/* =========================================
   1. VARIABLES Y CONFIGURACIÓN GLOBAL
   ========================================= */
:root {
    /* Paleta de Colores (Business Premium) */
    --color-corporate: #2C3E50; /* Oxford Navy - Azul Oscuro */
    --color-accent: #D35400;    /* Brick Orange - Naranja Ladrillo */
    --color-text-main: #333333;
    --color-text-light: #666666;
    --color-bg-light: #F8F9FA;
    --color-white: #FFFFFF;
    
    /* Colores de Verticales (Servicios) */
    --border-grey: #7F8C8D;
    --border-blue: #2980B9;
    --border-purple: #8E44AD;
    --border-teal: #16A085;

    /* Tipografía */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

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

body {
    font-family: var(--font-body);
    color: var(--color-text-main);
    line-height: 1.6;
    background-color: var(--color-white);
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-corporate);
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

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

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

.section-padding {
    padding: 80px 0;
}

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

.text-center {
    text-align: center;
}

/* Botones */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: #a84300;
}

.btn-outline {
    border: 2px solid white;
    color: white;
    background: transparent;
    margin-left: 10px;
}

.btn-outline:hover {
    background-color: white;
    color: var(--color-corporate);
}

/* Botón Outline Oscuro (Para fondos claros) */
.btn-outline-dark {
    border: 2px solid var(--color-corporate);
    color: var(--color-corporate);
    padding: 10px 25px;
    font-weight: 700;
    text-transform: uppercase;
    display: inline-block;
    border-radius: 4px;
    background: transparent;
}

.btn-outline-dark:hover {
    background-color: var(--color-corporate);
    color: white;
}

/* =========================================
   2. HEADER & NAV
   ========================================= */
.main-header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo a {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-corporate);
    letter-spacing: 1px;
}

.logo-sub {
    font-size: 0.6rem;
    color: var(--color-text-light);
    letter-spacing: 2px;
}

.main-nav ul {
    display: flex;
    gap: 30px;
}

.main-nav a {
    color: var(--color-corporate);
    font-weight: 600;
    font-size: 0.95rem;
}

.main-nav a:hover, .main-nav a.active {
    color: var(--color-accent);
}

.header-cta {
    display: block;
}

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--color-corporate);
    cursor: pointer;
}

/* =========================================
   3. HERO SECTION (HOME)
   ========================================= */
.hero {
    height: 85vh;
    /* Fallback color por si la imagen falla */
    background-color: var(--color-corporate); 
    background-image: url('https://images.unsplash.com/photo-1542744173-8e7e53415bb0?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(44, 62, 80, 0.9), rgba(44, 62, 80, 0.7));
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
    max-width: 800px;
}

.hero-content h1 {
    color: white;
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

/* =========================================
   4. PAGE HEADERS (SUBPÁGINAS)
   ========================================= */
.page-header {
    background-color: var(--color-corporate);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    color: white;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

/* =========================================
   5. COMPONENTES GENERALES (CARDS, ICONOS)
   ========================================= */

/* Metodología (Home) */
.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.process-item {
    text-align: center;
    padding: 20px;
}

.icon-box {
    font-size: 2.5rem;
    color: var(--color-corporate);
    margin-bottom: 20px;
}

/* Tarjetas de Servicios (Home) */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.service-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    border-top: 5px solid var(--color-corporate);
}

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

.border-top-grey { border-top-color: var(--border-grey); }
.border-top-blue { border-top-color: var(--border-blue); }
.border-top-purple { border-top-color: var(--border-purple); }
.border-top-teal { border-top-color: var(--border-teal); }

.card-icon {
    font-size: 2rem;
    color: var(--color-corporate);
    margin-bottom: 20px;
}

.link-arrow {
    color: var(--color-accent);
    font-weight: 700;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-top: 15px;
}

/* =========================================
   6. PÁGINA DE SERVICIOS (DETALLE)
   ========================================= */
.service-row {
    display: flex;
    align-items: center;
    gap: 50px;
}

