.activity-log-timeline {
    --c-bg-primary: #ffffff;
    --c-bg-secondary: rgba(var(--gray-50), 1);
    --c-bg-tertiary: rgba(var(--gray-100), 1);
    --c-border: rgba(var(--gray-200), 1);
    --c-border-hover: rgba(var(--gray-300), 1);
    --c-text-primary: rgba(var(--gray-950), 1);
    --c-text-secondary: rgba(var(--gray-500), 1);
    --c-text-tertiary: rgba(var(--gray-400), 1);
    --c-accent: rgba(var(--primary-600), 1);
    --c-line: rgba(var(--gray-200), 1);
    --c-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --c-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --c-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding: 1rem;
    font-family: var(--font-family, ui-sans-serif, system-ui, sans-serif);
}

:is(.dark) .activity-log-timeline {
    --c-bg-primary: rgba(var(--gray-900), 1);
    --c-bg-secondary: rgba(var(--gray-800), 1);
    --c-bg-tertiary: rgba(var(--gray-700), 1);
    --c-border: rgba(var(--gray-700), 1);
    --c-border-hover: rgba(var(--gray-600), 1);
    --c-text-primary: rgba(var(--gray-50), 1);
    --c-text-secondary: rgba(var(--gray-400), 1);
    --c-text-tertiary: rgba(var(--gray-500), 1);
    --c-line: rgba(var(--gray-700), 1);
    --c-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --c-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.6);
    --c-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.7);
}

.activity-log-item {
    position: relative;
    display: flex;
    gap: 1rem;
}

.activity-log-line {
    position: absolute;
    left: 1rem;
    top: 2.5rem;
    bottom: -2rem;
    width: 2px;
    background: linear-gradient(to bottom, var(--c-line) 50%, transparent 100%);
    opacity: 0.8;
}

.activity-log-item:last-child .activity-log-line {
    display: none;
}

.activity-log-icon-wrapper {
    position: relative;
    z-index: 10;
    display: flex;
    height: 2rem;
    width: 2rem;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--c-bg-primary);
    border: 2px solid var(--c-bg-tertiary);
    color: var(--c-text-secondary);
    box-shadow: var(--c-shadow-sm);
    transition: all 0.3s ease;
    margin-top: 0.75rem;
}

.activity-log-item:hover .activity-log-icon-wrapper {
    border-color: var(--c-accent);
    color: var(--c-accent);
    transform: scale(1.1);
}

.activity-log-card {
    flex: 1;
    min-width: 0;
    background-color: var(--c-bg-primary);
    border: 1px solid var(--c-border);
    border-radius: 0.75rem;
    box-shadow: var(--c-shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.activity-log-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--c-shadow-md);
    border-color: var(--c-border-hover);
}

.activity-log-header {
    display: flex;
    flex-direction: column;
    padding: 0.75rem 1rem;
    background-color: var(--c-bg-secondary);
    border-bottom: 1px solid var(--c-border);
    gap: 0.5rem;
}

@media (min-width: 640px) {
    .activity-log-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.activity-log-user {
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--c-text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.activity-log-event {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    background-color: var(--c-bg-primary);
    border: 1px solid var(--c-border);
    color: var(--c-text-secondary);
    box-shadow: var(--c-shadow-sm);
}

.activity-log-meta {
    font-size: 0.75rem;
    color: var(--c-text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.activity-log-body {
    padding: 1rem;
}

.activity-log-description {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--c-text-primary);
    margin-bottom: 0.75rem;
}

.activity-log-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px dashed var(--c-border);
}

.activity-log-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.7rem;
    font-weight: 500;
    background-color: var(--c-bg-tertiary);
    color: var(--c-text-secondary);
    border: 1px solid transparent;
    transition: all 0.2s;
}

.activity-log-badge:hover {
    background-color: var(--c-bg-secondary);
    border-color: var(--c-border);
    color: var(--c-text-primary);
}

.activity-log-changes-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    margin-top: 0.75rem;
    background-color: var(--c-bg-secondary);
    border: 1px solid var(--c-border);
    border-radius: 0.5rem;
    color: var(--c-text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.activity-log-changes-btn:hover {
    background-color: var(--c-bg-tertiary);
    color: var(--c-text-primary);
}

.activity-log-changes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

@media (min-width: 640px) {
    .activity-log-changes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.activity-log-change-card {
    border-radius: 0.5rem;
    border: 1px solid;
    overflow: hidden;
}

.activity-log-change-card.old {
    background-color: rgba(var(--danger-50), 0.5);
    border-color: rgba(var(--danger-200), 0.5);
}

