/* ===================================
   CSS Variables
   =================================== */
:root {
    --color-primary: #dc2626;
    --color-primary-dark: #b91c1c;
    --color-primary-light: #ef4444;
    --color-secondary: #f97316;
    --color-bg-dark: #0a0a0a;
    --color-bg-darker: #050505;
    --color-bg-card: #1a1a1a;
    --color-text: #e5e5e5;
    --color-text-muted: #a3a3a3;
    --color-border: #2a2a2a;
    --color-success: #10b981;
    --color-white: #ffffff;
    --font-primary: 'Poppins', sans-serif;
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-red: 0 0 20px rgba(220, 38, 38, 0.3);
}

/* ===================================
   Global Styles & Reset
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-dark);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

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

input,
textarea,
select {
    font-family: inherit;
    border: none;
    outline: none;
}

/* ===================================
   Utility Classes
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.highlight {
    color: var(--color-primary);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}
.trainer-photo {
    width: 300px;
    max-width: 50%;
    aspect-ratio: 1/1;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--color-primary);
    margin: auto;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    box-shadow: var(--shadow-red);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(220, 38, 38, 0.5);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-border);
    color: var(--color-text);
}

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

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ===================================
   Navbar
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: transparent;
    padding: 20px 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 600;
}

.logo i {
    color: var(--color-primary);
    font-size: 1.8rem;
}

.logo strong {
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    gap: 35px;
}

.nav-link {
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

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

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--color-text);
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(220, 38, 38, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(220, 38, 38, 0.08) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="https://upload.wikimedia.org/wikipedia/commons/1/10/Halftoning_introduction.svg" width="100" height="100" viewBox="0 0 100 100"><rect width="1" height="1" fill="%23ffffff" opacity="0.03"/></svg>');
    background-size: 2px 2px;
}

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

.hero-title, .nombre-trainer {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
    text-transform: uppercase;
    animation: fadeInUp 1s ease;
}

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

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s both;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: var(--color-primary);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ===================================
   Stats Section
   =================================== */
.stats {
    padding: 80px 0;
    background: var(--color-bg-darker);
}

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

.stat-card {
    text-align: center;
    padding: 30px;
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-red);
}

.stat-card i {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: 15px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-white);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===================================
   Services Section
   =================================== */
.services {
    padding: 100px 0;
    background: var(--color-bg-dark);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.service-card {
    position: relative;
    padding: 40px 30px;
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.service-card.featured {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-bg-card) 0%, rgba(220, 38, 38, 0.05) 100%);
}

.featured-badge {
    position: absolute;
    top: -15px;
    right: 30px;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.service-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220, 38, 38, 0.1);
    border-radius: 50%;
    margin-bottom: 25px;
}

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

.service-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.service-description {
    color: var(--color-text-muted);
    margin-bottom: 20px;
    line-height: 1.8;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-muted);
}

.service-features i {
    color: var(--color-primary);
    font-size: 0.9rem;
}

/* ===================================
   Results/Testimonials Section
   =================================== */
.results {
    padding: 100px 0;
    background: var(--color-bg-darker);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.testimonial-card {
    padding: 30px;
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-red);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 3px solid var(--color-primary);
}

.testimonial-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.testimonial-rating {
    display: flex;
    gap: 3px;
}

.testimonial-rating i {
    color: #fbbf24;
    font-size: 0.9rem;
}

.testimonial-text {
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-stats {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.stat-badge {
    padding: 5px 12px;
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid var(--color-primary);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* ===================================
   Pricing Section
   =================================== */
.pricing {
    padding: 100px 0;
    background: var(--color-bg-dark);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    align-items: start;
}

.pricing-card {
    position: relative;
    padding: 40px 30px;
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-bg-card) 0%, rgba(220, 38, 38, 0.05) 100%);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.08) translateY(-10px);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-white);
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.pricing-header {
    text-align: center;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 30px;
}

.plan-name {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.plan-price {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 5px;
}

.currency {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-top: 10px;
}

.amount {
    font-size: 4rem;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1;
}

.period {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    align-self: flex-end;
    margin-bottom: 10px;
}

.plan-features {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
    flex-grow: 1;
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text);
}

