/* ==========================================================================
   TEB ESPECIALIZADOS — SISTEMA DE DISEÑO INDUSTRIAL & IDENTIDAD VISUAL
   Estética: Heavy-Duty Logistics & Industrial Precision
   Paleta: Oro TEBSA (#c99e4b), Rojo Viper (#c21a32), Negro Chasis (#101216)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@600;700;800;900&family=Barlow:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

/* =========================================
   Variables de Marca y Tokens de Color
   ========================================= */
:root {
    /* Colores Principales de Marca */
    --rojo-viper: #c21a32;
    --rojo-viper-hover: #a11428;
    --dorado-teb: #c99e4b;
    --dorado-teb-hover: #b38836;
    --dorado-claro: #f4e8c1;
    
    /* Escala Industrial de Oscuros (Chasis & Asfalto) */
    --negro-carbon: #0e1014;
    --negro-mate: #14171d;
    --negro-superficie: #1c2028;
    --gris-chasis: #272d38;
    --gris-borde: #373f4e;
    
    /* Escala Neutra y Textos */
    --gris-asfalto: #334155;
    --gris-tecnico: #64748b;
    --gris-claro: #94a3b8;
    --acero-suave: #e2e8f0;
    --blanco-crudo: #f8fafc;
    --blanco-puro: #ffffff;

    /* Tipografías */
    --fuente-display: 'Barlow Condensed', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --fuente-cuerpo: 'Barlow', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Sombras & Transiciones */
    --sombra-industrial: 0 4px 20px -2px rgba(14, 16, 20, 0.08), 0 2px 6px -1px rgba(14, 16, 20, 0.04);
    --sombra-elevada: 0 12px 30px -4px rgba(14, 16, 20, 0.16);
    --borde-radio-tecnico: 4px;
    --transicion-suave: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* =========================================
   Reset y Fundamentos
   ========================================= */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--blanco-crudo);
}

body {
    font-family: var(--fuente-cuerpo);
    font-weight: 400;
    line-height: 1.65;
    color: var(--gris-asfalto);
    background-color: var(--blanco-crudo);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =========================================
   Tipografía con Carácter Industrial
   ========================================= */
h1, h2, h3, h4, .titular-industrial {
    font-family: var(--fuente-display);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-weight: 800;
    color: var(--negro-carbon);
    line-height: 1.15;
}

h1 {
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 900;
}

h2 {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    margin-top: 2rem;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

h3::after {
    content: "";
    display: block;
    width: 48px;
    height: 4px;
    background: var(--dorado-teb);
    margin-top: 8px;
}

h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--negro-carbon);
}

p {
    margin-bottom: 1.25rem;
    font-size: 1.05rem;
    color: var(--gris-asfalto);
}

/* Etiqueta distintiva de marca */
.teb-especializados {
    font-family: var(--fuente-display);
    font-weight: 800;
    letter-spacing: 0.04em;
    color: var(--negro-carbon);
}

/* Enlaces editoriales */
a.link-interno, p a, li a:not(.nav-item):not(.nav-lang):not(.nav-login-icon) {
    color: var(--rojo-viper);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid rgba(194, 26, 50, 0.3);
    transition: var(--transicion-suave);
}

a.link-interno:hover, p a:hover, li a:not(.nav-item):not(.nav-lang):not(.nav-login-icon):hover {
    color: var(--dorado-teb);
    border-bottom-color: var(--dorado-teb);
}

/* Listas Técnicas */
ul:not(.nav-links) {
    list-style: none;
    margin-bottom: 1.5rem;
}

ul:not(.nav-links) li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.6rem;
    color: var(--gris-asfalto);
    font-size: 1rem;
}

ul:not(.nav-links) li::before {
    content: "■";
    position: absolute;
    left: 0;
    top: 0.15em;
    color: var(--dorado-teb);
    font-size: 0.75rem;
}

/* =========================================
   Barra de Navegación (Header)
   ========================================= */
.navbar {
    background-color: var(--blanco-puro);
    border-bottom: 1px solid var(--acero-suave);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

