/* ── BREADCRUMB / TOP BAR ── */
.top-bar {
  background: var(--primary-dark); padding: 10px 5%;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px;
}
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 12px; }
.breadcrumb a { color: rgba(168,212,240,.7); text-decoration: none; transition: color .18s; }
.breadcrumb a:hover { color: var(--sky); }
.breadcrumb span { color: rgba(168,212,240,.35); }
.breadcrumb strong { color: var(--sky); }
.issue-nav-btns { display: flex; gap: 8px; }
.issue-nav-btn {
  font-size: 12px; font-weight: 600; padding: 5px 14px; border-radius: 6px;
  text-decoration: none; border: 1px solid rgba(168,212,240,.25);
  color: rgba(168,212,240,.7); transition: all .18s; display: flex; align-items: center; gap: 5px;
}
.issue-nav-btn:hover { background: rgba(168,212,240,.1); color: var(--sky); }

/* ── ISSUE HERO ── */
.issue-hero {
    background: linear-gradient(        135deg,        #7B2F8F 0%,        #A66AD4 50%,        #C8A8EA 100%    );
    padding: 48px 5% 0;
    position: relative;
    overflow: hidden;
}
.issue-hero::before {
  content: ''; position: absolute;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(168,212,240,.06), transparent 70%);
  top: -200px; right: -100px; pointer-events: none;
}
.issue-hero-inner { display: grid; grid-template-columns: 1fr 300px; gap: 48px; align-items: end; }
.issue-hero-content { padding-bottom: 48px; }

.issue-vol-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(201,168,76,.15); border: 1px solid rgba(201,168,76,.4);
  color: #e8c96a; padding: 5px 16px; border-radius: 30px;
  font-size: 11.5px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase;
  margin-bottom: 20px;
}
.issue-vol-badge::before { content: '📖'; font-size: 11px; }

.issue-hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(26px, 3.5vw, 40px); font-weight: 700;
  color: var(--white); line-height: 1.22; margin-bottom: 10px;
}
.issue-date-line {
  font-size: 13.5px; color: rgba(168,212,240,.75); margin-bottom: 22px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.issue-date-line span { display: flex; align-items: center; gap: 5px; }
.issue-date-sep { color: rgba(168,212,240,.25); }
.issue-meta-pills { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.meta-pill {
  font-size: 11.5px; font-weight: 500; padding: 4px 12px; border-radius: 20px;
  background: rgba(168,212,240,.1); border: 1px solid rgba(168,212,240,.22);
  color: rgba(168,212,240,.8);
}
.issue-hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* Issue cover card rising from bottom */
.issue-cover-wrap {
  align-self: flex-end; position: relative;
}
.issue-cover-card {
  background: var(--white); border-radius: 16px 16px 0 0;
  overflow: hidden; box-shadow: 0 -8px 40px rgba(0,0,0,.3);
  width: 260px;
}
.cover-top {
  background: var(--bgsoft); padding: 14px 16px 10px;
  border-bottom: 1px solid var(--border);
}
.cover-issn { font-size: 9.5px; color: var(--muted); letter-spacing: .7px; text-transform: uppercase; margin-bottom: 7px; }
.cover-logo-row { display: flex; align-items: center; gap: 9px; }
.cover-logo-circle {
  width: 38px; height: 38px; border-radius: 50%; border: 2px solid var(--primary-dark);
  display: flex; align-items: center; justify-content: center; flex-direction: column; flex-shrink: 0;
}
.cover-logo-circle span { font-family: 'Space Grotesk',sans-serif; font-size: 10px; font-weight: 700; color: var(--primary-dark); line-height: 1; }
.cover-logo-circle small { font-size: 5.5px; color: var(--muted); }
.cover-journal-name { font-family: 'Space Grotesk',sans-serif; font-size: 15px; font-weight: 700; color: var(--primary-dark); }
.cover-journal-name em { color: var(--teal); font-style: normal; }
.cover-illustration {
  background: linear-gradient(180deg, #b8d8f0 0%, #5a9fd4 45%, var(--primary-dark) 100%);
  height: 150px; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.cover-body { padding: 12px 16px; }
.cover-vol-label { font-size: 10px; font-weight: 700; color: var(--muted); letter-spacing: .8px; text-transform: uppercase; margin-bottom: 6px; }
.cover-scope-list { display: flex; flex-direction: column; gap: 4px; }
.cover-scope-item { font-size: 11px; color: var(--primary-dark); font-weight: 500; display: flex; align-items: center; gap: 6px; }
.cover-scope-item::before { content: '|'; color: var(--primary); font-weight: 700; }