.plan-features li.disabled {
    color: var(--color-text-muted);
    opacity: 0.5;
}

.plan-features i {
    font-size: 1rem;
}

.plan-features .fa-check {
    color: var(--color-primary);
}

.plan-features .fa-times {
    color: var(--color-text-muted);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: 100px 0;
    background: var(--color-bg-darker);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.contact-info > p {
    color: var(--color-text-muted);
    margin-bottom: 30px;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.contact-item i {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220, 38, 38, 0.1);
    border-radius: 50%;
    color: var(--color-primary);
    font-size: 1.3rem;
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 3px;
}

.contact-item p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

.contact-form {
    padding: 40px;
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    background: var(--color-bg-darker);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.radio-group {
    display: flex;
    gap: 24px;
    padding: 10px 0;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 400;
    color: var(--color-text);
}

.radio-label input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.error-message {
    display: none;
    color: var(--color-primary);
    font-size: 0.85rem;
    margin-top: 5px;
}

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

.form-group.error .error-message {
    display: block;
}

.form-success {
    display: none;
    padding: 15px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--color-success);
    border-radius: 8px;
    color: var(--color-success);
    text-align: center;
    margin-top: 20px;
}

.form-success.show {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: 60px 0 30px;
    background: var(--color-bg-darker);
    border-top: 1px solid var(--color-border);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.footer-logo i {
    color: var(--color-primary);
    font-size: 1.8rem;
}

.footer-logo strong {
    color: var(--color-primary);
}

.footer-description {
    color: var(--color-text-muted);
    line-height: 1.8;
}

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: var(--color-text-muted);
    transition: var(--transition);
}

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

.newsletter-form {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 16px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
}

.newsletter-form button {
    padding: 12px 20px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 8px;
    transition: var(--transition);
}

.newsletter-form button:hover {
    background: var(--color-primary-dark);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    text-align: center;
}

.footer-dev {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-dev a {
    color: var(--color-primary);
    font-weight: 600;
    transition: var(--transition);
}

.footer-dev a:hover {
    opacity: 0.8;
}

.footer-bottom-links {
    display: flex;
    gap: 20px;
}

.footer-bottom-links a {
    color: var(--color-text-muted);
    transition: var(--transition);
}

.footer-bottom-links a:hover {
    color: var(--color-primary);
}

/* ===================================
   Back to Top Button
   =================================== */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 28px;
    width: 45px;
    height: 45px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-red);
}

.whatsapp-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    z-index: 1000; /* Para que siempre esté por encima de otros elementos */
}

.whatsapp-btn img {
    width: 100%;
    height: auto;
    border-radius: 50%;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.2);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 40px 30px;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }

    .nav-menu.active {
        right: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-content {
        padding-top: 80px;
    }

    .nombre-trainer {
        font-size: 2.5rem;
        margin-top: -10px;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

@media (max-width: 640px) {
    .hero {
        height: auto;
        min-height: 100vh;
        padding: 80px 0 60px;
    }

    .hero-content {
        padding-top: 0;
    }

    .scroll-indicator {
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .stats {
        padding: 50px 0;
    }

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

    .stat-number {
        font-size: 2.5rem;
    }

    .amount {
        font-size: 3rem;
    }

    .pricing-card.featured {
        transform: scale(1);
    }

    .pricing-card.featured:hover {
        transform: scale(1.02) translateY(-5px);
    }

    .contact-form {
        padding: 25px;
    }

    .back-to-top {
        bottom: 80px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

/* Instagram Section */
.instagram-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #833ab4, #fd1d1d, #fcb045);
    text-align: center;
}

.instagram-content {
    max-width: 600px;
    margin: 0 auto;
}

.instagram-icon {
    font-size: 4rem;
    color: #fff;
    margin-bottom: 20px;
}

.instagram-title {
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 10px;
}

.instagram-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
}

.instagram-section .btn {
    background: #fff;
    color: #833ab4;
    font-weight: 600;
}

.instagram-section .btn:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
}

@media (max-width: 768px) {
    .instagram-title {
        font-size: 2rem;
    }

    .instagram-icon {
        font-size: 3rem;
    }
}