/* ============================================
   The Whitepaper Decoded - Styles
   ============================================ */

/* ---- Reading Progress Bar ---- */
.wp-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 1002;
  background: transparent;
  pointer-events: none;
}

.wp-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-gold));
  transition: width 0.1s linear;
  border-radius: 0 2px 2px 0;
}

/* ---- Hero Section ---- */
.wp-hero {
  position: relative;
  padding: 158px 24px 48px;
  text-align: center;
  z-index: 1;
}

.wp-hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 100px;
  background: rgba(247, 147, 26, 0.1);
  border: 1px solid rgba(247, 147, 26, 0.25);
  color: var(--accent-orange);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
  animation: fadeInDown 0.8s ease;
}

.wp-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.wp-hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto 32px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.wp-hero-quote {
  max-width: 680px;
  margin: 0 auto 36px;
  padding: 24px 32px;
  background: rgba(247, 147, 26, 0.04);
  border-left: 3px solid var(--accent-orange);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.wp-hero-quote p {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.8;
  margin-bottom: 8px;
}

.wp-hero-quote cite {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: normal;
}

.wp-hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.wp-hero-actions .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ---- Timeline Section ---- */
.wp-timeline {
  padding: 0 0 64px;
  position: relative;
  z-index: 1;
}

.wp-timeline-track {
  display: flex;
  align-items: flex-start;
  gap: 0;
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.wp-timeline-track::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 24px;
  right: 24px;
  height: 2px;
  background: var(--border-subtle);
}

.wp-timeline-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  padding: 0 8px;
}

.wp-timeline-year {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-orange);
  margin-bottom: 12px;
  white-space: nowrap;
}

.wp-timeline-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--text-muted);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.wp-timeline-dot.active {
  border-color: var(--accent-orange);
  background: var(--accent-orange);
  box-shadow: 0 0 12px rgba(247, 147, 26, 0.4);
}

.wp-timeline-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.wp-timeline-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
  max-width: 180px;
}

/* ---- Main Layout ---- */
.wp-main {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 80px;
  position: relative;
  z-index: 1;
}

/* ---- Desktop Sidebar ---- */
.wp-sidebar {
  position: sticky;
  top: 100px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  scrollbar-width: none;
}

.wp-sidebar::-webkit-scrollbar {
  display: none;
}

.wp-sidebar-title {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
  padding: 0 12px;
}

.wp-sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.wp-sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.3s;
  border-left: 2px solid transparent;
  text-decoration: none;
}

.wp-sidebar-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.wp-sidebar-link.active {
  color: var(--accent-orange);
  background: rgba(247, 147, 26, 0.06);
  border-left-color: var(--accent-orange);
  font-weight: 600;
}

.wp-sidebar-num {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  flex-shrink: 0;
}

.wp-sidebar-link.active .wp-sidebar-num {
  background: rgba(247, 147, 26, 0.15);
  color: var(--accent-orange);
}

.wp-sidebar-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---- Mobile Navigation ---- */
.wp-mobile-nav {
  display: none;
  position: sticky;
  top: 76px;
  z-index: 100;
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 0;
  margin-bottom: 24px;
}

.wp-mobile-nav-inner {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 0 24px;
}

.wp-mobile-nav-inner::-webkit-scrollbar {
  display: none;
}

.wp-mobile-pill {
  flex-shrink: 0;
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  font-family: var(--font-main);
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  transition: all 0.3s;
  white-space: nowrap;
  cursor: pointer;
}

.wp-mobile-pill:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.wp-mobile-pill.active {
  color: #000;
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-gold));
  border-color: transparent;
  font-weight: 600;
}

/* ---- Section Cards ---- */
.wp-content {
  min-width: 0;
}

.wp-section-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 48px;
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s;
}

.wp-section-card:hover {
  border-color: var(--border-color);
}

.wp-section-number {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.03);
  position: absolute;
  top: 16px;
  right: 32px;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.wp-section-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 24px;
}

/* Key Insight Callout */
.wp-key-insight {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  background: rgba(247, 147, 26, 0.06);
  border: 1px solid rgba(247, 147, 26, 0.15);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}

.wp-key-insight-icon {
  flex-shrink: 0;
  color: var(--accent-orange);
  margin-top: 2px;
}

.wp-key-insight-text {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.7;
}

.wp-key-insight-text strong {
  color: var(--accent-orange);
  font-weight: 700;
}

/* Original Quote Block */
.wp-quote {
  padding: 20px 24px;
  background: rgba(255, 255, 255, 0.02);
  border-left: 3px solid var(--accent-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 24px;
}

.wp-quote p {
  font-style: italic;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin: 0;
}

/* Decoded Explanation */
.wp-decoded {
  margin-bottom: 24px;
}

.wp-decoded-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-orange);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.wp-decoded p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 12px;
}

.wp-decoded p:last-child {
  margin-bottom: 0;
}

/* Concept Tags */
.wp-concept-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.wp-concept-tag {
  padding: 5px 14px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(247, 147, 26, 0.1);
  color: var(--accent-orange);
  border: 1px solid rgba(247, 147, 26, 0.2);
  cursor: pointer;
  transition: all 0.3s;
}

