/* VARIABLES GLOBALES */
:root {
    --tech-blue: #2563EB;
    --tech-dark-blue: #1E40AF;
    --dark-accent: #0F172A;
    --gray-light: #F8FAFC;
    --gray-medium: #CBD5E1;
    --text-dark: #1E293B;
    --text-light: #64748B;
    --white: #FFFFFF;
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --transition: all 0.3s ease;
}

/* RESET */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-main); color: var(--text-dark); background-color: var(--white); line-height: 1.6; }
a { text-decoration: none; color: inherit; }
img, svg { max-width: 100%; display: block; }

/* HELPERS */
.container { width: 90%; max-width: 1200px; margin: 0 auto; }
.container-narrow { max-width: 800px; }
.section { padding: 6rem 0; }
.section-light { background-color: var(--gray-light); }
.section-dark { background-color: var(--dark-accent); color: var(--white); }
.section-title { font-size: 2.5rem; font-weight: 800; margin-bottom: 1.5rem; text-align: center; color: var(--dark-accent); }
.section-dark .section-title { color: var(--white); }
.section-subtitle { text-align: center; color: var(--text-light); max-width: 600px; margin: 0 auto 3rem; }

/* BUTTONS */
.btn-primary {
    background-color: var(--tech-blue);
    color: var(--white);
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    border: none;
    cursor: pointer;
}
.btn-primary:hover { background-color: var(--tech-dark-blue); transform: translateY(-2px); }
.btn-large { padding: 1rem 2.5rem; font-size: 1.1rem; }
.btn-full { width: 100%; }

/* HEADER */
.header { background: var(--white); padding: 1.2rem 0; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 1000; }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 800; color: var(--dark-accent); }
.logo span { color: var(--tech-blue); }
.nav-menu { display: flex; gap: 2rem; align-items: center; }
.nav-menu a { font-weight: 500; color: var(--text-dark); transition: var(--transition); }
.nav-menu a:hover { color: var(--tech-blue); }
.menu-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--dark-accent); }

/* HERO */
.hero { padding: 8rem 0; text-align: center; background: linear-gradient(180deg, var(--gray-light) 0%, var(--white) 100%); }
.hero h1 { font-size: 3.5rem; font-weight: 800; line-height: 1.2; margin-bottom: 1.5rem; max-width: 900px; margin-left: auto; margin-right: auto; color: var(--dark-accent); }
.hero .subtitle { font-size: 1.25rem; color: var(--text-light); max-width: 700px; margin: 0 auto 2.5rem; }

/* SERVICIOS - CARDS */
.grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.card { background: var(--white); padding: 2.5rem; border-radius: 12px; border: 1px solid #E2E8F0; transition: var(--transition); }
.card:hover { transform: translateY(-5px); box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1); border-color: var(--tech-blue); }
.icon-box { background: rgba(37, 99, 235, 0.1); color: var(--tech-blue); width: 60px; height: 60px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 1.5rem; }
.card h3 { font-size: 1.5rem; margin-bottom: 0.8rem; color: var(--dark-accent); }
.card p { color: var(--text-light); }

/* CLIENTES */
.logos-grid { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 3rem; }
.logo-item { font-size: 1.5rem; font-weight: 700; color: var(--gray-medium); filter: grayscale(100%); opacity: 0.7; transition: var(--transition); }
.logo-item:hover { filter: grayscale(0%); opacity: 1; color: var(--tech-blue); }

/* FAQ ACORDEON */
.accordion { margin-top: 3rem; }
.accordion-item { border-bottom: 1px solid #E2E8F0; }
.accordion-header { width: 100%; padding: 1.5rem 0; background: none; border: none; font-family: var(--font-main); font-size: 1.2rem; font-weight: 600; color: var(--dark-accent); text-align: left; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.accordion-header .icon { width: 20px; height: 20px; position: relative; transition: var(--transition); }
.accordion-header .icon::before, .accordion-header .icon::after { content: ''; position: absolute; background-color: var(--tech-blue); transition: var(--transition); }
.accordion-header .icon::before { width: 100%; height: 2px; top: 9px; }
.accordion-header .icon::after { width: 2px; height: 100%; left: 9px; }
.accordion-header[aria-expanded="true"] .icon::after { transform: rotate(90deg); opacity: 0; }
.accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.3s ease-out; }
.accordion-content p { padding: 0 0 1.5rem 0; color: var(--text-light); }

/* CONTACTO */
.contact-container { display: flex; gap: 4rem; align-items: center; }
.contact-info { flex: 1; }
.contact-info h2 { font-size: 2.5rem; margin-bottom: 1rem; }
.contact-info p { margin-bottom: 1.5rem; opacity: 0.9; }
.contact-form { flex: 1; background: rgba(255,255,255,0.1); padding: 2.5rem; border-radius: 12px; backdrop-filter: blur(10px); }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-size: 0.9rem; font-weight: 600; }
.form-group input, .form-group textarea { width: 100%; padding: 0.8rem 1rem; border-radius: 8px; border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.05); color: var(--white); font-family: var(--font-main); }
.form-group input::placeholder, .form-group textarea::placeholder { color: rgba(255,255,255,0.5); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--tech-blue); }

/* FOOTER */
.footer { background: #0B112F; color: rgba(255,255,255,0.6); padding: 3rem 0; }
.footer-container { display: flex; justify-content: space-between; align-items: center; }
.footer .logo { color: var(--white); margin-bottom: 0.5rem; }
.copyright { font-size: 0.9rem; }
.social-links { display: flex; gap: 1.5rem; }
.social-links a { color: rgba(255,255,255,0.6); transition: var(--transition); }
.social-links a:hover { color: var(--tech-blue); }

/* WHATSAPP FLOAT */
.whatsapp-float { position: fixed; bottom: 30px; right: 30px; background: #25D366; width: 60px; height: 60px; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 15px rgba(0,0,0,0.2); z-index: 999; transition: var(--transition); }
.whatsapp-float:hover { transform: scale(1.1); box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4); }

/* RESPONSIVE (Mobile First Adjustments) */
@media (max-width: 768px) {
    .menu-toggle { display: block; z-index: 1001; }
    .nav-menu { 
        position: fixed; 
        top: 0; 
        right: -100%; 
        width: 80%; 
        height: 100vh; 
        background: var(--white); 
        flex-direction: column; 
        justify-content: center; 
        gap: 2rem; 
        transition: right 0.3s ease-in-out; 
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    }
    .nav-menu.active { right: 0; }
    .hero h1 { font-size: 2.5rem; }
    .section-title { font-size: 2rem; }
    .contact-container { flex-direction: column; gap: 2rem; }
    .footer-container { flex-direction: column; gap: 1.5rem; text-align: center; }
}