:root {
  --bain-red: #cc092f;
  --bain-red-dark: #a80726;
  --bain-red-soft: #f7d6dc;
  --bain-gold: #b08d57;
  --bain-gold-light: #f5efe4;
  --ink: #222222;
  --muted: #666666;
  --line: #dddddd;
  --panel: #ffffff;
  --page-bg: #f7f7f7;
  --success: #1a7f4b;
  --warn: #b45309;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  background: var(--page-bg);
  color: var(--ink);
  line-height: 1.5;
}

a {
  color: inherit;
}

/* Top bar */
.topbar {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-mark {
  color: var(--bain-red);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-sub {
  color: var(--muted);
  font-size: 0.78rem;
  font-family: "Segoe UI", system-ui, sans-serif;
}

.topnav {
  display: flex;
  gap: 18px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.92rem;
}

.topnav a {
  text-decoration: none;
  color: var(--muted);
}

.topnav a.active {
  color: var(--bain-red);
  font-weight: 600;
}

/* Page shell */
.page-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 24px 40px;
}

.tool-header {
  margin-bottom: 22px;
}

.tool-header.compact {
  margin-bottom: 18px;
}

.tool-eyebrow {
  margin: 0 0 6px;
  color: var(--bain-red);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.tool-title {
  margin: 0 0 10px;
  font-size: 2.35rem;
  font-weight: 400;
  line-height: 1.15;
}

/* Matches "quality" screenshot: italic serif + crimson-to-violet gradient */
.title-accent {
  font-family: "Libre Baskerville", "Times New Roman", Georgia, serif;
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0.01em;
  background: linear-gradient(
    90deg,
    #a30034 0%,
    #8e2477 28%,
    #6b238e 58%,
    #4b24a3 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.tool-lead {
  margin: 0 0 10px;
  width: 100%;
  color: var(--muted);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.98rem;
}

.tool-lead strong {
  color: var(--bain-red);
}

.column-summary-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 14px;
  width: 100%;
  padding: 14px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--bain-red);
  border-radius: 4px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.98rem;
}

.column-summary-list {
  margin: 0;
  padding: 0;
  list-style: none;
  flex: 1;
}

.column-summary-list li {
  padding: 4px 0;
  color: var(--ink);
}

.column-summary-list li strong {
  color: var(--ink);
  font-weight: 700;
}

.sample-download-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-shrink: 0;
  min-width: 180px;
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.sample-download-label {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.sample-download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border: 1px solid var(--bain-red);
  border-radius: 4px;
  background: #fff;
  color: var(--bain-red);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease;
}

.sample-download-btn:hover {
  background: var(--bain-red);
  color: #fff;
}

/* Workflow bar */
.workflow-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.workflow-step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  min-width: 180px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.86rem;
}

.workflow-step.active {
  background: var(--bain-gold-light);
  border-color: #dbc9a8;
}

.workflow-step.done {
  background: #fff;
}

.workflow-step.success-step {
  border-color: #9fd4b3;
  background: #eef8f1;
}

.workflow-step.warn-step {
  border-color: #f0c987;
  background: #fff8eb;
}

.workflow-step strong {
  display: block;
  font-size: 0.88rem;
}

.workflow-step span {
  color: var(--muted);
  font-size: 0.78rem;
}

.step-icon {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  background: #efefef;
  font-size: 0.9rem;
}

.step-icon.gold {
  background: var(--bain-gold-light);
  color: var(--bain-gold);
}

.workflow-arrow {
  color: #aaa;
  font-family: "Segoe UI", system-ui, sans-serif;
}

/* Episode variables panel */
.loop-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 16px 18px;
  margin-bottom: 20px;
}

.loop-panel-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.loop-label {
  display: block;
  margin-bottom: 8px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.45;
}

.loop-input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.92rem;
}

.loop-input:focus {
  outline: none;
  border-color: var(--bain-red);
  box-shadow: 0 0 0 2px rgba(204, 9, 47, 0.12);
}

.loop-hint {
  margin: 8px 0 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.78rem;
  color: var(--muted);
}

/* Alerts */
.alert-stack {
  margin-bottom: 16px;
}

.alert {
  padding: 12px 14px;
  border-radius: 4px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.92rem;
}

.alert.error {
  background: #fde8ec;
  color: #8b1028;
  border: 1px solid #efb8c2;
}

/* Input grid */
.input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}

.input-grid-single {
  grid-template-columns: 1fr;
  width: 100%;
}

.input-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.input-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: #fafafa;
}

.input-card-labels {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.input-card-title {
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
}

.field-note {
  font-weight: 400;
  font-style: italic;
  color: var(--muted);
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 3px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.pill-gold {
  background: var(--bain-gold-light);
  color: #7a6138;
}

