/* ============================================
   RESET Y VARIABLES
   ============================================ */

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

:root {
    /* Colores principales */
    --color-primary-blue: #1e3a8a;
    --color-secondary-blue: #3b82f6;
    --color-light-blue: #dbeafe;
    --color-dark-gray: #374151;
    --color-medium-gray: #6b7280;
    --color-light-gray: #f3f4f6;
    --color-white: #ffffff;
    
    /* Espaciados */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Tipografía */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    /* Transiciones */
    --transition: all 0.3s ease;
}

body {
    font-family: var(--font-family);
    color: var(--color-dark-gray);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   HEADER
   ============================================ */

.header {
    background-color: var(--color-white);
    padding: var(--spacing-sm) 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header > .container {
    position: relative;
}

.header .container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    justify-self: start;
}

.logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary-blue);
    line-height: 1.2;
}

.logo-img {
    height: 50px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
}

.nav {
    display: flex;
    gap: var(--spacing-md);
    justify-self: center;
}

.nav-link {
    color: var(--color-medium-gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.nav-link:hover {
    color: var(--color-primary-blue);
    background-color: var(--color-light-gray);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-primary-blue);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    position: relative;
    padding: var(--spacing-xl) 0 0 0;
    min-height: 800px;
    overflow: visible;
    padding-bottom: 0;
}

.hero-content {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-text {
    max-width: 800px;
    width: 100%;
    position: relative;
    z-index: 2;
    padding-bottom: 300px;
}

.hero-logo-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.hero-logo-img {
    max-width: 100%;
    width: auto;
    height: auto;
    max-height: 200px;
}

.product-name {
    font-size: 5rem;
    font-weight: 800;
    color: var(--color-primary-blue);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -2px;
}

.product-type {
    font-size: 1.2rem;
    color: var(--color-primary-blue);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.hero-headline {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-dark-gray);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 3rem;
    background-color: transparent;
    color: var(--color-dark-gray);
    text-decoration: none;
    border: 2px solid var(--color-medium-gray);
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary:hover {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
    border-color: var(--color-primary-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3);
}

.hero-product-image {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    margin-top: var(--spacing-lg);
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1200px;
    margin-bottom: 0;
    padding-bottom: 0;
    z-index: 2;
    pointer-events: none;
}

.product-image {
    width: 100%;
    max-width: 400px;
    height: auto;
    max-height: none;
    object-fit: contain;
    object-position: bottom;
    border-radius: 10px;
    position: relative;
    z-index: 2;
    margin-bottom: 0;
    display: block;
    pointer-events: auto;
}

.product-image-placeholder {
    width: 100%;
    max-width: 450px;
    height: 450px;
    background: linear-gradient(135deg, var(--color-secondary-blue), var(--color-light-blue));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 600;
    font-size: 1.2rem;
    box-shadow: 0 20px 60px rgba(59, 130, 246, 0.3);
}

.hero-gradient {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: linear-gradient(to top, var(--color-light-blue), transparent);
    z-index: 1;
}

/* ============================================
   FEATURES SECTION CAROUSEL
   ============================================ */

.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary-blue);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.features-carousel-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) 0;
    max-width: 1200px;
    margin: 0 auto;
}

.features-carousel-wrapper {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.features-carousel-track {
    display: flex;
    align-items: stretch;
    gap: var(--spacing-md);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    width: max-content;
}

.feature-card-carousel {
    flex-shrink: 0;
    width: 500px;
    background-color: var(--color-light-gray);
    padding: var(--spacing-lg);
    border-radius: 16px;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0.4;
    transform: scale(0.85);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 300px;
}

.feature-card-carousel.active {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.feature-card-carousel:not(.active) {
    cursor: pointer;
}

.feature-card-carousel:not(.active):hover {
    opacity: 0.7;
    transform: scale(0.9);
}

.feature-card-carousel h3 {
    font-size: 1.5rem;
    color: var(--color-dark-gray);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    line-height: 1.3;
}

.feature-description {
    font-size: 1rem;
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.download-link {
    display: inline-block;
    margin-top: auto;
    color: var(--color-primary-blue);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-primary-blue);
    border-radius: 8px;
}

.download-link:hover {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
    transform: translateY(-2px);
}

.features-arrow {
    background-color: var(--color-white);
    border: 2px solid var(--color-primary-blue);
    color: var(--color-primary-blue);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 2rem;
    transition: var(--transition);
    flex-shrink: 0;
    z-index: 10;
}

.features-arrow:hover {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
    transform: scale(1.1);
}

.features-arrow:active {
    transform: scale(0.95);
}

.features-arrow span {
    line-height: 1;
    position: relative;
    top: -2px;
}

.features-indicators {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.features-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-medium-gray);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}

.features-indicator.active {
    background-color: var(--color-primary-blue);
    width: 32px;
    border-radius: 6px;
}

.features-indicator:hover {
    background-color: var(--color-secondary-blue);
    transform: scale(1.2);
}

