/* =================================================================
   INSTITUTIONAL BRIEFINGS - CLASSIC WHITE PROFESSIONAL DESIGN
   Inspired by: McKinsey Reports + Goldman Sachs Research + Law Firms
   ================================================================= */

:root {
  /* Classic Institutional White Palette */
  --navy-primary: #1a2332;
  --navy-secondary: #2d3e50;
  --navy-accent: #3d4f66;
  --gold-primary: #c9a85c;
  --gold-accent: #d4b872;
  --gold-dark: #b8941f;
  
  /* Text Colors - Dark on Light */
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-tertiary: #6a6a6a;
  --text-muted: #8a8a8a;
  
  /* Backgrounds - White/Light */
  --bg-white: #ffffff;
  --bg-cream: #fdfaf5;
  --bg-light: #f8f9fa;
  --bg-section: #fafbfc;
  
  /* Borders */
  --border-primary: #cbd5e0;
  --border-subtle: #e2e8f0;
  --border-light: #edf2f7;
}

/* =================================================================
   TYPOGRAPHY - PREMIUM SERIF + SANS
   ================================================================= */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background: var(--bg-white);
}

/* =================================================================
   HERO SECTION - PROFESSIONAL NAVY
   ================================================================= */
.briefings-hero {
  background: linear-gradient(135deg, #1a2332 0%, #2d3e50 100%);
  padding: 6rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.briefings-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    repeating-linear-gradient(90deg, rgba(255,255,255,0.02) 0px, transparent 1px, transparent 40px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.02) 0px, transparent 1px, transparent 40px);
  pointer-events: none;
}

.briefings-hero .container {
  position: relative;
  z-index: 2;
}

.briefings-hero h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 48px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 400;
  letter-spacing: 0.3px;
  margin-top: 0;
}

/* =================================================================
   CONTAINER AND LAYOUT
   ================================================================= */
.briefings-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
  background: var(--bg-white);
}

.section-title {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 32px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 3px solid var(--gold-primary);
  display: inline-block;
}

/* =================================================================
   FLAGSHIP BRIEFINGS SECTION - PREMIUM CARDS
   ================================================================= */
.flagship-section {
  margin-bottom: 5rem;
}

.briefing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.briefing-card {
  background: var(--bg-white);
  border: 2px solid var(--border-subtle);
  border-radius: 4px;
  padding: 2.5rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.briefing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gold-primary);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.briefing-card:hover::before {
  transform: scaleY(1);
}

.briefing-card:hover {
  border-color: var(--gold-primary);
  box-shadow: 0 8px 30px rgba(26, 35, 50, 0.12);
  transform: translateY(-2px);
}

.briefing-card.flagship {
  border-width: 2px;
  border-color: var(--gold-accent);
  background: linear-gradient(135deg, #ffffff 0%, #fdfaf5 100%);
}

.briefing-card.flagship::after {
  content: 'FLAGSHIP';
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  padding: 0.35rem 0.75rem;
  background: var(--gold-primary);
  color: white;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.2px;
  border-radius: 2px;
}

.classification-badge {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  background: var(--navy-primary);
  color: white;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.3px;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  border-radius: 2px;
}

.classification-badge.small {
  padding: 0.3rem 0.7rem;
  font-size: 9px;
}

.briefing-card h3 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.briefing-card h3 a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.briefing-card h3 a:hover {
  color: var(--gold-primary);
}

.briefing-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-weight: 500;
  line-height: 1.5;
}

.briefing-excerpt {
  font-size: 14px;
  color: var(--text-tertiary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.btn-access {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--navy-primary);
  color: white;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 3px;
  transition: all 0.2s ease;
  border: 2px solid var(--navy-primary);
}

.btn-access:hover {
  background: var(--navy-secondary);
  border-color: var(--navy-secondary);
  transform: translateX(3px);
}

/* =================================================================
   RESEARCH SECTION - LIST VIEW
   ================================================================= */
.research-section {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border-subtle);
}

.briefing-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.briefing-row {
  display: grid;
  grid-template-columns: 200px 1fr 150px;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border-subtle);
  align-items: center;
  transition: all 0.2s ease;
}

.briefing-row:hover {
  background: var(--bg-light);
  padding-left: 1rem;
  padding-right: 1rem;
}

.briefing-meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.briefing-meta time {
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.briefing-content h3 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.briefing-content h3 a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.briefing-content h3 a:hover {
  color: var(--navy-primary);
}

.briefing-content p {
  font-size: 14px;
  color: var(--text-tertiary);
  line-height: 1.6;
  margin: 0;
}

.btn-access-small {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.2rem;
  background: transparent;
  color: var(--navy-primary);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid var(--navy-primary);
  border-radius: 3px;
  transition: all 0.2s ease;
  justify-self: end;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-access-small:hover {
  background: var(--navy-primary);
  color: white;
  transform: translateX(3px);
}

/* =================================================================
   BRIEFING DETAIL PAGE
   ================================================================= */
.briefing-detail {
  background: var(--bg-white);
}

.briefing-header {
  max-width: 900px;
  margin: 0 auto;
  padding: 4rem 2rem 3rem;
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
}

.briefing-header .classification-badge {
  margin-bottom: 2rem;
}

.briefing-header h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 42px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 1rem;
}

.briefing-header .briefing-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.briefing-meta-info {
  display: flex;
  justify-content: center;
  gap: 2rem;
  font-size: 13px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
}

