/* ================================================================
   VARIABLES CSS - CONFIGURABLE
   ================================================================ */

:root {
    /* Colores oficiales del ebook 100Fe */
    --color-primary: #86fc00;      /* Verde neón (marca Tree Monkis) */
    --color-secondary: #fe4076;    /* Magenta (marca Tree Monkis) */
    --color-accent: #f0f0f0;       /* Gris muy claro */
    --color-text: #1A1A1A;         /* Casi negro */
    --color-text-light: #666;      /* Gris oscuro */
    --color-border: #DDD;          /* Gris claro */
    --color-background: #F8F7F4;   /* Fondo crema muy claro */
    --color-white: #FFFFFF;
    
    /* Tipografía */
    --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Bebas Neue', Impact, Arial Narrow, sans-serif;
    --font-size-base: 18px;
    --font-size-small: 15px;
    --font-size-large: 20px;
    --font-size-h1: 2.5rem;
    --font-size-h2: 2rem;
    --font-size-h3: 1.5rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Otros */
    --border-radius: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

/* ================================================================
   RESET Y BASE
   ================================================================ */

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    line-height: 1.6;
    background-color: var(--color-white);
}

/* ================================================================
   TIPOGRAFÍA
   ================================================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-h1); letter-spacing: 2px; }
h2 { font-size: var(--font-size-h2); letter-spacing: 1.5px; }
h3 { font-size: var(--font-size-h3); letter-spacing: 1px; }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

/* ================================================================
   CONTAINER
   ================================================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ================================================================
   HERO SECTION
   ================================================================ */

.hero {
    background: linear-gradient(135deg, #f9f9f9 0%, #ffffff 50%, #f0fff4 100%);
    padding: 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(134, 252, 0, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(254, 64, 118, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero__content {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.hero__ebook {
    width: 100%;
    height: auto;
    border-radius: 0;
    box-shadow: none;
    transition: var(--transition);
    margin: 0;
    display: block;
}

.hero__ebook:hover {
    transform: none;
    box-shadow: none;
}

.hero__text {
    max-width: 700px;
    padding: 0 var(--spacing-md);
}

.hero__headline {
    font-size: var(--font-size-h1);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
    color: var(--color-text);
}

.hero__headline .highlight {
    color: var(--color-secondary);
    display: block;
    margin-top: var(--spacing-sm);
}

.hero__subheadline {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    color: var(--color-text);
    opacity: 0.9;
}

.hero__price-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary) 0%, #6fcd00 100%);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 50px;
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-sm);
}

.hero__price-label {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: #000;
}

.hero__price-amount {
    font-size: 1.75rem;
    font-weight: 800;
    color: #000;
}

.hero__trust {
    font-size: var(--font-size-small);
    opacity: 0.8;
    color: var(--color-text);
    padding: 0;
    margin: 0;
}

/* Desktop: two-column hero */
@media (min-width: 1024px) {
    .hero {
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        align-items: stretch;
        text-align: left;
        min-height: 600px;
        overflow: visible;
    }

    .hero__ebook {
        grid-column: 1;
        grid-row: 1;
        width: 100%;
        max-width: 100%;
        height: 100%;
        min-height: 600px;
        object-fit: cover;
        object-position: center center;
        display: block;
    }

    .hero > .container {
        grid-column: 2;
        grid-row: 1;
        width: 100%;
        max-width: 100%;
        margin: 0;
        display: flex;
        align-items: center;
        min-width: 0;
        padding: 0 var(--spacing-xl);
    }

    .hero__content {
        align-items: flex-start;
        margin: 0;
        padding: var(--spacing-xl) 0;
        max-width: 100%;
        gap: var(--spacing-md);
    }

    .hero__text {
        padding: 0;
    }

    .hero__headline {
        font-size: 2.8rem;
        margin-bottom: var(--spacing-sm);
    }

    .hero__subheadline {
        font-size: var(--font-size-base);
        margin-bottom: 0;
    }

    .hero__price-badge {
        align-self: flex-start;
    }

    .hero__trust {
        font-size: var(--font-size-small);
        text-align: left;
    }
}

/* ================================================================
   BOTONES
   ================================================================ */

.cta-button {
    background-color: var(--color-primary);
    color: #000;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-block;
}

.cta-button:hover {
    background-color: #6fcd00;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.cta-button:active {
    transform: translateY(0);
}

.cta-button--primary {
    background-color: var(--color-primary);
    color: #000;
}

.cta-button--dark {
    background-color: #000;
    color: var(--color-primary);
    margin-top: var(--spacing-md);
}

.cta-button--dark:hover {
    background-color: #222;
    color: var(--color-primary);
}

.cta-button--large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-large);
}

/* ================================================================
   SECCIONES
   ================================================================ */

section {
    padding: var(--spacing-2xl) 0;
}

.section__title {
    text-align: center;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-h2);
}

