/* ============================================
   4c Strategic Finance — Shared Stylesheet
   ============================================ */

:root {
  --navy: #1a2e3f;
  --navy-deep: #0f1f2e;
  --navy-soft: #2a4257;
  --teal: #2d6478;
  --teal-bright: #3a7d94;
  --cream: #f7f3ea;
  --cream-warm: #ede5d3;
  --paper: #fafaf7;
  --ink: #1a2e3f;
  --ink-soft: #4a5968;
  --rule: #d8d2c2;
  --gold: #b08d57;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s ease;
}
.nav.scrolled {
  border-bottom-color: var(--rule);
  padding: 0.875rem 3rem;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--navy);
}
.nav-brand-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.nav-brand-text span { color: var(--teal); }
.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}
.nav-links a {
  color: var(--navy);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--teal);
  transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--teal); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  background: var(--navy);
  color: var(--cream) !important;
  padding: 0.625rem 1.5rem;
  border-radius: 2px;
  transition: background 0.3s !important;
}
.nav-cta:hover { background: var(--teal) !important; }
.nav-cta::after { display: none; }
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--navy);
  margin: 5px 0;
  transition: all 0.3s;
}

/* ---------- Buttons ---------- */
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 1rem 2rem;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all 0.3s ease;
  border-radius: 2px;
  cursor: pointer;
  border: none;
  font-family: inherit;
}
.btn-primary {
  background: var(--navy);
  color: var(--cream);
}
.btn-primary:hover {
  background: var(--teal);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -8px rgba(26, 46, 63, 0.3);
}
.btn-secondary {
  background: transparent;
  color: var(--navy);
  border: 1px solid var(--navy);
}
.btn-secondary:hover {
  background: var(--navy);
  color: var(--cream);
}
.btn-arrow { transition: transform 0.3s; }
.btn-primary:hover .btn-arrow,
.btn-secondary:hover .btn-arrow { transform: translateX(4px); }

/* ---------- Detail Page Hero ---------- */
.page-hero {
  padding: 9rem 3rem 5rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 50%;
  height: 100%;
  background:
    radial-gradient(circle at 80% 30%, rgba(45, 100, 120, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 60% 70%, rgba(26, 46, 63, 0.05) 0%, transparent 50%);
  pointer-events: none;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
  font-weight: 500;
}
.breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--teal); }
.breadcrumb-sep { color: var(--rule); }
.breadcrumb-current { color: var(--teal); }

.page-eyebrow {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 500;
}
.page-eyebrow::before {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--teal);
}

.page-hero h1 {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.05;
  font-weight: 500;
  color: var(--navy);
  margin-bottom: 1.5rem;
  letter-spacing: -0.015em;
  max-width: 900px;
}
.page-hero h1 em {
  font-style: italic;
  color: var(--teal);
}
.page-hero-sub {
  font-size: 1.1875rem;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 720px;
}

/* ---------- Content Sections ---------- */
.detail-section {
  padding: 5rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}
.detail-section.alt {
  background: var(--cream);
  max-width: 100%;
  padding-left: 3rem;
  padding-right: 3rem;
}
.detail-section.alt .detail-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 500;
  margin-bottom: 1.25rem;
  display: inline-block;
}
.section-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2rem, 3.5vw, 3rem);
  line-height: 1.1;
  font-weight: 500;
  color: var(--navy);
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}
.section-title em {
  font-style: italic;
  color: var(--teal);
}
.section-sub {
  font-size: 1.0625rem;
  color: var(--ink-soft);
  line-height: 1.7;
  max-width: 720px;
  margin-bottom: 3rem;
}

/* ---------- Two-column content ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 4rem;
  align-items: start;
}
.two-col-narrow { grid-template-columns: 1fr 1fr; gap: 3rem; }

.lead-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  line-height: 1.5;
  color: var(--navy);
  font-weight: 500;
  font-style: italic;
}

.body-prose p {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 1.25rem;
}
.body-prose p:last-child { margin-bottom: 0; }
.body-prose strong { color: var(--navy); font-weight: 600; }

/* ---------- Feature/Capability Grid ---------- */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}
.capability {
  padding: 2rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  transition: all 0.3s ease;
}
.detail-section.alt .capability { background: #fff; }
.capability:hover {
  border-color: var(--teal);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -12px rgba(26, 46, 63, 0.1);
}
.capability-num {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 1.125rem;
  color: var(--teal);
  margin-bottom: 0.75rem;
}
.capability h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}
.capability p {
  font-size: 0.9375rem;
  color: var(--ink-soft);
  line-height: 1.7;
}

/* ---------- Deliverables list ---------- */
.deliverables {
  list-style: none;
  padding: 0;
  margin-top: 2rem;
}
.deliverables li {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.deliverables li:last-child { border-bottom: none; }
.deliverables-num {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 1.125rem;
  color: var(--teal);
  flex-shrink: 0;
  min-width: 2.5rem;
}
.deliverables-content h4 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.375rem;
}
.deliverables-content p {
  font-size: 0.9375rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

/* ---------- CTA Section ---------- */
.cta-block {
  background: var(--navy);
  color: var(--cream);
  padding: 5rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(45, 125, 148, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(45, 125, 148, 0.1) 0%, transparent 40%);
  pointer-events: none;
}
.cta-inner {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.cta-block .section-eyebrow { color: var(--teal-bright); }
.cta-block h2 {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 500;
  color: var(--cream);
  margin-bottom: 1.25rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.cta-block h2 em { font-style: italic; color: var(--teal-bright); }
.cta-block p {
  font-size: 1.0625rem;
  color: rgba(247, 243, 234, 0.85);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}
.cta-block .btn-primary {
  background: var(--teal);
  color: var(--cream);
}
.cta-block .btn-primary:hover {
  background: var(--cream);
  color: var(--navy);
}

/* ---------- Related/Other ---------- */
.related-section {
  padding: 5rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.related-card {
  display: block;
  padding: 2rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  text-decoration: none;
  transition: all 0.3s ease;
}
.related-card:hover {
  border-color: var(--teal);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -12px rgba(26, 46, 63, 0.1);
}
.related-card-tag {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.related-card h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.related-card p {
  font-size: 0.875rem;
  color: var(--ink-soft);
  line-height: 1.6;
}
.related-card-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 500;
  transition: gap 0.3s;
}
.related-card:hover .related-card-arrow { gap: 0.625rem; }

/* ---------- Footer ---------- */
footer {
  background: var(--navy-deep);
  color: rgba(247, 243, 234, 0.7);
  padding: 4rem 3rem 2rem;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(247, 243, 234, 0.1);
}
.footer-brand-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  color: var(--cream);
  margin-bottom: 1rem;
  font-weight: 500;
}
.footer-tagline {
  color: rgba(247, 243, 234, 0.6);
  font-size: 0.9375rem;
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h4 {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--teal-bright);
  margin-bottom: 1.25rem;
  font-weight: 600;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: 0.625rem; }
.footer-col a {
  color: rgba(247, 243, 234, 0.7);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--teal-bright); }
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: rgba(247, 243, 234, 0.5);
}
.footer-bottom a {
  color: rgba(247, 243, 234, 0.5);
  text-decoration: none;
  margin-left: 1.5rem;
}
.footer-bottom a:hover { color: var(--teal-bright); }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .two-col, .two-col-narrow { grid-template-columns: 1fr; gap: 2rem; }
  .capability-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav { padding: 1rem 1.5rem; }
  .nav.scrolled { padding: 0.75rem 1.5rem; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--paper);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--rule);
  }
  .nav-links.open { display: flex; }
  .menu-toggle { display: block; }

  .page-hero { padding: 7rem 1.5rem 3rem; }
  .detail-section, .detail-section.alt, .cta-block, .related-section {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    padding-top: 4rem;
    padding-bottom: 4rem;
  }
  .footer-inner { grid-template-columns: 1fr; gap: 2.5rem; padding: 0 1.5rem 3rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; padding: 2rem 1.5rem 0; text-align: center; }
  .footer-bottom a { margin: 0 0.75rem; }
}