.service-row.reverse {
    flex-direction: row-reverse;
}

.service-image {
    flex: 1;
    height: 400px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    background-color: #ddd; /* Placeholder color */
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.service-image:hover img {
    transform: scale(1.05);
}

.service-content {
    flex: 1;
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.icon-grey { color: var(--border-grey); }
.icon-blue { color: var(--border-blue); }
.icon-purple { color: var(--border-purple); }
.icon-teal { color: var(--border-teal); }

.service-list {
    margin: 20px 0 30px 0;
}

.service-list li {
    margin-bottom: 10px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.service-list i {
    color: var(--color-accent);
    margin-top: 5px;
    font-size: 0.8rem;
}

.cta-section {
    background-color: var(--color-corporate);
    color: white;
    padding: 80px 0;
}
.cta-section h2 { color: white; }

/* =========================================
   7. PÁGINA DE CONTACTO
   ========================================= */
.contact-section {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
}

.contact-form-column {
    flex: 2;
    min-width: 300px;
}

.contact-info-column {
    flex: 1;
    min-width: 300px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-text-light);
}

.form-group input,
.form-group textarea,
.select-wrapper select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 0.95rem;
    font-family: var(--font-body);
}

.form-group input:focus,
.form-group textarea:focus,
.select-wrapper select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(211, 84, 0, 0.3);
}

.form-group-inline {
    display: flex;
    gap: 20px;
}

.form-group-inline .form-group {
    flex: 1;
}

/* Custom Select Dropdown */
.select-wrapper {
    position: relative;
    display: inline-block;
    width: 100%;
}

.select-wrapper select {
    appearance: none;
    background-color: white;
}

.select-arrow {
    position: absolute;
    top: 50%;
    right: 15px;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--color-text-light);
}

.contact-details h3, .contact-schedule h3 {
    color: var(--color-corporate);
    margin-bottom: 20px;
}

.contact-info-list, .contact-schedule p {
    color: var(--color-text-light);
    line-height: 1.8;
}

.contact-info-list li {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-bottom: 15px;
}

.contact-info-list i {
    color: var(--color-corporate);
    font-size: 1.2rem;
}

.contact-map {
    margin-top: 30px;
    border-radius: 8px;
    overflow: hidden;
    height: 300px;
    background-color: #eee;
}

/* =========================================
   8. TRUST SECTION (HOME)
   ========================================= */
.trust-section {
    background-color: var(--color-corporate);
    color: white;
    padding: 80px 0;
}

.trust-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 50px;
}

.trust-text {
    flex: 2;
}
.trust-text h2 { color: white; }

.check-list li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.check-list i { color: var(--color-accent); }

.trust-stat {
    flex: 1;
    display: flex;
    justify-content: center;
}

.stat-box {
    border: 2px solid rgba(255,255,255,0.2);
    padding: 30px;
    text-align: center;
}

.stat-box .number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-accent);
}

/* =========================================
   9. FOOTER
   ========================================= */
.main-footer {
    background-color: #1a252f;
    color: #ecf0f1;
    padding-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-col h4 {
    color: white;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.legal-name {
    font-weight: 700;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.footer-links li { margin-bottom: 10px; }
.footer-links a { color: #bdc3c7; font-size: 0.9rem; }
.footer-links a:hover { color: var(--color-accent); }

.contact-info li {
    margin-bottom: 15px;
    display: flex;
    gap: 10px;
    font-size: 0.9rem;
    color: #bdc3c7;
}

.footer-bottom {
    padding: 20px 0;
    font-size: 0.8rem;
    color: #7f8c8d;
}

.payment-methods {
    font-size: 1.5rem;
    margin-top: 10px;
    color: #bdc3c7;
    display: flex;
    gap: 15px;
}

/* =========================================
   10. RESPONSIVE (MÓVIL / TABLET)
   ========================================= */
@media (max-width: 992px) {
    /* Ajuste para Contacto en tablets/laptops pequeñas */
    .contact-section {
        flex-direction: column;
    }
    .contact-form-column, .contact-info-column {
        width: 100%;
        flex: auto;
    }
}

