/* ================================
   VARIABLES PROFESIONALES
   ================================ */
:root {
    /* Colores Principales */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;
    
    /* Colores Secundarios */
    --secondary-500: #8b5cf6;
    --secondary-600: #7c3aed;
    
    /* Colores de Acento */
    --accent-500: #ec4899;
    --accent-600: #db2777;
    
    /* Escala de Grises */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Fondos */
    --bg-primary: #0a0f1e;
    --bg-secondary: #0f172a;
    --bg-card: #1e293b;
    --bg-elevated: #334155;
    
    /* Textos */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    
    /* Sombras Profesionales */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.25);
    
    /* Espaciado Profesional */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Radios */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transiciones */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    width: 100%;
    position: relative;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ================================
   NAVIGATION
   ================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 15, 30, 0.8);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    transition: background var(--transition-base),
                box-shadow var(--transition-base);
    will-change: background;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.navbar.scrolled {
    background: rgba(10, 15, 30, 0.95);
    box-shadow: var(--shadow-lg);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.brand:hover {
    transform: translateY(-2px);
}

.brand-logo {
    width: 40px;
    height: 40px;
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.4));
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--primary-400), var(--secondary-500));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-tagline {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-item {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-item:hover {
    color: var(--primary-400);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
    transition: width var(--transition-base);
}

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    z-index: 1001;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    display: block;
}

/* Animación hamburguesa → X */
.mobile-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    width: 100%;
    background: rgba(10, 15, 30, 0.98);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(99, 102, 241, 0.2);
    padding: var(--space-6);
    z-index: 999;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity var(--transition-base),
                transform var(--transition-base),
                visibility var(--transition-base);
    pointer-events: none;
}

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

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.mobile-item {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 500;
    padding: var(--space-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    display: block;
}

.mobile-item:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-400);
}

/* ================================
   HERO SECTION
   ================================ */
.hero-pro {
    position: relative;
    padding: 140px 0 80px 0;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(99, 102, 241, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black 40%, transparent 100%);
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(99, 102, 241, 0.15), transparent);
}

.hero-content-wrapper {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    color: var(--primary-300);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-8);
}

.badge-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    color: var(--text-primary);
}

.gradient-text {
    display: block;
    background: linear-gradient(135deg, var(--primary-400), var(--secondary-500), var(--accent-500));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-10);
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-16);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-icon {
    width: 18px;
    height: 18px;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    max-width: 700px;
    margin: 0 auto;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-400), var(--accent-500));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

/* ================================
   APPS SECTION
   ================================ */
.apps-showcase {
    padding: var(--space-20) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-tag {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    color: var(--primary-300);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--space-4);
    color: var(--text-primary);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.apps-grid-pro {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(350px, 100%), 1fr));
    gap: var(--space-8);
}

.app-card {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform var(--transition-slow),
                box-shadow var(--transition-slow),
                border-color var(--transition-slow);
    position: relative;
    cursor: pointer;
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500), var(--accent-500));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.app-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    border-color: rgba(99, 102, 241, 0.3);
}

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

.app-preview {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.app-content {
    padding: var(--space-6);
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--space-4);
    gap: var(--space-3);
}

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.app-badge {
    padding: var(--space-1) var(--space-3);
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    color: white;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
    flex-shrink: 0;
}

.app-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-5);
}

.app-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
}

.app-tag {
    padding: var(--space-1) var(--space-3);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    color: var(--primary-300);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 500;
}

.app-footer {
    padding-top: var(--space-4);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.app-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    width: 100%;
    padding: var(--space-3) var(--space-6);
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    color: white;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: transform var(--transition-base),
                box-shadow var(--transition-base);
}

.app-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.4);
}

.app-link svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* ================================
   ABOUT SECTION
   ================================ */
.about-pro {
    padding: var(--space-20) 0;
    background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.03), transparent);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-16);
    align-items: center;
}

.about-visual {
    position: relative;
}

.visual-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    text-align: center;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    position: relative;
    transition: all 0.5s ease;
    overflow: hidden;
}

.visual-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.03),
        transparent
    );
    transform: rotate(45deg);
    transition: all 0.5s ease;
}

