.newsvendor-page {
  min-height: 100vh;
}

.container {
  max-width: 1220px;
  margin: 0 auto;
  padding: 2rem 5% 3rem;
}

.newsvendor-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 1.5rem;
  align-items: start;
}

.newsvendor-content {
  min-width: 0;
  max-width: 100%;
  grid-column: 1;
  overflow: hidden;
}

.newsvendor-content > .panel,
.newsvendor-content .empirical-panel,
.newsvendor-content .data-diagnostics,
.newsvendor-content .decision-confidence {
  min-width: 0;
  max-width: 100%;
}

.newsvendor-page #demand-inputs,
.newsvendor-page #cost-inputs,
.newsvendor-page #results,
.newsvendor-page #charts,
.newsvendor-page #method-routing,
.newsvendor-page #about-newsvendor,
.newsvendor-page #guidance,
.newsvendor-page #methodology,
.newsvendor-page #faq {
  scroll-margin-top: 6rem;
}

.newsvendor-side-nav {
  position: sticky;
  top: 6rem;
  grid-column: 2;
  width: 100%;
  min-width: 0;
  padding: 1rem;
}

.newsvendor-side-nav h2 {
  margin-bottom: 1rem;
}

.newsvendor-side-nav nav {
  display: grid;
  gap: .45rem;
}

.newsvendor-side-nav a {
  min-height: 2.35rem;
  display: flex;
  align-items: center;
  padding: .48rem .7rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  font-size: .88rem;
  font-weight: 720;
  text-decoration: none;
}

.newsvendor-side-nav a:hover,
.newsvendor-side-nav a:focus {
  color: var(--blue-600);
  border-color: rgba(31, 111, 235, .28);
  background: #fff;
}

.section-header,
.results-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-header h2,
.results-header h2 {
  margin: 0 0 .25rem;
}

.section-header p,
.results-header p {
  margin: 0;
  color: var(--text-secondary);
}

.editor-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.privacy-note {
  margin-bottom: 1rem;
}

.input-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.economics-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.input-grid label,
.empirical-entry-grid label {
  display: grid;
  align-content: start;
  gap: .42rem;
  color: var(--navy-950);
  font-size: .92rem;
  font-weight: 760;
}

.input-grid input,
.input-grid select,
.empirical-entry-grid input,
.empirical-entry-grid textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .65rem .75rem;
  background: #fff;
  color: var(--text-primary);
}

.input-grid small {
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1.45;
}

.distribution-help {
  margin: 1rem 0 0;
  padding: .8rem 1rem;
  border-left: 3px solid var(--blue-600);
  background: var(--surface);
  color: var(--text-secondary);
}

.empirical-panel,
.expert-adjustment {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.import-guidance {
  margin-bottom: 1rem;
  padding: 1rem;
  border-left: 3px solid var(--blue-600);
  background: #fff;
}

.import-guidance h3,
.import-guidance p {
  margin-top: 0;
}

.import-guidance p:last-child {
  margin-bottom: 0;
}

.example-row {
  margin: .75rem 0;
  padding: .75rem;
  border-radius: 7px;
  background: var(--blue-100);
  color: var(--navy-800);
  line-height: 1.55;
}

.empirical-entry-grid {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: 1rem;
}

.empirical-entry-grid textarea {
  min-height: 118px;
  resize: vertical;
}

.field-status {
  margin: .75rem 0 0;
  color: var(--text-secondary);
  font-size: .9rem;
  font-weight: 650;
}

.history-type-field {
  display: grid;
  gap: .42rem;
  margin-top: 1rem;
  color: var(--navy-950);
  font-size: .92rem;
  font-weight: 760;
}

.history-type-field select {
  width: 100%;
  min-height: 44px;
  padding: .65rem .75rem;
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.data-diagnostics,
.decision-confidence {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.subsection-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.subsection-heading h3,
.subsection-heading p {
  margin: 0;
}

.subsection-heading p,
.model-comparison-wrap > p {
  color: var(--text-secondary);
}

.status-badge {
  display: inline-flex;
  min-height: 2rem;
  flex: 0 0 auto;
  align-items: center;
  padding: .35rem .65rem;
  color: var(--blue-600);
  border: 1px solid rgba(31, 111, 235, .22);
  border-radius: 999px;
  background: var(--blue-100);
  font-size: .78rem;
  font-weight: 820;
}

.status-badge.is-good {
  color: #067647;
  border-color: #abefc6;
  background: #ecfdf3;
}

