/* ═══ HEADER ═══ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bg);
  transition: box-shadow 0.3s ease, background-color 0.3s ease;
}

.site-header--scrolled {
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  max-width: 64rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.wordmark {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.wordmark .period {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-links a {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
  letter-spacing: 0.01em;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  color: var(--color-text);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-1);
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}

.theme-toggle:hover {
  color: var(--color-text);
}

/* ═══ HERO ═══ */
.hero {
  padding: clamp(var(--space-20), 12vw, var(--space-32)) 0 clamp(var(--space-16), 8vw, var(--space-24));
}

.hero-headline {
  font-family: var(--font-body);
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
  white-space: nowrap;
}

.hero-subline {
  margin-top: var(--space-6);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 52ch;
  line-height: 1.65;
}

/* Rotating word system */
.rotating-wrapper {
  position: relative;
  display: inline-block;
}

.rotating-sizer {
  visibility: hidden;
  display: inline;
  color: var(--color-accent);
}

.rotating-word {
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  transition: opacity 2.4s ease;
  white-space: nowrap;
  color: var(--color-accent);
}

.rotating-word.visible {
  opacity: 1;
}

.rotating-period {
  color: var(--color-text) !important;
  transition: opacity 2.4s ease;
}

/* ═══ CTA LINK ═══ */
.cta-link {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: gap 0.2s ease;
}

.cta-link:hover {
  gap: var(--space-3);
}

.cta-link .arrow {
  transition: transform 0.2s ease;
}

.cta-link:hover .arrow {
  transform: translateX(2px);
}

/* ═══ SECTIONS ═══ */
.section {
  padding: clamp(var(--space-12), 6vw, var(--space-20)) 0;
}

.label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

/* ═══ RECEIPTS ═══ */
.receipts-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.receipt-item {
  padding: var(--space-6);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 6px;
  transition: box-shadow 0.2s ease, background-color 0.3s ease, border-color 0.3s ease;
}

.receipt-item:hover {
  box-shadow: var(--shadow-md);
}

.receipt-item--linked {
  display: block;
  cursor: pointer;
  color: inherit;
  text-decoration: none;
}

.receipt-date {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  letter-spacing: 0.02em;
}

.receipt-title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 500;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.receipt-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.55;
  font-family: var(--font-body);
  margin-bottom: var(--space-4);
}

.receipt-badge {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: var(--space-1) var(--space-3);
  border-radius: 100px;
  display: inline-block;
}

.receipt-badge--projected {
  background: rgba(197, 64, 45, 0.1);
  color: var(--color-accent);
}

.receipt-badge--confirmed {
  background: rgba(45, 120, 80, 0.1);
  color: #2d7850;
}

[data-theme="dark"] .receipt-badge--confirmed {
  background: rgba(45, 150, 80, 0.15);
  color: #4daa6a;
}

/* ═══ RESEARCH GRID (Homepage) ═══ */
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.research-card {
  padding: var(--space-6);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 6px;
  transition: box-shadow 0.2s ease, background-color 0.3s ease, border-color 0.3s ease;
  display: block;
}

.research-card:hover {
  box-shadow: var(--shadow-md);
}

.research-card h3 {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 500;
  margin: var(--space-3) 0;
  color: var(--color-text);
}

.research-card p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.55;
  font-family: var(--font-body);
}

/* Status badges */
.status-badge {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: var(--space-1) var(--space-3);
  border-radius: 100px;
  display: inline-block;
}

.status-badge--active {
  background: rgba(45, 120, 80, 0.1);
  color: #2d7850;
}

.status-badge--emerging {
  background: rgba(197, 64, 45, 0.1);
  color: var(--color-accent);
}

.status-badge--notyet {
  background: var(--color-surface);
  color: var(--color-text-muted);
}

[data-theme="dark"] .status-badge--active {
  background: rgba(45, 150, 80, 0.15);
  color: #4daa6a;
}

/* ═══ CALLOUT (legacy) ═══ */
.callout {
  padding: var(--space-6) var(--space-8);
  background: var(--color-surface);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 6px 6px 0;
  transition: background-color 0.3s ease;
}

.callout-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.callout p {
  font-size: var(--text-base);
  line-height: 1.65;
}

/* ═══ THOUGHTMODELS SECTION ═══ */
.thoughtmodels-section {
  background: var(--color-surface);
  padding: clamp(var(--space-16), 8vw, var(--space-24)) 0;
  transition: background-color 0.3s ease;
}

.thoughtmodels-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.thoughtmodel-item {
  padding: var(--space-6) 0;
}

.thoughtmodel-name {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.thoughtmodel-question {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-style: italic;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  line-height: 1.5;
}