.visual-card:hover::after {
    animation: shine 1.5s ease-in-out infinite;
}

.visual-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
    position: relative;
}

.rotating-icon::before {
    content: '';
    position: absolute;
    inset: -10px;
    background: conic-gradient(
        from 0deg,
        transparent,
        var(--primary-500),
        transparent
    );
    border-radius: var(--radius-2xl);
    opacity: 0;
    transition: opacity 0.5s ease;
    animation: rotateIcon 3s linear infinite;
}

.floating-card:hover .rotating-icon::before {
    opacity: 0.3;
}

.visual-icon svg {
    width: 40px;
    height: 40px;
    color: white;
    position: relative;
    z-index: 1;
}

.visual-card h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.visual-card p {
    color: var(--text-secondary);
}

.about-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--space-6);
    color: var(--text-primary);
    line-height: 1.2;
}

.about-text {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-4);
}

.about-text strong {
    color: var(--primary-400);
    font-weight: 700;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin: var(--space-8) 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-secondary);
    font-weight: 500;
}

.feature-icon {
    width: 24px;
    height: 24px;
    color: var(--primary-400);
    flex-shrink: 0;
}

.creatigraf-badge {
    display: inline-block;
    text-decoration: none;
    margin-top: var(--space-6);
}

.badge-content {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5) var(--space-8);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-xl);
    transition: transform var(--transition-slow),
                border-color var(--transition-slow),
                box-shadow var(--transition-slow);
}

.creatigraf-badge:hover .badge-content {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.5);
    box-shadow: 0 12px 24px rgba(99, 102, 241, 0.2);
}

.creatigraf-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-500);
    flex-shrink: 0;
}

.badge-text-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.badge-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.badge-name {
    font-size: 1.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-400), var(--accent-500));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.arrow-icon {
    width: 20px;
    height: 20px;
    color: var(--primary-400);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.creatigraf-badge:hover .arrow-icon {
    transform: translateX(4px);
}

/* ================================
   FOOTER
   ================================ */
.footer-pro {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--space-16);
    margin-bottom: var(--space-12);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.footer-logo {
    width: 36px;
    height: 36px;
    opacity: 0.8;
}

.footer-brand-name {
    font-size: 1.25rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-400), var(--secondary-500));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-description {
    color: var(--text-tertiary);
    line-height: 1.6;
}

.footer-links-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-12);
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--primary-400);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-copy p {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.footer-credits {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.heart-icon {
    width: 16px;
    height: 16px;
    color: var(--accent-500);
    animation: heartbeat 1.5s ease-in-out infinite;
    flex-shrink: 0;
}

.footer-creatigraf {
    color: var(--primary-400);
    text-decoration: none;
    font-weight: 700;
    transition: color var(--transition-fast);
}

.footer-creatigraf:hover {
    color: var(--accent-500);
}

/* ================================
   SCROLL TO TOP
   ================================ */
.scroll-top {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    border: none;
    border-radius: var(--radius-full);
    color: white;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base),
                visibility var(--transition-base),
                transform var(--transition-base),
                box-shadow var(--transition-base);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    will-change: transform;
}

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

.scroll-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.scroll-top svg {
    width: 24px;
    height: 24px;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes gradientShift {
    0%   { background-position: 0% 50%;   }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%;   }
}

@keyframes floating {
    0%, 100% { transform: translateY(0px);   }
    50%       { transform: translateY(-20px); }
}

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

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

@keyframes floatParticle {
    0% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0;
    }
    10%  { opacity: 1; }
    90%  { opacity: 1; }
    100% {
        transform: translate(var(--tx), var(--ty)) rotate(360deg);
        opacity: 0;
    }
}

@keyframes heartbeat {
    0%, 100%  { transform: scale(1);   }
    10%, 30%  { transform: scale(1.1); }
    20%, 40%  { transform: scale(1);   }
}

@keyframes shine {
    0%   { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%)  translateY(100%)  rotate(45deg); }
}

/* ================================
   CLASES DE ANIMACIÓN
   ================================ */
.animate-fade-in {
    animation: fadeIn 0.8s ease-out;
}

