:root {
    --azul: #219BEF;
    --azul-oscuro: #176BAA;
    --azul-claro: #61B7F1;
    --azul-hover: #1a7cc0;
    --azul-extra-claro: #EBF6FF;
    --negro: #000000;
    --gris-claro: #f5f5f5;
    --gris-oscuro: #333333;
    --blanco: #ffffff;
    --sombra-suave: 0 2px 10px rgba(0, 0, 0, 0.1);
    --sombra-media: 0 4px 12px rgba(0, 0, 0, 0.15);
    --transicion: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

body {
    background-color: var(--blanco);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    background-color: var(--blanco);
    box-shadow: var(--sombra-suave);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: var(--transicion);
}

.nav-container.scrolled {
    padding: 15px 50px;
    background-color: rgba(255, 255, 255, 0.95);
}

.logo {
    height: 40px;
    transition: var(--transicion);
}

.logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--negro);
    font-weight: 500;
    transition: var(--transicion);
    position: relative;
    padding: 5px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--azul);
    transition: var(--transicion);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links a:hover {
    color: var(--azul);
}

.nav-links a:active {
    color: var(--azul-oscuro);
}

/* Product Container */
.product-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    max-width: 1200px;
    margin: 50px auto;
    padding: 0 20px;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Gallery Styles */
.product-gallery {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.main-image {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 15px;
    overflow: hidden;
    border: 3px solid var(--azul-claro);
    position: relative;
    transition: var(--transicion);
    cursor: zoom-in;
}

.main-image:hover {
    transform: scale(1.02);
    box-shadow: var(--sombra-media);
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transicion);
}

.main-image:hover img {
    transform: scale(1.1);
}

.thumbnail-container {
    display: flex;
    gap: 15px;
    overflow-x: auto;
    padding: 10px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--azul) var(--gris-claro);
}

.thumbnail-container::-webkit-scrollbar {
    height: 6px;
}

.thumbnail-container::-webkit-scrollbar-track {
    background: var(--gris-claro);
    border-radius: 10px;
}

.thumbnail-container::-webkit-scrollbar-thumb {
    background: var(--azul);
    border-radius: 10px;
}

.thumbnail {
    width: 80px;
    height: 80px;
    border-radius: 10px;
    cursor: pointer;
    object-fit: cover;
    opacity: 0.6;
    transition: var(--transicion);
    border: 2px solid transparent;
}

.thumbnail:hover {
    opacity: 0.8;
    transform: translateY(-2px);
}

.thumbnail.active {
    opacity: 1;
    border: 2px solid var(--azul);
    transform: translateY(-4px);
}

/* Product Info Styles */
.product-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

h1 {
    font-size: 2.5rem;
    color: var(--azul);
}

.product-rating {
    color: #ffed22;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

.product-rating span {
    color: var(--gris-oscuro);
    font-size: 0.9rem;
    margin-left: 10px;
}

.product-price {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 15px;
    background: var(--azul-extra-claro);
    border-radius: 10px;
}

.current-price {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--negro);
    display: flex;
    align-items: center;
    gap: 10px;
}

.installments {
    color: var(--azul);
    font-size: 0.95rem;
    font-weight: 500;
}

.product-description {
    line-height: 1.8;
    color: var(--gris-oscuro);
    font-size: 1.1rem;
    padding: 20px;
    background-color: var(--gris-claro);
    border-radius: 10px;
    border-left: 4px solid var(--azul);
}

/* Variant Buttons */
.product-variants {
    margin-top: 25px;
}

.variant-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 15px;
}

.variant-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 25px;
    border: 2px solid var(--gris-claro);
    background: var(--blanco);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transicion);
    width: 100%;
    position: relative;
    overflow: hidden;
}

.variant-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--azul-extra-claro);
    opacity: 0;
    transition: var(--transicion);
}

.variant-btn:hover::before {
    opacity: 1;
}

.variant-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--sombra-media);
    border-color: var(--azul-claro);
}

.variant-btn.active {
    border-color: var(--azul);
    background-color: var(--blanco);
    transform: translateY(-4px);
    box-shadow: var(--sombra-media);
}

.variant-title {
    font-weight: 600;
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--azul);
    position: relative;
    z-index: 1;
}