/* Franja superior tricolor sutil */
.navbar::before {
    content: "";
    display: block;
    height: 4px;
    width: 100%;
    background: linear-gradient(90deg, var(--rojo-viper) 0%, var(--rojo-viper) 30%, var(--dorado-teb) 30%, var(--dorado-teb) 100%);
}

.nav-container {
    max-width: 1240px;
    width: 100%;
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo img {
    height: 48px;
    width: auto;
    display: block;
    transition: transform 0.2s ease;
}

.nav-logo img:hover {
    transform: scale(1.02);
}

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 24px;
    margin: 0;
    padding: 0;
}

.nav-links li {
    margin: 0;
    padding: 0;
}

.nav-links li::before {
    content: none !important;
}

.nav-item {
    font-family: var(--fuente-display);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--gris-asfalto);
    text-decoration: none;
    padding: 6px 2px;
    position: relative;
    transition: color 0.2s ease;
}

.nav-item::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--dorado-teb);
    transition: width 0.2s ease;
}

.nav-item:hover {
    color: var(--negro-carbon);
}

.nav-item:hover::after, .nav-item.active::after {
    width: 100%;
}

.nav-item.active {
    color: var(--rojo-viper);
}

.nav-item.active::after {
    background-color: var(--rojo-viper);
}

.nav-lang {
    font-family: var(--fuente-display);
    font-weight: 800;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-decoration: none;
    color: var(--negro-carbon);
    border: 1.5px solid var(--gris-borde);
    padding: 4px 10px;
    border-radius: var(--borde-radio-tecnico);
    transition: var(--transicion-suave);
}

.nav-lang:hover {
    border-color: var(--dorado-teb);
    background-color: var(--dorado-teb);
    color: var(--negro-carbon);
}

.nav-login-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--gris-tecnico);
    text-decoration: none;
    padding: 6px;
    border-radius: var(--borde-radio-tecnico);
    transition: var(--transicion-suave);
}

.nav-login-icon svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.nav-login-icon:hover {
    color: var(--dorado-teb);
    background-color: rgba(201, 158, 75, 0.1);
}

.nav-login-icon.active {
    color: var(--rojo-viper);
}

/* =========================================
   Sección Hero de Alto Impacto
   ========================================= */
.hero-inicio {
    position: relative;
    background-image: 
        linear-gradient(135deg, rgba(14, 16, 20, 0.92) 0%, rgba(14, 16, 20, 0.78) 55%, rgba(14, 16, 20, 0.88) 100%), 
        url('assets/camiones-dorados.png');
    background-size: cover;
    background-position: center 50%;
    background-repeat: no-repeat;
    min-height: 560px;
    display: flex;
    align-items: center;
    padding: 60px 24px;
    border-bottom: 4px solid var(--dorado-teb);
}

.hero-contenido {
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

/* Badge de Operaciones / Localidad */
.badge-operativo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(201, 158, 75, 0.15);
    border: 1px solid var(--dorado-teb);
    color: var(--dorado-claro);
    font-family: var(--fuente-display);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 6px 14px;
    border-radius: var(--borde-radio-tecnico);
    margin-bottom: 20px;
}

.badge-operativo::before {
    content: "";
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--dorado-teb);
}

.hero-contenido h1 {
    color: var(--blanco-puro);
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.hero-contenido p {
    font-size: 1.25rem;
    color: #cbd5e1;
    max-width: 720px;
    margin-bottom: 35px;
    line-height: 1.6;
}

.hero-acciones {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
}

/* =========================================
   Botones de Acción (CTAs)
   ========================================= */
.btn-primario {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--rojo-viper);
    color: var(--blanco-puro);
    font-family: var(--fuente-display);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 14px 32px;
    border-radius: var(--borde-radio-tecnico);
    border: 2px solid var(--rojo-viper);
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(194, 26, 50, 0.35);
    transition: var(--transicion-suave);
}

.btn-primario:hover {
    background-color: var(--rojo-viper-hover);
    border-color: var(--rojo-viper-hover);
    color: var(--blanco-puro);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(194, 26, 50, 0.45);
}

.btn-primario:active {
    transform: translateY(0);
}

.btn-secundario {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--blanco-puro);
    font-family: var(--fuente-display);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: var(--borde-radio-tecnico);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: var(--transicion-suave);
}

