/* SEO / AEO / GEO Pedia — layout & article UI */

.pedia-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  min-height: calc(100vh - 64px);
  max-width: 1400px;
  margin: 0 auto;
}

.pedia-sidebar {
  border-right: 1px solid var(--border);
  background: var(--surface);
  padding: 20px 0;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow-y: auto;
}

.pedia-search-wrap {
  padding: 0 16px 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.pedia-search {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
  padding: 10px 12px;
  border-radius: 4px;
  outline: none;
}
.pedia-search:focus { border-color: var(--accent3); }

.pedia-pillar {
  margin-bottom: 8px;
}

.pedia-pillar-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 10px 16px;
  cursor: pointer;
  transition: background 0.15s;
}
.pedia-pillar-btn:hover { background: var(--surface2); }
.pedia-pillar-btn.active { background: rgba(0,255,136,0.08); color: var(--accent); }

.pedia-pillar-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.pedia-topic-list {
  list-style: none;
  padding: 0 0 8px 0;
  display: none;
}
.pedia-pillar.open .pedia-topic-list { display: block; }

.pedia-topic-link {
  display: block;
  padding: 7px 16px 7px 34px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  line-height: 1.4;
}
.pedia-topic-link:hover { color: var(--text); text-decoration: none; background: var(--surface2); }
.pedia-topic-link.active {
  color: var(--accent3);
  border-left-color: var(--accent3);
  background: rgba(51,136,255,0.06);
}

.pedia-main {
  padding: 40px 48px 80px;
  min-width: 0;
}

.pedia-welcome {
  max-width: 720px;
}

.pedia-welcome h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
  line-height: 1.1;
}

.pedia-pillar-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.pedia-pillar-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
  text-align: left;
}
.pedia-pillar-card:hover {
  border-color: var(--accent3);
  transform: translateY(-2px);
  text-decoration: none;
}
.pedia-pillar-card h3 {
  font-family: var(--mono);
  font-size: 14px;
  margin-bottom: 8px;
}
.pedia-pillar-card p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

.pedia-article-header {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.pedia-breadcrumb {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
  margin-bottom: 12px;
}
.pedia-breadcrumb a { color: var(--accent3); }

.pedia-article-header h1 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.pedia-subtitle {
  font-size: 16px;
  color: var(--muted);
  margin-bottom: 14px;
}

.pedia-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pedia-tag {
  font-family: var(--mono);
  font-size: 10px;
  padding: 3px 10px;
  border-radius: 3px;
  border: 1px solid var(--border);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pedia-auditor {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  background: rgba(0,255,136,0.08);
  border: 1px solid rgba(0,255,136,0.2);
  padding: 8px 12px;
  border-radius: 4px;
}

.pedia-section {
  margin-bottom: 32px;
  max-width: 780px;
}

.pedia-section h2 {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent3);
  margin-bottom: 14px;
}

.pedia-section p,
.pedia-section li {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  margin-bottom: 12px;
}

.pedia-section ol {
  padding-left: 20px;
  margin-bottom: 12px;
}
.pedia-section ol li { margin-bottom: 10px; }

.pedia-example {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
}

.pedia-example-label {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 8px 14px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  color: var(--muted);
}
.pedia-example-label.good { color: var(--accent); }
.pedia-example-label.bad { color: var(--accent2); }

.pedia-example-body {
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.6;
}

.pedia-example pre {
  margin: 0;
  padding: 14px 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--accent);
  background: var(--bg);
}

.pedia-mistakes {
  list-style: none;
  padding: 0;
}
.pedia-mistakes li {
  padding: 10px 14px 10px 36px;
  position: relative;
  background: rgba(255,51,102,0.06);
  border: 1px solid rgba(255,51,102,0.15);
  border-radius: 4px;
  margin-bottom: 8px;
  font-size: 14px;
}
.pedia-mistakes li::before {
  content: '✕';
  position: absolute;
  left: 12px;
  color: var(--accent2);
  font-weight: 700;
}

.pedia-cta {
  margin-top: 40px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.pedia-cta p { margin: 0; color: var(--muted); font-size: 14px; max-width: 480px; }

.pedia-empty {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
  padding: 40px 0;
}

@media (max-width: 900px) {
  .pedia-layout { grid-template-columns: 1fr; }
  .pedia-sidebar {
    position: static;
    height: auto;
    max-height: 40vh;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .pedia-main { padding: 24px 20px 60px; }
}