.gantt-layout {
  display: flex;
  min-height: calc(100vh - 56px);
  background: var(--color-bg-tertiary);
}

.gantt-sidebar {
  width: 320px;
  background: var(--color-white);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.gantt-sidebar-header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.gantt-sidebar-header h2 {
  font-size: var(--text-lg);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.gantt-sidebar-content {
  padding: var(--space-4);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.gantt-form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.gantt-form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.gantt-input,
.gantt-textarea,
.gantt-table-input {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-white);
  color: var(--color-text-primary);
  font-size: 13px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.gantt-input,
.gantt-table-input {
  padding: 11px 12px;
}

.gantt-textarea {
  resize: vertical;
  min-height: 120px;
  padding: var(--space-3);
  line-height: 1.6;
  font-family: inherit;
}

.gantt-input:focus,
.gantt-textarea:focus,
.gantt-table-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.14);
}

.gantt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  border: none;
  border-radius: 12px;
  padding: 12px 16px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: var(--color-white);
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
  box-shadow: 0 10px 25px -14px rgba(47, 111, 159, 0.8);
}

.gantt-btn:hover {
  transform: translateY(-1px);
}

.gantt-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.gantt-btn--secondary {
  background: linear-gradient(135deg, #f5f9fc, #e8f1f7);
  color: var(--color-primary);
  box-shadow: none;
}

.gantt-btn--ghost {
  background: var(--color-white);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  box-shadow: none;
}

.gantt-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.gantt-preview-header {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0 var(--space-4);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.gantt-preview-title {
  display: block;
  font-weight: 600;
  color: var(--color-text-primary);
}

.gantt-preview-subtitle {
  margin: 4px 0 0;
  color: var(--color-text-secondary);
  font-size: 12px;
}

.gantt-preview-actions {
  display: flex;
  gap: var(--space-2);
}

.gantt-preview-actions--wrap {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.gantt-preview-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  border-radius: 10px;
  font-size: 13px;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.gantt-preview-btn:hover:not(:disabled) {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.gantt-preview-btn.primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.gantt-preview-btn.primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.gantt-preview-btn:disabled {
  opacity: 0.48;
  cursor: not-allowed;
}

.gantt-render-area {
  flex: 1;
  padding: var(--space-6);
  overflow: auto;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.gantt-canvas-container {
  background: var(--color-white);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  min-width: 800px;
  min-height: 400px;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: auto;
}

.gantt-empty-state,
.gantt-empty-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  color: var(--color-text-secondary);
  text-align: center;
  padding: 48px 24px;
}

.gantt-empty-state svg,
.gantt-empty-panel svg {
  width: 48px;
  height: 48px;
  opacity: 0.6;
}

.gantt-empty-panel h3 {
  font-size: 18px;
  color: var(--color-text-primary);
}

.gantt-empty-panel p {
  max-width: 560px;
  line-height: 1.7;
}

.gantt-empty-panel--error {
  color: var(--color-error);
}

.gantt-workbench {
  display: grid;
  grid-template-columns: minmax(320px, 400px) minmax(0, 1fr);
  min-height: calc(100vh - 52px);
  align-items: start;
  background:
    radial-gradient(circle at top left, rgba(26, 115, 232, 0.08), transparent 26%),
    linear-gradient(180deg, #f5f8ff 0%, #eef3f9 100%);
}

.gantt-sidebar--workbench {
  width: auto;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 250, 252, 0.96));
  backdrop-filter: blur(18px);
  border-right: 1px solid rgba(148, 163, 184, 0.22);
}

.gantt-sidebar-scroll {
  flex: 0 0 auto;
  min-height: auto;
  overflow: visible;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.gantt-card {
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(255, 255, 255, 0.82);
  border-radius: 20px;
  padding: 18px;
  box-shadow: 0 16px 36px -28px rgba(15, 23, 42, 0.28);
}

.gantt-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.gantt-card-header h2 {
  font-size: 17px;
  color: #0f172a;
  margin-top: 3px;
}

.gantt-card-step {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: #eff6ff;
  color: #2563eb;
  font-size: 11px;
  font-weight: 700;
}

.gantt-card-tip {
  color: var(--color-text-tertiary);
  font-size: 12px;
  white-space: nowrap;
}

