/* ===== Variables y Reset ===== */
:root {
    --primary: #dc2626;
    --primary-dark: #991b1b;
    --primary-light: #ef4444;
    --secondary: #1e3a8a;
    --secondary-dark: #1e293b;
    --secondary-light: #3b82f6;
    --accent: #f59e0b;
    --success: #10b981;
    --whatsapp: #25d366;
    --dark: #0f172a;
    --gray-900: #1e293b;
    --gray-800: #334155;
    --gray-700: #475569;
    --gray-600: #64748b;
    --gray-500: #94a3b8;
    --gray-400: #cbd5e1;
    --gray-300: #e2e8f0;
    --gray-200: #f1f5f9;
    --gray-100: #f8fafc;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img {
    max-width: 100%;
    display: block;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    font-family: inherit;
}

input, select, textarea {
    font-family: inherit;
    font-size: 1rem;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===== Botones ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* ===== Header / Navegación ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.99);
    box-shadow: var(--shadow-lg);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    width: auto;
    height: 110px;
    object-fit: contain;
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-name {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--dark);
}

.logo-slogan {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 600;
    font-style: italic;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--gray-700);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    font-size: 1.5rem;
    color: var(--dark);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(220, 38, 38, 0.75) 100%),
                url('https://images.unsplash.com/photo-1486496572940-2bb2341fdbdf?w=1920&q=80') center/cover;
    padding: 120px 0 60px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(220, 38, 38, 0.3) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hero-title-main {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    color: var(--white);
    text-shadow: 0 4px 20px rgba(0,0,0,0.5);
    letter-spacing: -1px;
}

.hero-title-sub {
    font-size: clamp(1.2rem, 3vw, 1.75rem);
    font-weight: 400;
    color: var(--accent);
    font-style: italic;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.2rem);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.9;
    margin-top: 0.25rem;
}

.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
    z-index: 3;
}

@keyframes bounce {
    0%, 100% { transform: translate(-50%, 0); }
    50% { transform: translate(-50%, 10px); }
}

/* ===== Secciones ===== */
.section {
    padding: 6rem 0;
}

.section:nth-child(even) {
    background-color: var(--gray-100);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: 1rem;
    color: var(--dark);
}

.section-title.light {
    color: var(--accent);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.6);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Sobre Nosotros ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content > h3 {
    font-size: 1.75rem;
    margin-bottom: 1.25rem;
    color: var(--dark);
}

.about-content > p {
    margin-bottom: 1rem;
    color: var(--gray-700);
    font-size: 1.05rem;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.feature {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.feature i {
    color: var(--primary);
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.feature h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--dark);
}

.feature p {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    aspect-ratio: 4/5;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    box-shadow: var(--shadow-xl);
}

.image-frame {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-frame i {
    font-size: 8rem;
    color: var(--white);
    opacity: 0.3;
}

.experience-badge {
    position: absolute;
    bottom: 2rem;
    right: -1.5rem;
    background-color: var(--accent);
    color: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    text-align: center;
    display: flex;
    flex-direction: column;
}

.badge-number {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.badge-text {
    font-size: 0.85rem;
    font-weight: 600;
}

/* ===== Productos ===== */
.products-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 3rem;
}

.tab-btn {
    padding: 0.625rem 1.25rem;
    background-color: var(--white);
    color: var(--gray-700);
    border: 2px solid var(--gray-300);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

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

.tab-btn.active {
    background-color: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

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

.product-image {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--gray-200), var(--gray-100));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image i {
    font-size: 4rem;
    color: var(--primary);
    opacity: 0.7;
    transition: var(--transition);
}

.product-card:hover .product-image i {
    transform: scale(1.1);
    opacity: 1;
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: var(--primary);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.product-info {
    padding: 1.5rem;
}

.product-category {
    font-size: 0.75rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.product-title {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.product-description {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

.product-price {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.product-btn {
    background-color: var(--gray-100);
    color: var(--dark);
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.product-btn:hover {
    background-color: var(--whatsapp);
    color: var(--white);
}

.products-cta {
    text-align: center;
    margin-top: 3rem;
    padding: 2.5rem;
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.products-cta p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--gray-700);
}

/* ===== Servicios ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--white);
    padding: 2.5rem 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

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

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.service-icon i {
    font-size: 2rem;
    color: var(--white);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--dark);
}

