/* style.css - VERSIÓN FINAL CON MENÚ HAMBURGUESA Y CORRECCIONES */

/* Variables de Color de SPG */
:root {
    --spg-dark-gray: #343a40;
    --spg-light-gray: #f8f9fa;
    --spg-medium-gray: #e9ecef;
    --spg-blue: #007bff;
    --spg-text-color: #495057;
    --spg-heading-color: #212529;
    --spg-white: #ffffff;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    color: var(--spg-text-color);
    background: var(--spg-white);
    overflow-x: hidden;
}

/* CONTENEDORES */
.container { width: 90%; max-width: 1200px; margin: auto; overflow: hidden; padding: 40px 0; }
.container-fluid { width: 100%; padding: 40px 0; overflow: hidden; }

/* TIPOGRAFÍA */
h1, h2, h3 { color: var(--spg-heading-color); margin-bottom: 20px; text-align: center; }
h1 { font-size: 2.5em; line-height: 1.2; }
h2 { font-size: 2em; line-height: 1.3; }
h3 { font-size: 1.5em; }
a { color: var(--spg-blue); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: #0056b3; }

/* --- HEADER Y NAVEGACIÓN (DISEÑO BASE DESKTOP) --- */
.main-header {
    background: var(--spg-dark-gray);
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0; 
}

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

.logo img {
    height: 50px;
    max-width: 200px;
    filter: brightness(2);
    object-fit: contain;
}

/* Botón Hamburguesa (Oculto en desktop) */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--spg-white);
    font-size: 1.8em;
    cursor: pointer;
    padding: 5px;
}

.main-nav ul {
    list-style: none;
    display: flex;
    align-items: center;
    margin: 0;
}

.main-nav ul li { margin-left: 20px; }

.main-nav ul li a {
    color: var(--spg-white);
    font-weight: bold;
    padding: 5px 0;
    border-bottom: 3px solid transparent;
    font-size: 0.95em;
    transition: all 0.3s ease;
}

.main-nav ul li a:hover, .main-nav ul li a.active {
    color: var(--spg-blue);
    border-bottom: 3px solid var(--spg-blue);
}

/* Botones de WhatsApp */
.whatsapp-button {
    background: #25D366;
    color: var(--spg-white);
    padding: 8px 15px;
    border-radius: 5px;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
    transition: background 0.3s ease;
}
.whatsapp-button:hover { background: #1DA851; color: white; }

/* Elementos exclusivos de móvil (ocultos en desktop) */
.mobile-only-wa { display: none; }


/* --- HERO SECTION --- */
.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('camion-carretera.jpg') no-repeat center center/cover;
    color: var(--spg-white);
    text-align: center;
    padding: 120px 0;
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
}
.hero-content { position: relative; z-index: 2; width: 100%; }
.hero-content h1 { font-size: 3em; margin-bottom: 20px; color: var(--spg-white); text-shadow: 2px 2px 4px rgba(0,0,0,0.8); }
.hero-content p { font-size: 1.3em; margin-bottom: 30px; max-width: 800px; margin-left: auto; margin-right: auto; font-weight: 500; }
.trust-text { margin-top: 30px; font-style: italic; font-size: 0.9em; opacity: 0.9; }

/* --- BOTONES --- */
.btn {
    display: inline-block; background: var(--spg-blue); color: var(--spg-white); padding: 12px 25px; border-radius: 5px;
    text-transform: uppercase; font-weight: bold; transition: all 0.3s ease; border: none; cursor: pointer; font-size: 0.9em;
}
.btn:hover { background: #0056b3; transform: translateY(-2px); }
.btn-large { padding: 15px 35px; font-size: 1.1em; }
.btn-centered { margin: 40px auto 0; display: table; }

/* --- SECCIONES GENERALES --- */
.section-gray { background: var(--spg-medium-gray); padding: 60px 0; text-align: center; }
.section-white { background: var(--spg-white); padding: 60px 0; text-align: center; }

/* ESTILO PARA LA IMAGEN EN SERVICIOS (Agregado aquí) */
.hero-service-img {
    max-width: 800px;
    width: 100%;
    height: auto;
    margin-top: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    border: 4px solid rgba(255, 255, 255, 0.2);
}

.page-hero-services { background: var(--spg-dark-gray); color: var(--spg-white); padding: 80px 0 50px; }
.page-hero-services h1 { color: var(--spg-white); }
.subtitle-intro { font-size: 1.1em; max-width: 900px; margin: 0 auto; opacity: 0.8; }

