/* ============================================
   INDUNNOVA - Estilos Corporativos
   Enfoque: Consultoria + Software para MiPymes
   Colores corporativos: Turquesa (#0E827C), Naranja (#F5A623),
   Amarillo (#F8E71C), Verde (#7ED321)
   ============================================ */

/* Variables CSS */
:root {
    --color-primary: #0E827C;
    --color-primary-dark: #0a6b66;
    --color-primary-light: #12a49c;
    --color-secondary: #1B1B1B;
    --color-accent: #F5A623;
    --color-accent-dark: #d9911c;
    --color-accent-glow: rgba(245, 166, 35, 0.3);
    --color-yellow: #F8E71C;
    --color-green: #7ED321;
    --color-success: #7ED321;
    --color-danger: #ef4444;
    --color-warning: #F5A623;
    --color-white: #FFFFFF;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-400: #94a3b8;
    --color-gray-600: #475569;
    --color-background: #f8fafc;

    --font-family: 'DM Sans', 'Poppins', sans-serif;
    --font-family-heading: 'Space Grotesk', 'Poppins', sans-serif;
    --font-size-base: 16px;

    --transition-fast: 0.3s ease;
    --transition-normal: 0.5s ease;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
}

/* Reset y Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-family);
    color: var(--color-primary);
    background-color: var(--color-white);
    line-height: 1.7;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   HEADER / NAVEGACION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-fast);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav__logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-family: var(--font-family-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 2px;
}

.logo-img {
    height: 50px;
    width: auto;
}

.footer__logo {
    height: 60px;
    width: auto;
    margin-bottom: 1rem;
}

.nav__menu {
    display: flex;
    align-items: center;
}

.nav__list {
    display: flex;
    gap: 2rem;
}

.nav__link {
    font-weight: 500;
    color: var(--color-primary);
    padding: 0.5rem 0;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-fast);
}

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

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

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown__toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.dropdown__arrow {
    font-size: 0.6rem;
    transition: transform var(--transition-fast);
}

.dropdown:hover .dropdown__arrow {
    transform: rotate(180deg);
}

.dropdown__menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background-color: var(--color-white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
}

.dropdown:hover .dropdown__menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown__menu li a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--color-primary);
    transition: all var(--transition-fast);
}

.dropdown__menu li a:hover {
    background-color: var(--color-background);
    color: var(--color-accent);
}

/* Mobile Navigation Toggle */
.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.nav__toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav__close {
    display: none;
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2rem;
    cursor: pointer;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--color-primary);
    overflow: hidden;
    padding-top: 80px;
}

.hero__overlay {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 70%, rgba(249, 115, 22, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 30%, rgba(234, 179, 8, 0.05) 0%, transparent 50%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--color-white);
    padding: 2rem 0;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(249, 115, 22, 0.15);
    border: 1px solid rgba(249, 115, 22, 0.3);
    color: var(--color-accent);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero__title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero__title .highlight {
    background: linear-gradient(135deg, var(--color-accent), var(--color-warning));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__description {
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    color: var(--color-gray-400);
}

.hero__description strong {
    color: var(--color-white);
}

.hero__buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.hero__tagline {
    font-size: 0.95rem;
    color: var(--color-gray-400);
    font-style: italic;
}

/* ============================================
   BOTONES
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-white);
}

.btn--primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 15px 30px var(--color-accent-glow);
}

.btn--secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn--secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn--large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

.btn--full {
    width: 100%;
}

.whatsapp-icon {
    width: 20px;
    height: 20px;
}

/* ============================================
   SECCIONES GENERALES
   ============================================ */
.section__header {
    text-align: center;
    margin-bottom: 3rem;
}

.section__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.section__subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   PROBLEMAS SECTION
   ============================================ */
.problems {
    padding: 6rem 0;
    background-color: var(--color-white);
}

.problems__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.problem__card {
    background: var(--color-gray-100);
    padding: 2rem;
    border-radius: var(--border-radius-xl);
    border-left: 4px solid var(--color-danger);
    transition: all var(--transition-fast);
}

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

.problem__icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.problem__icon svg {
    width: 28px;
    height: 28px;
}

.problem__icon--time {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
}

.problem__icon--blind {
    background: rgba(234, 179, 8, 0.1);
    color: var(--color-warning);
}

