/* Activity Page Styles */

.activity-page {
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.activity-page .page-header {
    margin-bottom: 24px;
}

.activity-page .page-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

/* Page header row with export button */
.page-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

/* Header actions flex container */
.activity-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* Export button style */
.activity-export-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.activity-export-btn:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.activity-export-btn svg {
    flex-shrink: 0;
}

/* Legacy support */
.btn-export-csv {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-export-csv:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-export-csv svg {
    flex-shrink: 0;
}

/* ===================== */
/* Summary Banner        */
/* ===================== */
.activity-summary-banner {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 24px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(79, 143, 247, 0.2);
}

.summary-banner-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    color: #fff;
    flex-shrink: 0;
}

.summary-banner-content {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 20px;
    min-width: 0;
}

.summary-banner-text {
    font-size: 15px;
    color: #fff;
    line-height: 1.5;
}

.summary-highlight {
    font-weight: 700;
    font-size: 16px;
}

.summary-muted {
    opacity: 0.85;
}

.summary-banner-sparkline {
    flex-shrink: 0;
    color: rgba(255, 255, 255, 0.7);
}

.sparkline-svg {
    display: block;
}

.summary-loading {
    padding: 16px 0;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 13px;
}

/* ===================== */
/* Filter Pills          */
/* ===================== */
.activity-filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    padding: 16px 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
}

.filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    color: var(--color-text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.filter-pill:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.filter-pill.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.filter-pill-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}

.filter-pill.active .filter-pill-count {
    background: rgba(255, 255, 255, 0.25);
}

/* ===================== */
/* Stats Cards           */
/* ===================== */
.activity-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.activity-stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.activity-stat-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    transform: translateY(-1px);
}

.activity-stat-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-secondary);
}

.activity-stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.1;
}

.activity-stat-value-small {
    font-size: 18px;
}

.activity-stat-detail {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.3;
}

.activity-stat-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    margin-bottom: 4px;
    flex-shrink: 0;
}

.activity-stat-icon.stat-today {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.activity-stat-icon.stat-week {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.activity-stat-icon.stat-field {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.activity-stat-icon.stat-user {
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}

.activity-stat-icon.stat-day {
    background: rgba(236, 72, 153, 0.1);
    color: #ec4899;
}

/* ===================== */
/* Activity Heatmap      */
/* ===================== */
.activity-heatmap-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
}

.activity-heatmap-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 14px 0;
}

.activity-heatmap-wrapper {
    overflow-x: auto;
    padding-bottom: 4px;
}

.activity-heatmap-loading {
    padding: 24px 0;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 13px;
}

/* Month labels row - positioned above the grid columns */
.heatmap-months {
    display: flex;
    margin-left: 32px; /* align with grid (after day labels) */
    margin-bottom: 4px;
    height: 16px;
}

.heatmap-month {
    font-size: 10px;
    color: var(--color-text-muted);
    text-align: left;
    flex-shrink: 0;
    line-height: 16px;
}

/* Row container: day labels + grid side by side */
.heatmap-grid-row {
    display: flex;
    align-items: flex-start;
}

/* Day labels column (Mon, Wed, Fri) */
.heatmap-day-labels {
    display: flex;
    flex-direction: column;
    gap: 3px;
    margin-right: 6px;
    flex-shrink: 0;
    width: 26px;
}

.heatmap-day-label {
    font-size: 10px;
    color: var(--color-text-muted);
    height: 14px;
    line-height: 14px;
    text-align: right;
}

/* Grid: flex row of weekly columns */
.heatmap-grid {
    display: flex;
    gap: 3px;
}

.heatmap-column {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

/* Individual cells - consistent size + border-radius */
.heatmap-cell {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    cursor: pointer;
    position: relative;
    transition: transform 0.15s, box-shadow 0.15s;
}

.heatmap-cell:hover {
    transform: scale(1.3);
    z-index: 2;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.15);
}

.heatmap-cell-empty {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    cursor: default;
    background: transparent;
}

/* Green color scheme (GitHub-style) */
.heatmap-cell.level-0 {
    background: var(--color-bg);
    outline: 1px solid var(--color-border);
    outline-offset: -1px;
}

