.stf-gantt {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    color: var(--gantt-text);
}

/* ── Theme variables ─────────────────────────────────────────────────────── */
.stf-gantt {
    --gantt-bg: var(--mud-palette-background, #fbfcfe);
    --gantt-bg-alt: var(--mud-palette-surface, #ffffff);
    --gantt-text: var(--mud-palette-text-primary, #0f172a);
    --gantt-text-muted: var(--mud-palette-text-secondary, #64748b);
    --gantt-text-dim: var(--mud-palette-text-disabled, #94a3b8);
    --gantt-border: var(--mud-palette-lines-default, #e2e8f0);
    --gantt-grid: var(--mud-palette-lines-default, #e5e9f0);
    --gantt-surface: var(--mud-palette-surface, #f8fafc);
    --gantt-shadow: rgba(15, 23, 42, 0.08);
    --gantt-accent: var(--mud-palette-primary, #2563eb);
    --gantt-accent-soft: rgba(99, 102, 241, 0.06);
    --gantt-accent-medium: rgba(99, 102, 241, 0.12);
    --gantt-pair-bg: transparent;
    --gantt-pair-hover-bg: var(--gantt-accent-soft);
    --gantt-pair-selected-bg: var(--gantt-accent-medium);
    --gantt-row-separator: var(--mud-palette-lines-default, #e2e8f0);
    --gantt-row-label: var(--mud-palette-text-primary, #0f172a);
    --gantt-bar-stroke: var(--mud-palette-text-primary, rgba(0,0,0,0.22));
    --gantt-milestone: #f59e0b;
    --gantt-milestone-label: #b45309;
    --gantt-now-line: #ef4444;
}

/* ── Stats cards (premium) ──────────────────────────────────────────────── */
.stf-gantt__stats {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.stf-gantt__stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 96px;
    padding: 10px 16px;
    border-radius: 12px;
    background: linear-gradient(180deg, var(--gantt-bg-alt) 0%, var(--gantt-surface) 100%);
    border: 1px solid var(--gantt-border);
    box-shadow: 0 1px 3px var(--gantt-shadow), 0 4px 12px var(--gantt-shadow);
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.3s ease, border-color 0.3s ease;
}

.stf-gantt__stat:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.1), 0 12px 26px rgba(15, 23, 42, 0.08);
}

.stf-gantt__stat-icon {
    display: inline-flex;
    color: var(--gantt-text-muted);
    margin-bottom: 3px;
    transition: color 0.3s ease;
}

.stf-gantt__stat-icon svg { display: block; }

.stf-gantt__stat--total .stf-gantt__stat-icon { color: #2563eb; }
.stf-gantt__stat--late .stf-gantt__stat-icon { color: #dc2626; }
.stf-gantt__stat--ontime .stf-gantt__stat-icon { color: #16a34a; }
.stf-gantt__stat--rate .stf-gantt__stat-icon { color: #2563eb; }

.stf-gantt__stat-value {
    font-size: 20px;
    font-weight: 800;
    color: var(--gantt-text);
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
    transition: color 0.3s ease;
}

.stf-gantt__stat-label {
    font-size: 10px;
    color: var(--gantt-text-muted);
    margin-top: 3px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    transition: color 0.3s ease;
}

.stf-gantt__stat--total .stf-gantt__stat-value { color: #2563eb; }
.stf-gantt__stat--late .stf-gantt__stat-value { color: #dc2626; }
.stf-gantt__stat--ontime .stf-gantt__stat-value { color: #16a34a; }
.stf-gantt__stat--rate .stf-gantt__stat-value {
    background: linear-gradient(135deg, #2563eb 20%, #06b6d4 90%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ── Toolbar ────────────────────────────────────────────────────────────── */
.stf-gantt__toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    justify-content: space-between;
}

.stf-gantt__toolbar-group {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    background: var(--gantt-surface);
    border-radius: 999px;
    padding: 4px 10px;
    transition: background 0.3s ease;
}

.stf-gantt__search {
    padding: 6px 12px;
    border: 1px solid var(--gantt-border);
    border-radius: 8px;
    font-size: 13px;
    min-width: 220px;
    background: var(--gantt-bg-alt);
    color: var(--gantt-text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.3s ease, color 0.3s ease;
}