.gantt-upload-zone {
  border: 1.5px dashed #9db8f8;
  border-radius: 18px;
  background: linear-gradient(180deg, #f8fbff, #edf4ff);
  padding: 20px 18px;
  cursor: pointer;
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.gantt-upload-zone:hover,
.gantt-upload-zone.is-dragover {
  border-color: #1a73e8;
  transform: translateY(-1px);
  box-shadow: 0 14px 28px -20px rgba(26, 115, 232, 0.72);
}

.gantt-upload-illustration {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: rgba(26, 115, 232, 0.1);
  color: #1a73e8;
  margin-bottom: 12px;
}

.gantt-upload-title {
  font-size: 15px;
  font-weight: 600;
  color: #0f172a;
}

.gantt-upload-desc {
  margin-top: 8px;
  color: var(--color-text-secondary);
  font-size: 12px;
  line-height: 1.7;
}

.gantt-upload-status {
  margin-top: 12px;
  padding: 11px 12px;
  border-radius: 12px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.gantt-upload-status.tone-success {
  color: #166534;
  background: #f0fdf4;
  border-color: #bbf7d0;
}

.gantt-upload-status.tone-error {
  color: #b91c1c;
  background: #fef2f2;
  border-color: #fecaca;
}

.gantt-upload-status.tone-loading {
  color: #1d4ed8;
  background: #eff6ff;
  border-color: #bfdbfe;
}

.gantt-form-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.gantt-date-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.gantt-action-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.gantt-generate-hint {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.gantt-history-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.gantt-history-empty {
  padding: 14px;
  border-radius: 14px;
  background: #f8fafc;
  color: var(--color-text-secondary);
  font-size: 12px;
  line-height: 1.7;
}

.gantt-history-item {
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 12px;
  background: #ffffff;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.gantt-history-item.active,
.gantt-history-item:hover {
  border-color: #93c5fd;
  box-shadow: 0 12px 24px -20px rgba(37, 99, 235, 0.78);
  transform: translateY(-1px);
}

.gantt-history-main {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.gantt-history-main strong {
  color: #0f172a;
  font-size: 13px;
}

.gantt-history-main span,
.gantt-history-main small {
  color: var(--color-text-secondary);
  font-size: 11px;
  line-height: 1.5;
}

.gantt-history-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.gantt-text-btn {
  border: none;
  background: transparent;
  color: #2563eb;
  font-size: 12px;
  cursor: pointer;
  padding: 0;
}

.gantt-text-btn.danger {
  color: #dc2626;
}

.gantt-main--workbench {
  min-height: calc(100vh - 52px);
  overflow: visible;
}

.gantt-preview-header--sticky {
  position: sticky;
  top: 0;
  z-index: 3;
  min-height: 84px;
  padding: 18px 22px;
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.gantt-summary-strip {
  padding: 18px 22px 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.gantt-stat-card {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(148, 163, 184, 0.16);
  padding: 18px;
  box-shadow: 0 12px 26px -22px rgba(15, 23, 42, 0.36);
}

.gantt-stat-label {
  display: block;
  color: var(--color-text-secondary);
  font-size: 12px;
  margin-bottom: 8px;
}

.gantt-stat-card strong {
  display: block;
  font-size: 24px;
  color: #0f172a;
  margin-bottom: 8px;
}

.gantt-stat-card p {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.gantt-warning-stack {
  padding: 14px 22px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.gantt-warning {
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.6;
}

.gantt-warning--warn {
  background: #fff7ed;
  border: 1px solid #fdba74;
  color: #9a3412;
}

.gantt-warning--error {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  color: #b91c1c;
}

.gantt-tabs {
  padding: 18px 22px 0;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.gantt-tab {
  border: 1px solid rgba(148, 163, 184, 0.22);
  background: rgba(255, 255, 255, 0.86);
  color: var(--color-text-secondary);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.gantt-tab.active,
.gantt-tab:hover {
  color: #1d4ed8;
  border-color: #93c5fd;
  background: #eff6ff;
}

.gantt-tab-panels {
  flex: 1;
  min-height: 0;
  overflow: visible;
  padding: 18px 22px 22px;
}

