/* ====================================
   1. VARIABLES Y RESET PROFESIONAL
   ==================================== */
:root {
    /* Paleta de Colores Moderna */
    --color-primary: #0077ff;       /* Azul Enérgico */
    --color-secondary: #00bcd4;     /* Cian Vivo */
    --color-accent-pink: #ff0077;   /* Pink para acentos sutiles */
    
    --color-text-dark: #1e293b;     /* Azul Oscuro (casi negro) */
    --color-text-light: #ffffff;
    --color-background-light: #f8fafc; /* Fondo muy claro, casi blanco */
    --color-background-dark: #0f172a;  /* Fondo oscuro para seguridad/footer */
    
    /* Gradientes */
    --gradient-primary: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-hover: linear-gradient(90deg, #0099ff 0%, #00e0ff 100%);
    
    /* Glassmorphism Riguroso */
    --color-glass-bg: rgba(255, 255, 255, 0.2); 
    --blur-intensity: 18px; /* Más intenso y profesional */
    --border-glass: 1px solid rgba(255, 255, 255, 0.4);
    
    /* Estilos Generales */
    --border-radius-lg: 24px;
    --border-radius-sm: 12px;
    --shadow-subtle: 0 4px 15px rgba(0, 0, 0, 0.05);
    --shadow-glass: 0 10px 40px 0 rgba(0, 0, 0, 0.1); /* Sombra más pronunciada */
    
    /* Transiciones */
    --transition-fast: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Reset y Tipografía */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.7; /* Ligeramente más espaciado para mejor legibilidad */
    color: var(--color-text-dark);
    background-color: var(--color-background-light);
    overflow-x: hidden;
    scroll-behavior: smooth;
    text-rendering: optimizeLegibility;
}

h1, h2, h3 {
    font-weight: 800; /* Más peso para impacto */
    color: var(--color-text-dark);
}

p {
    color: #4b5563;
}

/* --------------------
    UTILIDADES
   -------------------- */
.section-padding {
    padding: 120px 5%; /* Más aire */
    max-width: 1400px; /* Ancho máximo para no saturar */
    margin: 0 auto;
}

.tagline {
    text-align: center;
    color: var(--color-primary);
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.section-description {
    max-width: 800px;
    margin: 20px auto 60px auto;
    text-align: center;
    font-size: 1.15em;
    color: #64748b;
}

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

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


/* ====================================
   2. CABECERA/NAVBAR (GLASSMORPHIC STICKY)
   ==================================== */
#navbar {
    position: sticky; /* Sticky para mejor rendimiento de algunas apps */
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 5%;
    /* Aplicación de Glassmorphism */
    background-color: var(--color-glass-bg);
    backdrop-filter: blur(var(--blur-intensity));
    -webkit-backdrop-filter: blur(var(--blur-intensity));
    z-index: 1000;
    border-bottom: var(--border-glass);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition-fast);
}

/* Efecto al hacer scroll (implementado en JS y en CSS para fallback) */
.scrolled {
    background-color: rgba(255, 255, 255, 0.95) !important;
    box-shadow: var(--shadow-glass) !important;
    border-bottom: none !important;
}

.logo {
    font-size: 1.9em;
    font-weight: 800;
    color: var(--color-text-dark);
    display: flex;
    align-items: center;
    letter-spacing: -0.5px;
}

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

.logo-img {
    width: 50px; /* Ligeramente más pequeño, más elegante */
    height: 50px;
    margin-right: 12px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-subtle);
}

#navbar a {
    color: var(--color-text-dark);
    text-decoration: none;
    margin-left: 35px;
    font-weight: 500;
    transition: color 0.3s, transform 0.3s;
    position: relative;
}

/* Indicador de hover más profesional */
#navbar a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    background-color: var(--color-primary);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    transition: width 0.3s ease-out;
    border-radius: 2px;
}

#navbar a:hover::after {
    width: 100%;
}

#beta-btn {
    background: var(--gradient-primary);
    color: var(--color-text-light);
    border: none;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    margin-left: 35px;
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.3);
    transition: var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#beta-btn:hover {
    background: var(--gradient-hover);
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 10px 30px rgba(0, 123, 255, 0.5);
}

