/* ==========================================================================
   LLMs Collection Styles
   ========================================================================== */

/* --- Mermaid Diagrams --- */

.mermaid {
  width: calc(100vw - 2rem);
  max-width: 1100px;
  margin-left: 50%;
  transform: translateX(-50%);
  overflow-x: auto;
  padding: 1.5rem 1rem;
  background: #1a1a2e;
  border-radius: 8px;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}

.mermaid svg {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
}

@media (max-width: 600px) {
  .mermaid {
    width: calc(100vw - 1rem);
    padding: 1rem 0.5rem;
    border-radius: 4px;
    -webkit-overflow-scrolling: touch;
  }
}

/* --- Landing Page --- */

.llms-landing {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1rem;
}

.llms-landing-header {
  margin-bottom: 2rem;
}

.llms-landing-header h1 {
  margin-bottom: 0.5rem;
}

.llms-intro {
  color: var(--text-light);
  font-size: 1.1rem;
  line-height: 1.6;
  max-width: 600px;
}

.clear-progress-btn {
  margin-top: 0.75rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  font-family: inherit;
  color: var(--text-light);
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.clear-progress-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.llms-map {
  margin-bottom: 3rem;
}

.llms-tier {
  margin-bottom: 2.5rem;
}

.llms-tier h2 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.llms-node-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.llms-node-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color 0.15s;
  cursor: pointer;
}

.llms-node-card:hover {
  border-color: var(--accent);
}

.node-card-link {
  display: block;
  padding: 0.75rem 1rem;
  text-decoration: none;
  color: var(--text);
}

.node-card-link:hover {
  text-decoration: none;
}

.node-read-badge {
  display: none;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--text-light);
  background: var(--border);
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  float: right;
  margin-left: 0.5rem;
}

.llms-node-card.is-read {
  opacity: 0.55;
}

.llms-node-card.is-read:hover {
  opacity: 0.85;
}

.llms-node-card.is-read .node-read-badge {
  display: inline-block;
}

.llms-node-card .node-title {
  font-weight: 500;
}

.llms-node-card .node-summary {
  margin: 0.35rem 0 0;
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.5;
}

/* --- Node Page --- */

.llms-node {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1rem;
}

.llms-breadcrumb {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 1rem;
}

.llms-breadcrumb a {
  color: var(--accent);
  text-decoration: none;
}

.llms-breadcrumb a:hover {
  text-decoration: underline;
}

.llms-breadcrumb .sep {
  margin: 0 0.35rem;
  color: var(--border);
}

.llms-breadcrumb .current {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-weight: 600;
}

.llms-node-header h1 {
  margin-top: 0;
  margin-bottom: 2rem;
}

/* --- Tree Navigation --- */

.llms-tree-nav {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.llms-nav-section {
  margin-bottom: 1.25rem;
}

.nav-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 0.4rem;
}

.llms-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.llms-nav-list li {
  padding: 0.3rem 0;
}

.nav-read-badge {
  display: none;
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--text-light);
  background: var(--border);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  vertical-align: middle;
  margin-right: 0.25rem;
}

.llms-nav-item.is-read .nav-read-badge {
  display: inline-block;
}

.llms-nav-item.is-read a {
  opacity: 0.55;
}

.llms-nav-section a {
  color: var(--accent);
  text-decoration: none;
}

.llms-nav-section a:hover {
  text-decoration: underline;
}

.llms-nav-map {
  margin-top: 1.5rem;
}

.llms-nav-map a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.9rem;
}

.llms-nav-map a:hover {
  color: var(--accent);
}

/* --- Glossary Terms --- */

.glossary-term {
  border-bottom: 1px dotted var(--accent);
  cursor: help;
}

/* --- Responsive --- */

@media (max-width: 600px) {
  .llms-node-card a {
    flex-direction: column;
    gap: 0.25rem;
  }
}