/* Lista de archivos seleccionados en el formulario de contacto */
.file-list {
    list-style: none;
    margin: 15px 0 0 0;
    padding: 0;
    font-size: 0.95em;
}
.file-list li {
    display: flex;
    align-items: center;
    background: #f4f5f7;
    border-radius: 4px;
    padding: 6px 12px;
    margin-bottom: 6px;
    gap: 10px;
}
.file-list .file-thumb {
    width: 32px;
    height: 32px;
    object-fit: cover;
    border-radius: 3px;
    background: #e0e0e0;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3em;
    color: #888;
}
.file-list .remove-file {
    background: none;
    border: none;
    color: #d32f2f;
    font-size: 1.1em;
    cursor: pointer;
    margin-left: 10px;
    transition: color 0.2s;
}
.file-list .remove-file:hover {
    color: #b71c1c;
}
:root {
            --color-primario: #0052CC;
            --color-secundario: #091E42;
            --color-fondo: #FFFFFF;
            --color-fondo-claro: #F4F5F7;
            --color-acento: #4C9AFF;
            --color-exito: #00875A;
            --sombra-suave: 0 4px 15px rgba(9, 30, 66, 0.1);
            --fuente-titular: 'Titillium Web', sans-serif;
            --fuente-texto: 'Roboto', sans-serif;
        }

        body {
            font-family: var(--fuente-texto);
            margin: 0;
            padding: 0;
            background-color: var(--color-fondo);
            color: var(--color-secundario);
            line-height: 1.7;
            scroll-behavior: smooth;
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 20px;
        }

        h1, h2, h3, h4 {
            font-family: var(--fuente-titular);
            color: var(--color-secundario);
            font-weight: 700;
        }

        h2 { text-align: center; font-size: 2.8rem; margin-bottom: 20px; }
        h3 { font-size: 2rem; }
        
        hr { 
            border: none;
            border-top: 1px solid #dfe1e6;
            margin: 30px 0;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto 60px;
            color: #5E6C84;
        }

        .navbar {
            background-color: var(--color-fondo);
            padding: 15px 0;
            position: fixed;
            width: 100%;
            top: 0;
            left: 0;
            z-index: 2000; /* Aumentado para asegurar que esté por encima */
            box-shadow: 0 4px 18px 0 rgba(9,30,66,0.10), 0 1.5px 4px 0 rgba(9,30,66,0.04);
            transition: padding 0.3s, height 0.3s;
            height: 110px;
        }

        .navbar.scrolled {
            padding: 2px 0;
            height: 54px;
            box-shadow: 0 2px 8px rgba(9, 30, 66, 0.07);
        }

        .nav-container {
            display: flex;
            justify-content: flex-start;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
        }

        .nav-logo img {
            height: 80px;
            transition: height 0.3s;
            display: block;
            margin: 0 auto;
        }

        .navbar.scrolled .nav-logo img {
            height: 36px;
        }

        .hero {
            background: linear-gradient(rgba(9, 30, 66, 0.6), rgba(9, 30, 66, 0.6)), url('../assets/images/bg-hero.jpg') no-repeat center center/cover;
            padding-top: 120px;
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: var(--color-fondo);
            box-sizing: border-box;
        }

        .hero-content { max-width: 850px; }

        .hero h1 {
            font-size: 4rem;
            margin-bottom: 20px;
            color: var(--color-fondo);
            font-weight: 700;
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: 40px;
            color: rgba(255, 255, 255, 0.9);
        }

        .cta-button {
            background-color: var(--color-primario);
            color: var(--color-fondo);
            padding: 14px 28px;
            text-decoration: none;
            font-weight: bold;
            border-radius: 5px;
            transition: background-color 0.3s, transform 0.3s;
            display: inline-block;
            font-family: var(--fuente-titular);
            font-size: 1rem;
            border: none;
            cursor: pointer;
        }

        .cta-button:hover {
            background-color: var(--color-acento);
            transform: translateY(-3px);
        }
        
        section { padding: 100px 0; }

        .challenges-section { background-color: var(--color-fondo-claro); }

        .challenges-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 20px;
            margin-top: 60px;
        }

        .challenge-card {
            background: var(--color-fondo);
            border-radius: 8px;
            box-shadow: var(--sombra-suave);
            text-align: center;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            display: flex;
            flex-direction: column;
            flex: 1 1 calc(33.333% - 20px); /* Tres tarjetas por fila */
            box-sizing: border-box;
        }

        .challenge-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 25px rgba(9, 30, 66, 0.15);
        }

        .challenge-card img {
            display: block;
            margin: 0 auto;
            max-width: 100%;
            height: auto;
            object-fit: contain;
        }

        .challenge-content { 
            padding: 30px; 
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .challenge-content h3 { font-size: 1.6rem; margin-bottom: 15px; }
        .challenge-content p { flex-grow: 1; }
        .challenge-content .cta-button { font-size: 1rem; padding: 12px 25px; margin-top: 20px; }

