/* Portal — login & dashboards */
.portal-body {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
}

.portal-video-wrap {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.portal-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portal-video-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 8, 0.82);
}

.portal-video-wrap--login {
  background: #080808 radial-gradient(ellipse 80% 60% at 30% 40%, rgba(40, 38, 35, 0.5), #080808);
}

body.login-checking .login-card {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .portal-video-wrap--login .portal-video {
    display: none;
  }
}

.portal-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-x);
  background: rgba(8, 8, 8, 0.7);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.portal-main {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  padding: calc(var(--header-h) + 2rem) var(--pad-x) 3rem;
}

/* Page transitions */
body.page-exit {
  opacity: 0;
  transition: opacity 0.45s var(--ease);
}

body.page-enter {
  animation: pageEnter 0.55s var(--ease) forwards;
}

@keyframes pageEnter {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Login */
.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-h) - 4rem);
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: 2.5rem;
  background: rgba(13, 13, 13, 0.85);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px);
}

.login-card h1 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.login-card .login-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  outline: none;
  transition: border-color 0.25s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--border-hover);
}

.form-error {
  font-size: 0.8rem;
  color: #c47a6a;
  margin-top: 1rem;
  min-height: 1.2em;
}

#save-project-btn.btn-primary {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}

#save-project-btn.btn-primary:hover:not(:disabled) {
  border-color: var(--border-hover);
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

#save-project-btn.btn-primary.is-dirty {
  background: var(--text) !important;
  color: var(--bg) !important;
  border-color: var(--text) !important;
}

#save-project-btn.btn-primary.is-dirty:hover:not(:disabled) {
  background: transparent;
  color: var(--text);
  border-color: var(--text);
}

#save-project-btn.btn-primary:disabled {
  opacity: 0.55;
  cursor: wait;
}

.save-status {
  font-size: 0.85rem;
  margin-top: 1rem;
  min-height: 1.4em;
  letter-spacing: 0.04em;
}

.save-status.is-saving {
  color: var(--text-muted);
}

.save-status.is-ok {
  color: var(--accent);
  font-weight: 500;
}

.login-hint {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.7rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* Dashboard layout */
.portal-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.portal-toolbar h1 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.portal-user {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.portal-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-sm {
  padding: 0.6rem 1.1rem;
  font-size: 0.65rem;
}

/* Project cards grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.project-card {
  display: block;
  padding: 1.75rem;
  background: var(--bg-card);
  transition: background 0.25s;
}

.project-card:hover {
  background: var(--bg-elevated);
}

.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.project-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.project-status {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
}

.project-status.in_progress {
  border-color: var(--accent);
  color: var(--accent);
}

/* Project dashboard */
.project-dashboard {
  max-width: var(--max-w);
  margin: 0 auto;
}

.project-hero {
  margin-bottom: 2.5rem;
}

.project-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.project-workspace-section {
  margin-top: 2rem;
}

.project-workspace-section .concept-row-top {
  margin-bottom: 0;
}

.project-workspace-section:not(.is-collapsed) .concept-row-top {
  margin-bottom: 0.75rem;
}

.project-workspace-section:not(.is-collapsed) .concept-row-body {
  max-height: 4000px;
}

.project-workspace-section .dashboard-grid {
  margin-bottom: 0;
  border: none;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 1px;
}

.dashboard-panel {
  padding: 1.75rem;
  background: var(--bg-card);
}

.dashboard-panel.full {
  grid-column: 1 / -1;
}

.panel-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
}

/* Metrics */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.metric-box {
  padding: 1.25rem;
  border: 1px solid var(--border);
  text-align: center;
}

.metric-box-progress {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.metric-sublabel {
  display: block;
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.progress-ring-wrap {
  margin-bottom: 0.5rem;
}

.progress-ring {
  --pct: 0;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: conic-gradient(
    var(--accent) 0 calc(var(--pct) * 1%),
    rgba(255, 255, 255, 0.08) 0
  );
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.progress-ring::before {
  content: "";
  position: absolute;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--bg, #0a0a0a);
}

.progress-ring-value {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
}

.metric-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.metric-value.accent {
  color: var(--accent);
}

.metric-label {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* Concepts table */
.concepts-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.concepts-table th,
.concepts-table td {
  padding: 0.85rem 0;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.concepts-table th {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.concepts-table td:last-child,
.concepts-table th:last-child {
  text-align: right;
}

.concept-status {
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.concept-status.in_progress {
  color: var(--accent);
}

/* 3D zone */
.zone-3d {
  aspect-ratio: 16 / 10;
  background: var(--bg);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.zone-3d img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

/* Documents */
.doc-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.doc-item {
  padding: 1rem;
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
}

.doc-item.notification {
  border-left-color: var(--text-dim);
}

.doc-item h4 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.doc-item .doc-type {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.doc-item.notification .doc-type {
  color: var(--text-dim);
}

.doc-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Admin */
.admin-layout {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 2rem;
  align-items: start;
}

.admin-form {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  max-height: calc(100vh - var(--header-h) - 6rem);
  overflow-y: auto;
}

.admin-form h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.admin-form--simple {
  max-height: none;
}

.admin-form--simple .admin-section-hint {
  margin-bottom: 1.25rem;
}

.admin-badge {
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.project-edit-section {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.admin-section-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}

.admin-section {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.admin-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.admin-section-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.admin-empty {
  font-size: 0.8rem;
  color: var(--text-dim);
  padding: 1rem;
  border: 1px dashed var(--border);
  margin-bottom: 0.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-row-4 {
  grid-template-columns: repeat(4, 1fr);
}

.form-row-3 {
  grid-template-columns: repeat(3, 1fr);
}

.concepts-editor,
.documents-editor {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.concept-row,
.document-row {
  padding: 1rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
}

.concept-row-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0;
}

.concept-row:not(.is-collapsed) .concept-row-top {
  margin-bottom: 0.75rem;
}

.concept-toggle {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex: 1;
  min-width: 0;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-align: left;
  color: var(--text);
  font-family: var(--font-body);
}

.concept-chevron {
  width: 6px;
  height: 6px;
  border-right: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  transform: rotate(45deg);
  transition: transform 0.25s var(--ease);
  flex-shrink: 0;
  margin-top: -2px;
}

.concept-row.is-collapsed .concept-chevron {
  transform: rotate(-45deg);
  margin-top: 2px;
}

.concept-row-num {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--accent);
  flex-shrink: 0;
}

.concept-summary {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.concept-row:not(.is-collapsed) .concept-summary {
  display: none;
}

.concept-row-body {
  overflow: hidden;
  transition: max-height 0.35s var(--ease), opacity 0.25s;
  max-height: 900px;
  opacity: 1;
}

.concept-row.is-collapsed {
  padding: 0.65rem 1rem;
}

.concept-row.is-collapsed .concept-row-body {
  max-height: 0;
  opacity: 0;
  pointer-events: none;
}

.concepts-editor .concept-row + .concept-row {
  margin-top: 0;
}

.document-row .concept-row-body {
  max-height: 520px;
}

.upload-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.upload-row input[type="file"] {
  font-size: 0.75rem;
  color: var(--text-muted);
  max-width: 100%;
}

.upload-hint {
  font-size: 0.7rem;
  color: var(--text-dim);
}

.upload-url-label {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 0.75rem;
  margin-bottom: 0.35rem;
}

.doc-image-preview-wrap {
  margin: 0.75rem 0;
}

.doc-image-preview {
  display: block;
  max-width: 100%;
  max-height: 200px;
  width: auto;
  border: 1px solid var(--border);
  object-fit: contain;
  background: rgba(0, 0, 0, 0.2);
}

.doc-item-image {
  border-left-color: var(--text-muted);
}

.doc-item-image .doc-image-preview {
  margin-top: 0.5rem;
  max-height: 280px;
}

.subsection-label {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 1rem 0 0.5rem;
}

.admin-empty-inline {
  margin: 0.25rem 0 0.75rem;
  font-size: 0.8rem;
}

.concept-advances {
  margin-top: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.advance-list {
  list-style: none;
  margin: 0 0 0.75rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.advance-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.35rem 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
}

.advance-amount-preview {
  margin: 0.35rem 0 0;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 500;
  min-height: 1.1em;
}

