/* ================================================================
   GLUTACORE+ LANDING PAGE CSS - PARTE 1: BASE Y VARIABLES
   Diseño mobile-first, dark theme con tonos azules
   ================================================================ */

/* 🎨 VARIABLES GLOBALES Y PALETA DE COLORES */
:root {
    /* Background and neutrals */
    --color-bg: #121212;             
    --color-negro-profundo: #0A0A0A; 
    --color-negro-principal: #1A1A1A;
    --color-gris-oscuro: #2A2A2A;    
    --bg-section-1: #1A1A1A; 
    --bg-section-2: #181825; 
    --bg-section-3: #202A35;
    --bg-section-blue: #03045e;
    --bg-section-blue-2: #023e8a;
    --color-bg-blue-dark: #0F172A;
    --color-text-main: #ffffff;
    --color-text-secondary: #c7d2fe;

    /* Buttons and accents */ 
    --color-btn-primary: #3B82F6;
    --color-btn-hover: #2563EB;
    
    /* Degradados principales */
    --gradient-primary: linear-gradient(135deg, #60A5FA 0%, #3B82F6 50%, #1D4ED8 100%);
    --gradient-secondary: linear-gradient(90deg, #3B82F6 0%, #2563EB 50%, #1E3A8A 100%);
    --gradient-button: linear-gradient(135deg, #3B82F6 0%, #2563EB 50%, #1E40AF 100%);
    --gradient-blue-dark: linear-gradient(90deg, #1E3A8A 0%, #1E40AF 50%, #1E3A8A 100%);
    --gradient-blue-gray: linear-gradient(90deg, #1E3A8A 0%, #334155 50%, #64748B 100%);
    --gradient-blue-black: linear-gradient(90deg, #1E3A8A 0%, #0F172A 50%, #000000 100%);

    /* Colores semánticos */
    --color-primary: #3B82F6;
    --color-accent: #60A5FA;
    --color-background-primary: var(--color-negro-profundo);
    --color-background-secondary: var(--color-negro-principal);
    --color-background-card: var(--color-gris-oscuro);
    --color-text-primary: #ffffff;
    --color-text-secondary: #c7d2fe;
    --color-text-muted: #9CA3AF;
    --color-text-accent: #60A5FA;
    
    /* Variaciones con transparencia */
    --color-negro-alpha-95: rgba(10, 10, 10, 0.95);
    --color-negro-alpha-80: rgba(26, 26, 26, 0.8);
    --color-negro-alpha-60: rgba(26, 26, 26, 0.6);
    --color-blue-alpha-20: rgba(59, 130, 246, 0.2);
    --color-blue-alpha-10: rgba(59, 130, 246, 0.1);
    --color-blanco-alpha-90: rgba(255, 255, 255, 0.9);
    --color-blanco-alpha-70: rgba(255, 255, 255, 0.7);
    --color-blanco-alpha-20: rgba(255, 255, 255, 0.2);
    
    /* Sistema de espaciado MOBILE FIRST */
    --space-xs: 0.25rem;  
    --space-sm: 0.5rem;    
    --space-md: 1rem;      
    --space-lg: 1.5rem;    
    --space-xl: 2rem;     
    --space-2xl: 3rem;     
    --space-3xl: 4rem;     
    --space-4xl: 5rem;     
    --space-5xl: 7rem;     
    --space-6xl: 8.5rem;
    
    /* Sistema tipográfico MOBILE FIRST */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
    
    /* Pesos tipográficos */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;
    
    /* Tamaños de tipografía MOBILE FIRST */
    --text-xs: 0.675rem;    
    --text-sm: 0.8rem;     
    --text-base: 0.9rem;   
    --text-lg: 1rem;        
    --text-xl: 1.125rem;  
    --text-2xl: 1.35rem;   
    --text-3xl: 1.6rem;    
    --text-4xl: 1.95rem;    
    --text-5xl: 2.2rem;    
    --text-6xl: 2.6rem;    
    
    /* Sistema de sombras */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    --shadow-button: 0 4px 14px rgba(59, 130, 246, 0.4);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.5);
    
    /* Sistema de bordes */
    --border-radius-sm: 0.25rem;   /* 4px */
    --border-radius-md: 0.5rem;    /* 8px */
    --border-radius-lg: 0.75rem;   /* 12px */
    --border-radius-xl: 1rem;      /* 16px */
    --border-radius-2xl: 1.5rem;   /* 24px */
    --border-radius-full: 9999px;
    
    /* Sistema de transiciones */
    --transition-fast: 0.15s ease-out;
    --transition-medium: 0.3s ease-out;
    --transition-slow: 0.5s ease-out;
    --transition-bounce: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Efectos especiales */
    --blur-sm: blur(4px);
    --blur-md: blur(8px);
    --blur-lg: blur(16px);
    --backdrop-blur: blur(10px);

    /* Breakpoints para responsive */
    --bp-sm: 640px;
    --bp-md: 768px;
    --bp-lg: 1024px;
    --bp-xl: 1280px;
    --bp-2xl: 1536px;
}