.problem__icon--error {
    background: rgba(249, 115, 22, 0.1);
    color: var(--color-accent);
}

.problem__icon--money {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.problem__card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-primary);
}

.problem__card p {
    color: var(--color-gray-600);
    font-size: 0.95rem;
}

.problems__cta {
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    padding: 2rem;
    border-radius: var(--border-radius-xl);
    color: var(--color-white);
}

.problems__cta p {
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto;
}

/* ============================================
   SERVICIOS
   ============================================ */
.services {
    padding: 6rem 0;
    background-color: var(--color-background);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service__card {
    background-color: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
    border: 1px solid var(--color-gray-200);
}

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

.service__card--featured {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    border: none;
}

.service__card--featured .service__icon {
    background: rgba(249, 115, 22, 0.2);
}

.service__card--featured .service__icon svg {
    color: var(--color-accent);
}

.service__card--featured .service__title {
    color: var(--color-white);
}

.service__card--featured .service__description {
    color: var(--color-gray-400);
}

.service__card--featured .service__features li {
    color: rgba(255, 255, 255, 0.9);
}

.service__card--featured .service__features li::before {
    color: var(--color-success);
}

.service__icon {
    width: 60px;
    height: 60px;
    background-color: rgba(249, 115, 22, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service__icon svg {
    width: 30px;
    height: 30px;
    color: var(--color-accent);
}

.service__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.service__description {
    color: var(--color-gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.service__features {
    list-style: none;
}

.service__features li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-gray-600);
}

.service__features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

.service__link {
    color: var(--color-accent);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.service__link:hover {
    color: var(--color-accent-dark);
    gap: 0.75rem;
}

/* ============================================
   MODELO DE NEGOCIO
   ============================================ */
.model {
    padding: 6rem 0;
    background-color: var(--color-white);
}

.model__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.model__item {
    padding: 2rem;
    background: var(--color-background);
    border-radius: var(--border-radius-xl);
    transition: all var(--transition-fast);
}

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

.model__number {
    font-family: var(--font-family-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.3;
    margin-bottom: 1rem;
}

.model__item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-primary);
}

.model__item p {
    color: var(--color-gray-600);
    line-height: 1.7;
}

.model__item p strong {
    color: var(--color-primary);
}

/* ============================================
   OBJECIONES SECTION
   ============================================ */
.objections {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

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

.objections .section__subtitle {
    color: var(--color-gray-200);
}

.objections__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.objection__card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.objection__card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

.objection__header {
    background: rgba(239, 68, 68, 0.2);
    padding: 1rem 1.5rem;
}

.objection__myth {
    color: var(--color-white);
    font-weight: 600;
    font-size: 1rem;
}

.objection__myth::before {
    content: '"';
}

.objection__myth::after {
    content: '"';
}

.objection__reality {
    padding: 1.5rem;
    color: var(--color-gray-200);
    font-size: 0.95rem;
    line-height: 1.7;
}

.objection__reality strong {
    color: var(--color-success);
    display: block;
    margin-bottom: 0.5rem;
}

/* ============================================
   CASOS DE EXITO
   ============================================ */
.cases {
    padding: 6rem 0;
    background-color: var(--color-background);
}

.cases__logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--color-primary);
    border-radius: var(--border-radius-xl);
}

.case__logo {
    color: rgba(255, 255, 255, 0.6);
    font-size: 1rem;
    font-weight: 600;
}

.cases__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.case__card {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    transition: all var(--transition-fast);
    border: 1px solid var(--color-gray-200);
}

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

.case__content {
    padding: 2rem;
}

.case__tag {
    display: inline-block;
    background: rgba(249, 115, 22, 0.1);
    color: var(--color-accent);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.case__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.case__description {
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.case__result {
    background: var(--color-gray-100);
    padding: 1rem;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    color: var(--color-gray-600);
}

.case__result strong {
    color: var(--color-success);
}

/* ============================================
   RECURSO GRATUITO SECTION
   ============================================ */
.resource {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
}

.resource__content {
    max-width: 700px;
    margin: 0 auto;
}

.resource__text {
    text-align: center;
    color: var(--color-white);
}

.resource__badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

.resource__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.resource__description {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.resource__list {
    list-style: none;
    text-align: left;
    max-width: 400px;
    margin: 0 auto 2rem;
}

