/* ===== VIEW TABS ===== */
.view-tabs {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.tab-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tab-btn:hover {
    color: var(--color-text-primary);
}

.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.view-content {
    display: none;
}

.view-content.active {
    display: block;
}

/* ===== CARDS VIEW (old timeline) ===== */
.timeline-container {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.timeline-day {
    margin-bottom: var(--spacing-xl);
}

.timeline-day-header {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
}

.timeline-entry {
    display: flex;
    align-items: stretch;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.timeline-entry::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 40px;
    bottom: -20px;
    width: 2px;
    background: var(--color-border);
}

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

.timeline-time-block {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    min-width: 50px;
    padding-top: var(--spacing-xs);
}

.timeline-time-start {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
}

.timeline-time-end {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.timeline-bar-wrapper {
    width: 100px;
    position: relative;
    padding-top: var(--spacing-xs);
}

.timeline-bar {
    height: 24px;
    background: var(--entry-color, #8b5cf6);
    border-radius: var(--radius-sm);
    min-width: 20px;
}

.timeline-details {
    flex: 1;
    background: var(--color-surface-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.timeline-project-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.timeline-project-name {
    font-weight: 600;
    color: var(--color-text-primary);
}

.timeline-duration-badge {
    background: var(--color-primary);
    color: white;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.timeline-task-title {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.timeline-meta {
    display: flex;
    gap: var(--spacing-xs);
}

.timeline-badge {
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.timeline-badge-dev { background: #555; color: white; }
.timeline-badge-design { background: #666; color: white; }
.timeline-badge-meeting { background: #4a4a4a; color: white; }
.timeline-badge-billable { background: var(--color-primary); color: white; }

.timeline-summary {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-xl);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-lg);
}

.timeline-total {
    color: var(--color-text-primary);
}

/* ═══════════════════════════════════════════════════════════
   GANTT TIMELINE VIEW — Modern horizontal timeline
   Colored bars on time tracks with detail cards below
   ═══════════════════════════════════════════════════════════ */

.gantt-timeline {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

/* ─── Header ─────────────────────────────────────────── */
.gantt-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: #fff;
}

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

.gantt-header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.gantt-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #1EBF32;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

[data-theme="dark"] .gantt-avatar {
    background: #1EBF32;
    color: #fff;
}

.gantt-user-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.gantt-user-name {
    font-weight: 600;
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.gantt-user-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.gantt-total-hours {
    font-weight: 600;
    color: var(--color-text-secondary);
}

.gantt-entries-count {
    color: var(--color-text-muted);
}

.gantt-header-right {
    display: flex;
    align-items: center;
}

.gantt-project-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm) var(--spacing-md);
}

.gantt-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.gantt-legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ─── Separator ──────────────────────────────────────── */
.gantt-separator {
    height: 1px;
    background: var(--color-border);
}

/* ─── Row Group (per date) ───────────────────────────── */
.gantt-row-group {
    background: #fff;
}

[data-theme="dark"] .gantt-row-group {
    background: var(--color-surface);
}

.gantt-row-group:hover {
    background: var(--color-surface-raised);
}

[data-theme="dark"] .gantt-row-group:hover {
    background: var(--color-surface-light);
}

/* ─── Date Row ───────────────────────────────────────── */
.gantt-date-row {
    display: grid;
    grid-template-columns: 120px 1fr 60px;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    min-height: 56px;
    gap: var(--spacing-md);
}

.gantt-date-label {
    display: flex;
    align-items: baseline;
    gap: 6px;
    font-size: var(--font-size-sm);
}

.gantt-date-day {
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1;
}

.gantt-date-weekday {
    font-weight: 500;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.03em;
}

.gantt-date-month {
    font-weight: 500;
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
}

/* ─── Track (the horizontal bar area) ────────────────── */
.gantt-track {
    position: relative;
    height: 46px;
    background: var(--color-border-light);
    border-radius: 6px;
    overflow: hidden;
}