        .solution-section {
            padding-bottom: 50px;
        }

        .solution-content {
            display: flex;
            align-items: center;
            gap: 60px;
            margin-top: 40px;
        }

        .solution-content.reverse {
            flex-direction: row-reverse;
        }

        .solution-text {
            flex: 1;
        }

        .solution-image {
            flex: 1;
            text-align: center;
        }

        .solution-image img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: var(--sombra-suave);
        }
        
        .solution-section:last-of-type { border-bottom: none; }
        
        .dual-path-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            margin-top: 60px;
        }
        
        .path-box {
            background-color: var(--color-fondo-claro);
            padding: 40px;
            border-radius: 8px;
            border: 1px solid #dfe1e6;
        }
        
        .path-box h4 {
            margin-top: 0;
            font-size: 1.5rem;
            border-bottom: 2px solid var(--color-primario);
            padding-bottom: 10px;
            display: inline-block;
        }
        
        .form-group { margin-bottom: 20px; }
        .form-group label { display: block; margin-bottom: 8px; font-weight: 600; }
        .form-group input, .form-group textarea, .form-group select, .form-group input[type="file"] {
            width: 100%;
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 5px;
            box-sizing: border-box;
            font-family: var(--fuente-texto);
            font-size: 1rem;
        }
        .form-group textarea { min-height: 120px; resize: vertical; }

        .upload-area {
            background-color: #fff;
            border: 1px solid #ccc;
            padding: 12px 20px;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s, border-color 0.3s;
            display: inline-block;
            text-align: center;
            width: 100%;
            box-sizing: border-box;
        }
        .upload-area:hover { 
            background-color: #e9f2ff;
            border-color: var(--color-acento);
        }
        .upload-area i {
            font-size: 1rem;
            margin-right: 8px;
            margin-bottom: 0;
            color: var(--color-primario);
        }
        .upload-area span { font-weight: 600; }

        #cotizador-stl-file-input { display: none; }
        #cotizador-preview-container { width: 100%; height: 250px; background-color: #e0e0e0; border-radius: 8px; margin-top: 20px; display:flex; align-items:center; justify-content:center; }
        #cotizador-price-result { margin-top: 15px; font-size: 1.8rem; font-weight: bold; color: var(--color-exito); text-align: center; min-height: 30px;}
        
        #payment-form { display: none; margin-top: 20px; }

        .case-study-wrapper { background-color: var(--color-fondo-claro); padding: 80px 0; margin-top: 80px; }
        .case-study-box { background-color: var(--color-fondo); border-radius: 8px; box-shadow: var(--sombra-suave); display: flex; gap: 40px; padding: 40px; align-items: center; border-left: 5px solid var(--color-primario); }
        .case-study-icon { font-size: 4rem; color: var(--color-primario); }
        .case-study-text h4 { margin-top: 0; font-size: 1.3rem; }

        .cta-section { background-color: var(--color-secundario); color: var(--color-fondo); text-align: center; }
        .cta-section h2 { color: var(--color-fondo); }
        .cta-section .section-subtitle { color: rgba(255,255,255,0.8); }
        
        footer { background-color: #041229; color: rgba(255, 255, 255, 0.8); text-align: center; padding: 20px 0; }
        
        /* Estilos para el nuevo flujo de selección guiada */
        .choice-container {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
        }
        .choice-btn {
            flex-grow: 1;
            background-color: #fff;
            border: 1px solid #ccc;
            padding: 12px;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s, border-color 0.3s;
            font-family: var(--fuente-texto);
            font-size: 0.9rem;
            font-weight: 600;
        }
        .choice-btn:hover {
            background-color: #e9f2ff;
            border-color: var(--color-acento);
        }
        .choice-btn.active {
            background-color: var(--color-primario);
            color: white;
            border-color: var(--color-primario);
        }

        .question-step {
            margin-bottom: 25px;
        }

        .step-title {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 15px;
            display: block;
        }
        .step-subtitle {
            font-size: 0.9rem;
            padding: 10px;
            background-color: #e9f2ff;
            border-radius: 5px;
            margin-top: -10px;
            margin-bottom: 15px;
        }

        .choice-grid-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 10px;
        }

        .choice-card {
            border: 1px solid #ccc;
            border-radius: 5px;
            padding: 15px;
            cursor: pointer;
            transition: border-color 0.3s, box-shadow 0.3s;
            position: relative;
            text-align: center;
        }
        .choice-card:hover {
            border-color: var(--color-acento);
        }
        .choice-card.selected {
            border-color: var(--color-primario);
            box-shadow: 0 0 0 2px var(--color-primario);
        }

        .choice-card input[type="radio"], .choice-card input[type="checkbox"] {
            display: none; 
        }