.activity-log-change-card.new {
    background-color: rgba(var(--success-50), 0.5);
    border-color: rgba(var(--success-200), 0.5);
}

:is(.dark) .activity-log-change-card.old {
    background-color: rgba(var(--danger-950), 0.3);
    border-color: rgba(var(--danger-900), 0.3);
}

:is(.dark) .activity-log-change-card.new {
    background-color: rgba(var(--success-950), 0.3);
    border-color: rgba(var(--success-900), 0.3);
}

.activity-log-change-header {
    padding: 0.375rem 0.75rem;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid inherit;
}

.activity-log-change-card.old .activity-log-change-header {
    color: rgba(var(--danger-700), 1);
    background-color: rgba(var(--danger-100), 0.5);
    border-color: rgba(var(--danger-200), 0.5);
}

.activity-log-change-card.new .activity-log-change-header {
    color: rgba(var(--success-700), 1);
    background-color: rgba(var(--success-100), 0.5);
    border-color: rgba(var(--success-200), 0.5);
}

:is(.dark) .activity-log-change-card.old .activity-log-change-header {
    color: rgba(var(--danger-300), 1);
    background-color: rgba(var(--danger-900), 0.3);
}

:is(.dark) .activity-log-change-card.new .activity-log-change-header {
    color: rgba(var(--success-300), 1);
    background-color: rgba(var(--success-900), 0.3);
}

.activity-log-change-body {
    padding: 0;
}

.activity-log-change-item {
    display: flex;
    flex-direction: column;
    padding: 0.375rem 0.75rem;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.activity-log-change-item:last-child {
    border-bottom: none;
}

@media (min-width: 640px) {
    .activity-log-change-item {
        flex-direction: row;
        justify-content: space-between;
        align-items: baseline;
    }
}

.activity-log-change-key {
    font-size: 0.7rem;
    font-weight: 600;
    margin-bottom: 0.125rem;
}

.activity-log-change-card.old .activity-log-change-key { color: rgba(var(--danger-600), 1); }
.activity-log-change-card.new .activity-log-change-key { color: rgba(var(--success-600), 1); }

:is(.dark) .activity-log-change-card.old .activity-log-change-key { color: rgba(var(--danger-300), 1); }
:is(.dark) .activity-log-change-card.new .activity-log-change-key { color: rgba(var(--success-300), 1); }

.activity-log-change-value {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.7rem;
    word-break: break-all;
}

.activity-log-change-card.old .activity-log-change-value { color: rgba(var(--danger-800), 1); }
.activity-log-change-card.new .activity-log-change-value { color: rgba(var(--success-800), 1); }

:is(.dark) .activity-log-change-card.old .activity-log-change-value { color: rgba(var(--danger-200), 1); }
:is(.dark) .activity-log-change-card.new .activity-log-change-value { color: rgba(var(--success-200), 1); }

.activity-log-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding-top: 3rem;
    padding-bottom: 3rem;
    text-align: center;
}

.activity-log-empty-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 3rem;
    width: 3rem;
    border-radius: 9999px;
    background-color: var(--c-bg-secondary);
    color: var(--c-text-tertiary);
    margin-bottom: 1rem;
}

.activity-log-empty-title {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--c-text-primary);
}

.activity-log-empty-description {
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--c-text-secondary);
}

.activity-log-icon-sm {
    width: 0.875rem;
    height: 0.875rem;
}

.activity-log-icon-md {
    width: 1rem;
    height: 1rem;
}

.activity-log-icon-opacity-70 {
    opacity: 0.7;
}

.activity-log-toggle-icon {
    transition: transform 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.activity-log-rotate-180 {
    transform: rotate(180deg);
}

.activity-log-avatar {
    height: 100%;
    width: 100%;
    border-radius: 9999px;
    object-fit: cover;
}

.activity-log-avatar-icon-wrapper {
    position: absolute;
    bottom: -0.25rem;
    right: -0.25rem;
    border-radius: 9999px;
    background-color: #ffffff;
    padding: 0.125rem;
}

:is(.dark) .activity-log-avatar-icon-wrapper {
    background-color: rgba(var(--gray-900), 1);
}

.activity-log-icon-xs {
    width: 0.75rem;
    height: 0.75rem;
}

.activity-log-icon-lg {
    width: 1.25rem;
    height: 1.25rem;
}

.activity-log-header-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    overflow: hidden;
}

.activity-log-subject-id {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.75rem;
    opacity: 0.7;
}

.activity-log-meta-wrapper {
    display: flex;
    flex-shrink: 0;
    align-items: center;
    gap: 0.75rem;
}

