padding para más aire */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
    border: 1px solid #eee;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden; /* Para asegurar que el badge no se desborde */
}
.shop-pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}
.shop-pricing-card__title {
    font-family: var(--font-display);
    font-size: 1.8rem; /* Título ligeramente más grande */
    color: var(--color-purple-dark);
    margin-bottom: 15px;
}
.shop-pricing-card__description {
    color: var(--color-text-light);
    line-height: 1.7; /* Mejorar legibilidad */
    margin-bottom: 25px;
    flex-grow: 1;
    font-size: 0.95rem; /* Un poco más pequeño para descripciones largas */
}
.shop-pricing-card__price-options {
    margin-top: 25px; /* Más espacio antes del bloque de precios */
    padding: 20px 15px; /* Padding interno para el bloque de precios */
    background-color: var(--color-light-gray); /* Fondo suave para destacarlo */
    border-radius: 12px; /* Bordes redondeados */
    border: 1px solid #e0e0e0; /* Borde sutil */
    margin-bottom: 25px; /* Espacio antes del selector */
    text-align: left; /* Alineación del texto dentro del bloque */
}
.shop-pricing-card__price-option {
    display: flex;
    flex-direction: column; /* Cambiado a columna para que la info de cuotas esté debajo */
    align-items: flex-start; /* Alinea los elementos a la izquierda */
    margin-bottom: 12px; /* Más espacio entre opciones de precio */
    font-weight: 500;
    color: var(--color-dark-gray);
    font-size: 1rem;
}
.shop-pricing-card__price-option:last-child {
    margin-bottom: 0; /* Elimina el margen inferior de la última opción */
}
.shop-pricing-card__price-option span:first-child {
    color: var(--color-text-light); /* Color más suave para la etiqueta */
}
.shop-pricing-card__price-value {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.5rem; /* Hacer el valor del precio más grande y llamativo */
    color: var(--color-purple-dark);
    display: block; /* Para que ocupe su propia línea si es necesario */
    margin-top: 5px; /* Pequeño margen superior */
}
/* Nuevo estilo para la información de cuotas en la tienda */
.shop-pricing-card__installment-info {
    display: block; /* Para que aparezca en una nueva línea */
    font-size: 0.85em;
    color: var(--color-text-light); /* Un color más suave */
    margin-top: 3px; /* Pequeño espacio superior */
}
/* Estilo mejorado para el select box dentro de la tarjeta */
.shop-pricing-card .form__select {
    width: 100%;
    padding: 12px 15px;
    border-radius: 10px; /* Más redondeado */
    border: 1px solid var(--color-accent); /* Borde con el color de acento */
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-dark-gray);
    background-color: var(--color-white);
    appearance: none; /* Elimina estilos nativos del select */
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%237E57C2'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E"); /* Flecha personalizada SVG */
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 20px;
    cursor: pointer;
    box-shadow: var(--shadow-soft); /* Sombra sutil */
    transition: all 0.3s ease;
}
.shop-pricing-card .form__select:focus {
    outline: none;
    border-color: var(--color-purple-dark);
    box-shadow: 0 0 0 3px rgba(126, 87, 194, 0.2);
}

.shop-pricing-card .button {
    width: 100%;
    margin-top: 30px; /* Más margen para separar el botón del select */
    font-size: 1.1rem; /* Botón ligeramente más grande */
    padding: 15px 35px; /* Más padding para facilitar el toque en móvil */
}
.shop-pricing-card--recommended .shop-pricing-card__badge {
    position: absolute;
    top: 15px;
    right: -40px;
    background-image: var(--gradient-primary);
    color: var(--color-white);
    padding: 5px 40px;
    font-size: 0.8rem;
    font-weight: 600;
    transform: rotate(45deg);
    text-align: center;
    z-index: 10;
}

