html {
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

/* Modo Oscuro */
body.dark-mode {
    background-color: #121212;
    color: #f5f5f5;
}

    body.dark-mode .navbar,
    body.dark-mode .footer {
        background-color: #1f1f1f !important;
    }

    body.dark-mode .card {
        background-color: #1f1f1f;
        border-color: #2c2c2c;
        color: #f5f5f5;
    }

    body.dark-mode .form-control,
    body.dark-mode .form-select {
        background-color: #1f1f1f;
        color: #f5f5f5;
        border-color: #444;
    }

        body.dark-mode .form-control::placeholder {
            color: #ccc;
        }

    body.dark-mode .btn-outline-dark {
        border-color: #f5f5f5;
        color: #f5f5f5;
    }

        body.dark-mode .btn-outline-dark:hover {
            background-color: #f5f5f5;
            color: #121212;
        }

    body.dark-mode .nav-link {
        color: #f5f5f5 !important;
    }

        body.dark-mode .nav-link:hover {
            color: #ffffff !important;
        }

.nav-link {
    color: #212529;
}

.navbar-light {
    background-color: #f8f9fa !important;
}