/* Auth — đăng nhập / đăng ký (vàng–đen) */
.app-shell--auth .app-main {
    display: flex;
    flex-direction: column;
}

.app-shell--auth .app-main > .container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
}

@media (max-width: 767.98px) {
    .app-shell--auth .app-main > .container {
        justify-content: flex-start;
        padding-top: .75rem;
        padding-bottom: 1rem;
    }

    .app-shell--auth .auth-page {
        align-items: flex-start;
    }

    .app-shell--auth .register-shell {
        padding-bottom: 1rem;
    }
}

.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    margin: auto 0;
    padding: 0;
}

.auth-card {
    background: linear-gradient(160deg, #1a1a1a 0%, #141414 100%);
    border: 1px solid rgba(212, 175, 55, .28);
    border-radius: 1.25rem;
    box-shadow: 0 24px 48px rgba(0, 0, 0, .45), 0 0 0 1px rgba(212, 175, 55, .06) inset;
    color: #f5f5f5;
}

.auth-card h2 {
    font-weight: 800;
    font-size: 1.6rem;
    color: #e8c547;
    letter-spacing: -.02em;
}

.auth-card .text-muted {
    color: var(--app-text-muted) !important;
}

.auth-card .form-label {
    font-size: .8125rem;
    font-weight: 600;
    letter-spacing: .02em;
    text-transform: none;
    color: var(--app-text-secondary);
}

.auth-card a {
    color: #d4af37;
    font-weight: 600;
    text-decoration: none;
}

.auth-card a:hover {
    color: #e8c547;
    text-decoration: underline;
}

.auth-card .form-check-label {
    color: var(--app-text-secondary);
}

.auth-card .form-check-input {
    background-color: #1a1a1a;
    border-color: #444;
}

.auth-card .form-check-input:checked {
    background-color: #d4af37;
    border-color: #d4af37;
}

.auth-brand-mark {
    width: 3rem;
    height: 3rem;
    border-radius: .85rem;
    background: linear-gradient(135deg, #d4af37, #9a7b0a);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    color: #0a0a0a;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}