.btn-secundario:hover {
    border-color: var(--dorado-teb);
    color: var(--dorado-teb);
    background: rgba(201, 158, 75, 0.1);
}

/* =========================================
   Franja de Métricas Operativas (KPI Strip)
   ========================================= */
.franja-metricas {
    background-color: var(--negro-carbon);
    border-bottom: 1px solid var(--gris-borde);
    padding: 30px 20px;
    color: var(--blanco-puro);
}

.franja-contenedor {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.metrica-item {
    padding: 10px 16px;
    border-left: 3px solid var(--dorado-teb);
}

.metrica-valor {
    font-family: var(--fuente-display);
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    font-weight: 900;
    color: var(--dorado-teb);
    line-height: 1;
    margin-bottom: 4px;
    letter-spacing: 0.02em;
}

.metrica-etiqueta {
    font-family: var(--fuente-display);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--blanco-puro);
    line-height: 1.2;
}

.metrica-desc {
    font-size: 0.85rem;
    color: var(--gris-tecnico);
    margin-top: 4px;
    margin-bottom: 0;
}

/* =========================================
   Contenedor Principal y Estructura Editorial
   ========================================= */
.contenedor-sitio {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 24px;
}

.seccion-editorial {
    margin-bottom: 60px;
}

.lead-industrial {
    font-size: 1.3rem;
    font-weight: 500;
    line-height: 1.6;
    color: var(--negro-carbon);
    margin-bottom: 25px;
    border-left: 4px solid var(--rojo-viper);
    padding-left: 20px;
}

/* =========================================
   Cuadrícula de Capacidades y Flota
   ========================================= */
.seccion-titulo-bloque {
    margin-bottom: 35px;
}

.subtitulo-industrial {
    font-family: var(--fuente-display);
    font-weight: 700;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--dorado-teb);
    margin-bottom: 4px;
}

.cuadricula-flota {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 30px;
    margin-bottom: 50px;
}

/* =========================================
   Tarjetas Apiladas con Scroll (Sticky Stacking Cards)
   ========================================= */
.contenedor-tarjetas-stack {
    position: relative;
    display: block;
    margin-top: 35px;
    margin-bottom: 20px;
    padding-bottom: 20px;
}

#flota-capacidades {
    margin-bottom: 20px;
}

.tarjeta-stack {
    position: sticky;
    top: calc(85px + (var(--card-index, 1) - 1) * 55px);
    z-index: var(--card-index, 1);
    background-color: var(--blanco-puro);
    border: 1px solid var(--acero-suave);
    border-radius: var(--borde-radio-tecnico);
    padding: 30px 40px 36px 40px;
    box-shadow: 0 12px 30px -5px rgba(14, 16, 20, 0.16), 0 2px 6px -1px rgba(14, 16, 20, 0.06);
    overflow: hidden;
    transition: var(--transicion-suave);
    margin-bottom: 30px;
}

/* Ceja homogénea para todas las tarjetas (Gris chasis base) */
.tarjeta-stack::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background-color: var(--gris-chasis);
    transition: background-color 0.3s ease;
}

/* Solo la tarjeta activa al frente resalta en dorado TEBSA */
.tarjeta-stack.tarjeta-activa::before {
    background-color: var(--dorado-teb);
}

.tarjeta-stack-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--acero-suave);
    padding-bottom: 14px;
}

.tarjeta-stack-header h4 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--negro-carbon);
    letter-spacing: 0.03em;
}

.tarjeta-stack-header .tarjeta-insignia {
    margin-bottom: 0;
    text-align: right;
    font-size: 0.85rem;
    color: var(--dorado-teb);
}

.tarjeta-stack-cuerpo {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 36px;
    align-items: start;
    margin-top: 22px;
}

.tarjeta-stack-info p {
    font-size: 1.05rem;
    line-height: 1.65;
    color: var(--gris-asfalto);
    margin-bottom: 0;
}

.tarjeta-stack-specs {
    background-color: var(--blanco-crudo);
    border: 1px solid var(--acero-suave);
    border-left: 4px solid var(--dorado-teb);
    padding: 22px 24px;
    border-radius: var(--borde-radio-tecnico);
}

