/* ========================================
   iSOLSA - Estilos CSS Optimizados
   Versión: 1.0.0
   ======================================== */

/* === VARIABLES CSS === */
:root {
    /* Colores Corporativos */
    --color-primary: #F7941D;
    --color-primary-dark: #D67A0F;
    --color-primary-light: #FFB84D;
    --color-secondary: #003D5C;
    --color-secondary-light: #0A5B7D;
    --color-accent: #FF6B35;
    
    /* Grises y Neutros */
    --color-bg-light: #F5F7FA;
    --color-bg-white: #FFFFFF;
    --color-text-dark: #1A202C;
    --color-text-body: #4A5568;
    --color-text-light: #718096;
    --color-border: #E2E8F0;
    
    /* Tipografía */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', var(--font-primary);
    
    /* Tamaños de Fuente */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --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);
    
    /* Bordes */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transiciones */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Contenedor */
    --container-max: 1200px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

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

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

a:hover {
    color: var(--color-primary-dark);
}

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

ul {
    list-style: none;
}

button {
    cursor: pointer;
    font-family: inherit;
}

/* === UTILIDADES === */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.text-highlight {
    color: var(--color-primary);
}

.center {
    text-align: center;
}

/* === NAVEGACIÓN === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 61, 92, 0.08);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: 0 2px 30px rgba(0, 61, 92, 0.15);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 1rem var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 45px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-menu a {
    color: var(--color-secondary);
    font-weight: 500;
    font-size: var(--text-sm);
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-base);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-menu a:hover {
    color: var(--color-primary);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--color-primary);
    color: white !important;
    padding: 0.75rem 1.5rem !important;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

/* === HERO === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(247, 148, 29, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(247, 148, 29, 0.1) 0%, transparent 50%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.5; }
}

.hero-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 4rem var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: white;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    animation: fadeInUp 0.8s ease-out;
}

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

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.stat-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--color-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

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

/* === BOTONES === */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--text-base);
    text-align: center;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 10px 30px rgba(247, 148, 29, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(247, 148, 29, 0.4);
    color: white;
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    color: white;
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: var(--text-lg);
}

.btn-block {
    width: 100%;
}

/* === SECCIONES === */
section {
    padding: 5rem 0;
}

.section-header {
    margin-bottom: var(--spacing-2xl);
}

.section-tag {
    display: inline-block;
    background: rgba(247, 148, 29, 0.1);
    color: var(--color-primary);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* === SOBRE NOSOTROS === */
.about {
    background: var(--color-bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.about-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    border: 1px solid var(--color-border);
}

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

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.about-card h3 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--text-xl);
}

.about-card p {
    color: var(--color-text-body);
    font-size: var(--text-base);
    margin: 0;
}

.value-proposition {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-2xl);
}

.value-proposition h3 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-secondary);
}

.value-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.value-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.check-icon {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.value-item p {
    margin: 0;
    color: var(--color-text-body);
}

/* === SERVICIOS === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 2px solid var(--color-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(247, 148, 29, 0.3);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card.featured {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.featured-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--color-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 700;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.service-card h3 {
    color: var(--color-secondary);
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-sm);
}

.service-card > p {
    color: var(--color-text-body);
    margin-bottom: var(--spacing-md);
}

.service-features {
    margin: var(--spacing-md) 0;
    padding-left: 0;
}

.service-features li {
    color: var(--color-text-body);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: var(--text-sm);
}

.service-features li::before {
    content: '→';
    color: var(--color-primary);
    position: absolute;
    left: 0;
    font-weight: 700;
}

.service-link {
    display: inline-block;
    color: var(--color-primary);
    font-weight: 600;
    margin-top: var(--spacing-md);
    transition: all var(--transition-base);
}

.service-link:hover {
    transform: translateX(5px);
}

/* === CASOS DE ÉXITO === */
.case-studies {
    background: var(--color-bg-light);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.case-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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

.case-header {
    margin-bottom: var(--spacing-md);
}

.case-header h3 {
    color: var(--color-secondary);
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-sm);
}