/* ====================================
   3. SECCIÓN PRINCIPAL (HERO) - Efecto Ola
   ==================================== */
.hero {
    min-height: 95vh; /* Ajuste para que la navbar se sienta mejor */
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 180px; /* Más espacio para la navbar */
    background: linear-gradient(135deg, #e0eaf4 0%, var(--color-background-light) 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 50%;
    z-index: 2;
    animation: fadeInSlideRight 1s ease-out;
}

.hero h1 {
    font-size: 4.8em; /* Titular más grande y llamativo */
    line-height: 1.05;
    margin-bottom: 20px;
}

.hero .highlight {
    /* Efecto de degradado al texto */
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .subtitle {
    font-size: 1.6em;
    color: #475569;
    font-weight: 300;
    margin-bottom: 50px;
}

.cta-group {
    display: flex;
    align-items: center;
    gap: 30px;
}

.cta-btn {
    padding: 16px 40px; /* Botones más robustos */
    border-radius: 50px;
    font-size: 1.15em;
    transition: var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cta-btn.primary {
    background: var(--gradient-primary);
    color: var(--color-text-light);
    box-shadow: 0 12px 35px rgba(0, 123, 255, 0.35);
}

.cta-btn.primary:hover {
    background: var(--gradient-hover);
    transform: translateY(-7px) scale(1.01);
    box-shadow: 0 20px 50px rgba(0, 123, 255, 0.5);
}

.cta-link.beta-link {
    /* Estilo de enlace más limpio */
    color: var(--color-text-dark);
    font-weight: 500;
    font-size: 1.05em;
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 2px;
    position: static; /* Removido el posicionamiento absoluto */
}

.cta-link.beta-link:hover {
    color: var(--color-primary);
    text-decoration: none;
    opacity: 0.8;
}

/* Contenedor de la Imagen: Más sofisticado */
.hero-image {
    position: relative;
    width: 45%;
    max-width: 650px;
    z-index: 1;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    /* Efecto Glassmorphism sutil para el contenedor */
    background-color: var(--color-glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: var(--border-glass);
    box-shadow: var(--shadow-glass), 0 0 40px rgba(0, 123, 255, 0.1); /* Sombra con un toque azul */
    animation: floatImage 8s ease-in-out infinite, fadeInScale 1s ease-out 0.5s forwards;
    transform: scale(0.9);
    opacity: 0;
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Animaciones */
@keyframes floatImage {
    0% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0); }
}

@keyframes fadeInSlideRight {
    0% { opacity: 0; transform: translateX(-50px); }
    100% { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInScale {
    0% { opacity: 0; transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1); }
}

/* ====================================
   4. SECCIÓN DE SEGURIDAD (OSCURO)
   ==================================== */
.security-section {
    background-color: var(--color-background-dark);
    color: var(--color-text-light);
    text-align: center;
    /* Fondo con gradiente sutil */
    background-image: radial-gradient(circle at top left, #1f3044 0%, var(--color-background-dark) 60%);
}

.security-section h2 {
    color: var(--color-secondary);
    font-size: 3.2em;
}

.security-section p {
    color: #94a3b8;
}

.security-features {
    display: flex;
    justify-content: center; 
    gap: 50px; /* Más separación */
    margin-top: 50px;
}

.security-card {
    /* Glassmorphism oscuro y elegante */
    background-color: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(var(--blur-intensity));
    -webkit-backdrop-filter: blur(var(--blur-intensity));
    padding: 40px;
    border-radius: var(--border-radius-lg);
    max-width: 400px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6);
    transition: var(--transition-fast);
}

.security-card:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 25px var(--color-secondary); /* Efecto glow sutil */
}

.secure-logo {
    width: 130px; 
    height: 130px;
    margin-bottom: 25px;
}

.secure-screen {
    width: 100%;
    height: 280px; 
    object-fit: cover;
    border-radius: var(--border-radius-sm);
    margin-bottom: 25px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.security-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
    font-weight: 700;
}


/* ====================================
   5. GRID DE CARACTERÍSTICAS (Didáctico)
   ==================================== */
.layers-section {
    text-align: center;
    background-color: #f0f4f8; /* Un fondo ligeramente azulado */
}

