/* /materials — библиотека PDF и документов */

.material-hero.project-hero { padding-bottom: clamp(32px, 5vw, 56px); }

.material-filters {
  position: sticky;
  top: calc(var(--topbar-h) + var(--header-h));
  z-index: 20;
  padding: 16px 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.material-filters .container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.material-search input {
  width: 100%;
  max-width: 520px;
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--surface);
  color: var(--text);
  font-size: 15px;
}

.material-filters__row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-start;
}

.material-filters__label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  min-width: 48px;
  padding-top: 8px;
}

.material-filters__group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1;
}

.material-filter {
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
}

.material-filter:hover,
.material-filter--active {
  border-color: rgba(255, 107, 44, 0.45);
  color: var(--text);
  background: rgba(255, 107, 44, 0.08);
}

.material-filters__count {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.material-grid--related {
  grid-template-columns: repeat(3, 1fr);
}

.material-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}

.material-card:hover {
  border-color: rgba(255, 107, 44, 0.35);
  transform: translateY(-2px);
}

.material-card[hidden] { display: none; }

.material-card__media {
  position: relative;
  display: block;
}

.material-card__media img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  display: block;
}

.material-card__format {
  position: absolute;
  left: 8px;
  top: 8px;
  padding: 4px 8px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.75);
  font-family: var(--font-mono);
  font-size: 11px;
  color: #fff;
}

.material-card__body { padding: 14px 16px 16px; }

.material-card__cat {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.material-card__title {
  margin: 6px 0 6px;
  font-size: 17px;
  line-height: 1.3;
}

.material-card__title a { color: inherit; text-decoration: none; }

.material-card__meta {
  margin: 0 0 8px;
  font-size: 12px;
  color: var(--muted);
}

.material-card__excerpt {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.45;
}

.material-detail__layout {
  display: grid;
  grid-template-columns: 1fr minmax(260px, 320px);
  gap: 28px;
  align-items: start;
}

.material-preview {
  margin-bottom: 16px;
}

.material-preview__cover {
  width: 100%;
  max-height: 280px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 12px;
}

.material-preview__pdf {
  width: 100%;
  height: 420px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 16px;
  background: var(--bg-2);
}

.material-download { margin-top: 8px; }

.material-detail__meta {
  margin: 0 0 16px;
  font-size: 14px;
  color: var(--muted);
}

.material-howto { margin: 24px 0; }

.material-howto__list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.6;
}

.material-tags__title {
  font-size: 14px;
  margin: 16px 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.material-tags__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.material-tag {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
  color: var(--accent-2);
  text-decoration: none;
}

.material-sidebar {
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.02);
}

.material-sidebar__title { margin: 0 0 14px; font-size: 17px; }

.material-related { margin-bottom: 18px; }

.material-related h3 {
  margin: 0 0 8px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.material-related ul {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.5;
}

.material-related a { color: var(--accent-2); }

.material-sidebar__empty {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.material-faq__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 800px;
}

.material-faq__item {
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.02);
}

.material-faq__item summary { cursor: pointer; font-weight: 600; }

.material-faq__item p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.material-integrations {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.material-integrations article {
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.material-integrations h3 { margin: 0 0 8px; font-size: 16px; }

.material-integrations p {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.45;
}

@media (max-width: 1024px) {
  .material-grid,
  .material-grid--related { grid-template-columns: repeat(2, 1fr); }
  .material-detail__layout { grid-template-columns: 1fr; }
  .material-integrations { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .material-grid,
  .material-grid--related { grid-template-columns: 1fr; }
  .material-filters { position: static; }
  .material-integrations { grid-template-columns: 1fr; }
  .material-preview__pdf { height: 280px; }
}