.stf-gantt__search:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.stf-gantt__btn {
    padding: 6px 10px;
    border: 1px solid var(--gantt-border);
    border-radius: 8px;
    background: var(--gantt-bg-alt);
    font-size: 13px;
    cursor: pointer;
    color: var(--gantt-text);
    transition: all 0.16s ease, background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
    box-shadow: 0 1px 2px var(--gantt-shadow);
}

.stf-gantt__btn:hover {
    background: #fff;
    border-color: #94a3b8;
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(15, 23, 42, 0.12);
}

.stf-gantt__btn:active { transform: translateY(0); }

.stf-gantt__btn--active { background: #2563eb; color: #fff; border-color: #2563eb; }
.stf-gantt__btn--active:hover { background: #1d4ed8; border-color: #1d4ed8; }

.stf-gantt__btn--round {
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    line-height: 1;
}

.stf-gantt__select {
    padding: 6px 8px;
    border: 1px solid var(--gantt-border);
    border-radius: 8px;
    font-size: 13px;
    background: var(--gantt-bg-alt);
    color: var(--gantt-text);
    cursor: pointer;
    box-shadow: 0 1px 2px var(--gantt-shadow);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.3s ease, color 0.3s ease;
}

.stf-gantt__select:hover { border-color: #94a3b8; }
.stf-gantt__select:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.stf-gantt__zoom {
    font-size: 13px;
    font-weight: 700;
    color: var(--gantt-text);
    min-width: 52px;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

/* ── Área de scroll ─────────────────────────────────────────────────────── */
.stf-gantt__scroll {
    overflow: auto;
    border: 1px solid var(--gantt-border);
    border-radius: 10px;
    background: var(--gantt-bg);
    max-height: 72vh;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 #f1f5f9;
    display: flex;
    flex-wrap: nowrap;
    align-items: flex-start;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.stf-gantt__scroll::-webkit-scrollbar { width: 10px; height: 10px; }
.stf-gantt__scroll::-webkit-scrollbar-track { background: #f1f5f9; border-radius: 8px; }
.stf-gantt__scroll::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 8px;
    border: 2px solid #f1f5f9;
}
.stf-gantt__scroll::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

.stf-gantt__canvas {
    position: relative;
}

.stf-gantt__chart-area {
    min-width: 0;
    flex-shrink: 0;
}

.stf-gantt__svg {
    display: block;
}

.stf-gantt__svg-bg {
    fill: var(--gantt-bg);
    transition: fill 0.3s ease;
}

/* ── Grid, separators, milestones, now line (theme-aware) ──────────────── */
.stf-gantt__grid-line { stroke: var(--gantt-grid, #e5e9f0); }
.stf-gantt__row-separator { stroke: var(--gantt-row-separator, #e2e8f0); }
.stf-gantt__milestone-line { stroke: var(--gantt-milestone, #f59e0b); }
.stf-gantt__now-line { stroke: var(--gantt-now-line, #ef4444); }
.stf-gantt__now-dot { fill: var(--gantt-now-line, #ef4444); }

.stf-gantt__row-label {
    dominant-baseline: middle;
}

.stf-gantt__now-label {
    user-select: none;
    pointer-events: none;
}

.stf-gantt__bar-label {
    dominant-baseline: middle;
    pointer-events: none;
    user-select: none;
}

/* ── Barras ─────────────────────────────────────────────────────────────── */
.stf-gantt__bar--hover {
    filter: brightness(1.12) drop-shadow(0 3px 6px rgba(15, 23, 42, 0.3));
}

.stf-gantt__bar-highlight {
    pointer-events: none;
}

/* ── Tooltip ────────────────────────────────────────────────────────────── */
.stf-gantt__tooltip {
    background: #0f172a;
    color: #e2e8f0;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 12px;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.5), 0 4px 12px rgba(15, 23, 42, 0.35);
    border: 1px solid #334155;
    overflow: hidden;
}

.stf-gantt__tooltip-accent {
    height: 3px;
    margin: -10px -12px 8px;
}

.stf-gantt__tooltip-accent--late { background: linear-gradient(90deg, #ef4444, #f97316); }
.stf-gantt__tooltip-accent--ok { background: linear-gradient(90deg, #22c55e, #06b6d4); }

.stf-gantt__tooltip-title {
    font-weight: 700;
    font-size: 13px;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.stf-gantt__tooltip-chip {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 20px;
    font-weight: 600;
}

.stf-gantt__tooltip-chip--late { background: #dc2626; color: #fff; }
.stf-gantt__tooltip-chip--ok { background: #16a34a; color: #fff; }