/* 🔄 RESET Y NORMALIZACIÓN */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-background-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 📱 CONTENEDOR PRINCIPAL */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* 🎯 UTILIDADES GLOBALES */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 🏷️ BADGES Y ETIQUETAS */
.section-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-blue-alpha-10);
    color: var(--color-accent);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-lg);
}

/* 📝 TIPOGRAFÍA BASE */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-lg);
}

h1 {
    font-size: var(--text-4xl);
    font-weight: var(--font-weight-black);
}

h2 {
    font-size: var(--text-3xl);
    font-weight: var(--font-weight-extrabold);
}

h3 {
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-bold);
}

h4 {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-semibold);
}

p {
    margin-bottom: var(--space-lg);
    color: var(--color-text-secondary);
}

/* 🔗 ENLACES */
a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-btn-hover);
}

/* 📋 LISTAS */
ul, ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

li {
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

/* 🖼️ IMÁGENES OPTIMIZADAS */
img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-md);
    transition: transform var(--transition-medium);
}

img:hover {
    transform: scale(1.02);
}

/* 🎯 BOTONES BASE */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--border-radius-xl);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border: 1px solid var(--color-blue-alpha-20);
}

.btn-secondary:hover {
    background: var(--color-blue-alpha-10);
    transform: translateY(-1px);
}

.btn-primary.large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--text-lg);
}

.btn-arrow {
    transition: transform var(--transition-medium);
}

.btn-primary:hover .btn-arrow {
    transform: translateX(4px);
}

/* 📱 RESPONSIVE ADJUSTMENTS - MOBILE FIRST */
@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-xl);
    }
    
    h1 {
        font-size: var(--text-5xl);
    }
    
    h2 {
        font-size: var(--text-4xl);
    }
    
    h3 {
        font-size: var(--text-3xl);
    }
}

@media (min-width: 768px) {
    h1 {
        font-size: var(--text-6xl);
    }
    
    .container {
        padding: 0 var(--space-2xl);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-3xl);
    }
}

/* 🎨 SECCIONES BASE */
section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header h2 {
    margin-bottom: var(--space-lg);
}

.section-header p {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ================================================================
   GLUTACORE+ LANDING PAGE CSS - PARTE 2: NAVEGACIÓN Y HERO
   Navegación no fija + Hero Section con efectos
   ================================================================ */

/* 🧭 NAVEGACIÓN - NO FIJA */
.navbar {
    background: var(--color-negro-alpha-95);
    backdrop-filter: var(--backdrop-blur);
    border-bottom: 1px solid var(--color-blue-alpha-20);
    padding: var(--space-lg) 0;
    position: relative;
    z-index: 1000;
}

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

.nav-brand h2 {
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-black);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.nav-menu {
    display: none;
    align-items: center;
    gap: var(--space-xl);
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-medium);
}

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

.cta-nav {
    padding: var(--space-sm) var(--space-lg);
    background: var(--gradient-button);
    color: white !important;
    border-radius: var(--border-radius-lg);
    font-weight: var(--font-weight-semibold);
}

.cta-nav:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-button);
}

.cta-nav::after {
    display: none;
}

/* 🍔 MENÚ HAMBURGUESA */
.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.menu-toggle span {
    width: 24px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
    transition: all var(--transition-medium);
}

.menu-toggle:hover span {
    background: var(--color-btn-hover);
}

/* 📱 MENÚ MÓVIL */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-negro-alpha-95);
    backdrop-filter: var(--backdrop-blur);
    z-index: 9999;
    display: none;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.mobile-menu-overlay.active {
    display: flex;
    opacity: 1;
}

.mobile-menu {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    text-align: center;
}

.menu-close {
    position: absolute;
    top: var(--space-xl);
    right: var(--space-xl);
    background: none;
    border: none;
    color: var(--color-accent);
    font-size: var(--text-3xl);
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.mobile-nav-link {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.cta-mobile {
    padding: var(--space-lg) var(--space-2xl);
    background: var(--gradient-button);
    color: white !important;
    border-radius: var(--border-radius-xl);
    margin-top: var(--space-lg);
}

/* 🚀 HERO SECTION */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(ellipse at center, var(--bg-section-blue-2) 0%, var(--color-negro-profundo) 70%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(59, 130, 246, 0.3), transparent),
        radial-gradient(1px 1px at 40px 70px, rgba(96, 165, 250, 0.2), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(59, 130, 246, 0.4), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(96, 165, 250, 0.2), transparent);
    background-repeat: repeat;
    background-size: 200px 150px;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(30px, -30px) rotate(120deg);
    }
    66% {
        transform: translate(-20px, 20px) rotate(240deg);
    }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    text-align: center;
}

.hero-badge {
    margin-bottom: var(--space-xl);
}

.hero-badge span {
    display: inline-flex;
    align-items: center;
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-blue-alpha-10);
    color: var(--color-accent);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    backdrop-filter: var(--backdrop-blur);
}