.heatmap-cell.level-1 {
    background: #d1fae5;
}

.heatmap-cell.level-2 {
    background: #6ee7b7;
}

.heatmap-cell.level-3 {
    background: #34d399;
}

.heatmap-cell.level-4 {
    background: #059669;
}

/* Hover outline for cells with data */
.heatmap-cell:hover:not(.heatmap-cell-empty) {
    outline: 1px solid var(--color-text-muted);
    outline-offset: -1px;
}

/* Tooltip */
.heatmap-tooltip {
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-text);
    color: var(--color-bg);
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 4px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 10;
}

.heatmap-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: var(--color-text);
}

.heatmap-cell:hover .heatmap-tooltip {
    opacity: 1;
}

/* Footer: summary + legend */
.heatmap-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 10px;
}

.heatmap-summary {
    font-size: 12px;
    color: var(--color-text-secondary);
}

.heatmap-legend {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--color-text-muted);
}

.heatmap-legend .heatmap-cell {
    width: 12px;
    height: 12px;
    display: inline-block;
    cursor: default;
    position: static;
}

.heatmap-legend .heatmap-cell:hover {
    transform: none;
    box-shadow: none;
}

.heatmap-legend-text {
    margin: 0 2px;
}

/* ===================== */
/* Timeline Sidebar      */
/* ===================== */
.activity-timeline-sidebar {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
}

.timeline-sidebar-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 16px;
}

.timeline-sidebar-hours {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 100px;
    gap: 2px;
}

.timeline-sidebar-hour {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    position: relative;
    min-width: 0;
}

/* Hourly density bars - rounded tops */
.timeline-sidebar-bar {
    width: 100%;
    background: linear-gradient(180deg, var(--color-primary), var(--color-primary-dark));
    border-radius: 4px 4px 0 0;
    transition: all 0.2s;
    cursor: pointer;
    min-height: 2px;
}

.timeline-sidebar-hour:hover .timeline-sidebar-bar {
    background: linear-gradient(180deg, var(--color-primary-hover), var(--color-primary));
    box-shadow: 0 -2px 8px rgba(79, 143, 247, 0.3);
    transform: scaleY(1.05);
    transform-origin: bottom;
}

.timeline-sidebar-hour-label {
    font-size: 9px;
    color: var(--color-text-muted);
    font-weight: 500;
}

.timeline-sidebar-hour:nth-child(4n+1) .timeline-sidebar-hour-label {
    opacity: 1;
}

.timeline-sidebar-hour:not(:nth-child(4n+1)) .timeline-sidebar-hour-label {
    opacity: 0.4;
}

/* ===================== */
/* Live Mode Toggle       */
/* ===================== */
.activity-live-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    color: var(--color-text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.activity-live-toggle:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
}

.activity-live-toggle.active {
    background: #059669;
    border-color: #059669;
    color: #fff;
    box-shadow: 0 0 12px rgba(5, 150, 105, 0.35), 0 0 4px rgba(5, 150, 105, 0.2);
}

.activity-live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-text-secondary);
    flex-shrink: 0;
    transition: all 0.25s ease;
}

.activity-live-toggle.active .activity-live-dot {
    background: #fff;
    box-shadow: 0 0 6px rgba(255, 255, 255, 0.6);
    animation: livePulse 2s ease-in-out infinite;
}

@keyframes livePulse {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7);
    }
    50% {
        opacity: 0.7;
        box-shadow: 0 0 0 5px rgba(255, 255, 255, 0);
    }
}

/* Sound Toggle */
.activity-sound-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.activity-sound-toggle:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.activity-sound-toggle.active {
    background: rgba(34, 197, 94, 0.1);
    border-color: #22c55e;
    color: #22c55e;
}

.activity-sound-toggle svg {
    flex-shrink: 0;
}

/* ===================== */
/* New Changes Badge      */
/* ===================== */
.activity-new-changes-bar {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s;
    animation: slideInFromTop 0.4s ease-out, newChangesPulse 2s ease-in-out infinite 0.4s;
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.4);
}

.activity-new-changes-bar.visible {
    display: flex;
}

.activity-new-changes-bar:hover {
    opacity: 0.95;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.5);
}

.activity-new-changes-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #fff;
    animation: newChangesDot 1.5s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes slideInFromTop {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes newChangesPulse {
    0%, 100% { box-shadow: 0 2px 12px rgba(59, 130, 246, 0.4); }
    50% { box-shadow: 0 4px 20px rgba(59, 130, 246, 0.6); }
}

