/* === ProjectOverview Component === */
.project-overview {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  gap: var(--space-lg);
  padding: var(--space-xl);
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  overflow-y: auto;
  height: 100%;
  -webkit-overflow-scrolling: touch;
}

.project-overview--empty {
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-overview--loading {
  padding: var(--space-xl);
}

/* --- Overview Header --- */
.project-overview__header {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.project-overview__title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: calc(var(--space-lg) + var(--space-xs));
  font-weight: 700;
  color: var(--text);
  margin: 0;
  white-space: nowrap;
}

.project-overview__stats {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex: 1;
  flex-wrap: wrap;
}

.project-stat {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.project-stat__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.project-stat__content {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.project-stat__value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  font-family: var(--font-mono);
  line-height: 1.2;
}

.project-stat__label {
  font-size: calc(var(--space-sm) + var(--space-xs) * 0.75);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1;
}

.project-stat--active .project-stat__icon {
  color: var(--in-progress);
}

.project-stat--active .project-stat__value {
  color: var(--in-progress);
}

.project-stat--completed .project-stat__icon {
  color: var(--color-success);
}

.project-stat--completed .project-stat__value {
  color: var(--color-success);
}

.project-stat--error .project-stat__icon {
  color: var(--color-error);
}

.project-stat--error {
  border-color: color-mix(in srgb, var(--color-error) 30%, var(--border));
  background: color-mix(in srgb, var(--color-error) 8%, transparent);
}

.project-stat--error .project-stat__value {
  color: var(--color-error);
}

.project-overview__add-btn {
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

/* --- Filter Tabs --- */
.project-overview__filters {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.project-filter-tabs {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-xs);
}

.project-filter-tab {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--space-sm) - var(--space-xs) * 0.5);
  padding: calc(var(--space-sm) - var(--space-xs) * 0.5) var(--space-md);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: calc(var(--space-md) + var(--space-xs) * 0.25);
  font-weight: 500;
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.project-filter-tab:hover {
  color: var(--text);
  background: var(--card);
}

.project-filter-tab.active {
  color: var(--text);
  background: var(--card);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.project-filter-tab:focus-visible {
  outline: none;
  border-color: var(--todo);
  box-shadow: var(--focus-ring-strong);
}

.project-filter-tab.has-errors {
  color: var(--color-error);
}

.project-filter-tab.has-errors.active {
  background: color-mix(in srgb, var(--color-error) 12%, transparent);
  border-color: color-mix(in srgb, var(--color-error) 30%, var(--border));
}

.project-filter-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: calc(var(--space-lg) + var(--space-xs) * 0.5);
  height: calc(var(--space-lg) + var(--space-xs) * 0.5);
  padding: 0 var(--space-xs);
  font-size: calc(var(--space-sm) + var(--space-xs) * 0.75);
  font-weight: 600;
  font-family: var(--font-mono);
  background: var(--border);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  line-height: 1;
}

.project-filter-tab.active .project-filter-count {
  background: var(--text-dim);
  color: var(--bg);
}

.project-filter-tab.has-errors .project-filter-count {
  background: color-mix(in srgb, var(--color-error) 20%, transparent);
  color: var(--color-error);
}

/* --- Sort Dropdown --- */
.project-sort {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: calc(var(--space-md) + var(--space-xs) * 0.25);
}

.project-sort-select {
  appearance: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: calc(var(--space-md) + var(--space-xs) * 0.25);
  padding: calc(var(--space-sm) - var(--space-xs) * 0.5) calc(var(--space-xl) + var(--space-xs)) calc(var(--space-sm) - var(--space-xs) * 0.5) calc(var(--space-sm) + var(--space-xs) * 0.5);
  cursor: pointer;
  font-family: var(--font-primary);
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast);
  background-image: none;
}

.project-sort-select:hover {
  border-color: var(--text-dim);
  color: var(--text);
}

.project-sort-select:focus {
  outline: none;
  border-color: var(--todo);
  box-shadow: var(--focus-ring);
}

/* --- Node Filter Dropdown --- */
.project-node-filter {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: calc(var(--space-md) + var(--space-xs) * 0.25);
}

.project-node-filter-select {
  appearance: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: calc(var(--space-md) + var(--space-xs) * 0.25);
  padding: calc(var(--space-sm) - var(--space-xs) * 0.5) calc(var(--space-xl) + var(--space-xs)) calc(var(--space-sm) - var(--space-xs) * 0.5) calc(var(--space-sm) + var(--space-xs) * 0.5);
  cursor: pointer;
  font-family: var(--font-primary);
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast);
  background-image: none;
}

.project-node-filter-select:hover {
  border-color: var(--text-dim);
  color: var(--text);
}

.project-node-filter-select:focus {
  outline: none;
  border-color: var(--todo);
  box-shadow: var(--focus-ring);
}

/* --- Project Grid --- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-lg);
}

