.design-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-md);
    transition: border-color 180ms ease-out, box-shadow 180ms ease-out, transform 180ms ease-out;
}

.design-card:hover {
    border-color: var(--color-accent-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.design-card:focus-within {
    outline: 2px solid var(--color-accent-blue);
    outline-offset: 2px;
}

.data-card {
    padding: var(--spacing-xl);
}

.data-card__header,
.metric-card__header,
.timeline-event {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.data-card__header {
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.data-card__heading {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: var(--spacing-md);
}

.data-card__icon,
.metric-card__icon,
.empty-state__icon {
    display: inline-grid;
    flex: 0 0 auto;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-accent-blue);
    background: var(--color-info-bg);
}

.hero-icon {
    width: 24px;
    height: 24px;
}

.hero-icon--small {
    width: 18px;
    height: 18px;
}

.metric-card {
    min-height: 184px;
    padding: var(--spacing-xl);
}

.metric-card__header {
    justify-content: space-between;
}

.metric-card__value-row {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.metric-card__value {
    color: var(--color-text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-3xl);
    font-variant-numeric: tabular-nums;
}

.metric-card__unit {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.metric-card__footer {
    display: flex;
    min-height: 44px;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.metric-card--success { --metric-accent: var(--color-success); }
.metric-card--warning { --metric-accent: var(--color-warning); }
.metric-card--danger { --metric-accent: var(--color-danger); }
.metric-card--info { --metric-accent: var(--color-info); }

.metric-card .metric-card__icon {
    color: var(--metric-accent, var(--color-info));
}

.metric-trend {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    min-height: 28px;
    padding: 2px var(--spacing-sm);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-xs);
}

.metric-trend--up {
    color: var(--color-success);
    background: var(--color-success-bg);
}

.metric-trend--down {
    color: var(--color-danger);
    background: var(--color-danger-bg);
}

.metric-trend--neutral {
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-height: 32px;
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid currentColor;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-xs);
}

.status-badge__indicator {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: currentColor;
}

.status-badge__timestamp {
    color: inherit;
    font-family: var(--font-mono);
    font-weight: var(--font-weight-normal);
}

.status-badge--success {
    color: var(--color-success);
    background: var(--color-success-bg);
}

.status-badge--warning {
    color: var(--color-warning);
    background: var(--color-warning-bg);
}

.status-badge--danger {
    color: var(--color-danger);
    background: var(--color-danger-bg);
}

.status-badge--info {
    color: var(--color-info);
    background: var(--color-info-bg);
}

.status-badge--neutral {
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
}

.alert-box {
    display: flex;
    width: 100%;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border: 1px solid currentColor;
    border-radius: var(--radius-md);
}

.alert-box--success {
    color: var(--color-success);
    background: var(--color-success-bg);
}

.alert-box--warning {
    color: var(--color-warning);
    background: var(--color-warning-bg);
}

.alert-box--danger {
    color: var(--color-danger);
    background: var(--color-danger-bg);
}

.alert-box--info {
    color: var(--color-info);
    background: var(--color-info-bg);
}

.alert-box__message {
    flex: 1;
    color: var(--color-text-primary);
}

.icon-button {
    display: inline-grid;
    place-items: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    border-radius: var(--radius-md);
    color: currentColor;
    background: transparent;
    cursor: pointer;
}

.icon-button:hover {
    background: rgb(127 127 127 / 12%);
}

.icon-button:focus-visible,
.design-button:focus-visible {
    outline: 2px solid var(--color-accent-blue);
    outline-offset: 2px;
}

.timeline-event {
    position: relative;
    padding: 0 0 var(--spacing-xl) var(--spacing-xl);
}

.timeline-event::before {
    position: absolute;
    top: 24px;
    bottom: 0;
    left: 11px;
    width: 1px;
    background: var(--color-border);
    content: "";
}