.case-tag {
    display: inline-block;
    background: rgba(247, 148, 29, 0.1);
    color: var(--color-primary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
}

.case-description {
    color: var(--color-text-body);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.case-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

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

.result-number {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--color-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.result-label {
    font-size: var(--text-xs);
    color: var(--color-text-light);
}

.cta-box {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    color: white;
}

.cta-box h3 {
    color: white;
    font-size: var(--text-3xl);
    margin-bottom: var(--spacing-md);
}

.cta-box p {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

/* === TESTIMONIOS === */
.testimonials {
    background: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background: var(--color-bg-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    position: relative;
}

.stars {
    color: var(--color-primary);
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-md);
}

.testimonial-text {
    font-size: var(--text-base);
    line-height: 1.8;
    color: var(--color-text-body);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.testimonial-author strong {
    display: block;
    color: var(--color-secondary);
    font-size: var(--text-base);
    margin-bottom: var(--spacing-xs);
}

.testimonial-author span {
    color: var(--color-text-light);
    font-size: var(--text-sm);
}

/* === PROCESO === */
.process {
    background: var(--color-bg-light);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    align-items: start;
}

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

.step-number {
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
}

.step-item h3 {
    color: var(--color-secondary);
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-sm);
}

.step-item p {
    color: var(--color-text-body);
    font-size: var(--text-sm);
    margin: 0;
}

.step-connector {
    display: none;
}

/* === CONTACTO === */
.contact {
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-info h2 {
    color: var(--color-secondary);
    font-size: var(--text-4xl);
    margin-bottom: var(--spacing-md);
}

.contact-intro {
    font-size: var(--text-lg);
    color: var(--color-text-body);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: white;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-item h4 {
    color: var(--color-secondary);
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    color: var(--color-text-body);
    margin: 0;
    line-height: 1.6;
}

.contact-item a {
    color: var(--color-text-body);
}

.contact-item a:hover {
    color: var(--color-primary);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--color-bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-secondary);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-3px);
}

.social-links svg {
    width: 20px;
    height: 20px;
}

/* === FORMULARIO === */
.contact-form-container {
    background: var(--color-bg-light);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.contact-form h3 {
    color: var(--color-secondary);
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-sm);
}

.form-subtitle {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    font-size: var(--text-sm);
}

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

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-secondary);
    font-size: var(--text-sm);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--text-base);
    transition: all var(--transition-base);
    background: white;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(247, 148, 29, 0.1);
}

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

.checkbox-group {
    margin: var(--spacing-lg) 0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--color-text-body);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 0.25rem;
}

.form-note {
    font-size: var(--text-xs);
    color: var(--color-text-light);
    margin-top: var(--spacing-md);
    text-align: center;
}

/* === FOOTER === */
.footer {
    background: var(--color-secondary);
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    max-width: 180px;
    margin-bottom: var(--spacing-md);
}

.footer-description {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    font-size: var(--text-sm);
}

.footer-legal {
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.6);
}

.footer-col h4 {
    color: white;
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-md);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-col a {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
    transition: color var(--transition-base);
}

.footer-col a:hover {
    color: var(--color-primary);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: var(--text-sm);
}

.footer-contact svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--color-primary);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: var(--text-sm);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

/* === WHATSAPP FLOTANTE === */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all var(--transition-base);
    animation: float 3s ease-in-out infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
    color: white;
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
}

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

/* === RESPONSIVE === */
@media (max-width: 968px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
        --text-3xl: 1.75rem;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 73px;
        flex-direction: column;
        background: white;
        width: 100%;
        text-align: center;
        transition: left var(--transition-base);
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
        gap: var(--spacing-lg);
    }

    .nav-menu.active {
        left: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

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

    .services-grid,
    .cases-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .footer-logo {
        margin: 0 auto var(--spacing-md);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .process-steps {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .case-results {
        grid-template-columns: 1fr;
    }

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

    .whatsapp-float svg {
        width: 26px;
        height: 26px;
    }
}

/* === OPTIMIZACIÓN DE RENDIMIENTO === */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* === ACCESIBILIDAD === */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}