.resource__list li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.resource__list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    font-weight: 700;
}

.resource .btn--primary {
    background: var(--color-white);
    color: var(--color-accent);
}

.resource .btn--primary:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta {
    padding: 5rem 0;
    background: var(--color-primary);
}

.cta__content {
    text-align: center;
    color: var(--color-white);
}

.cta__title {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta__description {
    font-size: 1.125rem;
    color: var(--color-gray-400);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta__buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   CONTACTO
   ============================================ */
.contact {
    padding: 6rem 0;
    background-color: var(--color-white);
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact__item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact__icon {
    width: 50px;
    height: 50px;
    background: rgba(249, 115, 22, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact__icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent);
}

.contact__text h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--color-primary);
}

.contact__text a,
.contact__text p {
    color: var(--color-gray-600);
}

.contact__text a:hover {
    color: var(--color-accent);
}

.contact__promise {
    background: var(--color-gray-100);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--color-success);
}

.contact__promise p {
    color: var(--color-gray-600);
    font-size: 0.95rem;
    line-height: 1.7;
}

.contact__promise strong {
    color: var(--color-success);
}

/* Formulario */
.contact__form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form__group input,
.form__group textarea,
.form__group select {
    width: 100%;
    padding: 1rem;
    font-family: var(--font-family);
    font-size: 1rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-fast);
    background-color: var(--color-background);
}

.form__group input:focus,
.form__group textarea:focus,
.form__group select:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-white);
    box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.1);
}

.form__group textarea {
    resize: vertical;
    min-height: 120px;
}

.form__group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1rem;
    padding-right: 2.5rem;
}

.contact__form .btn--primary {
    margin-top: 0.5rem;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 4rem 0 2rem;
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer__brand .logo-text {
    color: var(--color-white);
    margin-bottom: 1rem;
    display: block;
}

.footer__brand p {
    color: var(--color-gray-400);
    max-width: 250px;
}

.footer__links h4,
.footer__social h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.footer__links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer__links a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    color: var(--color-accent);
}

.social__links {
    display: flex;
    gap: 1rem;
}

.social__links a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social__links a:hover {
    background-color: var(--color-accent);
}

.social__links svg {
    width: 20px;
    height: 20px;
}

.footer__bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

.footer__tagline {
    margin-top: 0.5rem;
    font-style: italic;
}

/* ============================================
   WHATSAPP FLOATING BUTTON
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: all var(--transition-fast);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.whatsapp-float svg {
    width: 30px;
    height: 30px;
    fill: var(--color-white);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media screen and (max-width: 968px) {
    .nav__toggle {
        display: flex;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: var(--color-white);
        box-shadow: var(--shadow-xl);
        padding: 5rem 2rem 2rem;
        transition: right var(--transition-fast);
        flex-direction: column;
        align-items: flex-start;
    }

    .nav__menu.active {
        right: 0;
    }

    .nav__close {
        display: block;
    }

    .nav__list {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }

    .nav__item {
        width: 100%;
    }

    .nav__link {
        display: block;
        padding: 1rem 0;
        border-bottom: 1px solid var(--color-gray-200);
    }

    .dropdown__menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 1rem;
        display: none;
    }

    .dropdown.active .dropdown__menu {
        display: block;
    }

    .service__card--featured {
        grid-column: span 1;
    }

    .contact__grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .footer__content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

/* Mobile */
@media screen and (max-width: 640px) {
    .hero__buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero__buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    .problems__grid,
    .services__grid,
    .cases__grid,
    .model__grid,
    .objections__grid {
        grid-template-columns: 1fr;
    }

    .cases__logos {
        gap: 1.5rem;
    }

    .case__logo {
        font-size: 0.875rem;
    }

    .cta__buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta__buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer__brand p {
        max-width: 100%;
    }

    .social__links {
        justify-content: center;
    }

    .whatsapp-float {
        bottom: 1rem;
        right: 1rem;
        width: 50px;
        height: 50px;
    }

    .whatsapp-float svg {
        width: 25px;
        height: 25px;
    }
}

/* Animaciones */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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