.animate-fade-in-delay {
    animation: fadeIn 0.8s ease-out 0.2s backwards;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 0.8s ease-out 0.4s backwards;
}

.animate-slide-up {
    animation: slideUp 1s ease-out;
}

.animate-scale-in {
    animation: scaleIn 0.6s ease-out backwards;
}

.animated-gradient {
    background: linear-gradient(135deg,
        var(--primary-400),
        var(--secondary-500),
        var(--accent-500),
        var(--primary-400)
    );
    background-size: 300% 300%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 3s ease infinite;
}

.app-card {
    animation: fadeInUp 0.6s ease-out backwards;
}

.app-card:nth-child(1) { animation-delay: 0.1s; }
.app-card:nth-child(2) { animation-delay: 0.2s; }
.app-card:nth-child(3) { animation-delay: 0.3s; }
.app-card:nth-child(4) { animation-delay: 0.4s; }
.app-card:nth-child(5) { animation-delay: 0.5s; }
.app-card:nth-child(6) { animation-delay: 0.6s; }

/* ================================
   TARJETA FLOTANTE
   ================================ */
.floating-card {
    animation: floating 3s ease-in-out infinite;
    position: relative;
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.floating-card:hover {
    animation-play-state: paused;
}

.pulse-text {
    animation: pulse 2s ease-in-out infinite;
}

/* ================================
   PARTÍCULAS
   ================================ */
.particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    border-radius: var(--radius-2xl);
}

.particle {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    opacity: 0;
    animation: floatParticle 4s ease-in-out infinite;
}

.particle-1 {
    left: 20%;
    top: 20%;
    --tx: 100px;
    --ty: -100px;
    animation-delay: 0s;
    background: var(--primary-400);
}

.particle-2 {
    right: 20%;
    top: 30%;
    --tx: -80px;
    --ty: -120px;
    animation-delay: 1s;
    background: var(--secondary-500);
}

.particle-3 {
    left: 30%;
    bottom: 30%;
    --tx: 120px;
    --ty: 80px;
    animation-delay: 2s;
    background: var(--accent-500);
}

.particle-4 {
    right: 30%;
    bottom: 20%;
    --tx: -90px;
    --ty: 100px;
    animation-delay: 3s;
    background: var(--primary-300);
}

.stat-icon {
    width: 40px;
    height: 40px;
    display: inline-block;
    animation: pulse 2s ease-in-out infinite;
}

/* ================================
   RESPONSIVE — 1024px
   ================================ */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-5);
    }

    .apps-grid-pro {
        grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
        gap: var(--space-6);
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
}

/* ================================
   RESPONSIVE — 768px
   ================================ */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .mobile-menu {
        top: 72px;
    }

    .hero-pro {
        padding: 100px 0 60px 0;
    }

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

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-4);
        max-width: 100%;
    }

    .apps-grid-pro {
        grid-template-columns: 1fr;
    }

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

    .floating-card {
        animation: floating 4s ease-in-out infinite;
    }

    .particles {
        display: none;
    }

    .footer-links-section {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }

    .footer-credits {
        justify-content: center;
        flex-wrap: wrap;
    }

    .scroll-top {
        bottom: var(--space-6);
        right: var(--space-6);
        width: 44px;
        height: 44px;
    }
}

/* ================================
   RESPONSIVE — 480px
   ================================ */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }

    .nav-wrapper {
        height: 64px;
    }

    .mobile-menu {
        top: 64px;
    }

    .brand-logo {
        width: 32px;
        height: 32px;
    }

    .brand-name {
        font-size: 1.125rem;
    }

    .hero-pro {
        padding: 90px 0 50px 0;
    }

    .hero-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-stats {
        gap: var(--space-2);
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .stat-label {
        font-size: 0.7rem;
    }

    .badge-content {
        padding: var(--space-4) var(--space-5);
        gap: var(--space-3);
    }

    .badge-name {
        font-size: 1.25rem;
    }

    .footer-links-section {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
}

/* ================================
   MOTION REDUCE
   ================================ */
@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;
    }
}