/* Variables de colores - Paleta: Blanco, Gris, Negro, Rojo */
    :root {
        --primary-white: #FFFFFF;
        --light-gray: #F5F5F5;
        --medium-gray: #E0E0E0;
        --dark-gray: #757575;
        --darker-gray: #424242;
        --black: #212121;
        --red: #DC3545;
        --dark-red: #C82333;
        --image-overlay: linear-gradient(to bottom, rgba(220, 53, 69, 0.1), rgba(33, 33, 33, 0.4));
        --card-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
        --hover-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
    }
    
    /* Estilos generales - FONDO BLANCO */
    .recursos-serverbox {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        background-color: var(--primary-white);
        padding: 80px 20px;
        color: var(--black);
        line-height: 1.6;
    }
    
    .container {
        max-width: 1200px;
        margin: 0 auto;
    }
    
    /* Encabezado de la sección */
    .section-header {
        text-align: center;
        margin-bottom: 60px;
        position: relative;
    }
    
    .header-decorative {
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 25px;
    }
    
    .decorative-line {
        width: 60px;
        height: 2px;
        background-color: var(--red);
        display: block;
    }
    
    .decorative-dot {
        width: 8px;
        height: 8px;
        background-color: var(--red);
        border-radius: 50%;
        margin: 0 15px;
        display: block;
    }
    
    .section-title {
        font-size: 2.8rem;
        font-weight: 700;
        margin-bottom: 20px;
        color: var(--black);
        letter-spacing: -0.5px;
        line-height: 1.2;
    }
    
    .title-highlight {
        color: var(--red);
        position: relative;
        display: inline-block;
    }
    
    .title-highlight::after {
        content: '';
        position: absolute;
        bottom: 5px;
        left: 0;
        width: 100%;
        height: 8px;
        background-color: rgba(220, 53, 69, 0.15);
        z-index: -1;
    }
    
    .section-description {
        font-size: 1.1rem;
        color: var(--darker-gray);
        max-width: 800px;
        margin: 0 auto;
        padding: 0 20px;
    }
    
    /* Grid de recursos */
    .recursos-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
        gap: 30px;
        margin-bottom: 60px;
    }
    
    /* Tarjetas de recursos - FONDO BLANCO con bordes grises */
    .recurso-card {
        background-color: var(--primary-white);
        border-radius: 12px;
        overflow: hidden;
        box-shadow: var(--card-shadow);
        transition: all 0.4s ease;
        position: relative;
        display: flex;
        flex-direction: column;
        height: 100%;
        border: 1px solid var(--medium-gray);
    }
    
    .recurso-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--hover-shadow);
        border-color: var(--red);
    }
    
    .card-badge {
        position: absolute;
        top: 15px;
        right: 15px;
        background-color: var(--red);
        color: var(--primary-white);
        padding: 6px 14px;
        border-radius: 20px;
        font-size: 0.8rem;
        font-weight: 600;
        letter-spacing: 0.5px;
        text-transform: uppercase;
        z-index: 10;
        box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
    }
    
    /* Contenedor de imagen */
    .card-image-container {
        position: relative;
        height: 200px;
        overflow: hidden;
    }
    
    .card-image {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    
    .recurso-card:hover .card-image {
        transform: scale(1.08);
    }
    
    .image-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: var(--image-overlay);
        z-index: 1;
    }
    
    .card-content {
        padding: 25px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
    }
    
    .card-title {
        font-size: 1.5rem;
        font-weight: 700;
        margin-bottom: 12px;
        color: var(--black);
    }
    
    .card-description {
        color: var(--darker-gray);
        margin-bottom: 20px;
        flex-grow: 1;
    }
    
    /* Detalles con iconos de imagen */
    .card-details {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-top: 15px;
        margin-top: auto;
        margin-bottom: 20px;
        border-top: 1px solid var(--light-gray);
    }
    
    .detail-item {
        display: flex;
        align-items: center;
        font-size: 0.85rem;
        color: var(--dark-gray);
    }
    
    .detail-icon {
        width: 16px;
        height: 16px;
        margin-right: 6px;
        object-fit: contain;
        filter: grayscale(100%) brightness(0.6);
    }
    
    .detail-item.version {
        background-color: var(--light-gray);
        padding: 4px 12px;
        border-radius: 12px;
        font-weight: 600;
        color: var(--darker-gray);
    }
    
    /* Botón de descarga */
    .download-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: var(--black);
        color: var(--primary-white);
        padding: 16px;
        text-decoration: none;
        font-weight: 600;
        letter-spacing: 0.5px;
        transition: all 0.3s ease;
        border-radius: 8px;
        position: relative;
        overflow: hidden;
        margin-top: auto;
    }
    
    .download-btn:hover {
        background-color: var(--red);
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(220, 53, 69, 0.25);
    }
    
    .download-btn::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
        transition: left 0.7s ease;
    }
    
    .download-btn:hover::before {
        left: 100%;
    }
    
    .btn-text {
        margin-right: 10px;
        font-size: 0.95rem;
    }
    
    .btn-icon {
        display: flex;
        align-items: center;
    }
    
    .download-icon {
        width: 18px;
        height: 18px;
        object-fit: contain;
        filter: brightness(0) invert(1);
    }
    
