.flash-messages {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: min(420px, 90vw);
}

.flash {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    background: var(--bg-dark-strong);
    border: 1px solid var(--border);
    color: var(--text);
    box-shadow: var(--shadow);
    font-size: .95rem;
}

.flash-success {
    border-color: var(--cyan);
}

.flash-error {
    border-color: #d9534f;
}