:root {
    --clr-bg-deep: #050b14;
    --clr-bg-alt: #0a111c;
    --clr-surface: #101a28;
    --clr-surface-glass: rgba(16, 26, 40, 0.6);
    --clr-border: rgba(255, 255, 255, 0.08);
    --clr-border-highlight: rgba(125, 211, 252, 0.3);
    --clr-text-main: #f8fafc;
    --clr-text-muted: #94a3b8;
    --clr-accent: #7dd3fc;
    --clr-accent-glow: rgba(125, 211, 252, 0.15);
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { background-color: var(--clr-bg-deep); color: var(--clr-text-main); font-family: var(--font-body); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: var(--transition-smooth); }
ul { list-style: none; }

h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; }
.section-label { font-family: var(--font-heading); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--clr-accent); display: block; margin-bottom: 1rem; }
.section-heading { font-size: 2.5rem; margin-bottom: 3rem; }

.container { width: 90%; max-width: 1200px; margin: 0 auto; }
.section-padding { padding: 8rem 0; }
.bg-alt { background-color: var(--clr-bg-alt); border-top: 1px solid var(--clr-border); border-bottom: 1px solid var(--clr-border); }
.grid { display: grid; gap: 2rem; }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* Logo & Nav */
#navbar { position: fixed; top: 0; width: 100%; z-index: 1000; transition: var(--transition-smooth); padding: 1rem 0; }
#navbar.scrolled { background: rgba(5, 11, 20, 0.95); backdrop-filter: blur(12px); border-bottom: 1px solid var(--clr-border); padding: 0.5rem 0; }
.nav-container { display: flex; justify-content: space-between; align-items: center; padding: 0 5%; max-width: 1400px; margin: 0 auto; }

.logo { display: flex; align-items: center; overflow: visible; }
.logo-img {
    height: 50px; /* Tamaño base más seguro */
    width: auto;
    display: block;
    transform: scale(2.2);
    transform-origin: left center;
    filter: invert(1) contrast(2.5) brightness(1.3);
    mix-blend-mode: screen;
}

.nav-links { display: flex; gap: 2.5rem; }
.nav-links a { font-size: 0.9rem; font-weight: 500; color: var(--clr-text-muted); }
.nav-links a:hover { color: var(--clr-text-main); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 1rem 2rem; font-family: var(--font-heading); font-size: 0.95rem; font-weight: 600; border-radius: 2px; cursor: pointer; border: none; }
.btn-small { padding: 0.6rem 1.2rem; font-size: 0.85rem; }
.btn-primary { background: var(--clr-text-main); color: var(--clr-bg-deep); }
.btn-primary:hover { background: var(--clr-accent); color: var(--clr-bg-deep); box-shadow: 0 0 20px var(--clr-accent-glow); }
.btn-outline { background: transparent; color: var(--clr-text-main); border: 1px solid var(--clr-border); }

/* Hero */
.hero-section { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; overflow: hidden; padding-top: 80px; }
#hero-canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0.4; pointer-events: none; }
.hero-content { position: relative; z-index: 1; max-width: 900px; padding: 2rem; }
.hero-badge { display: inline-block; padding: 0.5rem 1.2rem; background: var(--clr-surface-glass); border: 1px solid var(--clr-border); backdrop-filter: blur(10px); border-radius: 100px; font-size: 0.8rem; color: var(--clr-accent); margin-bottom: 2rem; }
.hero-title { font-size: clamp(2.2rem, 8vw, 5rem); margin-bottom: 1.5rem; line-height: 1.2; }
.hero-subtitle { font-size: 1.1rem; color: var(--clr-text-muted); max-width: 700px; margin: 0 auto 3rem auto; }
.hero-ctas { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* Sections */
.brand-strip { background: var(--clr-text-main); color: var(--clr-bg-deep); padding: 4rem 2rem; text-align: center; }
.strip-title { font-size: clamp(1rem, 4vw, 1.5rem); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.5rem; }
.divider { color: #cbd5e1; margin: 0 0.5rem; }
.strip-microcopy { font-family: var(--font-heading); font-size: 0.85rem; font-weight: 600; opacity: 0.7; }

.card { background: var(--clr-surface); border: 1px solid var(--clr-border); padding: 2.5rem 2rem; }
.card-number { font-family: var(--font-heading); font-size: 0.9rem; color: var(--clr-accent); margin-bottom: 1.5rem; border-bottom: 1px solid var(--clr-border); padding-bottom: 0.5rem; }

.system-block { border: 1px solid var(--clr-border); background: var(--clr-surface); padding: 2.5rem; margin-bottom: 1rem; }
.list-item { padding: 1.5rem 0; border-bottom: 1px solid var(--clr-border); display: flex; align-items: center; }
.list-item::before { content: "■"; color: var(--clr-accent); font-size: 0.5rem; margin-right: 1rem; }

/* Footer */
footer { border-top: 1px solid var(--clr-border); padding: 4rem 0; }
.footer-container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 2rem; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(20px); transition: all 0.6s ease-out; }
.reveal.active { opacity: 1; transform: translateY(0); }

/* --- AJUSTES ESPECÍFICOS PARA MÓVIL --- */
@media (max-width: 768px) {
    #navbar { 
        padding: 0.5rem 0; 
        background: rgba(5, 11, 20, 0.95); /* Fondo oscuro constante para proteger la visibilidad */
    }
    
    .nav-container {
        padding: 0 1.5rem; /* Asegura un pequeño margen a los lados */
    }

    .logo-img {
        height: 48px; /* Tu altura exacta solicitada */
        transform: scale(1.8); /* Escala balanceada para que el aire del logo no desborde */
    }

    .nav-links { display: none; }

    .hero-section {
        /* Redujimos el espacio a la mitad para que el contenido empiece más arriba */
        padding-top: 60px; 
        min-height: auto; /* Evita que la pantalla se estire innecesariamente */
        padding-bottom: 4rem; /* Añade espacio abajo para equilibrar */
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1rem; /* Texto un poco más legible en celular */
        padding: 0 1rem;
    }

    .hero-ctas {
        flex-direction: column;
        width: 100%;
        padding: 0 1rem;
    }

    .hero-ctas .btn {
        width: 100%;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}