/* ==========================================================================
   SOPHISTICATED MINIMALIST DESIGN SYSTEM
   Linear/Stripe/Vercel-level refinement for health tech
   ========================================================================== */

/* ==========================================================================
   TYPOGRAPHY REFINEMENTS
   ========================================================================== */

.handbook-home-hero-title {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-6) 0;
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-text-secondary) 50%, var(--color-text-primary) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 8s ease infinite;
}

.dark .handbook-home-hero-title {
  background: linear-gradient(135deg, var(--color-dark-text-primary) 0%, var(--color-dark-text-secondary) 50%, var(--color-dark-text-primary) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@keyframes gradient-shift {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.handbook-home-hero-description {
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 720px;
  margin: 0 auto var(--space-10);
  font-weight: 400;
  letter-spacing: -0.01em;
}

.dark .handbook-home-hero-description {
  color: var(--color-dark-text-secondary);
}

/* ==========================================================================
   HERO CONVERSION FUNNELS (SUBTLE)
   ========================================================================== */

.hero-pathways {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  align-items: center;
  margin-top: var(--space-10);
  flex-wrap: wrap;
}

.hero-pathway {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 8px;
  transition: all var(--transition-base);
  background: var(--color-bg-secondary);
  backdrop-filter: blur(10px);
}

.dark .hero-pathway {
  background: var(--color-dark-bg-secondary);
  color: var(--color-dark-text-secondary);
}

.hero-pathway:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-primary);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.dark .hero-pathway:hover {
  color: var(--color-dark-text-primary);
  border-color: var(--color-dark-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.hero-pathway-icon {
  width: 16px;
  height: 16px;
  opacity: 0.6;
  transition: opacity var(--transition-base);
}

.hero-pathway:hover .hero-pathway-icon {
  opacity: 1;
}

.hero-pathway-arrow {
  width: 12px;
  height: 12px;
  opacity: 0.4;
  transition: all var(--transition-base);
}

.hero-pathway:hover .hero-pathway-arrow {
  opacity: 1;
  transform: translateX(2px);
}

/* ==========================================================================
   SEARCH BAR REFINEMENTS
   ========================================================================== */

.search-container {
  max-width: 720px;
  margin: 0 auto var(--space-20);
  padding: 0 var(--space-6);
}

.search-input-wrapper {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  height: 72px;
  padding: 0 var(--space-6) 0 calc(var(--space-6) * 2 + 24px);
  font-size: 1.0625rem;
  font-weight: 400;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  border: 1.5px solid var(--color-border-primary);
  border-radius: 16px;
  transition: all var(--transition-base);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 0 0 0 rgba(59, 130, 246, 0);
}

.dark .search-input {
  background-color: var(--color-dark-bg-secondary);
  border-color: var(--color-dark-border);
  color: var(--color-dark-text-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15), 0 0 0 0 rgba(59, 130, 246, 0);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-info-accent);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.12), 0 0 0 4px rgba(59, 130, 246, 0.08);
  transform: translateY(-1px);
}

.dark .search-input:focus {
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2), 0 0 0 4px rgba(59, 130, 246, 0.12);
}

.search-icon {
  position: absolute;
  left: var(--space-6);
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  color: var(--color-text-tertiary);
  pointer-events: none;
  z-index: 1;
  transition: color var(--transition-base);
}

.search-input:focus + .search-icon,
.search-input-wrapper:focus-within .search-icon {
  color: var(--color-info-accent);
}

/* ==========================================================================
   SECTION HEADERS WITH CONVERSION
   ========================================================================== */

.handbook-section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-8);
  gap: var(--space-4);
}

.handbook-section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin: 0;
  padding: 0;
  border: none;
}

.dark .handbook-section-title {
  color: var(--color-dark-text-primary);
}

.handbook-section-title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

.handbook-section-title a:hover {
  color: var(--color-info-accent);
}

.section-conversion-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-tertiary);
  text-decoration: none;
  padding: var(--space-1) var(--space-3);
  border-radius: 6px;
  transition: all var(--transition-base);
  opacity: 0.7;
  white-space: nowrap;
}

.dark .section-conversion-link {
  color: var(--color-dark-text-tertiary);
}

.section-conversion-link:hover {
  opacity: 1;
  color: var(--color-info-accent);
  background-color: var(--color-bg-tertiary);
}

.dark .section-conversion-link:hover {
  background-color: var(--color-dark-bg-tertiary);
}

.section-conversion-link svg {
  width: 12px;
  height: 12px;
}

/* ==========================================================================
   ARTICLE CARDS - PREMIUM REFINEMENTS
   ========================================================================== */

.handbook-article-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr));
  gap: var(--space-6);
  margin-top: var(--space-8);
}

@media (max-width: 640px) {
  .handbook-article-list {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
}

.handbook-article-card {
  position: relative;
  display: block;
  padding: var(--space-7);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: 12px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
}

.dark .handbook-article-card {
  background-color: var(--color-dark-bg-primary);
  border-color: var(--color-dark-border);
}

.handbook-article-card-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  height: 100%;
}

.handbook-article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-text-tertiary) 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

/* Type-specific indicators */
.handbook-article-card-policy::before {
  background: linear-gradient(90deg, var(--color-info-accent) 0%, transparent 60%);
}

.handbook-article-card-blog::before {
  background: linear-gradient(90deg, var(--color-success-accent) 0%, transparent 60%);
}

.handbook-article-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
  transform: translateY(-2px);
}