.status-badge.is-warning {
  color: #92400e;
  border-color: #fde68a;
  background: #fffbeb;
}

.diagnostic-grid,
.confidence-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .75rem;
}

.diagnostic-grid article,
.confidence-summary-grid article {
  min-width: 0;
  padding: .8rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.diagnostic-grid span,
.confidence-summary-grid span {
  display: block;
  margin-bottom: .35rem;
  color: var(--text-secondary);
  font-size: .76rem;
  font-weight: 820;
  text-transform: uppercase;
}

.diagnostic-grid strong,
.confidence-summary-grid strong {
  display: block;
  color: var(--navy-950);
  font-size: 1.12rem;
  line-height: 1.25;
}

.confidence-summary-grid small {
  display: block;
  margin-top: .4rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.diagnostic-messages {
  margin: .9rem 0 0;
  padding-left: 1.2rem;
  color: var(--text-secondary);
}

.diagnostic-messages li + li {
  margin-top: .35rem;
}

.expert-adjustment summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  color: var(--navy-950);
  cursor: pointer;
  font-weight: 800;
}

.expert-adjustment > p {
  color: var(--text-secondary);
}

.constraint-panel {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.constraint-panel summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  color: var(--navy-950);
  cursor: pointer;
  font-weight: 800;
}

.constraint-panel > p {
  margin-top: 0;
  color: var(--text-secondary);
}

.input-guidance-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.input-guidance-grid article {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.input-guidance-grid h3 {
  margin: 0 0 .45rem;
  font-size: 1rem;
}

.input-guidance-grid p {
  margin: 0;
  color: var(--text-secondary);
  font-size: .92rem;
  line-height: 1.55;
}

.actions {
  margin-top: 1rem;
}

.summary-grid,
.cost-logic-grid,
.outcome-grid {
  display: grid;
  gap: 1rem;
}

.summary-grid,
.cost-logic-grid,
.outcome-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.summary-grid article,
.cost-logic-grid article,
.outcome-grid article {
  min-height: 112px;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.summary-grid span,
.cost-logic-grid span,
.outcome-grid span {
  display: block;
  margin-bottom: .55rem;
  color: var(--text-secondary);
  font-size: .76rem;
  font-weight: 820;
  text-transform: uppercase;
}

.summary-grid strong,
.cost-logic-grid strong,
.outcome-grid strong {
  display: block;
  color: var(--navy-950);
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  line-height: 1.15;
}

.cost-logic-grid {
  margin-top: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cost-logic-grid small {
  display: block;
  margin-top: .45rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.interpretation {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid rgba(31, 111, 235, .22);
  border-left: 4px solid var(--blue-600);
  border-radius: 8px;
  background: #f4f8ff;
  color: var(--text-primary);
  line-height: 1.65;
}

.interpretation h3 {
  margin: 0 0 .5rem;
}

.interpretation p {
  margin: .4rem 0 0;
}

.subsection-title,
.comparison-wrap h3 {
  margin: 1.4rem 0 .8rem;
}

.decision-confidence {
  margin-top: 1.5rem;
  background: #f8fbff;
}

.model-comparison-wrap {
  margin-top: 1.25rem;
}

.model-comparison-wrap h3 {
  margin: 0 0 .25rem;
}

.model-comparison-table {
  min-width: 820px !important;
  table-layout: fixed;
}

.model-comparison-table th:nth-child(1),
.model-comparison-table td:nth-child(1) {
  width: 150px;
  white-space: normal;
  overflow-wrap: break-word;
  line-height: 1.4;
}

.model-comparison-table th:nth-child(2),
.model-comparison-table td:nth-child(2) {
  width: 130px;
}

.model-comparison-table th:nth-child(3),
.model-comparison-table td:nth-child(3) {
  width: 115px;
}

.model-comparison-table th:nth-child(4),
.model-comparison-table td:nth-child(4) {
  width: 95px;
}

.model-comparison-table th:nth-child(5),
.model-comparison-table td:nth-child(5) {
  width: 115px;
}

.model-comparison-table th:last-child,
.model-comparison-table td:last-child {
  width: 215px;
  text-align: left;
  white-space: normal;
  overflow-wrap: break-word;
  line-height: 1.5;
}

.selected-model-row td {
  background: #eff6ff;
  color: var(--navy-950);
  font-weight: 700;
}

