/* --- VARIABLES Y ESTILOS GENERALES --- */
:root {
    --primary-color: #007BFF; /* Azul brillante */
    --secondary-color: #28a745; /* Verde para sostenibilidad */
    --dark-color: #343a40; /* Gris oscuro para texto */
    --light-color: #f8f9fa; /* Gris claro para fondos */
    --white-color: #ffffff;
    --font-family: 'Poppins', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--dark-color);
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--dark-color);
}

.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem auto;
    font-size: 1.1rem;
    color: #666;
}

.cta-button {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--white-color);
    padding: 12px 25px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.cta-button:hover {
    background-color: #218838;
    transform: translateY(-2px);
}

/* --- HEADER Y NAVEGACIÓN --- */
.main-header {
    background-color: var(--white-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    color: var(--dark-color);
    text-decoration: none;
    font-weight: 400;
    transition: color 0.3s ease;
}

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

.nav-link-button {
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 8px 15px;
    border-radius: 5px;
}
.nav-link-button:hover {
    background-color: #0056b3;
    color: var(--white-color);
}

.hamburger {
    display: none;
    cursor: pointer;
}
.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--dark-color);
    transition: all 0.3s ease-in-out;
}


/* --- SECCIÓN HERO --- */
.hero-section {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('https://images.pexels.com/photos/356079/pexels-photo-356079.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=2') no-repeat center center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white-color);
    padding: 0 2rem;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

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

/* --- OTRAS SECCIONES --- */
section {
    padding: 5rem 0;
}
.value-prop-section, .services-section, .faq-section {
    background-color: var(--light-color);
}

/* Value Cards */
.value-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.value-card {
    background: var(--white-color);
    padding: 2rem;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
.value-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}
.value-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

/* About Section */
.about-section {
    background: var(--white-color);
}
.mission-vision {
    display: flex;
    gap: 3rem;
    margin-top: 2rem;
}
.mission-vision h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}
.mission-vision i {
    margin-right: 0.5rem;
}

/* Service Cards */
.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.service-card {
    background: var(--white-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    text-align: center;
}
.service-card i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}
.service-card h3 {
    margin-bottom: 1rem;
}
.service-card ul {
    list-style: none;
    text-align: left;
    margin-top: 1rem;
}
.service-card li::before {
    content: '✓';
    color: var(--secondary-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Projects Section */
.project-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}
.project-card {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.project-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}
.project-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: var(--white-color);
    padding: 1.5rem;
    transform: translateY(30%);
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
}
.project-card:hover .project-info {
    transform: translateY(0);
    opacity: 1;
}
.project-info h3 {
    margin-bottom: 0.25rem;
}

/* FAQ Section */
.faq-accordion {
    max-width: 800px;
    margin: auto;
}
.faq-item {
    background: var(--white-color);
    margin-bottom: 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.faq-question {
    width: 100%;
    background: transparent;
    border: none;
    padding: 1.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-question i {
    transition: transform 0.3s ease;
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-answer p {
    padding: 0 1.5rem 1.5rem;
}
.faq-item.active .faq-answer {
    max-height: 200px; /* Adjust if needed */
}
.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    background: var(--white-color);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.contact-info p {
    margin-bottom: 1rem;
}
.contact-info i {
    margin-right: 0.75rem;
    color: var(--primary-color);
}
.contact-form .form-group {
    margin-bottom: 1rem;
}
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-family: var(--font-family);
}
.contact-form button {
    width: 100%;
    border: none;
}

/* Footer */
.main-footer {
    background: var(--dark-color);
    color: var(--light-color);
    text-align: center;
    padding: 2rem 0;
}

/* --- ANIMACIONES Y RESPONSIVE --- */

/* Animaciones */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/* Responsive Design */
@media(max-width: 768px) {
    .hamburger {
        display: block;
    }
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px; /* Ajustar a la altura del header */
        flex-direction: column;
        background-color: var(--white-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    }
    .nav-menu.active {
        left: 0;
    }
    .nav-item {
        margin: 1.5rem 0;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }
    .section-title {
        font-size: 2rem;
    }
    .mission-vision, .contact-wrapper {
        flex-direction: column;
        grid-template-columns: 1fr;
    }
    .contact-wrapper {
        padding: 1.5rem;
    }
}