.section__subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-large);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ================================================================
   SECCIÓN PROBLEMA
   ================================================================ */

.problem {
    background-color: var(--color-background);
}

.problem__list {
    list-style: none;
    max-width: 600px;
    margin: 0 auto;
}

.problem__item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-large);
}

.problem__icon {
    display: inline-block;
    margin-right: var(--spacing-md);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.problem__item p {
    margin: 0;
    margin-top: 0.2rem;
}

/* ================================================================
   SECCIÓN SOLUCIÓN
   ================================================================ */

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

.benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.benefit {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    background-color: var(--color-background);
    transition: var(--transition);
}

.benefit:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.benefit__icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--spacing-md);
}

.benefit__title {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.benefit__description {
    color: var(--color-text-light);
    font-size: var(--font-size-small);
    margin: 0;
}

/* ================================================================
   SECCIÓN MUESTRA DEL EBOOK
   ================================================================ */

.ebook-preview {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.ebook-preview .section__title {
    color: var(--color-white);
    text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.ebook-preview__subtitle {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    letter-spacing: 1px;
}

.ebook-preview__layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    max-width: 1100px;
    margin: 0 auto;
    align-items: center;
}

@media (min-width: 768px) {
    .ebook-preview__layout {
        grid-template-columns: 1fr 1fr;
    }
}

.ebook-preview__images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.ebook-preview__image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    object-fit: cover;
}

.ebook-preview__image--main {
    grid-column: 1 / -1;
    max-height: 280px;
    object-position: center top;
}

.ebook-preview__image--secondary {
    grid-column: 1 / -1;
    max-height: 180px;
}

.ebook-preview__image:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.ebook-preview__details {
    text-align: left;
    color: var(--color-white);
}

.ebook-preview__list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0 0;
}

.ebook-preview__list li {
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-base);
    border-bottom: 1px solid rgba(255,255,255,0.15);
    line-height: 1.5;
}

.ebook-preview__list li:last-child {
    border-bottom: none;
}

.ebook-preview__list strong {
    color: var(--color-primary);
}

/* ================================================================
   SECCIÓN TESTIMONIOS
   ================================================================ */

.testimonials {
    background-color: var(--color-background);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.testimonial {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.testimonial:hover {
    box-shadow: var(--shadow-md);
}

.testimonial__header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.testimonial__avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: var(--spacing-md);
    object-fit: cover;
    background-color: var(--color-border);
}

.testimonial__info {
    flex: 1;
}

.testimonial__name {
    margin: 0;
    font-size: var(--font-size-base);
    color: var(--color-secondary);
}

.testimonial__age {
    margin: 0;
    font-size: var(--font-size-small);
    color: var(--color-text-light);
}

.testimonial__text {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-base);
    line-height: 1.7;
    font-style: italic;
    color: var(--color-text);
}

.testimonial__rating {
    color: #c49a00;
    font-size: var(--font-size-small);
}

/* ================================================================
   SECCIÓN CTA
   ================================================================ */

.cta-section {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: var(--color-white);
    text-align: center;
}

.cta-section .section__title,
.cta-section .section__subtitle {
    color: var(--color-white);
}

.section__trust {
    color: var(--color-primary);
    font-size: var(--font-size-small);
    line-height: 1.8;
}

/* ================================================================
   SECCIÓN PRECIO Y MÉTODOS DE PAGO
   ================================================================ */

.pricing {
    background-color: #f9f9f9;
    padding: var(--spacing-2xl) 0;
}

.pricing__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.pricing__price {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, #6fcd00 100%);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.pricing__title {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-md);
    color: #000;
}

.pricing__amount {
    font-size: 3rem;
    font-weight: 800;
    color: #000;
    margin: var(--spacing-md) 0;
    line-height: 1;
}

.pricing__currency {
    font-size: 1.5rem;
    font-weight: 600;
}

.pricing__tax {
    font-size: var(--font-size-small);
    color: rgba(0, 0, 0, 0.7);
    margin: 0;
}

.pricing__cta {
    width: 100%;
    margin-top: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
}

.pricing__guarantee {
    font-size: var(--font-size-small);
    color: rgba(0, 0, 0, 0.75);
    margin-top: var(--spacing-sm);
    margin-bottom: 0;
    font-weight: 600;
}

.pricing__urgency {
    font-size: var(--font-size-small);
    color: #c0392b;
    font-weight: 700;
    margin-top: var(--spacing-xs);
    margin-bottom: 0;
    letter-spacing: 0.5px;
}

.pricing__anchor {
    text-align: center;
    background: rgba(255,255,255,0.15);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.pricing__anchor p {
    margin: var(--spacing-xs) 0;
    font-size: var(--font-size-small);
    color: rgba(0,0,0,0.8);
    line-height: 1.4;
}