.hero-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-weight-black);
    line-height: 1.1;
    margin-bottom: var(--space-xl);
    color: var(--color-text-primary);
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.hero-features span {
    padding: var(--space-xs) var(--space-md);
    background: var(--color-blue-alpha-10);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-lg);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

.hero-molecules {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.molecule {
    padding: var(--space-sm) var(--space-lg);
    background: var(--gradient-blue-dark);
    color: var(--color-accent);
    border-radius: var(--border-radius-xl);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-bold);
    font-family: var(--font-mono);
    border: 1px solid var(--color-blue-alpha-20);
    box-shadow: var(--shadow-md);
}

.hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

/* 🖼️ HERO VISUAL */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.product-showcase {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}

.product-image {
    width: 100%;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-xl);
    filter: drop-shadow(0 0 30px rgba(59, 130, 246, 0.3));
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.element {
    position: absolute;
    font-size: var(--text-2xl);
    background: var(--color-blue-alpha-10);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-full);
    padding: var(--space-md);
    animation: levitate 3s ease-in-out infinite;
}

.element-1 {
    top: 10%;
    right: -10%;
    animation-delay: 0s;
}

.element-2 {
    bottom: 20%;
    left: -15%;
    animation-delay: 1s;
}

.element-3 {
    top: 50%;
    right: -20%;
    animation-delay: 2s;
}

@keyframes levitate {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-10px) rotate(5deg);
    }
}

/* 📱 RESPONSIVE HERO */
@media (min-width: 640px) {
    .hero-title {
        font-size: var(--text-5xl);
    }
    
    .hero-actions {
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--text-6xl);
    }
    
    .nav-menu {
        display: flex;
    }
    
    .menu-toggle {
        display: none;
    }
    
    .hero .container {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4xl);
    }
    
    .hero-content {
        text-align: left;
    }
    
    .hero-features {
        justify-content: flex-start;
    }
    
    .hero-actions {
        justify-content: flex-start;
    }
}

@media (min-width: 1024px) {
    .hero {
        padding: var(--space-6xl) 0;
    }
}

/* ================================================================
   GLUTACORE+ LANDING PAGE CSS - PARTE 3: VALIDACIÓN Y BENEFICIOS
   Secciones de Validación Científica y Beneficios Comprobados
   ================================================================ */

/* 🔬 VALIDACIÓN CIENTÍFICA */
.validation {
    background: var(--bg-section-1);
    position: relative;
}

.validation::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.3;
}

.validation-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.validation-card {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-xl);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.validation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left var(--transition-slow);
}

.validation-card:hover::before {
    left: 100%;
}

.validation-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-card);
}

.card-icon {
    margin-bottom: var(--space-lg);
    display: flex;
    justify-content: center;
}

.card-icon img {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-full);
    border: 2px solid var(--color-blue-alpha-20);
    padding: var(--space-sm);
    background: var(--color-blue-alpha-10);
}

.validation-card h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    font-size: var(--text-xl);
}

.validation-card p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* 🌟 BENEFICIOS SECTION */
.benefits {
    background: var(--bg-section-2);
    position: relative;
}

.benefits::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(96, 165, 250, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    position: relative;
    z-index: 2;
}

.benefit-card {
    background: var(--color-background-card);
    border-radius: var(--border-radius-2xl);
    overflow: hidden;
    border: 1px solid var(--color-blue-alpha-20);
    transition: all var(--transition-medium);
    position: relative;
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-accent);
}

.benefit-visual {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.benefit-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
    border-radius: 0;
}

.benefit-card:hover .benefit-visual img {
    transform: scale(1.05);
}

.benefit-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-blue-black);
    opacity: 0.7;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-medium);
}

.benefit-card:hover .benefit-overlay {
    opacity: 0.5;
}

.benefit-icon {
    font-size: var(--text-4xl);
    color: var(--color-accent);
    text-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
}

.benefit-content {
    padding: var(--space-xl);
}

.benefit-content h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    font-size: var(--text-2xl);
}

.benefit-claim {
    font-style: italic;
    color: var(--color-accent);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-lg);
    font-size: var(--text-lg);
    line-height: 1.5;
    padding: var(--space-md);
    background: var(--color-blue-alpha-10);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--color-accent);
}

.benefit-science {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.benefit-mechanism {
    background: var(--color-blue-alpha-10);
    padding: var(--space-md);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-blue-alpha-20);
    margin: 0;
}

.benefit-mechanism strong {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

/* 📱 RESPONSIVE VALIDACIÓN Y BENEFICIOS */
@media (min-width: 640px) {
    .validation-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2xl);
    }
}

@media (min-width: 768px) {
    .validation-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .validation-card {
        padding: var(--space-2xl);
    }
    
    .benefit-content {
        padding: var(--space-2xl);
    }
    
    .benefit-visual {
        height: 250px;
    }
}

@media (min-width: 1280px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-3xl);
    }
    
    .benefit-visual {
        height: 300px;
    }
}

/* ================================================================
   GLUTACORE+ LANDING PAGE CSS - PARTE 4: INGREDIENTES
   Sección de Ingredientes Clave organizados por categorías
   ================================================================ */