@media (max-width: 768px) {
    /* Header Móvil */
    .main-nav { display: none; } /* Nota: Se requiere JS para mostrarlo */
    .header-cta { display: none; } 
    .mobile-toggle { display: block; }
    
    /* Hero */
    .hero-content h1 { font-size: 2rem; }
    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }
    .btn-outline { margin-left: 0; }
    
    /* Servicios */
    .service-row, .service-row.reverse {
        flex-direction: column;
    }
    .service-image {
        width: 100%;
        height: 250px;
    }
    
    /* Formularios */
    .form-group-inline {
        flex-direction: column;
        gap: 0;
    }
    
    /* Trust Section */
    .trust-content { flex-direction: column; }
}


/* =========================================
   11. ESTILOS PÁGINA PROYECTOS (ADD-ON)
   ========================================= */

/* Filtros */
.project-filters {
    margin-bottom: 40px;
}

.filter-btn {
    display: inline-block;
    padding: 8px 20px;
    margin: 0 5px 10px;
    border: 1px solid #ddd;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-light);
    transition: all 0.3s ease;
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--color-corporate);
    color: white;
    border-color: var(--color-corporate);
}

/* Grid de Proyectos */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.project-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
    border: 1px solid #eee;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.project-img {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-img img {
    transform: scale(1.05);
}

/* Etiquetas (Tags) sobre la imagen */
.project-tag {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 5px 12px;
    border-radius: 4px;
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.tag-construction { background-color: var(--border-grey); }
.tag-usa { background-color: var(--border-blue); }
.tag-event { background-color: var(--border-purple); }
.tag-tech { background-color: var(--border-teal); }

.project-info {
    padding: 25px;
}

.project-info h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.project-detail {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.project-detail p {
    margin-bottom: 8px;
    line-height: 1.5;
}

.project-detail strong {
    color: var(--color-corporate);
}

/* Responsive para Proyectos */
@media (max-width: 576px) {
    .projects-grid {
        grid-template-columns: 1fr; /* Una sola columna en móviles pequeños */
    }
}

/* =========================================
   12. ESTILOS PÁGINA NOSOTROS (ADD-ON)
   ========================================= */

/* Sección Split (Texto / Imagen) */
.about-split {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-text {
    flex: 1;
}

.about-text h2 {
    font-size: 2rem;
    margin-bottom: 25px;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.05rem;
    color: var(--color-text-light);
}

.about-image {
    flex: 1;
    position: relative;
}

.about-image img {
    border-radius: 8px;
    box-shadow: 20px 20px 0px var(--color-corporate); /* Efecto decorativo */
}

/* Grid del Modelo Operativo (Hub) */
.hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.hub-card {
    background: white;
    padding: 40px 30px;
    border-radius: 8px;
    border: 1px solid #eee;
    transition: transform 0.3s ease;
}

.hub-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    border-color: var(--color-corporate);
}

.hub-icon {
    font-size: 2.5rem;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.hub-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

/* Grid de Valores */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.value-item {
    background-color: var(--color-bg-light);
    padding: 30px;
    border-left: 4px solid var(--color-corporate);
}

.value-item h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--color-corporate);
}

.value-item p {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* Responsive Nosotros */
@media (max-width: 992px) {
    .about-split {
        flex-direction: column;
    }
    
    .about-image img {
        box-shadow: 10px 10px 0px var(--color-corporate);
    }
}

/* =========================================
   13. ESTILOS PÁGINAS LEGALES (ADD-ON)
   ========================================= */

.legal-content {
    max-width: 800px; /* Hace el texto más angosto para leer mejor */
    margin: 0 auto;
}

.legal-content h3 {
    margin-top: 30px;
    font-size: 1.3rem;
    color: var(--color-corporate);
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
}

.legal-content p, .legal-content li {
    font-size: 1rem;
    color: var(--color-text-main);
    margin-bottom: 15px;
    text-align: justify;
}

.legal-content ul {
    list-style: disc;
    padding-left: 20px;
    margin-bottom: 20px;
}