/* ==========================================================================
   ETZIEL AI - Premium Landing Page
   Paleta: Azul (#5B8CFF) → Morado (#7C3AED) sobre fondo oscuro (#0B0F1A)
   Diseño limpio enfocado en conversión y beneficios
   ========================================================================== */

/* ---------- Variables ---------- */
:root {
    --color-bg-primary: #0B0F1A;
    --color-bg-secondary: #121826;
    --color-bg-card: rgba(18, 24, 38, 0.7);

    --color-primary: #5B8CFF;
    --color-secondary: #7C3AED;
    --color-accent: #06B6D4;

    --gradient-primary: linear-gradient(135deg, #5B8CFF, #7C3AED);
    --gradient-primary-hover: linear-gradient(135deg, #4A7AEB, #6D28D9);
    --gradient-text: linear-gradient(135deg, #5B8CFF, #7C3AED, #06B6D4);
    --gradient-bg: radial-gradient(ellipse at center, rgba(91, 140, 255, 0.1) 0%, transparent 70%);

    --color-text: #E5E7EB;
    --color-text-secondary: #9CA3AF;
    --color-text-muted: #6B7280;

    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(255, 255, 255, 0.12);
    --color-border-active: rgba(91, 140, 255, 0.4);

    --color-whatsapp: #25D366;

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --container-max: 1200px;
    --header-height: 80px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(91, 140, 255, 0.12);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ==========================================================================
   UTILIDADES
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 72px;
}

.section-badge {
    display: inline-flex;
    padding: 8px 18px;
    background: rgba(91, 140, 255, 0.08);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(1.875rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 18px;
    letter-spacing: -0.025em;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    line-height: 1.75;
}

/* ==========================================================================
   BOTONES
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition);
    cursor: pointer;
    border: none;
    font-size: 0.938rem;
    white-space: nowrap;
}

/* Primario */
.btn--primary {
    background: var(--gradient-primary);
    color: #fff;
    padding: 14px 28px;
    box-shadow: 0 4px 20px rgba(91, 140, 255, 0.3);
}

.btn--primary:hover {
    background: var(--gradient-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(91, 140, 255, 0.4);
}

/* Outline */
.btn--outline {
    background: rgba(255, 255, 255, 0.03);
    color: var(--color-text);
    padding: 14px 28px;
    border: 1px solid var(--color-border);
}

.btn--outline:hover {
    border-color: var(--color-primary);
    background: rgba(91, 140, 255, 0.08);
    transform: translateY(-2px);
}

/* WhatsApp - integrado con la paleta, no verde brillante aislado */
.btn--whatsapp {
    background: rgba(37, 211, 102, 0.12);
    color: var(--color-whatsapp);
    padding: 14px 28px;
    border: 1px solid rgba(37, 211, 102, 0.25);
    font-weight: 600;
}

.btn--whatsapp:hover {
    background: rgba(37, 211, 102, 0.2);
    border-color: rgba(37, 211, 102, 0.4);
    transform: translateY(-2px);
}

/* Tamaños */
.btn--lg { padding: 16px 32px; font-size: 1rem; }
.btn--xl { padding: 18px 40px; font-size: 1.0625rem; }

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    transition: all var(--transition);
    background: rgba(11, 15, 26, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo__icon {
    font-size: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navegación */
.nav {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav__list {
    display: flex;
    gap: 32px;
}

.nav__link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: width var(--transition);
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-text);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

.nav__cta {
    padding: 10px 20px !important;
    font-size: 0.813rem !important;
}

/* Hamburguesa */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 28px;
    padding: 4px 0;
}

.hamburger__line {
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition);
}

.hamburger.active .hamburger__line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .hamburger__line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger__line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero__gradient {
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 120%;
    height: 90%;
    background: var(--gradient-bg);
}

.hero__container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    padding: 80px 24px;
}

.hero__badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(91, 140, 255, 0.1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 28px;
}

.hero__title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: -0.035em;
    margin-bottom: 24px;
}

.hero__subtitle {
    font-size: clamp(1rem, 1.8vw, 1.1875rem);
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: 40px;
    max-width: 520px;
}

.hero__buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

.hero__stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.hero__stat {
    display: flex;
    flex-direction: column;
}

.hero__stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__stat-label {
    font-size: 0.813rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.hero__stat-divider {
    width: 1px;
    height: 44px;
    background: var(--color-border);
}

/* ==========================================================================
   CHAT CARD (Hero Visual)
   Muestra un resultado real: conversación fluida sin intervención humana
   ========================================================================== */
.hero__visual {
    display: flex;
    justify-content: center;
}

.chat-card {
    width: 100%;
    max-width: 380px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.chat-card__header {
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--color-border);
}