/* ── STATS STRIP ── */
.stats-strip {
  background: rgba(26,58,92,.95); backdrop-filter: blur(10px);
  border-top: 1px solid rgba(168,212,240,.12);
  padding: 18px 5%; display: flex; gap: 0; flex-wrap: wrap;
}
.stat-item { padding: 0 32px; border-right: 1px solid rgba(168,212,240,.15); text-align: center; }
.stat-item:first-child { padding-left: 0; }
.stat-item:last-child { border-right: none; }
.stat-num { font-family: 'Space Grotesk',sans-serif; font-size: 22px; font-weight: 700; color: var(--sky); }
.stat-label { font-size: 10.5px; color: rgba(168,212,240,.55); text-transform: uppercase; letter-spacing: .5px; margin-top: 2px; }

/* ── MAIN LAYOUT ── */
.main-layout {
  display: grid; grid-template-columns: 1fr 800px; gap: 32px;
  max-width: 1200px; margin: 0 auto; padding: 40px 5% 72px;
  align-items: start;
}

/* ── SIDEBAR ── */
.sidebar { position: sticky; top: 84px; display: flex; flex-direction: column; gap: 16px; }
.sidebar-card { background: var(--white); border-radius: 14px; border: 1.5px solid var(--border); overflow: hidden; }
.sidebar-header { background: var(--primary-dark); padding: 13px 18px; font-family: 'Space Grotesk',sans-serif; font-size: 11.5px; font-weight: 600; color: var(--sky); letter-spacing: .8px; text-transform: uppercase; }
.sidebar-body { padding: 14px 0; }
.toc-item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 9px 18px; text-decoration: none; transition: all .18s;
  border-left: 3px solid transparent; cursor: pointer;
}
.toc-item:hover { background: var(--bg); border-left-color: var(--primary); }
.toc-item.active { background: var(--bg); border-left-color: var(--primary); }
.toc-num { font-family: 'Space Grotesk',sans-serif; font-size: 11px; font-weight: 700; color: var(--primary); background: var(--bg); padding: 2px 7px; border-radius: 5px; flex-shrink: 0; margin-top: 1px; }
.toc-title { font-size: 12px; color: var(--text); line-height: 1.45; font-weight: 500; }
.toc-item.active .toc-title { color: var(--primary); }

/* Issue info card */
.info-card-body { padding: 16px 18px; }
.info-row { display: flex; justify-content: space-between; align-items: flex-start; padding: 9px 0; border-bottom: 1px solid var(--border); font-size: 12.5px; gap: 12px; }
.info-row:last-child { border-bottom: none; padding-bottom: 0; }
.info-key { color: var(--muted); font-weight: 500; flex-shrink: 0; }
.info-val { color: var(--primary-dark); font-weight: 600; text-align: right; }

/* Submit CTA card */
.submit-card { background: linear-gradient(135deg, var(--primary-dark), #2d6a9f); border-radius: 14px; padding: 20px; text-align: center; }
.submit-card h4 { font-family: 'Space Grotesk',sans-serif; font-size: 14px; font-weight: 600; color: var(--white); margin-bottom: 7px; }
.submit-card p { font-size: 12px; color: rgba(168,212,240,.75); margin-bottom: 14px; line-height: 1.55; }
.submit-card .btn-teal { width: 100%; justify-content: center; font-size: 13px; padding: 10px; }