    /* Sección Unlock - Estilos mejorados */
    .unlock-section {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        background-color: var(--light-gray);
        padding: 60px 20px;
        color: var(--black);
    }
    
    .unlock-container {
        max-width: 1200px;
        margin: 0 auto;
    }
    
    .unlock-card {
        background-color: var(--primary-white);
        border-radius: 12px;
        overflow: hidden;
        box-shadow: var(--card-shadow);
        display: grid;
        grid-template-columns: 1fr 1fr;
        min-height: 300px;
        border: 1px solid var(--medium-gray);
        position: relative;
    }
    
    .unlock-badge {
        position: absolute;
        top: 20px;
        right: 20px;
        z-index: 20;
    }
    
    .unlock-image {
        height: 100%;
    }
    
    .unlock-image .card-image {
        height: 100%;
        width: 100%;
    }
    
    .unlock-content {
        padding: 40px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    
    .unlock-title {
        font-size: 2rem;
        font-weight: 700;
        margin-bottom: 20px;
        color: var(--black);
        line-height: 1.3;
    }
    
    .unlock-title .highlight {
        color: var(--red);
        position: relative;
        display: inline-block;
    }
    
    .unlock-title .highlight::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 0;
        width: 100%;
        height: 6px;
        background-color: rgba(220, 53, 69, 0.15);
        z-index: -1;
    }
    
    .unlock-description {
        color: var(--darker-gray);
        margin-bottom: 25px;
        font-size: 1.1rem;
        line-height: 1.6;
    }
    
    .unlock-contact {
        display: flex;
        align-items: center;
        margin-bottom: 30px;
        padding: 12px 20px;
        background-color: var(--light-gray);
        border-radius: 10px;
        border: 1px solid var(--medium-gray);
    }
    
    .contact-icon {
        width: 24px;
        height: 24px;
        margin-right: 12px;
        object-fit: contain;
    }
    
    .contact-number {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--black);
    }
    
    .unlock-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: var(--black);
        color: var(--primary-white);
        padding: 18px;
        text-decoration: none;
        font-weight: 600;
        letter-spacing: 0.5px;
        transition: all 0.3s ease;
        border-radius: 10px;
        position: relative;
        overflow: hidden;
        font-size: 1.1rem;
    }
    
    .unlock-btn:hover {
        background-color: var(--red);
        transform: translateY(-2px);
        box-shadow: 0 10px 25px rgba(220, 53, 69, 0.3);
    }
    
    .unlock-btn::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
        transition: left 0.7s ease;
    }
    
    .unlock-btn:hover::before {
        left: 100%;
    }
    
    .unlock-btn .btn-text {
        margin-right: 12px;
        font-size: 1rem;
    }
    
    .contact-btn-icon {
        width: 20px;
        height: 20px;
        object-fit: contain;
        filter: brightness(0) invert(1);
    }
    
    /* Responsive Design */
    @media (max-width: 1200px) {
        .recursos-grid {
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        }
    }
    
    @media (max-width: 992px) {
        .recursos-grid {
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        }
        
        .card-image-container {
            height: 180px;
        }
        
        .section-title {
            font-size: 2.4rem;
        }
        
        .unlock-card {
            grid-template-columns: 1fr;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .unlock-image {
            height: 250px;
        }
    }
    
    @media (max-width: 768px) {
        .recursos-serverbox, .unlock-section {
            padding: 50px 15px;
        }
        
        .section-title {
            font-size: 2rem;
        }
        
        .section-description {
            font-size: 1rem;
            padding: 0 10px;
        }
        
        .recursos-grid {
            grid-template-columns: 1fr;
            gap: 25px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .card-image-container {
            height: 200px;
        }
        
        .unlock-content {
            padding: 30px;
        }
        
        .unlock-title {
            font-size: 1.7rem;
        }
    }
    
    @media (max-width: 480px) {
        .section-title {
            font-size: 1.8rem;
        }
        
        .card-content {
            padding: 20px;
        }
        
        .card-title {
            font-size: 1.3rem;
        }
        
        .card-image-container {
            height: 170px;
        }
        
        .card-details {
            flex-wrap: wrap;
            gap: 12px;
        }
        
        .detail-item {
            font-size: 0.8rem;
        }
        
        .detail-icon {
            width: 14px;
            height: 14px;
        }
        
        .unlock-content {
            padding: 25px;
        }
        
        .unlock-title {
            font-size: 1.5rem;
        }
        
        .unlock-description {
            font-size: 1rem;
        }
        
        .contact-number {
            font-size: 1rem;
        }
        
        .btn-text {
            font-size: 0.9rem;
        }
    }
    
    @media (max-width: 360px) {
        .card-image-container {
            height: 150px;
        }
        
        .recursos-grid {
            gap: 20px;
        }
        
        .section-title {
            font-size: 1.6rem;
        }
        
        .unlock-content {
            padding: 20px;
        }
    }