/* ==========================================================================
   Today's Paper — featured card, archive list, and detail page.
   Visual language matches wiki.css / news.css: #2c3e50 navy, #0085A1 teal,
   14px rounded cards, soft hover shadows, pill tags.
   ========================================================================== */

/* ---- Empty state ---- */
.paper-empty-state {
  padding: 2.5rem 2rem;
  text-align: center;
  color: #888;
  font-style: italic;
  background: #f8f9fa;
  border-radius: 14px;
}

/* ---- Featured (latest) card ---- */
.paper-featured-card {
  display: flex;
  gap: 1.75rem;
  padding: 1.75rem 2rem;
  margin-bottom: 2rem;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.paper-featured-label {
  display: inline-block;
  margin-bottom: 0.6rem;
  padding: 3px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: 999px;
  background: #0085A1;
  color: #fff;
}

.paper-featured-image {
  flex-shrink: 0;
  width: 220px;
}

.paper-featured-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  object-fit: cover;
}

.paper-featured-content {
  flex: 1;
  min-width: 0;
}

.paper-featured-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0 0 0.4rem;
  line-height: 1.4;
}

.paper-featured-title a {
  color: #222;
  text-decoration: none;
}

.paper-featured-title a:hover {
  color: #0085A1;
  text-decoration: underline;
}

.paper-featured-meta {
  color: #888;
  font-size: 0.9rem;
  margin-bottom: 0.7rem;
}

.paper-featured-meta .paper-journal {
  font-style: italic;
}

.paper-featured-summary {
  color: #444;
  line-height: 1.7;
  margin-bottom: 0.9rem;
}

.paper-featured-tags {
  margin-bottom: 0.9rem;
}

.paper-read-more {
  font-size: 0.9rem;
  font-weight: 700;
  color: #0085A1;
  text-decoration: none;
}

.paper-read-more:hover {
  text-decoration: underline;
}

.paper-read-more i {
  font-size: 0.75rem;
  margin-left: 4px;
}

/* ---- Archive (older papers) ---- */
.paper-archive-heading {
  font-weight: 800;
  color: #2c3e50;
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
}

.paper-archive-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.paper-archive-item {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.paper-archive-item:last-child {
  border-bottom: none;
}

.paper-archive-date {
  flex-shrink: 0;
  width: 90px;
  color: #888;
  font-size: 0.85rem;
}

.paper-archive-item a {
  font-weight: 700;
  color: #222;
  text-decoration: none;
}

.paper-archive-item a:hover {
  color: #0085A1;
  text-decoration: underline;
}

.paper-archive-journal {
  color: #888;
  font-size: 0.85rem;
  font-style: italic;
}

/* ---- Detail page ---- */
.paper-detail-card {
  padding: 1.8rem 2rem;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  background: #fff;
  margin-bottom: 1.5rem;
}

.paper-detail-img {
  width: 100%;
  max-width: 420px;
  display: block;
  margin: 0 auto 1.4rem;
  border-radius: 10px;
}

.paper-detail-meta {
  color: #888;
  font-size: 0.92rem;
  margin-bottom: 0.2rem;
}

.paper-detail-journal {
  font-style: italic;
}

.paper-detail-journal::before {
  content: "\00b7";
  margin: 0 0.4rem;
}

.paper-detail-authors {
  color: #666;
  font-size: 0.92rem;
  margin-bottom: 0.8rem;
}

.paper-detail-tags {
  margin-bottom: 1rem;
}

.paper-detail-body {
  font-size: 1.08rem;
  line-height: 1.75;
  color: #333;
}

.paper-detail-body p:last-child {
  margin-bottom: 0;
}

.paper-detail-source {
  margin-top: 1.4rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.paper-detail-source a {
  font-weight: 700;
  color: #0085A1;
  text-decoration: none;
}

.paper-detail-source a:hover {
  text-decoration: underline;
}

/* ---- Mobile ---- */
@media (max-width: 600px) {
  .paper-featured-card {
    flex-direction: column;
    padding: 1.3rem 1.4rem;
  }

  .paper-featured-image {
    width: 100%;
    max-width: 260px;
  }

  .paper-archive-item {
    flex-direction: column;
    gap: 0.2rem;
  }

  .paper-archive-date {
    width: auto;
  }

  .paper-detail-card {
    padding: 1.3rem 1.4rem;
  }
}