/* Journal feed page + article page additions (PT-21).
   Owners: journal page package (PT-21). The long-form article column, TOC rail and
   cover frame reuse /static/css/pages/article.css; prose/code/table styles live in
   public.css. This file only adds the journal-specific list composition and the
   article metadata/permanent-link additions, using the shared tokens. */

/* ------------------------------------------------------------------ journal feed */

.journal-page {
  padding-top: var(--space-8);
  padding-bottom: var(--section-y);
}

.journal-page__header {
  max-width: 820px;
}

.journal-page__count {
  margin: var(--space-6) 0 var(--space-4);
  font-size: var(--text-meta);
  color: var(--color-ink-2);
}

/* GET filters: one bordered bar; works without JavaScript (plain form submit). */
.journal-filters {
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) minmax(160px, 1fr) minmax(160px, 1fr) auto auto;
  gap: 16px;
  align-items: end;
  margin-top: var(--space-6);
  padding: 20px;
  background: var(--color-bg);
  border: var(--border);
  border-radius: var(--radius-panel);
}

.journal-filters__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.journal-filters__label {
  font-size: var(--text-caption);
  font-weight: var(--weight-medium);
  color: var(--color-ink-2);
}

.journal-filters__input,
.journal-filters__select {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--color-control-border);
  border-radius: var(--radius-tile);
  background: var(--color-bg);
  color: var(--color-ink);
  font: inherit;
  font-size: var(--text-body-s);
}

.journal-filters__input::placeholder {
  color: var(--color-ink-3);
}

.journal-filters__check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  font-size: var(--text-body-s);
  color: var(--color-ink-2);
  cursor: pointer;
}

.journal-filters__check input {
  width: 18px;
  height: 18px;
  accent-color: var(--color-ink);
}

.journal-filters__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  min-height: 44px;
}

.journal-filters__reset {
  font-size: var(--text-meta);
  font-weight: var(--weight-medium);
  color: var(--color-ink-2);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.journal-filters__reset:hover {
  color: var(--color-ink);
}

/* Pinned article: the only large composition in the feed (page one only). */
.journal-featured {
  margin-bottom: var(--space-8);
}

.journal-featured__link {
  display: grid;
  grid-template-columns: minmax(0, 58fr) minmax(0, 42fr);
  gap: 0;
  overflow: hidden;
  background: var(--color-bg);
  border: var(--border);
  border-radius: var(--radius-panel);
  text-decoration: none;
}

.journal-featured__link--text {
  grid-template-columns: minmax(0, 1fr);
}

.journal-featured__link:hover .journal-featured__title {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.journal-featured__media {
  aspect-ratio: 16 / 10;
  min-height: 100%;
}

.journal-featured__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.journal-featured__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  min-width: 0;
  padding: 32px;
}

.journal-featured__link--text .journal-featured__body {
  padding: 40px 32px;
}

.journal-featured__meta {
  font-size: var(--text-meta);
  font-weight: var(--weight-medium);
  color: var(--color-ink-2);
}

.journal-featured__title {
  margin: 0;
  font-size: var(--text-h2);
  font-weight: var(--weight-semibold);
  line-height: var(--lh-title);
  letter-spacing: var(--ls-title);
  overflow-wrap: anywhere;
}

.journal-featured__summary {
  font-size: var(--text-body);
  line-height: 1.55;
  color: var(--color-ink-2);
}

.journal-featured__authors {
  font-size: var(--text-meta);
  color: var(--color-ink-3);
}

.journal-featured__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  font-size: var(--text-body-s);
  font-weight: var(--weight-medium);
  color: var(--color-ink);
}

.journal-featured__cta span:last-child {
  color: var(--color-accent-ink);
}

/* Regular feed grid. */
.journal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px 32px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.journal-grid__item {
  min-width: 0;
}

.journal-card__archive {
  margin: 0 0 8px;
}

.journal-card .article-card__title {
  overflow-wrap: anywhere;
}

/* ------------------------------------------------------------------ article additions */

.article-header__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: var(--text-meta);
  color: var(--color-ink-2);
}

.article-header__type {
  font-weight: var(--weight-medium);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.article-header__sep {
  color: var(--color-ink-3);
}

.article-header__direction {
  color: var(--color-accent-ink);
  text-decoration: none;
  font-weight: var(--weight-medium);
}

.article-header__direction:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-header__authors {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  margin-top: var(--space-6);
  font-size: var(--text-body-s);
}

.article-header__authors-label {
  color: var(--color-ink-3);
  font-size: var(--text-caption);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.article-header__author {
  color: var(--color-ink);
  font-weight: var(--weight-medium);
  text-decoration: none;
}

.article-header__author:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-header__dates {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: var(--space-4);
  font-size: var(--text-meta);
  color: var(--color-ink-2);
}

