.app-toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: min(360px, calc(100% - 32px));
    z-index: 9999;
    pointer-events: none;
}

@media (max-width: 640px) {
    .app-toast-container {
        left: 50%;
        right: auto;
        transform: translateX(-50%);
    }
}

.app-toast {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    background: #fff;
    border-radius: var(--radius-lg, 16px);
    padding: 14px 16px;
    border-left: 5px solid var(--color-gray-200, #e5e7eb);
    box-shadow: 0 12px 35px rgba(15, 23, 42, 0.18);
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: auto;
}

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

.app-toast__icon {
    width: 28px;
    height: 28px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.app-toast__body {
    flex: 1;
}

.app-toast__title {
    font-weight: var(--font-semibold, 600);
    color: var(--color-gray-900, #111827);
    font-size: var(--text-sm, 0.875rem);
    margin-bottom: 2px;
}

.app-toast__message {
    margin: 0;
    color: var(--color-gray-600, #4b5563);
    font-size: var(--text-sm, 0.875rem);
}

.app-toast__close {
    border: none;
    background: transparent;
    color: var(--color-gray-400, #94a3b8);
    cursor: pointer;
    padding: 2px;
}


.app-toast--success {
    border-left-color: var(--color-success, #16a34a);
}

.app-toast--success .app-toast__icon {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success, #16a34a);
}

.app-toast--error {
    border-left-color: var(--color-error, #dc2626);
}

.app-toast--error .app-toast__icon {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error, #dc2626);
}

.app-toast--warning {
    border-left-color: #f59e0b;
}

.app-toast--warning .app-toast__icon {
    background: rgba(245, 158, 11, 0.15);
    color: #b45309;
}

.app-toast--info {
    border-left-color: var(--color-accent, #7e22ce);
}

.app-toast--info .app-toast__icon {
    background: rgba(79, 70, 229, 0.15);
    color: var(--color-accent, #7e22ce);
}

.app-alert-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 9998;
}

.app-alert-overlay.is-visible {
    display: flex;
}

.app-alert-modal {
    width: min(420px, 100%);
    background: var(--color-white, #fff);
    border-radius: var(--radius-xl, 20px);
    padding: 28px;
    box-shadow: 0 25px 65px rgba(15, 23, 42, 0.25);
    text-align: center;
}

.app-alert-modal__icon {
    width: 56px;
    height: 56px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 16px;
}

.app-alert-modal__title {
    margin: 0 0 8px;
    font-size: 1.25rem;
    font-weight: var(--font-semibold, 600);
    color: var(--color-gray-900, #111827);
}

.app-alert-modal__message {
    margin: 0 0 20px;
    color: var(--color-gray-600, #4b5563);
    font-size: var(--text-base, 1rem);
}

.app-alert-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.app-alert-actions button {
    border: none;
    border-radius: var(--radius-lg, 999px);
    padding: 10px 20px;
    font-weight: var(--font-medium, 500);
    cursor: pointer;
}

.app-alert-actions .app-alert-confirm {
    background: var(--color-gray-900, #111827);
    color: #fff;
}

.app-alert-actions .app-alert-cancel {
    background: var(--color-gray-100, #f3f4f6);
    color: var(--color-gray-700, #374151);
}

.app-alert-modal--success .app-alert-modal__icon {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success, #16a34a);
}

.app-alert-modal--error .app-alert-modal__icon {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error, #dc2626);
}

.app-alert-modal--warning .app-alert-modal__icon {
    background: rgba(245, 158, 11, 0.15);
    color: #b45309;
}

.app-alert-modal--info .app-alert-modal__icon {
    background: rgba(59, 130, 246, 0.15);
    color: #2563eb;
}

@media (max-width: 480px) {
    .app-alert-modal {
        padding: 22px 20px;
    }
}