/* ==========================================
   RESET Y CONFIGURACIÓN BÁSICA
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colores principales */
    --color-primary: #ff0000;
    --color-secondary: #000000;
    --color-white: #ffffff;
    --color-yellow: #ffeb00;
    --color-green-neon: #39ff14;
    --color-dark-gray: #1a1a1a;
    --color-light-gray: #f5f5f5;
    
    /* Gradientes */
    --gradient-red: linear-gradient(135deg, #ff0000 0%, #cc0000 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #000000 100%);
    --gradient-overlay: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.5));
    
    /* Tipografía */
    --font-display: 'Bebas Neue', cursive;
    --font-body: 'Montserrat', sans-serif;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Sombras */
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.2);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.3);
    --shadow-red: 0 0 20px rgba(255,0,0,0.5);
    
    /* Transiciones */
    --transition-fast: 0.3s ease;
    --transition-normal: 0.5s ease;
    --transition-slow: 0.8s ease;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Scroll suave */
html {
    scroll-behavior: smooth;
}

/* Scrollbar personalizado */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #cc0000;
}

/* ==========================================
   NAVEGACIÓN
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 1);
    box-shadow: 0 4px 20px rgba(255, 0, 0, 0.3);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-white);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: 2px;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--color-white);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 1px;
    position: relative;
    transition: var(--transition-fast);
    padding: 0.5rem 0;
}

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

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

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

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

.hamburger span {
    width: 30px;
    height: 3px;
    background: var(--color-white);
    transition: var(--transition-fast);
}

.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, -7px);
}

/* ==========================================
   HERO / INICIO
   ========================================== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('https://images.unsplash.com/photo-1534438327276-14e5300c3a48?w=1920&h=1080&fit=crop') no-repeat center center/cover;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,0,0,0.3) 0%, rgba(0,0,0,0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 2rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 5rem;
    color: var(--color-white);
    letter-spacing: 5px;
    margin-bottom: 1rem;
    text-shadow: 0 0 30px rgba(255,0,0,0.8), 0 4px 20px rgba(0,0,0,0.8);
    animation: slideDown 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-primary);
    font-weight: 700;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    animation: slideUp 1s ease 0.2s backwards;
}

.hero-text {
    font-size: 1.1rem;
    color: var(--color-light-gray);
    margin-bottom: 2rem;
    animation: fadeIn 1s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeIn 1s ease 0.6s backwards;
}

.btn {
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 50px;
    font-family: var(--font-display);
    font-size: 1.2rem;
    letter-spacing: 2px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(255,0,0,0.8);
}

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

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-secondary);
    transform: translateY(-3px);
}

/* Hero Stats */
.hero-stats {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 4rem;
    z-index: 2;
    animation: fadeIn 1s ease 0.8s backwards;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-primary);
    font-weight: bold;
    text-shadow: var(--shadow-red);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ==========================================
   SECCIÓN PLANES
   ========================================== */
.planes {
    padding: var(--spacing-xl) 0;
    background: var(--gradient-dark);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    color: var(--color-white);
    letter-spacing: 3px;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--color-primary);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-light-gray);
    margin-top: 1.5rem;
}

.planes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.plan-card {
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--gradient-red);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

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

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

.plan-card.featured {
    border-color: var(--color-primary);
    background: rgba(255,0,0,0.1);
    transform: scale(1.05);
}

.plan-badge {
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--gradient-red);
    color: var(--color-white);
    padding: 0.5rem 2.5rem;
    font-size: 0.8rem;
    font-weight: bold;
    letter-spacing: 1px;
    transform: rotate(45deg);
}

.plan-header i {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.plan-header h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.plan-price {
    margin: 2rem 0;
    font-family: var(--font-display);
}

.currency {
    font-size: 2rem;
    color: var(--color-primary);
}

.amount {
    font-size: 4rem;
    color: var(--color-white);
}

.period {
    font-size: 1.2rem;
    color: var(--color-light-gray);
}

.plan-features {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.plan-features li {
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.plan-features i {
    font-size: 1.2rem;
}

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

.plan-features .fa-times {
    color: #666;
}

.btn-plan {
    margin-top: 2rem;
    width: 100%;
    background: var(--gradient-red);
    color: var(--color-white);
}