.pill-red {
  background: #fde8ec;
  color: var(--bain-red);
}

.pill-outline-gold {
  background: transparent;
  border: 1px solid #cdb891;
  color: #7a6138;
}

.input-panel {
  padding: 16px;
}

.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  border: 1px dashed #cfcfcf;
  border-radius: 4px;
  background: #fff;
  cursor: pointer;
  text-align: center;
  padding: 20px;
  transition: border-color 0.2s, background 0.2s;
}

.dropzone:hover,
.dropzone.dragover,
.dropzone.has-file {
  border-color: var(--bain-red);
  background: #fffafb;
}

.dropzone input {
  display: none;
}

.dropzone-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.dropzone-icon.gold-icon {
  color: var(--bain-gold);
}

.dropzone-title {
  margin: 0 0 4px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 1rem;
  font-weight: 600;
}

.dropzone-hint {
  margin: 0 0 10px;
  color: var(--muted);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.82rem;
}

.dropzone-file {
  margin: 0;
  color: var(--bain-red);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.82rem;
  word-break: break-all;
}

/* Run button */
.run-btn {
  width: 100%;
  border: none;
  border-radius: 4px;
  background: var(--bain-red);
  color: #fff;
  padding: 16px 20px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  display: inline-block;
}

.run-btn:hover {
  background: var(--bain-red-dark);
}

.run-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.inline-btn {
  width: auto;
  min-width: 280px;
}

.ghost-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  color: var(--ink);
  text-decoration: none;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
}

/* Results page */
.results-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 20px;
  border-radius: 4px;
  margin-bottom: 18px;
  border: 1px solid var(--line);
  background: #fff;
}

.results-banner.passed {
  border-left: 4px solid var(--success);
}

.results-banner.failed {
  border-left: 4px solid var(--warn);
}

.results-banner h2 {
  margin: 0 0 4px;
  font-size: 1.35rem;
  font-weight: 400;
}

.results-banner p {
  margin: 0;
  color: var(--muted);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.88rem;
}

.results-banner-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.results-summary-card,
.panel-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 18px 20px;
  margin-bottom: 18px;
}

.section-title {
  margin: 0 0 14px;
  font-size: 1.25rem;
  font-weight: 400;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.summary-grid-five {
  grid-template-columns: repeat(5, 1fr);
}

.summary-grid-six {
  grid-template-columns: repeat(6, 1fr);
}

.summary-item {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 14px 12px;
  text-align: center;
  background: #fafafa;
}

.summary-item.highlight {
  background: var(--bain-gold-light);
  border-color: #dbc9a8;
}

.summary-item.accent {
  background: #fde8ec;
  border-color: #efb8c2;
}

.summary-item.warn .summary-value {
  color: var(--warn);
}

.summary-value {
  display: block;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--bain-red);
}

.summary-label {
  display: block;
  margin-top: 4px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.78rem;
  color: var(--muted);
}

.validation-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.validation-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.86rem;
  background: #fafafa;
}

.validation-row.pass .validation-value {
  color: var(--success);
  font-weight: 700;
}

.validation-row.fail .validation-value {
  color: var(--bain-red);
  font-weight: 700;
}

.validation-label {
  color: var(--muted);
}

.notice-box {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 4px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.88rem;
}

.notice-box h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
}

.error-notice {
  background: #fde8ec;
  border: 1px solid #efb8c2;
}

.warn-notice {
  background: #fff8eb;
  border: 1px solid #f0c987;
}

.notice-box ul,
.code-list {
  margin: 0;
  padding-left: 18px;
}

.table-scroll {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.84rem;
}

.data-table th,
.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: #fafafa;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.data-table .row-changed {
  background: #f7fbff;
}

code {
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.82rem;
  background: #f3f3f3;
  padding: 2px 5px;
  border-radius: 3px;
}

/* Footer */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--line);
  margin-top: 20px;
}

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--muted);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.76rem;
}

.footer-links {
  color: var(--bain-red);
}

.footer-note {
  line-height: 1.45;
}

@media (max-width: 900px) {
  .input-grid,
  .summary-grid,
  .summary-grid-five,
  .summary-grid-six,
  .validation-grid {
    grid-template-columns: 1fr 1fr;
  }

  .results-banner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .topbar-inner,
  .page-shell,
  .footer-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  .tool-title {
    font-size: 1.75rem;
  }

  .column-summary-box {
    flex-direction: column;
    align-items: stretch;
    max-width: none;
  }

  .sample-download-inner {
    width: 100%;
    min-width: 0;
    padding-left: 0;
    padding-top: 14px;
    border-left: none;
    border-top: 1px solid var(--line);
  }

  .input-grid,
  .summary-grid,
  .validation-grid {
    grid-template-columns: 1fr;
  }

  .workflow-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .workflow-arrow {
    display: none;
  }

  .inline-btn,
  .ghost-btn,
  .run-btn {
    width: 100%;
  }
}