/* Estilos para la sección de Checkout */
.checkout-section { padding: 80px 0; background: var(--gradient-bg); }
.checkout-container {
    max-width: 1100px;
    margin: 0 auto;
    background-color: var(--color-white);
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
    padding: 40px;
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}
.checkout-summary, .checkout-form-section {
    flex: 1;
    min-width: 300px; 
}
.checkout-summary {
    background-color: var(--color-light-gray);
    border-radius: 15px;
    padding: 30px;
    order: 2; 
    position: sticky;
    top: calc(var(--header-height) + 20px); 
    align-self: flex-start; 
}
.checkout-summary h3, .checkout-form-section h3 {
    font-family: var(--font-display);
    color: var(--color-purple-dark);
    font-size: 1.8rem;
    margin-bottom: 25px;
    text-align: center;
}
.checkout-summary__item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    border-bottom: 1px dashed #eee;
    padding-bottom: 5px;
    color: var(--color-text-light);
}
.checkout-summary__item strong {
    color: var(--color-dark-gray);
}
.checkout-summary__total {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-purple-dark);
    margin-top: 20px;
    padding-top: 15px;
    border-top: 2px solid var(--color-accent);
}
.checkout-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}
.form__group {
    margin-bottom: 15px;
    position: relative; 
}
.form__group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-purple-dark);
}
.form__group input[type="text"],
.form__group input[type="email"],
.form__group input[type="tel"],
.form__group input[type="number"],
.form__group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-dark-gray);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
/* Estilos para input de tipo file */
.form__group input[type="file"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-dark-gray);
    background-color: var(--color-white);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    /* Ajustes visuales para el input file */
    display: block; /* Asegura que ocupe su propia línea si es necesario */
    line-height: normal; /* Normaliza la altura del texto dentro del input file */
    cursor: pointer;
}
.form__group input[type="file"]::file-selector-button {
    background-color: var(--color-accent);
    color: var(--color-white);
    border: none;
    padding: 8px 15px;
    border-radius: 6px;
    margin-right: 15px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.form__group input[type="file"]::file-selector-button:hover {
    background-color: var(--color-purple-light);
}


.form__group input:focus,
.form__group select:focus,
.form__group input[type="file"]:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(168, 129, 233, 0.2);
}
.form__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.terms__checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-top: 20px;
    margin-bottom: 30px;
    color: var(--color-text-light);
    font-size: 0.95rem;
}
.terms__checkbox input[type="checkbox"] {
    margin-top: 4px; 
    min-width: 18px; 
    min-height: 18px;
    accent-color: var(--color-purple-light); 
}
.terms__checkbox a {
    color: var(--color-purple-light);
    text-decoration: underline;
    cursor: pointer; 
}

/* Mensajes de alerta y error */
.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 600;
    text-align: center;
}
.alert-error {
    background-color: #ffe0e0;
    color: #d32f2f;
    border: 1px solid #d32f2f;
}
.alert-success {
    background-color: #e0ffe0;
    color: #388e3c;
    border: 1px solid #388e3c;
}
.error-message {
    color: #d32f2f;
    font-size: 0.85rem;
    margin-top: 5px;
    display: none; 
}
.form__group.error input, .form__group.error select, .form__group.error input[type="file"] {
    border-color: #d32f2f;
    box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.2);
}
.form__group.error .error-message {
    display: block;
}

/* Sección de Métodos de Pago Avanzada */
.payment-methods {
    margin-top: 30px;
    border-top: 1px solid #eee;
    padding-top: 30px;
}
.payment-methods h3 {
    text-align: center;
    margin-bottom: 20px;
}
.payment-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    gap: 15px;
    flex-wrap: wrap; 
}
.payment-tab-button {
    padding: 12px 25px;
    border: 2px solid var(--color-accent);
    border-radius: 50px;
    background-color: transparent;
    color: var(--color-purple-light);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.payment-tab-button.active,
.payment-tab-button:hover {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-soft);
}
.payment-content {
    border: 1px solid #eee;
    border-radius: 15px;
    padding: 30px;
    background-color: var(--color-light-gray);
}
.payment-content .form__group { margin-bottom: 25px; }
.payment-content .form__grid { margin-bottom: 25px; }

/* Estilos para las opciones de cuotas de Mercado Pago */
.installment-options {
    margin-top: 15px;
    padding: 15px;
    background-color: var(--color-white);
    border: 1px solid #e0e0e0;
    border-radius: 10px;
}
.installment-options label {
    display: flex; /* Usar flexbox para alinear radio y texto */
    align-items: center;
    margin-bottom: 10px;
    cursor: pointer;
    font-size: 1rem;
    color: var(--color-dark-gray);
    font-weight: 500;
}
.installment-options label:last-child {
    margin-bottom: 0;
}
.installment-options input[type="radio"] {
    margin-right: 10px;
    transform: scale(1.2); /* Aumentar tamaño del radio button */
    accent-color: var(--color-purple-light); /* Color de acento */
    min-width: 18px; /* Asegurar tamaño mínimo */
    min-height: 18px; /* Asegurar tamaño mínimo */
}
.installment-options .text-muted.small {
    display: block;
    margin-top: 15px;
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.5;
}


/* Ocultar contenido de pago por defecto */
.payment-method-content { display: none; }
.payment-method-content.active { display: block; }

