:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #7f8c8d;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --bg-light: #ecf0f1;
    --bg-white: #ffffff;
    --border-color: #bdc3c7;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navegación */
.navbar {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

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

.nav-brand h2 {
    color: white;
    font-size: 1.5rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('./assets/hero-back.jpg') center/cover no-repeat;
    color: white;
    padding: 120px 20px;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.btn-primary {
    display: inline-block;
    background-color: white;
    color: var(--primary-color);
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

/* Sections */
.section {
    padding: 80px 20px;
}

.section-alt {
    background-color: var(--bg-light);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 20px auto 0;
}

/* About Section */
.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    text-align: justify;
}

.credentials {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.credential-item {
    text-align: center;
    padding: 2rem;
    background-color: var(--bg-white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.credential-item:hover {
    transform: translateY(-5px);
}

.credential-item p {
    text-align: center;
}

.credential-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.service-card {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

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

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Applications Grid */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.application-item {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--accent-color);
}

.application-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.application-item ul {
    list-style: none;
    padding-left: 0;
}

.application-item li {
    padding: 0.5rem 0;
    color: var(--text-light);
    position: relative;
    padding-left: 25px;
}

.application-item li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* Testimonials */
.testimonials {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.testimonial-card {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    position: relative;
}

.quote-icon {
    font-size: 4rem;
    color: var(--accent-color);
    opacity: 0.3;
    position: absolute;
    top: 10px;
    left: 20px;
    font-family: Georgia, serif;
}

.testimonial-text {
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    color: var(--primary-color);
    font-weight: 600;
    text-align: right;
}

/* Certifications */
.certifications {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.certifications h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.cert-list {
    list-style: none;
    padding: 0;
}

.cert-list li {
    padding: 1rem;
    margin: 0.5rem 0;
    background-color: var(--bg-white);
    border-radius: 5px;
    color: var(--text-light);
    box-shadow: var(--shadow);
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3,
.contact-form h3 {
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: flex-start;
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 0.3rem;
}

.contact-item p,
.contact-item a {
    color: var(--text-light);
    text-decoration: none;
}

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

/* Contact Form */
.contact-form {
    background-color: var(--bg-light);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
}

.form-note {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 1rem;
    text-align: center;
}

/* Campo trampa anti-spam (oculto para humanos, visible para bots) */
.hp-field {
    position: absolute;
    left: -9999px;
    top: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
}

/* Privacy Section */
.privacy-section {
    background-color: var(--bg-light);
    padding: 60px 20px;
    border-top: 3px solid var(--accent-color);
}

.privacy-section h3 {
    color: var(--primary-color);
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
}

.privacy-content {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.privacy-content p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    text-align: justify;
}

.privacy-content strong {
    color: var(--primary-color);
}

.privacy-content ul {
    margin: 1rem 0 1.5rem 2rem;
    color: var(--text-light);
}

.privacy-content li {
    margin-bottom: 0.5rem;
}

/* Link sin estilo de hipervínculo en footer */
.footer a {
    color: inherit;
    text-decoration: none;
    cursor: pointer;
}

.footer a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2rem 20px;
}

.footer p {
    margin-bottom: 0.5rem;
}

.footer-note {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary-color);
        padding: 1rem 0;
        gap: 0;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        text-align: center;
        padding: 1rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-logo {
        width: 30px;
        height: 30px;
    }

    .nav-brand h2 {
        font-size: 1.2rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section {
        padding: 50px 20px;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

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

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

@media (max-width: 480px) {
    .nav-logo {
        width: 28px;
        height: 28px;
    }

    .nav-brand h2 {
        font-size: 1rem;
    }

    .hero-content h1 {
        font-size: 1.7rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.7rem;
    }

    .btn-primary {
        padding: 12px 30px;
        font-size: 0.9rem;
    }

    .service-card,
    .application-item,
    .testimonial-card {
        padding: 1.5rem;
    }

    .privacy-content {
        padding: 1.5rem;
    }
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card,
.application-item,
.testimonial-card {
    animation: fadeIn 0.6s ease-out;
}