body {
    background: linear-gradient(to bottom, rgba(11, 19, 43, 0.3), rgba(11, 19, 43, 0.3)), url('../images/fondo.jpg');
    background-size: cover;
    background-position: center;
    min-height: 100vh;
    color: #ffffff;
}

.card-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    box-shadow: var(--glass-shadow);
}

.form-control-dark {
    background: rgba(11, 19, 43, 0.6);
    border: 1px solid var(--glass-border);
    color: #fff;
    transition: all 0.3s ease;
}

.form-control-dark:focus {
    background: rgba(11, 19, 43, 0.8);
    border-color: var(--color-acento2);
    color: #fff;
    box-shadow: 0 0 0 0.25rem rgba(91, 192, 190, 0.25);
}

.form-control-dark::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.btn-gradient {
    background: linear-gradient(135deg, var(--color-primario), var(--color-acento2));
    border: none;
    color: white;
    transition: all 0.3s ease;
}

.btn-gradient:hover {
    background: linear-gradient(135deg, var(--color-acento2), var(--color-claro));
    color: var(--color-fondo-oscuro);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(91, 192, 190, 0.4);
}