/* ========================================
   RESET Y VARIABLES CSS OPTIMIZADAS
======================================== */

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

:root {
    /* Colores */
    --primary: #1e40af;
    --primary-light: #3b82f6;
    --primary-dark: #1e3a8a;
    --primary-gradient: linear-gradient(135deg, #1e40af, #3b82f6);
    
    --secondary: #f59e0b;
    --secondary-light: #fbbf24;
    
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    
    /* Backgrounds */
    --background: #ffffff;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --surface-3: #f1f5f9;
    
    /* Text */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #ffffff;
    
    /* Borders */
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --border-dark: #cbd5e1;
    
    /* Fonts */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing - Optimizado para móvil */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Responsive spacing */
    --section-padding: clamp(2rem, 5vw, 4rem);
    --container-padding: clamp(1rem, 4vw, 1.5rem);
    
    /* Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* Layout */
    --nav-height: 4rem;
    --container-max-width: 1200px;
}

/* Dark theme */
[data-theme="dark"] {
    --background: #0f172a;
    --surface: #1e293b;
    --surface-2: #334155;
    --surface-3: #475569;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-inverse: #0f172a;
    
    --border: #334155;
    --border-light: #1e293b;
    --border-dark: #475569;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    :root {
        --spacing-xs: 0.25rem;
        --spacing-sm: 0.5rem;
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
        --nav-height: 3.5rem;
    }
}

/* ========================================
   BASE STYLES OPTIMIZADOS
======================================== */

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

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

/* ========================================
   UTILITY CLASSES OPTIMIZADAS
======================================== */

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.text-gradient {
    background: var(--text-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;
}

/* Desktop/Mobile visibility utilities */
.desktop-only {
    display: inline-flex;
}

.mobile-only {
    display: none;
}

@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
    
    .mobile-only {
        display: inline-flex;
    }
}

/* ========================================
   LOADING SCREEN OPTIMIZADA
======================================== */

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: var(--primary-gradient);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loading-content {
    text-align: center;
    color: var(--text-inverse);
    padding: var(--spacing-lg);
}

.loading-logo {
    margin-bottom: var(--spacing-xl);
}

.loading-spinner {
    margin: var(--spacing-xl) 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ========================================
   LOGO & BRANDING OPTIMIZADO
======================================== */

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-primary);
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon {
    width: clamp(1.25rem, 3vw, 1.5rem);
    height: clamp(1.25rem, 3vw, 1.5rem);
    color: var(--primary);
    flex-shrink: 0;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    letter-spacing: -0.025em;
    white-space: nowrap;
}

.logo.mini .logo-icon {
    width: 1rem;
    height: 1rem;
}

.logo.mini .logo-text {
    font-size: 0.875rem;
}

/* ========================================
   NAVEGACIÓN OPTIMIZADA PARA MÓVIL
======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: var(--z-sticky);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.95);
    border-bottom-color: var(--border);
}

[data-theme="dark"] .navbar.scrolled {
    background: rgba(15, 23, 42, 0.98);
}

.navbar-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    gap: var(--spacing-sm);
}

.navbar-logo {
    text-decoration: none;
    z-index: var(--z-sticky);
    flex-shrink: 0;
}

.navbar-menu {
    display: none;
    gap: var(--spacing-lg);
    flex-shrink: 1;
    overflow: hidden;
}

@media (min-width: 1025px) {
    .navbar-menu {
        display: flex;
    }
}

/* Ajuste para desktop - menos espacio entre nav links */
@media (min-width: 1025px) and (max-width: 1200px) {
    .navbar-menu {
        gap: var(--spacing-md);
    }
    
    .nav-link {
        font-size: 0.875rem;
        padding: var(--spacing-xs) 0;
    }
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: var(--transition);
    white-space: nowrap;
    font-size: 0.9rem;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

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

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

@media (min-width: 769px) {
    .navbar-actions {
        gap: var(--spacing-sm);
    }
}

.theme-toggle {
    background: none;
    border: none;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    min-height: 2.5rem;
    flex-shrink: 0;
}

.theme-toggle:hover,
.theme-toggle:focus {
    background: var(--surface-2);
    color: var(--primary);
}

.theme-icon {
    width: 1.25rem;
    height: 1.25rem;
}

.theme-icon.sun-icon {
    display: block;
}

.theme-icon.moon-icon {
    display: none;
}

[data-theme="dark"] .theme-icon.sun-icon {
    display: none;
}

[data-theme="dark"] .theme-icon.moon-icon {
    display: block;
}

/* Language Selector */
.language-selector {
    position: relative;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.language-toggle {
    background: none;
    border: 1px solid var(--border);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    min-height: 2.5rem;
    white-space: nowrap;
}

.language-toggle:hover,
.language-toggle:focus {
    border-color: var(--primary);
    color: var(--primary);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    min-width: 120px;
    z-index: var(--z-dropdown);
}

.language-selector.active .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-light);
    white-space: nowrap;
}

.language-option:last-child {
    border-bottom: none;
}

.language-option:hover,
.language-option:focus {
    background: var(--surface-2);
    color: var(--primary);
}

.language-option.active {
    color: var(--primary);
    font-weight: 500;
}

/* Mobile menu optimizado */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    background: none;
    border: none;
    padding: var(--spacing-sm);
    cursor: pointer;
    gap: 3px;
    min-width: 2.5rem;
    min-height: 2.5rem;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: var(--transition);
    flex-shrink: 0;
}

.mobile-menu-btn:hover,
.mobile-menu-btn:focus {
    background: var(--surface-2);
}

@media (min-width: 1025px) {
    .mobile-menu-btn {
        display: none;
    }
}

.hamburger-line {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 1px;
}

.mobile-menu-btn.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

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

.mobile-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--nav-height));
    overflow-y: auto;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-menu-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mobile-nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
    display: block;
    min-height: 44px;
    display: flex;
    align-items: center;
}

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

.mobile-menu-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

/* ========================================
   BUTTONS OPTIMIZADOS
======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    line-height: 1.25;
    white-space: nowrap;
    min-height: 44px;
    font-family: inherit;
    flex-shrink: 0;
}

.btn-icon {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border-color: var(--primary);
}

.btn-primary:hover,
.btn-primary:focus {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover,
.btn-outline:focus {
    background: var(--primary);
    color: var(--text-inverse);
}

.btn-outline.inverse {
    color: var(--text-inverse);
    border-color: var(--text-inverse);
}

.btn-outline.inverse:hover,
.btn-outline.inverse:focus {
    background: var(--text-inverse);
    color: var(--primary);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.btn-large .btn-icon {
    width: 1.25rem;
    height: 1.25rem;
}

@media (max-width: 768px) {
    .btn {
        font-size: 0.875rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .btn-large {
        font-size: 0.875rem;
        padding: var(--spacing-sm) var(--spacing-lg);
    }
}

/* ========================================
   SECTIONS & LAYOUT OPTIMIZADO
======================================== */

main {
    margin-top: var(--nav-height);
    min-height: calc(100vh - var(--nav-height));
}

.section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--surface-2);
    color: var(--primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.section-badge.inverse {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-inverse);
    border-color: rgba(255, 255, 255, 0.2);
}

.section-header h2 {
    font-family: var(--font-primary);
    font-size: clamp(1.75rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.section-header p {
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ========================================
   HERO SECTION OPTIMIZADA
======================================== */

.hero-section {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--primary-gradient);
    color: var(--text-inverse);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
}

.hero-grid {
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

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

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--section-padding) 0;
    width: 100%;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-inverse);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: clamp(0.75rem, 2vw, 0.875rem);
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.badge-icon {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

.hero-content h1 {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 8vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--spacing-xl);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl) auto;
    line-height: 1.6;
}

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

@media (max-width: 768px) {
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
        max-width: 400px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
        max-width: 300px;
    }
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-number {
    font-family: var(--font-primary);
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 800;
    color: var(--text-inverse);
    display: block;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: clamp(0.75rem, 2vw, 0.875rem);
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    line-height: 1.4;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-top: var(--spacing-2xl);
}

@media (max-width: 768px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}

/* ========================================
   RESPONSIVE GRID SYSTEMS
======================================== */

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-1 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-4,
    .grid-3,
    .grid-2 { 
        grid-template-columns: 1fr; 
        gap: var(--spacing-md);
    }
}

.grid-responsive {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

@media (max-width: 768px) {
    .grid-responsive {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

/* ========================================
   FEATURE CARDS Y COMPONENTES
======================================== */

.feature-card {
    background: var(--surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: var(--transition);
    box-shadow: var(--shadow-xs);
}

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

.feature-icon {
    width: 3rem;
    height: 3rem;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    margin-bottom: var(--spacing-lg);
}

.feature-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.feature-card h3 {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.feature-metric {
    padding: var(--spacing-md);
    background: var(--surface-2);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    text-align: center;
}

.metric-value {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    display: block;
    line-height: 1;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

/* ========================================
   SOLUTION SECTION
======================================== */

.solution-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

@media (max-width: 1024px) {
    .solution-showcase {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

.solution-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Phone mockup optimizado */
.solution-mockup {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
    position: sticky;
    top: calc(var(--nav-height) + 2rem);
}

.phone-mockup {
    position: relative;
    perspective: 1000px;
}

.phone-frame {
    width: min(280px, 80vw);
    height: min(560px, 70vh);
    background: linear-gradient(145deg, #f0f0f0, #ffffff);
    border-radius: 2rem;
    padding: 1rem;
    box-shadow: var(--shadow-xl);
    position: relative;
    transform: rotateY(-5deg) rotateX(5deg);
    transition: var(--transition);
}

@media (max-width: 768px) {
    .phone-frame {
        transform: none;
        width: min(320px, 90vw);
        height: min(600px, 80vh);
    }
}

.phone-frame:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

@media (max-width: 768px) {
    .phone-frame:hover {
        transform: none;
    }
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--surface);
    border-radius: 1.5rem;
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* Demo app components */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.user-avatar {
    width: 2rem;
    height: 2rem;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-weight: 600;
    font-size: 0.75rem;
}

.search-section {
    padding: var(--spacing-md);
    flex-shrink: 0;
}

.search-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
}

.search-bar:hover {
    border-color: var(--primary);
}

.search-icon {
    width: 1rem;
    height: 1rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

.search-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
    flex: 1;
    text-align: left;
}

.spaces-list {
    flex: 1;
    padding: 0 var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    overflow-y: auto;
    min-height: 0;
}

.space-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.space-item:hover,
.space-item.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.space-image {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.space-details {
    flex: 1;
    min-width: 0;
}

.space-details h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.space-price {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.space-status {
    font-size: 0.625rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    background: var(--surface-2);
    color: var(--text-muted);
    display: inline-block;
}

.space-status.available {
    background: var(--success);
    color: white;
}

.space-status.center {
    background: var(--warning);
    color: white;
}

.booking-btn {
    margin: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
    min-height: 44px;
}

.booking-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.booking-icon {
    width: 1rem;
    height: 1rem;
}

.demo-controls {
    text-align: center;
    max-width: 300px;
    width: 100%;
}

.demo-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

@media (max-width: 480px) {
    .demo-actions {
        grid-template-columns: 1fr;
    }
}

.demo-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface-2);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    min-height: 36px;
}

.demo-btn:hover {
    background: var(--primary);
    color: var(--text-inverse);
    border-color: var(--primary);
}

.demo-status {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
    line-height: 1.4;
}

/* ========================================
   BACK TO TOP OPTIMIZADO
======================================== */

.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 3rem;
    height: 3rem;
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(100px);
    transition: var(--transition);
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.back-to-top svg {
    width: 1.25rem;
    height: 1.25rem;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: var(--spacing-lg);
        right: var(--spacing-lg);
        width: 2.5rem;
        height: 2.5rem;
    }
    
    .back-to-top svg {
        width: 1rem;
        height: 1rem;
    }
}

/* ========================================
   ANIMATIONS OPTIMIZADAS
======================================== */

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

.animate-fade-up {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fade-up:nth-child(1) { animation-delay: 0.1s; }
.animate-fade-up:nth-child(2) { animation-delay: 0.2s; }
.animate-fade-up:nth-child(3) { animation-delay: 0.3s; }
.animate-fade-up:nth-child(4) { animation-delay: 0.4s; }
.animate-fade-up:nth-child(5) { animation-delay: 0.5s; }

.animate-on-scroll {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .hero-grid {
        animation: none;
    }
}

/* ========================================
   ACCESSIBILITY IMPROVEMENTS
======================================== */

/* Focus styles */
.focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.keyboard-navigation *:focus {
    outline: 2px solid var(--primary) !important;
    outline-offset: 2px !important;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border: #000000;
        --border-light: #333333;
        --text-muted: var(--text-secondary);
    }
}

/* ========================================
   PRINT STYLES
======================================== */

@media print {
    .navbar,
    .loading-screen,
    .mobile-menu,
    .theme-toggle,
    .language-selector,
    .back-to-top {
        display: none !important;
    }

    main {
        margin-top: 0 !important;
    }

    .hero-section {
        background: none !important;
        color: black !important;
        min-height: auto !important;
    }

    .section {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}

/* ========================================
   LOADING STATE IMPROVEMENTS
======================================== */

[data-loading="true"] {
    pointer-events: none;
    opacity: 0.7;
}

.skeleton {
    background: linear-gradient(90deg, var(--surface-2) 25%, var(--surface-3) 50%, var(--surface-2) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ========================================
   MOBILE SPECIFIC OPTIMIZATIONS
======================================== */

@media (max-width: 768px) {
    /* Prevent horizontal scroll */
    body {
        overflow-x: hidden;
    }
    
    /* Better touch targets */
    .btn, .mobile-nav-link, .nav-link, .demo-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Improve text readability */
    body {
        -webkit-text-size-adjust: 100%;
        -ms-text-size-adjust: 100%;
    }
    
    /* Prevent zoom on input focus */
    input, select, textarea {
        font-size: 16px !important;
    }
    
    /* Better focus states for mobile */
    .btn:focus, .mobile-nav-link:focus {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }
    
    /* Optimize scrolling */
    * {
        -webkit-overflow-scrolling: touch;
    }
    
    /* Fix viewport issues */
    .container {
        padding-left: max(var(--container-padding), env(safe-area-inset-left));
        padding-right: max(var(--container-padding), env(safe-area-inset-right));
    }
    
    /* Hero section mobile fixes */
    .hero-content {
        padding: calc(var(--nav-height) + 2rem) 0 2rem 0;
    }
    
    /* Navbar mobile fixes */
    .navbar-container {
        padding: 0 var(--spacing-sm);
        min-height: var(--nav-height);
    }
    
    .navbar-actions {
        gap: var(--spacing-xs);
    }
    
    /* Mobile menu improvements */
    .mobile-menu {
        max-height: calc(100vh - var(--nav-height));
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Phone mockup mobile adjustments */
    .solution-mockup {
        position: static;
    }
    
    .phone-frame {
        width: min(300px, 85vw);
        height: min(550px, 65vh);
    }
}

/* Extra small screens */
@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }
    
    .hero-content h1 {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }
    
    .section-header h2 {
        font-size: clamp(1.5rem, 6vw, 2rem);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .demo-actions {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
}