/* ── CONTENT ── */
.content-area { min-width: 0; }

/* Section label */
.content-section-label {
  display: flex; align-items: center; gap: 12px; margin-bottom: 20px;
}
.csl-eyebrow { font-size: 10.5px; font-weight: 700; color: var(--teal); letter-spacing: 1px; text-transform: uppercase; }
.csl-title { font-family: 'Space Grotesk',sans-serif; font-size: 19px; font-weight: 700; color: var(--primary-dark); }
.csl-line { flex: 1; height: 1.5px; background: linear-gradient(90deg, var(--border), transparent); }
.csl-count { font-size: 11.5px; color: var(--muted); background: var(--bg); padding: 3px 11px; border-radius: 20px; }

/* ── ARTICLE CARDS ── */
.article-card {
  background: var(--white); border-radius: 16px; border: 1.5px solid var(--border);
  margin-bottom: 20px; overflow: hidden; transition: all .22s;
  scroll-margin-top: 90px;
}
.article-card:hover { border-color: var(--primary); box-shadow: 0 6px 28px rgba(45,106,159,.1); }
.article-card:last-child { margin-bottom: 0; }

/* Card accent bar */
.article-accent { height: 4px; }
.accent-bio   { background: linear-gradient(90deg, #2d7a55, #4caf7d); }
.accent-env   { background: linear-gradient(90deg, #006978, #4dd0e1); }
.accent-chem  { background: linear-gradient(90deg, #1e5f9a, #4a90d9); }
.accent-agri  { background: linear-gradient(90deg, #5a8c2a, #9ccc65); }
.accent-micro { background: linear-gradient(90deg, #6a1b9a, #ab47bc); }

.article-inner { padding: 24px 26px; }

/* Article header */
.article-header { display: flex; align-items: flex-start; gap: 18px; margin-bottom: 16px; }
.article-index {
  flex-shrink: 0; width: 44px; height: 44px; border-radius: 10px;
  background: var(--bg); display: flex; align-items: center; justify-content: center;
  font-family: 'Space Grotesk',sans-serif; font-size: 15px; font-weight: 700; color: var(--primary);
  margin-top: 2px;
}
.article-header-text { flex: 1; }
.article-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.tag { font-size: 10px; font-weight: 700; padding: 2.5px 9px; border-radius: 4px; text-transform: uppercase; letter-spacing: .5px; }
.tag-bio   { background: #e7f5ef; color: #2d7a55; }
.tag-agri  { background: #f0f7e0; color: #5a8c2a; }
.tag-env   { background: #e0f7fa; color: #006978; }
.tag-chem  { background: #e8f0fb; color: var(--primary); }
.tag-micro { background: #f3e5f5; color: #6a1b9a; }
.tag-rev   { background: #fff3e0; color: #b76e00; }
.tag-orig  { background: #e8f0fb; color: var(--primary-dark); }

.article-title {
  font-family: 'Playfair Display', serif;
  font-size: 18px; font-weight: 700; color: var(--primary-dark); line-height: 1.38;
  margin-bottom: 10px;
}
.article-authors {
  font-size: 13px; color: var(--muted); line-height: 1.55; margin-bottom: 5px;
}
.article-authors strong { color: #3d6080; font-weight: 600; }
.article-affil {
  font-size: 12px; color: var(--muted); display: flex; align-items: flex-start; gap: 5px;
  margin-bottom: 14px;
}
.article-affil::before { content: '🏛️'; font-size: 11px; flex-shrink: 0; }

