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

:root {
    --primary-color: #2ecc71;
    --secondary-color: #27ae60;
    --dark-color: #1e272e;
    --light-color: #f5f7fa;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --text-color: #2c3e50;
    --gray-color: #7f8c8d;
    --border-radius: 16px;
    --box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    --hover-shadow: 0 15px 40px rgba(46, 204, 113, 0.15);
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f8fafc;
    overflow-x: hidden;
}

/* Header & Navigation */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(46, 204, 113, 0.1);
}

.navbar {
    padding: 0.8rem 0;
}

.nav-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--primary-color);
}

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

.menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--dark-color);
    cursor: pointer;
    transition: var(--transition);
}

.menu-btn:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 10rem 2rem 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,170.7C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-repeat: no-repeat;
    background-position: bottom;
    background-size: cover;
    opacity: 0.2;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    display: inline-block;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255,255,255,0.3);
}

.hero h1 {
    font-size: 3.2rem;
    margin-bottom: 1.2rem;
    font-weight: 800;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.95;
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.3rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Info Section */
.info-section {
    padding: 4rem 2rem;
    background: white;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.info-card {
    text-align: center;
    padding: 2rem;
    background: var(--light-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
}

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

.info-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.info-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.info-card p {
    color: var(--gray-color);
    font-size: 0.95rem;
}

/* Sections */
.section {
    padding: 5rem 2rem;
}

.bg-light {
    background: white;
}

.container {
    max-width: 1300px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.3rem;
    color: var(--dark-color);
    margin-bottom: 0.8rem;
    text-align: center;
    font-weight: 800;
    background: linear-gradient(135deg, var(--dark-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-color);
    margin-bottom: 3rem;
    font-size: 1.1rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

/* Product Card */
.product-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
    border: 1px solid rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--hover-shadow);
    border-color: var(--primary-color);
}

.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    z-index: 1;
    box-shadow: 0 4px 10px rgba(46, 204, 113, 0.3);
}

.product-image-container {
    height: 220px;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid #eee;
}

.product-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: var(--transition);
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-info {
    padding: 1.8rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    color: var(--dark-color);
    min-height: 60px;
    line-height: 1.4;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.product-price small {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--gray-color);
}

.product-rating {
    color: var(--warning-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    flex-wrap: wrap;
}

.product-rating span {
    color: var(--gray-color);
    font-size: 0.9rem;
    margin-left: 0.3rem;
}

.product-description {
    color: var(--gray-color);
    font-size: 0.9rem;
    margin-bottom: 1.2rem;
    line-height: 1.5;
    flex: 1;
}

.product-features {
    list-style: none;
    margin-bottom: 1.2rem;
    font-size: 0.85rem;
}

.product-features li {
    margin-bottom: 0.3rem;
    color: var(--text-color);
}

.product-features i {
    color: var(--primary-color);
    margin-right: 0.5rem;
    font-size: 0.8rem;
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    letter-spacing: 0.5px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(46, 204, 113, 0.4);
}

.btn i {
    margin-left: 0.5rem;
    transition: var(--transition);
}

.btn:hover i {
    transform: translateX(5px);
}

.btn-small {
    padding: 0.7rem 1.2rem;
    font-size: 0.9rem;
}

/* Guide Section */
.guide-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.guide-item {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(0,0,0,0.05);
}

.guide-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1.2rem;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.guide-item h3 i {
    color: var(--primary-color);
}

.guide-item ul {
    list-style: none;
}

.guide-item ul li {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-color);
}

.guide-item ul li::before {
    content: '✓';
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-weight: 600;
}

.calculator {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-top: 1rem;
}

.calculator input {
    padding: 0.8rem;
    border: 2px solid #e0e7ff;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
}

.calculator input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.calculo-resultado {
    font-weight: 600;
    color: var(--primary-color);
    margin-top: 0.5rem;
    font-size: 1.1rem;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), white);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-info p {
    opacity: 0.8;
    font-size: 0.95rem;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-disclaimer {
    grid-column: 1 / -1;
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.85rem;
    opacity: 0.6;
}

/* Loading Animation */
.loading {
    text-align: center;
    padding: 3rem;
}

.loading-spinner {
    border: 4px solid #e0e7ff;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 1.5rem;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        gap: 1rem;
    }

    .nav-menu.active {
        display: flex;
    }

    .menu-btn {
        display: block;
    }

    .hero {
        padding: 8rem 1rem 4rem;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .section {
        padding: 3rem 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

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

    .product-name {
        min-height: auto;
    }

    .guide-container {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tooltip */
[data-tooltip] {
    position: relative;
    cursor: pointer;
}

[data-tooltip]:before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1rem;
    background: var(--dark-color);
    color: white;
    border-radius: 8px;
    font-size: 0.8rem;
    white-space: nowrap;
    display: none;
    z-index: 10;
    margin-bottom: 10px;
}

[data-tooltip]:hover:before {
    display: block;
}

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

.product-card {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.product-card:nth-child(1) { animation-delay: 0.1s; }
.product-card:nth-child(2) { animation-delay: 0.2s; }
.product-card:nth-child(3) { animation-delay: 0.3s; }
.product-card:nth-child(4) { animation-delay: 0.4s; }
.product-card:nth-child(5) { animation-delay: 0.5s; }
.product-card:nth-child(6) { animation-delay: 0.6s; }
.product-card:nth-child(7) { animation-delay: 0.7s; }
.product-card:nth-child(8) { animation-delay: 0.8s; }
.product-card:nth-child(9) { animation-delay: 0.9s; }
.product-card:nth-child(10) { animation-delay: 1s; }

/* Agregar al final del archivo CSS */

.product-presentation {
    font-size: 0.85rem;
    color: #7f8c8d;
    margin-bottom: 0.5rem;
    background: #f8f9fa;
    padding: 0.2rem 0.5rem;
    border-radius: 20px;
    display: inline-block;
}

.price-main {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.price-per-gram {
    font-size: 0.85rem;
    color: #7f8c8d;
    margin-left: 0.5rem;
    font-weight: normal;
}

.price-range {
    font-size: 0.85rem;
    color: #27ae60;
    margin-bottom: 0.3rem;
}