.activity-refresh-button {
    min-height: 38px;
    padding: 0 13px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--bw-border);
    border-radius: 11px;
    background: var(--bw-surface-soft);
    color: var(--bw-text-secondary);
    font-size: 0.66rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 150ms ease, border-color 150ms ease, background 150ms ease, opacity 150ms ease;
}

    .activity-refresh-button:hover:not(:disabled) {
        transform: translateY(-1px);
        border-color: var(--bw-border-strong);
        background: var(--bw-surface-hover);
    }

    .activity-refresh-button:disabled {
        opacity: 0.5;
        cursor: wait;
    }

.activity-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.activity-filters {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 7px;
}

.activity-filter {
    min-height: 35px;
    padding: 0 11px;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    border: 1px solid var(--bw-border);
    border-radius: 10px;
    background: var(--bw-surface-soft);
    color: var(--bw-text-muted);
    font-size: 0.62rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 150ms ease, color 150ms ease, border-color 150ms ease;
}

    .activity-filter:hover {
        color: var(--bw-text);
        border-color: var(--bw-border-strong);
    }

    .activity-filter.active {
        border-color: rgba(82, 107, 240, 0.22);
        background: rgba(82, 107, 240, 0.11);
        color: #879aff;
    }

    .activity-filter > span {
        min-width: 18px;
        padding: 2px 5px;
        border-radius: 999px;
        background: rgba(100, 120, 170, 0.08);
        font-size: 0.52rem;
        text-align: center;
    }

.activity-retention-note {
    color: var(--bw-text-subtle);
    font-size: 0.54rem;
}

.alert-list {
    display: grid;
    gap: 10px;
}

.activity-action-error {
    padding: 11px 13px;
    border: 1px solid rgba(218, 79, 71, 0.16);
    border-radius: 11px;
    background: rgba(218, 79, 71, 0.06);
    color: #df7068;
    font-size: 0.62rem;
}

.alerts-empty {
    min-height: 380px;
    padding: 35px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--bw-border);
    border-radius: 21px;
    background: var(--bw-surface-soft);
    text-align: center;
}

.alerts-empty-icon {
    width: 55px;
    height: 55px;
    margin-bottom: 18px;
    display: grid;
    place-items: center;
    border-radius: 18px;
    background: rgba(54, 181, 116, 0.09);
    color: #49b87d;
    font-size: 1.05rem;
    font-weight: 800;
}

.alerts-empty h2 {
    margin: 9px 0 7px;
    color: var(--bw-text);
    font-size: 1.25rem;
    letter-spacing: -0.04em;
}

.alerts-empty p {
    max-width: 500px;
    margin: 0;
    color: var(--bw-text-muted);
    font-size: 0.72rem;
    line-height: 1.6;
}

.alerts-filter-empty {
    min-height: 180px;
    padding: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px dashed var(--bw-border);
    border-radius: 17px;
    color: var(--bw-text-muted);
    text-align: center;
}

    .alerts-filter-empty strong {
        color: var(--bw-text-secondary);
        font-size: 0.72rem;
    }

    .alerts-filter-empty span {
        margin-top: 5px;
        font-size: 0.61rem;
    }

.activity-summary-skeleton {
    display: grid;
    grid-template-columns: repeat( 3, minmax(0, 1fr));
    gap: 12px;
}

    .activity-summary-skeleton > div,
    .alert-loading-row {
        position: relative;
        overflow: hidden;
        border: 1px solid var(--bw-border);
        background: var(--bw-surface-soft);
    }

    .activity-summary-skeleton > div {
        height: 105px;
        border-radius: 17px;
    }

.alert-loading-list {
    display: grid;
    gap: 10px;
}

.alert-loading-row {
    height: 135px;
    border-radius: 18px;
}

    .activity-summary-skeleton > div::after,
    .alert-loading-row::after {
        content: "";
        position: absolute;
        inset: 0;
        transform: translateX(-100%);
        background: linear-gradient( 90deg, transparent, rgba(130, 150, 200, 0.07), transparent);
        animation: billwatch-alert-shimmer 1.5s infinite;
    }

@keyframes billwatch-alert-shimmer {
    100% {
        transform: translateX(100%);
    }
}

@media (max-width: 700px) {
    .activity-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .activity-retention-note {
        display: none;
    }

    .activity-filters {
        width: 100%;
    }

    .activity-filter {
        flex: 1;
        justify-content: space-between;
    }
}

@media (max-width: 650px) {
    .activity-summary-skeleton {
        grid-template-columns: 1fr;
    }
}