.gantt-tab-panel {
  display: none;
  height: auto;
}

.gantt-tab-panel.active {
  display: block;
}

.gantt-sheet-wrap,
.gantt-table-panel,
.gantt-notes-panel {
  height: auto;
  min-height: 0;
}

.gantt-sheet,
.gantt-table-panel,
.gantt-notes-panel {
  height: auto;
  min-height: 560px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.16);
  box-shadow: 0 30px 50px -36px rgba(15, 23, 42, 0.42);
}

.gantt-sheet {
  padding: 28px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  overflow-x: auto;
  overflow-y: visible;
}

.gantt-sheet svg {
  max-width: 100%;
  height: auto;
}

.gantt-table-panel {
  padding: 20px;
  overflow: visible;
}

.gantt-table-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
}

.gantt-table-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.gantt-table-toolbar h3 {
  font-size: 18px;
  color: #0f172a;
}

.gantt-table-toolbar p {
  margin-top: 6px;
  color: var(--color-text-secondary);
  font-size: 12px;
}

.gantt-table-wrap {
  overflow: auto;
  border: 1px solid #e2e8f0;
  border-radius: 18px;
}

.gantt-task-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1180px;
}

.gantt-task-table th,
.gantt-task-table td {
  padding: 12px;
  border-bottom: 1px solid #eef2f7;
  vertical-align: middle;
  text-align: left;
  font-size: 12px;
}

.gantt-task-table thead th {
  position: sticky;
  top: 0;
  background: #f8fbff;
  z-index: 1;
  color: #475569;
  font-weight: 700;
}

.gantt-task-table tbody tr.is-critical {
  background: rgba(239, 246, 255, 0.6);
}

.task-id-cell {
  font-weight: 700;
  color: #1d4ed8;
  white-space: nowrap;
}

.gantt-table-input {
  min-width: 110px;
  padding: 9px 10px;
  border-radius: 8px;
  font-size: 12px;
}

.gantt-table-input--number {
  width: 88px;
}

.task-toggle-cell {
  width: 72px;
}

.gantt-toggle {
  position: relative;
  display: inline-flex;
  width: 42px;
  height: 24px;
}

.gantt-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.gantt-toggle span {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: #d1d5db;
  transition: background var(--transition-fast);
}

.gantt-toggle span::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.18);
  transition: transform var(--transition-fast);
}

.gantt-toggle input:checked + span {
  background: #2563eb;
}

.gantt-toggle input:checked + span::after {
  transform: translateX(18px);
}

.gantt-critical-pill,
.gantt-muted-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.gantt-critical-pill {
  background: var(--color-primary);
  color: #ffffff;
}

.gantt-muted-pill {
  background: #f1f5f9;
  color: #475569;
}

.gantt-icon-btn {
  border: 1px solid #fecaca;
  color: #dc2626;
  background: #fff5f5;
  border-radius: 9px;
  padding: 7px 10px;
  font-size: 12px;
  cursor: pointer;
}

.gantt-notes-panel {
  padding: 24px;
  overflow: visible;
}

.gantt-notes-article {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ========== Tender-style overrides ========== */
.gantt-workbench {
  background: linear-gradient(180deg, #f8fcff 0%, #edf4f9 100%);
}

.gantt-sidebar--workbench {
  background: linear-gradient(180deg, rgba(251, 254, 255, 0.98), rgba(239, 246, 250, 0.98));
  border-right: 1px solid var(--color-border-light);
}

.gantt-card {
  border: 1px solid var(--color-border-light);
  background: #ffffff;
  border-radius: 8px;
  box-shadow: 0 14px 28px -24px rgba(24, 50, 74, 0.12);
  padding: 16px;
}

.gantt-card-step {
  background: rgba(47, 111, 159, 0.07);
  color: var(--color-text-secondary);
  border-radius: 6px;
}

.gantt-upload-zone {
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
}

.gantt-upload-zone:hover,
.gantt-upload-zone.is-dragover {
  border-color: var(--color-primary);
  transform: none;
  box-shadow: 0 0 0 1px rgba(47, 111, 159, 0.12);
}

.gantt-upload-illustration {
  border-radius: 10px;
  background: rgba(47, 111, 159, 0.08);
  color: var(--color-text-secondary);
}

