/* Simple toast system */
.app-toast-container {
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    top: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.app-toast {
    min-width: 200px;
    max-width: 360px;
    padding: 0.65rem 0.9rem;
    border-radius: 6px;
    color: white;
    background: rgba(0,0,0,0.7);
    opacity: 0; transform: translateY(-6px);
    transition: opacity .18s ease, transform .18s ease;
    box-shadow: 0 6px 18px rgba(0,0,0,0.18);
    font-weight: 600;
    font-size: 13px;
}
.app-toast.show { opacity: 1; transform: translateY(0); }
.app-toast.info { background: linear-gradient(90deg, var(--sidebar-active-from), var(--sidebar-active-to)); }
.app-toast.success { background: linear-gradient(90deg, var(--md-success-80), var(--md-success-40)); }
.app-toast.error { background: linear-gradient(90deg, var(--md-error-80), var(--md-error-40)); }
.app-toast.warn { background: linear-gradient(90deg, var(--md-warning-80), var(--md-warning-40)); }