body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--bs-body-bg);
}
.login-wrapper { width: 100%; max-width: 460px; padding: 0 1rem; }
.form-control:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}
.marque-nom { font-size: 1.15rem; line-height: 1.3; }
.label-row { display: flex; justify-content: space-between; align-items: baseline; }
.theme-btn { position: fixed; top: 1rem; right: 1rem; }
.login-footer {
    position: fixed; bottom: 1rem; width: 100%;
    text-align: center; font-size: 0.8rem; color: var(--bs-secondary-color);
}
.input-group .btn-outline-secondary { border-color: var(--bs-border-color); }