/* RESET GENERAL */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

body {
    background-color: #121212; /* Negro mate dominante */
    color: #E0E0E0; /* Gris claro para lectura limpia */
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* HERO SECTION */
.hero {
    background: linear-gradient(180deg, #1a1a1a 0%, #121212 100%);
    text-align: center;
    padding: 100px 0 60px 0;
    border-bottom: 1px solid #2a2a2a;
}

.badge {
    display: inline-block;
    background-color: #2a2a2a;
    color: #a8ffb2; /* Verde sutil de validación */
    padding: 6px 16px;
    font-size: 0.8rem;
    font-weight: bold;
    border-radius: 20px;
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.hero h1 {
    font-size: 2.8rem;
    color: #FFFFFF;
    margin-bottom: 16px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.hero p {
    font-size: 1.2rem;
    color: #A0A0A0;
    max-width: 700px;
    margin: 0 auto 40px auto;
}

/* FORMULARIO CTA */
.cta-form {
    display: flex;
    justify-content: center;
    gap: 12px;
    max-width: 550px;
    margin: 0 auto;
}

.cta-form input[type="email"] {
    flex: 1;
    padding: 16px;
    background-color: #1a1a1a;
    border: 1px solid #333333;
    border-radius: 6px;
    color: #FFFFFF;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.cta-form input[type="email"]:focus {
    border-color: #FFFFFF;
}

.btn-primary {
    background-color: #FFFFFF; /* Botón contraste puro */
    color: #121212;
    border: none;
    padding: 16px 28px;
    font-size: 1rem;
    font-weight: bold;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: #E0E0E0;
}

/* SECCIÓN CARACTERÍSTICAS / PILARES */
.features {
    padding: 80px 0;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    color: #FFFFFF;
    margin-bottom: 48px;
}

.grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

@media (min-width: 768px) {
    .grid {
        flex-direction: row;
    }
}

.card {
    flex: 1;
    background-color: #1a1a1a;
    border: 1px solid #2a2a2a;
    padding: 32px;
    border-radius: 8px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.card:hover {
    border-color: #444444;
}

.card h3 {
    color: #FFFFFF;
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.card p {
    color: #999999;
    font-size: 0.95rem;
}

/* CLASES AUXILIARES JS */
.message-hidden { display: none; }