.thoughtmodel-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 40ch;
}

.thoughtmodels-connector {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.accent-link {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.accent-link:hover {
  opacity: 0.8;
}

/* ═══ CLOSING SECTION ═══ */
.closing-section {
  padding-top: clamp(var(--space-12), 6vw, var(--space-20));
  padding-bottom: clamp(var(--space-16), 8vw, var(--space-24));
}

.closing-line {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-12);
  max-width: 45ch;
  line-height: 1.5;
}

.closing-ctas {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

.closing-cta-group {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.closing-cta-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.55;
}

/* ═══ RESEARCH PAGE ═══ */

.research-track {
  margin-bottom: var(--space-12);
}

.research-track h2 {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 500;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.track-desc {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 60ch;
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.report-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-divider);
}

.report-item:first-child {
  border-top: 1px solid var(--color-divider);
}

.report-title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-accent);
  transition: opacity 0.2s ease;
}

a.report-title:hover {
  opacity: 0.8;
}

.report-meta {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  letter-spacing: 0.02em;
}

.report-thesis {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
  line-height: 1.55;
  max-width: 55ch;
}

/* ═══ REPORTS SECTION ═══ */
.reports-section {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}

.reports-section h2 {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 500;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.reports-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.report-download-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-divider);
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s ease;
}

.report-download-card:first-child {
  border-top: 1px solid var(--color-divider);
}

.report-download-card:hover {
  opacity: 0.8;
}

.report-download-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  margin-top: 2px;
}

.report-download-title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-accent);
  line-height: 1.3;
}

.report-download-meta {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  letter-spacing: 0.02em;
}

.report-download-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
  line-height: 1.55;
  max-width: 55ch;
}

/* ═══ SUBSTACK ARCHIVE ═══ */
.substack-archive {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}

.substack-archive h2 {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 500;
  margin-bottom: var(--space-3);
}

.archive-era {
  margin-bottom: var(--space-8);
}

.archive-era-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
}

.archive-list {
  display: flex;
  flex-direction: column;
}

.archive-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-2) 0;
  gap: var(--space-4);
  transition: color 0.15s ease;
}

.archive-item:hover {
  color: var(--color-accent);
}

.archive-title {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  flex: 1;
}

.archive-date {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ═══ PAGE HEADINGS ═══ */
.page-heading {
  font-family: var(--font-body);
  font-size: var(--text-3xl);
  font-weight: 400;
  margin-bottom: var(--space-8);
}

.page-heading .heading-accent {
  color: var(--color-accent);
}

/* ═══ ABOUT PAGE ═══ */

.about-content p {
  margin-bottom: var(--space-6);
  line-height: 1.7;
  max-width: 65ch;
}

/* ═══ CONSULTING (The Work) PAGE ═══ */

.consulting-content > p {
  margin-bottom: var(--space-6);
  line-height: 1.7;
  max-width: 65ch;
}

/* ═══ CONTACT SECTION ═══ */
.contact-section {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  max-width: 32rem;
}

.contact-section .label {
  margin-bottom: var(--space-4);
}

.contact-lead {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.6;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-start;
}

.btn-primary {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-8);
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: 4px;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: opacity 0.2s ease, background-color 0.3s ease, color 0.3s ease;
}

.btn-primary:hover {
  opacity: 0.85;
}



/* ═══ FOOTER ═══ */
.site-footer {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-12);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copy {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-text);
}

/* ═══ MOBILE ═══ */
@media (max-width: 768px) {
  .page-heading {
    font-size: var(--text-2xl);
  }

  .hero-headline {
    font-size: clamp(1.5rem, 7vw, 2.5rem);
    white-space: normal;
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-bg);
    padding: var(--space-4) var(--space-6) var(--space-6);
    gap: var(--space-4);
    border-bottom: 1px solid var(--color-divider);
    box-shadow: var(--shadow-md);
    transition: background-color 0.3s ease;
  }

  .nav-links.open {
    display: flex;
  }

  .receipts-inner {
    grid-template-columns: 1fr;
  }

  .research-grid {
    grid-template-columns: 1fr;
  }

  .thoughtmodels-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .thoughtmodel-desc {
    max-width: none;
  }

  .closing-ctas {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .report-item {
    flex-direction: column;
    gap: var(--space-2);
  }

  .report-download-card {
    gap: var(--space-3);
  }

  .report-download-icon {
    width: 32px;
    height: 32px;
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .container {
    padding: 0 var(--space-4);
  }
}

@media (max-width: 480px) {
  .hero-headline {
    font-size: 1.5rem;
  }
}