/* ==========================================
   SECCIÓN RUTINAS
   ========================================== */
.rutinas {
    padding: var(--spacing-xl) 0;
    background: url('https://images.unsplash.com/photo-1571902943202-507ec2618e8f?w=1920&h=1080&fit=crop') no-repeat center center/cover;
    position: relative;
}

.rutinas::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
}

.rutinas .container {
    position: relative;
    z-index: 1;
}

.rutinas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.rutina-card {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: var(--transition-normal);
}

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

.rutina-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-red);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    box-shadow: var(--shadow-red);
}

.rutina-card h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.rutina-card p {
    color: var(--color-light-gray);
    margin-bottom: 2rem;
}

.progress-bar {
    margin: 2rem 0;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
}

.progress-track {
    height: 10px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-red);
    border-radius: 10px;
    width: 0;
    transition: width 1.5s ease;
    box-shadow: var(--shadow-red);
}

.progress-fill.animated {
    animation: progressFill 1.5s ease forwards;
}

.rutina-details {
    list-style: none;
    margin-top: 2rem;
}

.rutina-details li {
    padding: 0.8rem;
    margin: 0.5rem 0;
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.rutina-details i {
    color: var(--color-primary);
    font-size: 1.2rem;
}

/* ==========================================
   SECCIÓN ENTRENADORES
   ========================================== */
.entrenadores {
    padding: var(--spacing-xl) 0;
    background: var(--color-dark-gray);
}

.entrenadores-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.entrenador-card {
    background: rgba(255,255,255,0.05);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition-normal);
}

.entrenador-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-red);
}

.entrenador-img {
    position: relative;
    overflow: hidden;
    height: 400px;
}

.entrenador-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

.entrenador-card:hover .entrenador-img img {
    transform: scale(1.1);
}

.entrenador-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,0,0,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.entrenador-card:hover .entrenador-overlay {
    opacity: 1;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    width: 50px;
    height: 50px;
    background: var(--color-white);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: var(--transition-fast);
}

.social-icons a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.2);
}

.entrenador-info {
    padding: 1.5rem;
    text-align: center;
}

.entrenador-info h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.specialty {
    display: block;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 1rem;
}

.experience {
    color: var(--color-light-gray);
    font-size: 0.9rem;
    margin: 0.5rem 0;
}

.experience i {
    color: var(--color-yellow);
    margin-right: 0.5rem;
}

.certification {
    font-size: 0.85rem;
    color: #999;
    font-style: italic;
}

/* ==========================================
   SECCIÓN GALERÍA
   ========================================== */
.galeria {
    padding: var(--spacing-xl) 0;
    background: var(--gradient-dark);
}

.galeria-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.galeria-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    height: 300px;
    cursor: pointer;
}

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

.galeria-item:hover img {
    transform: scale(1.15);
}

.galeria-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,0,0,0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.galeria-item:hover .galeria-overlay {
    opacity: 1;
}

.galeria-overlay i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.galeria-overlay p {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 2px;
}

/* ==========================================
   SECCIÓN TESTIMONIOS
   ========================================== */
.testimonios {
    padding: var(--spacing-xl) 0;
    background: url('https://images.unsplash.com/photo-1540497077202-7c8a3999166f?w=1920&h=1080&fit=crop') no-repeat center center/cover;
    position: relative;
}

.testimonios::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
}

.testimonios .container {
    position: relative;
    z-index: 1;
}

.testimonios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonio-card {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 2rem;
    transition: var(--transition-normal);
}

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

.testimonio-rating {
    margin-bottom: 1rem;
}

.testimonio-rating i {
    color: var(--color-yellow);
    font-size: 1.2rem;
    margin-right: 0.2rem;
}

.testimonio-text {
    font-style: italic;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: var(--color-light-gray);
}

.testimonio-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.author-info h4 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.author-info span {
    font-size: 0.9rem;
    color: var(--color-primary);
}

/* ==========================================
   SECCIÓN CONTACTO
   ========================================== */
.contacto {
    padding: var(--spacing-xl) 0;
    background: var(--color-dark-gray);
}

.contacto-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    margin-top: 3rem;
}

.contacto-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.info-item i {
    font-size: 2rem;
    color: var(--color-primary);
    min-width: 40px;
}

.info-item h4 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.info-item p {
    color: var(--color-light-gray);
    line-height: 1.8;
}

.contacto-form {
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 2.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-red);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #999;
}