.briefing-detail .container {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* Executive Summary - Premium Box */
.executive-summary {
  background: linear-gradient(135deg, #fdfaf5 0%, #ffffff 100%);
  border-left: 4px solid var(--gold-primary);
  padding: 2.5rem;
  margin: 3rem 0;
  border-radius: 4px;
  border: 1px solid var(--border-light);
}

.executive-summary h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.summary-points {
  list-style: none;
  padding: 0;
  margin: 0;
}

.summary-points li {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  padding-left: 2rem;
  margin-bottom: 1rem;
  position: relative;
}

.summary-points li::before {
  content: '▪';
  position: absolute;
  left: 0;
  color: var(--gold-primary);
  font-size: 20px;
  line-height: 1.8;
}

/* What It Covers Section */
.covers-section {
  margin: 3rem 0;
  padding: 2.5rem;
  background: var(--bg-section);
  border-radius: 4px;
  border: 1px solid var(--border-light);
}

.covers-section h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 26px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.covers-section ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.covers-section li {
  font-size: 15px;
  color: var(--text-secondary);
  padding-left: 1.5rem;
  position: relative;
}

.covers-section li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--gold-primary);
  font-weight: bold;
}

/* Audience Section - Two Column Grid */
.audience-section {
  margin: 3rem 0;
}

.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.audience-box {
  border: 2px solid var(--border-primary);
  border-radius: 4px;
  padding: 2rem;
  background: var(--bg-white);
}

.audience-box.who-for {
  border-color: #48bb78;
  background: linear-gradient(135deg, #f0fff4 0%, #ffffff 100%);
}

.audience-box.who-not-for {
  border-color: #e53e3e;
  background: linear-gradient(135deg, #fff5f5 0%, #ffffff 100%);
}

.audience-box h3 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.audience-box.who-for h3 {
  color: #2f855a;
}

.audience-box.who-not-for h3 {
  color: #c53030;
}

.audience-box ul {
  list-style: none;
  padding: 0;
}

.audience-box li {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 2rem;
  margin-bottom: 0.75rem;
  position: relative;
}

.who-for li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #48bb78;
  font-weight: bold;
  font-size: 18px;
}

.who-not-for li::before {
  content: '✗';
  position: absolute;
  left: 0;
  color: #e53e3e;
  font-weight: bold;
  font-size: 18px;
}

/* Gated Access Section */
.gated-access-section {
  margin: 4rem 0;
  padding: 3rem;
  background: linear-gradient(135deg, #1a2332 0%, #2d3e50 100%);
  border-radius: 4px;
  text-align: center;
}

.access-cta h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 32px;
  font-weight: 600;
  color: white;
  margin-bottom: 1rem;
}

.access-cta p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
}

.btn-primary {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--gold-primary);
  color: white;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary:hover {
  background: var(--gold-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(201, 168, 92, 0.4);
}

/* Access Form */
.access-form-container {
  max-width: 600px;
  margin: 2rem auto 0;
  background: white;
  padding: 2.5rem;
  border-radius: 4px;
}

.access-form-container h3 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 26px;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-description {
  font-size: 14px;
  color: var(--text-tertiary);
  margin-bottom: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-primary);
  border-radius: 3px;
  font-size: 15px;
  transition: border-color 0.2s ease;
  background: var(--bg-white);
  color: var(--text-primary);
}

.form-group input:focus {
  outline: none;
  border-color: var(--gold-primary);
  box-shadow: 0 0 0 3px rgba(201, 168, 92, 0.1);
}

.form-group.checkbox {
  display: flex;
  align-items: center;
}

.form-group.checkbox label {
  margin: 0;
  margin-left: 0.5rem;
  text-transform: none;
  font-weight: 400;
}

/* Disclaimer */
.disclaimer {
  margin-top: 4rem;
  padding: 2rem;
  background: var(--bg-section);
  border-left: 3px solid var(--text-tertiary);
  border-radius: 4px;
}

.disclaimer h4 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.disclaimer p {
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 1.7;
  margin: 0;
}

/* =================================================================
   RESPONSIVE DESIGN
   ================================================================= */
@media (max-width: 768px) {
  .briefings-hero h1 {
    font-size: 36px;
  }

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

  .briefing-row {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

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

  .briefing-header h1 {
    font-size: 32px;
  }

  .btn-access-small {
    justify-self: start;
  }
}

/* =================================================================
   FOOTER - PROFESSIONAL STYLING FOR BRIEFINGS PAGE
   ================================================================= */
.premium-footer {
  background: #1a2332;
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.premium-footer .footer-brand {
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.premium-footer .logo-icon {
  color: var(--gold-primary);
  font-size: 20px;
  font-weight: 700;
}

.premium-footer .logo-text {
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 1.5px;
}

.premium-footer .footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 2rem;
}

.premium-footer .footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.5px;
  transition: color 0.2s ease;
}

.premium-footer .footer-links a:hover {
  color: var(--gold-primary);
}

.premium-footer .footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.premium-footer .footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
  margin: 0;
}

.premium-footer .disclaimer {
  color: rgba(255, 255, 255, 0.4);
  font-size: 12px;
  font-style: italic;
}

@media (max-width: 768px) {
  .premium-footer .footer-links {
    flex-direction: column;
    gap: 1rem;
  }
  
  .premium-footer .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}