.ds-alert {
    display: flex;
    align-items: flex-start;
    gap: var(--ds-space-3);
    padding: var(--ds-space-3) var(--ds-space-4);
    border-radius: var(--ds-radius-md);
    font-size: var(--ds-text-sm);
    line-height: var(--ds-leading-relaxed);
    border: 1px solid transparent;
    border-left: 3px solid transparent;
}

.ds-alert__icon {
    flex-shrink: 0;
    font-size: 1rem;
    margin-top: 1px;
}

.ds-alert__body {
    flex: 1;
}

.ds-alert__title {
    font-weight: var(--ds-font-bold);
    margin-bottom: 2px;
}

.ds-alert--info {
    background: var(--ds-color-primary-muted);
    color: #2A42B8;
    border-color: var(--ds-color-primary-border);
    border-left-color: var(--ds-color-primary);
}

.ds-alert--success {
    background: var(--ds-color-success-muted);
    color: var(--ds-color-success-text);
    border-color: var(--ds-color-success-border);
    border-left-color: var(--ds-color-success);
}

.ds-alert--warning {
    background: var(--ds-color-warning-muted);
    color: var(--ds-color-warning-text);
    border-color: var(--ds-color-warning-border);
    border-left-color: var(--ds-color-warning);
}

.ds-alert--error {
    background: var(--ds-color-danger-muted);
    color: var(--ds-color-danger-text);
    border-color: var(--ds-color-danger-border);
    border-left-color: var(--ds-color-danger);
}

.ds-spinner {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--ds-space-3);
    color: var(--ds-color-primary);
    font-size: var(--ds-text-sm);
    font-weight: var(--ds-font-bold);
    padding: var(--ds-space-3);
    text-align: center;
}

.ds-spinner::before {
    content: '';
    width: 22px;
    height: 22px;
    border: 2.5px solid var(--ds-color-primary-border);
    border-top-color: var(--ds-color-primary);
    border-radius: 50%;
    animation: ds-spin 0.75s linear infinite;
    flex-shrink: 0;
}

.ds-spinner--sm::before {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

.ds-spinner--lg::before {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

.ds-spinner--center {
    width: 100%;
    justify-content: center;
}

.ds-spinner--dual {
    position: relative;
    width: 32px;
    height: 32px;
    padding: 0;
    gap: 0;
    font-size: 0;
}

.ds-spinner--dual::before {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 3px solid var(--ds-color-primary-muted);
    border-top-color: var(--ds-color-primary);
    border-right-color: var(--ds-color-primary);
    animation: ds-spin 0.9s linear infinite;
}

.ds-spinner--dual::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    width: calc(100% - 16px);
    height: calc(100% - 16px);
    border: 2.5px solid var(--ds-color-primary-muted);
    border-bottom-color: var(--ds-color-primary);
    border-left-color: var(--ds-color-primary);
    border-radius: 50%;
    animation: ds-spin 0.6s linear infinite reverse;
}

.ds-spinner--dots::before {
    display: none;
}

.ds-spinner--dots {
    gap: 6px;
    padding: var(--ds-space-2) var(--ds-space-3);
}

.ds-spinner--dots span {
    display: block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--ds-color-primary);
    animation: ds-dot-blink 1.2s ease-in-out infinite both;
    flex-shrink: 0;
}

.ds-spinner--dots span:nth-child(1) {
    animation-delay: 0s;
}

.ds-spinner--dots span:nth-child(2) {
    animation-delay: 0.18s;
}

.ds-spinner--dots span:nth-child(3) {
    animation-delay: 0.36s;
}

.ds-spinner--bars::before {
    display: none;
}

.ds-spinner--bars {
    gap: 4px;
    align-items: flex-end;
    padding: var(--ds-space-2) var(--ds-space-3);
    height: 46px;
}

.ds-spinner--bars span {
    display: block;
    width: 4px;
    height: 22px;
    border-radius: var(--ds-radius-sm);
    background: var(--ds-color-primary);
    animation: ds-bar-grow 0.9s ease-in-out infinite;
    transform-origin: bottom center;
    flex-shrink: 0;
}

.ds-spinner--bars span:nth-child(1) {
    animation-delay: 0s;
}

.ds-spinner--bars span:nth-child(2) {
    animation-delay: 0.12s;
}

.ds-spinner--bars span:nth-child(3) {
    animation-delay: 0.24s;
}

.ds-spinner--bars span:nth-child(4) {
    animation-delay: 0.36s;
}

.ds-skeleton {
    background: linear-gradient(90deg, #E8ECF5 25%, #D8DFF0 50%, #E8ECF5 75%);
    background-size: 200% 100%;
    border-radius: var(--ds-radius-md);
    animation: ds-shimmer 1.6s ease-in-out infinite;
}

.ds-toast {
    position: fixed;
    bottom: var(--ds-space-6);
    right: var(--ds-space-6);
    background: var(--ds-color-surface);
    color: var(--ds-color-text-primary);
    padding: 12px var(--ds-space-4);
    border-radius: var(--ds-radius-lg);
    font-size: var(--ds-text-sm);
    font-weight: var(--ds-font-medium);
    box-shadow: var(--ds-shadow-xl);
    border: 1px solid var(--ds-color-border-strong);
    border-left: 3px solid var(--ds-color-primary);
    z-index: var(--ds-z-toast);
    opacity: 0;
    transform: translateY(16px) scale(0.96);
    transition:
        opacity var(--ds-transition-medium),
        transform var(--ds-transition-spring-fast);
    max-width: 340px;
    word-break: break-word;
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: var(--ds-space-2);
}

.ds-toast.is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.ds-toast--success {
    background: #F0FDF9;
    border: 1px solid var(--ds-color-success-border);
    border-left: 3px solid var(--ds-color-success);
    color: var(--ds-color-success-text);
}

.ds-toast--danger {
    background: #FEF2F2;
    border: 1px solid var(--ds-color-danger-border);
    border-left: 3px solid var(--ds-color-danger);
    color: #991B1B;
}

.ds-toast--warning {
    background: #FFFBEB;
    border: 1px solid var(--ds-color-warning-border);
    border-left: 3px solid var(--ds-color-warning);
    color: var(--ds-color-warning-text);
}

@media (max-width: 768px) {
    .ds-toast {
        right: var(--ds-space-4);
        left: var(--ds-space-4);
        max-width: none;
        bottom: var(--ds-space-4);
    }
}