.app-message-stack {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 3000;
    display: grid;
    gap: 10px;
    width: min(360px, calc(100vw - 28px));
    pointer-events: none;
}

.app-message {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 10px;
    align-items: start;
    padding: 12px 14px;
    border: 1px solid rgba(148, 163, 184, 0.24);
    border-left-width: 4px;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.96);
    color: #e5eefb;
    box-shadow: 0 16px 36px rgba(2, 6, 23, 0.28);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 160ms ease, transform 160ms ease;
    pointer-events: auto;
}

.app-message.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.app-message__icon {
    display: grid;
    place-items: center;
    width: 24px;
    height: 24px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 800;
    line-height: 1;
}

.app-message__content {
    min-width: 0;
}

.app-message__title {
    margin: 0;
    color: inherit;
    font-size: 0.92rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: 0;
}

.app-message__text {
    margin: 3px 0 0;
    color: rgba(229, 238, 251, 0.78);
    font-size: 0.82rem;
    line-height: 1.38;
    overflow-wrap: anywhere;
}

.app-message__close {
    width: 26px;
    height: 26px;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: inherit;
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    opacity: 0.72;
}

.app-message__close:hover {
    background: rgba(255, 255, 255, 0.08);
    opacity: 1;
}

.app-message--success {
    border-left-color: #34d399;
}

.app-message--success .app-message__icon {
    background: rgba(52, 211, 153, 0.16);
    color: #34d399;
}

.app-message--error {
    border-left-color: #fb7185;
}

.app-message--error .app-message__icon {
    background: rgba(251, 113, 133, 0.16);
    color: #fb7185;
}

.app-message--warning {
    border-left-color: #fbbf24;
}

.app-message--warning .app-message__icon {
    background: rgba(251, 191, 36, 0.16);
    color: #fbbf24;
}

.app-message--info {
    border-left-color: #38bdf8;
}

.app-message--info .app-message__icon {
    background: rgba(56, 189, 248, 0.16);
    color: #38bdf8;
}

.app-message-inline {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    margin-top: 12px;
    padding: 10px 12px;
    border: 1px solid rgba(148, 163, 184, 0.24);
    border-left: 4px solid #38bdf8;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.72);
    color: #e5eefb;
    font-size: 0.86rem;
    line-height: 1.35;
}

.app-message-inline.is-error {
    border-left-color: #fb7185;
}

.app-message-inline.is-warning {
    border-left-color: #fbbf24;
}

.app-message-inline.is-success {
    border-left-color: #34d399;
}

@media (max-width: 520px) {
    .app-message-stack {
        right: 14px;
        bottom: 14px;
    }
}