.article-header__note {
  margin: var(--space-3) 0 0;
  font-size: var(--text-meta);
  color: var(--color-ink-2);
}

.article-header__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: var(--space-4);
}

.article-header__hint {
  margin: 8px 0 0;
  font-size: var(--text-caption);
  color: var(--color-ink-3);
}

.article-copy {
  min-height: 44px;
}

/* Optional cover: rendered only when the reader has a ready image (no empty frame). */
.article-cover {
  margin: 0 0 var(--space-8);
}

.article-cover__caption {
  margin-top: 8px;
  font-size: var(--text-caption);
  line-height: 1.4;
  color: var(--color-ink-2);
}

/* Permanent section links: the anchor is always usable; the copy button is an
   enhancement revealed by the shared [data-copy] helper in /assets/public.js. */
.toc__item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 4px;
}

.toc__item .toc__link {
  flex: 1 1 auto;
  min-width: 0;
}

.article-toc__copy {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--color-ink-3);
  cursor: pointer;
}

.article-toc__copy:hover {
  color: var(--color-ink);
  background: var(--color-surface);
}

html:not(.js) .article-copy,
html:not(.js) .article-toc__copy {
  display: none;
}

@media (hover: hover) and (pointer: fine) {
  .article-toc__copy {
    opacity: 0;
    transition: opacity var(--motion-fast) ease;
  }

  .toc__item:hover .article-toc__copy,
  .toc__item:focus-within .article-toc__copy {
    opacity: 1;
  }
}

/* Formula fallback: the server renders ```math``` fenced blocks as sanitized
   <pre><code class="language-math"> text; label it as a readable text formula. */
.prose--article pre:has(> code.language-math) {
  position: relative;
  padding-top: 34px;
}

.prose--article pre:has(> code.language-math)::before {
  content: "Формула — текстовая запись";
  position: absolute;
  top: 10px;
  left: 20px;
  right: 20px;
  font-family: var(--font-sans);
  font-size: var(--text-caption);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-code-punct);
}

/* Markdown image captions arrive as an italic-only paragraph after the image. */
.prose--article > p > em:only-child {
  font-size: var(--text-caption);
  line-height: 1.4;
  color: var(--color-ink-2);
}

/* Related blocks and article navigation. */
.article-related .section-header__title {
  margin-bottom: var(--space-4);
}

.article-related .related-list,
.article-related .bibliography-list {
  margin-top: var(--space-4);
}

.article-next {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: var(--section-y);
}

.article-next__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 24px;
  grid-template-areas:
    "label arrow"
    "title arrow";
  align-items: center;
  column-gap: 16px;
  min-height: 44px;
  padding: 20px;
  border: var(--border);
  border-radius: var(--radius-tile);
  text-decoration: none;
}

.article-next__link:hover {
  border-color: var(--color-ink-2);
}

.article-next__link:hover .article-next__title {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-next__label {
  grid-area: label;
  font-size: var(--text-caption);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-2);
}

.article-next__title {
  grid-area: title;
  margin-top: 4px;
  font-size: var(--text-h3);
  font-weight: var(--weight-semibold);
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.article-next__arrow {
  grid-area: arrow;
  color: var(--color-ink-2);
}

.article-next__link--prev .article-next__arrow {
  color: var(--color-ink-3);
}

.article-back-bottom {
  margin-top: var(--space-8);
}

/* ------------------------------------------------------------------ responsive */

@media (max-width: 1199px) {
  .journal-filters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .journal-filters__actions {
    grid-column: 1 / -1;
  }

  .journal-featured__link {
    grid-template-columns: minmax(0, 1fr);
  }

  .journal-featured__media {
    aspect-ratio: 16 / 9;
    min-height: 0;
  }

  .journal-featured__body {
    padding: 24px;
  }

  .journal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .journal-page {
    padding-top: var(--space-5);
  }

  .journal-filters {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    padding: 16px;
  }

  .journal-filters__actions .button {
    flex: 1 1 auto;
  }

  .journal-featured {
    margin-bottom: var(--space-6);
  }

  .journal-featured__link--text .journal-featured__body {
    padding: 24px;
  }

  .journal-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-6);
  }

  .article-header__meta {
    gap: 6px;
  }

  .article-next__link {
    padding: 16px;
  }
}

@media (max-width: 420px) {
  .journal-page {
    padding-top: var(--space-4);
  }

  .journal-filters {
    padding: 14px;
  }

  .journal-filter__label {
    font-size: var(--text-caption);
  }

  .journal-featured__body,
  .journal-featured__link--text .journal-featured__body {
    padding: 20px;
  }

  .article-header__title {
    overflow-wrap: anywhere;
  }
}