.dark .handbook-article-card:hover {
  border-color: var(--color-dark-border);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.2);
}

.handbook-article-card:hover::before {
  opacity: 1;
}

.handbook-article-card:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.03);
}

.handbook-article-card-title {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin: 0;
  padding: 0;
  border: none;
  transition: color 0.2s ease;
}

.dark .handbook-article-card-title {
  color: var(--color-dark-text-primary);
}

.handbook-article-card:hover .handbook-article-card-title {
  color: var(--color-info-accent);
}

/* Fallback for h2/h3 tags */
.handbook-article-card h2,
.handbook-article-card h3 {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin: 0;
  padding: 0;
  border: none;
  transition: color 0.2s ease;
}

.dark .handbook-article-card h2,
.dark .handbook-article-card h3 {
  color: var(--color-dark-text-primary);
}

.handbook-article-card:hover h2,
.handbook-article-card:hover h3 {
  color: var(--color-info-accent);
}

.handbook-article-description {
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text-secondary);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.dark .handbook-article-description {
  color: var(--color-dark-text-secondary);
}

.handbook-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-tertiary);
  letter-spacing: 0.01em;
  margin-top: auto;
  padding-top: var(--space-4);
}

.dark .handbook-article-meta {
  color: var(--color-dark-text-tertiary);
}

/* Card conversion badge (subtle) */
.card-conversion-badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
  background-color: var(--color-bg-tertiary);
  border-radius: 4px;
  opacity: 0;
  transform: translateY(-4px);
  transition: all var(--transition-base);
  pointer-events: auto;
  z-index: 10;
  text-decoration: none;
}

.card-conversion-badge:hover {
  opacity: 1 !important;
  color: var(--color-info-accent);
  background-color: var(--color-bg-secondary);
  transform: translateY(0);
}

.dark .card-conversion-badge {
  background-color: var(--color-dark-bg-tertiary);
  color: var(--color-dark-text-tertiary);
}

.handbook-article-card:hover .card-conversion-badge {
  opacity: 1;
  transform: translateY(0);
}

.card-conversion-badge svg {
  width: 10px;
  height: 10px;
}

/* ==========================================================================
   SECTION MORE WITH CONVERSION
   ========================================================================== */

.handbook-section-more {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.dark .handbook-section-more {
  border-top-color: var(--color-dark-border);
}

.handbook-section-more a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-info-accent);
  text-decoration: none;
  transition: all var(--transition-base);
}

.handbook-section-more a:hover {
  color: var(--color-link-hover);
  gap: var(--space-3);
}

.section-more-conversion {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-tertiary);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: 6px;
  transition: all var(--transition-base);
  opacity: 0.7;
}

.dark .section-more-conversion {
  color: var(--color-dark-text-tertiary);
}

.section-more-conversion:hover {
  opacity: 1;
  color: var(--color-info-accent);
  background-color: var(--color-bg-tertiary);
}

.dark .section-more-conversion:hover {
  background-color: var(--color-dark-bg-tertiary);
}

/* ==========================================================================
   REFINED SPACING & LAYOUT
   ========================================================================== */

.handbook-home-hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-24) var(--space-6) var(--space-20);
  text-align: center;
}

@media (max-width: 768px) {
  .handbook-home-hero {
    padding: var(--space-16) var(--space-4) var(--space-12);
  }
}

.handbook-home-sections {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-6) var(--space-24);
}

@media (max-width: 768px) {
  .handbook-home-sections {
    padding: 0 var(--space-4) var(--space-16);
  }
}

.handbook-home-section {
  margin-bottom: var(--space-20);
}

.handbook-home-section:last-child {
  margin-bottom: 0;
}

.handbook-section-description {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-tertiary);
  margin: var(--space-2) 0 var(--space-8) 0;
  font-weight: 400;
}

.dark .handbook-section-description {
  color: var(--color-dark-text-tertiary);
}

/* ==========================================================================
   ANIMATIONS - REFINED
   ========================================================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.handbook-article-card {
  animation: fadeInUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.handbook-article-card:nth-child(1) { animation-delay: 0.03s; }
.handbook-article-card:nth-child(2) { animation-delay: 0.06s; }
.handbook-article-card:nth-child(3) { animation-delay: 0.09s; }
.handbook-article-card:nth-child(4) { animation-delay: 0.12s; }
.handbook-article-card:nth-child(5) { animation-delay: 0.15s; }
.handbook-article-card:nth-child(6) { animation-delay: 0.18s; }

@media (prefers-reduced-motion: reduce) {
  .handbook-home-hero-title {
    animation: none;
  }
  
  .handbook-article-card {
    animation: none;
  }
  
  .handbook-article-card:hover {
    transform: none;
  }
}

/* ==========================================================================
   RESPONSIVE GRID REFINEMENTS
   ========================================================================== */

@media (min-width: 768px) {
  .handbook-article-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1280px) {
  .handbook-article-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .search-input {
    height: 56px;
    font-size: 16px;
    padding: 0 var(--space-4) 0 calc(var(--space-4) * 2 + 20px);
  }
  
  .search-icon {
    left: var(--space-4);
    width: 20px;
    height: 20px;
  }
  
  .hero-pathways {
    flex-direction: column;
    align-items: stretch;
  }
  
  .hero-pathway {
    justify-content: center;
  }
  
  .handbook-section-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .section-conversion-link {
    align-self: flex-end;
  }
}