.stf-gantt__tooltip-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 2px 0;
}

.stf-gantt__tooltip-row span { color: #94a3b8; }
.stf-gantt__tooltip-row b { color: #f1f5f9; font-weight: 600; text-align: right; }

.stf-gantt__tooltip-fo {
    pointer-events: none;
}

/* ── Empty state ────────────────────────────────────────────────────────── */
.stf-gantt__empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 56px 16px;
    color: var(--gantt-text-muted);
    gap: 6px;
    text-align: center;
    border: 1px dashed var(--gantt-border);
    border-radius: 12px;
    background: linear-gradient(180deg, var(--gantt-bg-alt) 0%, var(--gantt-surface) 100%);
    transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.stf-gantt__empty-icon {
    font-size: 44px;
    animation: stf-gantt-pulse 2.4s ease-in-out infinite;
}

@keyframes stf-gantt-pulse {
    0%, 100% { opacity: 0.55; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.06); }
}

/* ── Overlay antes/depois (decisões rápidas) ─────────────────────────────── */
.stf-gantt__overlay { pointer-events: none; }

.stf-gantt__overlay rect {
    fill: rgba(249, 115, 22, 0.08);
}

.stf-gantt__overlay-label {
    fill: #c2410c;
    font-weight: 500;
    user-select: none;
}

/* ── Waterfall financeiro ────────────────────────────────────────────────── */
.stf-waterfall {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    color: var(--gantt-text, #0f172a);
    overflow: visible;
    width: 100%;
}

.stf-waterfall__zero-line { stroke: var(--gantt-row-separator, #cbd5e1); }

.stf-waterfall__svg { width: 100%; height: auto; }

.stf-waterfall__labels {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 6px 14px;
}

.stf-waterfall__label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--gantt-text);
    transition: color 0.3s ease;
}

.stf-waterfall__label-dot {
    width: 10px;
    height: 10px;
    border-radius: 3px;
    flex: none;
}

.stf-waterfall__label-text {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.stf-waterfall__legend {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 11px;
    color: var(--gantt-text-muted);
    transition: color 0.3s ease;
}

.stf-waterfall__legend-item { display: inline-flex; align-items: center; gap: 5px; }
.stf-waterfall__legend-item i { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }

/* ── Coluna de recursos congelada (labels) ─────────────────────────────── */
.stf-gantt__date-header {
    position: sticky;
    top: 0;
    z-index: 8;
    background: linear-gradient(180deg, var(--gantt-bg-alt) 0%, var(--gantt-surface) 100%);
    border-bottom: 1px solid var(--gantt-border);
    box-shadow: 0 2px 6px var(--gantt-shadow);
    flex: none;
    overflow: hidden;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.stf-gantt__date-label {
    position: absolute;
    top: 0;
    font-size: 11px;
    font-weight: 600;
    color: var(--gantt-text-muted);
    white-space: nowrap;
    user-select: none;
    pointer-events: none;
    transition: color 0.3s ease;
}

.stf-gantt__labels {
    position: sticky;
    left: 0;
    z-index: 5;
    flex: none;
    background: linear-gradient(180deg, var(--gantt-bg-alt) 0%, var(--gantt-surface) 100%);
    border-right: 2px solid var(--gantt-border);
    box-shadow: 2px 0 6px var(--gantt-shadow);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.stf-gantt__labels-header {
    position: sticky;
    top: 0;
    left: 0;
    z-index: 12;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 10px;
    box-sizing: border-box;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--gantt-text-dim);
    border-bottom: 1px solid var(--gantt-border);
    border-right: 2px solid var(--gantt-border);
    background: linear-gradient(180deg, var(--gantt-bg-alt) 0%, var(--gantt-surface) 100%);
    user-select: none;
    transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.stf-gantt__label {
    position: absolute;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 10px;
    font-size: 12px;
    font-weight: 600;
    color: var(--gantt-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-sizing: border-box;
    transition: color 0.25s ease, opacity 0.25s ease;
}

.stf-gantt__label-name {
    display: inline-block;
    transition: transform 0.2s ease;
}

.stf-gantt__pair-bg--hover + .stf-gantt__svg .stf-gantt__label--grouped .stf-gantt__label-name,
.stf-gantt__pair-bg--selected ~ .stf-gantt__label--grouped .stf-gantt__label-name {
    color: var(--gantt-accent);
}

/* Bar group transitions (smooth hover/select) */
.stf-gantt__bar {
    transition: opacity 0.2s ease;
}

.stf-gantt__bar > rect {
    transition: stroke 0.2s ease, stroke-width 0.2s ease, opacity 0.2s ease;
}

/* ── Highlight da cadeia da entrega ────────────────────────────────────── */
.stf-gantt__bar--chain rect:first-child {
    filter: drop-shadow(0 0 4px rgba(15, 23, 42, 0.45));
}

.stf-gantt__bar--dim { pointer-events: none; }

/* ── Pair grouping (modo comparação antes/depois) ──────────────────────── */
.stf-gantt__pair-bg {
    fill: var(--gantt-pair-bg, transparent);
    transition: fill 0.25s ease, opacity 0.25s ease;
    pointer-events: none;
}

.stf-gantt__pair-bg--hover {
    fill: var(--gantt-pair-hover-bg, rgba(99, 102, 241, 0.06));
}

.stf-gantt__pair-bg--selected {
    fill: var(--gantt-pair-selected-bg, rgba(99, 102, 241, 0.10));
}

/* ── Grouped label (par antes/depois) — centralizado via line-height ──── */
.stf-gantt__label--grouped {
    padding-right: 10px;
    text-align: right;
    white-space: nowrap;
}

.stf-gantt__label-name {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--gantt-text);
}

.stf-gantt__bar--baseline {
    opacity: 1;
}

.stf-gantt__bar--baseline rect:not([stroke-dasharray]) {
    stroke-dasharray: 3 2;
}

.stf-gantt__bar--baseline .stf-gantt__bar-highlight {
    opacity: 0.15 !important;
}

/* ── Editor de cores por entrega ───────────────────────────────────────── */
.stf-gantt__colors {
    position: relative;
}

.stf-gantt__colors summary {
    list-style: none;
    cursor: pointer;
    user-select: none;
}

.stf-gantt__colors summary::-webkit-details-marker { display: none; }

.stf-gantt__colors-list {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    z-index: 40;
    max-height: 320px;
    overflow-y: auto;
    background: var(--gantt-bg-alt);
    border: 1px solid var(--gantt-border);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
    padding: 8px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 4px 10px;
    min-width: 320px;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.stf-gantt__color-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--gantt-text);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 6px;
    transition: color 0.3s ease;
}

.stf-gantt__color-item:hover { background: #f1f5f9; }

.stf-gantt__color-item input[type="color"] {
    width: 26px;
    height: 22px;
    border: 1px solid #cbd5e1;
    border-radius: 5px;
    padding: 1px;
    cursor: pointer;
    background: #fff;
    flex: none;
}

.stf-gantt__color-item span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ── Comparison banner (resultado da decisão rápida) ──────────────────── */
.stf-comparison-banner {
    background: var(--mud-palette-surface, #ffffff);
    border: 1px solid var(--mud-palette-lines-default, #e2e8f0);
    border-radius: 12px;
    padding: 16px 20px;
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.08);
    margin-bottom: 16px;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.stf-comparison-kpi-card {
    background: var(--mud-palette-surface, #f8fafc);
    border: 1px solid var(--mud-palette-lines-default, #e2e8f0);
    border-radius: 12px;
    padding: 12px 16px;
    transition: background 0.3s ease, border-color 0.3s ease;
}

/* ── Context menu (right-click决策) ─────────────────────────────────────── */
.stf-gantt-contextmenu {
    position: fixed;
    z-index: 1000;
    width: 320px;
    background: var(--mud-palette-surface, #ffffff);
    border: 1px solid var(--mud-palette-lines-default, #e2e8f0);
    border-radius: 14px;
    box-shadow: 0 20px 60px rgba(15, 23, 42, 0.25), 0 8px 20px rgba(15, 23, 42, 0.12);
    overflow: hidden;
    animation: stf-gantt-contextmenu-in 0.15s ease-out;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    color: var(--mud-palette-text-primary, #0f172a);
    transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
    opacity: 1 !important;
}

.stf-gantt-contextmenu * {
    opacity: 1 !important;
}

@keyframes stf-gantt-contextmenu-in {
    from { opacity: 0; transform: scale(0.95) translateY(-4px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.stf-gantt-contextmenu__header {
    padding: 14px 16px 10px;
    background: var(--mud-palette-surface, #ffffff);
    border-bottom: 1px solid var(--mud-palette-lines-default, #e2e8f0);
    transition: background 0.3s ease, border-color 0.3s ease;
    opacity: 1 !important;
}

.stf-gantt-contextmenu__body {
    padding: 8px;
    background: var(--mud-palette-surface, #ffffff);
    opacity: 1 !important;
}

.stf-gantt-contextmenu__task-label {
    font-size: 14px;
    font-weight: 700;
    color: var(--mud-palette-text-primary, #0f172a);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
    transition: color 0.3s ease;
}

.stf-gantt-contextmenu__badge {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
}

.stf-gantt-contextmenu__badge--late { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
.stf-gantt-contextmenu__badge--ok { background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }

.stf-gantt-contextmenu__task-meta {
    font-size: 12px;
    color: var(--mud-palette-text-secondary, #64748b);
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
    transition: color 0.3s ease;
}

.stf-gantt-contextmenu__sep { color: #cbd5e1; }

.stf-gantt-contextmenu__section-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--mud-palette-text-disabled, #94a3b8);
    padding: 4px 8px 6px;
    transition: color 0.3s ease;
}

.stf-gantt-contextmenu__option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 12px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    color: var(--mud-palette-text-primary, #334155);
    font-weight: 500;
    text-align: left;
    transition: background 0.12s ease, color 0.3s ease;
    font-family: inherit;
}

.stf-gantt-contextmenu__option:hover {
    background: var(--mud-palette-action-hover, #f1f5f9);
    color: var(--mud-palette-text-primary, #0f172a);
}

.stf-gantt-contextmenu__option--danger {
    color: #dc2626;
}

.stf-gantt-contextmenu__option--danger:hover {
    background: #fef2f2;
    color: #b91c1c;
}

.stf-gantt-contextmenu__back {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border: none;
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    color: var(--mud-palette-text-secondary, #64748b);
    font-family: inherit;
    margin-bottom: 4px;
    transition: background 0.12s ease, color 0.3s ease;
}

.stf-gantt-contextmenu__back:hover {
    background: var(--mud-palette-action-hover, #f1f5f9);
    color: var(--mud-palette-text-primary, #334155);
}

.stf-gantt-contextmenu__close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--mud-palette-text-disabled, #94a3b8);
    transition: background 0.12s ease, color 0.3s ease;
}

.stf-gantt-contextmenu__close:hover {
    background: var(--mud-palette-action-hover, #f1f5f9);
    color: var(--mud-palette-text-primary, #334155);
}

/* ── Comparison stacked view ─────────────────────────────────────────────── */
.stf-comparison-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
}

.stf-comparison-divider::before,
.stf-comparison-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gantt-border), transparent);
}

.stf-comparison-divider__label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gantt-text-dim);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.3s ease;
}

.stf-comparison-divider__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.stf-comparison-divider__dot--before { background: #f97316; }
.stf-comparison-divider__dot--after { background: #2563eb; }

/* ── Comparison legend (premium) ─────────────────────────────────────────── */
.stf-comparison-legend {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 10px 16px;
    margin-bottom: 12px;
    background: var(--gantt-bg-alt);
    border: 1px solid var(--gantt-border);
    border-radius: 10px;
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.04);
    flex-wrap: wrap;
}

.stf-comparison-legend__item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.stf-comparison-legend__chip {
    width: 28px;
    height: 14px;
    border-radius: 4px;
    border: 1.2px solid;
    flex: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stf-comparison-legend__chip--before {
    background: rgba(99, 102, 241, 0.32);
    border-color: rgba(255, 255, 255, 0.35);
    border-style: dashed;
}

.stf-comparison-legend__chip--after {
    background: rgba(99, 102, 241, 0.78);
    border-color: rgba(0, 0, 0, 0.22);
    border-style: solid;
}

.stf-comparison-legend__label {
    font-size: 13px;
    font-weight: 700;
    color: var(--gantt-text);
    letter-spacing: 0.01em;
}

.stf-comparison-legend__hint {
    font-size: 11px;
    color: var(--gantt-text-muted);
    font-weight: 500;
    letter-spacing: 0.02em;
}

.stf-comparison-legend__divider {
    width: 1px;
    height: 22px;
    background: var(--gantt-border);
    flex: none;
}

.stf-comparison-legend:hover .stf-comparison-legend__chip {
    transform: translateY(-1px);
}