/* Abstract */
.abstract-block { background: var(--bgsoft); border-radius: 10px; border-left: 3px solid var(--sky); padding: 16px 18px; margin-bottom: 16px; }
.abstract-label { font-size: 10.5px; font-weight: 700; color: var(--primary); letter-spacing: .8px; text-transform: uppercase; margin-bottom: 7px; }
.abstract-text { font-size: 13.5px; color: #3a5268; line-height: 1.75; }
.abstract-text.clamped { display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.read-more-btn {
  background: none; border: none; cursor: pointer; font-size: 12.5px;
  color: var(--primary); font-weight: 600; padding: 0; margin-top: 6px;
  font-family: 'Inter', sans-serif; display: flex; align-items: center; gap: 4px;
}
.read-more-btn:hover { color: var(--primary-dark); }

/* Meta row */
.article-meta-row {
  display: flex; align-items: center; gap: 0; flex-wrap: wrap;
  border-top: 1.5px solid var(--border); padding-top: 14px; margin-top: 4px;
}
.meta-chip {
  font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 5px;
  padding: 0 16px; border-right: 1px solid var(--border);
}
.meta-chip:first-child { padding-left: 0; }
.meta-chip:last-child { border-right: none; }
.meta-chip strong { color: var(--primary-dark); font-weight: 600; }

/* Citation + DOI block */
.citation-block {
  background: var(--bg); border-radius: 8px; padding: 12px 16px; margin-top: 14px;
}
.citation-label { font-size: 10.5px; font-weight: 700; color: var(--muted); letter-spacing: .7px; text-transform: uppercase; margin-bottom: 5px; }
.citation-text { font-size: 12px; color: #3a5268; line-height: 1.65; font-family: Georgia, serif; }
.citation-text a { color: var(--primary); word-break: break-all; }
.doi-row { display: flex; align-items: center; gap: 8px; margin-top: 7px; }
.doi-label { font-size: 10.5px; font-weight: 700; color: var(--muted); letter-spacing: .6px; text-transform: uppercase; flex-shrink: 0; }
.doi-link { font-size: 12px; color: var(--primary); font-family: monospace; word-break: break-all; }

/* Action buttons */
.article-actions {
  display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap;
}
.btn-view { background: var(--bg); color: var(--primary); border: 1.5px solid var(--border); }
.btn-view:hover { border-color: var(--primary); background: var(--white); }
.btn-pdf { background: var(--teal); color: var(--white); border: 1.5px solid var(--teal); }
.btn-pdf:hover { background: #3d9a6b; }
.btn-cite { background: var(--white); color: var(--primary-dark); border: 1.5px solid var(--border); }
.btn-cite:hover { border-color: var(--primary-dark); }

/* ── KEYWORDS CLOUD ── */
.keywords-block { margin-top: 12px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.kw-label { font-size: 10.5px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .6px; flex-shrink: 0; }
.kw-tag {
  font-size: 11.5px; padding: 3px 10px; border-radius: 5px;
  background: var(--bgsoft); color: var(--primary); border: 1px solid var(--border);
  font-weight: 500;
}

/* ── PAGINATION NAV ── */
.issue-pagination {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--white); border-radius: 14px; border: 1.5px solid var(--border);
  padding: 20px 24px; margin-top: 32px;
}
.pag-btn {
  display: flex; align-items: center; gap: 10px; text-decoration: none;
  padding: 10px 18px; border-radius: 9px; border: 1.5px solid var(--border);
  transition: all .2s; color: var(--text);
}
.pag-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--bg); }
.pag-btn-label { font-size: 10px; color: var(--muted); font-weight: 600; letter-spacing: .6px; text-transform: uppercase; }
.pag-btn-title { font-family: 'Space Grotesk',sans-serif; font-size: 13.5px; font-weight: 600; color: var(--primary-dark); }
.pag-center { text-align: center; }
.pag-current { font-family: 'Space Grotesk',sans-serif; font-size: 14px; font-weight: 700; color: var(--primary-dark); }
.pag-of { font-size: 12px; color: var(--muted); margin-top: 2px; }