/* ============================================
   PRODUCT GALLERY
   ============================================ */

.product-gallery {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-light-gray);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.gallery-item {
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.gallery-image {
    width: 100%;
    height: 350px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.gallery-placeholder {
    width: 100%;
    height: 350px;
    background: linear-gradient(135deg, var(--color-secondary-blue), var(--color-light-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 600;
    font-size: 1.2rem;
    transition: var(--transition);
}

.gallery-item:hover .gallery-image,
.gallery-item:hover .gallery-placeholder {
    transform: scale(1.05);
}

/* ============================================
   BENEFITS SECTION
   ============================================ */

.benefits {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-light-gray);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    align-items: start;
}

.benefit-item {
    text-align: center;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.benefit-item h3 {
    font-size: 1.5rem;
    color: var(--color-primary-blue);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.benefit-item p {
    font-size: 1rem;
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    min-height: 120px;
    flex-grow: 0;
}

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* Ratio 16:9 */
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: var(--transition);
}

.video-container:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 12px;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-light-gray);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-top: var(--spacing-lg);
}

.contact-image-img {
    width: 100%;
    max-width: 500px;
    height: auto;
    max-height: 500px;
    object-fit: contain;
    object-position: top;
    border-radius: 16px;
    display: block;
    margin: 0 auto;
}

.contact-image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--color-secondary-blue), var(--color-primary-blue));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 600;
    font-size: 1.2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group {
    width: 100%;
}

.form-input {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 2px solid var(--color-medium-gray);
    border-radius: 50px;
    font-size: 1rem;
    font-family: var(--font-family);
    color: var(--color-dark-gray);
    transition: var(--transition);
    background-color: var(--color-white);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-input::placeholder {
    color: var(--color-medium-gray);
}

/* Estilos específicos para select */
.form-input select,
select.form-input {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1.5rem center;
    background-size: 1.2em;
    padding-right: 3rem;
    cursor: pointer;
    color: var(--color-dark-gray);
}

.form-input select option:first-child,
select.form-input option:first-child {
    color: var(--color-medium-gray);
}

.form-input select:invalid,
select.form-input:invalid {
    color: var(--color-medium-gray);
}

.contact-form .btn-primary {
    width: 100%;
    cursor: pointer;
    border: 2px solid var(--color-medium-gray);
    background-color: transparent;
}

.contact-form .btn-primary:hover {
    background-color: var(--color-primary-blue);
    border-color: var(--color-primary-blue);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
    padding: var(--spacing-md) 0;
    text-align: center;
}

.footer p {
    margin: 0;
    font-size: 0.9rem;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .hero-text {
        max-width: 100%;
    }
    
    .hero-logo-img {
        max-height: 150px;
    }
    
    .product-name {
        font-size: 4rem;
    }
    
    .hero-headline {
        font-size: 2rem;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .benefit-item h3 {
        min-height: auto;
    }
    
    .benefit-item p {
        min-height: auto;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header .container {
        grid-template-columns: 1fr auto;
    }
    
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-md) 0;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        grid-column: 1 / -1;
        gap: 0;
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav-link {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1.1rem;
        font-weight: 600;
        text-align: left;
        width: 100%;
        border-radius: 0;
        border-bottom: 1px solid var(--color-light-gray);
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .nav-link:hover {
        background-color: var(--color-light-blue);
        color: var(--color-primary-blue);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-logo-img {
        max-height: 120px;
    }
    
    .product-image {
        max-width: 300px;
    }
    
    .product-image-placeholder {
        max-width: 350px;
        height: 350px;
    }
    
    .product-name {
        font-size: 3rem;
    }
    
    .hero-headline {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-card-carousel {
        width: 400px;
        min-height: 280px;
    }
    
    .features-arrow {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-image {
        height: 300px;
    }
    
    .gallery-placeholder {
        height: 300px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-logo-img {
        max-height: 100px;
    }
    
    .product-image {
        max-width: 250px;
    }
    
    .product-image-placeholder {
        max-width: 280px;
        height: 280px;
        font-size: 1rem;
    }
    
    .product-name {
        font-size: 2.5rem;
    }
    
    .hero-headline {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .btn-primary {
        padding: 0.875rem 2rem;
        font-size: 0.9rem;
    }
    
    .feature-card-carousel {
        width: 280px;
        min-height: 250px;
        padding: var(--spacing-md);
    }
    
    .feature-card-carousel h3 {
        font-size: 1.2rem;
    }
    
    .feature-description {
        font-size: 0.9rem;
    }
    
    .download-link {
        font-size: 0.9rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .features-arrow {
        width: 35px;
        height: 35px;
        font-size: 1.2rem;
    }
    
    .features-carousel-container {
        gap: var(--spacing-xs);
    }
    
    .gallery-image {
        height: 250px;
    }
    
    .gallery-placeholder {
        height: 250px;
        font-size: 1rem;
    }
}

/* ============================================
   ANIMACIONES
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-text {
    animation: fadeInUp 0.8s ease-out;
}

/* ============================================
   UTILIDADES
   ============================================ */

.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }