:root {
  --bg: #0d0f12;
  --surface: #161a20;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #c9a227;
  --accent-dim: #8a7220;
  --danger: #e05252;
  --positive: #4caf50;
  --border: #2a3038;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --maxw: 1060px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 18px;
  scroll-behavior: smooth;
  scroll-padding-top: 4rem;
  overflow-y: scroll;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 20% -10%, #1a2030 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* ── Header / Footer chrome ─────────────────────────── */

.site-header,
.site-footer {
  border-color: var(--border);
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(13, 15, 18, 0.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.95rem;
  color: var(--text);
}
.brand span {
  color: var(--accent);
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}
.site-nav a {
  color: var(--muted);
  font-size: 0.92rem;
}
.site-nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

/* ── Page meta (Last Updated) ────────────────────────── */

.page-updated {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0 0 0.25rem;
  letter-spacing: 0.02em;
}

/* ── Hero ─────────────────────────────────────────────── */

.hero {
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 0.5rem;
  letter-spacing: 0.01em;
  line-height: 1.25;
}
.lede {
  color: var(--muted);
}

/* ── Page Section Nav ────────────────────────────────── */

.page-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.5rem 0 0.75rem;
  margin-bottom: 1.25rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.page-nav::-webkit-scrollbar { display: none; }

.page-nav-label {
  white-space: nowrap;
  font-size: 0.88rem;
  color: var(--muted);
  align-self: center;
}

.page-nav-link {
  white-space: nowrap;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.88rem;
  color: var(--muted);
  background: var(--bg);
  transition: border-color 0.15s, color 0.15s;
}
.page-nav-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

/* ── Metric Section ──────────────────────────────────── */

.metric-section {
  margin: 2.5rem 0;
  padding-top: 1rem;
}
.metric-section:first-of-type {
  margin-top: 0;
}

.metric-section > h2 {
  font-size: 1.2rem;
  margin: 0 0 0.5rem;
}

.metric-intro {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0 0 1.25rem;
  max-width: 52rem;
}

.metric-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ── CTA Buttons ─────────────────────────────────────── */

.cta-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.01em;
  transition: background 0.15s, border-color 0.15s;
}
.cta-btn:hover {
  text-decoration: none;
}

.cta-btn--primary {
  background: var(--accent);
  color: var(--bg);
  border: 1px solid var(--accent);
}
.cta-btn--primary:hover {
  background: #d4ad2e;
  border-color: #d4ad2e;
}

/* ── Key Stats Bar ────────────────────────────────────── */

.key-stats {
  display: flex;
  gap: 0;
  margin: 1.5rem 0 2rem;
  overflow-x: auto;
}

.key-stat {
  flex: 1 1 0;
  min-width: 140px;
  text-align: center;
  padding: 1rem 0.75rem;
  border-right: 1px solid var(--border);
}
.key-stat:first-child {
  text-align: left;
  padding-left: 0;
}
.key-stat:last-child {
  border-right: none;
}

.key-stat-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

.key-stat-value {
  display: block;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text);
}
.key-stat-value.negative {
  color: var(--danger);
}
.key-stat-value.positive {
  color: var(--positive);
}

.key-stat-desc {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

/* ── Chart Section ────────────────────────────────────── */

.chart-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.35rem;
  margin: 1.5rem 0;
}

.chart-section h2 {
  margin-top: 0;
  font-size: 1.15rem;
}
.chart-subtitle {
  margin: -0.25rem 0 0;
  font-size: 0.82rem;
  color: var(--muted);
  min-height: 1.2em;
}
.chart-subtitle:empty {
  display: none;
}

.estimated-tag {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.35rem;
}

.chart-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin: 0.75rem 0 1rem;
}
.chart-toolbar label {
  font-size: 0.88rem;
  color: var(--muted);
}
.chart-toolbar select,
.chart-toolbar button {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  font: inherit;
  cursor: pointer;
}
.chart-toolbar button.active {
  border-color: var(--accent);
  color: var(--accent);
}

.custom-range-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.5rem;
  font-size: 0.88rem;
}
.custom-range-row[hidden] { display: none; }
.custom-range-row label {
  color: var(--muted);
  font-size: 0.82rem;
}
.custom-range-row input[type="date"] {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.3rem 0.5rem;
  font: inherit;
  font-size: 0.85rem;
  color-scheme: dark;
}
.custom-range-row button {
  background: var(--bg);
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  border-radius: 6px;
  padding: 0.3rem 0.7rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}
.custom-range-row button:hover {
  border-color: var(--accent);
}

.chart-wrap {
  position: relative;
  height: min(420px, 70vh);
  margin-top: 0.5rem;
}

/* ── Callout Stats Grid ───────────────────────────────── */

.callout-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin: 2rem 0;
}

.callout-card {
  background: var(--surface);
  padding: 1rem 1.25rem;
  text-align: center;
}

.callout-label {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.callout-value {
  display: block;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
}

/* ── Panel (still used for home page cards) ───────────── */

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.35rem;
  margin: 1.25rem 0;
}

.panel h2 {
  margin-top: 0;
  font-size: 1.15rem;
}

/* ── Prose (flowing text, no box) ─────────────────────── */

.prose {
  max-width: none;
}
.prose h2 {
  font-size: 1.2rem;
  margin-top: 2.25rem;
  margin-bottom: 0.6rem;
}
.prose h2:first-child {
  margin-top: 0;
}
.prose p {
  margin: 0.75rem 0;
  line-height: 1.65;
}
.prose ul {
  padding-left: 1.2rem;
}
.prose strong {
  color: var(--text);
}
.prose em {
  color: var(--muted);
  font-style: italic;
}

.prose .plain-english {
  color: var(--muted);
  border-left: 3px solid var(--accent-dim);
  padding-left: 1rem;
  margin: 0.75rem 0;
}

/* ── Paradox Cards ───────────────────────────────────── */

.paradox-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin: 1.25rem 0;
}

.paradox-card {
  background: var(--bg);
  padding: 1.25rem 1.35rem;
}

.paradox-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.paradox-card p {
  margin: 0;
  line-height: 1.65;
}

/* ── Comparison Cards (PB vs MM page) ────────────────── */

.compare-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin: 1.5rem 0;
}

.compare-card {
  background: var(--surface);
  padding: 2.5rem 1.35rem 1.25rem;
  text-align: center;
  position: relative;
}

.compare-card-name {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.6rem;
  font-weight: 600;
}
.compare-card--pb .compare-card-name { color: var(--accent); }
.compare-card--mm .compare-card-name { color: #5bb5e0; }

.compare-stat-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.2rem;
}

.compare-stat-value {
  display: block;
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}
.compare-stat-value.negative { color: var(--danger); }
.compare-stat-value.positive { color: var(--positive); }

.compare-stat-desc {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

.compare-stat-group + .compare-stat-group {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.winner-badge {
  position: absolute;
  top: 0.55rem;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--positive);
  border: 1px solid var(--positive);
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  font-weight: 600;
}

/* ── Card Metric Selector (PB vs MM top cards) ──────── */

.card-metric-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.35rem;
}
.card-metric-bar label {
  font-size: 0.88rem;
  color: var(--muted);
}
.card-metric-bar select {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
}
.card-metric-desc {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 1rem;
  line-height: 1.4;
}

/* ── Intro Verdict ───────────────────────────────────── */

.intro-verdict {
  font-size: 1.05rem;
  line-height: 1.65;
  margin: 0.75rem 0 1.5rem;
}
.intro-verdict strong {
  color: var(--text);
}

/* ── Narrative Chart (smaller inline charts) ─────────── */

.narrative-chart {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.15rem;
  margin: 1.5rem 0;
}

.narrative-chart h3 {
  margin: 0 0 0.15rem;
  font-size: 1rem;
}

.narrative-chart-subtitle {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

.narrative-chart-wrap {
  position: relative;
  height: min(300px, 55vh);
}

.chart-legend {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 0.6rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.chart-legend-dot {
  display: inline-block;
  width: 11px;
  height: 11px;
  border-radius: 2px;
  margin-right: 0.4rem;
  vertical-align: middle;
}
.chart-legend-dot--pb { background: var(--accent); }
.chart-legend-dot--mm { background: #5bb5e0; }

/* Era label used in narrative sections */
.era-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.15rem;
  display: block;
}

/* ── Author Page ─────────────────────────────────────── */

.author-photo {
  display: block;
  width: 200px;
  height: auto;
  border-radius: 10px;
  border: 2px solid var(--border);
  float: right;
  margin: 0.25rem 0 1rem 1.5rem;
}

