/* ============================================================
   MANDA4 PROJECT MANAGER — Gantt Styles
   ============================================================ */

.m4-gantt {
  background: var(--m4-white);
  border-radius: var(--m4-radius-lg);
  border: 1px solid var(--m4-gray-200);
  box-shadow: var(--m4-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.m4-gantt-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--m4-sp-3);
  padding: var(--m4-sp-4) var(--m4-sp-5);
  border-bottom: 1px solid var(--m4-gray-200);
  background: var(--m4-gray-50);
  flex-wrap: wrap;
}

.m4-gantt-zoom {
  display: flex;
  align-items: center;
  gap: var(--m4-sp-1);
  background: var(--m4-white);
  border: 1px solid var(--m4-gray-200);
  border-radius: var(--m4-radius);
  padding: 2px;
}

.m4-gantt-zoom button {
  border: none;
  background: none;
  padding: 6px 12px;
  font-size: var(--m4-caption);
  font-weight: var(--m4-fw-semibold);
  color: var(--m4-gray-600);
  border-radius: calc(var(--m4-radius) - 2px);
  cursor: pointer;
  transition: all var(--m4-transition);
}

.m4-gantt-zoom button:hover {
  color: var(--m4-gray-900);
  background: var(--m4-gray-100);
}

.m4-gantt-zoom button.active {
  background: var(--m4-blue);
  color: var(--m4-white);
}

.m4-gantt-legend {
  display: flex;
  align-items: center;
  gap: var(--m4-sp-4);
  flex-wrap: wrap;
}

.m4-gantt-legend-item {
  display: inline-flex;
  align-items: center;
  gap: var(--m4-sp-2);
  font-size: var(--m4-caption);
  color: var(--m4-gray-600);
}

.m4-gantt-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

/* Container com scroll */
.m4-gantt-scroll {
  overflow: auto;
  flex: 1;
  position: relative;
  min-height: 400px;
}

.m4-gantt-canvas {
  position: relative;
  min-height: 100%;
}

/* Header de datas */
.m4-gantt-header {
  display: flex;
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--m4-white);
  border-bottom: 1px solid var(--m4-gray-200);
}

.m4-gantt-task-col {
  width: 320px;
  min-width: 320px;
  padding: 12px 16px;
  font-size: var(--m4-caption);
  font-weight: var(--m4-fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--m4-gray-500);
  border-right: 1px solid var(--m4-gray-200);
  background: var(--m4-gray-50);
  position: sticky;
  left: 0;
  z-index: 11;
}

.m4-gantt-timeline {
  display: flex;
  flex: 1;
}

.m4-gantt-time-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--m4-gray-100);
  font-size: var(--m4-caption);
  color: var(--m4-gray-500);
  padding: 8px 4px;
  white-space: nowrap;
}

/* Linhas */
.m4-gantt-row {
  display: flex;
  min-height: 44px;
  border-bottom: 1px solid var(--m4-gray-100);
  transition: background var(--m4-transition);
}

.m4-gantt-row:hover {
  background: var(--m4-gray-50);
}

.m4-gantt-row.m4-gantt-phase {
  background: var(--m4-gray-100);
  min-height: 40px;
}

.m4-gantt-row.m4-gantt-phase:hover {
  background: var(--m4-gray-200);
}

.m4-gantt-task-label {
  width: 320px;
  min-width: 320px;
  padding: 10px 16px;
  border-right: 1px solid var(--m4-gray-200);
  display: flex;
  align-items: center;
  gap: var(--m4-sp-2);
  position: sticky;
  left: 0;
  background: inherit;
  z-index: 5;
  font-size: var(--m4-body);
  color: var(--m4-gray-800);
}

.m4-gantt-phase .m4-gantt-task-label {
  font-weight: var(--m4-fw-bold);
  color: var(--m4-gray-900);
}

.m4-gantt-task-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.m4-gantt-task-actions {
  display: flex;
  align-items: center;
  gap: var(--m4-sp-1);
  opacity: 0;
  transition: opacity var(--m4-transition);
}

.m4-gantt-row:hover .m4-gantt-task-actions {
  opacity: 1;
}

/* Timeline body */
.m4-gantt-timeline-body {
  position: relative;
  flex: 1;
}

.m4-gantt-grid-lines {
  position: absolute;
  inset: 0;
  display: flex;
  pointer-events: none;
}

.m4-gantt-grid-line {
  border-right: 1px solid var(--m4-gray-100);
  height: 100%;
}

.m4-gantt-grid-line.weekend {
  background: rgba(243, 244, 246, 0.5);
}

/* Linha de hoje */
.m4-gantt-today {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--m4-danger);
  z-index: 8;
  pointer-events: none;
}

.m4-gantt-today::before {
  content: 'Hoje';
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  font-weight: var(--m4-fw-bold);
  color: var(--m4-danger);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--m4-white);
  padding: 2px 6px;
  border-radius: var(--m4-radius-sm);
}

/* Barras de tarefa */
.m4-gantt-bar {
  position: absolute;
  height: 24px;
  top: 10px;
  border-radius: var(--m4-radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 0 8px;
  font-size: 11px;
  font-weight: var(--m4-fw-semibold);
  color: var(--m4-white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  box-shadow: var(--m4-shadow-sm);
  transition: box-shadow var(--m4-transition), filter var(--m4-transition);
  user-select: none;
}

.m4-gantt-bar:hover {
  filter: brightness(1.05);
  box-shadow: var(--m4-shadow);
}

.m4-gantt-bar.dragging {
  opacity: 0.85;
  z-index: 20;
  box-shadow: var(--m4-shadow-md);
}

.m4-gantt-bar-resize {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 10px;
  cursor: col-resize;
  background: rgba(255,255,255,.25);
  border-radius: 0 var(--m4-radius) var(--m4-radius) 0;
  transition: background var(--m4-transition);
}

.m4-gantt-bar-resize:hover {
  background: rgba(255,255,255,.5);
}

.m4-gantt-bar-text {
  pointer-events: none;
}

.m4-gantt-bar-consolidada {
  opacity: 0.9;
  border: 1px dashed rgba(255,255,255,.5);
}

.m4-gantt-bar-consolidada:hover {
  opacity: 1;
}

.m4-gantt-bar-concluido     { background: var(--m4-success); }
.m4-gantt-bar-em_andamento  { background: var(--m4-warning); }
.m4-gantt-bar-planejado     { background: var(--m4-info); }
.m4-gantt-bar-atrasado      { background: var(--m4-danger); }
.m4-gantt-bar-pausado       { background: var(--m4-gray-400); }
.m4-gantt-bar-cancelado     { background: var(--m4-gray-300); }

.m4-gantt-bar-progress {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  background: rgba(255,255,255,.25);
  border-radius: var(--m4-radius) 0 0 var(--m4-radius);
}

/* Setas de dependência */
.m4-gantt-dependency {
  position: absolute;
  pointer-events: none;
  z-index: 7;
}

.m4-gantt-dependency path {
  fill: none;
  stroke: var(--m4-gray-400);
  stroke-width: 1.5;
  stroke-dasharray: 4 2;
}

.m4-gantt-dependency.warning path {
  stroke: var(--m4-warning);
}

/* Ícones de alerta na barra */
.m4-gantt-bar-alert {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.m4-gantt-bar-alert svg {
  width: 12px;
  height: 12px;
  fill: currentColor;
}

/* Fase colapsada */
.m4-gantt-phase-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: var(--m4-radius-sm);
  cursor: pointer;
  transition: background var(--m4-transition), transform var(--m4-transition);
}

.m4-gantt-phase-toggle:hover {
  background: rgba(0,0,0,.08);
}

.m4-gantt-phase-toggle.collapsed {
  transform: rotate(-90deg);
}

.m4-gantt-phase-toggle svg {
  width: 14px;
  height: 14px;
}

/* Tooltip do Gantt */
.m4-gantt-tooltip {
  position: fixed;
  z-index: var(--m4-z-tooltip);
  background: var(--m4-gray-900);
  color: var(--m4-white);
  border-radius: var(--m4-radius);
  padding: 10px 14px;
  font-size: var(--m4-caption);
  box-shadow: var(--m4-shadow-lg);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--m4-transition), visibility var(--m4-transition);
  max-width: 280px;
}

.m4-gantt-tooltip.visible {
  opacity: 1;
  visibility: visible;
}

.m4-gantt-tooltip-title {
  font-weight: var(--m4-fw-semibold);
  margin-bottom: var(--m4-sp-2);
  color: var(--m4-white);
}

.m4-gantt-tooltip-row {
  display: flex;
  justify-content: space-between;
  gap: var(--m4-sp-4);
  margin-bottom: 2px;
  color: var(--m4-gray-300);
}

.m4-gantt-tooltip-value {
  color: var(--m4-white);
  font-weight: var(--m4-fw-medium);
}