/* ==========================================
   CSS Variables - Design System
   ========================================== */
:root {
    /* Primary Colors */
    --color-primary: #2563EB;
    --color-primary-dark: #1D4ED8;
    --color-primary-light: #3B82F6;

    /* Accent Color */
    --color-accent: #10B981;
    --color-accent-dark: #059669;

    /* Neutrals */
    --color-dark: #0F172A;
    --color-dark-soft: #1E293B;
    --color-gray-900: #1E293B;
    --color-gray-700: #334155;
    --color-gray-600: #475569;
    --color-gray-500: #64748B;
    --color-gray-400: #94A3B8;
    --color-gray-300: #CBD5E1;
    --color-gray-200: #E2E8F0;
    --color-gray-100: #F1F5F9;
    --color-gray-50: #F8FAFC;
    --color-white: #FFFFFF;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --spacing-4xl: 80px;
    --spacing-5xl: 100px;

    /* Container */
    --container-max: 1140px;
    --container-padding: 24px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px 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 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

/* ==========================================
   Typography
   ========================================== */
h1, h2, h3, h4 {
    color: var(--color-dark);
    line-height: 1.3;
    font-weight: 600;
}

h1 { font-size: clamp(32px, 5vw, 48px); }
h2 { font-size: clamp(28px, 4vw, 40px); }
h3 { font-size: clamp(20px, 3vw, 24px); }
h4 { font-size: 18px; }

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

p:last-child {
    margin-bottom: 0;
}

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

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

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

section {
    padding: var(--spacing-5xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 18px;
    color: var(--color-gray-500);
    margin-bottom: 0;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    font-family: var(--font-family);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-nav {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 10px 20px;
    font-size: 14px;
}

.btn-nav:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-full {
    width: 100%;
}

/* ==========================================
   Header
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--spacing-md) 0;
}

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

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-dark);
}

.logo:hover {
    color: var(--color-dark);
}

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

.nav a {
    color: var(--color-gray-600);
    font-size: 15px;
    font-weight: 500;
}

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

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    padding-top: calc(80px + var(--spacing-5xl));
    padding-bottom: var(--spacing-5xl);
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

.hero-subtitle {
    font-size: clamp(18px, 2.5vw, 20px);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.hero-cta-note {
    font-size: 14px;
    color: var(--color-gray-500);
    margin-bottom: 0;
}

/* ==========================================
   Beneficios Section
   ========================================== */
.beneficios {
    background-color: var(--color-white);
}

.beneficios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.beneficio-card {
    padding: var(--spacing-xl);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.beneficio-card:hover {
    background-color: var(--color-white);
    box-shadow: var(--shadow-lg);
}

.beneficio-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.beneficio-icon svg {
    width: 100%;
    height: 100%;
}

.beneficio-card h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-sm);
}

.beneficio-card p {
    color: var(--color-gray-600);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 0;
}

/* ==========================================
   Servicios Section
   ========================================== */
.servicios {
    background-color: var(--color-gray-50);
}

.servicios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-xl);
}

.servicio-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-normal);
}

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

.servicio-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.servicio-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    color: var(--color-primary);
}

.servicio-icon svg {
    width: 100%;
    height: 100%;
}

.servicio-header h3 {
    font-size: 20px;
    margin: 0;
}

.servicio-descripcion {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

.servicio-problema,
.servicio-cliente {
    font-size: 14px;
    color: var(--color-gray-600);
    padding: var(--spacing-md);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.servicio-problema strong,
.servicio-cliente strong {
    color: var(--color-gray-700);
}

.servicio-cliente {
    margin-bottom: 0;
}

/* ==========================================
   CTA Mid Section
   ========================================== */
.cta-mid {
    background-color: var(--color-dark);
    padding: var(--spacing-3xl) 0;
}

.cta-mid-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-mid h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-mid p {
    color: var(--color-gray-400);
    font-size: 18px;
    margin-bottom: var(--spacing-xl);
}

/* ==========================================
   Proceso Section
   ========================================== */
.proceso {
    background-color: var(--color-white);
}

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

.proceso-step {
    display: flex;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.proceso-step:last-child {
    border-bottom: none;
}

.proceso-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: var(--color-white);
    font-size: 20px;
    font-weight: 600;
    border-radius: 50%;
}