@media (max-width: 680px) {
  .author-photo {
    float: none;
    margin: 0 0 1rem;
  }
}

/* ── Section Divider ──────────────────────────────────── */

.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

/* ── Footer ───────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1.5rem 1.25rem 2rem;
  color: var(--muted);
  font-size: 0.88rem;
}
.site-footer .site-inner {
  display: block;
  max-width: var(--maxw);
  margin: 0 auto;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}
.site-footer .brand {
  font-size: 0.88rem;
}
.footer-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.25rem;
}
.footer-nav a {
  color: var(--muted);
  font-size: 0.88rem;
}
.footer-nav a:hover {
  color: var(--text);
}
.disclaimer {
  margin: 0.5rem 0;
  line-height: 1.5;
}
.copyright {
  margin: 0.75rem 0 0;
  font-size: 0.82rem;
}

/* ── Responsive ───────────────────────────────────────── */

@media (max-width: 680px) {
  .key-stats {
    flex-direction: column;
    gap: 0;
  }
  .key-stat {
    border-right: none;
    border-bottom: 1px solid var(--border);
    text-align: left;
    padding: 0.75rem 0;
  }
  .key-stat:last-child {
    border-bottom: none;
  }
  .paradox-cards,
  .compare-cards {
    grid-template-columns: 1fr;
  }
  .compare-cards {
    gap: 1.5rem;
    background: transparent;
    border: none;
    border-radius: 0;
  }
  .compare-card {
    border: 1px solid var(--border);
    border-radius: 10px;
  }
  .callout-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ── Form Primitives ──────────────────────────────────── */

.form-field {
  flex: 1 1 200px;
}
.form-field label {
  display: block;
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.form-field select,
.form-field input {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  font: inherit;
  font-size: 0.92rem;
}
.form-field input::placeholder {
  color: var(--muted);
  opacity: 0.6;
}

.form-error {
  background: rgba(224, 82, 82, 0.1);
  border: 1px solid var(--danger);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  color: var(--danger);
  font-size: 0.88rem;
  margin-bottom: 1rem;
}
.form-error[hidden] { display: none; }

.form-success {
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid var(--positive);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  color: var(--positive);
  font-size: 0.88rem;
  margin: 1rem 0;
}
.form-success[hidden] { display: none; }

/* ── Modal ────────────────────────────────────────────── */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}
.modal-overlay[hidden] { display: none; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  max-width: 480px;
  width: 100%;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.25rem;
}
.modal-close:hover { color: var(--text); }
.modal-brand {
  text-align: center;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  color: var(--text);
}
.modal-brand span { color: var(--accent); }
.modal h3 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}
.modal p {
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--muted);
  margin: 0.5rem 0;
}
.modal input[type="email"] {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.55rem 0.75rem;
  font: inherit;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}
.modal input[type="email"]::placeholder {
  color: var(--muted);
  opacity: 0.6;
}
.modal .cta-btn {
  width: 100%;
  justify-content: center;
}
.modal-step { display: none; }
.modal-step.active { display: block; }

.manage-sub {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin: 0.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}
.manage-sub-info {
  font-size: 0.88rem;
}
.manage-sub-game {
  font-weight: 600;
  color: var(--text);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.manage-sub-detail {
  color: var(--muted);
  font-size: 0.82rem;
}
.manage-sub-actions {
  display: flex;
  gap: 0.5rem;
}
.manage-sub-actions button {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--muted);
  font-size: 0.78rem;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
}
.manage-sub-actions button:hover {
  color: var(--text);
  border-color: var(--text);
}
.manage-sub-actions .btn-delete:hover {
  color: var(--danger);
  border-color: var(--danger);
}

.manage-account {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.88rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.manage-account[hidden] { display: none; }
.manage-account-sep {
  color: var(--muted);
}

/* ── FAQ ──────────────────────────────────────────────── */

.faq-list {
  margin-top: 1rem;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:first-child {
  border-top: 1px solid var(--border);
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 0;
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "+";
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
  width: 1rem;
  text-align: center;
}
.faq-item[open] summary::before { content: "\2212"; }
.faq-answer {
  padding: 0 0 0.85rem 1.5rem;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.92rem;
}
.faq-answer p { margin: 0.5rem 0; }

/* ── Personal Note ───────────────────────────────────── */

.personal-note {
  border-left: 3px solid var(--accent-dim);
  padding-left: 1.25rem;
  margin: 2rem 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}