.activity-log-time {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.activity-log-badge-truncate {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (min-width: 640px) {
    .activity-log-badge-truncate {
        max-width: 20rem;
    }
}

.activity-log-changes-btn-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.activity-log-simple-value {
    padding: 0.75rem;
    font-size: 0.75rem;
}

.activity-log-text-success { color: rgba(var(--success-500), 1); }
.activity-log-text-warning { color: rgba(var(--warning-500), 1); }
.activity-log-text-danger { color: rgba(var(--danger-500), 1); }
.activity-log-text-info { color: rgba(var(--info-500), 1); }
.activity-log-text-gray { color: rgba(var(--gray-500), 1); }

:is(.dark) .activity-log-timeline {
    --c-bg-primary: #18181b;
    --c-bg-secondary: #27272a;
    --c-bg-tertiary: #3f3f46;
    --c-border: #27272a;
    --c-border-hover: #3f3f46;
    --c-text-primary: #fafafa;
    --c-text-secondary: #a1a1aa;
    --c-text-tertiary: #71717a;
    --c-line: #27272a;
    --c-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --c-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.6);
    --c-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.7);
}

.activity-log-item {
    position: relative;
    display: flex;
    gap: 1rem;
}

.activity-log-line {
    position: absolute;
    left: 1rem;
    top: 2.5rem;
    bottom: -2rem;
    width: 2px;
    background: linear-gradient(to bottom, var(--c-line) 50%, transparent 100%);
    opacity: 0.8;
}

.activity-log-item:last-child .activity-log-line {
    display: none;
}

.activity-log-icon-wrapper {
    position: relative;
    z-index: 10;
    display: flex;
    height: 2rem;
    width: 2rem;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--c-bg-primary);
    border: 2px solid var(--c-bg-tertiary);
    color: var(--c-text-secondary);
    box-shadow: var(--c-shadow-sm);
    transition: all 0.3s ease;
    margin-top: 0.75rem;
}

.activity-log-item:hover .activity-log-icon-wrapper {
    border-color: var(--c-accent);
    color: var(--c-accent);
    transform: scale(1.1);
}

.activity-log-card {
    flex: 1;
    min-width: 0;
    background-color: var(--c-bg-primary);
    border: 1px solid var(--c-border);
    border-radius: 0.75rem;
    box-shadow: var(--c-shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.activity-log-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--c-shadow-md);
    border-color: var(--c-border-hover);
}

.activity-log-header {
    display: flex;
    flex-direction: column;
    padding: 0.75rem 1rem;
    background-color: var(--c-bg-secondary);
    border-bottom: 1px solid var(--c-border);
    gap: 0.5rem;
}

@media (min-width: 640px) {
    .activity-log-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.activity-log-user {
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--c-text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.activity-log-event {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    background-color: var(--c-bg-primary);
    border: 1px solid var(--c-border);
    color: var(--c-text-secondary);
    box-shadow: var(--c-shadow-sm);
}

.activity-log-meta {
    font-size: 0.75rem;
    color: var(--c-text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.activity-log-body {
    padding: 1rem;
}

.activity-log-description {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--c-text-primary);
    margin-bottom: 0.75rem;
}

.activity-log-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px dashed var(--c-border);
}

.activity-log-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.7rem;
    font-weight: 500;
    background-color: var(--c-bg-tertiary);
    color: var(--c-text-secondary);
    border: 1px solid transparent;
    transition: all 0.2s;
}

.activity-log-badge:hover {
    background-color: var(--c-bg-secondary);
    border-color: var(--c-border);
    color: var(--c-text-primary);
}

.activity-log-changes-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    margin-top: 0.75rem;
    background-color: var(--c-bg-secondary);
    border: 1px solid var(--c-border);
    border-radius: 0.5rem;
    color: var(--c-text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.activity-log-changes-btn:hover {
    background-color: var(--c-bg-tertiary);
    color: var(--c-text-primary);
}

.activity-log-changes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

@media (min-width: 640px) {
    .activity-log-changes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.activity-log-change-card {
    border-radius: 0.5rem;
    border: 1px solid;
    overflow: hidden;
}

.activity-log-change-card.old {
    background-color: rgba(254, 242, 242, 0.5);
    border-color: rgba(254, 202, 202, 0.5);
}

.activity-log-change-card.new {
    background-color: rgba(240, 253, 244, 0.5);
    border-color: rgba(187, 247, 208, 0.5);
}

:is(.dark) .activity-log-change-card.old {
    background-color: rgba(69, 10, 10, 0.3);
    border-color: rgba(127, 29, 29, 0.3);
}

:is(.dark) .activity-log-change-card.new {
    background-color: rgba(5, 46, 22, 0.3);
    border-color: rgba(20, 83, 45, 0.3);
}