.service-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* ===== Marcas ===== */
.brands {
    background-color: var(--dark);
    color: var(--white);
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.brand-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background-color: rgba(255,255,255,0.05);
    border-radius: var(--radius);
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.1);
}

.brand-item:hover {
    background-color: rgba(255,255,255,0.1);
    transform: translateY(-3px);
}

.brand-item i {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.brand-item span {
    font-weight: 600;
    color: var(--white);
}

/* ===== Ubicación ===== */
.location-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.location-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.location-card {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.location-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.location-icon {
    width: 50px;
    height: 50px;
    background-color: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.location-icon i {
    font-size: 1.25rem;
    color: var(--primary);
}

.location-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.location-card p {
    font-size: 0.9rem;
    color: var(--gray-700);
    line-height: 1.5;
}

.location-card a {
    color: var(--primary);
    font-weight: 500;
}

.location-card a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.location-detail {
    font-style: italic;
    color: var(--gray-600) !important;
    font-size: 0.85rem !important;
    margin-top: 0.25rem;
}

.location-map {
    background: linear-gradient(135deg, var(--gray-200), var(--gray-100));
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--gray-300);
}

.map-placeholder i {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.map-placeholder h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.map-placeholder p {
    color: var(--gray-700);
    margin-bottom: 1.5rem;
}

/* ===== Contacto ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: start;
}

.contact-info > h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.contact-info > p {
    color: var(--gray-700);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background-color: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.contact-method:hover {
    border-color: var(--primary);
    transform: translateX(5px);
}

.contact-method i {
    font-size: 1.5rem;
    color: var(--primary);
    width: 40px;
    height: 40px;
    background-color: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-method div {
    display: flex;
    flex-direction: column;
}

.contact-method strong {
    color: var(--dark);
    font-size: 0.95rem;
}

.contact-method span {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-links a {
    width: 45px;
    height: 45px;
    background-color: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
}

/* ===== Formulario ===== */
.contact-form {
    background-color: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    background-color: var(--white);
    color: var(--gray-800);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: var(--primary);
}

.form-error {
    color: var(--primary);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: none;
}

.form-group input.error + .form-error,
.form-group select.error + .form-error,
.form-group textarea.error + .form-error {
    display: block;
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--radius);
    text-align: center;
    font-weight: 600;
    display: none;
}

.form-status.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
    display: block;
    border: 1px solid var(--success);
}

.form-status.error {
    background-color: rgba(220, 38, 38, 0.1);
    color: var(--primary);
    display: block;
    border: 1px solid var(--primary);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--dark);
    color: var(--gray-400);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-logo i {
    font-size: 2.5rem;
    color: var(--primary);
}

.footer-logo strong {
    display: block;
    font-size: 1.25rem;
    font-family: 'Montserrat', sans-serif;
}

.footer-logo span {
    font-size: 0.85rem;
    color: var(--accent);
    font-style: italic;
}

.footer-col > p {
    line-height: 1.6;
    font-size: 0.95rem;
}

.footer-col h4 {
    color: var(--white);
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--primary);
}

.footer-col ul li {
    margin-bottom: 0.625rem;
}

.footer-col ul li a {
    color: var(--gray-400);
    font-size: 0.95rem;
    transition: var(--transition);
}

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

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.footer-contact i {
    color: var(--primary);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    font-size: 0.85rem;
}

/* ===== Botones Flotantes ===== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--whatsapp);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    box-shadow: var(--shadow-xl);
    z-index: 999;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    background-color: #1eb854;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--secondary);
    color: var(--white);
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: var(--transition);
}

.back-to-top.visible {
    display: flex;
}

.back-to-top:hover {
    background-color: var(--secondary-dark);
    transform: translateY(-3px);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .about-grid,
    .contact-grid,
    .location-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .location-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

    .nav.active {
        max-height: 500px;
        padding: 1rem 0;
    }

    .nav-link {
        padding: 1rem 1.5rem;
        width: 100%;
        border-bottom: 1px solid var(--gray-200);
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 1.5rem;
    }

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

    .footer-logo {
        justify-content: center;
    }

    .footer-contact li {
        justify-content: center;
    }

    .footer-bottom {
        justify-content: center;
        text-align: center;
    }

    .products-tabs {
        gap: 0.25rem;
    }

    .tab-btn {
        font-size: 0.8rem;
        padding: 0.5rem 0.75rem;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .whatsapp-float {
        width: 55px;
        height: 55px;
        font-size: 1.5rem;
    }
}

/* ===== Animaciones ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}