.proceso-content h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-sm);
}

.proceso-content p {
    color: var(--color-gray-600);
    margin-bottom: 0;
}

/* ==========================================
   Nosotros Section
   ========================================== */
.nosotros {
    background-color: var(--color-gray-50);
}

.nosotros-content {
    max-width: 800px;
    margin: 0 auto;
}

.nosotros-intro {
    font-size: 18px;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
}

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

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

.nosotros-punto svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--color-accent);
    margin-top: 2px;
}

.nosotros-punto span {
    color: var(--color-gray-600);
    line-height: 1.6;
}

.nosotros-punto strong {
    color: var(--color-dark);
}

.nosotros-nota {
    font-size: 15px;
    color: var(--color-gray-500);
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

/* ==========================================
   Contacto Section
   ========================================== */
.contacto {
    background-color: var(--color-white);
}

.contacto-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.contacto-info .section-title {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.contacto-info > p {
    color: var(--color-gray-600);
    font-size: 17px;
    margin-bottom: var(--spacing-xl);
}

.contacto-beneficios {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.contacto-beneficio {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-600);
    font-size: 15px;
}

.contacto-beneficio svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
}

.contacto-directo {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
}

.contacto-directo p {
    font-size: 14px;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-sm);
}

.contacto-email {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-primary);
}

/* Contact Form */
.contacto-form {
    background-color: var(--color-gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    font-family: var(--font-family);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background-color: #ECFDF5;
    color: #065F46;
    border: 1px solid #A7F3D0;
    display: block;
}

.form-message.error {
    background-color: #FEF2F2;
    color: #991B1B;
    border: 1px solid #FECACA;
    display: block;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background-color: var(--color-dark);
    color: var(--color-gray-400);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--color-gray-700);
}

.footer-brand .logo {
    color: var(--color-white);
    font-size: 28px;
    margin-bottom: var(--spacing-md);
    display: block;
}

.footer-brand p {
    color: var(--color-gray-400);
    font-size: 15px;
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-col h4 {
    color: var(--color-white);
    font-size: 16px;
    margin-bottom: var(--spacing-md);
}

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

.footer-col li {
    margin-bottom: var(--spacing-sm);
}

.footer-col a {
    color: var(--color-gray-400);
    font-size: 14px;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
}

.footer-bottom p {
    font-size: 14px;
    margin-bottom: 0;
}

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

.footer-legal a {
    color: var(--color-gray-400);
    font-size: 14px;
}

.footer-legal a:hover {
    color: var(--color-white);
}

/* ==========================================
   Tech Stack Section
   ========================================== */
.tech-stack {
    background-color: var(--color-white);
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.tech-stack-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.tech-stack-label {
    font-size: 14px;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.tech-stack-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

.tech-logo {
    height: 32px;
    width: auto;
    opacity: 0.7;
    transition: opacity var(--transition-normal);
    filter: grayscale(100%);
}

.tech-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
}

/* ==========================================
   WhatsApp Floating Button
   ========================================== */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all var(--transition-normal);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

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

/* ==========================================
   Footer Legal Info
   ========================================== */
.footer-legal-info {
    font-size: 13px;
    color: var(--color-gray-500);
    margin-top: var(--spacing-sm);
}

/* ==========================================
   Animations
   ========================================== */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
}

.fade-in-up.visible {
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

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

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    .contacto-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

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

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

@media (max-width: 768px) {
    :root {
        --spacing-5xl: 64px;
        --spacing-4xl: 48px;
    }

    .tech-stack-logos {
        gap: var(--spacing-lg);
    }

    .tech-logo {
        height: 24px;
    }

    .whatsapp-float {
        bottom: 16px;
        right: 16px;
        width: 52px;
        height: 52px;
    }

    .whatsapp-float svg {
        width: 28px;
        height: 28px;
    }

    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .nav {
        width: 100%;
        justify-content: center;
        gap: var(--spacing-md);
        flex-wrap: wrap;
    }

    .nav a:not(.btn) {
        display: none;
    }

    .hero {
        padding-top: calc(120px + var(--spacing-3xl));
    }

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

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

    .proceso-step {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .proceso-number {
        margin: 0 auto;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .btn-lg {
        padding: 14px 24px;
        font-size: 16px;
    }

    .contacto-form {
        padding: var(--spacing-lg);
    }
}