/* Estilos globales y reset básico */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f6f9;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

/* Contenedor principal responsivo */
.card {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    max-width: 480px;
    width: 100%;
    padding: 40px 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
}

/* Logo responsivo */
.logo {
    max-width: 160px;
    height: auto;
    margin-bottom: 24px;
}

/* Tipografía */
h1 {
    font-size: 1.75rem;
    color: #1a252f;
    margin-bottom: 12px;
    line-height: 1.3;
}

p {
    font-size: 1rem;
    color: #666;
    margin-bottom: 28px;
    line-height: 1.5;
}

/* Botón de acción */
.btn {
    display: inline-block;
    width: 100%;
    background-color: #2563eb;
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    padding: 14px 24px;
    border-radius: 8px;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    background-color: #1d4ed8;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Ajustes para pantallas pequeñas */
@media (max-width: 480px) {
    .card {
        padding: 30px 20px;
    }

    h1 {
        font-size: 1.4rem;
    }

    p {
        font-size: 0.95rem;
    }
}