[data-theme="dark"] .gantt-track {
    background: var(--color-surface-light);
}

/* ─── Hour Grid ──────────────────────────────────────── */
.gantt-hour-grid {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.gantt-hour-marker {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] .gantt-hour-marker {
    background: rgba(255, 255, 255, 0.06);
}

.gantt-hour-marker-label {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%) translateY(-100%);
    font-size: 0.65rem;
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    color: var(--color-text-secondary);
    white-space: nowrap;
    background: #fff;
    padding: 0 3px;
    z-index: 1;
}

[data-theme="dark"] .gantt-hour-marker-label {
    background: var(--color-surface);
    color: var(--color-text-muted);
}

.gantt-hour-label {
    position: absolute;
    top: -16px;
    left: -8px;
    font-size: 0.6rem;
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    color: var(--color-text-disabled);
    white-space: nowrap;
}

/* ─── Bars ────────────────────────────────────────────── */
.gantt-bar {
    position: absolute;
    top: 5px;
    bottom: 5px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity var(--transition-fast), filter var(--transition-fast);
    min-width: 4px;
    z-index: 2;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.gantt-bar:hover {
    filter: brightness(1.1);
    z-index: 3;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.gantt-bar-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* ─── Day Total ───────────────────────────────────────── */
.gantt-day-total {
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text-primary);
    text-align: right;
    white-space: nowrap;
}

/* ─── Day Summary (Total / Billable, tmetric-style) ───── */
.gantt-day-summary {
    display: flex;
    gap: var(--spacing-xl);
    padding: var(--spacing-sm) var(--spacing-lg);
    margin: 0 60px 0 120px;
    border-bottom: 1px solid var(--color-border);
}

.gantt-day-summary-block {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.gantt-day-summary-label {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.gantt-day-summary-value {
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-text-primary);
}

/* ─── Entry List (tmetric-style rows below the bar) ────── */
.gantt-entry-list {
    display: flex;
    flex-direction: column;
    margin: 0 60px var(--spacing-md) 120px;
}

.gantt-entry-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto auto auto 32px;
    align-items: center;
    gap: var(--spacing-md);
    padding: 12px var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: background var(--transition-fast);
}

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

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

.gantt-entry-row:hover {
    background: var(--color-surface-raised);
}

[data-theme="dark"] .gantt-entry-row:hover {
    background: var(--color-surface-light);
}

.gantt-entry-main {
    min-width: 0;
}

.gantt-entry-title {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

.gantt-entry-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: flex-end;
}

.gantt-entry-tag {
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 500;
    background: var(--color-surface-light);
    color: var(--color-text-secondary);
    white-space: nowrap;
}

[data-theme="dark"] .gantt-entry-tag {
    background: var(--color-surface-raised);
}

.gantt-entry-project {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.gantt-entry-project-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    flex-shrink: 0;
}

.gantt-entry-project-name {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
}

.gantt-entry-time {
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    white-space: nowrap;
}

.gantt-entry-duration {
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text-primary);
    white-space: nowrap;
    text-align: right;
}

.gantt-entry-action {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid transparent;
    background: transparent;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.75rem;
}

.gantt-entry-action:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

@media (max-width: 768px) {
    .gantt-entry-list,
    .gantt-day-summary {
        margin-left: 80px;
        margin-right: 48px;
    }
    .gantt-entry-row {
        grid-template-columns: minmax(0, 1fr) auto 32px;
        gap: var(--spacing-sm);
    }
    .gantt-entry-tags,
    .gantt-entry-project,
    .gantt-entry-time {
        display: none;
    }
}

/* ─── Detail Cards (below each date row) ──────────────── */
.gantt-detail-cards {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 0 var(--spacing-lg) var(--spacing-md) var(--spacing-lg);
    margin-left: 120px;
    margin-right: 60px;
}

.gantt-detail-card {
    display: grid;
    grid-template-columns: 4px 1fr auto;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
    transition: background var(--transition-fast);
}

.gantt-detail-card:last-child {
    border-bottom: none;
}

.gantt-detail-card:hover {
    background: var(--color-surface);
}

.gantt-card-color {
    width: 4px;
    height: 24px;
    border-radius: 2px;
    justify-self: center;
}

