/* ─────────────────────────────────────────────
   Научная библиотека Академии стеклопластика
   library.css — общие стили раздела
   ───────────────────────────────────────────── */

/* ── BREADCRUMB ── */
.lib-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 28px;
}
.lib-breadcrumb a { color: var(--muted); text-decoration: none; transition: color .15s; }
.lib-breadcrumb a:hover { color: var(--accent-dark); }
.lib-breadcrumb__sep { opacity: 0.4; }
.lib-breadcrumb__current { color: var(--navy); }

/* ── LIBRARY BADGE ── */
.lib-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 14px;
}
.lib-badge::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 1.5px;
  background: var(--accent);
}

/* ── SECTION CARDS on /library/ ── */
.lib-sections {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
}
@media (max-width: 860px) { .lib-sections { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .lib-sections { grid-template-columns: 1fr; } }

.lib-section-card {
  border: 0.5px solid var(--gray-mid);
  border-top: 3px solid var(--navy);
  background: var(--paper);
  padding: 28px 24px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-top-color .18s, box-shadow .18s;
}
.lib-section-card:hover {
  border-top-color: var(--accent);
  box-shadow: 0 4px 16px rgba(28,39,51,.08);
}
.lib-section-card--inactive {
  opacity: 0.6;
  pointer-events: none;
  border-top-color: var(--gray-mid);
}
.lib-section-card__num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  color: var(--accent-dark);
  font-weight: 600;
}
.lib-section-card__title {
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.25;
}
.lib-section-card__desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}
.lib-section-card__count {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  color: var(--muted);
  border-top: 0.5px solid var(--gray-mid);
  padding-top: 10px;
  margin-top: 4px;
}
.lib-section-card__wip {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

/* ── ARTICLE CARDS ── */
.lib-article-card {
  border: 0.5px solid var(--gray-mid);
  background: var(--white);
  padding: 24px 22px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: box-shadow .18s;
}
.lib-article-card:hover { box-shadow: 0 4px 16px rgba(28,39,51,.08); }
.lib-article-card__tag {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-dark);
}
.lib-article-card__title {
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.3;
}
.lib-article-card__desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}
.lib-article-card__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  color: var(--muted);
  padding-top: 10px;
  border-top: 0.5px solid var(--gray-mid);
  flex-wrap: wrap;
}
.lib-article-card__read {
  margin-left: auto;
  color: var(--accent-dark);
  font-weight: 600;
  white-space: nowrap;
}

/* ── ARTICLE LAYOUT ── */
.lib-article-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 52px;
  align-items: start;
}
@media (max-width: 860px) { .lib-article-layout { grid-template-columns: 1fr; } }

.lib-article-sidebar { position: sticky; top: 90px; display: flex; flex-direction: column; gap: 20px; }

/* ── TOC ── */
.lib-toc {
  background: var(--paper);
  border: 0.5px solid var(--gray-mid);
  border-left: 3px solid var(--accent);
  padding: 20px 22px;
}
.lib-toc__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.lib-toc ol { list-style: none; padding: 0; margin: 0; counter-reset: toc; display: flex; flex-direction: column; gap: 8px; }
.lib-toc li { counter-increment: toc; display: flex; gap: 8px; align-items: baseline; }
.lib-toc li::before { content: counter(toc) "."; font-family: 'IBM Plex Mono', monospace; font-size: 0.68rem; color: var(--accent-dark); flex-shrink: 0; min-width: 18px; }
.lib-toc a { font-size: 0.85rem; color: var(--navy); text-decoration: none; line-height: 1.4; transition: color .15s; }
.lib-toc a:hover { color: var(--accent-dark); }

/* Mobile TOC (collapsible) */
.lib-toc-mobile {
  background: var(--paper);
  border: 0.5px solid var(--gray-mid);
  border-left: 3px solid var(--accent);
  margin-bottom: 36px;
  display: none;
}
@media (max-width: 860px) { .lib-toc-mobile { display: block; } }
.lib-toc-mobile summary {
  padding: 14px 18px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.lib-toc-mobile summary::after { content: "▾"; opacity: 0.5; }
details[open] .lib-toc-mobile summary::after { content: "▴"; }
.lib-toc-mobile ol { list-style: none; padding: 0 18px 16px; margin: 0; counter-reset: toc; display: flex; flex-direction: column; gap: 8px; }
.lib-toc-mobile li { counter-increment: toc; display: flex; gap: 8px; align-items: baseline; }
.lib-toc-mobile li::before { content: counter(toc) "."; font-family: 'IBM Plex Mono', monospace; font-size: 0.68rem; color: var(--accent-dark); flex-shrink: 0; min-width: 18px; }
.lib-toc-mobile a { font-size: 0.85rem; color: var(--navy); text-decoration: none; }

/* ── ARTICLE BODY TYPOGRAPHY ── */
.lib-body h2 {
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-size: clamp(1.2rem, 2.5vw, 1.55rem);
  font-weight: 600;
  color: var(--navy);
  margin: 48px 0 16px;
  padding-top: 12px;
  border-top: 0.5px solid var(--gray-mid);
  line-height: 1.2;
}
.lib-body h3 {
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  margin: 32px 0 12px;
}
.lib-body p { font-size: 1rem; line-height: 1.8; color: var(--text); margin-bottom: 1.1em; }
.lib-body ul, .lib-body ol { padding-left: 22px; margin-bottom: 1.1em; }
.lib-body li { font-size: 1rem; line-height: 1.7; color: var(--text); margin-bottom: 4px; }
.lib-body a { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px; }
.lib-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 28px 0;
  overflow-x: auto;
  display: block;
}
.lib-body th {
  background: var(--navy);
  color: var(--white);
  text-align: left;
  padding: 10px 14px;
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-weight: 600;
  white-space: nowrap;
}
.lib-body td {
  border: 0.5px solid var(--gray-mid);
  padding: 9px 14px;
  vertical-align: top;
  line-height: 1.55;
}
.lib-body tr:nth-child(even) td { background: var(--paper); }

/* ── CONTENT COMPONENTS ── */
.science-summary {
  background: var(--navy);
  color: var(--white);
  padding: 24px 28px;
  margin: 32px 0;
  border-left: 4px solid var(--accent);
}
.science-summary__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.science-summary p { color: rgba(255,255,255,0.88); font-size: 0.97rem; line-height: 1.75; margin-bottom: 0; }

.academy-expert {
  background: var(--paper);
  border: 0.5px solid var(--gray-mid);
  border-left: 4px solid var(--navy);
  padding: 22px 26px;
  margin: 28px 0;
  display: flex;
  gap: 16px;
}
.academy-expert__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
  overflow: hidden;
  border: 1.5px solid var(--gray-mid);
}
.academy-expert__avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.academy-expert__body {}
.academy-expert__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.academy-expert__name {
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
}
.academy-expert p { font-size: 0.92rem; color: var(--muted); line-height: 1.7; margin: 0; }

.practice-note {
  background: #f0f8ef;
  border: 0.5px solid #c8e6c5;
  border-left: 4px solid var(--accent);
  padding: 18px 22px;
  margin: 24px 0;
}
.practice-note__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 8px;
}
.practice-note p { font-size: 0.93rem; color: var(--navy); line-height: 1.7; margin: 0; }

.warning-block {
  background: #fff8ee;
  border: 0.5px solid #f5ddb0;
  border-left: 4px solid #c97c00;
  padding: 18px 22px;
  margin: 24px 0;
}
.warning-block__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #9a5e00;
  margin-bottom: 8px;
}
.warning-block p { font-size: 0.93rem; color: #5a3800; line-height: 1.7; margin: 0; }