.activity-log-change-header {
    padding: 0.375rem 0.75rem;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid inherit;
}

.activity-log-change-card.old .activity-log-change-header {
    color: #b91c1c;
    background-color: rgba(254, 226, 226, 0.5);
    border-color: rgba(254, 202, 202, 0.5);
}

.activity-log-change-card.new .activity-log-change-header {
    color: #15803d;
    background-color: rgba(220, 252, 231, 0.5);
    border-color: rgba(187, 247, 208, 0.5);
}

:is(.dark) .activity-log-change-card.old .activity-log-change-header {
    color: #fca5a5;
    background-color: rgba(127, 29, 29, 0.3);
}

:is(.dark) .activity-log-change-card.new .activity-log-change-header {
    color: #86efac;
    background-color: rgba(20, 83, 45, 0.3);
}

.activity-log-change-body {
    padding: 0;
}

.activity-log-change-item {
    display: flex;
    flex-direction: column;
    padding: 0.375rem 0.75rem;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.activity-log-change-item:last-child {
    border-bottom: none;
}

@media (min-width: 640px) {
    .activity-log-change-item {
        flex-direction: row;
        justify-content: space-between;
        align-items: baseline;
    }
}

.activity-log-change-key {
    font-size: 0.7rem;
    font-weight: 600;
    margin-bottom: 0.125rem;
}

.activity-log-change-card.old .activity-log-change-key { color: #dc2626; }
.activity-log-change-card.new .activity-log-change-key { color: #16a34a; }

:is(.dark) .activity-log-change-card.old .activity-log-change-key { color: #fca5a5; }
:is(.dark) .activity-log-change-card.new .activity-log-change-key { color: #86efac; }

.activity-log-change-value {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.7rem;
    word-break: break-all;
}

.activity-log-change-card.old .activity-log-change-value { color: #991b1b; }
.activity-log-change-card.new .activity-log-change-value { color: #166534; }

:is(.dark) .activity-log-change-card.old .activity-log-change-value { color: #fecaca; }
:is(.dark) .activity-log-change-card.new .activity-log-change-value { color: #bbf7d0; }

.activity-log-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding-top: 3rem;
    padding-bottom: 3rem;
    text-align: center;
}

.activity-log-empty-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 3rem;
    width: 3rem;
    border-radius: 9999px;
    background-color: var(--c-bg-secondary);
    color: var(--c-text-tertiary);
    margin-bottom: 1rem;
}

.activity-log-empty-title {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--c-text-primary);
}

.activity-log-empty-description {
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--c-text-secondary);
}

/* Icons */
.activity-log-icon-sm {
    width: 0.875rem;
    height: 0.875rem;
}

.activity-log-icon-md {
    width: 1rem;
    height: 1rem;
}

.activity-log-icon-opacity-70 {
    opacity: 0.7;
}

.activity-log-toggle-icon {
    transition: transform 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.activity-log-rotate-180 {
    transform: rotate(180deg);
}

/* Avatar */
.activity-log-avatar {
    height: 100%;
    width: 100%;
    border-radius: 9999px;
    object-fit: cover;
}

.activity-log-avatar-icon-wrapper {
    position: absolute;
    bottom: -0.25rem;
    right: -0.25rem;
    border-radius: 9999px;
    background-color: #ffffff;
    padding: 0.125rem;
}

:is(.dark) .activity-log-avatar-icon-wrapper {
    background-color: #111827;
}

/* Icon Sizes */
.activity-log-icon-xs {
    width: 0.75rem;
    height: 0.75rem;
}

.activity-log-icon-lg {
    width: 1.25rem;
    height: 1.25rem;
}

/* Header Content */
.activity-log-header-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    overflow: hidden;
}

.activity-log-subject-id {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.75rem;
    opacity: 0.7;
}

.activity-log-meta-wrapper {
    display: flex;
    flex-shrink: 0;
    align-items: center;
    gap: 0.75rem;
}

.activity-log-time {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Badge Truncation */
.activity-log-badge-truncate {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (min-width: 640px) {
    .activity-log-badge-truncate {
        max-width: 20rem;
    }
}

/* Changes Button Content */
.activity-log-changes-btn-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Simple Value */
.activity-log-simple-value {
    padding: 0.75rem;
    font-size: 0.75rem;
}

/* Text Colors */
.activity-log-text-success { color: #22c55e; }
.activity-log-text-warning { color: #eab308; }
.activity-log-text-danger { color: #ef4444; }
.activity-log-text-info { color: #3b82f6; }
.activity-log-text-gray { color: #6b7280; }