/* Modal service: overlay and layer slot. Content is provided by the caller. */
.app-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    animation: app-modal-fade-in 0.2s ease-out;
}

@keyframes app-modal-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.app-modal-layer {
    background-color: var(--background-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 400px;
    width: 100%;
    animation: app-modal-scale-in 0.2s ease-out;
}

@keyframes app-modal-scale-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Alert component content (uses modal layer) */
.app-alert-header {
    padding: var(--spacing-lg) var(--spacing-lg) 0;
}

.app-alert-title {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.app-alert-body {
    padding: var(--spacing-lg);
    padding-top: var(--spacing-sm);
}

.app-alert-message {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    line-height: 1.5;
    margin: 0;
}

.app-alert-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
}

.app-alert-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--border-radius-md);
    border: none;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.app-alert-btn-primary {
    background-color: var(--primary-color);
    color: var(--text-white);
}

.app-alert-btn-primary:hover {
    background-color: var(--primary-hover);
}

.app-alert-btn:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}