/* --- GRIDS (FEATURES & ISO) --- */
.features-grid, .iso-grid, .methodology-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; margin-top: 40px;
}
.feature-item, .iso-card, .methodology-step {
    background: var(--spg-white); padding: 30px; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease; display: flex; flex-direction: column; align-items: center; height: 100%;
}
.feature-item:hover, .iso-card:hover { transform: translateY(-5px); }
.feature-item i, .iso-card i { color: var(--spg-blue); margin-bottom: 20px; }
.card-blue { background: var(--spg-blue); color: var(--spg-white); }
.card-blue i, .card-blue h3 { color: var(--spg-white); }
.card-blue hr { border-color: rgba(255, 255, 255, 0.4); margin: 15px 0; width: 100%; }
.card-gray { background: var(--spg-light-gray); border: 1px solid var(--spg-medium-gray); }
.card-gray hr { border-color: rgba(0, 0, 0, 0.1); margin: 15px 0; width: 100%; }
.card-role { font-size: 0.9em; font-style: italic; font-weight: bold; }
.step-number {
    display: inline-block; width: 40px; height: 40px; line-height: 40px; background: var(--spg-blue); color: var(--spg-white);
    border-radius: 50%; font-weight: bold; font-size: 1.2em; margin-bottom: 15px;
}

/* --- FRANJAS DE IMAGEN --- */
.image-separator { background-size: cover; background-position: center center; color: var(--spg-white); padding: 80px 0; position: relative; text-align: center; }
#vision-segura { background-image: url('camiones-gestion.jpg'); }
#capacitacion-terreno { background-image: url('camion-carretera.jpg'); }
.image-overlay {
    position: relative; z-index: 2; background-color: rgba(0, 0, 0, 0.6); padding: 30px; height: 100%; width: 100%;
    position: absolute; top: 0; left: 0; display: flex; align-items: center; justify-content: center; flex-direction: column;
}
.image-overlay h2 { color: var(--spg-white); font-size: 2em; max-width: 900px; margin: 0; text-shadow: 1px 1px 3px rgba(0,0,0,0.8); line-height: 1.3; }

/* --- TECNOLOGÍA --- */
.section-subtitle { text-align: center; max-width: 700px; margin: 0 auto 50px auto; font-size: 1.1em; color: #666; }
.tech-item { display: flex; align-items: center; justify-content: space-between; gap: 50px; margin-bottom: 60px; }
.tech-item-reverse { flex-direction: row-reverse; }
.tech-image { flex: 1; }
.tech-image img { width: 100%; border-radius: 10px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); transition: transform 0.3s ease; }
.tech-image img:hover { transform: translateY(-5px); }
.tech-content { flex: 1; text-align: left; }
.tech-content h3 { text-align: left; font-size: 1.8em; margin-bottom: 20px; }
.tech-content h3 i { margin-right: 10px; }
.tech-list { list-style: none; padding: 0; }
.tech-list li { margin-bottom: 12px; font-size: 1.05em; }
.tech-list li i { color: #25D366; margin-right: 10px; }
.feature-divider { border: 0; height: 1px; background: #ddd; margin: 60px auto; width: 80%; }

/* --- EQUIPO --- */
.team-grid { display: flex; justify-content: center; gap: 30px; margin-top: 40px; flex-wrap: wrap; }
.profile-card {
    background: var(--spg-light-gray); padding: 30px; border-radius: 8px; box-shadow: 0 3px 6px rgba(0,0,0,0.1);
    max-width: 450px; width: 100%; display: flex; flex-direction: column; align-items: center; text-align: center; transition: transform 0.3s ease;
}
.profile-card:hover { transform: translateY(-5px); box-shadow: 0 8px 16px rgba(0,0,0,0.15); }
.profile-pic { width: 120px; height: 120px; border-radius: 50%; object-fit: cover; border: 4px solid var(--spg-blue); margin-bottom: 15px; }

/* --- CLIENTES --- */
.marquee-container {
    width: 100%; overflow: hidden; white-space: nowrap; padding: 20px 0; background: var(--spg-medium-gray);
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent); -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}
.marquee-track { display: inline-block; animation: marquee 30s linear infinite; }
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.marquee-track:hover { animation-play-state: paused; }
.client-item { display: inline-block; padding: 0 30px; vertical-align: middle; }
.client-item img { height: 60px; width: auto; object-fit: contain; opacity: 1; transition: transform 0.3s ease; }
.client-item img:hover { transform: scale(1.1); }

/* --- FORMULARIO --- */
.contact-form-container { max-width: 800px; margin: 0 auto; padding: 30px; background: var(--spg-light-gray); border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.contact-form { display: flex; flex-wrap: wrap; gap: 20px; }
.form-group { flex: 1 1 calc(50% - 10px); display: flex; flex-direction: column; text-align: left; }
.form-group.full-width { flex: 1 1 100%; }
.contact-form input, .contact-form select, .contact-form textarea { padding: 12px; border: 1px solid var(--spg-medium-gray); border-radius: 4px; font-size: 1em; width: 100%; }
.contact-form button[type="submit"] { margin-top: 10px; width: 100%; }
.cta-section { background: var(--spg-dark-gray); color: var(--spg-white); padding: 50px 0; }
.cta-section h3 { color: var(--spg-white); margin-bottom: 30px; }