.tarjeta-stack-specs-titulo {
    font-family: var(--fuente-display);
    font-size: 0.95rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--negro-carbon);
    margin-bottom: 12px;
}

.tarjeta-stack-specs ul {
    margin-bottom: 0;
}

.tarjeta-stack-specs ul li {
    font-size: 0.95rem;
    line-height: 1.55;
    margin-bottom: 8px;
}

.tarjeta-stack-specs ul li:last-child {
    margin-bottom: 0;
}

.tarjeta-tecnica {
    background-color: var(--blanco-puro);
    border: 1px solid var(--acero-suave);
    border-radius: var(--borde-radio-tecnico);
    padding: 30px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--sombra-industrial);
    position: relative;
    overflow: hidden;
    transition: var(--transicion-suave);
}

.tarjeta-tecnica::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--gris-borde);
    transition: background-color 0.25s ease;
}

.tarjeta-tecnica:hover {
    transform: translateY(-4px);
    box-shadow: var(--sombra-elevada);
    border-color: #cbd5e1;
}

.tarjeta-tecnica:hover::before {
    background-color: var(--dorado-teb);
}

.tarjeta-insignia {
    font-family: var(--fuente-display);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--dorado-teb);
    margin-bottom: 8px;
}

.tarjeta-tecnica h4 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 1.35rem;
}

.tarjeta-tecnica p {
    font-size: 0.95rem;
    color: var(--gris-tecnico);
    margin-bottom: 16px;
}

.tarjeta-tecnica ul {
    margin-bottom: 0;
    margin-top: auto;
}

.tarjeta-tecnica ul li {
    font-size: 0.9rem;
    line-height: 1.5;
    padding-left: 18px;
    margin-bottom: 6px;
}

.tarjeta-tecnica ul li::before {
    font-size: 0.65rem;
}

/* =========================================
   Sección de Seguridad y Rastreo Satelital (GPS)
   ========================================= */
.modulo-rastreo {
    background: var(--negro-carbon);
    border-radius: var(--borde-radio-tecnico);
    color: var(--blanco-puro);
    padding: 48px;
    margin: 20px 0 60px 0;
    border-left: 6px solid var(--dorado-teb);
    box-shadow: var(--sombra-elevada);
}

.rastreo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.rastreo-texto h3 {
    color: var(--blanco-puro);
    margin-top: 0;
}

.rastreo-texto h3::after {
    background-color: var(--dorado-teb);
}

.rastreo-texto p {
    color: #cbd5e1;
    font-size: 1.05rem;
}

.rastreo-puntos {
    margin-top: 20px;
}

.rastreo-puntos li {
    color: #e2e8f0 !important;
}

.rastreo-imagen {
    position: relative;
    border-radius: var(--borde-radio-tecnico);
    overflow: hidden;
    border: 1px solid var(--gris-borde);
    box-shadow: 0 8px 25px rgba(0,0,0,0.4);
}

.rastreo-imagen img {
    width: 100%;
    height: 100%;
    max-height: 360px;
    object-fit: cover;
    display: block;
}

/* =========================================
   Sección de Historia y Fundador
   ========================================= */
.modulo-historia {
    background-color: var(--blanco-puro);
    border: 1px solid var(--acero-suave);
    border-radius: var(--borde-radio-tecnico);
    padding: 48px;
    margin-bottom: 60px;
    box-shadow: var(--sombra-industrial);
}

.historia-fundador-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 40px;
    align-items: start;
    margin-top: 30px;
    margin-bottom: 40px;
}

.fundador-tarjeta-foto {
    background-color: var(--blanco-crudo);
    border: 1px solid var(--acero-suave);
    padding: 16px;
    border-radius: var(--borde-radio-tecnico);
    text-align: center;
}

.fundador-tarjeta-foto img {
    width: 100%;
    height: auto;
    border-radius: 2px;
    display: block;
    margin-bottom: 12px;
    border-bottom: 3px solid var(--dorado-teb);
}

.fundador-pie {
    font-family: var(--fuente-display);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--negro-carbon);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.fundador-subpie {
    font-size: 0.85rem;
    color: var(--gris-tecnico);
}

