html,
body {
    height: 100%;
    background-color: var(--bg-main);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.flex-fill {
    flex: 1 0 auto;
}

a {
    color: var(--text-main);
}

a:hover {
    color: var(--accent);
}

.form-control {
    background-color: var(--bg-card-2);
    color: var(--text-main);
    border-color: var(--bg-border);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.placeholder-muted::placeholder {
    color: #6c757d !important;
    opacity: 1;
}

/* input focus */
.form-control:focus {
    background-color: #2c3034; /* bg-dark-2 */
    color: #fff;
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}