.chat-card__title {
    font-size: 0.938rem;
    font-weight: 600;
    color: var(--color-text);
}

/* Área de mensajes */
.chat-card__messages {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 380px;
    overflow-y: auto;
}

/* Mensaje individual */
.msg {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    line-height: 1.55;
}

.msg p {
    margin: 0;
}

/* Mensajes entrantes (del cliente) */
.msg--incoming {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-top-left-radius: 4px;
    color: var(--color-text);
}

/* Mensajes salientes (del sistema) */
.msg--outgoing {
    align-self: flex-end;
    background: rgba(91, 140, 255, 0.12);
    border: 1px solid rgba(91, 140, 255, 0.18);
    border-top-right-radius: 4px;
    color: var(--color-text);
}

/* Footer del chat */
.chat-card__footer {
    padding: 12px 20px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.chat-card__label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ==========================================================================
   BENEFICIOS
   ========================================================================== */
.benefits {
    padding: 120px 0;
}

.benefits__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.benefit-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all var(--transition);
    position: relative;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition);
}

.benefit-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.benefit-card:hover::before {
    opacity: 1;
}

.benefit-card__icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(91, 140, 255, 0.08);
    border: 1px solid rgba(91, 140, 255, 0.12);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    color: var(--color-primary);
}

.benefit-card__title {
    font-size: 1.063rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.benefit-card__desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ==========================================================================
   SERVICIOS
   ========================================================================== */
.services {
    padding: 120px 0;
    background: var(--color-bg-secondary);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    transition: all var(--transition);
    position: relative;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.service-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.service-card__badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 6px 14px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    font-size: 0.688rem;
    font-weight: 700;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.service-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(91, 140, 255, 0.08);
    border: 1px solid rgba(91, 140, 255, 0.12);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    color: var(--color-primary);
}

.service-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card__desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.service-card__features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.service-card__features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.service-card__features li::before {
    content: '✓';
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.8rem;
}

.service-card__btn {
    width: 100%;
}

/* ==========================================================================
   CÓMO FUNCIONA
   ========================================================================== */
.how-it-works {
    padding: 120px 0;
}

.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
}

/* Línea conectora */
.steps::before {
    content: '';
    position: absolute;
    top: 36px;
    left: 12.5%;
    right: 12.5%;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0.15;
}

.step {
    text-align: center;
    position: relative;
}

.step__number {
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(180deg, rgba(91, 140, 255, 0.15), rgba(124, 58, 237, 0.05));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 16px;
}

.step__title {
    font-size: 1.063rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.step__desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 240px;
    margin: 0 auto;
}

/* ==========================================================================
   TESTIMONIOS
   ========================================================================== */
.testimonials {
    padding: 120px 0;
    background: var(--color-bg-secondary);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all var(--transition);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.testimonial-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.testimonial-card__stars {
    display: flex;
    gap: 3px;
    margin-bottom: 20px;
    font-size: 1rem;
}

.testimonial-card__text {
    font-size: 0.938rem;
    line-height: 1.75;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}

.testimonial-card__text strong {
    color: var(--color-text);
}

.testimonial-card__author {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.testimonial-card__avatar {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.875rem;
    color: #fff;
    flex-shrink: 0;
}

.testimonial-card__name {
    font-size: 0.938rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.testimonial-card__role {
    font-size: 0.813rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   PRECIOS
   ========================================================================== */
.pricing {
    padding: 120px 0;
}

.pricing__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    transition: all var(--transition);
    position: relative;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

/* Plan destacado */
.pricing-card--featured {
    border-color: var(--color-border-active);
    background: linear-gradient(180deg, rgba(91, 140, 255, 0.06), var(--color-bg-card));
    box-shadow: var(--shadow-glow);
    transform: scale(1.04);
}

.pricing-card--featured:hover {
    transform: scale(1.04) translateY(-8px);
}

.pricing-card__badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    font-size: 0.688rem;
    font-weight: 700;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(91, 140, 255, 0.3);
}

.pricing-card__header {
    text-align: center;
    margin-bottom: 28px;
}

.pricing-card__name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.pricing-card__desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.pricing-card__price {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--color-border);
}

.pricing-card__currency {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    vertical-align: top;
    line-height: 2.2;
}

.pricing-card__amount {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    color: var(--color-text);
    line-height: 1;
}

.pricing-card--featured .pricing-card__amount {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-card__period {
    font-size: 1rem;
    color: var(--color-text-muted);
}

.pricing-card__features {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 36px;
}

.pricing-card__features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.pricing-card__features li svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.pricing-card__feature--disabled {
    opacity: 0.35;
}

.pricing-card__feature--disabled svg {
    color: var(--color-text-muted);
}

.pricing-card__btn {
    width: 100%;
}

/* ==========================================================================
   CTA FINAL
   ========================================================================== */
.cta {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.cta__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.cta__gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(91, 140, 255, 0.06), rgba(124, 58, 237, 0.1));
}