/* --- FOOTER --- */
.main-footer { background: var(--spg-dark-gray); color: var(--spg-light-gray); padding: 40px 0 20px; font-size: 0.9em; }
.footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 30px; margin-bottom: 20px; }
.footer-col h3 { text-align: left; color: var(--spg-white); }
.footer-col ul { list-style: none; padding: 0; text-align: left;}
.footer-col p { text-align: left; margin-bottom: 10px; }
.footer-col i { color: var(--spg-blue); margin-right: 10px; }
.footer-col ul li a { color: var(--spg-light-gray); display: block; padding: 5px 0; }
.footer-col ul li a:hover { color: var(--spg-blue); }
.footer-col .social-icon { font-size: 1.5em; color: var(--spg-light-gray); margin-right: 15px;}
.footer-bottom { text-align: center; padding-top: 20px; color: rgba(255,255,255,0.7); font-size: 0.85em;}
.footer-bottom a { color: rgba(255,255,255,0.7); }


/* ==========================================================================
   RESPONSIVE DESIGN (MÓVILES Y TABLETS) - IMPLEMENTACIÓN DE MENÚ HAMBURGUESA
   ========================================================================== */

@media (max-width: 768px) {
    
    /* --- 1. Header Móvil (Hamburguesa) --- */
    .main-header {
        padding: 15px 0;
    }

    .header-content {
        flex-direction: column;
        align-items: stretch; 
        padding: 0 20px;
    }

    .logo-container {
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .logo img { height: 40px; }
    
    /* Mostrar el botón hamburguesa */
    .menu-toggle { display: block; }

    /* Ocultar el botón de WhatsApp de escritorio */
    .desktop-only-wa { display: none; }

    /* Estilos del menú desplegable móvil */
    .main-nav ul {
        display: none; 
        flex-direction: column;
        width: 100%;
        text-align: center;
        padding-top: 20px;
        border-top: 1px solid rgba(255,255,255,0.1);
        margin-top: 15px;
    }

    /* Clase que activa JS para mostrar el menú */
    .main-nav ul.show {
        display: flex;
        animation: slideDown 0.3s ease forwards;
    }

    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .main-nav ul li {
        margin: 0;
        width: 100%;
    }

    .main-nav ul li a {
        display: block;
        padding: 12px 0;
        font-size: 1.1em;
        border-bottom: none; 
    }
    .main-nav ul li a:hover, .main-nav ul li a.active {
         border-bottom: none; color: var(--spg-blue);
    }

    /* Botón WhatsApp integrado en menú móvil */
    .mobile-only-wa { display: block; margin-top: 15px; }
    .wa-link-mobile {
        background: #25D366; color: white !important; display: inline-flex !important;
        align-items: center; justify-content: center; gap: 8px; padding: 10px 20px !important;
        border-radius: 50px; width: auto !important; margin: 0 auto;
    }


    /* --- 2. Ajustes Generales de Contenido en Móvil --- */
    h1 { font-size: 1.8em; } h2 { font-size: 1.6em; } h3 { font-size: 1.4em; }
    .container { width: 92%; padding: 30px 0; }
    .section-gray, .section-white, .page-hero-services { padding: 40px 15px; }

    /* Hero */
    .hero-section { padding: 80px 15px; }
    .hero-content h1 { font-size: 2em; }
    .hero-content p { font-size: 1.1em; }

    /* Grillas a 1 columna y reducción de iconos */
    .features-grid, .iso-grid, .methodology-grid { grid-template-columns: 1fr; gap: 25px; padding: 0 10px; }
    .feature-item i, .iso-card i, .tech-content i { font-size: 2.5em; } /* Iconos más chicos */
    
    /* Tecnología */
    .tech-item, .tech-item-reverse { flex-direction: column; gap: 30px; padding: 0 15px; }
    .tech-content h3 { text-align: center; }
    .image-separator { padding: 60px 15px; }
    .image-overlay h2 { font-size: 1.4em; }

    /* Ajuste para imagen de Servicios en móvil */
    .hero-service-img {
        margin-top: 30px;
        border-width: 2px;
    }

    /* Formulario y Footer */
    .contact-form-container { padding: 25px 20px; }
    .form-group { flex: 1 1 100%; }
    .btn-large { width: 100%; }
    .footer-content { grid-template-columns: 1fr; text-align: center; padding: 0 20px 30px; }
    .footer-col h3, .footer-col p, .footer-col ul, .footer-col .social-icon { text-align: center; }
    
    /* Carrusel móvil */
    .client-item img { height: 50px; padding: 0 15px; }
}