.variant-description {
    color: var(--gris-oscuro);
    font-size: 1rem;
    white-space: pre-line;
    position: relative;
    z-index: 1;
    line-height: 1.6;
}

.variant-price {
    margin-top: 15px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--azul);
    position: relative;
    z-index: 1;
}

.add-to-cart {
    display: flex;
    gap: 20px;
    margin-top: 35px;
}

.quantity-selector {
    display: flex;
    align-items: center;
    border: 2px solid var(--azul-claro);
    border-radius: 12px;
    overflow: hidden;
    background: var(--blanco);
}

.quantity-btn {
    padding: 12px 18px;
    border: none;
    background: var(--blanco);
    cursor: pointer;
    transition: var(--transicion);
    color: var(--azul);
    font-size: 1.2rem;
    font-weight: 600;
}

.quantity-btn:hover {
    background-color: var(--azul-claro);
    color: var(--blanco);
}

.quantity-input {
    width: 60px;
    text-align: center;
    border: none;
    border-left: 2px solid var(--azul-claro);
    border-right: 2px solid var(--azul-claro);
    padding: 12px;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--negro);
}

.buy-button {
    flex-grow: 1;
    padding: 15px 30px;
    background: linear-gradient(45deg, var(--azul-oscuro) 0%, var(--azul) 100%);
    color: var(--blanco);
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transicion);
    position: relative;
    overflow: hidden;
}

.buy-button::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: var(--transicion);
}

.buy-button:hover::before {
    left: 100%;
}

.buy-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--sombra-media);
}

/* Product Features */
.product-features {
    display: flex;
    gap: 30px;
    margin-top: 35px;
    padding: 25px 0;
    border-top: 2px solid var(--gris-claro);
}

.feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background-color: var(--gris-claro);
    border-radius: 10px;
    transition: var(--transicion);
}

.feature:hover {
    transform: translateY(-2px);
    background-color: var(--blanco);
    box-shadow: var(--sombra-suave);
}

.feature span {
    font-size: 1rem;
    color: var(--azul);
    font-weight: 500;
}


.product-details {
    max-width: 1200px;
    margin: 60px auto;
    padding: 0 20px;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.detail-item {
    padding: 25px;
    background-color: var(--gris-claro);
    border-radius: 15px;
    transition: var(--transicion);
    border: 2px solid transparent;
}

.detail-item:hover {
    transform: translateY(-5px);
    border-color: var(--azul-claro);
    background-color: var(--blanco);
    box-shadow: var(--sombra-media);
}

.detail-item h3 {
    margin-bottom: 15px;
    font-size: 1.3rem;
    color: var(--azul);
}

.detail-item p {
    color: var(--gris-oscuro);
    line-height: 1.7;
    font-size: 1.05rem;
}

.video-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 60px 0;
}

.video-bux {
    max-width: 90%;
    border-radius: 15px;
    box-shadow: var(--sombra-media);
}


.footer {
    background: var(--negro);
    color: var(--blanco);
    padding: 60px 20px 30px;
    margin-top: 60px;
    position: relative;
    overflow: hidden;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 50px;
}

.footer-section h3 {
    margin-bottom: 25px;
    color: var(--azul-claro);
    font-size: 1.3rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--azul);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 15px;
}

.footer-section a {
    color: var(--blanco);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transicion);
    display: inline-block;
    padding: 5px 0;
}

.footer-section a:hover {
    opacity: 1;
    color: var(--azul-claro);
    transform: translateX(5px);
}

.footer-bottom {
    max-width: 1200px;
    margin: 50px auto 0;
    padding-top: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    opacity: 0.8;
    font-size: 0.9rem;
}


@media (max-width: 1024px) {
    .product-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .nav-container {
        padding: 15px 30px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 15px 20px;
    }

    .product-features {
        flex-direction: column;
        gap: 15px;
    }

    .add-to-cart {
        flex-direction: column;
    }

    .quantity-selector {
        width: 100%;
    }

    h1 {
        font-size: 2.2rem;
    }

    .product-description {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .nav-links {
        gap: 15px;
    }

    h1 {
        font-size: 2rem;
    }

    .current-price {
        font-size: 1.8rem;
    }

    .variant-btn {
        padding: 20px;
    }

    .footer-section h3 {
        font-size: 1.2rem;
    }
}