/* Placeholder para Mercado Pago (el div que activa el submit del form) */
.mercadopago-button-placeholder {
    background-color: #009ee3; /* Color de Mercado Pago */
    color: white;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    text-align: center;
    cursor: pointer;
    margin-top: 20px;
    transition: background-color 0.3s ease;
    display: flex; /* Para centrar el ícono y texto */
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.mercadopago-button-placeholder:hover {
    background-color: #007bb6;
}
.mercadopago-button-placeholder i {
    margin-right: 0; /* Ya tenemos gap */
}
.bank-transfer-instructions {
    background-color: var(--color-white);
    border: 1px solid var(--color-accent);
    border-radius: 10px;
    padding: 25px;
    text-align: left;
}
.bank-transfer-instructions p {
    margin-bottom: 10px;
    line-height: 1.6;
    color: var(--color-dark-gray);
}
.bank-transfer-instructions strong {
    color: var(--color-purple-dark);
}
.text-muted {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: 10px;
}
.mt-3 {
    margin-top: 1rem;
}

/* Modal para Términos y Condiciones */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal.active {
    opacity: 1;
    visibility: visible;
}
.modal-content {
    background-color: var(--color-white);
    padding: 30px;
    border-radius: 15px;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transform: translateY(-20px);
    transition: transform 0.3s ease;
}
.modal.active .modal-content {
    transform: translateY(0);
}
.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.8rem;
    color: var(--color-purple-dark);
    cursor: pointer;
    border: none;
    background: none;
}
.modal-content h4 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--color-purple-dark);
    margin-bottom: 20px;
}
.modal-content p {
    margin-bottom: 15px;
    line-height: 1.7;
    color: var(--color-text-light);
}

/* --- ESTILOS MEJORADOS PARA EL BOTÓN DE PAGO FINAL --- */
.checkout-submit-button {
    font-size: 1.2rem; 
    padding: 18px 40px; 
    display: flex; 
    align-items: center;
    justify-content: center;
    gap: 10px; 
    width: 100%; 
    max-width: 450px; 
    margin: 30px auto 0 auto; 
}

.checkout-submit-button i {
    font-size: 1.4rem; 
}

/* --- MEDIA QUERIES PARA RESPONSIVIDAD --- */
@media (max-width: 768px) {
    .section { padding: 80px 0; }
    .nav__menu { position: fixed; top: 0; right: -100%; width: 70%; max-width: 320px; height: 100vh; background-color: var(--color-light-gray); box-shadow: -2px 0 10px rgba(0,0,0,0.1); padding: 100px 40px; transition: right 0.4s ease-in-out; z-index: 100; }
    .nav__menu.show-menu { right: 0; }
    .nav__list { flex-direction: column; gap: 40px; }
    .nav__link { font-size: 1.2rem; }
    .nav__menu.show-menu .nav__item .nav__link--cta,
    .nav__menu.show-menu .nav__item .nav__link--secondary-cta { 
        margin-top: 20px; 
        width: 100%; 
        max-width: 250px; 
        margin-inline: auto; 
        display: flex; 
    }
    .nav__toggle { display: block; z-index: 101; }
    .nav__logo img { max-height: 40px; }
    .hero { text-align: center; }
    .hero__text { max-width: 100%; }
    .hero__description { margin-inline: auto; }
    .about__container { flex-direction: column-reverse; text-align: center; }
    .about__text .section__title { text-align: center; }
    .certifications-banner__container { flex-direction: column; gap: 10px; }
    .footer__container { flex-direction: column; text-align: center; }
    .cookie-banner__content { flex-direction: column; text-align: center; }
    .whatsapp-float { width: 50px; height: 50px; right: 20px; bottom: 20px; font-size: 24px; }

    /* MEDIA QUERIES ESPECÍFICAS DE LA TIENDA DE CURSOS */
    .shop-pricing__container {
        grid-template-columns: 1fr;
        padding-inline: 15px; 
    }
    .shop-pricing-card {
        padding: 25px; 
    }
    .shop-pricing-card__title {
        font-size: 1.5rem; 
    }
    .shop-pricing-card__description {
        font-size: 0.9rem; 
    }
    .shop-pricing-card__price-options {
        padding: 15px 10px; 
        margin-bottom: 20px;
    }
    .shop-pricing-card__price-option {
        font-size: 0.95rem;
    }
    .shop-pricing-card__price-value {
        font-size: 1.3rem; 
    }
    .shop-pricing-card .button {
        font-size: 1rem;
        padding: 12px 25px;
    }

    /* MEDIA QUERIES ESPECÍFICAS DEL CHECKOUT */
    .checkout-summary {
        order: 1; 
        position: static; 
        top: auto;
    }
    .checkout-form-section { order: 2; }
    .form__grid {
        grid-template-columns: 1fr;
    }
    .payment-tabs {
        flex-direction: column;
    }
    .payment-tab-button {
        width: 100%;
        max-width: 300px;
        margin-inline: auto;
    }
    .mercadopago-button-placeholder {
        width: 100%; 
        max-width: 300px; 
        margin-inline: auto; 
    }
    .checkout-submit-button {
        font-size: 1.1rem;
        padding: 15px 30px;
        width: 100%; 
        max-width: none; 
        margin-top: 25px; 
    }
}