:root {
    /* Color Palette - Neuroalquimia Premium */
    --color-bg: #05070a;
    --color-surface: #0f1218;
    --color-primary: #10b981;
    /* Emerald/Green transition */
    --color-primary-dark: #065f46;
    --color-accent: #fbbf24;
    /* Gold/Amber for highlights */
    --color-text: #f9fafb;
    --color-text-muted: #9ca3af;
    --color-white: #ffffff;

    /* Typography */
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;

    /* Spacing */
    --section-padding: 100px 0;
    --container-width: 1100px;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography Defaults */
h1,
h2,
h3 {
    font-family: var(--font-serif);
    line-height: 1.2;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 18px 36px;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-bg);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.5);
}

.btn-glow {
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.2);
}

.btn-glow::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
}

.btn-glow:hover::after {
    opacity: 1;
}

/* Hero Section Redesign */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    background: radial-gradient(circle at top right, rgba(16, 185, 129, 0.08), transparent),
        radial-gradient(circle at bottom left, rgba(6, 95, 70, 0.15), transparent),
        var(--color-bg);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.eyebrow {
    display: block;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 4px;
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.headline {
    font-size: clamp(2.5rem, 6vw, 4.2rem);
    font-weight: 700;
    margin-bottom: 24px;
    line-height: 1.1;
}

.subheadline {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--color-text-muted);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-bullets {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 48px;
}

.bullet {
    display: flex;
    align-items: center;
    gap: 15px;
    font-weight: 500;
}

.icon-svg {
    color: var(--color-primary);
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
}

.card-icon-svg {
    width: 48px;
    height: 48px;
    margin: 0 auto 20px;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 0 10px rgba(16, 185, 129, 0.2));
}

.method-card:hover .card-icon-svg {
    transform: scale(1.1);
    transition: var(--transition);
}

.hero-visual {
    perspective: 1000px;
    display: flex;
    justify-content: center;
}

.ebook-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    transform: rotateY(-15deg) rotateX(5deg);
    transition: var(--transition);
    animation: float 6s ease-in-out infinite;
}

.ebook-main {
    width: 100%;
    border-radius: 4px 15px 15px 4px;
    box-shadow: 20px 20px 60px rgba(0, 0, 0, 0.8);
    display: block;
}

.ebook-shadow {
    position: absolute;
    bottom: -40px;
    left: 10%;
    width: 80%;
    height: 20px;
    background: rgba(0, 0, 0, 0.5);
    filter: blur(20px);
    border-radius: 50%;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotateY(-15deg) rotateX(5deg);
    }

    50% {
        transform: translateY(-20px) rotateY(-10deg) rotateX(2deg);
    }
}

.nav-minimal {
    position: absolute;
    top: 40px;
    left: 0;
    width: 100%;
    z-index: 10;
}

.brand {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-primary);
    font-weight: 600;
}

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 1s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Footer */
.footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.section {
    padding: var(--section-padding);
}

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

.section-title {
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-title h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 20px;
}

.section-title p {
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

/* Comparison Section */
.comparison-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 40px;
}

.comparison-card {
    background: var(--color-surface);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.comparison-card h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.comparison-card ul {
    list-style: none;
}

.comparison-card ul li {
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
    color: var(--color-text-muted);
}

.comparison-card.common ul li::before {
    content: "✕";
    position: absolute;
    left: 0;
    color: #ef4444;
}

.comparison-card.premium {
    border: 1px solid var(--color-primary);
    background: linear-gradient(145deg, #0f1218, #05070a);
    position: relative;
}

.comparison-card.premium h3 {
    color: var(--color-primary);
}

.comparison-card.premium ul li {
    color: var(--color-text);
}

.comparison-card.premium ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

.badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--color-primary);
    color: var(--color-bg);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
}

/* Method Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.method-card {
    background: var(--color-surface);
    padding: 32px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    text-align: center;
}

.method-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.1);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: inline-block;
}

.method-card h3 {
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.method-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* Snippets Proof */
.snippets-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.snippet-card {
    background: #fff;
    padding: 30px;
    border-radius: 4px;
    box-shadow: 10px 10px 0px var(--color-primary);
    position: relative;
}

.snippet-text {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: var(--color-bg);
    font-style: italic;
}

/* Checklist */
.checklist-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.check-item {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--color-surface);
    padding: 20px;
    border-radius: 12px;
    font-weight: 600;
}

.check-icon {
    color: var(--color-primary);
    font-size: 1.2rem;
}

/* Transformation Section */
.transformation-box {
    background: var(--color-surface);
    padding: 60px;
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.t-col {
    flex: 1;
}

.t-col h3 {
    font-size: 2rem;
    margin-bottom: 30px;
    text-align: center;
}

