/* research.css — State of Dual CX research report page */
/* Supplements base.css + style.css + site.css */

/* ============================================
   RESEARCH HERO
   ============================================ */

.research-hero {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-16) 0 var(--space-12);
}

.research-hero .container {
  max-width: var(--content-default);
}

.research-hero__badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  background-color: var(--color-primary-highlight);
  border: 1px solid rgba(13, 148, 136, 0.2);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-4);
  margin-bottom: var(--space-5);
}

.research-hero__title {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.1;
  margin-bottom: var(--space-3);
}

.research-hero__subtitle {
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  max-width: 60ch;
}

.research-hero__meta {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}

.research-hero__standard {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

.research-hero__standard a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.research-hero__standard a:hover {
  color: var(--color-primary-hover);
}


/* ============================================
   STATS BAR
   ============================================ */

.stats-bar {
  background-color: var(--color-text);
  padding: var(--space-8) 0;
}

.stats-bar__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
}

.stats-bar__item {
  padding: var(--space-4) var(--space-6);
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stats-bar__item:last-child {
  border-right: none;
}

.stats-bar__number {
  font-size: var(--text-xl);
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stats-bar__label {
  font-size: var(--text-xs);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.03em;
}

.stats-bar__item--alert .stats-bar__number {
  color: #f87171;
}

.stats-bar__item--alert .stats-bar__label {
  color: rgba(248, 113, 113, 0.8);
}

@media (max-width: 640px) {
  .stats-bar__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-1);
  }

  .stats-bar__item {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: var(--space-4);
  }

  .stats-bar__item:nth-child(5) {
    grid-column: 1 / -1;
    border-bottom: none;
  }
}


/* ============================================
   TABLE OF CONTENTS
   ============================================ */

.toc {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-8);
  margin: var(--space-10) auto;
  max-width: var(--content-default);
  width: calc(100% - 2 * var(--space-6));
}

.toc__title {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}

.toc__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-1) var(--space-8);
}

.toc__list li {
  max-width: none;
}

.toc__list a {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-1) 0;
  transition: color var(--transition-interactive);
}

.toc__list a:hover {
  color: var(--color-primary);
}

.toc__section-num {
  color: var(--color-primary);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  min-width: 2ch;
}

@media (max-width: 640px) {
  .toc {
    padding: var(--space-5) var(--space-5);
    width: calc(100% - 2 * var(--space-4));
  }

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


/* ============================================
   RESEARCH CONTENT (article body)
   ============================================ */

.research-content {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: 0 var(--space-6) var(--space-24);
}

.research-content .section {
  padding-top: var(--space-12);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-divider);
}

.research-content .section:last-child {
  border-bottom: none;
}

/* Headings */
.research-content h2 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.research-content h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

/* Paragraphs */
.research-content p {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.75;
  margin-bottom: var(--space-5);
  max-width: 72ch;
}

/* Lists */
.research-content ul,
.research-content ol {
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
}

.research-content li {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: var(--space-2);
  max-width: 68ch;
}

/* Links */
.research-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.research-content a:hover {
  color: var(--color-primary-hover);
}

/* Strong */
.research-content strong {
  font-weight: 700;
  color: var(--color-text);
}

/* Figcaption */
.research-content figcaption {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
  line-height: 1.5;
  max-width: 64ch;
}

@media (max-width: 640px) {
  .research-content {
    padding: 0 var(--space-4) var(--space-16);
  }
}


/* ============================================
   CHART / FIGURE
   ============================================ */

.chart-figure {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-8) 0;
  overflow: hidden;
}

.chart-figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

.chart-figure figcaption {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
  line-height: 1.5;
  max-width: 64ch;
}


/* ============================================
   TABLES
   ============================================ */

/* General table wrapper */
.table-wrap {
  margin: var(--space-6) 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  background-color: var(--color-surface);
}

.table-wrap thead tr {
  background-color: var(--color-surface-2);
}

.table-wrap th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.table-wrap td {
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-divider);
  vertical-align: middle;
  line-height: 1.4;
}

.table-wrap tbody tr:last-child td {
  border-bottom: none;
}

.table-wrap tbody tr:nth-child(even) {
  background-color: var(--color-surface-offset);
}

.table-wrap tbody tr:hover {
  background-color: var(--color-primary-highlight);
}

/* Key stats table variant */
.key-stats-table {
  max-width: 520px;
}

.key-stats-table td:nth-child(2),
.key-stats-table td:nth-child(3) {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  text-align: right;
  white-space: nowrap;
}