.error-message {
    display: block;
    color: var(--color-primary);
    font-size: 0.85rem;
    margin-top: 0.5rem;
    opacity: 0;
    transition: var(--transition-fast);
}

.error-message.show {
    opacity: 1;
}

.btn-submit {
    width: 100%;
    background: var(--gradient-red);
    color: var(--color-white);
    padding: 1.2rem;
    font-size: 1.1rem;
}

.success-message {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(57,255,20,0.1);
    border: 2px solid var(--color-green-neon);
    border-radius: 10px;
    color: var(--color-green-neon);
    text-align: center;
    display: none;
}

.success-message.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

.success-message i {
    margin-right: 0.5rem;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: var(--color-secondary);
    padding: 3rem 0 1rem;
    border-top: 3px solid var(--color-primary);
}

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

.footer-section h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.footer-section h3 i {
    color: var(--color-primary);
    margin-right: 0.5rem;
}

.footer-section h4 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    letter-spacing: 1px;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.footer-section p {
    color: var(--color-light-gray);
    line-height: 1.8;
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: var(--color-light-gray);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.3rem;
    transition: var(--transition-fast);
}

.social-links a:hover {
    background: var(--color-primary);
    transform: scale(1.1);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-light-gray);
    font-size: 0.9rem;
}

/* ==========================================
   BOTÓN SCROLL TO TOP
   ========================================== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-red);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
    z-index: 999;
    box-shadow: var(--shadow-red);
}

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

.scroll-top:hover {
    transform: translateY(-5px);
}

/* ==========================================
   ANIMACIONES
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes progressFill {
    from {
        width: 0;
    }
    to {
        width: var(--progress-width);
    }
}

/* Clases de animación para usar con JavaScript */
.fade-in {
    animation: fadeIn 1s ease;
}

.fade-up {
    animation: slideUp 0.8s ease;
}

.fade-down {
    animation: slideDown 0.8s ease;
}

.slide-left {
    animation: slideLeft 0.8s ease;
}

.slide-right {
    animation: slideRight 0.8s ease;
}

.slide-up {
    animation: slideUp 0.8s ease;
}

.zoom-in {
    animation: zoomIn 0.8s ease;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

/* Tablets */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .contacto-wrapper {
        grid-template-columns: 1fr;
    }
}

/* Móviles */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(0,0,0,0.98);
        width: 100%;
        text-align: center;
        transition: var(--transition-fast);
        padding: 2rem 0;
        gap: 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        padding: 1rem 0;
    }
    
    .hero-title {
        font-size: 3rem;
        letter-spacing: 3px;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-text {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
        bottom: 30px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .planes-grid,
    .rutinas-grid,
    .entrenadores-grid,
    .galeria-grid,
    .testimonios-grid {
        grid-template-columns: 1fr;
    }
    
    .plan-card.featured {
        transform: scale(1);
    }
    
    .galeria-grid {
        grid-template-columns: 1fr;
    }
    
    .galeria-item {
        height: 250px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
        letter-spacing: 2px;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .logo i {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }
    
    .amount {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .rutina-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
    
    .entrenador-img {
        height: 300px;
    }
}

/* ==========================================
   SECCIÓN REGISTRO DE CLIENTE
   ========================================== */
.registro-cliente {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.registro-cliente::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 100%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255, 0, 0, 0.02) 10px,
        rgba(255, 0, 0, 0.02) 20px
    );
    animation: slidePattern 20s linear infinite;
}

@keyframes slidePattern {
    0% { transform: translateX(0); }
    100% { transform: translateX(50px); }
}

.registro-wrapper {
    display: grid;
    gap: 3rem;
    position: relative;
    z-index: 1;
}

/* Formulario de Registro */
.registro-form {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 0, 0, 0.2);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 10px 50px rgba(255, 0, 0, 0.2);
    transition: var(--transition-normal);
}

.registro-form:hover {
    border-color: rgba(255, 0, 0, 0.4);
    box-shadow: 0 15px 60px rgba(255, 0, 0, 0.3);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: var(--color-white);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group label i {
    color: var(--color-primary);
    margin-right: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 20px rgba(255, 0, 0, 0.3);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ff0000' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.form-group select option {
    background: var(--color-secondary);
    color: var(--color-white);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

/* Checkbox personalizado */
.checkbox-group {
    margin-top: 2rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    gap: 1rem;
}