.definition {
  background: var(--paper);
  border: 0.5px solid var(--gray-mid);
  padding: 16px 20px;
  margin: 20px 0;
}
.definition__term {
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
  font-size: 0.95rem;
}
.definition p { font-size: 0.88rem; color: var(--muted); line-height: 1.65; margin: 0; }

.lib-disclaimer {
  background: var(--paper);
  border: 0.5px solid var(--gray-mid);
  padding: 14px 18px;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 32px;
}
.lib-disclaimer::before {
  content: 'i';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border: 1px solid var(--muted);
  border-radius: 50%;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  font-weight: 600;
  margin-right: 8px;
  flex-shrink: 0;
  float: left;
  margin-top: 2px;
}

/* ── SOURCES ── */
.lib-sources {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 0.5px solid var(--gray-mid);
}
.lib-sources__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 18px;
}
.lib-sources ol { list-style: none; padding: 0; counter-reset: sources; display: flex; flex-direction: column; gap: 12px; }
.lib-sources li { counter-increment: sources; display: flex; gap: 12px; font-size: 0.85rem; color: var(--muted); line-height: 1.6; }
.lib-sources li::before { content: "[" counter(sources) "]"; font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; color: var(--accent-dark); flex-shrink: 0; min-width: 28px; margin-top: 1px; }
.lib-sources a { color: var(--accent-dark); word-break: break-all; }

/* ── CTA BLOCKS ── */
.lib-cta {
  background: var(--navy);
  padding: 32px 36px;
  margin: 48px 0 32px;
}
.lib-cta__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.lib-cta h3 {
  font-family: 'IBM Plex Sans Condensed', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
  line-height: 1.25;
}
.lib-cta p { font-size: 0.9rem; color: rgba(255,255,255,0.65); line-height: 1.7; margin-bottom: 22px; }
.lib-cta a.btn {
  background: var(--white);
  color: var(--navy);
  display: inline-block;
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 12px 26px;
  transition: background .18s, color .18s;
}
.lib-cta a.btn:hover { background: var(--accent); color: #0f1a12; }

/* ── SIDEBAR WIDGETS ── */
.lib-sidebar-widget {
  background: var(--paper);
  border: 0.5px solid var(--gray-mid);
  padding: 20px;
}
.lib-sidebar-widget__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.lib-sidebar-expert { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 12px; }
.lib-sidebar-expert__avatar { width: 42px; height: 42px; border-radius: 50%; overflow: hidden; flex-shrink: 0; border: 1px solid var(--gray-mid); }
.lib-sidebar-expert__avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lib-sidebar-expert__name { font-family: 'IBM Plex Sans Condensed', sans-serif; font-weight: 600; font-size: 0.95rem; color: var(--navy); margin-bottom: 4px; }
.lib-sidebar-expert__bio { font-size: 0.78rem; color: var(--muted); line-height: 1.5; }
.lib-sidebar-widget a { font-size: 0.78rem; color: var(--accent-dark); text-decoration: none; font-weight: 500; }
.lib-sidebar-widget a:hover { text-decoration: underline; }

/* ── RELATED ARTICLES ── */
.lib-related { margin-top: 48px; }
.lib-related__label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}
.lib-related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 680px) { .lib-related-grid { grid-template-columns: 1fr; } }

/* ── ARTICLE META HEADER ── */
.lib-article-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-top: 0.5px solid var(--gray-mid);
  border-bottom: 0.5px solid var(--gray-mid);
  margin: 20px 0 32px;
  flex-wrap: wrap;
}
.lib-article-meta__item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem;
  color: var(--muted);
}
.lib-article-meta__sep { width: 1px; height: 12px; background: var(--gray-mid); }
.lib-article-meta__author { display: flex; align-items: center; gap: 8px; text-decoration: none; color: inherit; }
.lib-article-meta__avatar { width: 24px; height: 24px; border-radius: 50%; overflow: hidden; border: 1px solid var(--gray-mid); }
.lib-article-meta__avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }