/**
 * PERT Layout CSS
 * Main layout, header, sidebar
 */

/* ========== HEADER LAYOUT ========== */

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

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

/* ========== VIEW TOGGLE ========== */
.view-toggle-group {
  display: flex;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.view-toggle-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: var(--font-xs);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

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

.view-toggle-btn--active {
  background: var(--accent-subtle);
  color: var(--accent-bright);
}

.view-toggle-btn--active:hover {
  background: var(--accent-subtle);
  color: var(--accent-bright);
}

/* ========== HEADER EXTENSIONS ========== */

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

.stat-item--duration .stat-item__value {
  color: var(--status-info);
}

.stat-item--critical .stat-item__value {
  color: var(--status-warning);
}

/* Scope toggle group */
.scope-toggle-group {
  display: flex;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.scope-toggle-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: var(--font-xs);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.1s var(--ease-step-out), color 0.1s var(--ease-step-out);
}

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

.scope-toggle-btn--active {
  background: var(--accent);
  color: var(--bg-primary);
}

.scope-toggle-btn--active:hover {
  background: var(--accent-bright);
  color: var(--bg-primary);
}

/* ========== MAIN CONTAINER ========== */

.pert-container {
  display: flex;
  flex: 1;
  min-height: 0; /* Allow flex shrinking */
  overflow: hidden;
  position: relative;
}

/* Make body a flex container so pert-container fills remaining space */
body:has(.pert-container) {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Header should not shrink */
body:has(.pert-container) .header {
  flex-shrink: 0;
}

/* Edit mode banner adjustment */
body.edit-mode:has(.pert-container) {
  padding-top: 24px; /* Space for the fixed banner */
}

/* ========== DIAGRAM VIEW ========== */

.diagram-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  min-height: 0; /* Allow flex shrinking */
}

/* ========== FLOATING CONTROLS ========== */

/* Base floating panel style - glass-like industrial HUD */
.floating-controls,
.floating-notice {
  position: absolute;
  z-index: 100;
  background: rgba(16, 16, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(167, 139, 250, 0.15);
  border-radius: 8px;
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

/* Zoom controls - bottom left, vertical stack */
.floating-controls--zoom {
  left: 16px;
  bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 4px;
}

.floating-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    transform 0.1s ease;
}

.floating-btn:hover {
  background: rgba(167, 139, 250, 0.15);
  color: var(--accent-bright);
}

.floating-btn:active {
  transform: scale(0.92);
  background: rgba(167, 139, 250, 0.25);
}

.floating-btn svg {
  width: 18px;
  height: 18px;
}

/* Edit mode notice - top right */
.floating-notice {
  top: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-size: 12px;
  color: var(--text-secondary);
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.floating-notice svg {
  color: var(--accent);
  flex-shrink: 0;
}

.floating-notice span {
  letter-spacing: 0.02em;
}

/* Show notice only in edit mode */
.edit-mode .floating-notice {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Subtle pulse animation for the icon in edit mode */
.edit-mode .floating-notice svg {
  animation: subtlePulse 2s ease-in-out infinite;
}

@keyframes subtlePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Canvas */
.diagram-canvas {
  flex: 1;
  min-height: 0; /* Critical: allows flex item to shrink below content size */
  overflow: hidden;
  position: relative;
  background: var(--bg-primary);
}

/* vis-network container */
#networkContainer {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
}

/* vis-network overrides for dark theme */
#networkContainer canvas {
  outline: none;
}

/* Hide vis-network manipulation toolbar and all its elements completely */
.vis-manipulation,
.vis-close,
.vis-edit-mode,
.vis-button,
.vis-back,
.vis-none,
.vis-separator-line,
div.vis-network div.vis-manipulation {
  display: none !important;
  visibility: hidden !important;
  height: 0 !important;
  overflow: hidden !important;
}

/* vis-network tooltip styling */
div.vis-tooltip {
  font-family: 'JetBrains Mono', monospace !important;
  background: var(--bg-secondary) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-md) !important;
  color: var(--text-primary) !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3) !important;
  padding: 0 !important;
}

/* Empty state */
.diagram-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-2xl);
}

.diagram-empty__icon {
  width: 64px;
  height: 64px;
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}

.diagram-empty__title {
  font-size: var(--font-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.diagram-empty__text {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  max-width: 400px;
}