.key-stats-table th:nth-child(2),
.key-stats-table th:nth-child(3) {
  text-align: right;
}

/* Appendix table (wide, full horizontal scroll) */
.appendix-table-wrap {
  margin: var(--space-6) 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.appendix-table-wrap table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
  font-size: var(--text-sm);
  background-color: var(--color-surface);
}

.appendix-table-wrap thead tr {
  background-color: var(--color-surface-2);
  position: sticky;
  top: 0;
  z-index: 1;
}

.appendix-table-wrap th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.appendix-table-wrap td {
  padding: var(--space-2) var(--space-4);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-divider);
  vertical-align: middle;
  line-height: 1.4;
  white-space: nowrap;
}

.appendix-table-wrap td:first-child,
.appendix-table-wrap td:nth-child(2) {
  white-space: normal;
  min-width: 120px;
}

.appendix-table-wrap tbody tr:last-child td {
  border-bottom: none;
}

.appendix-table-wrap tbody tr:nth-child(even) {
  background-color: var(--color-surface-offset);
}

.appendix-table-wrap tbody tr:hover {
  background-color: var(--color-primary-highlight);
}


/* ============================================
   BADGES
   ============================================ */

/* Status readiness badges */
.badge--green {
  display: inline-flex;
  align-items: center;
  padding: 0.2em 0.65em;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  background-color: rgba(52, 211, 153, 0.15);
  color: #065f46;
  border: 1px solid rgba(52, 211, 153, 0.4);
}

.badge--amber {
  display: inline-flex;
  align-items: center;
  padding: 0.2em 0.65em;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  background-color: rgba(245, 166, 35, 0.15);
  color: #92400e;
  border: 1px solid rgba(245, 166, 35, 0.4);
}

.badge--red {
  display: inline-flex;
  align-items: center;
  padding: 0.2em 0.65em;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  background-color: rgba(239, 68, 68, 0.12);
  color: #991b1b;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Boolean yes/no badges */
.badge--yes {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 600;
  color: #065f46;
}

.badge--yes::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #34d399;
  margin-right: 5px;
  flex-shrink: 0;
}

.badge--no {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-faint);
}

.badge--no::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-divider);
  margin-right: 5px;
  flex-shrink: 0;
}


/* ============================================
   FINDING NUMBERS
   ============================================ */

.finding-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75em;
  height: 1.75em;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: 0.75em;
  font-weight: 700;
  margin-right: var(--space-2);
  flex-shrink: 0;
  vertical-align: middle;
  line-height: 1;
}

/* Align h3 that contains finding-number */
.research-content h3:has(.finding-number) {
  display: flex;
  align-items: center;
}


/* ============================================
   TIER LABELS
   ============================================ */

.tier-label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-4);
  margin: var(--space-6) 0 var(--space-3);
  letter-spacing: 0.02em;
}


/* ============================================
   RANKED LIST
   ============================================ */

.ranked-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-6);
  counter-reset: rank;
}

.ranked-list[style*="counter-reset"] {
  /* Respect inline counter-reset for tier offsets */
}

.ranked-list li {
  counter-increment: rank;
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-divider);
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.6;
  max-width: none;
}

.ranked-list li:last-child {
  border-bottom: none;
}

.ranked-list li::before {
  content: counter(rank);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2em;
  height: 2em;
  border-radius: 50%;
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  line-height: 1;
}


/* ============================================
   SECTOR COUNT
   ============================================ */

.sector-count {
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-faint);
  margin-left: var(--space-2);
}


/* ============================================
   DOWNLOAD SECTION
   ============================================ */

.download-section {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-16) 0;
}

.download-section .container {
  max-width: var(--content-default);
}

.download-section__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-8);
  text-align: center;
}

.download-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.download-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-decoration: none;
  color: var(--color-text);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

.download-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  color: var(--color-text);
}

.download-card__icon {
  font-size: 1.75rem;
  line-height: 1;
}

.download-card__title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
}

.download-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  max-width: 32ch;
}

@media (max-width: 480px) {
  .download-cards {
    grid-template-columns: 1fr;
  }
}


/* ============================================
   BACK TO TOP
   ============================================ */

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  transition:
    color var(--transition-interactive),
    border-color var(--transition-interactive),
    background-color var(--transition-interactive);
  margin: var(--space-8) 0;
}

.back-to-top:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background-color: var(--color-primary-highlight);
}