/* 🔬 INGREDIENTES SECTION */
.ingredients {
    background: var(--bg-section-3);
    position: relative;
    overflow: hidden;
}

.ingredients::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(96, 165, 250, 0.03) 0%, transparent 50%),
        linear-gradient(180deg, transparent 0%, rgba(59, 130, 246, 0.02) 100%);
    pointer-events: none;
}

.ingredients .container {
    position: relative;
    z-index: 2;
}

/* 📂 CATEGORÍAS DE INGREDIENTES */
.ingredient-category {
    margin-bottom: var(--space-5xl);
}

.ingredient-category:last-child {
    margin-bottom: 0;
}

.category-title {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2xl);
    padding: var(--space-lg);
    background: var(--color-blue-alpha-10);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-xl);
    backdrop-filter: var(--backdrop-blur);
}

.category-icon {
    font-size: var(--text-3xl);
    background: var(--gradient-primary);
    padding: var(--space-sm);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    height: 60px;
}

/* 🧪 GRID DE INGREDIENTES */
.ingredients-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.ingredient-card {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-2xl);
    overflow: hidden;
    transition: all var(--transition-medium);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.ingredient-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}

.ingredient-card:hover::after {
    transform: scaleX(1);
}

.ingredient-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

/* 🖼️ VISUAL DE INGREDIENTE */
.ingredient-visual {
    height: 160px;
    overflow: hidden;
    position: relative;
}

.ingredient-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
    border-radius: 0;
}

.ingredient-card:hover .ingredient-visual img {
    transform: scale(1.08);
}

.ingredient-visual::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: linear-gradient(to top, var(--color-background-card), transparent);
}

/* 📝 CONTENIDO DE INGREDIENTE */
.ingredient-content {
    padding: var(--space-xl);
}

.ingredient-content h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    font-size: var(--text-lg);
    font-weight: var(--font-weight-semibold);
    line-height: 1.3;
}

.ingredient-function {
    color: var(--color-text-secondary);
    font-size: var(--text-base);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
    font-style: italic;
}

.ingredient-science {
    background: var(--color-blue-alpha-10);
    padding: var(--space-md);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--color-accent);
    margin-bottom: var(--space-lg);
}

.ingredient-science strong {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

/* 🏷️ TIPOS DE INGREDIENTES */
.ingredient-types {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.ingredient-types span {
    padding: var(--space-xs) var(--space-sm);
    background: var(--gradient-blue-dark);
    color: var(--color-accent);
    border-radius: var(--border-radius-md);
    font-size: var(--text-xs);
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--color-blue-alpha-20);
}

/* 📱 RESPONSIVE INGREDIENTES */
@media (min-width: 640px) {
    .ingredients-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2xl);
    }
    
    .category-title {
        font-size: var(--text-3xl);
    }
}

@media (min-width: 768px) {
    .ingredient-visual {
        height: 180px;
    }
    
    .ingredient-content {
        padding: var(--space-2xl);
    }
    
    .ingredient-content h4 {
        font-size: var(--text-xl);
    }
}

@media (min-width: 1024px) {
    .ingredients-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-2xl);
    }
    
    .ingredient-visual {
        height: 200px;
    }
    
    .ingredient-category {
        margin-bottom: var(--space-6xl);
    }
}

@media (min-width: 1280px) {
    .ingredients-grid {
        gap: var(--space-3xl);
    }
    
    .ingredient-visual {
        height: 220px;
    }
}

/* ================================================================
   GLUTACORE+ LANDING PAGE CSS - PARTE 5: NAD+ Y NRF2
   Secciones NAD+ Deep Dive y Activación NRF2
   ================================================================ */

/* âš¡ NAD+ SECTION */
.nad-section {
    background: var(--color-bg-blue-dark);
    position: relative;
    overflow: hidden;
}

.nad-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 30% 0%, rgba(59, 130, 246, 0.1) 0%, transparent 70%),
        radial-gradient(ellipse at 70% 100%, rgba(96, 165, 250, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.nad-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.nad-text {
    order: 2;
}

.nad-intro {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
}

/* 🚨 CRISIS DEL NAD+ */
.nad-crisis {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-2xl);
    padding: var(--space-xl);
    margin-bottom: var(--space-2xl);
    position: relative;
    overflow: hidden;
}

.nad-crisis::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, #ef4444, #dc2626);
}

.nad-crisis h3 {
    color: #ef4444;
    margin-bottom: var(--space-lg);
    font-size: var(--text-xl);
}

.crisis-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat {
    text-align: center;
    background: var(--color-blue-alpha-10);
    padding: var(--space-lg);
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--color-blue-alpha-20);
}

.stat-number {
    display: block;
    font-size: var(--text-4xl);
    font-weight: var(--font-weight-black);
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.crisis-effects {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

.crisis-effects li {
    color: #ef4444;
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
}

/* ✅ SOLUCIÓN NAD+ */
.nad-solution {
    background: var(--color-blue-alpha-10);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-2xl);
    padding: var(--space-xl);
    position: relative;
    overflow: hidden;
}