.checkbox-label input[type="checkbox"] {
    width: 22px;
    height: 22px;
    min-width: 22px;
    cursor: pointer;
    accent-color: var(--color-primary);
    margin-top: 2px;
}

.checkbox-label span {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Botón de registro */
.btn-registro {
    width: 100%;
    padding: 1.2rem 2rem;
    background: var(--gradient-red);
    color: var(--color-white);
    border: none;
    border-radius: 10px;
    font-family: var(--font-display);
    font-size: 1.3rem;
    letter-spacing: 2px;
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: 0 5px 20px rgba(255, 0, 0, 0.4);
    margin-top: 1rem;
}

.btn-registro:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 0, 0, 0.6);
}

.btn-registro:active {
    transform: translateY(-1px);
}

.btn-registro i {
    margin-right: 0.5rem;
}

/* Display de información del cliente */
.cliente-info-display {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.8) 0%, rgba(26, 26, 26, 0.9) 100%);
    border: 3px solid var(--color-primary);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 15px 60px rgba(255, 0, 0, 0.4);
    animation: slideInUp 0.6s ease;
}

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

.display-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid rgba(255, 0, 0, 0.3);
}

.display-header i {
    font-size: 4rem;
    color: var(--color-green-neon);
    margin-bottom: 1rem;
    animation: checkPulse 2s infinite;
}

@keyframes checkPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.display-header h3 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    letter-spacing: 2px;
}

.display-header p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.1rem;
}

.display-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.info-item-display {
    background: rgba(255, 0, 0, 0.05);
    border: 1px solid rgba(255, 0, 0, 0.2);
    border-radius: 15px;
    padding: 1.5rem;
    transition: var(--transition-fast);
}

.info-item-display:hover {
    background: rgba(255, 0, 0, 0.1);
    border-color: rgba(255, 0, 0, 0.4);
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(255, 0, 0, 0.2);
}

.info-item-display .label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.8rem;
}

.info-item-display .label i {
    font-size: 1.2rem;
}

.info-item-display .value {
    color: var(--color-white);
    font-size: 1.1rem;
    font-weight: 500;
    word-wrap: break-word;
}

.info-item-display.highlight {
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.15) 0%, rgba(255, 0, 0, 0.05) 100%);
    border: 2px solid rgba(255, 0, 0, 0.4);
}

.info-item-display.highlight .value {
    color: var(--color-yellow);
    font-size: 1.3rem;
    font-weight: 700;
}

.info-item-display.full-width {
    grid-column: 1 / -1;
}

/* Acciones del display */
.display-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    padding-top: 2rem;
    border-top: 2px solid rgba(255, 0, 0, 0.3);
}

.display-actions .btn {
    min-width: 200px;
    padding: 1rem 2rem;
    font-size: 1rem;
}

.display-actions .btn i {
    margin-right: 0.5rem;
}

/* Animación de entrada para items */
.info-item-display {
    animation: fadeInItem 0.5s ease backwards;
}

.info-item-display:nth-child(1) { animation-delay: 0.1s; }
.info-item-display:nth-child(2) { animation-delay: 0.2s; }
.info-item-display:nth-child(3) { animation-delay: 0.3s; }
.info-item-display:nth-child(4) { animation-delay: 0.4s; }
.info-item-display:nth-child(5) { animation-delay: 0.5s; }
.info-item-display:nth-child(6) { animation-delay: 0.6s; }
.info-item-display:nth-child(7) { animation-delay: 0.7s; }
.info-item-display:nth-child(8) { animation-delay: 0.8s; }

@keyframes fadeInItem {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .registro-form {
        padding: 2rem 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .cliente-info-display {
        padding: 2rem 1.5rem;
    }
    
    .display-content {
        grid-template-columns: 1fr;
    }
    
    .display-actions {
        flex-direction: column;
    }
    
    .display-actions .btn {
        width: 100%;
    }
    
    .display-header h3 {
        font-size: 2rem;
    }
    
    .display-header i {
        font-size: 3rem;
    }
}

@media (max-width: 480px) {
    .registro-cliente {
        padding: var(--spacing-md) 0;
    }
    
    .registro-form {
        padding: 1.5rem 1rem;
    }
    
    .cliente-info-display {
        padding: 1.5rem 1rem;
    }
}