.project-grid--skeleton {
  pointer-events: none;
}

/* --- No Results --- */
.project-overview__no-results {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-2xl);
  color: var(--text-muted);
  text-align: center;
}

.project-overview__no-results svg {
  opacity: 0.4;
}

.project-overview__no-results p {
  font-size: calc(var(--space-md) + var(--space-xs) * 0.75);
}

/* --- Empty State --- */
.project-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-2xl);
  max-width: 480px;
  text-align: center;
}

.project-empty-state__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(var(--space-2xl) * 2.5);
  height: calc(var(--space-2xl) * 2.5);
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: var(--radius-xl);
  color: var(--text-dim);
}

.project-empty-state__title {
  font-size: calc(var(--space-lg) + var(--space-xs));
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.project-empty-state__description {
  font-size: calc(var(--space-md) + var(--space-xs) * 0.5);
  color: var(--text-muted);
  line-height: 1.6;
  max-width: calc(var(--space-2xl) * 11.875);
}

.project-empty-state__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  padding: calc(var(--space-sm) + var(--space-xs) * 0.5) calc(var(--space-lg) + var(--space-xs));
  font-size: calc(var(--space-md) + var(--space-xs) * 0.5);
  font-weight: 600;
}

/* --- Loading Skeleton --- */
@keyframes skeleton-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.project-overview__header-skeleton {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.project-overview__stats-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.project-overview__stat-skeleton {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.project-overview__filters-skeleton {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.project-skeleton {
  background: var(--card);
  border-radius: var(--radius-md);
}

.project-skeleton-icon {
  color: var(--text-dim);
  opacity: 0.5;
}

.project-skeleton--icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.project-skeleton--value {
  width: 32px;
  height: 16px;
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.project-skeleton--label {
  width: 48px;
  height: 10px;
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.project-skeleton--tab {
  width: calc(var(--space-2xl) * 2.5);
  height: 32px;
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.project-skeleton--icon-circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.project-skeleton__text-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  flex: 1;
}

.project-skeleton--title {
  width: 120px;
  height: 14px;
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.project-skeleton--path {
  width: 180px;
  height: 10px;
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.project-skeleton--badge {
  width: 60px;
  height: 22px;
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.project-skeleton--metric {
  width: 60px;
  height: 40px;
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.project-skeleton--activity {
  width: 120px;
  height: 12px;
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.project-skeleton--actions {
  width: 160px;
  height: 28px;
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

/* Skeleton Card Layout */
.project-card--skeleton {
  pointer-events: none;
  opacity: 0.7;
}

.project-card-skeleton__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.project-card-skeleton__health {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.project-card-skeleton__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Stagger skeleton animation delays for visual polish */
.project-card--skeleton:nth-child(2) .project-skeleton--title { animation-delay: 0.1s; }
.project-card--skeleton:nth-child(3) .project-skeleton--title { animation-delay: 0.2s; }
.project-card--skeleton:nth-child(4) .project-skeleton--title { animation-delay: 0.3s; }
.project-card--skeleton:nth-child(5) .project-skeleton--title { animation-delay: 0.4s; }
.project-card--skeleton:nth-child(6) .project-skeleton--title { animation-delay: 0.5s; }

/* === ProjectOverview Mobile Responsive (FN-1316) === */

@media (max-width: 768px) {
  /* Overview container */
  .project-overview {
    padding: var(--space-md);
  }

  /* Header */
  .project-overview__header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-md);
  }

  .project-overview__title {
    font-size: 18px;
  }

  .project-overview__stats {
    flex-direction: row;
    flex-wrap: wrap;
    flex: none;
  }

  .project-stat {
    padding: var(--space-xs) var(--space-sm);
  }

  .project-stat__value {
    font-size: calc(var(--space-md) + var(--space-xs) * 0.5);
  }

  .project-stat__label {
    font-size: 10px;
  }

  .project-overview__add-btn {
    width: 100%;
    justify-content: center;
  }

  /* Filters */
  .project-overview__filters {
    flex-direction: column;
    align-items: stretch;
  }

  .project-filter-tabs {
    width: 100%;
    justify-content: space-between;
  }

  .project-filter-tab {
    flex: 1;
    justify-content: center;
    font-size: 12px;
    padding: 6px 8px;
  }

  .project-sort {
    width: 100%;
    justify-content: space-between;
  }

  .project-sort-select {
    flex: 1;
    margin-left: var(--space-sm);
  }

  .project-node-filter {
    width: 100%;
    justify-content: space-between;
  }

  .project-node-filter-select {
    flex: 1;
    margin-left: var(--space-sm);
  }

  /* Grid */
  .project-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* Cards */
  .project-card {
    min-width: 0;
  }

  .project-card-health {
    flex-wrap: wrap;
    gap: var(--space-md);
  }

  .project-card-footer {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
  }

  .project-card-actions {
    justify-content: flex-end;
    flex-wrap: wrap;
  }

  /* Empty state */
  .project-empty-state {
    padding: var(--space-lg);
    max-width: 100%;
  }
}