/* ========== GANTT LAYOUT - Grid, headers, rows ========== */

/* Gantt CSS variables */
:root {
  --cell-size: 28px;
  --task-col-width: 240px;
  --type-col-width: 70px;
}

/* ========== ASSEMBLY LINE HEADER ========== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-xl);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Station badge */
.station-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.station-badge__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--accent);
  color: var(--bg-primary);
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: var(--font-xs);
}

.station-badge__label {
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--text-muted);
}

/* Project title */
.header h1 {
  font-size: var(--font-lg);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
}

/* Stat group - variance display */
.stat-group {
  display: flex;
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-tertiary);
}

.stat-item__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: var(--station-bg);
  border: 1px solid var(--station-border);
  border-radius: var(--radius-sm);
  font-size: 9px;
  font-weight: 600;
  color: var(--text-muted);
}

.stat-item__value {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-primary);
  min-width: 20px;
  text-align: right;
}

.stat-item__label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-muted);
}

.stat-item--planned .stat-item__value {
  color: var(--accent);
}

.stat-item--reality .stat-item__value {
  color: var(--text-secondary);
}

.stat-item--variance.positive .stat-item__value {
  color: var(--status-success);
}

.stat-item--variance.negative .stat-item__value {
  color: var(--status-error);
}

/* Progress stats */
.progress-stats {
  font-size: var(--font-xs);
  color: var(--text-muted);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

/* Status indicator */
.status-indicator {
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-muted);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--station-bg);
  border: 1px solid var(--station-border);
  border-radius: var(--radius-sm);
}

/* Action group */
.action-group {
  display: flex;
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.action-group .btn {
  border-radius: 0;
  border: none;
}

.action-group .btn:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.action-group .btn:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Ghost button variant */
.btn--ghost {
  background: var(--bg-tertiary);
  border: none;
  color: var(--text-secondary);
}

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

/* Search input override */
.search-input {
  width: 120px;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-sm);
}

/* Responsive header */
@media (max-width: 1100px) {
  .header {
    flex-wrap: wrap;
  }

  .header-right {
    flex-wrap: wrap;
  }
}

@media (max-width: 800px) {
  .header-left {
    flex-wrap: wrap;
    width: 100%;
  }

  .header-right {
    width: 100%;
    justify-content: flex-start;
  }

  .stat-item__label {
    display: none;
  }

  .action-group {
    display: none;
  }
}

/* Gantt Chart Container */
.gantt {
  display: grid;
  grid-template-columns: var(--task-col-width) var(--type-col-width) repeat(var(--total-weeks, 35), minmax(var(--cell-size), 1fr));
  gap: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  min-width: 100%;
  width: max-content;
}

/* ========== MONTH HEADER ROW ========== */
.month-header {
  display: contents;
}

.month-header > div {
  background: var(--bg-tertiary);
  padding: 12px 8px;
  font-size: var(--font-base);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.month-header > div:first-child {
  text-align: left;
  background: var(--bg-tertiary);
}

.month-header > div:nth-child(2) {
  text-align: left;
  background: var(--bg-tertiary);
}

/* ========== WEEK HEADER ROW ========== */
.week-header {
  display: contents;
}

.week-header > div {
  background: var(--bg-secondary);
  padding: 8px 2px;
  font-size: var(--font-xs);
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.week-header > div:first-child {
  text-align: left;
  padding-left: 12px;
  color: var(--text-secondary);
  font-size: var(--font-sm);
  background: var(--bg-secondary);
}

.week-header > div:nth-child(2) {
  text-align: left;
  padding-left: 12px;
  color: var(--text-secondary);
  font-size: var(--font-sm);
  background: var(--bg-secondary);
}

/* ========== CATEGORY ROW ========== */
.category-row {
  display: contents;
}

.category-row > div {
  background: var(--bg-tertiary);
  padding: 10px 12px;
  font-size: var(--font-base);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}

/* Category name cell */
.category-row > div:first-child {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-tertiary);
}

/* Category type cell */
.category-row > div:nth-child(2) {
  background: var(--bg-tertiary);
}

/* Category spacer - fills remaining columns */
.category-row > div:nth-child(3) {
  grid-column: 3 / -1;
  background: var(--bg-tertiary);
}

.category-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-sm);
}

/* ========== TASK ROWS ========== */
.task-row {
  display: contents;
}

.task-row > div {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}

.task-row > div:first-child {
  background: var(--bg-primary);
}

.task-row > div:nth-child(2) {
  background: var(--bg-primary);
}

.task-row:hover > div:not(.week-cell--active) {
  background: var(--bg-hover);
}

.task-row:hover > div:first-child,
.task-row:hover > div:nth-child(2) {
  background: var(--bg-hover);
}

/* Task name */
.task-name {
  padding: 0 10px;
  font-size: var(--font-base);
  color: var(--text-primary);
  overflow: hidden;
  min-width: 0;
}

.task-name-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

/* Task type */
.task-type {
  padding: 0 10px;
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.task-type--planned {
  color: var(--text-secondary);
}

.task-type--reality {
  color: var(--text-muted);
  font-style: italic;
}

/* ========== PLAN VS REALITY ROW DIFFERENTIATION ========== */
.task-row--reality > div {
  background: rgba(255, 255, 255, 0.02);
}

.task-row--reality > div:first-child {
  border-left: 2px solid var(--text-muted);
  background: #0d0d0d;
}

.task-row--reality > div:nth-child(2) {
  background: #0d0d0d;
}

.task-row--reality:hover > div:not(.week-cell--active) {
  background: rgba(255, 255, 255, 0.04);
}

.task-row--reality:hover > div:first-child,
.task-row--reality:hover > div:nth-child(2) {
  background: #141414;
}

.task-row--planned > div:first-child {
  border-left: 2px solid transparent;
}

/* ========== CATEGORY CONTROLS ========== */
.category-controls {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ========== ADD ROWS ========== */
.add-task-row {
  grid-column: 1 / -1;
  padding: 8px 12px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
}

.add-category-row {
  grid-column: 1 / -1;
  padding: 12px;
  background: var(--bg-secondary);
}

/* ========== COLLAPSIBLE CATEGORIES ========== */
.collapse-toggle {
  cursor: pointer;
  transition: transform var(--transition-slow);
  margin-right: 8px;
  font-size: var(--font-sm);
  color: var(--text-muted);
  user-select: none;
}

.collapse-toggle:hover {
  color: var(--text-primary);
}

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