@keyframes newChangesDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.9); }
}

/* New entry highlight animation */
.activity-timeline-entry.new-entry {
    animation: highlightEntry 1.5s ease-out;
}

@keyframes highlightEntry {
    0% {
        background: rgba(59, 130, 246, 0.15);
    }
    100% {
        background: transparent;
    }
}

/* ===================== */
/* Toolbar               */
/* ===================== */
.activity-toolbar {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 20px;
}

.activity-toolbar .toolbar-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.activity-toolbar .form-input,
.activity-toolbar .form-select {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 14px;
    transition: border-color 0.2s;
}

.activity-toolbar .form-input:focus,
.activity-toolbar .form-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.activity-toolbar .form-input[type="date"] {
    min-width: 150px;
}

.activity-toolbar .form-select {
    min-width: 180px;
}

.activity-toolbar .form-input[type="text"] {
    flex: 1;
    min-width: 200px;
}

/* View toggle */
.activity-view-toggle {
    display: flex;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
}

.activity-view-btn {
    padding: 7px 12px;
    border: none;
    background: var(--color-bg);
    color: var(--color-text-secondary);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
    border-right: 1px solid var(--color-border);
}

.activity-view-btn:last-child {
    border-right: none;
}

.activity-view-btn:hover {
    background: var(--color-surface-alt);
    color: var(--color-text);
}

.activity-view-btn.active {
    background: var(--color-primary);
    color: #fff;
}

/* Date range group */
.date-range-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.date-range-separator {
    color: var(--color-text-secondary);
    font-size: 14px;
    flex-shrink: 0;
}

/* Date preset buttons */
.date-presets {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.btn-preset {
    padding: 6px 12px;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    background: var(--color-bg);
    color: var(--color-text-secondary);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-preset:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-surface);
}

.btn-preset.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* Advanced filters button */
.btn-advanced-filters {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-bg);
    color: var(--color-text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}

.btn-advanced-filters:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-surface);
}

.btn-advanced-filters.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* Advanced filters panel */
.activity-advanced-panel {
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

.advanced-panel-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.advanced-filter-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
}

.activity-advanced-panel .form-select {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 14px;
    transition: border-color 0.2s;
    min-width: 160px;
}

.activity-advanced-panel .form-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Content area */
.activity-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
}

/* ===================== */
/* Timeline View         */
/* ===================== */
.activity-timeline-view {
    position: relative;
    padding: 0 20px 0 60px;
}

/* Connecting line: thinner, muted color */
.activity-timeline-view::before {
    content: '';
    position: absolute;
    left: 39px;
    top: 0;
    bottom: 0;
    width: 1.5px;
    background: var(--color-border);
    opacity: 0.6;
}

/* ===================== */
/* Collapsible Day Groups */
/* ===================== */
.activity-day-group {
    position: relative;
    margin-bottom: 0;
}

.activity-day-group:last-child {
    margin-bottom: 0;
}

/* Date group headers: sticky with background */
.activity-day-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 0 12px 0;
    cursor: pointer;
    user-select: none;
    position: sticky;
    top: 0;
    z-index: 3;
    background: var(--color-surface);
    margin-left: -20px;
    margin-right: -20px;
    padding-left: 20px;
    padding-right: 20px;
}

.activity-day-dot {
    position: absolute;
    left: -29px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--color-surface);
    box-shadow: 0 0 0 2px var(--color-primary);
    z-index: 1;
    flex-shrink: 0;
}

.activity-day-label {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text);
    flex: 1;
}

.activity-day-date {
    font-size: 12px;
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-left: 8px;
}

.activity-day-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 11px;
    font-size: 11px;
    font-weight: 600;
}

.activity-day-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: none;
    background: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: transform 0.25s;
    padding: 0;
}

.activity-day-toggle.collapsed {
    transform: rotate(-90deg);
}

.activity-day-items {
    overflow: hidden;
    transition: max-height 0.35s ease, opacity 0.25s ease;
    max-height: 5000px;
    opacity: 1;
}

