/* =============================================================
   SAMEKORO LAB — 記事一覧・記事詳細
   ============================================================= */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.page-hero {
  position: relative;
  z-index: 1;
  padding: 154px 0 54px;
}

.page-hero__title {
  margin-top: 10px;
  font-size: clamp(2.05rem, 5vw, 3.7rem);
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.page-hero__title .en {
  color: var(--text-faint);
  font-family: var(--font-en);
  font-size: 0.34em;
  letter-spacing: 0.12em;
  vertical-align: middle;
}

.page-hero__lead {
  max-width: 790px;
  margin-top: 22px;
  color: var(--text-sub);
}

.page-hero__lead a {
  color: var(--cyan-bright);
  text-underline-offset: 0.2em;
}

.article-list-section {
  padding-top: 18px;
}

.article-category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.article-category-tab {
  min-height: 44px;
  padding: 8px 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-sub);
  background: rgba(7, 20, 36, 0.66);
  font: 700 0.88rem var(--font-ja);
  cursor: pointer;
  transition: border-color var(--ease), color var(--ease), background var(--ease), transform var(--ease);
}

.article-category-tab:hover,
.article-category-tab:focus-visible {
  border-color: var(--line-bright);
  color: var(--text);
  transform: translateY(-1px);
}

.article-category-tab.is-active {
  border-color: rgba(84, 216, 232, 0.6);
  color: var(--cyan-bright);
  background: rgba(84, 216, 232, 0.1);
  box-shadow: 0 0 22px rgba(84, 216, 232, 0.1);
}

.article-filters {
  display: grid;
  grid-template-columns: minmax(250px, 1fr) minmax(180px, 260px) auto;
  gap: 14px;
  align-items: center;
  margin-bottom: 28px;
  padding: 18px;
}

.article-search {
  position: relative;
  display: block;
}

.article-search svg {
  position: absolute;
  top: 50%;
  left: 15px;
  width: 18px;
  height: 18px;
  transform: translateY(-50%);
  fill: none;
  stroke: var(--text-faint);
  stroke-width: 1.6;
  pointer-events: none;
}

.article-search input,
.article-tag-filter select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  background: rgba(3, 12, 24, 0.72);
  font: inherit;
  outline: none;
}

.article-search input {
  padding: 9px 14px 9px 44px;
}

.article-tag-filter select {
  padding: 9px 38px 9px 13px;
}

.article-search input:focus,
.article-tag-filter select:focus {
  border-color: var(--line-bright);
  box-shadow: 0 0 0 3px rgba(84, 216, 232, 0.08);
}

.article-filter-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  color: var(--text-sub);
  white-space: nowrap;
}

.article-filter-meta button {
  min-height: 40px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--cyan);
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.article-list-grid,
#homeArticleGrid {
  align-items: stretch;
}

.article-list-grid .article-card,
#homeArticleGrid .article-card {
  display: flex;
  min-height: 100%;
  overflow: hidden;
}

.article-card__accent {
  width: 5px;
  flex: 0 0 5px;
  background: linear-gradient(180deg, var(--cyan), var(--blue));
}

.article-card__accent--troubleshooting {
  background: linear-gradient(180deg, #ffbc66, #ef7f66);
}

.article-card__body {
  display: flex;
  width: 100%;
  flex-direction: column;
  padding: 25px;
}

.article-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
}

.article-card__date {
  margin-left: auto;
  color: var(--text-faint);
  font: 500 0.76rem var(--font-en);
}

.article-category {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 28px;
  padding: 3px 10px;
  border: 1px solid rgba(84, 216, 232, 0.32);
  border-radius: 999px;
  color: var(--cyan-bright);
  background: rgba(84, 216, 232, 0.08);
  font-size: 0.75rem;
  font-weight: 700;
}

.article-category--troubleshooting {
  border-color: rgba(255, 188, 102, 0.34);
  color: #ffd6a1;
  background: rgba(255, 157, 92, 0.09);
}

.article-card__series {
  margin: -3px 0 10px;
  color: var(--text-faint);
  font: 500 0.74rem var(--font-ja);
  letter-spacing: 0.03em;
}

.article-card__series span {
  color: var(--cyan);
  font-family: var(--font-en);
}

.article-card__title {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 1.08rem;
  line-height: 1.55;
}

.article-card__desc {
  margin: 0 0 18px;
  color: var(--text-sub);
  font-size: 0.92rem;
  line-height: 1.75;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: auto 0 0;
  padding: 0;
  list-style: none;
}

.article-tags li {
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-faint);
  background: rgba(3, 12, 24, 0.45);
  font-size: 0.73rem;
}

.article-card .card__link:focus-visible {
  outline: 2px solid var(--cyan-bright);
  outline-offset: -4px;
  border-radius: var(--radius-card);
}

.article-empty {
  grid-column: 1 / -1;
  padding: 44px 24px;
  text-align: center;
}

.article-empty strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
  font-size: 1.05rem;
}

.article-empty span {
  color: var(--text-sub);
  font-size: 0.9rem;
}

/* 記事詳細 */
.article-detail-page {
  position: relative;
  z-index: 1;
  padding: 126px 0 100px;
}

.article-detail {
  max-width: 920px;
}

.article-breadcrumbs {
  display: flex;
  gap: 9px;
  align-items: center;
  margin-bottom: 34px;
  color: var(--text-faint);
  font-size: 0.8rem;
  overflow: hidden;
}

.article-breadcrumbs a {
  color: var(--text-sub);
  text-decoration: none;
  flex: 0 0 auto;
}

.article-breadcrumbs span:last-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-detail__header {
  margin-bottom: 38px;
}

.article-detail__header .article-category {
  margin: 16px 0 14px;
}

.article-detail__series {
  margin: -5px 0 13px;
  color: var(--text-faint);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.article-detail__series span {
  color: var(--cyan);
  font-family: var(--font-en);
}

.article-detail__title {
  max-width: 850px;
  font-size: clamp(2rem, 5vw, 3.35rem);
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.article-detail__summary {
  max-width: 760px;
  margin-top: 20px;
  color: var(--text-sub);
  font-size: 1.02rem;
}

.article-detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 24px 0 14px;
}

.article-detail__meta div {
  display: flex;
  gap: 9px;
}

.article-detail__meta dt {
  color: var(--text-faint);
  font-size: 0.78rem;
}

.article-detail__meta dd {
  color: var(--text-sub);
  font: 500 0.8rem var(--font-en);
}

.article-note-link {
  margin-top: 18px;
}

.article-note-link a {
  color: var(--cyan-bright);
}

.article-detail__thumbnail {
  margin: 0 0 32px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.article-detail__thumbnail img,
.article-body img {
  display: block;
  max-width: 100%;
  height: auto;
}

.article-body {
  padding: clamp(24px, 5vw, 58px);
  background: rgba(8, 24, 43, 0.78);
}

.article-body > :first-child {
  margin-top: 0;
}

.article-body > :last-child {
  margin-bottom: 0;
}

.article-body h2 {
  margin: 2.3em 0 0.8em;
  padding-bottom: 0.45em;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  line-height: 1.45;
}

.article-body h3 {
  margin: 2em 0 0.65em;
  color: var(--cyan-bright);
  font-size: 1.23rem;
  line-height: 1.5;
}

.article-body h4 {
  margin: 1.7em 0 0.6em;
  color: var(--text);
  font-size: 1.05rem;
}

.article-body p,
.article-body ul,
.article-body ol,
.article-body blockquote,
.article-body pre,
.article-body figure {
  margin: 1.1em 0;
}

.article-body ul,
.article-body ol {
  padding-left: 1.5em;
}

.article-body li + li {
  margin-top: 0.4em;
}

.article-body a {
  color: var(--cyan-bright);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  overflow-wrap: anywhere;
}