.nad-solution::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
}

.nad-solution h3 {
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
    font-size: var(--text-xl);
}

.strategy-pillars {
    display: grid;
    gap: var(--space-lg);
}

.pillar {
    background: var(--color-background-card);
    padding: var(--space-lg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-blue-alpha-20);
    transition: all var(--transition-medium);
}

.pillar:hover {
    transform: translateY(-2px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.pillar strong {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

/* 🖼️ NAD+ VISUAL */
.nad-visual {
    order: 1;
    position: relative;
    display: flex;
    justify-content: center;
}

.nad-visual img {
    max-width: 100%;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-xl);
    filter: drop-shadow(0 0 20px rgba(59, 130, 246, 0.3));
}

.nad-overlay {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-negro-alpha-95);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-xl);
    padding: var(--space-lg);
}

.nad-cycle {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-family: var(--font-mono);
    font-weight: var(--font-weight-bold);
}

.cycle-element {
    color: var(--color-accent);
    font-size: var(--text-lg);
}

.cycle-arrow {
    color: var(--color-text-secondary);
    font-size: var(--text-xl);
}

/* 🧬 NRF2 SECTION */
.nrf2-section {
    background: var(--bg-section-1);
    position: relative;
}

.nrf2-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.5;
}

/* 🔬 MECANISMO NRF2 */
.nrf2-mechanism {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
    margin-bottom: var(--space-4xl);
}

.mechanism-visual {
    order: 2;
}

.mechanism-visual img {
    width: 100%;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-lg);
}

.mechanism-steps {
    order: 1;
}

.mechanism-steps h3 {
    margin-bottom: var(--space-2xl);
    color: var(--color-text-primary);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.step {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-xl);
    padding: var(--space-lg);
    text-align: center;
    transition: all var(--transition-medium);
    position: relative;
}

.step:hover {
    transform: translateY(-3px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius-full);
    font-weight: var(--font-weight-bold);
    font-size: var(--text-lg);
    margin-bottom: var(--space-md);
}

.step h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    font-size: var(--text-lg);
}

.step p {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.5;
    margin: 0;
}

/* 🎯 ACTIVADORES NRF2 */
.nrf2-activators h3 {
    text-align: center;
    margin-bottom: var(--space-2xl);
    color: var(--color-text-primary);
}

.activators-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.activator {
    text-align: center;
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-medium);
}

.activator:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.activator-icon {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-lg);
    display: block;
}

.activator h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    font-size: var(--text-lg);
}

.activator p {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.6;
    margin: 0;
}

/* 📱 RESPONSIVE NAD+ Y NRF2 */
@media (min-width: 640px) {
    .crisis-effects {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .activators-grid {
        gap: var(--space-2xl);
    }
}

@media (min-width: 768px) {
    .nad-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4xl);
    }
    
    .nad-text {
        order: 1;
    }
    
    .nad-visual {
        order: 2;
    }
    
    .nrf2-mechanism {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4xl);
    }
    
    .mechanism-visual {
        order: 1;
    }
    
    .mechanism-steps {
        order: 2;
    }
    
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .strategy-pillars {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .steps-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .nad-crisis,
    .nad-solution {
        padding: var(--space-2xl);
    }
}

/* ================================================================
   GLUTACORE+ LANDING PAGE CSS - PARTE 6: USO Y ADVERTENCIAS
   Protocolo de Uso, Poblaciones Objetivo y Advertencias de Seguridad
   ================================================================ */

/* 📋 USAGE SECTION */
.usage {
    background: var(--bg-section-2);
    position: relative;
    overflow: hidden;
}

.usage::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(135deg, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(96, 165, 250, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.usage-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4xl);
    position: relative;
    z-index: 2;
}

.usage-main {
    order: 1;
}

.safety-info {
    order: 2;
}

/* 💊 DOSAGE CARD */
.dosage-card {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-2xl);
    padding: var(--space-2xl);
    margin-bottom: var(--space-3xl);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    align-items: center;
    position: relative;
    overflow: hidden;
}

.dosage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

.dosage-visual {
    text-align: center;
}

.dosage-visual img {
    width: 120px;
    height: 120px;
    border-radius: var(--border-radius-full);
    border: 3px solid var(--color-blue-alpha-20);
    padding: var(--space-md);
    background: var(--color-blue-alpha-10);
    box-shadow: var(--shadow-lg);
}

.dosage-info h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    font-size: var(--text-2xl);
}

.dosage-amount {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    background: var(--color-blue-alpha-10);
    padding: var(--space-lg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-blue-alpha-20);
    text-align: center;
    margin-bottom: var(--space-lg);
}

.dosage-justification {
    background: var(--color-blue-alpha-10);
    padding: var(--space-lg);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--color-accent);
    margin: 0;
}

.dosage-justification strong {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

/* 🎯 POBLACIONES ÓPTIMAS */
.optimal-populations h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-2xl);
    text-align: center;
}

.populations-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.population-group {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.population-group::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.high-priority::before {
    background: linear-gradient(to bottom, #10b981, #059669);
}

.proven-benefit::before {
    background: linear-gradient(to bottom, #3b82f6, #2563eb);
}

.special-cases::before {
    background: linear-gradient(to bottom, #f59e0b, #d97706);
}

.population-group:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.population-group h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    font-size: var(--text-xl);
    font-weight: var(--font-weight-semibold);
}

.high-priority h4 {
    color: #10b981;
}

.proven-benefit h4 {
    color: var(--color-accent);
}

.special-cases h4 {
    color: #f59e0b;
}

.population-group ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.population-group li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-blue-alpha-20);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.population-group li:last-child {
    border-bottom: none;
}

.population-group li::before {
    content: '✓';
    color: var(--color-accent);
    font-weight: var(--font-weight-bold);
    margin-right: var(--space-sm);
}

/* 🚨 ADVERTENCIAS DE SEGURIDAD */
.warnings-section {
    background: var(--color-background-card);
    border: 2px solid #ef4444;
    border-radius: var(--border-radius-2xl);
    padding: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    position: relative;
}

.warnings-section::before {
    content: '⚠️';
    position: absolute;
    top: -15px;
    left: var(--space-xl);
    background: var(--color-background-card);
    padding: 0 var(--space-md);
    font-size: var(--text-2xl);
}

.warnings-section h3 {
    color: #ef4444;
    margin-bottom: var(--space-xl);
    text-align: center;
    font-size: var(--text-2xl);
}

.warning-category {
    margin-bottom: var(--space-xl);
}

.warning-category:last-child {
    margin-bottom: 0;
}

.warning-category h4 {
    margin-bottom: var(--space-lg);
    font-size: var(--text-lg);
    font-weight: var(--font-weight-semibold);
}

.contraindications h4 {
    color: #ef4444;
}

.precautions h4 {
    color: #f59e0b;
}

.excluded h4 {
    color: #8b5cf6;
}

.warning-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.warning-category li {
    padding: var(--space-sm) var(--space-lg);
    margin-bottom: var(--space-sm);
    background: var(--color-blue-alpha-10);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid #ef4444;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.precautions li {
    border-left-color: #f59e0b;
}

.excluded li {
    border-left-color: #8b5cf6;
}

.precaution-item {
    background: var(--color-blue-alpha-10);
    padding: var(--space-lg);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid #f59e0b;
    margin-bottom: var(--space-lg);
}

.precaution-item:last-child {
    margin-bottom: 0;
}

.precaution-item strong {
    color: #f59e0b;
    font-weight: var(--font-weight-semibold);
}

/* 🩺 CONSULTA MÉDICA */
.medical-consultation {
    margin-top: var(--space-xl);
}

.consultation-card {
    background: var(--color-blue-alpha-10);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-xl);
    padding: var(--space-xl);
    text-align: center;
    position: relative;
}

.consultation-card::before {
    content: '🩺';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-blue-alpha-10);
    padding: 0 var(--space-md);
    font-size: var(--text-2xl);
}

.consultation-card h4 {
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
    font-size: var(--text-xl);
}

.consultation-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.consultation-card li {
    padding: var(--space-sm) 0;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.consultation-card li::before {
    content: '👨‍⚕️';
    margin-right: var(--space-sm);
}

/* 📱 RESPONSIVE USO Y ADVERTENCIAS */
@media (min-width: 640px) {
    .populations-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2xl);
    }
    
    .dosage-card {
        grid-template-columns: auto 1fr;
        gap: var(--space-2xl);
    }
    
    .dosage-visual {
        text-align: left;
    }
}

@media (min-width: 768px) {
    .usage-content {
        grid-template-columns: 2fr 1fr;
        gap: var(--space-5xl);
    }
    
    .usage-main {
        order: 1;
    }
    
    .safety-info {
        order: 2;
    }
}

@media (min-width: 1024px) {
    .populations-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .dosage-card {
        padding: var(--space-3xl);
    }
    
    .warnings-section {
        padding: var(--space-3xl);
    }
}

/* ================================================================
   GLUTACORE+ LANDING PAGE CSS - PARTE 7: FAQ Y RESPALDO CIENTÍFICO
   Sección FAQ Interactiva y Referencias Científicas
   ================================================================ */

/* ❓ FAQ SECTION */
.faq-section {
    background: var(--bg-section-3);
    position: relative;
    overflow: hidden;
}

.faq-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 15% 30%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 85% 70%, rgba(96, 165, 250, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.faq-container {
    position: relative;
    z-index: 2;
}

/* 📂 CATEGORÍAS FAQ */
.faq-category {
    margin-bottom: var(--space-4xl);
}

.faq-category:last-child {
    margin-bottom: 0;
}

.faq-category-title {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl);
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-xl);
    backdrop-filter: var(--backdrop-blur);
}

.faq-category-title .category-icon {
    font-size: var(--text-3xl);
    background: var(--gradient-primary);
    padding: var(--space-md);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    height: 60px;
}

/* 🎯 FAQ ITEMS */
.faq-items {
    display: grid;
    gap: var(--space-lg);
}

.faq-item {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    transition: all var(--transition-medium);
}

.faq-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: var(--space-xl);
    text-align: left;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    font-family: var(--font-primary);
    font-size: var(--text-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.faq-question::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--color-blue-alpha-10), transparent);
    transition: left var(--transition-medium);
}

.faq-question:hover::before {
    left: 100%;
}

.faq-question:hover {
    color: var(--color-accent);
}

.faq-icon {
    font-size: var(--text-2xl);
    color: var(--color-accent);
    transition: transform var(--transition-medium);
    font-weight: var(--font-weight-normal);
    flex-shrink: 0;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
    color: var(--color-btn-hover);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
    background: var(--color-blue-alpha-10);
    border-top: 1px solid var(--color-blue-alpha-20);
}

.faq-item.active .faq-answer {
    max-height: 1000px;
}

.faq-answer > div {
    padding: var(--space-xl);
}

.faq-answer p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer strong {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

.faq-answer ul {
    margin: var(--space-lg) 0;
    padding-left: var(--space-xl);
}

.faq-answer li {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

/* 📞 FAQ CTA */
.faq-cta {
    margin-top: var(--space-4xl);
    text-align: center;
}

.faq-cta-content {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-2xl);
    padding: var(--space-3xl);
    position: relative;
    overflow: hidden;
}

.faq-cta-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

.faq-cta h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    font-size: var(--text-2xl);
}

.faq-cta p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    font-size: var(--text-lg);
}

/* 📚 RESPALDO CIENTÍFICO */
.scientific-backing {
    background: var(--color-bg-blue-dark);
    position: relative;
}

.scientific-backing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 10%, rgba(59, 130, 246, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 90%, rgba(96, 165, 250, 0.06) 0%, transparent 60%);
    pointer-events: none;
}

/* 🏛️ INSTITUCIONES */
.institutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-4xl);
    position: relative;
    z-index: 2;
}

.institution {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-xl);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.institution::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}

.institution:hover::before {
    transform: scaleX(1);
}

.institution:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.institution img {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-full);
    margin-bottom: var(--space-lg);
    border: 2px solid var(--color-blue-alpha-20);
    padding: var(--space-sm);
    background: var(--color-blue-alpha-10);
}

.institution h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    font-size: var(--text-lg);
    font-weight: var(--font-weight-semibold);
}

.institution p {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.6;
    margin: 0;
}

/* 📖 REFERENCIAS */
.references {
    position: relative;
    z-index: 2;
}

.references h3 {
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: var(--space-2xl);
    font-size: var(--text-2xl);
}

.references-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.reference {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    transition: all var(--transition-medium);
}

.reference:hover {
    border-color: var(--color-accent);
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.reference .journal {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-base);
    flex: 1;
}

.reference .year {
    color: var(--color-accent);
    font-weight: var(--font-weight-medium);
    font-size: var(--text-sm);
    background: var(--color-blue-alpha-10);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--border-radius-md);
    flex-shrink: 0;
}

/* 📱 RESPONSIVE FAQ Y CIENTÍFICO */
@media (min-width: 640px) {
    .faq-question {
        font-size: var(--text-xl);
    }
    
    .institutions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2xl);
    }
    
    .references-list {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xl);
    }
}

@media (min-width: 768px) {
    .faq-category-title {
        font-size: var(--text-3xl);
    }
    
    .institutions-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .faq-answer > div {
        padding: var(--space-2xl);
    }
}

@media (min-width: 1024px) {
    .faq-question {
        padding: var(--space-2xl);
    }
    
    .faq-cta-content {
        padding: var(--space-4xl);
    }
    
    .institution {
        padding: var(--space-2xl);
    }
}

/* ================================================================
   GLUTACORE+ LANDING PAGE CSS - PARTE 8: CTA FINAL Y FOOTER
   CTA Final, Footer, Back to Top y Elementos Auxiliares
   ================================================================ */

/* ✨ FINAL CTA SECTION */
.final-cta {
    background: var(--color-negro-profundo);
    position: relative;
    overflow: hidden;
    padding: var(--space-6xl) 0;
}

.final-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 50% 0%, var(--bg-section-blue) 0%, transparent 70%),
        radial-gradient(ellipse at 0% 100%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 100% 100%, rgba(96, 165, 250, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.cta-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.cta-text {
    text-align: center;
}

.cta-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 📊 DICTAMEN DE EXPERTOS */
.expert-verdict {
    background: var(--color-background-card);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-2xl);
    padding: var(--space-2xl);
    margin-bottom: var(--space-3xl);
    position: relative;
    overflow: hidden;
}

.expert-verdict::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

.expert-verdict h3 {
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: var(--space-2xl);
    font-size: var(--text-2xl);
}

.verdict-points {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.verdict-positive,
.verdict-negative {
    background: var(--color-blue-alpha-10);
    border-radius: var(--border-radius-xl);
    padding: var(--space-xl);
    border-left: 4px solid;
}