.activity-day-items.collapsed {
    max-height: 0;
    opacity: 0;
}

/* ===================== */
/* Timeline Entry        */
/* ===================== */
.activity-timeline-entry {
    position: relative;
    padding: 10px 0 10px 0;
    margin-left: 0;
    border-radius: 8px;
    transition: background-color 0.15s;
}

/* Colored dots on timeline */
.activity-timeline-dot {
    position: absolute;
    left: -25px;
    top: 22px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-surface-alt);
    border: 3px solid var(--color-border);
    z-index: 1;
    transition: all 0.2s;
}

.activity-timeline-entry[data-type="edit"] .activity-timeline-dot {
    border-color: #3b82f6;
    background: #3b82f6;
}

.activity-timeline-entry[data-type="status"] .activity-timeline-dot {
    border-color: #f59e0b;
    background: #f59e0b;
}

.activity-timeline-entry[data-type="delete"] .activity-timeline-dot {
    border-color: #ef4444;
    background: #ef4444;
}

.activity-timeline-entry[data-type="create"] .activity-timeline-dot {
    border-color: #10b981;
    background: #10b981;
}

.activity-timeline-entry:hover .activity-timeline-dot {
    transform: scale(1.2);
    box-shadow: 0 0 8px currentColor;
}

/* Card-like hover with subtle shadow */
.activity-timeline-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 14px 16px;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.activity-timeline-card:hover {
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    transform: translateY(-1px);
}

.activity-timeline-card-top {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Activity type icon next to avatar */
.activity-timeline-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    flex-shrink: 0;
    background: var(--color-surface-alt);
}

.activity-timeline-entry[data-type="edit"] .activity-timeline-icon {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.activity-timeline-entry[data-type="status"] .activity-timeline-icon {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.activity-timeline-entry[data-type="delete"] .activity-timeline-icon {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.activity-timeline-entry[data-type="create"] .activity-timeline-icon {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.activity-timeline-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
    color: #fff;
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.activity-timeline-body {
    flex: 1;
    min-width: 0;
}

.activity-timeline-user {
    font-weight: 600;
    font-size: 13px;
    color: var(--color-text);
}

.activity-timeline-desc {
    font-size: 13px;
    color: var(--color-text);
    line-height: 1.4;
    margin-top: 2px;
}

.activity-timeline-time-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.activity-timeline-time {
    font-size: 11px;
    color: var(--color-text-secondary);
    white-space: nowrap;
    cursor: help;
}

.activity-timeline-expand-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-bg);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.activity-timeline-expand-btn:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.activity-timeline-expand-btn svg {
    transition: transform 0.2s;
}

.activity-timeline-expand-btn.expanded svg {
    transform: rotate(180deg);
}

/* Collapsible details section in timeline */
.activity-timeline-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.2s ease;
    opacity: 0;
}

.activity-timeline-details.expanded {
    max-height: 200px;
    opacity: 1;
}

/* ===================== */
/* Diff View             */
/* ===================== */
.activity-diff {
    margin-top: 12px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    font-family: 'SF Mono', 'Monaco', 'Cascadia Code', monospace;
    font-size: 12px;
    background: var(--color-bg);
}

.activity-diff-row {
    display: flex;
    align-items: stretch;
    line-height: 1.6;
}

.activity-diff-indicator {
    width: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
    font-size: 13px;
}

.activity-diff-text {
    flex: 1;
    padding: 6px 12px;
    word-break: break-word;
    min-width: 0;
}

.activity-diff-old {
    background: rgba(239, 68, 68, 0.08);
}

.activity-diff-old .activity-diff-indicator {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.activity-diff-old .activity-diff-text {
    color: #dc2626;
    text-decoration: line-through;
    text-decoration-color: rgba(220, 38, 38, 0.4);
}

.activity-diff-new {
    background: rgba(16, 185, 129, 0.08);
}

.activity-diff-new .activity-diff-indicator {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.activity-diff-new .activity-diff-text {
    color: #059669;
}

.activity-diff-empty {
    color: var(--color-text-secondary);
    font-style: italic;
}

/* ===================== */
/* Legacy List View      */
/* ===================== */
/* Activity groups */
.activity-group {
    border-bottom: 1px solid var(--color-border);
}

.activity-group:last-child {
    border-bottom: none;
}

/* Sticky group headers with subtle background */
.activity-group-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    background: var(--color-surface-alt);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 2;
    backdrop-filter: blur(8px);
}