.gantt-btn {
  border-radius: 6px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  box-shadow: none;
  transition: background var(--transition-fast), opacity var(--transition-fast), border-color var(--transition-fast);
}

.gantt-btn:hover {
  background: var(--color-primary-hover);
  transform: none;
}

.gantt-btn--secondary {
  background: #ffffff;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.gantt-btn--ghost {
  border: 1px solid var(--color-border);
}

.gantt-preview-header--sticky {
  min-height: 76px;
  background: rgba(248, 252, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border-light);
}

.gantt-preview-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
}

.gantt-preview-subtitle {
  margin-top: 6px;
  color: var(--color-text-secondary);
  font-size: 12px;
  line-height: 1.6;
}

.gantt-preview-btn {
  border-radius: 6px;
  border-color: var(--color-border);
  color: var(--color-text-secondary);
  background: #ffffff;
}

.gantt-preview-btn:hover:not(:disabled) {
  background: var(--color-bg-secondary);
}

.gantt-preview-btn.primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.gantt-preview-btn.primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.gantt-tender-meta {
  padding: 14px 22px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.gantt-meta-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid var(--color-border-light);
  border-radius: 999px;
  background: #ffffff;
  color: var(--color-text-secondary);
  font-size: 12px;
}

.gantt-sheet-shell {
  padding: 14px 22px 0;
}

.gantt-sheet-wrap--tender {
  overflow-x: auto;
  overflow-y: visible;
}

.gantt-sheet--tender {
  min-height: 0;
  padding: 14px;
  border-radius: 6px;
  border: 1px solid var(--color-border-light);
  background: #ffffff;
  box-shadow: 0 14px 28px -24px rgba(24, 50, 74, 0.12);
}

.gantt-sheet--tender svg {
  max-width: none;
}

.gantt-review-panel {
  padding: 14px 22px 22px;
}

.gantt-review-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.gantt-review-panel-header h3 {
  font-size: 16px;
  color: var(--color-text-primary);
}

.gantt-review-panel-header p {
  margin-top: 4px;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.gantt-table-panel {
  min-height: 420px;
  border-radius: 6px;
  border: 1px solid var(--color-border-light);
  box-shadow: 0 14px 28px -24px rgba(24, 50, 74, 0.12);
}

.gantt-table-wrap {
  border-radius: 6px;
  border: 1px solid var(--color-border-light);
}

.gantt-task-table thead th {
  background: #eff6fb;
  color: var(--color-text-secondary);
  text-align: center;
}

.gantt-task-table td {
  border-bottom: 1px solid #e7ebf0;
}

.task-id-cell {
  color: var(--color-text-primary);
}

.gantt-table-input {
  border-radius: 6px;
}

.gantt-critical-pill {
  background: var(--color-primary);
}

.gantt-notes-section {
  border: 1px solid var(--color-border-light);
  border-radius: 18px;
  background: #ffffff;
  padding: 20px 22px;
}

.gantt-notes-section h3 {
  font-size: 17px;
  color: var(--color-text-primary);
  margin-bottom: 12px;
}

.gantt-notes-section p,
.gantt-notes-section li {
  color: var(--color-text-secondary);
  font-size: 13px;
  line-height: 1.8;
}

.gantt-notes-section ul {
  margin-top: 10px;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.gantt-notes-table-wrap {
  margin-top: 14px;
  overflow: auto;
}

.gantt-notes-table {
  width: 100%;
  border-collapse: collapse;
}

.gantt-notes-table th,
.gantt-notes-table td {
  border: 1px solid #e2e8f0;
  padding: 10px 12px;
  font-size: 12px;
}

.gantt-notes-table th {
  background: #f8fafc;
  color: #475569;
  font-weight: 700;
}

.gantt-toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 1200;
  min-width: 240px;
  max-width: 360px;
  border-radius: 14px;
  padding: 14px 16px;
  color: #ffffff;
  background: rgba(15, 23, 42, 0.94);
  box-shadow: 0 24px 40px -24px rgba(15, 23, 42, 0.7);
  transform: translateY(10px);
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.gantt-toast.show {
  opacity: 1;
  transform: translateY(0);
}