/* Álbum Dinámico / Carrusel de Infraestructura e Historia */
.carrusel-infraestructura, .carrusel-historia {
    position: relative;
    max-width: 900px;
    margin: 35px auto 0 auto;
    overflow: hidden;
    border-radius: var(--borde-radio-tecnico);
    box-shadow: var(--sombra-elevada);
    border: 1px solid var(--gris-borde);
    background-color: var(--negro-carbon);
}

.carrusel-contenedor {
    display: flex;
    transition: transform 0.45s cubic-bezier(0.2, 1, 0.3, 1);
    width: 100%;
}

.carrusel-img {
    width: 100%;
    height: 480px;
    flex-shrink: 0;
    object-fit: cover;
    display: block;
}

.carrusel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(14, 16, 20, 0.75);
    color: var(--blanco-puro);
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    border-radius: var(--borde-radio-tecnico);
    transition: var(--transicion-suave);
    z-index: 10;
}

.carrusel-btn:hover {
    background-color: var(--rojo-viper);
    border-color: var(--rojo-viper);
}

.carrusel-btn.prev {
    left: 16px;
}

.carrusel-btn.next {
    right: 16px;
}

/* =========================================
   Banner de Llamado a la Acción (CTA Final)
   ========================================= */
.banner-cta-final {
    background: linear-gradient(135deg, var(--negro-carbon) 0%, var(--negro-superficie) 100%);
    border: 1px solid var(--gris-borde);
    border-left: 6px solid var(--rojo-viper);
    border-radius: var(--borde-radio-tecnico);
    padding: 50px 40px;
    text-align: center;
    color: var(--blanco-puro);
    margin-top: 40px;
    box-shadow: var(--sombra-elevada);
}

.banner-cta-final h3 {
    color: var(--blanco-puro);
    margin-top: 0;
    margin-bottom: 12px;
}

.banner-cta-final h3::after {
    margin: 8px auto 0 auto;
}

.banner-cta-final p {
    color: #cbd5e1;
    font-size: 1.15rem;
    max-width: 650px;
    margin: 0 auto 30px auto;
}

.banner-cta-botones {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* Compatibilidad con clase anterior */
.cta-final {
    text-align: center;
    margin-top: 45px;
    margin-bottom: 20px;
}

/* Compatibilidad con contenedor clásico (.tarjeta-blanca) */
.tarjeta-blanca {
    background-color: var(--blanco-puro);
    padding: 40px;
    border-radius: var(--borde-radio-tecnico);
    box-shadow: var(--sombra-industrial);
    border: 1px solid var(--acero-suave);
    width: 100%;
    box-sizing: border-box;
}

/* =========================================
   Páginas de Contacto y Empleo
   ========================================= */
.contacto-wrapper {
    max-width: 1200px;
    width: 100%;
    margin: 40px auto;
    padding: 0 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}

.encabezado-contacto {
    flex: 1 1 100%;
    border-top: 4px solid var(--rojo-viper);
}

.info-contacto {
    flex: 1 1 420px;
    border-left: 4px solid var(--dorado-teb);
}

.formulario-contacto {
    flex: 1 1 460px;
}

.imagen-destacada-contacto {
    flex: 1 1 100%;
}

.imagen-destacada-contacto img {
    width: 100%;
    max-height: 440px;
    object-fit: cover;
    border-radius: var(--borde-radio-tecnico);
    box-shadow: var(--sombra-industrial);
    display: block;
    border: 1px solid var(--acero-suave);
}

/* =========================================
   Formularios e Inputs
   ========================================= */
form {
    display: flex;
    flex-direction: column;
}

label {
    font-family: var(--fuente-display);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 6px;
    color: var(--negro-carbon);
    font-size: 0.95rem;
}

input, select, textarea {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 20px;
    border: 1.5px solid #cbd5e1;
    border-radius: var(--borde-radio-tecnico);
    font-family: var(--fuente-cuerpo);
    font-size: 1rem;
    background-color: var(--blanco-puro);
    color: var(--negro-carbon);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--rojo-viper);
    box-shadow: 0 0 0 3px rgba(194, 26, 50, 0.12);
}

