: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: linear-gradient(135deg, var(--azul-extra-claro) 0%, var(--blanco) 100%);
}

.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;
}

.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);
}

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

/* Product Hero Section */
.product-hero {
    max-width: 1200px;
    margin: 50px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

/* Gallery Styles */
.product-gallery {
    position: sticky;
    top: 100px;
}

.main-image {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--sombra-media);
    margin-bottom: 20px;
    cursor: zoom-in;
    position: relative;
}

.main-image.zoomed {
    cursor: zoom-out;
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.main-image.zoomed img {
    transform: scale(2.5);
}

.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;
    transition: var(--transicion);
    opacity: 0.6;
    border: 2px solid transparent;
}

.thumbnail:hover,
.thumbnail.active {
    opacity: 1;
    transform: translateY(-5px);
    border-color: var(--azul);
}

.product-info {
    padding: 20px;
}

h1 {
    font-size: 3rem;
    color: var(--azul);
    margin-bottom: 20px;
}

.product-rating {
    color: #FFD700;
    font-size: 1.2rem;
    margin-bottom: 20px;
}

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

.product-description {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--gris-oscuro);
    margin-bottom: 30px;
    padding: 20px;
    background: var(--blanco);
    border-radius: 15px;
    box-shadow: var(--sombra-suave);
}

.product-features {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.feature {
    flex: 1;
    padding: 20px;
    background: var(--blanco);
    border-radius: 15px;
    text-align: center;
    transition: var(--transicion);
    box-shadow: var(--sombra-suave);
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--sombra-media);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 10px;
    display: block;
}

/* Subscription Options */
.subscription-options {
    margin-bottom: 40px;
}

.subscription-options h3 {
    font-size: 1.8rem;
    color: var(--azul);
    margin-bottom: 20px;
}

.option-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.option-card {
    background: var(--blanco);
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--sombra-suave);
    transition: var(--transicion);
}

.option-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--sombra-media);
}

.option-card h4 {
    font-size: 1.4rem;
    color: var(--azul);
    margin-bottom: 15px;
}

.price {
    font-size: 2rem;
    font-weight: bold;
    color: var(--negro);
    margin-bottom: 20px;
}

.option-card ul {
    list-style: none;
    margin-bottom: 20px;
}

.option-card li {
    margin-bottom: 10px;
    color: var(--gris-oscuro);
}

.select-plan-btn {
    width: 100%;
    padding: 15px;
    background: var(--azul);
    color: var(--blanco);
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transicion);
}

.select-plan-btn:hover {
    background: var(--azul-hover);
    transform: translateY(-2px);
}

/* Custom Design Section */
.custom-design {
    background: linear-gradient(135deg, var(--azul) 0%, var(--azul-oscuro) 100%);
    padding: 30px;
    border-radius: 20px;
    color: var(--blanco);
    text-align: center;
}

.custom-design h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.custom-design p {
    margin-bottom: 20px;
    opacity: 0.9;
}

.custom-design-btn {
    background: var(--blanco);
    color: var(--azul);
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transicion);
}

.custom-design-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Restaurant Showcase */
.restaurant-showcase {
    max-width: 1200px;
    margin: 100px auto;
    padding: 0 20px;
}

.restaurant-showcase h2 {
    font-size: 2.5rem;
    color: var(--azul);
    text-align: center;
    margin-bottom: 40px;
}

.showcase-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.showcase-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 16/9;
}

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

.showcase-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--blanco);
    transform: translateY(100%);
    transition: var(--transicion);
}

.showcase-item:hover .showcase-overlay {
    transform: translateY(0);
}

.showcase-item:hover img {
    transform: scale(1.1);
}

.showcase-overlay h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

/* NFC Technology Section */
.nfc-section {
    max-width: 1200px;
    margin: 80px auto;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--azul-extra-claro) 0%, var(--blanco) 100%);
    border-radius: 30px;
    box-shadow: var(--sombra-media);
    overflow: hidden;
    position: relative;
}

.nfc-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(33, 155, 239, 0.1) 0%, transparent 60%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.nfc-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.nfc-info h2 {
    font-size: 2.5rem;
    color: var(--azul);
    margin-bottom: 30px;
}

.nfc-info p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--gris-oscuro);
    margin-bottom: 20px;
}

.nfc-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.nfc-feature {
    background: var(--blanco);
    padding: 20px;
    border-radius: 15px;
    box-shadow: var(--sombra-suave);
    transition: var(--transicion);
}

.nfc-feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--sombra-media);
}

.nfc-feature-icon {
    font-size: 2rem;
    color: var(--azul);
    margin-bottom: 10px;
}

.nfc-feature h3 {
    font-size: 1.2rem;
    color: var(--azul);
    margin-bottom: 10px;
}

.nfc-feature p {
    font-size: 0.9rem;
    color: var(--gris-oscuro);
    line-height: 1.6;
}

.nfc-visual {
    position: relative;
    padding: 20px;
}

.nfc-visual img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--sombra-media);
}

.nfc-waves {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 2px solid var(--azul-claro);
    opacity: 0;
    animation: nfcWaves 2s infinite;
}

.nfc-waves:nth-child(2) {
    animation-delay: 0.5s;
}

.nfc-waves:nth-child(3) {
    animation-delay: 1s;
}

@keyframes nfcWaves {
    0% {
        width: 50px;
        height: 50px;
        opacity: 0.8;
    }
    100% {
        width: 200px;
        height: 200px;
        opacity: 0;
    }
}

/* Footer Styles */
.footer {
    background: var(--negro);
    color: var(--blanco);
    padding: 60px 20px 30px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-section h3 {
    margin-bottom: 20px;
    color: var(--azul-claro);
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: var(--blanco);
    text-decoration: none;
    transition: var(--transicion);
}

.footer-section a:hover {
    color: var(--azul-claro);
}

.footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .product-hero {
        grid-template-columns: 1fr;
    }

    .product-gallery {
        position: relative;
        top: 0;
    }
}

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

    .option-cards {
        grid-template-columns: 1fr;
    }

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

    .product-features {
        flex-direction: column;
    }

    .nfc-content {
        grid-template-columns: 1fr;
    }

    .nfc-features {
        grid-template-columns: 1fr;
    }

    .nfc-info h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    .price {
        font-size: 1.6rem;
    }

    .custom-design {
        padding: 20px;
    }
}