.article-body code {
  padding: 0.1em 0.35em;
  border: 1px solid rgba(126, 214, 240, 0.16);
  border-radius: 5px;
  color: #a9f4fc;
  background: rgba(2, 10, 20, 0.75);
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 0.88em;
}

.article-body pre {
  overflow-x: auto;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #020812;
  line-height: 1.65;
  -webkit-overflow-scrolling: touch;
}

.article-body pre code {
  padding: 0;
  border: 0;
  color: #c9e8f2;
  background: transparent;
  font-size: 0.84rem;
}

.article-body blockquote {
  padding: 14px 18px;
  border-left: 3px solid var(--cyan);
  color: var(--text-sub);
  background: rgba(84, 216, 232, 0.06);
}

.article-body blockquote p {
  margin: 0;
}

.article-body hr {
  margin: 2.4em 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.article-body figure img {
  margin: 0 auto;
  border-radius: 12px;
}

.task-box {
  color: var(--cyan);
  font-family: var(--font-en);
}

.article-pagination {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 14px;
  align-items: stretch;
  margin-top: 28px;
}

.article-pagination__item,
.article-pagination__all {
  display: flex;
  min-height: 74px;
  padding: 14px 17px;
  border: 1px solid var(--line);
  border-radius: 14px;
  text-decoration: none;
  background: rgba(8, 24, 43, 0.62);
  transition: border-color var(--ease), transform var(--ease);
}

.article-pagination__item {
  flex-direction: column;
}

.article-pagination__item:hover,
.article-pagination__all:hover {
  border-color: var(--line-bright);
  transform: translateY(-2px);
}

.article-pagination__item span {
  color: var(--text-faint);
  font-size: 0.72rem;
}

.article-pagination__item strong {
  margin-top: 4px;
  color: var(--text-sub);
  font-size: 0.84rem;
  line-height: 1.5;
}

.article-pagination__item--next {
  text-align: right;
}

.article-pagination__all {
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  font-size: 0.82rem;
  white-space: nowrap;
}

.home-experiment-link {
  margin-top: 20px;
  color: var(--text-faint);
  text-align: right;
  font-size: 0.86rem;
}

.home-experiment-link a {
  color: var(--cyan);
  text-underline-offset: 0.2em;
}

@media (max-width: 992px) {
  .article-filters {
    grid-template-columns: 1fr 220px;
  }

  .article-filter-meta {
    grid-column: 1 / -1;
  }

  #homeArticleGrid .article-card:nth-child(3) {
    display: flex;
  }
}

@media (max-width: 768px) {
  .page-hero {
    padding: 124px 0 38px;
  }

  .page-hero__title .en {
    display: block;
    margin-top: 8px;
    font-size: 0.32em;
  }

  .article-category-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .article-category-tab {
    padding-inline: 8px;
  }

  .article-filters {
    grid-template-columns: 1fr;
    padding: 14px;
  }

  .article-filter-meta {
    grid-column: auto;
    justify-content: space-between;
  }

  .article-card__date {
    width: 100%;
    margin-left: 0;
  }

  .article-detail-page {
    padding: 106px 0 72px;
  }

  .article-detail__title {
    font-size: 1.95rem;
  }

  .article-body {
    padding: 24px 20px;
  }

  .article-pagination {
    grid-template-columns: 1fr;
  }

  .article-pagination__spacer {
    display: none;
  }

  .article-pagination__all {
    grid-row: 1;
  }
}

@media (max-width: 430px) {
  .article-category-tab {
    min-height: 42px;
    font-size: 0.78rem;
  }

  .article-card__body {
    padding: 21px;
  }

  .article-detail__meta {
    display: grid;
    gap: 6px;
  }

  .article-breadcrumbs {
    margin-bottom: 24px;
  }
}