.cta__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta__title {
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.025em;
}

.cta__subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: 40px;
}

.cta__note {
    margin-top: 24px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    padding: 80px 0 40px;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer__brand {
    max-width: 300px;
}

.logo--footer {
    margin-bottom: 16px;
}

.footer__desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: 24px;
}

.footer__social {
    display: flex;
    gap: 12px;
}

.footer__social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition);
}

.footer__social-link:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(91, 140, 255, 0.08);
    transform: translateY(-3px);
}

.footer__title {
    font-size: 0.938rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__list a {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer__list a:hover {
    color: var(--color-text);
}

.footer__bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer__copyright {
    font-size: 0.813rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   BOTÓN FLOTANTE DE WHATSAPP
   Más discreto, integrado con la paleta
   ========================================================================== */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 211, 102, 0.9);
    border-radius: 50%;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
    color: #fff;
    z-index: 999;
    transition: all var(--transition);
}

.whatsapp-float:hover {
    transform: scale(1.08);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.4);
}

/* ==========================================================================
   ANIMACIONES
   ========================================================================== */
.fade-in,
.fade-in-delay,
.fade-in-delay-2,
.fade-in-delay-3 {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-delay { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

.fade-in.visible,
.fade-in-delay.visible,
.fade-in-delay-2.visible,
.fade-in-delay-3.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE - TABLETS (max 1024px)
   ========================================================================== */
@media (max-width: 1024px) {
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 56px;
    }

    .hero__subtitle {
        margin: 0 auto 40px;
    }

    .hero__buttons {
        justify-content: center;
    }

    .hero__stats {
        justify-content: center;
    }

    .hero__visual {
        order: -1;
    }

    .benefits__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 48px;
    }

    .steps::before {
        display: none;
    }

    .testimonials__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-card--featured {
        transform: scale(1);
    }

    .pricing-card--featured:hover {
        transform: translateY(-8px);
    }

    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

/* ==========================================================================
   RESPONSIVE - MÓVIL (max 768px)
   ========================================================================== */
@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(11, 15, 26, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        padding: 40px 24px 32px;
        gap: 24px;
        border-top: 1px solid var(--color-border);
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
    }

    .nav.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }

    .nav__list {
        flex-direction: column;
        gap: 20px;
        text-align: center;
        width: 100%;
    }

    .nav__link {
        font-size: 1.125rem;
        display: block;
        padding: 8px 0;
    }

    .nav__cta {
        width: 100%;
        justify-content: center;
        margin-top: auto;
    }

    .hamburger {
        display: flex;
    }

    /* Hero en móvil */
    .hero {
        min-height: auto;
        padding-bottom: 60px;
    }

    .hero__container {
        padding: 60px 24px;
    }

    .hero__badge {
        font-size: 0.8rem;
    }

    .hero__title {
        font-size: clamp(2rem, 8vw, 2.5rem);
    }

    .hero__buttons {
        flex-direction: column;
    }

    .hero__buttons .btn {
        width: 100%;
    }

    .hero__stats {
        flex-direction: column;
        gap: 16px;
    }

    .hero__stat-divider {
        width: 40px;
        height: 1px;
    }

    /* Chat card en móvil */
    .hero__visual {
        display: none;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .section-subtitle {
        font-size: 0.938rem;
    }

    .section-header {
        margin-bottom: 48px;
    }

    .benefits,
    .services,
    .how-it-works,
    .testimonials,
    .pricing,
    .cta {
        padding: 80px 0;
    }

    .benefits__grid,
    .services__grid,
    .steps,
    .testimonials__grid,
    .pricing__grid {
        grid-template-columns: 1fr;
    }

    .step {
        text-align: left;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .step__number {
        font-size: 2rem;
        margin-bottom: 0;
    }

    .step__desc {
        max-width: 100%;
        margin: 0;
    }

    .cta__title {
        font-size: 1.625rem;
    }

    .cta__subtitle {
        font-size: 1rem;
    }

    .cta .btn--xl {
        width: 100%;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer__brand {
        max-width: 100%;
    }

    .footer {
        padding: 60px 0 32px;
    }

    .whatsapp-float {
        width: 52px;
        height: 52px;
        bottom: 20px;
        right: 20px;
    }
}

/* ==========================================================================
   RESPONSIVE - MÓVIL PEQUEÑO (max 480px)
   ========================================================================== */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero__container {
        padding: 48px 16px;
    }

    .benefit-card,
    .service-card,
    .testimonial-card,
    .pricing-card {
        padding: 24px 20px;
    }

    .pricing-card__amount {
        font-size: 3rem;
    }
}