/* ====================================
   1. VARIABLES Y RESET BÁSICO
   ==================================== */

:root {
    /* Paleta de colores */
    --color-primary: #003366; 	 	 /* Azul Marino */
    --color-secondary: #007BBF; 	 /* Azul de Acento */
    --color-cta: #FF6600; 	 	 	 /* Naranja/Ámbar para CTAs */
    --color-text: #333333;
    --color-light-bg: #F4F4F4; 	 	 /* Fondo de secciones claras */
    --color-white: #FFFFFF;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
}

/* Contenedor general para centrar el contenido */
main, header, footer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Títulos */
h1, h2, h3, h4 {
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 0.5em;
}


/* ====================================
   2. CABECERA (HEADER) Y NAVEGACIÓN (NAV)
   ==================================== */

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-light-bg);
}

/* ESTILO DEL ICONO EN LA CABECERA */
.header-icon {
    height: 30px; /* Tamaño del icono */
    width: auto;
}

header .logo h1 {
    display: flex; 
    align-items: center; 
    gap: 10px; 
    
    color: var(--color-primary);
    font-size: 1.8em;
    margin: 0;
}

/* Menú de navegación */
nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
}

nav ul li a {
    text-decoration: none;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 1em;
    padding: 5px 0;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--color-secondary);
    border-bottom: 2px solid var(--color-secondary);
}

/* Estilo para el enlace activo en la navegación */
nav ul li a.active {
    color: var(--color-cta); /* Usa el color CTA para resaltar */
    border-bottom: 2px solid var(--color-cta);
}


/* ====================================
   3. SECCIÓN HERO (Principal)
   ==================================== */

#hero {
    background: url('../images/china-venezuela-logistica.jpg') no-repeat center center/cover;
    
    background-color: var(--color-primary); 
    color: var(--color-white);
    padding: 100px 20px;
    text-align: center;
    position: relative; 
}

/* Overlay sutil para mejorar la legibilidad del texto */
#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 51, 102, 0.7); /* Azul Marino con 70% de opacidad */
    z-index: 0;
}

#hero .hero-content {
    position: relative;
    z-index: 1; /* Asegura que el contenido esté sobre el overlay */
}

#hero h2 {
    color: var(--color-white);
    font-size: 2.5em;
    margin-bottom: 15px;
}

#hero p {
    font-size: 1.2em;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Botón de Llamada a la Acción (CTA) */
.cta-button {
    display: inline-block;
    background-color: var(--color-cta);
    color: var(--color-white);
    padding: 12px 30px;
    text-decoration: none;
    font-weight: 700;
    border-radius: 5px;
    transition: background-color 0.3s ease, transform 0.1s;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    border: none; /* Asegurar que no tenga borde de botón por defecto */
}

.cta-button:hover {
    background-color: #e65c00; 
    transform: translateY(-2px);
}

#llamada-accion {
    text-align: center;
    padding: 50px 20px;
    background-color: var(--color-white);
}

#llamada-accion h3 {
    font-size: 1.8em;
    margin-bottom: 10px;
}


/* ====================================
   4. SECCIÓN DE SERVICIOS DESTACADOS (INDEX.HTML)
   ==================================== */

#destacados {
    padding: 60px 20px;
    text-align: center;
    background-color: var(--color-light-bg); 
}

#destacados h3 {
    font-size: 2em;
    margin-bottom: 40px;
    color: var(--color-primary);
}

.servicios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 30px;
}

.servicios-grid article {
    background-color: var(--color-white);
    padding: 30px;
    border-radius: 8px;
    text-align: left;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08); 
    transition: transform 0.3s, box-shadow 0.3s;
    border-top: 5px solid var(--color-secondary); 
}

.servicios-grid article:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.servicios-grid article h4 {
    color: var(--color-secondary);
    font-size: 1.4em;
    margin-bottom: 10px;
}

.servicios-grid article p {
    color: #555555;
}


/* ====================================
   5. PIE DE PÁGINA (FOOTER)
   ==================================== */

footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    padding: 30px 20px;
    font-size: 0.9em;
}

footer a {
    color: var(--color-white);
    text-decoration: none;
    margin: 0 10px;
}

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

.social-links {
    margin-top: 10px;
}

/* ====================================
   6. ESTILOS PÁGINA DE SERVICIOS (SERVICIOS.HTML)
   ==================================== */

#services-intro {
    text-align: center;
    padding: 40px 20px;
    background-color: var(--color-light-bg); 
    margin-bottom: 40px;
}

#services-intro h2 {
    color: var(--color-primary);
    font-size: 2.2em;
}

.service-detail {
    padding: 30px;
    margin-bottom: 40px;
    border-left: 5px solid var(--color-secondary); /* Acento azul */
    background-color: var(--color-white);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.service-detail h3 {
    color: var(--color-primary);
    font-size: 1.8em;
    margin-top: 0;
    margin-bottom: 15px;
}

/* Estilo para las listas de características */
.features-list {
    margin-top: 20px;
    padding-left: 0;
}

.features-list h4 {
    color: var(--color-cta); /* Usa el color de CTA para subtítulos de listas */
    margin-top: 15px;
    margin-bottom: 5px;
    font-size: 1.1em;
}

.features-list ul, .features-list ol {
    list-style-type: disc;
    margin-left: 20px;
    padding-left: 0;
}

.features-list li {
    margin-bottom: 8px;
}

.features-list strong {
    font-weight: 700;
    color: var(--color-secondary);
}

hr {
    border: none;
    height: 1px;
    background-color: var(--color-light-bg);
    margin: 30px 0;
}

/* Estilos para la sección de Valor Agregado */
#valor-agregado {
    padding: 40px 20px;
    text-align: center;
}