.confidence-interpretation {
  margin-top: 1rem;
  padding: 1rem;
  color: var(--text-primary);
  border-left: 4px solid var(--blue-600);
  border-radius: 8px;
  background: #fff;
  line-height: 1.65;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.table-wrap table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.table-wrap th,
.table-wrap td {
  padding: .75rem;
  border-bottom: 1px solid var(--border);
  text-align: right;
  white-space: nowrap;
}

.table-wrap th:first-child,
.table-wrap td:first-child {
  text-align: left;
}

.table-wrap th {
  background: var(--surface);
  color: var(--text-secondary);
  font-size: .78rem;
}

.table-wrap tbody tr:last-child td {
  border-bottom: 0;
}

.optimized-row td {
  background: #f0fdf4;
  color: var(--navy-950);
  font-weight: 700;
}

.scenario-toggle {
  min-width: 220px !important;
  min-height: 58px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 1rem !important;
  padding: .6rem .7rem .6rem 1rem !important;
  border: 1px solid var(--border) !important;
  border-radius: 999px !important;
  background: #f2f4f7 !important;
  color: var(--navy-950) !important;
  box-shadow: none !important;
}

.scenario-toggle[aria-pressed="true"] {
  border-color: rgba(20, 184, 166, .38) !important;
  background: #e8f7f5 !important;
}

.scenario-toggle-text {
  font-size: .92rem;
  font-weight: 850;
}

.scenario-switch {
  position: relative;
  width: 68px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: #d0d5dd;
  transition: background .2s ease;
}

.scenario-switch::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 8px rgba(16, 24, 40, .18);
  transition: transform .2s ease;
}

.scenario-toggle[aria-pressed="true"] .scenario-switch {
  background: #14a7a2;
}

.scenario-toggle[aria-pressed="true"] .scenario-switch::after {
  transform: translateX(30px);
}

.scenario-controls {
  margin-bottom: 1rem;
  padding: 1rem;
  border: 1px solid rgba(31, 111, 235, .2);
  border-radius: 8px;
  background: var(--surface);
}

.scenario-controls label {
  display: block;
  margin-bottom: .6rem;
  font-weight: 800;
}

.scenario-controls input[type="range"] {
  width: 100%;
  accent-color: var(--blue-600);
}

.scenario-readout {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  margin-top: .65rem;
  color: var(--text-secondary);
}

.scenario-readout strong {
  color: var(--navy-950);
}

.chart-stack {
  display: grid;
  gap: 1rem;
}

.chart-card {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.chart-card h3 {
  margin: 0 0 .75rem;
}

.chart-stage {
  width: 100%;
  min-height: 320px;
  overflow: hidden;
}

.chart-stage canvas {
  display: block;
  width: 100%;
  height: auto;
}

.chart-summary {
  margin: .75rem 0 0;
  color: var(--text-secondary);
  line-height: 1.55;
}

.method-routing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin-top: 1rem;
}

.method-route {
  min-height: 88px;
  display: grid;
  align-content: center;
  gap: .25rem;
  padding: 1rem;
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  text-decoration: none;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}

.method-route strong {
  color: var(--navy-950);
}

.method-route span {
  color: var(--text-secondary);
}

.method-route:hover,
.method-route:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(31, 111, 235, .34);
  box-shadow: 0 10px 22px rgba(16, 42, 71, .08);
}

.method-route.current-method {
  border-color: rgba(31, 111, 235, .3);
  background: var(--blue-100);
}

@media (max-width: 1050px) {
  .newsvendor-layout {
    grid-template-columns: 1fr;
  }

  .newsvendor-side-nav {
    position: static;
    grid-column: 1;
    order: -1;
  }

  .newsvendor-side-nav nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .summary-grid,
  .cost-logic-grid,
  .outcome-grid,
  .diagnostic-grid,
  .confidence-summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .container {
    padding: 1rem 4% 2rem;
  }

  .section-header,
  .results-header {
    align-items: stretch;
    flex-direction: column;
  }

  .input-grid,
  .economics-grid,
  .empirical-entry-grid,
  .input-guidance-grid {
    grid-template-columns: 1fr;
  }

  .subsection-heading {
    flex-direction: column;
  }

  .method-routing-grid {
    grid-template-columns: 1fr;
  }

  .newsvendor-side-nav nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scenario-toggle {
    width: 100%;
  }

  .chart-stage {
    min-height: 250px;
  }
}

@media (max-width: 480px) {
  .summary-grid,
  .cost-logic-grid,
  .outcome-grid,
  .diagnostic-grid,
  .confidence-summary-grid,
  .newsvendor-side-nav nav {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .scenario-switch,
  .scenario-switch::after {
    transition: none;
  }
}