/* ========================================
   RESET + VARIABLES + TIPOGRAFÍA
   ======================================== */
:root {
    --color-primary: #0056b3;
    --color-secondary: #007bff;
    --color-dark: #1a1a1a;
    --color-light: #f8f9fa;
    --color-gray: #6c757d;
    --color-success: #28a745;
    
    --font-primary: 'Inter', 'Arial', sans-serif;
    --font-size-base: 1rem;
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.12);
}

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

html {
    scroll-behavior: smooth;
    font-size: 100%;
}

body {
    font-family: var(--font-primary);
    line-height: 1.7;
    color: var(--color-dark);
    background-color: #fff;
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

button, input, select, textarea {
    font-family: inherit;
}

/* ========================================
   LAYOUT
   ======================================== */
.container {
    width: min(90%, 1200px);
    margin: 0 auto;
    padding: 0 15px;
}

/* ========================================
   HEADER & NAVEGACIÓN
   ======================================== */
.main-header {
    background: #fff;
    padding: 1rem 0;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--color-primary);
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.logo-text {
    font-weight: 700;
}

/* --- MENÚ MÓVIL --- */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    content: '';
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-dark);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger::before { transform: translateY(-8px); }
.hamburger::after { transform: translateY(5px); }

.nav-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}
.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: translateY(0) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: translateY(-3px) rotate(-45deg);
}

/* --- NAV LIST --- */
.main-nav ul {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--color-secondary);
    background: rgba(0, 123, 255, 0.1);
}

.btn-cta {
    background: var(--color-secondary);
    color: white !important;
    font-weight: 600;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-size: 0.95rem;
}

.btn-cta:hover {
    background: #0056b3;
    transform: translateY(-1px);
}

/* ========================================
   BOTONES
   ======================================== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background: #004085;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* ========================================
   SECCIONES GENERALES
   ======================================== */
.section-title {
    font-size: clamp(2rem, 5vw, 2.8rem);
    text-align: center;
    margin-bottom: 1rem;
    color: var(--color-dark);
    font-weight: 700;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-gray);
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
}

/* ========================================
   1. HERO
   ======================================== */
.hero {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.7)), 
                url('../img/tech-bg.jpg') center/cover no-repeat;
    color: white;
    text-align: center;
    padding: clamp(80px, 15vw, 140px) 0;
}

.hero h1 {
    font-size: clamp(2.2rem, 6vw, 3.5rem);
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    opacity: 0.95;
}

/* ========================================
   2. SERVICIOS
   ======================================== */
.main-services-section {
    padding: 5rem 0;
    background: #fff;
}

.services-list-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2.5rem;
    margin-top: 3rem;
}

.infrastructure-intro {
    background: var(--color-light);
    padding: 2rem;
    border-radius: var(--border-radius);
    border-left: 5px solid var(--color-primary);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.infrastructure-intro h3 {
    color: var(--color-primary);
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

.key-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.service-item {
    background: white;
    padding: 1.5rem;
    border: 1px solid #e9ecef;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.service-item h4 {
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

/* ========================================
   3. QUIÉNES SOMOS
   ======================================== */
.about-us-section {
    padding: 5rem 0;
    background: var(--color-light);
}

.about-us-section .container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-content h2 {
    margin-bottom: 1.5rem;
}

.mission-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

.mission, .values {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid #dee2e6;
}

.mission h3, .values h3, .why-us h3 {
    color: var(--color-primary);
    margin-bottom: 0.8rem;
    font-size: 1.4rem;
}

.why-us {
    background: #e3f2fd;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-top: 1.5rem;
}

.about-image img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

/* ========================================
   4. TESTIMONIOS
   ======================================== */
.testimonials-section {
    padding: 5rem 0;
    background: #fff;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: var(--color-light);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.highlight-card {
    background: #e3f2fd;
    border: 2px solid var(--color-secondary);
}

.quote {
    font-style: italic;
    margin-bottom: 1rem;
    line-height: 1.6;
    color: #444;
}

.author {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.clients-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

.clients-logos img {
    height: 50px;
    width: auto;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
}

.clients-logos img:hover {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.1);
}

/* ========================================
   5. CTA BANNER
   ======================================== */
.final-cta-banner {
    background: linear-gradient(135deg, var(--color-dark), #111);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.final-cta-banner h2 {
    font-size: clamp(2rem, 5vw, 2.8rem);
    margin-bottom: 1rem;
}

/* ========================================
   6. CONTACTO
   ======================================== */
.contact-section {
    padding: 5rem 0;
    background: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

.contact-info, .contact-form-container {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid #e9ecef;
}

.contact-info {
    background: var(--color-light);
}

.contact-info h3, .contact-form-container h3 {
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    font-size: 1.6rem;
}

.contact-info ul {
    space-y: 1rem;
}

.contact-info a {
    color: var(--color-primary);
    font-weight: 500;
}

.contact-form .form-group {
    margin-bottom: 1.2rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #444;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #ced4da;
    border-radius: 6px;
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.2);
}

.contact-form .btn-primary {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

/* ========================================
   FOOTER
   ======================================== */
.main-footer {
    background: var(--color-dark);
    color: #ccc;
    padding: 2rem 0;
    font-size: 0.9rem;
    text-align: center;
}

.main-footer a {
    color: #fff;
    text-decoration: underline;
}

/* ========================================
   MEDIA QUERIES
   ======================================== */
@media (max-width: 992px) {
    .services-list-container,
    .about-us-section .container,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .about-us-section .container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    
    .main-nav ul {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 1rem 0;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        transform: translateY(-150%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .main-nav ul.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        padding: 1rem 2rem;
        border-bottom: 1px solid #eee;
    }
    
    .btn-cta {
        margin: 0.5rem auto;
        display: block;
        width: fit-content;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 80px 0;
    }
    
    .clients-logos {
        gap: 1.5rem;
    }
    
    .clients-logos img {
        height: 40px;
    }
}