#valor-agregado h3 {
    margin-bottom: 30px;
}

.valor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.valor-grid article {
    padding: 20px;
    border: 1px solid var(--color-light-bg);
    border-radius: 8px;
    background-color: #FAFAFA;
}

.valor-grid article h4 {
    color: var(--color-secondary);
}

/* ====================================
   7. ESTILOS PÁGINA CALCULADORA (CALCULADORA.HTML)
   ==================================== */

#calculator-hero {
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: 60px 20px;
    text-align: center;
}

#calculator-hero h2 {
    color: var(--color-white);
    font-size: 2em;
}

#calculator-form-section {
    padding: 40px 20px;
    background-color: var(--color-light-bg);
    display: flex;
    justify-content: center;
}

.calculator-container {
    background-color: var(--color-white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 100%;
}

.calculator-container h3 {
    text-align: center;
    margin-bottom: 25px;
    color: var(--color-secondary);
}

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

.input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--color-primary);
}

.input-group input[type="number"],
.input-group input[type="text"],
.input-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #cccccc;
    border-radius: 4px;
    font-size: 1em;
    transition: border-color 0.3s;
}

.input-group input[type="number"]:focus,
.input-group input[type="text"]:focus,
.input-group select:focus {
    border-color: var(--color-cta);
    outline: none;
}

.input-group small {
    color: #666;
    font-size: 0.85em;
    display: block;
    margin-top: 5px;
}

/* Estilos específicos para las dimensiones */
.dimensions-inputs {
    display: flex;
    gap: 10px;
    align-items: center;
}

.dimensions-inputs input {
    flex-grow: 1;
}

.x-separator {
    font-weight: bold;
    color: var(--color-secondary);
}

/* Estilos de resultados */
.results-box {
    margin-top: 30px;
    padding: 20px;
    background-color: #e6f7ff; /* Fondo azul claro */
    border: 1px solid var(--color-secondary);
    border-radius: 4px;
}

.results-box h4 {
    color: var(--color-primary);
    margin-top: 0;
    border-bottom: 1px dashed #cccccc;
    padding-bottom: 10px;
    margin-bottom: 10px;
}

.results-box p {
    margin-bottom: 8px;
    line-height: 1.4;
}

.results-box strong {
    font-weight: 700;
}

.final-cost {
    font-size: 1.3em;
    color: #008000; /* Verde para el costo final */
    font-weight: bold;
    margin-top: 15px;
}

.disclaimer {
    font-size: 0.8em;
    color: #999;
    margin-top: 15px;
}


/* ====================================
   8. ESTILOS PÁGINA CONTACTO (CONTACTO.HTML)
   ==================================== */

#contact-hero {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 60px 20px;
    text-align: center;
}

#contact-hero h2 {
    color: var(--color-white);
    font-size: 2em;
}

#contact-details-form {
    padding: 40px 20px;
    background-color: var(--color-light-bg);
}

.contact-details-only-container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: var(--color-white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.contact-details-only-container h3 {
    text-align: center;
    color: var(--color-secondary);
    margin-bottom: 30px;
}

.info-map-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr; /* Bloque de info más pequeño, Mapa más grande */
    gap: 40px;
    align-items: start;
}

/* Bloque de Información de Contacto */
.contact-info-block {
    padding-right: 20px;
}

.info-block {
    margin-bottom: 25px;
    padding-left: 15px;
    border-left: 3px solid var(--color-secondary);
}

.info-block h4 {
    color: var(--color-primary);
    font-size: 1.1em;
    margin-bottom: 5px;
}

.info-block p {
    margin-bottom: 3px;
    color: #555;
}

.note-email {
    font-style: italic;
    font-size: 0.9em;
    color: #888;
}

/* Bloque de Mapa */
.map-placeholder-container h4 {
    color: var(--color-cta);
    margin-bottom: 10px;
}

/* Se eliminó .map-note ya que el texto fue eliminado del HTML */


/* ====================================
   9. ESTILOS PÁGINA TRACKING (TRACKING.HTML)
   ==================================== */

#tracking-hero {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 60px 20px;
    text-align: center;
}

#tracking-hero h2 {
    color: var(--color-white);
    font-size: 2em;
}

#tracking-form-section {
    padding: 40px 20px;
    background-color: var(--color-light-bg);
    display: flex;
    justify-content: center;
}

.tracking-container {
    background-color: var(--color-white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    width: 100%;
    text-align: center;
}

.tracking-container h3 {
    color: var(--color-secondary);
    margin-bottom: 25px;
}

/* Estilos para la línea de tiempo (timeline) de tracking */
#history-timeline {
    margin-top: 20px;
    text-align: left;
    padding-left: 10px;
    border-left: 2px solid var(--color-secondary);
}

.timeline-item {
    position: relative;
    margin-bottom: 20px;
    padding-left: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -11px;
    top: 5px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: var(--color-secondary);
    border: 3px solid var(--color-white);
}

.timeline-item h5 {
    font-size: 1em;
    color: var(--color-primary);
    margin-bottom: 2px;
}

.timeline-item p {
    font-size: 0.9em;
    color: #666;
}


/* Media Queries para Responsive Design */
@media (max-width: 900px) {
    .info-map-grid {
        grid-template-columns: 1fr; /* Apilar en Contacto */
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    nav ul {
        flex-wrap: wrap;
        gap: 15px;
    }

    #hero h2 {
        font-size: 2em;
    }

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

    .dimensions-inputs {
        flex-direction: column;
        gap: 5px;
    }
    
    .dimensions-inputs input {
        width: 100%;
    }
    
    .x-separator {
        display: none; 
    }
}