.t-list {
    list-style: none;
}

.t-list li {
    margin-bottom: 15px;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 500;
}

.t-list.before li {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    text-decoration: line-through;
}

.t-list.after li {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-primary);
}

.t-divider {
    font-size: 3rem;
    color: var(--color-primary);
}

/* Entrega */
.entrega-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.mockup-img {
    width: 100%;
    max-width: 500px;
    filter: drop-shadow(0 20px 50px rgba(0, 0, 0, 0.5));
    transition: var(--transition);
}

.mockup-img:hover {
    transform: rotateY(-10deg) rotateX(5deg);
}

.real-ebook {
    border-radius: 4px 15px 15px 4px;
    box-shadow: 10px 10px 40px rgba(0, 0, 0, 0.4);
}

.entrega-list {
    list-style: none;
    margin-top: 30px;
}

.entrega-list li {
    margin-bottom: 20px;
    padding-left: 30px;
    position: relative;
}

.entrega-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* Autor */
.autor-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: var(--color-surface);
    padding: 60px;
    border-radius: 30px;
}

.autor-title {
    color: var(--color-accent);
    font-weight: 700;
    margin-bottom: 20px;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.profile-img {
    width: 100%;
    border-radius: 20px;
    border: 4px solid var(--color-primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

/* Oferta */
.pricing-card {
    background: var(--color-surface);
    max-width: 500px;
    margin: 0 auto;
    padding: 60px;
    border-radius: 30px;
    text-align: center;
    border: 2px solid var(--color-primary);
    position: relative;
    overflow: hidden;
}

.pricing-header h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.pricing-price {
    margin: 40px 0;
}

.currency {
    font-size: 1.5rem;
    vertical-align: top;
}

.amount {
    font-size: 5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.pricing-timer {
    background: rgba(251, 191, 36, 0.1);
    color: var(--color-accent);
    padding: 10px;
    border-radius: 8px;
    font-weight: 600;
    margin-bottom: 30px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 40px;
}

.pricing-features li {
    margin-bottom: 15px;
}

.btn-block {
    display: block;
    width: 100%;
}

.scarcity-text {
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* FAQ Accordion */
.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    margin-bottom: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 24px;
    background: var(--color-surface);
    color: var(--color-text);
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.accordion-header:hover {
    background: rgba(255, 255, 255, 0.03);
}

.accordion-header::after {
    content: "+";
    font-size: 1.5rem;
    color: var(--color-primary);
}

.accordion-item.active .accordion-header::after {
    content: "-";
}

.accordion-body {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease-out;
    background: var(--color-bg);
}

.accordion-item.active .accordion-body {
    padding: 24px;
    max-height: 200px;
}

.cta-final {
    padding: 120px 0;
    background: linear-gradient(to bottom, transparent, rgba(16, 185, 129, 0.05));
}

.cta-final h2 {
    font-size: 3rem;
    margin-bottom: 40px;
}

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-content {
        order: 2;
    }

    .hero-visual {
        order: 1;
        max-width: 300px;
        margin: 0 auto;
    }

    .hero-bullets {
        align-items: center;
    }
}

@media (max-width: 768px) {
    .comparison-container {
        grid-template-columns: 1fr;
    }

    .checklist-grid {
        grid-template-columns: 1fr;
    }

    .transformation-box {
        flex-direction: column;
        padding: 40px 20px;
    }

    .t-divider {
        transform: rotate(90deg);
    }

    .entrega-grid,
    .autor-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 30px;
    }

    .pricing-card {
        padding: 40px 20px;
    }

    /* Sticky Mobile CTA Bar */
    .sticky-cta-mobile {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background: rgba(15, 18, 24, 0.95);
        backdrop-filter: blur(10px);
        border-top: 1px solid var(--color-primary);
        padding: 12px 20px;
        z-index: 1000;
        display: none;
        /* Hidden by default */
        box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.5);
    }

    .sticky-cta-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 600px;
        margin: 0 auto;
    }

    .sticky-cta-text {
        display: flex;
        flex-direction: column;
    }

    .scarcity-label {
        font-size: 0.7rem;
        text-transform: uppercase;
        color: var(--color-accent);
        font-weight: 700;
        letter-spacing: 1px;
    }

    .sticky-timer {
        font-family: var(--font-sans);
        font-weight: 700;
        font-size: 1.1rem;
        color: var(--color-white);
    }

    .btn-sm {
        padding: 10px 20px;
        font-size: 0.85rem;
    }

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

        body {
            padding-bottom: 70px;
            /* Add space for the bar */
        }
    }

    .cta-final h2 {
        font-size: 2rem;
    }
}