.layers-section h2 {
    font-size: 3.2em;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.feature-card {
    position: relative;
    /* Aplicación de Glassmorphism */
    background-color: var(--color-glass-bg);
    backdrop-filter: blur(var(--blur-intensity));
    -webkit-backdrop-filter: blur(var(--blur-intensity));
    padding: 30px;
    border-radius: var(--border-radius-lg);
    text-align: left;
    border: var(--border-glass);
    box-shadow: var(--shadow-glass);
    transition: var(--transition-fast);
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px 0 rgba(0, 0, 0, 0.15);
    border-color: var(--color-primary); /* Borde de color */
}

/* Indicador de Capa (Didáctico) */
.feature-card::before {
    content: attr(data-layer);
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: 8px 20px;
    border-bottom-left-radius: var(--border-radius-lg);
    font-weight: 700;
    font-size: 0.85em;
    z-index: 10;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);
}

.feature-card img {
    width: 100%;
    height: 220px; 
    object-fit: cover;
    border-radius: var(--border-radius-sm);
    margin-bottom: 25px;
    box-shadow: var(--shadow-subtle);
}

.feature-card h3 {
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-text-dark);
    font-size: 1.5em;
}

/* ====================================
   6. SECCIÓN DE DISEÑO (FLUIDEZ)
   ==================================== */
.design-section {
    background: linear-gradient(to bottom, #ffffff, #f0f7ff); /* Gradiente suave */
    display: flex;
    align-items: center;
    gap: 80px;
}

.design-content {
    max-width: 50%;
    animation: fadeInSlideLeft 1s ease-out;
}

@keyframes fadeInSlideLeft {
    0% { opacity: 0; transform: translateX(50px); }
    100% { opacity: 1; transform: translateX(0); }
}

.design-content h2 {
    font-size: 3.2em;
    margin-bottom: 20px;
    line-height: 1.2;
}

.design-list {
    list-style: none;
    padding-left: 0;
    margin-top: 35px;
    border: 1px solid #e2e8f0;
    border-radius: var(--border-radius-lg);
    padding: 20px;
    background-color: var(--color-glass-bg);
    backdrop-filter: blur(5px);
}

.design-list li {
    padding: 15px 0;
    border-bottom: 1px solid #e2e8f0;
    font-weight: 500;
    display: flex;
    align-items: center;
}

.design-list li:last-child {
    border-bottom: none;
}

.design-list li .icon {
    font-size: 1.2em;
    margin-right: 15px;
    color: var(--color-primary);
    text-shadow: 0 0 5px rgba(0, 123, 255, 0.3);
}

.design-image {
    width: 45%;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    border: 2px solid #fff;
    transition: transform 0.5s;
}

.design-image:hover {
    transform: scale(1.02) rotate(1deg);
}

.design-image img {
    width: 100%;
    display: block;
    object-fit: cover;
}

/* ====================================
   7. PIE DE PÁGINA
   ==================================== */
footer {
    background-color: var(--color-background-dark);
    color: #94a3b8;
    padding: 50px 5%;
    font-size: 0.9em;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.copyright {
    letter-spacing: 0.5px;
}

.social-links a {
    color: #94a3b8;
    font-weight: 400;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

/* ====================================
   8. MEDIA QUERIES (RESPONSIVE)
   ==================================== */
@media (max-width: 1200px) {
    .hero h1 {
        font-size: 4em;
    }
    .hero .subtitle {
        font-size: 1.4em;
    }
}

@media (max-width: 1000px) {
    .hero-content {
        max-width: 100%;
    }
    .hero-image {
        display: none; 
    }
    .hero {
        text-align: center;
        padding-top: 120px;
        min-height: 70vh;
    }
    .cta-group {
        justify-content: center;
    }
    .design-section {
        flex-direction: column;
    }
    .design-content, .design-image {
        max-width: 100%;
        width: 100%;
    }
    .design-section {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 3em;
    }
    .hero .subtitle {
        font-size: 1.1em;
    }
    .cta-group {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }
    
    #navbar nav {
        display: none; 
    }
    .security-features {
        flex-direction: column;
        align-items: center;
    }
    .security-card {
        max-width: 100%;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    .social-links {
        margin-top: 20px;
    }
}