/* ========== RESET & BASE ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-text: #1a1a1a;
    --color-text-secondary: #555555;
    --color-text-muted: #888888;
    --color-accent: #1a1a1a;
    --color-accent-hover: #333333;
    --color-cta: #25D366;
    --color-cta-hover: #20bd5a;
    --color-border: #e5e5e5;
    --color-highlight-bg: #f5f5f0;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --max-width: 720px;
    --section-padding: 90px 0;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ========== LAYOUT ========== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

/* ========== HEADER ========== */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(250, 250, 250, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
}

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

.logo {
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--color-text);
}

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-accent);
    color: #fff;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    transition: background 0.2s, transform 0.2s;
}

.header-cta:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

/* ========== HERO ========== */
.hero {
    padding: 150px 0 90px;
    text-align: left;
    background: var(--color-bg);
}

/* WhatsApp floating logo */
.wa-float-wrap {
    margin-bottom: 28px;
}

.wa-float {
    width: 72px;
    height: 72px;
    animation: waFloat 3.5s ease-in-out infinite;
    filter: drop-shadow(0 6px 18px rgba(37, 211, 102, 0.4));
}

@keyframes waFloat {
    0%, 100% { transform: translateY(0px); }
    50%       { transform: translateY(-10px); }
}

.hero h1 {
    font-size: clamp(2.2rem, 6vw, 3.4rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
    color: var(--color-text);
}

.hero-tagline {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin: 0 0 20px;
    padding: 5px 14px;
    border: 1.5px solid var(--color-accent);
    border-radius: 100px;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 540px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

/* ========== BUTTONS ========== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--color-cta);
    color: #fff;
    padding: 15px 28px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 700;
    transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
    white-space: nowrap;
}

.btn-primary:hover {
    background: var(--color-cta-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.3);
}

.btn-primary svg,
.btn-secondary svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    min-width: 20px;
    min-height: 20px;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--color-text);
    padding: 15px 28px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    border: 2px solid var(--color-border);
    transition: border-color 0.25s, transform 0.25s;
    white-space: nowrap;
}

.btn-secondary:hover {
    border-color: var(--color-text);
    transform: translateY(-2px);
}

/* ========== HERO STATS ========== */
.hero-stats {
    display: flex;
    gap: 28px;
    margin-top: 36px;
    flex-wrap: wrap;
    padding-top: 28px;
    border-top: 1px solid var(--color-border);
}

.hero-stat {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.hero-stat strong {
    display: block;
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

/* ========== SECTION HEADINGS ========== */
.section-label {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 14px;
}

.section-title {
    font-size: clamp(1.5rem, 3.5vw, 2.1rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--color-text-secondary);
    max-width: 540px;
    line-height: 1.7;
    margin-bottom: 44px;
}

.section-cta {
    margin-top: 44px;
    display: flex;
    justify-content: center;
}

/* ========== POR QUÉ FUNCIONA — CARDS ========== */
.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 44px;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 32px 28px;
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    border-color: #ccc;
    transform: translateY(-4px);
    box-shadow: 0 10px 28px rgba(0,0,0,0.06);
}

.feature-icon { font-size: 1.9rem; margin-bottom: 16px; }

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 0.92rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ========== PROCESO — ICON GRID ========== */
.process-section {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 44px;
}

.process-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 24px 20px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    transition: border-color 0.3s, transform 0.3s;
}

.process-item:hover {
    border-color: #ccc;
    transform: translateY(-3px);
}

.process-item svg {
    color: var(--color-text);
    flex-shrink: 0;
}

.process-item span {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
}

/* ========== EL SISTEMA ========== */
.included-list { margin-top: 44px; }

.included-item {
    display: flex;
    gap: 14px;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    align-items: flex-start;
}

.included-item:last-child { border-bottom: none; }

.included-check {
    width: 22px;
    height: 22px;
    min-width: 22px;
    background: var(--color-text);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.7rem;
    margin-top: 3px;
}

.included-item p {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.6;
}

.included-item p strong { font-weight: 700; }
.included-item p span { color: var(--color-text-secondary); }

/* ========== ANTES / DESPUÉS ========== */
.comparison-section {
    background: var(--color-highlight-bg);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 44px;
}

.comparison-col {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 28px 24px;
}

.comparison-col h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 20px;
}

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

.comparison-col ul li {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    padding: 9px 0;
    padding-left: 24px;
    position: relative;
    line-height: 1.5;
    border-bottom: 1px solid var(--color-border);
}

.comparison-col ul li:last-child { border-bottom: none; }

.col-no li::before  { content: "✗"; position: absolute; left: 0; font-weight: 700; color: #ef4444; }
.col-yes li::before { content: "✓"; position: absolute; left: 0; font-weight: 700; color: #22c55e; }

/* ========== TESTIMONIOS ========== */
.testimonials-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 44px;
}

.testimonio-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px 28px;
    transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}

.testimonio-card:hover {
    border-color: #ccc;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    transform: translateY(-2px);
}

.testimonio-body { width: 100%; }

.testimonio-quote {
    font-size: 0.97rem;
    color: var(--color-text);
    line-height: 1.65;
    margin-bottom: 14px;
}

.testimonio-quote::before { content: '"'; font-weight: 700; color: var(--color-text-muted); }
.testimonio-quote::after  { content: '"'; font-weight: 700; color: var(--color-text-muted); }

.testimonio-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding-top: 14px;
    border-top: 1px solid var(--color-border);
}

.testimonio-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text);
}

.testimonio-role {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ========== FINAL CTA ========== */
.final-cta {
    text-align: center;
    padding: 110px 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.final-cta .section-title  { max-width: 520px; margin: 0 auto 14px; }
.final-cta .section-subtitle { max-width: 460px; margin: 0 auto 36px; }

.final-cta .btn-primary {
    font-size: 1.05rem;
    padding: 17px 36px;
}

.cta-note {
    margin-top: 14px;
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

/* ========== FOOTER ========== */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 36px 0;
    background: var(--color-bg);
}

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

.footer-text {
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.footer-tagline {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    margin-top: 3px;
}

/* ========== SCROLL ANIMATIONS ========== */
.js-ready .fade-up {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1);
}

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

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    :root { --section-padding: 60px 0; }

    .container { padding: 0 18px; }

    .hero { padding: 106px 0 56px; }
    .hero h1 { font-size: 2rem; }
    .hero-desc { font-size: 1rem; }

    .features-grid,
    .comparison-grid { grid-template-columns: 1fr; }

    .process-grid { grid-template-columns: 1fr 1fr; gap: 14px; }

    .hero-ctas { flex-direction: column; }

    .btn-primary,
    .btn-secondary { width: 100%; justify-content: center; padding: 14px 20px; }

    .hero-stats {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .section-subtitle { font-size: 0.95rem; }

    .footer .container {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .header-cta .hide-mobile { display: none; }

    .final-cta { padding: 72px 0; }
    .final-cta .btn-primary { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.75rem; }
    .hero-tagline { font-size: 0.75rem; }
    .process-grid { grid-template-columns: 1fr; }
    .hero-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
    .hero-stat strong { font-size: 1.1rem; }
    .feature-card { padding: 24px 20px; }
    .comparison-col { padding: 22px 18px; }
}