/* =========================
   VARIABLES (SaaS High-Contrast)
========================= */
:root {
    --bg-main: #020617; /* Fondo ultra oscuro profundo */
    --bg-card: #0f172a; /* Azul marino para las cajas */
    --bg-soft: #1e293b; /* Secciones secundarias */
    --text-main: #ffffff; /* Blanco puro para títulos */
    --text-muted: #94a3b8; /* Gris azulado para párrafos */
    --primary: #38bdf8; /* Celeste eléctrico (Tech) */
    --primary-soft: #7dd3fc; /* Celeste suave para acentos */
    --whatsapp: #22c55e; /* Verde vibrante para CTA */
    --radius: 1.25rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================
   RESET & BASE
========================= */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* =========================
   TIPOGRAFÍA (Legibilidad Máxima)
========================= */
h1, h2, h3 {
    margin-top: 0;
    line-height: 1.1;
}

/* Títulos con degradado para que se vean sí o sí */
h2 {
    color: var(--primary);
    font-size: clamp(2rem, 5vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 2rem;
    text-align: center;
}

h3 {
    color: var(--primary-soft);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* =========================
   HEADER HERO (Corregido)
========================= */
header {
    padding: clamp(5rem, 15vh, 10rem) 1.5rem;
    text-align: center;
    position: relative;
    /* Gradiente para asegurar que el texto blanco resalte sobre cualquier imagen */
    background: linear-gradient(rgba(2, 6, 23, 0.85), rgba(2, 6, 23, 0.85)), url("imagenInicio.png");
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

    header h1 {
        font-size: clamp(2.5rem, 7vw, 4rem);
        font-weight: 900;
        color: #ffffff; /* Aseguramos blanco puro */
        max-width: 900px;
        margin: 0 auto 1.5rem;
        letter-spacing: -0.03em;
    }

    header p {
        font-size: clamp(1.1rem, 2vw, 1.3rem);
        color: var(--text-muted);
        max-width: 700px;
        margin: 0 auto;
        opacity: 1; /* Quitamos la opacidad baja para que se vea bien */
    }

.header-offer {
    margin-top: 2rem;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* =========================
   SECCIONES & CONTENEDORES
========================= */
section {
    padding: 6rem 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

/* =========================
   CARDS GRID (Modern SaaS)
========================= */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    transition: var(--transition);
}

    .card:hover {
        transform: translateY(-10px);
        border-color: var(--primary);
        box-shadow: 0 25px 50px rgba(56, 189, 248, 0.15);
    }

    .card ul {
        list-style: none;
        padding: 0;
        color: var(--text-muted);
    }

    .card li {
        margin-bottom: 1rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

        /* Checkmark para las listas */
        .card li::before {
            content: "✓";
            color: var(--primary);
            font-weight: bold;
        }

/* =========================
   VIDEO (Aspecto Premium)
========================= */
.video-container {
    margin-top: 4rem;
    background: #000;
    padding: 10px;
    border-radius: 2rem;
    box-shadow: 0 0 40px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.1);
}

    .video-container video {
        width: 100%;
        height: auto;
        display: block;
        border-radius: 1.5rem;
        aspect-ratio: 16 / 9;
        object-fit: cover;
    }

/* =========================
   CTA FINAL
========================= */
.cta {
    background: linear-gradient(145deg, var(--bg-card), var(--bg-soft));
    padding: 5rem 2rem;
    text-align: center;
    border-radius: 2rem;
    margin: 4rem 1.5rem;
    border: 1px solid rgba(255,255,255,0.05);
}

/* =========================
   WHATSAPP BUTTONS (Llamativos)
========================= */
.whatsapp {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 2.5rem;
}

    .whatsapp a {
        text-decoration: none;
        background: var(--whatsapp);
        color: #020617; /* Texto oscuro sobre fondo claro para legibilidad */
        padding: 1.2rem 2.5rem;
        font-size: 1.1rem;
        font-weight: 800;
        border-radius: 999px;
        display: flex;
        align-items: center;
        gap: 0.8rem;
        box-shadow: 0 10px 25px rgba(34, 197, 94, 0.4);
        transition: var(--transition);
    }

        .whatsapp a:hover {
            transform: translateY(-4px) scale(1.05);
            box-shadow: 0 15px 35px rgba(34, 197, 94, 0.6);
            filter: brightness(1.1);
        }

.wa-logo {
    width: 24px;
    height: 24px;
}

/* =========================
   FOOTER
========================= */
footer {
    text-align: center;
    padding: 4rem 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* =========================
   ANIMACIONES SCROLL
========================= */
.reveal, .reveal-card, .reveal-video {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}

    .reveal.show, .reveal-card.show, .reveal-video.show {
        opacity: 1;
        transform: translateY(0);
    }