.activity-group-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.activity-group-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 11px;
    font-size: 11px;
    font-weight: 600;
}

/* Activity entry (card-style) */
.activity-entry {
    border-bottom: 1px solid var(--color-border);
    transition: background-color 0.15s, box-shadow 0.15s;
}

.activity-entry:last-child {
    border-bottom: none;
}

.activity-entry:hover {
    background: var(--color-surface-alt);
    box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.06);
}

.activity-entry-main {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
}

/* Activity type icon */
.activity-entry-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    flex-shrink: 0;
    background: var(--color-surface-alt);
    color: var(--color-text-secondary);
}

.activity-type-icon {
    display: block;
}

.activity-type-edit {
    color: #3b82f6;
}

.activity-type-status {
    color: #f59e0b;
}

.activity-type-delete {
    color: #ef4444;
}

.activity-type-create {
    color: #10b981;
}

.activity-entry[data-type="edit"] .activity-entry-icon {
    background: rgba(59, 130, 246, 0.1);
}

.activity-entry[data-type="status"] .activity-entry-icon {
    background: rgba(245, 158, 11, 0.1);
}

.activity-entry[data-type="delete"] .activity-entry-icon {
    background: rgba(239, 68, 68, 0.1);
}

.activity-entry[data-type="create"] .activity-entry-icon {
    background: rgba(16, 185, 129, 0.1);
}

/* User avatar */
.activity-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    flex-shrink: 0;
    color: #fff;
    font-weight: 600;
}

.activity-avatar-initials {
    font-size: 12px;
    line-height: 1;
    letter-spacing: 0.5px;
}

/* Entry body */
.activity-entry-body {
    flex: 1;
    min-width: 0;
}

.activity-entry-top {
    font-size: 14px;
    color: var(--color-text);
    line-height: 1.5;
}

.activity-entry-user {
    font-weight: 600;
    color: var(--color-text);
}

.activity-entry-meta {
    margin-top: 2px;
}

.activity-entry-date {
    font-size: 12px;
    color: var(--color-text-secondary);
}

/* Field badge */
.activity-field-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    vertical-align: middle;
}

/* Import link */
.activity-import-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.activity-import-link:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

/* Expand button */
.activity-expand-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-bg);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.activity-expand-btn:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.activity-expand-btn svg {
    transition: transform 0.2s;
}

.activity-expand-btn.expanded svg {
    transform: rotate(180deg);
}

/* Expandable details */
.activity-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.2s ease;
    opacity: 0;
}

.activity-details.expanded {
    max-height: 200px;
    opacity: 1;
}

.activity-details-inner {
    padding: 0 20px 16px 78px;
}

.activity-value-change {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
}

.activity-value-old,
.activity-value-new {
    flex: 1;
    min-width: 0;
}

.activity-value-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

.activity-value-text {
    display: block;
    font-family: 'SF Mono', 'Monaco', 'Cascadia Code', monospace;
    font-size: 13px;
    color: var(--color-text);
    word-break: break-word;
}

.activity-value-old .activity-value-text {
    color: #ef4444;
}

.activity-value-new .activity-value-text {
    color: #10b981;
}

.activity-value-arrow {
    flex-shrink: 0;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
}

/* Total info bar */
.activity-total-info {
    text-align: center;
    padding: 12px 16px;
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* Loading more indicator */
.activity-load-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 20px;
    color: var(--color-text-secondary);
    font-size: 14px;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Value cells (legacy table support) */
.activity-value {
    color: var(--color-text);
    font-family: 'SF Mono', 'Monaco', 'Cascadia Code', monospace;
    font-size: 13px;
}

/* Grouped view */
.activity-grouped-view {
    padding: 0;
}

/* Empty state */
.activity-empty {
    padding: 60px 20px;
    text-align: center;
    color: var(--color-text-secondary);
}

.activity-empty p {
    margin: 0;
    font-size: 15px;
}

/* Error state */
.activity-error {
    padding: 40px 20px;
    text-align: center;
}

.activity-error p {
    margin: 0 0 8px 0;
    color: var(--color-text);
}

.activity-error .error-message {
    color: var(--color-danger);
    font-size: 14px;
}

/* Loading state */
.loading-state {
    padding: 60px 20px;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 15px;
}