.gantt-toast.tone-warn {
  background: rgba(154, 52, 18, 0.96);
}

.gantt-toast.tone-error {
  background: rgba(185, 28, 28, 0.96);
}

@media (max-width: 1200px) {
  .gantt-workbench {
    grid-template-columns: 360px minmax(0, 1fr);
  }

  .gantt-summary-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .gantt-workbench {
    grid-template-columns: 1fr;
  }

  .gantt-sidebar--workbench {
    border-right: none;
    border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  }

  .gantt-preview-header--sticky {
    position: static;
  }

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

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

@media (max-width: 720px) {
  .gantt-preview-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .gantt-preview-actions--wrap {
    width: 100%;
    justify-content: flex-start;
  }

  .gantt-preview-btn {
    width: calc(50% - 4px);
  }

  .gantt-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }

  .gantt-tab {
    white-space: nowrap;
  }

  .gantt-sidebar-scroll,
  .gantt-tab-panels,
  .gantt-summary-strip,
  .gantt-warning-stack {
    padding-left: 14px;
    padding-right: 14px;
  }

  .gantt-card,
  .gantt-sheet,
  .gantt-table-panel,
  .gantt-notes-panel {
    border-radius: 18px;
  }
}

/* ========================================
   Claude Unification Overrides
   ======================================== */

.gantt-layout,
.gantt-workbench {
  background: linear-gradient(180deg, #f8fcff 0%, var(--color-bg) 46%, var(--color-bg-secondary) 100%);
}

.gantt-sidebar,
.gantt-sidebar--workbench {
  background: linear-gradient(180deg, rgba(251, 254, 255, 0.98), rgba(240, 247, 252, 0.98));
  border-right-color: var(--color-border-light);
}

.gantt-card,
.gantt-sheet,
.gantt-table-panel,
.gantt-notes-panel,
.gantt-stat-card,
.gantt-history-item,
.gantt-sheet--tender {
  background: rgba(255, 255, 255, 0.96);
  border-color: var(--color-border-light);
  box-shadow: 0 18px 34px -28px rgba(24, 50, 74, 0.14);
}

.gantt-card-step,
.gantt-meta-chip,
.gantt-muted-pill {
  background: rgba(47, 111, 159, 0.07);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-light);
}

.gantt-upload-zone,
.gantt-table-wrap,
.gantt-notes-section,
.gantt-preview-btn,
.gantt-input,
.gantt-textarea,
.gantt-table-input {
  border-color: var(--color-border);
}

.gantt-upload-zone,
.gantt-input,
.gantt-textarea,
.gantt-table-input,
.gantt-preview-btn,
.gantt-btn--secondary,
.gantt-btn--ghost {
  background: rgba(255, 255, 255, 0.82);
}

.gantt-input:focus,
.gantt-textarea:focus,
.gantt-table-input:focus,
.gantt-preview-btn:hover:not(:disabled) {
  box-shadow: 0 0 0 1px var(--color-primary);
}

.gantt-btn,
.gantt-preview-btn.primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: none;
}

.gantt-btn:hover,
.gantt-preview-btn.primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.gantt-preview-header,
.gantt-preview-header--sticky {
  background: rgba(248, 252, 255, 0.94);
  border-bottom-color: var(--color-border-light);
  backdrop-filter: blur(10px);
}

.gantt-preview-title,
.gantt-table-toolbar h3,
.gantt-review-panel-header h3,
.gantt-card-header h2,
.gantt-notes-section h3 {
  color: var(--color-text-primary);
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0;
}

.gantt-preview-subtitle,
.gantt-card-tip,
.gantt-upload-desc,
.gantt-generate-hint,
.gantt-task-table thead th,
.gantt-stat-label,
.gantt-stat-card p {
  color: var(--color-text-secondary);
}

.gantt-task-table thead th,
.gantt-notes-table th {
  background: #eff6fb;
}

.gantt-task-table tbody tr.is-critical {
  background: rgba(47, 111, 159, 0.06);
}

.task-id-cell,
.gantt-text-btn,
.gantt-tab.active,
.gantt-tab:hover {
  color: var(--color-text-primary);
}

.gantt-tab {
  background: rgba(255, 255, 255, 0.72);
}