.wp-concept-tag:hover {
  background: rgba(247, 147, 26, 0.2);
  border-color: var(--accent-orange);
}

/* Expandable Original Text */
.wp-original {
  border-top: 1px solid var(--border-subtle);
  padding-top: 20px;
}

.wp-original-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font-main);
  padding: 8px 0;
  transition: color 0.3s;
  background: none;
  border: none;
  cursor: pointer;
}

.wp-original-toggle:hover {
  color: var(--accent-orange);
}

.wp-original-chevron {
  transition: transform 0.3s;
}

.wp-original.open .wp-original-chevron {
  transform: rotate(180deg);
}

.wp-original-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.wp-original.open .wp-original-content {
  max-height: 2000px;
}

.wp-original-content p {
  padding: 16px 0 8px;
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.9;
  font-style: italic;
}

/* ---- Tooltip ---- */
.wp-tooltip {
  position: fixed;
  z-index: 5000;
  max-width: 300px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s, transform 0.2s;
}

.wp-tooltip.visible {
  opacity: 1;
  transform: translateY(0);
}

.wp-tooltip-content {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.wp-tooltip-content strong {
  color: var(--accent-orange);
  display: block;
  margin-bottom: 4px;
}

/* ---- Glossary Section ---- */
.wp-glossary {
  padding: 80px 0;
  background: var(--bg-secondary);
  position: relative;
  z-index: 1;
}

.wp-glossary-header {
  text-align: center;
  margin-bottom: 48px;
}

.wp-glossary-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.wp-glossary-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
}

.wp-glossary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.wp-glossary-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color 0.3s, transform 0.3s;
}

.wp-glossary-item:hover {
  border-color: var(--border-color);
  transform: translateY(-2px);
}

.wp-glossary-term {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-orange);
  margin-bottom: 8px;
}

.wp-glossary-def {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
  margin: 0;
}

/* ---- CTA Section ---- */
.wp-cta {
  padding: 80px 24px;
  position: relative;
  z-index: 1;
}

.wp-cta .cta-card {
  text-align: center;
}

.wp-cta-links {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
  margin-bottom: 24px;
}

.wp-cta .cta-note {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ---- Scroll Reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Responsive: 968px ---- */
@media (max-width: 968px) {
  .wp-hero {
    padding-top: 138px;
  }

  .wp-main {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .wp-sidebar {
    display: none;
  }

  .wp-mobile-nav {
    display: block;
  }

  .wp-timeline-track {
    flex-direction: column;
    gap: 24px;
    align-items: flex-start;
    padding-left: 48px;
  }

  .wp-timeline-track::before {
    top: 0;
    bottom: 0;
    left: 30px;
    width: 2px;
    height: auto;
    right: auto;
  }

  .wp-timeline-item {
    flex-direction: row;
    gap: 16px;
    text-align: left;
    padding: 0;
    align-items: flex-start;
  }

  .wp-timeline-year {
    min-width: 100px;
    margin-bottom: 0;
  }

  .wp-timeline-dot {
    margin-bottom: 0;
    margin-top: 2px;
    position: absolute;
    left: -25px;
  }

  .wp-timeline-label {
    font-size: 0.9rem;
  }

  .wp-timeline-desc {
    max-width: none;
  }

  .wp-section-card {
    padding: 36px 28px;
  }
}

/* ---- Responsive: 768px ---- */
@media (max-width: 768px) {
  .wp-hero {
    padding-top: 120px;
    padding-bottom: 32px;
  }

  .wp-hero-title {
    font-size: 1.8rem;
  }

  .wp-hero-subtitle {
    font-size: 0.95rem;
  }

  .wp-hero-quote {
    padding: 18px 20px;
  }

  .wp-hero-quote p {
    font-size: 0.95rem;
  }

  .wp-mobile-nav {
    top: 72px;
  }

  .wp-section-card {
    padding: 28px 20px;
  }

  .wp-section-number {
    font-size: 3.5rem;
  }

  .wp-section-title {
    font-size: 1.3rem;
  }

  .wp-glossary {
    padding: 60px 0;
  }

  .wp-glossary-grid {
    grid-template-columns: 1fr;
  }

  .wp-timeline {
    padding-bottom: 40px;
  }
}

/* ---- Responsive: 480px ---- */
@media (max-width: 480px) {
  .wp-hero {
    padding-top: 110px;
  }

  .wp-hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .wp-hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .wp-section-card {
    padding: 24px 16px;
    margin-bottom: 20px;
    border-radius: var(--radius-lg);
  }

  .wp-section-number {
    font-size: 2.5rem;
    top: 12px;
    right: 16px;
  }

  .wp-key-insight {
    flex-direction: column;
    gap: 10px;
  }

  .wp-quote {
    padding: 16px 18px;
  }

  .wp-cta-links {
    flex-direction: column;
    align-items: center;
  }

  .wp-cta-links .btn {
    width: 100%;
    justify-content: center;
  }

  .wp-timeline-track {
    padding-left: 40px;
  }

  .wp-timeline-year {
    min-width: 80px;
    font-size: 0.7rem;
  }
}