.timeline-event:last-child::before {
    display: none;
}

.timeline-event__marker {
    position: absolute;
    top: 2px;
    left: 0;
    display: inline-grid;
    place-items: center;
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-bg-elevated);
    border-radius: var(--radius-full);
    color: var(--color-bg-elevated);
    background: var(--timeline-color, var(--color-info));
    box-shadow: 0 0 0 1px var(--color-border);
}

.timeline-event__content {
    min-width: 0;
}

.timeline-event__marker--success { --timeline-color: var(--color-success); }
.timeline-event__marker--warning { --timeline-color: var(--color-warning); }
.timeline-event__marker--danger { --timeline-color: var(--color-danger); }
.timeline-event__marker--info { --timeline-color: var(--color-info); }

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.status-indicator__dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--color-danger);
}

.status-indicator__dot--online {
    background: var(--color-success);
    animation: status-pulse 2s ease-in-out infinite;
}

.status-indicator__signal {
    display: inline-flex;
    align-items: flex-end;
    gap: 2px;
    height: 16px;
}

.status-indicator__bar {
    width: 3px;
    border-radius: 2px;
    background: var(--color-border);
}

.status-indicator__bar:nth-child(1) { height: 4px; }
.status-indicator__bar:nth-child(2) { height: 8px; }
.status-indicator__bar:nth-child(3) { height: 12px; }
.status-indicator__bar:nth-child(4) { height: 16px; }
.status-indicator__bar--active { background: var(--color-success); }

.confirm-dialog {
    max-width: 480px;
    color: var(--color-text-primary);
}

.confirm-dialog__actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-xl);
}

.design-button {
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font: inherit;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: background-color 150ms ease-out, border-color 150ms ease-out, box-shadow 150ms ease-out;
}

.design-button--primary {
    border-color: var(--color-accent-blue);
    color: #ffffff;
    background: var(--color-accent-blue);
}

.design-button--primary:hover {
    background: var(--color-accent-blue-dark);
}

.design-button--secondary {
    color: var(--color-text-primary);
    background: var(--color-bg-elevated);
}

.design-button--secondary:hover {
    border-color: var(--color-accent-blue);
    background: var(--color-bg-secondary);
}

.design-button:disabled {
    cursor: not-allowed;
    opacity: 0.58;
}

.loading-skeleton {
    display: grid;
    gap: var(--spacing-md);
}

.loading-skeleton__row {
    height: 20px;
    border-radius: var(--radius-sm);
    background: linear-gradient(
        90deg,
        var(--color-bg-secondary) 20%,
        var(--color-bg-elevated) 45%,
        var(--color-bg-secondary) 70%
    );
    background-size: 250% 100%;
    animation: skeleton-shimmer 1.8s ease-in-out infinite;
}

.loading-skeleton__row:nth-child(3n + 1) { width: 100%; }
.loading-skeleton__row:nth-child(3n + 2) { width: 84%; }
.loading-skeleton__row:nth-child(3n) { width: 68%; }

.empty-state {
    display: grid;
    place-items: center;
    gap: var(--spacing-md);
    min-height: 220px;
    padding: var(--spacing-2xl);
    color: var(--color-text-secondary);
    text-align: center;
}

.empty-state__description {
    max-width: 52ch;
}

.trend-sparkline {
    width: 100%;
    min-width: 96px;
    overflow: hidden;
}

@keyframes status-pulse {
    0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--color-success) 45%, transparent); opacity: 1; }
    50% { box-shadow: 0 0 0 6px transparent; opacity: 0.72; }
}

@keyframes skeleton-shimmer {
    0% { background-position: 100% 0; }
    100% { background-position: -100% 0; }
}

@media (max-width: 640px) {
    .data-card,
    .metric-card {
        padding: var(--spacing-lg);
    }

    .metric-card__footer,
    .confirm-dialog__actions {
        align-items: stretch;
        flex-direction: column;
    }

    .design-button {
        width: 100%;
    }
}