        .choice-card span {
            font-weight: 600;
            display: block;
            margin-bottom: 3px;
            font-size: 0.9rem;
        }
        .choice-card span i {
            margin-right: 8px;
            color: var(--color-primario);
            display: block;
            font-size: 1.5rem;
            margin-bottom: 8px;
        }
        .choice-card.checkbox span i {
            display: inline-block;
            font-size: 1rem;
            margin-bottom: 0;
        }

        .choice-card small {
            font-size: 0.8rem;
            color: #5E6C84;
        }

        .recommendation-box {
            background-color: #e8f5e9; /* Verde claro */
            border-left: 4px solid var(--color-exito);
            padding: 15px;
            margin-top: 20px;
            border-radius: 0 5px 5px 0;
        }
        .recommendation-box h5 {
            margin: 0 0 5px 0;
            font-family: var(--fuente-titular);
            font-size: 1.1rem;
        }
        .recommendation-box p {
            margin: 0;
            font-size: 0.9rem;
        }

        /* Estilos para el icono de información y el modal */
        .material-info-icon {
            color: var(--color-primario);
            cursor: pointer;
            margin-left: 8px;
            transition: color 0.3s;
        }

        .material-info-icon:hover {
            color: var(--color-acento);
        }

        .modal {
            display: none; 
            position: fixed; 
            z-index: 2000; 
            left: 0;
            top: 0;
            width: 100%; 
            height: 100%; 
            overflow: auto; 
            background-color: rgba(0,0,0,0.5); 
            padding-top: 60px;
        }

        .modal-content {
            background-color: #fefefe;
            margin: 5% auto;
            padding: 30px;
            border: 1px solid #888;
            width: 80%;
            max-width: 600px;
            border-radius: 8px;
            box-shadow: var(--sombra-suave);
            position: relative;
        }

        .modal-close-button {
            color: #aaa;
            position: absolute;
            top: 15px;
            right: 25px;
            font-size: 28px;
            font-weight: bold;
            cursor: pointer;
        }

        .modal-close-button:hover,
        .modal-close-button:focus {
            color: black;
        }

        #material-info-content h4 {
            color: var(--color-primario);
            border-bottom: 1px solid #eee;
            padding-bottom: 10px;
            margin-top: 20px;
        }

        #material-info-content p {
            margin-bottom: 20px;
        }


        @media (max-width: 900px) { .dual-path-container { grid-template-columns: 1fr; } }
        @media (max-width: 768px) { 
            h2 { font-size: 2.2rem; } 
            .hero h1 { font-size: 2.8rem; } 
            section { padding: 60px 0; } 
            .case-study-box { flex-direction: column; text-align: center; } 
            .case-study-icon { margin-bottom: 20px; } 
            .guided-options { grid-template-columns: 1fr; }
            .solution-content { flex-direction: column; gap: 30px; }
            .solution-content.reverse { flex-direction: column; }
        }

        /* Nuevos estilos para la sección de contacto */
        .contact-section { 
            background-color: #f0f0f0; 
            color: #333;
        }
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: start;
        }
        .contact-info h2 {
            text-align: left;
        }
        .contact-info .section-subtitle {
            text-align: left;
            margin-left: 0;
            margin-right: 0;
        }
        .contact-details {
            list-style: none;
            padding: 0;
            margin-top: 20px;
        }
        .contact-details li {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
            font-size: 1rem;
        }
        .contact-details i {
            font-size: 1.2rem;
            margin-right: 15px;
            width: 20px;
            text-align: center;
            color: var(--color-primario);
        }
        .contact-form .form-group label {
            font-weight: bold;
            font-size: 0.8rem;
            color: #555;
            text-transform: uppercase;
        }
        .contact-form .form-group input,
        .contact-form .form-group textarea {
            background-color: #fff;
            border: 1px solid #ccc;
            border-radius: 3px;
        }
        .file-drop-area {
            border: 2px dashed #ccc;
            border-radius: 5px;
            padding: 30px;
            text-align: center;
            cursor: pointer;
            transition: background-color 0.2s;
        }
        .file-drop-area:hover {
            background-color: #e9f2ff;
        }
        .file-drop-area .file-msg {
            display: block;
            font-size: 1.2rem;
            font-weight: bold;
        }
        .file-drop-area .file-or {
            display: block;
            margin: 10px 0;
            color: #888;
        }
        .file-drop-area .file-browse {
            color: var(--color-primario);
            text-decoration: underline;
        }
        .file-drop-area input[type="file"] {
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            opacity: 0;
            cursor: pointer;
        }
        .contact-form .cta-button {
            width: 100%;
            padding: 15px;
            font-size: 1.1rem;
        }

        @media (max-width: 900px) {
            .contact-grid {
                grid-template-columns: 1fr;
            }
        }