.gantt-card-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.gantt-card-project {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-primary);
}

.gantt-card-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.gantt-card-title {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gantt-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.gantt-card-time {
    display: flex;
    align-items: center;
    gap: 4px;
}

.gantt-card-time i {
    font-size: 0.55rem;
}

.gantt-card-hours {
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.gantt-card-badge {
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 0.6rem;
    font-weight: 600;
}

.gantt-badge-billable {
    background: rgba(16, 185, 129, 0.15);
    color: #10B981;
}

[data-theme="dark"] .gantt-badge-billable {
    background: rgba(16, 185, 129, 0.2);
    color: #34D399;
}

.gantt-card-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.gantt-card-edit {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.gantt-card-edit:hover {
    color: var(--color-text-primary);
    background: var(--color-surface-light);
    border-color: var(--color-border);
}

.gantt-card-edit i {
    font-size: 0.65rem;
}

/* ─── Summary Bar ─────────────────────────────────────── */
.gantt-summary-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--color-surface);
}

.gantt-summary-label {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
}

.gantt-summary-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.gantt-summary-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.gantt-summary-value {
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-text-primary);
}

.gantt-summary-desc {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

/* ─── Tooltip ─────────────────────────────────────────── */
.gantt-tooltip {
    position: fixed;
    z-index: 10000;
    background: #374151;
    color: #fff;
    border-radius: 6px;
    padding: 8px 12px;
    font-size: var(--font-size-xs);
    pointer-events: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    max-width: 250px;
}

.gantt-tooltip-project {
    font-weight: 600;
    margin-bottom: 2px;
}

.gantt-tooltip-title {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 4px;
}

.gantt-tooltip-meta {
    display: flex;
    gap: 8px;
    color: rgba(255, 255, 255, 0.6);
}

/* ─── Day Navigation Bar ──────────────────────────────── */
.gantt-day-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-surface-raised);
    border-bottom: 1px solid var(--color-border);
}

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

.gantt-day-nav-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.8rem;
}

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

.gantt-day-nav-btn:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.gantt-day-nav-center {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.gantt-day-today-btn {
    padding: 5px 14px;
    border-radius: 20px;
    border: 1px solid var(--color-primary);
    background: transparent;
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.gantt-day-today-btn:hover {
    background: var(--color-primary);
    color: #fff;
}

.gantt-day-today-btn.is-today {
    background: var(--color-primary);
    color: #fff;
    pointer-events: none;
}

.gantt-day-date-display {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.gantt-day-weekday {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
}

.gantt-day-num {
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1;
}

.gantt-day-month {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

.gantt-day-year {
    font-size: var(--font-size-xs);
    color: var(--color-text-disabled);
    font-weight: 400;
}

/* ─── Date Picker (styled native input) ───────────────── */
.gantt-date-picker {
    appearance: none;
    -webkit-appearance: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    padding-right: 32px;
    font-size: var(--font-size-sm);
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    color: var(--color-text-primary);
    background: var(--color-surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='%23888' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 0a.5.5 0 0 1 .5.5V1h8V.5a.5.5 0 0 1 1 0V1h1.5A1.5 1.5 0 0 1 16 2.5v12a1.5 1.5 0 0 1-1.5 1.5h-13A1.5 1.5 0 0 1 0 14.5v-12A1.5 1.5 0 0 1 1.5 1H3V.5a.5.5 0 0 1 .5-.5zM1 4v10.5a.5.5 0 0 0 .5.5h13a.5.5 0 0 0 .5-.5V4H1z'/%3E%3C/svg%3E") no-repeat right 10px center;
    background-size: 14px;
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    min-width: 130px;
}

[data-theme="dark"] .gantt-date-picker {
    background-color: var(--color-surface);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='%23aaa' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 0a.5.5 0 0 1 .5.5V1h8V.5a.5.5 0 0 1 1 0V1h1.5A1.5 1.5 0 0 1 16 2.5v12a1.5 1.5 0 0 1-1.5 1.5h-13A1.5 1.5 0 0 1 0 14.5v-12A1.5 1.5 0 0 1 1.5 1H3V.5a.5.5 0 0 1 .5-.5zM1 4v10.5a.5.5 0 0 0 .5.5h13a.5.5 0 0 0 .5-.5V4H1z'/%3E%3C/svg%3E");
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

.gantt-date-picker:hover {
    border-color: var(--color-primary);
}

.gantt-date-picker:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(71, 126, 247, 0.12);
}

.gantt-date-picker::-webkit-calendar-picker-indicator {
    opacity: 0;
    cursor: pointer;
    width: 24px;
    height: 24px;
}

/* ─── Empty Day Track (no entries) ─────────────────────── */
.gantt-empty-day-msg {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-left: 120px;
    margin-right: 60px;
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    font-style: italic;
}

.gantt-empty-day-msg i {
    color: var(--color-text-disabled);
}

@media (max-width: 768px) {
    .gantt-day-nav {
        padding: var(--spacing-sm);
    }
    .gantt-day-nav-center {
        gap: var(--spacing-sm);
    }
    .gantt-day-num {
        font-size: var(--font-size-lg);
    }
    .gantt-date-picker {
        min-width: 100px;
        font-size: 0.65rem;
    }
    .gantt-empty-day-msg {
        margin-left: 80px;
        margin-right: 48px;
    }
}

/* ─── Period Range Switcher ──────────────────────────── */
.gantt-period-switcher {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-xl);
    background: #fff;
}

[data-theme="dark"] .gantt-period-switcher {
    background: var(--color-surface);
}

.gantt-period-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.75rem;
}

.gantt-period-btn:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.gantt-period-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1px;
    min-width: 200px;
}

.gantt-period-label {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text-primary);
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
}

.gantt-period-sub {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ─── Hour Ruler (visible time labels above tracks) ── */
.gantt-hour-ruler {
    display: grid;
    grid-template-columns: 120px 1fr 60px;
    align-items: stretch;
    padding: 0 var(--spacing-lg);
    height: 28px;
    background: #fff;
}

[data-theme="dark"] .gantt-hour-ruler {
    background: var(--color-surface);
}

.gantt-ruler-spacer {
    /* matches date label column */
}

.gantt-ruler-total-spacer {
    /* matches day total column */
}

.gantt-ruler-track {
    position: relative;
    height: 100%;
}

.gantt-ruler-tick {
    position: absolute;
    top: 12px;
    bottom: 0;
    width: 1px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.gantt-ruler-tick::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 1px;
    height: 6px;
    background: var(--color-border);
}

.gantt-ruler-label {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%) translateY(-100%);
    font-size: 0.65rem;
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    color: var(--color-text-secondary);
    white-space: nowrap;
    background: #fff;
    padding: 0 3px;
    z-index: 1;
}

[data-theme="dark"] .gantt-ruler-label {
    background: var(--color-surface);
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .gantt-hour-ruler {
        grid-template-columns: 80px 1fr 48px;
        padding: 0 var(--spacing-sm);
    }
    .gantt-ruler-label {
        font-size: 0.55rem;
    }
    .gantt-period-info {
        min-width: 150px;
    }
}

/* ─── Track Hover Indicator ────────────────────────── */
.gantt-track-hover-indicator {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 0;
    background: rgba(0, 0, 0, 0.10);
    border-radius: 3px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 80ms ease, left 60ms ease, width 60ms ease;
    z-index: 1;
}

[data-theme="dark"] .gantt-track-hover-indicator {
    background: rgba(255, 255, 255, 0.10);
}

.gantt-track-clickable:hover ~ .gantt-track-hover-indicator,
.gantt-track:hover .gantt-track-hover-indicator.is-visible {
    opacity: 1;
}

/* ─── Clickable Track (for booking) ─────────────────── */
.gantt-track-clickable {
    position: absolute;
    inset: 0;
    cursor: crosshair;
    z-index: 1;
}

.gantt-track-clickable::after {
    content: '+';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    opacity: 0;
    transition: opacity var(--transition-fast);
    pointer-events: none;
}

.gantt-track:hover .gantt-track-clickable::after {
    opacity: 0.6;
}

.gantt-track-clickable:hover::after {
    opacity: 1 !important;
}

/* ─── Responsive ──────────────────────────────────────── */
@media (max-width: 768px) {
    .gantt-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }

    .gantt-project-legend {
        gap: var(--spacing-xs) var(--spacing-sm);
    }

    .gantt-date-row {
        grid-template-columns: 80px 1fr 48px;
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }

    .gantt-detail-cards {
        margin-left: 80px;
        margin-right: 48px;
        padding: 0 var(--spacing-sm) var(--spacing-sm) var(--spacing-sm);
    }

    .gantt-hour-label {
        display: none;
    }

    .gantt-summary-bar {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }

    .gantt-summary-stats {
        width: 100%;
        justify-content: space-between;
    }
}

/* ═══════════════════════════════════════════════════════════
   TIMELINE MODALS (booking & quick-edit popups)
   ═══════════════════════════════════════════════════════════ */

.tl-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1050;
    align-items: center;
    justify-content: center;
}

.tl-modal-overlay.show {
    display: flex;
}

.tl-modal {
    background: #fff;
    border-radius: var(--radius-lg);
    max-width: 480px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .tl-modal {
    background: var(--color-surface);
}

.tl-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.tl-modal-header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.tl-modal-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
}

.tl-modal-icon-add {
    background: rgba(71, 126, 247, 0.15);
    color: #477EF7;
}

.tl-modal-icon-edit {
    background: rgba(245, 158, 75, 0.15);
    color: #F5A623;
}

.tl-modal-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
}

.tl-modal-close {
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.tl-modal-close:hover {
    background: var(--color-surface-light);
    color: var(--color-text-primary);
}

.tl-modal-body {
    padding: var(--spacing-lg);
}

.tl-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.tl-form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tl-form-group label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
}

.tl-form-group input,
.tl-form-group select,
.tl-form-group textarea {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: var(--color-surface);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.tl-form-group input:focus,
.tl-form-group select:focus,
.tl-form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(71, 126, 247, 0.12);
}

.tl-form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.tl-form-span {
    grid-column: 1 / -1;
}

.tl-check-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.tl-check-label input {
    width: 16px;
    height: 16px;
}

.tl-modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-surface-raised);
}

[data-theme="dark"] .tl-modal-footer {
    background: var(--color-surface-light);
}

.tl-modal-footer-right {
    display: flex;
    gap: var(--spacing-sm);
}

.tl-btn {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.tl-btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}

.tl-btn-ghost:hover {
    background: var(--color-surface-light);
    color: var(--color-text-primary);
}

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

.tl-btn-primary:hover {
    filter: brightness(1.1);
}

.tl-btn-danger {
    background: transparent;
    color: #e53e3e;
    border-color: #feb2b2;
}

.tl-btn-danger:hover {
    background: #fff5f5;
}

[data-theme="dark"] .tl-btn-danger:hover {
    background: rgba(229, 62, 62, 0.1);
}

/* ─── Duration display (auto-calculated) ──────────────── */
.tl-duration-row {
    flex-direction: column;
}

.tl-duration-display {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    padding: 8px 12px;
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-variant-numeric: tabular-nums;
}

[data-theme="dark"] .tl-duration-display {
    background: var(--color-surface-light);
}

#book-duration-display,
#edit-duration-display {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
}

.tl-duration-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-family: var(--font-family-base);
    font-weight: 400;
}

/* ─── datetime-local inputs ───────────────────────────── */
.tl-form-group input[type="datetime-local"] {
    width: 100%;
}

/* ─── Toast notification ───────────────────────────────── */
.tl-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: #1a1a1a;
    color: #fff;
    padding: 12px 20px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: 1060;
    animation: tl-toast-in 0.3s ease;
}

.tl-toast-icon {
    color: #10B981;
}

.tl-toast-error .tl-toast-icon {
    color: #e53e3e;
}

.tl-toast-success .tl-toast-icon {
    color: #10B981;
}

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