/* Pagination (hidden by default for infinite scroll, kept for compatibility) */
.activity-pagination {
    margin-top: 20px;
    display: none;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.pagination {
    display: flex;
    gap: 6px;
    align-items: center;
}

.pagination-btn {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
}

.pagination-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-ellipsis {
    color: var(--color-text-secondary);
    padding: 0 4px;
}

.pagination-info {
    color: var(--color-text-secondary);
    font-size: 14px;
}

/* ===================== */
/* Dark theme support    */
/* ===================== */
[data-theme="dark"] .activity-toolbar {
    background: var(--color-surface);
    border-color: var(--color-border);
}

[data-theme="dark"] .activity-content {
    background: var(--color-surface);
    border-color: var(--color-border);
}

[data-theme="dark"] .activity-group-header {
    background: var(--color-surface-alt);
    border-bottom-color: var(--color-border);
}

[data-theme="dark"] .activity-entry {
    border-bottom-color: var(--color-border);
}

[data-theme="dark"] .activity-entry:hover {
    background: rgba(79, 143, 247, 0.06);
}

[data-theme="dark"] .activity-field-badge {
    background: var(--color-surface-alt);
    border-color: var(--color-border);
}

[data-theme="dark"] .activity-export-btn {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text);
}

[data-theme="dark"] .activity-export-btn:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

[data-theme="dark"] .btn-export-csv {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text);
}

[data-theme="dark"] .btn-export-csv:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

[data-theme="dark"] .btn-preset {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

[data-theme="dark"] .btn-preset:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

[data-theme="dark"] .btn-preset.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

[data-theme="dark"] .activity-entry-icon {
    background: var(--color-surface-alt);
}

[data-theme="dark"] .activity-entry[data-type="edit"] .activity-entry-icon {
    background: rgba(59, 130, 246, 0.15);
}

[data-theme="dark"] .activity-entry[data-type="status"] .activity-entry-icon {
    background: rgba(245, 158, 11, 0.15);
}

[data-theme="dark"] .activity-entry[data-type="delete"] .activity-entry-icon {
    background: rgba(239, 68, 68, 0.15);
}

[data-theme="dark"] .activity-entry[data-type="create"] .activity-entry-icon {
    background: rgba(16, 185, 129, 0.15);
}

[data-theme="dark"] .activity-expand-btn {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

[data-theme="dark"] .activity-expand-btn:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

[data-theme="dark"] .activity-value-change {
    background: var(--color-surface-alt);
    border-color: var(--color-border);
}

[data-theme="dark"] .activity-value-old .activity-value-text {
    color: #f87171;
}

[data-theme="dark"] .activity-value-new .activity-value-text {
    color: #34d399;
}

[data-theme="dark"] .activity-stat-card {
    background: var(--color-surface);
    border-color: var(--color-border);
}

[data-theme="dark"] .activity-stat-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .activity-heatmap-section {
    background: var(--color-surface);
    border-color: var(--color-border);
}

[data-theme="dark"] .heatmap-cell.level-0 {
    background: var(--color-bg);
    outline-color: var(--color-border);
}

[data-theme="dark"] .heatmap-cell.level-1 {
    background: #064e3b;
}

[data-theme="dark"] .heatmap-cell.level-2 {
    background: #047857;
}

[data-theme="dark"] .heatmap-cell.level-3 {
    background: #059669;
}

[data-theme="dark"] .heatmap-cell.level-4 {
    background: #10b981;
}

[data-theme="dark"] .heatmap-tooltip {
    background: var(--color-text);
    color: var(--color-bg);
}

[data-theme="dark"] .heatmap-tooltip::after {
    border-top-color: var(--color-text);
}

[data-theme="dark"] .activity-timeline-card {
    background: var(--color-surface-alt);
    border-color: var(--color-border);
}

[data-theme="dark"] .activity-timeline-card:hover {
    border-color: rgba(79, 143, 247, 0.4);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .activity-diff-old {
    background: rgba(239, 68, 68, 0.1);
}

[data-theme="dark"] .activity-diff-old .activity-diff-indicator {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

[data-theme="dark"] .activity-diff-old .activity-diff-text {
    color: #f87171;
}

[data-theme="dark"] .activity-diff-new {
    background: rgba(16, 185, 129, 0.1);
}

[data-theme="dark"] .activity-diff-new .activity-diff-indicator {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
}

[data-theme="dark"] .activity-diff-new .activity-diff-text {
    color: #34d399;
}

[data-theme="dark"] .activity-day-dot {
    border-color: var(--color-surface);
}

[data-theme="dark"] .activity-day-header {
    background: var(--color-surface);
}

[data-theme="dark"] .activity-view-btn {
    background: var(--color-surface);
    color: var(--color-text-secondary);
}

[data-theme="dark"] .activity-view-btn:hover {
    background: var(--color-surface-alt);
}

[data-theme="dark"] .activity-view-btn.active {
    background: var(--color-primary);
    color: #fff;
}

[data-theme="dark"] .activity-pagination .pagination-btn {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text);
}

[data-theme="dark"] .activity-pagination .pagination-btn:hover:not(:disabled) {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
}

[data-theme="dark"] .loading-spinner {
    border-color: var(--color-border);
    border-top-color: var(--color-primary);
}

/* ===================== */
/* Responsive design     */
/* ===================== */
@media (max-width: 1024px) {
    .activity-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .activity-page {
        padding: 16px;
    }

    .page-header-row {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .activity-header-actions {
        flex-direction: column;
        width: 100%;
    }

    .activity-export-btn {
        width: 100%;
        justify-content: center;
    }

    .btn-export-csv {
        width: 100%;
        justify-content: center;
    }

    .activity-stats {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .activity-stat-value {
        font-size: 22px;
    }

    .activity-toolbar .toolbar-row {
        flex-direction: column;
        align-items: stretch;
    }

    .date-range-group {
        flex-direction: column;
        gap: 8px;
    }

    .date-range-separator {
        display: none;
    }

    .date-presets {
        flex-wrap: wrap;
    }

    .activity-toolbar .form-input,
    .activity-toolbar .form-select {
        width: 100%;
        min-width: 0;
    }

    .activity-entry-main {
        padding: 12px 16px;
        gap: 10px;
    }

    .activity-entry-icon {
        width: 28px;
        height: 28px;
    }

    .activity-avatar {
        width: 30px;
        height: 30px;
    }

    .activity-avatar-initials {
        font-size: 11px;
    }

    .activity-entry-top {
        font-size: 13px;
    }

    .activity-details-inner {
        padding: 0 16px 12px 16px;
    }

    .activity-value-change {
        flex-direction: column;
        gap: 8px;
    }

    .activity-value-arrow {
        transform: rotate(90deg);
    }

    .activity-group-header {
        padding: 12px 16px;
    }

    .activity-timeline-view {
        padding-left: 44px;
    }

    .activity-timeline-view::before {
        left: 25px;
    }

    .activity-day-dot {
        left: -25px;
    }

    .activity-timeline-entry::before {
        left: -21px;
        width: 8px;
        height: 8px;
    }

    .heatmap-cell {
        width: 11px;
        height: 11px;
    }

    .heatmap-cell-empty {
        width: 11px;
        height: 11px;
    }

    .heatmap-day-labels {
        width: 22px;
    }

    .heatmap-months {
        margin-left: 28px;
    }

    .heatmap-legend .heatmap-cell {
        width: 10px;
        height: 10px;
    }

    .heatmap-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .activity-pagination {
        flex-direction: column;
        align-items: stretch;
    }

    .pagination {
        justify-content: center;
    }

    .pagination-info {
        text-align: center;
    }

    .activity-day-header {
        margin-left: -16px;
        margin-right: -16px;
        padding-left: 16px;
        padding-right: 16px;
    }
}

@media (max-width: 480px) {
    .activity-entry-icon {
        display: none;
    }

    .activity-stats {
        grid-template-columns: 1fr;
    }

    .activity-details-inner {
        padding-left: 16px;
    }

    .activity-timeline-view {
        padding-left: 34px;
    }

    .activity-timeline-view::before {
        left: 18px;
    }

    .activity-day-dot {
        left: -22px;
        width: 12px;
        height: 12px;
    }

    .activity-timeline-entry::before {
        left: -18px;
        width: 6px;
        height: 6px;
    }
}

/* Scrollable table on small screens (legacy) */
@media (max-width: 1024px) {
    .activity-content {
        overflow-x: auto;
    }
}