button[type="submit"] {
    background-color: var(--rojo-viper);
    color: var(--blanco-puro);
    border: 2px solid var(--rojo-viper);
    padding: 14px 28px;
    font-family: var(--fuente-display);
    font-size: 1.15rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--borde-radio-tecnico);
    cursor: pointer;
    transition: var(--transicion-suave);
    margin-top: 10px;
    box-shadow: 0 4px 12px rgba(194, 26, 50, 0.3);
}

button[type="submit"]:hover {
    background-color: var(--rojo-viper-hover);
    border-color: var(--rojo-viper-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(194, 26, 50, 0.4);
}

button[type="submit"]:active {
    transform: translateY(0);
}

/* Banners de Notificación de Envío */
.notification-banner {
    padding: 14px 20px;
    margin-bottom: 20px;
    border-radius: var(--borde-radio-tecnico);
    font-weight: 600;
    font-size: 0.95rem;
    text-align: center;
}

.notification-success {
    background-color: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.notification-error {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.notification-info {
    background-color: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* =========================================
   Página de Login
   ========================================= */
body.body-login {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: var(--blanco-crudo);
}

.login-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 50px 20px;
}

.tarjeta-login {
    width: 100%;
    max-width: 440px;
    border-top: 4px solid var(--dorado-teb);
}

/* =========================================
   Pie de Página (Footer)
   ========================================= */
.footer {
    background-color: var(--negro-carbon);
    color: var(--blanco-crudo);
    padding: 60px 24px 24px 24px;
    margin-top: 80px;
    border-top: 4px solid var(--dorado-teb);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 48px;
}

.footer-info p {
    color: #94a3b8;
    max-width: 440px;
    font-size: 0.95rem;
}

.footer-logo-box {
    background-color: var(--blanco-puro);
    display: inline-block;
    padding: 10px 18px;
    border-radius: var(--borde-radio-tecnico);
    margin-bottom: 20px;
}

.footer-logo-box img {
    height: 40px;
    width: auto;
    display: block;
}

.footer-titulo {
    font-family: var(--fuente-display);
    color: var(--dorado-teb);
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 18px;
}

.footer-contacto ul li {
    color: #cbd5e1;
    margin-bottom: 10px;
    padding-left: 0;
}

.footer-contacto ul li::before {
    content: none;
}

.footer-contacto a {
    color: #f1f5f9;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.footer-contacto a:hover {
    color: var(--dorado-teb);
    border-bottom-color: var(--dorado-teb);
}

.footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0 auto;
    padding-top: 24px;
    border-top: 1px solid var(--gris-chasis);
    text-align: center;
    font-size: 0.85rem;
    color: var(--gris-tecnico);
}

/* =========================================
   Adaptaciones Responsivas (Mobile & Tablet)
   ========================================= */
@media (max-width: 900px) {
    .tarjeta-stack-cuerpo {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .franja-contenedor {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .historia-fundador-layout {
        grid-template-columns: 1fr;
    }

    .fundador-tarjeta-foto {
        max-width: 320px;
        margin: 0 auto;
    }

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

    .footer-container {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 640px) {
    .tarjeta-stack {
        position: relative !important;
        top: auto !important;
        padding: 24px 20px;
        margin-bottom: 20px;
    }

    .contenedor-tarjetas-stack {
        padding-bottom: 0;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 14px;
        padding: 14px 16px;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px;
    }

    .hero-inicio {
        padding: 50px 20px;
        min-height: 480px;
    }

    .hero-contenido h1 {
        font-size: 2.25rem;
    }

    .hero-contenido p {
        font-size: 1.1rem;
    }

    .hero-acciones {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-primario, .btn-secundario {
        width: 100%;
        text-align: center;
    }

    .contenedor-sitio, .modulo-historia, .modulo-rastreo {
        padding: 28px 18px;
    }

    .franja-contenedor {
        grid-template-columns: 1fr;
    }

    .tarjeta-stack {
        padding: 24px 20px;
    }

    .carrusel-img {
        height: 280px;
    }

    .contacto-wrapper {
        padding: 0 10px;
    }

    .info-contacto, .formulario-contacto {
        flex: 1 1 100%;
    }
}