.pricing__anchor strong {
    color: #000;
}

.pricing__payment {
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.pricing__methods {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.payment-method {
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    border: 1px solid #eee;
    transition: var(--transition);
}

.payment-method:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.14);
    transform: translateY(-2px);
}

.payment-method__logo {
    height: 40px;
    width: auto;
    max-width: 110px;
    display: block;
}

/* ================================================================
   SECCIÓN AUTOR
   ================================================================ */

.author {
    background-color: var(--color-white);
    border-top: 1px solid var(--color-border);
}

.author__content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.author__label {
    display: inline-block;
    font-size: var(--font-size-small);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.author__name {
    font-size: var(--font-size-h2);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.author__bio {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.author__credentials {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: left;
    max-width: 480px;
    margin: 0 auto;
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
}

.author__credentials li {
    font-size: var(--font-size-base);
    color: var(--color-text);
    font-weight: 500;
}

/* ================================================================
   STICKY CTA (mobile)
   ================================================================ */

.sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
    transform: translateY(100%);
    transition: transform 0.35s ease;
    display: none;
}

.sticky-cta.is-visible {
    transform: translateY(0);
}

.sticky-cta__button {
    width: 100%;
    font-size: var(--font-size-base);
    padding: var(--spacing-md) var(--spacing-sm);
}

@media (min-width: 769px) {
    .sticky-cta {
        display: none !important;
    }
}

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

/* ================================================================
   FOOTER
   ================================================================ */

.footer {
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
    text-align: center;
    font-size: var(--font-size-small);
}

.footer__text {
    margin-bottom: var(--spacing-sm);
}

.footer__legal {
    opacity: 0.9;
}

.footer__link {
    color: var(--color-primary);
}

.footer__link:hover {
    opacity: 0.8;
}

.footer__brand {
    margin-top: var(--spacing-md);
    opacity: 0.7;
    font-weight: 600;
    letter-spacing: 2px;
}

/* ================================================================
   PÁGINAS LEGALES
   ================================================================ */

.legal-page {
    background-color: var(--color-background);
    min-height: 100vh;
}

.legal-page__content {
    max-width: 860px;
    margin: 0 auto;
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.legal-page__meta {
    color: var(--color-text-light);
    font-size: var(--font-size-small);
    margin-bottom: var(--spacing-lg);
}

.legal-page h2 {
    color: var(--color-secondary);
    font-size: var(--font-size-h3);
    margin-top: var(--spacing-xl);
}

.legal-page p,
.legal-page li {
    font-size: var(--font-size-base);
    color: var(--color-text);
    line-height: 1.7;
}

.legal-page ul {
    padding-left: var(--spacing-lg);
}

.legal-page__back {
    margin-top: var(--spacing-xl);
    display: inline-block;
    font-weight: 700;
    color: var(--color-secondary);
}

/* Desktop general improvements */
@media (min-width: 1024px) {
    :root {
        --font-size-h1: 3rem;
        --font-size-h2: 2.4rem;
        --font-size-h3: 1.8rem;
    }

    .benefits {
        grid-template-columns: repeat(3, 1fr);
    }

    .testimonials__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .section__title {
        font-size: 2.8rem;
    }

    .cta-button--large {
        padding: var(--spacing-lg) var(--spacing-2xl);
        font-size: 1.2rem;
    }
}

/* ================================================================
   RESPONSIVE MOBILE
   ================================================================ */

@media (max-width: 768px) {
    :root {
        --font-size-h1: 1.8rem;
        --font-size-h2: 1.5rem;
        --font-size-h3: 1.2rem;
        --spacing-2xl: 2rem;
    }
    
    .hero {
        padding: 0;
    }
    
    .hero__content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .hero__headline {
        font-size: var(--font-size-h2);
    }
    
    .hero__subheadline {
        font-size: var(--font-size-base);
    }
    
    .hero__price-badge {
        flex-direction: column;
        gap: var(--spacing-xs);
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .hero__price-amount {
        font-size: 1.5rem;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .benefits {
        grid-template-columns: 1fr;
    }
    
    .testimonials__grid {
        grid-template-columns: 1fr;
    }
    
    .pricing__content {
        grid-template-columns: 1fr;
    }
    
    .pricing__methods {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }

    .legal-page__content {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-base: 15px;
        --spacing-lg: 1.5rem;
        --spacing-md: 1rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero__headline {
        font-size: 1.75rem;
    }
    
    .hero__subheadline {
        font-size: var(--font-size-small);
    }
    
    .hero__price-amount {
        font-size: 1.35rem;
    }
    
    .cta-button {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .cta-button--large {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .pricing__amount {
        font-size: 2rem;
    }
    
    .payment-method__logo {
        height: 32px;
    }
}

/* ================================================================
   UTILITIES
   ================================================================ */

.highlight {
    color: var(--color-secondary);
}

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }