/* =============================================================================
   Planaut Gantt Chart — HTML/Canvas Hybrid
   ============================================================================= */

.gantt-shell {
    position: relative;
    border: 1px solid var(--dark-border-subtle);
    border-radius: 12px;
    background: var(--dark-surface-1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 400px;
    max-height: min(65vh, 600px);
}

/* Fullscreen: remove height cap so chart fills the viewport */
#gantt-expand-modal .gantt-shell {
    max-height: none;
    height: 100%;
    border: none;
    border-radius: 0;
}

/* --- Toolbar ------------------------------------------------------------- */
.gantt-toolbar {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--dark-border-subtle);
    background: rgba(255, 255, 255, 0.01);
    flex-shrink: 0;
}

.gantt-toolbar-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    flex-wrap: wrap;
}

.gantt-toolbar-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 6px 12px;
    flex-wrap: wrap;
}

.gantt-date-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.gantt-control-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--dark-text-secondary);
    white-space: nowrap;
}

.gantt-select-primary {
    border-color: rgba(59, 130, 246, 0.4) !important;
    background: rgba(59, 130, 246, 0.08) !important;
    color: #93C5FD !important;
    font-weight: 600 !important;
}

.gantt-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    justify-content: flex-end;
}

.gantt-legend {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 11px;
    color: var(--dark-text-secondary);
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.legend-item .dot {
    width: 10px;
    height: 10px;
    border-radius: 3px;
    display: inline-block;
}

.legend-item .dot.standard { background: #3B82F6; }
.legend-item .dot.critical { background: #EF4444; }
.legend-item .dot.done { background: #22C55E; }
.legend-item .dot.milestone { background: #A855F7; }

.gantt-summary {
    font-size: 11px;
    color: var(--dark-text-tertiary);
    display: flex;
    gap: 10px;
    align-items: center;
}

.gantt-actions {
    display: inline-flex;
    gap: 6px;
    align-items: center;
}

.gantt-btn {
    border: 1px solid var(--dark-border-subtle);
    background: rgba(59, 130, 246, 0.12);
    color: #93C5FD;
    border-radius: 6px;
    padding: 5px 10px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}

.gantt-btn:hover {
    background: rgba(59, 130, 246, 0.2);
}

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

.gantt-btn-ghost:hover {
    background: rgba(255, 255, 255, 0.06);
}

.gantt-btn.gantt-toggle.active {
    background: rgba(59, 130, 246, 0.35);
    color: #BFDBFE;
    border-color: rgba(59, 130, 246, 0.5);
}

.gantt-btn-zoom {
    width: 28px;
    padding: 5px;
    text-align: center;
    font-size: 14px;
    line-height: 1;
}

.gantt-zoom-label {
    font-size: 11px;
    color: var(--dark-text-secondary);
    min-width: 48px;
    text-align: center;
}

.gantt-select {
    appearance: none;
    border: 1px solid var(--dark-border-subtle);
    background: var(--dark-surface-2);
    color: var(--dark-text-secondary);
    border-radius: 6px;
    padding: 5px 8px;
    font-size: 11px;
    font-weight: 500;
    min-height: 28px;
    line-height: 1.1;
}

/* --- Frame --------------------------------------------------------------- */
.gantt-frame {
    display: grid;
    grid-template-columns: 360px 1fr;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* --- Task pane (left) ---------------------------------------------------- */
.gantt-task-pane {
    border-right: 1px solid var(--dark-border-subtle);
    background: var(--dark-surface-1);
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
}

.gantt-task-header {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--dark-surface-2);
    border-bottom: 1px solid var(--dark-border-subtle);
    display: grid;
    grid-template-columns: 72px 1fr 56px;
    gap: 8px;
    font-size: 11px;
    color: var(--dark-text-tertiary);
    padding: 8px 10px;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    flex-shrink: 0;
}

.gantt-task-rows {
    overflow-y: auto;
    overscroll-behavior-y: contain;
    flex: 1;
    scrollbar-width: thin;
    scrollbar-color: var(--dark-text-tertiary, #71717A) var(--dark-surface-2, #2A2A2E);
}

.gantt-task-rows::-webkit-scrollbar { width: 6px; }
.gantt-task-rows::-webkit-scrollbar-track { background: var(--dark-surface-2); }
.gantt-task-rows::-webkit-scrollbar-thumb { background: var(--dark-text-tertiary); border-radius: 3px; }

.gantt-task-row {
    width: 100%;
    border: 0;
    background: transparent;
    color: var(--dark-text-secondary);
    display: grid;
    grid-template-columns: 72px 1fr 56px;
    gap: 8px;
    text-align: left;
    padding: 8px 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    cursor: pointer;
    align-items: center;
    transition: background 0.1s;
    font-family: inherit;
    font-size: inherit;
}

.gantt-task-row:hover {
    background: rgba(255, 255, 255, 0.03);
}

.gantt-task-row.selected {
    background: rgba(59, 130, 246, 0.15);
    border-left: 2px solid var(--dark-accent, #3B82F6);
}

.gantt-task-row .task-id {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 11px;
    color: var(--dark-text-tertiary);
}

.gantt-task-row .task-name {
    font-size: 13px;
    color: var(--dark-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gantt-task-row .task-pct {
    font-size: 12px;
    color: var(--dark-text-secondary);
    text-align: right;
}

.gantt-task-row.is-critical .task-name {
    color: #FCA5A5;
}

.gantt-task-row.is-milestone .task-name {
    color: #C084FC;
}

/* --- Canvas pane (right) ------------------------------------------------- */
.gantt-canvas-pane {
    position: relative;
    overflow: auto;
    overscroll-behavior: contain;
    background: linear-gradient(180deg, #17181d 0%, #13141a 100%);
    scrollbar-width: thin;
    scrollbar-color: var(--dark-text-tertiary, #71717A) var(--dark-surface-2, #2A2A2E);
}

.gantt-canvas-pane::-webkit-scrollbar { width: 8px; height: 8px; }
.gantt-canvas-pane::-webkit-scrollbar-track { background: var(--dark-surface-2); }
.gantt-canvas-pane::-webkit-scrollbar-thumb { background: var(--dark-text-tertiary); border-radius: 4px; }
.gantt-canvas-pane::-webkit-scrollbar-thumb:hover { background: var(--dark-text-secondary); }

/* Scroll-area wrapper creates the full-timeline scrollable range.
   The canvas inside is sticky so it stays viewport-sized and
   redraws on scroll instead of being a massive bitmap. */
.gantt-canvas-scroll-area {
    position: relative;
    /* min-width/min-height set by JS to full timeline dimensions */
}

.gantt-canvas-pane canvas {
    display: block;
    position: sticky;
    top: 0;
    left: 0;
    z-index: 1;
}

/* --- Status bar ---------------------------------------------------------- */
.gantt-status-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    background: var(--dark-surface-2, #2A2A2E);
    border-bottom: 1px solid var(--dark-border-subtle);
    font-size: 11px;
    color: var(--dark-text-secondary, #A1A1AA);
    flex-shrink: 0;
    white-space: nowrap;
    overflow-x: auto;
}

.gantt-sep {
    color: var(--dark-border-default, #3A3A3F);
    opacity: 0.5;
}

.gantt-health-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 600;
    font-size: 11px;
    cursor: pointer;
}

.gantt-health-badge.is-disabled {
    cursor: default;
    opacity: 0.85;
}

.gantt-health-badge.green { background: rgba(34, 197, 94, 0.15); color: #22C55E; }
.gantt-health-badge.yellow { background: rgba(245, 158, 11, 0.15); color: #F59E0B; }
.gantt-health-badge.red { background: rgba(239, 68, 68, 0.15); color: #EF4444; }

.gantt-health-badge.status-green { background: rgba(34, 197, 94, 0.15); color: #22C55E; border-color: rgba(34, 197, 94, 0.35); }
.gantt-health-badge.status-yellow { background: rgba(245, 158, 11, 0.15); color: #F59E0B; border-color: rgba(245, 158, 11, 0.35); }
.gantt-health-badge.status-red { background: rgba(239, 68, 68, 0.15); color: #EF4444; border-color: rgba(239, 68, 68, 0.35); }
.gantt-health-badge.status-pending { background: rgba(113, 113, 122, 0.15); color: var(--dark-text-secondary); border-color: rgba(113, 113, 122, 0.35); }

.gantt-status-critical { color: #EF4444; font-weight: 600; }
.gantt-status-near-crit { color: #F59E0B; font-weight: 600; }

.gantt-status-metric {
    color: var(--dark-text-secondary, #A1A1AA);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    padding: 2px 8px;
}

.gantt-status-metric.critical {
    color: #EF4444;
    border-color: rgba(239, 68, 68, 0.35);
}

.gantt-status-metric.warning {
    color: #F59E0B;
    border-color: rgba(245, 158, 11, 0.35);
}

.gantt-status-metric.danger {
    color: #F87171;
    border-color: rgba(248, 113, 113, 0.35);
}

.gantt-health-popover {
    position: absolute;
    right: 12px;
    top: 74px;
    width: min(360px, calc(100% - 24px));
    max-height: 220px;
    overflow: auto;
    z-index: 20;
    background: #101117;
    border: 1px solid var(--dark-border-subtle);
    border-radius: 10px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
    padding: 10px;
}

.gantt-health-popover.hidden {
    display: none;
}

.gantt-health-popover-title {
    font-size: 12px;
    color: var(--dark-text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.gantt-health-popover-list {
    margin: 0;
    padding-left: 16px;
    display: grid;
    gap: 6px;
}

.gantt-health-popover-list li {
    color: var(--dark-text-secondary);
    font-size: 12px;
    line-height: 1.4;
}

/* --- Tooltip ------------------------------------------------------------- */
.gantt-tooltip {
    position: fixed;
    z-index: 9999;
    background: #1F2937;
    color: #F9FAFB;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 12px;
    pointer-events: none;
    max-width: 320px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    line-height: 1.5;
}

.gantt-tooltip.hidden {
    display: none;
}

.gantt-tooltip-name { font-weight: 600; margin-bottom: 4px; }
.gantt-tooltip-row { display: flex; justify-content: space-between; gap: 12px; font-size: 11px; }
.gantt-tooltip-label { color: #9CA3AF; }
.gantt-tooltip-hint { margin-top: 6px; font-size: 10px; color: #6B7280; font-style: italic; }

/* --- Hint ---------------------------------------------------------------- */
.gantt-hint {
    font-size: 11px;
    color: var(--dark-text-tertiary);
    padding: 8px 12px;
    border-top: 1px solid var(--dark-border-subtle);
    display: none; /* Hidden — replaced by status bar */
}

/* --- Responsive ---------------------------------------------------------- */
@media (max-width: 1100px) {
    .gantt-toolbar-top,
    .gantt-toolbar-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .gantt-controls,
    .gantt-actions {
        justify-content: flex-start;
    }

    .gantt-frame {
        grid-template-columns: 1fr;
    }

    .gantt-task-pane {
        border-right: 0;
        border-bottom: 1px solid var(--dark-border-subtle);
        max-height: 200px;
    }
}

@media (max-width: 640px) {
    .gantt-legend { display: none; }

    .gantt-toolbar-top,
    .gantt-toolbar-bottom {
        gap: 6px;
        padding: 6px 8px;
    }

    .gantt-status-bar {
        gap: 6px;
        padding: 4px 8px;
        font-size: 10px;
        flex-wrap: wrap;
    }

    .gantt-select,
    .gantt-btn {
        font-size: 10px;
        padding: 4px 6px;
    }

    .gantt-task-pane { max-height: 150px; }
}