.verdict-positive {
    border-left-color: #10b981;
}

.verdict-negative {
    border-left-color: #ef4444;
}

.verdict-positive h4 {
    color: #10b981;
    margin-bottom: var(--space-lg);
    font-size: var(--text-lg);
}

.verdict-negative h4 {
    color: #ef4444;
    margin-bottom: var(--space-lg);
    font-size: var(--text-lg);
}

.verdict-positive ul,
.verdict-negative ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.verdict-positive li,
.verdict-negative li {
    padding: var(--space-sm) 0;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    line-height: 1.6;
}

.verdict-positive li::before {
    content: '✓';
    color: #10b981;
    font-weight: var(--font-weight-bold);
    margin-right: var(--space-sm);
}

.verdict-negative li::before {
    content: '✗';
    color: #ef4444;
    font-weight: var(--font-weight-bold);
    margin-right: var(--space-sm);
}

/* 🎯 CTA ACTIONS */
.cta-actions {
    text-align: center;
}

.cta-guarantee {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    margin-top: var(--space-lg);
    font-weight: var(--font-weight-medium);
}

/* 🖼️ CTA VISUAL */
.cta-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.product-hero {
    position: relative;
    max-width: 350px;
    text-align: center;
}

.product-hero img {
    width: 100%;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-xl);
    filter: drop-shadow(0 0 40px rgba(59, 130, 246, 0.4));
    transition: transform var(--transition-slow);
}

.product-hero:hover img {
    transform: scale(1.05);
}

.product-highlights {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.highlight {
    position: absolute;
    background: var(--color-negro-alpha-95);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--color-blue-alpha-20);
    border-radius: var(--border-radius-lg);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent);
    animation: pulse 2s ease-in-out infinite;
}

.highlight:nth-child(1) {
    top: 10%;
    left: -15%;
    animation-delay: 0s;
}

.highlight:nth-child(2) {
    top: 25%;
    right: -20%;
    animation-delay: 0.5s;
}

.highlight:nth-child(3) {
    bottom: 30%;
    left: -20%;
    animation-delay: 1s;
}

.highlight:nth-child(4) {
    bottom: 10%;
    right: -15%;
    animation-delay: 1.5s;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.7;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

/* 💬 QUOTE FINAL */
.final-quote {
    text-align: center;
    margin-top: var(--space-4xl);
    position: relative;
    z-index: 2;
}

.final-quote blockquote {
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-medium);
    font-style: italic;
    color: var(--color-text-primary);
    line-height: 1.4;
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    padding: var(--space-xl) 0;
}

.final-quote blockquote::before,
.final-quote blockquote::after {
    content: '"';
    font-size: var(--text-6xl);
    color: var(--color-accent);
    font-weight: var(--font-weight-bold);
    position: absolute;
    opacity: 0.3;
}

.final-quote blockquote::before {
    top: -10px;
    left: -20px;
}

.final-quote blockquote::after {
    bottom: -40px;
    right: -20px;
}

/* 🦶 FOOTER */
.footer {
    background: var(--color-negro-principal);
    border-top: 1px solid var(--color-blue-alpha-20);
    padding: var(--space-4xl) 0 var(--space-2xl);
    position: relative;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand h3 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-black);
    margin-bottom: var(--space-md);
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: var(--text-base);
    margin: 0;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.link-group h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    font-size: var(--text-lg);
    font-weight: var(--font-weight-semibold);
}

.link-group a {
    display: block;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

.link-group a:hover {
    color: var(--color-accent);
    transform: translateX(2px);
}

.footer-bottom {
    border-top: 1px solid var(--color-blue-alpha-20);
    padding-top: var(--space-xl);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    margin-bottom: var(--space-sm);
}

.footer-bottom p:last-child {
    margin-bottom: 0;
}

.disclaimer {
    font-style: italic;
    opacity: 0.8;
}

/* ⬆️ BACK TO TOP */
.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 50px;
    height: 50px;
    background: var(--gradient-button);
    border: none;
    border-radius: var(--border-radius-full);
    color: white;
    font-size: var(--text-xl);
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    box-shadow: var(--shadow-button);
    transition: all var(--transition-medium);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.6);
}

/* 📱 RESPONSIVE CTA Y FOOTER */
@media (min-width: 640px) {
    .verdict-points {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2xl);
    }
    
    .footer-content {
        grid-template-columns: 2fr 3fr;
        gap: var(--space-4xl);
    }
    
    .final-quote blockquote {
        font-size: var(--text-3xl);
    }
}

@media (min-width: 768px) {
    .cta-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-5xl);
    }
    
    .cta-text {
        text-align: left;
    }
    
    .cta-actions {
        text-align: left;
    }
    
    .footer-links {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-2xl);
    }
}

@media (min-width: 1024px) {
    .expert-verdict {
        padding: var(--space-3xl);
    }
    
    .verdict-positive,
    .verdict-negative {
        padding: var(--space-2xl);
    }
    
    .final-cta {
        padding: var(--space-6xl) 0 var(--space-4xl);
    }
}