/* HARMONIC - Components Stylesheet
   Reusable UI Components
   ==================================== */

/* ==========================================
   CARDS
   ========================================== */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.card-header {
  margin-bottom: var(--space-lg);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.card-description {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--color-accent);
  font-size: 1.25rem;
}

/* Feature Cards */
.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.feature-icon {
  color: var(--color-accent);
  font-size: 1.25rem;
}

/* Demo Cards */
.demo-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.demo-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.demo-card-media {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.demo-card-media img,
.demo-card-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.demo-card:hover .demo-card-media img,
.demo-card:hover .demo-card-media video {
  transform: scale(1.02);
}

.demo-card-content {
  padding: var(--space-lg);
}

.demo-card-tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--color-bg-secondary);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

/* ==========================================
   BADGES & TAGS
   ========================================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary {
  background: var(--color-bg-secondary);
  color: var(--color-accent);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 4px 10px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

/* ==========================================
   MODAL
   ========================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
  transform: scale(0.95);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
}

.modal-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--color-text-tertiary);
  font-size: 1.25rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.modal-body {
  padding: var(--space-lg);
}

.modal-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-md);
}

/* Video Modal */
.video-modal .modal {
  background: transparent;
  border: none;
  max-width: 1000px;
}

.video-modal .modal-body {
  padding: 0;
}

.video-modal video {
  width: 100%;
  border-radius: var(--radius-md);
}

/* Image Modal */
.image-modal .modal {
  background: transparent;
  border: none;
}

.image-modal .modal-body {
  padding: 0;
}

.image-modal img {
  max-width: 100%;
  max-height: 85vh;
  border-radius: var(--radius-md);
}

/* ==========================================
   TABS
   ========================================== */
.tabs {
  display: flex;
  gap: var(--space-xs);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-xl);
}

.tab {
  padding: var(--space-md) var(--space-lg);
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
}

.tab:hover {
  color: var(--color-text-primary);
}

.tab.active {
  color: var(--color-accent);
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* ==========================================
   ACCORDION
   ========================================== */
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-card);
  border: none;
  color: var(--color-primary);
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.accordion-header:hover {
  background: var(--color-bg-secondary);
}

.accordion-icon {
  transition: transform var(--transition-fast);
  color: var(--color-text-tertiary);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.accordion-item.active .accordion-content {
  max-height: 1000px;
}

.accordion-body {
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
}

/* ==========================================
   GLOSSARY
   ========================================== */
.glossary-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  transition: all var(--transition-fast);
}

.glossary-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border-hover);
}

.glossary-term {
  font-weight: 600;
  color: var(--color-accent);
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.glossary-definition {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================
   REFERENCES
   ========================================== */
.reference-item {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.reference-item:last-child {
  border-bottom: none;
}

.reference-number {
  color: var(--color-accent);
  font-weight: 600;
  margin-right: var(--space-sm);
}

/* ==========================================
   CITATION
   ========================================== */
.citation-container {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin: var(--space-lg) 0;
}

.citation-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.citation-button:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-border-hover);
  text-decoration: none;
}

.citation-button i {
  font-size: 1.1rem;
  color: var(--color-accent);
}

.citation-box {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  position: relative;
}

.citation-box pre {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

.citation-content {
  display: none;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin: var(--space-md) auto;
  max-width: 90%;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  white-space: pre-wrap;
  word-break: break-word;
  text-align: left;
}

.copy-button {
  padding: 6px 12px;
  font-size: 0.8rem;
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.copy-button:hover {
  background: var(--color-accent-hover);
}

/* ==========================================
   BOOK SHOWCASE
   ========================================== */
.book-showcase {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin: var(--space-xl) 0;
  flex-wrap: wrap;
}

.book-item {
  text-align: center;
  max-width: 220px;
  text-decoration: none;
}

.book-item img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
}

.book-item:hover img {
  transform: scale(1.02);
}

.book-item p {
  margin-top: var(--space-sm);
  font-weight: 500;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* ==========================================
   CAPABILITY SECTIONS
   ========================================== */
.capability-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.capability-section {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.capability-title {
  color: var(--color-primary);
  background: var(--color-bg-secondary);
  margin: 0;
  text-align: center;
  padding: var(--space-md) var(--space-lg);
  font-size: 1rem;
  font-weight: 600;
}

.capability-list {
  padding: var(--space-lg);
  padding-left: var(--space-2xl);
  margin: 0;
  list-style-type: disc;
}

.capability-list li {
  padding: 4px 0;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* ==========================================
   PUBLICATIONS
   ========================================== */
.publications-grid {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  align-items: center;
  margin-top: var(--space-xl);
}

.publication-card {
  text-align: center;
  text-decoration: none;
  transition: transform var(--transition-base);
}

.publication-card:hover {
  transform: scale(1.02);
  text-decoration: none;
}

.publication-cover {
  max-width: 280px;
  margin: 0 auto;
}

.publication-cover img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.publication-title {
  margin-top: var(--space-sm);
  font-size: 0.9rem;
  color: var(--color-primary);
  font-weight: 600;
}

.publication-meta {
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
  margin-top: 4px;
}

/* ==========================================
   FEATURES GRID
   ========================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

/* ==========================================
   AUTHORS
   ========================================== */
.authors {
  margin: var(--space-lg) 0;
  font-size: 1rem;
  line-height: 1.7;
  text-align: center;
}

.authors a {
  color: var(--color-link);
  text-decoration: none;
}

.authors a:hover {
  text-decoration: underline;
}

.affiliations {
  margin: var(--space-md) 0 var(--space-lg);
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
  text-align: center;
}

.affiliations strong {
  color: var(--color-primary);
}

.sup {
  font-size: 65%;
  vertical-align: super;
  color: var(--color-text-tertiary);
}

/* ==========================================
   TOOLTIP
   ========================================== */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltiptext {
  visibility: hidden;
  width: 200px;
  background: var(--color-primary);
  color: white;
  text-align: center;
  border-radius: var(--radius-sm);
  padding: var(--space-sm);
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  margin-left: -100px;
  opacity: 0;
  transition: opacity var(--transition-fast);
  font-size: 0.8rem;
}

.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

/* ==========================================
   PROGRESS BAR
   ========================================== */
.progress {
  height: 6px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

/* ==========================================
   DIVIDER
   ========================================== */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-xl) 0;
}

.divider-vertical {
  width: 1px;
  background: var(--color-border);
  margin: 0 var(--space-lg);
}

/* ==========================================
   BREADCRUMBS
   ========================================== */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  margin-bottom: var(--space-lg);
}

.breadcrumb-item {
  color: var(--color-text-secondary);
}

.breadcrumb-item a {
  color: var(--color-text-secondary);
}

.breadcrumb-item a:hover {
  color: var(--color-accent);
}

.breadcrumb-separator {
  color: var(--color-text-muted);
}

.breadcrumb-item.active {
  color: var(--color-accent);
}

/* ==========================================
   GRID ITEM (Legacy Support)
   ========================================== */
.grid-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.grid-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.grid-item h3 {
  color: var(--color-primary);
  margin-top: 0;
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
}

.grid-item h3 i {
  color: var(--color-accent);
  margin-right: var(--space-sm);
}

.grid-item p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: 0.95rem;
}