.diagram-empty__hint {
  color: var(--text-muted);
  font-size: var(--font-sm);
  max-width: 400px;
}

/* Legend */
.diagram-legend {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  flex-shrink: 0; /* Don't shrink, stay at bottom */
}

/* Move status indicator to avoid overlap with zoom controls and legend */
/* Status is at body level, so use :has() to scope to PERT pages */
body:has(.pert-container) .status {
  bottom: 54px; /* Above the ~40px legend */
  left: 72px;   /* Right of zoom controls (~44px + gap) */
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-sm);
  color: var(--text-secondary);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-sm);
}

.legend-color--critical {
  background: var(--accent);
}

.legend-color--normal {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
}

.legend-color--complete {
  background: var(--status-success);
}

/* ========== TABLE VIEW ========== */

.table-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: var(--spacing-lg);
}

.table-container {
  flex: 1;
  overflow: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.table-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

/* ========== SIDEBAR ========== */

.pert-sidebar {
  width: 320px;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.15s var(--ease-snap);
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
}

.pert-sidebar--open {
  transform: translateX(0);
}

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

.sidebar-header h2 {
  font-size: var(--font-lg);
  font-weight: 600;
}

.sidebar-close {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: var(--font-xl);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.1s var(--ease-step-out), color 0.1s var(--ease-step-out);
}

.sidebar-close:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg);
}

/* Sidebar sections */
.sidebar-section {
  margin-bottom: var(--spacing-xl);
}

.sidebar-section__title {
  font-size: var(--font-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

.sidebar-task-name {
  font-size: var(--font-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.sidebar-task-status {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  font-size: var(--font-sm);
  color: var(--text-secondary);
}

.sidebar-task-status--critical {
  background: var(--accent-subtle);
  color: var(--accent);
}

.sidebar-task-status--complete {
  background: var(--status-success-subtle);
  color: var(--status-success);
}

/* PERT values grid in sidebar */
.sidebar-pert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

.sidebar-pert-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

.sidebar-pert-item__label {
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-muted);
}

.sidebar-pert-item__value {
  font-size: var(--font-lg);
  font-weight: 600;
}

/* Dependency list in sidebar */
.sidebar-dep-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.sidebar-dep-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
}

.sidebar-dep-item__name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-dep-item__remove {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: opacity 0.1s;
}

.sidebar-dep-item:hover .sidebar-dep-item__remove {
  opacity: 1;
}

.sidebar-dep-item__remove:hover {
  background: var(--status-error-subtle);
  color: var(--status-error);
}

.sidebar-dep-empty {
  color: var(--text-muted);
  font-size: var(--font-sm);
  font-style: italic;
}

/* ========== TASK MODAL ========== */

.task-modal-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.task-modal-section h3 {
  font-size: var(--font-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

.pert-values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
}

.pert-value-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

.pert-value-card__label {
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-muted);
  margin-bottom: var(--spacing-xs);
}

.pert-value-card__value {
  font-size: var(--font-xl);
  font-weight: 600;
}

.pert-value-card--highlight {
  background: var(--accent-subtle);
}

.pert-value-card--highlight .pert-value-card__value {
  color: var(--accent);
}

.dependency-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  max-height: 200px;
  overflow-y: auto;
}

.dependency-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

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

.dependency-item__name {
  font-size: var(--font-sm);
}

.dependency-item__badge {
  font-size: var(--font-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.dependency-item__badge--critical {
  background: var(--accent-subtle);
  color: var(--accent);
}

.dependency-item__remove {
  padding: var(--spacing-xs);
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.dependency-item__remove:hover {
  background: var(--status-error-subtle);
  color: var(--status-error);
}

.dependency-empty {
  color: var(--text-muted);
  font-size: var(--font-sm);
  font-style: italic;
  padding: var(--spacing-md);
}

.add-dependency-form {
  display: flex;
  gap: var(--spacing-sm);
}

.add-dependency-form .form-input {
  flex: 1;
}

/* ========== RESPONSIVE ========== */

@media (max-width: 900px) {
  .pert-sidebar {
    width: 100%;
    max-width: 320px;
  }

  .scope-toggle-group {
    display: none;
  }
}

@media (max-width: 640px) {
  .diagram-toolbar {
    flex-wrap: wrap;
  }

  .diagram-legend {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .pert-values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}