.advance-pending {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.btn-remove-sm {
  font-size: 1rem;
  padding: 0 0.35rem;
}

.estimations-editor,
.estimations-readonly {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 2rem;
}

.estimations-editor .estimation-card {
  display: block;
  visibility: visible;
}

.estimation-card {
  padding: 1rem;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.estimation-card.is-paid {
  border-left: 2px solid var(--accent);
  opacity: 0.85;
}

.estimation-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.estimation-label-input {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  width: 100%;
  max-width: 280px;
  padding: 0.15rem 0;
}

.estimation-meta {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.35rem;
}

.estimation-total {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--accent);
  white-space: nowrap;
}

.estimation-card-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.est-paid-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.55rem 0.35rem 0.4rem;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 2rem;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: border-color 0.2s, background 0.2s, color 0.2s;
  flex-shrink: 0;
}

.est-paid-toggle:hover:not(:disabled) {
  border-color: var(--text-dim);
}

.est-paid-toggle:disabled {
  opacity: 0.55;
  cursor: wait;
}

.est-paid-toggle.is-paid {
  border-color: var(--accent);
  background: rgba(201, 169, 98, 0.12);
  color: var(--accent);
}

.est-paid-toggle-track {
  width: 2rem;
  height: 1.1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.1);
  position: relative;
  flex-shrink: 0;
  transition: background 0.2s;
}

.est-paid-toggle.is-paid .est-paid-toggle-track {
  background: rgba(201, 169, 98, 0.35);
}

.est-paid-toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  background: var(--text-muted);
  transition: transform 0.2s var(--ease), background 0.2s;
}

.est-paid-toggle.is-paid .est-paid-toggle-thumb {
  transform: translateX(0.9rem);
  background: var(--accent);
}

.est-paid-toggle-text {
  min-width: 4.5rem;
  text-align: left;
}

.estimation-date-input {
  font-size: 0.75rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.25rem 0.4rem;
}

.estimation-status-badge {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.estimation-status-badge.paid {
  color: var(--accent);
}

.estimation-card .concept-row-top {
  flex-wrap: wrap;
  align-items: center;
  row-gap: 0.5rem;
}

.estimation-card .concept-toggle {
  flex: 1 1 12rem;
  min-width: 0;
}

.estimation-card.is-collapsed .concept-summary {
  display: inline;
}

.estimation-head-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1 1 auto;
  flex-shrink: 0;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.estimation-detail {
  max-height: none;
  overflow: visible;
}

.estimation-card.is-collapsed .estimation-detail {
  max-height: 0;
  overflow: hidden;
}

.estimation-lines-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.5rem 0 1rem;
  font-size: 0.8rem;
}

.estimation-lines-table th,
.estimation-lines-table td {
  border: 1px solid var(--border);
  padding: 0.4rem 0.55rem;
  text-align: left;
}

.estimation-lines-table th {
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.03);
}

.estimation-notes-readonly {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
  line-height: 1.5;
}

.estimation-card .concept-row-top {
  margin-bottom: 0;
  position: relative;
  z-index: 1;
}

.estimation-card .concept-toggle {
  cursor: pointer;
  min-height: 2.25rem;
}

.estimation-card:not(.is-collapsed) .concept-row-top {
  margin-bottom: 0.75rem;
}

.btn-remove {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  transition: color 0.2s;
}

.btn-remove:hover {
  color: var(--text);
}

.input-readonly {
  opacity: 0.7;
  cursor: default;
}

.concepts-total-preview {
  margin-top: 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  outline: none;
  resize: vertical;
  min-height: 4rem;
}

.form-group textarea:focus {
  border-color: var(--border-hover);
}

.admin-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
}

.admin-list-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.admin-list-item:last-child {
  border-bottom: none;
}

.empty-state {
  padding: 3rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

@media (max-width: 900px) {
  .dashboard-grid,
  .admin-layout {
    grid-template-columns: 1fr;
  }

  .form-row,
  .form-row-4 {
    grid-template-columns: 1fr;
  }

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

  .form-row-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .metrics-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .concepts-table {
    font-size: 0.75rem;
  }

  .concepts-table th:nth-child(3),
  .concepts-table td:nth-child(3) {
    display: none;
  }
}