/* FinteQC Papers — front-end stylesheet v1.3.1 */

.fq-wrap *, .fq-wrap *::before, .fq-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }

.fq-wrap {
  --navy: #1a2e4a;
  --navy-light: #2a4068;
  --red: #c0392b;
  --blue: #2471a3;
  --surface-soft: #e8f4fd;
  --gray-bg: #f4f6f8;
  --border: #dde3eb;
  --muted: #6b7c93;
  --white: #ffffff;
  --text-body: #2c3e50;
  --font-head: 'Source Serif 4', Georgia, serif;
  --font-body: 'DM Sans', 'Segoe UI', sans-serif;
  --paper-max-width: 1160px;
  --sidebar-width: 320px;
  --layout-gap: 40px;
  --page-padding: 40px;
  --card-radius: 10px;
  --control-radius: 8px;
  font-family: var(--font-body);
  color: var(--navy);
  background: var(--white);
  line-height: 1.6;
}

/* ── Breadcrumb ─────────────────────────────────────────────────────────── */
.fq-breadcrumb {
  background: var(--gray-bg);
  padding: 12px var(--page-padding);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.fq-breadcrumb a,
.fq-breadcrumb span { font-size: 12.5px; color: var(--muted); text-decoration: none; }
.fq-breadcrumb a:hover { color: var(--blue); }
.fq-breadcrumb .sep { color: var(--border); }
.fq-breadcrumb .current { color: var(--navy); font-weight: 500; }

/* ── Layout ─────────────────────────────────────────────────────────────── */
.fq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, var(--sidebar-width));
  gap: var(--layout-gap);
  max-width: var(--paper-max-width);
  margin: 0 auto;
  padding: var(--page-padding);
}
.fq-wrap.is-sidebar-left .fq-sidebar { order: -1; }
.fq-wrap.is-stacked .fq-layout { grid-template-columns: 1fr; }

/* ── Paper header ───────────────────────────────────────────────────────── */
.fq-type-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-soft);
  color: var(--blue);
  font-size: 11.5px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--control-radius);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.fq-wrap h1.fq-title {
  font-family: var(--font-head) !important;
  font-size: 26px !important;
  font-weight: 400 !important;
  color: var(--navy) !important;
  line-height: 1.35 !important;
  letter-spacing: 0 !important;
  text-transform: none !important;
  font-style: normal !important;
  text-decoration: none !important;
  margin-top: 0 !important;
  margin-bottom: 20px !important;
}

/* ── Authors ────────────────────────────────────────────────────────────── */
.fq-author-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
.fq-author-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--gray-bg);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
}
.fq-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 600; color: white; flex-shrink: 0;
}
.fq-author-info { display: flex; flex-direction: column; line-height: 1.3; }
.fq-author-info .name { font-size: 13px; font-weight: 500; color: var(--navy); }
.fq-author-info .affil { font-size: 11px; color: var(--muted); }
.fq-wrap .fq-corresp {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-size: 10px; background: var(--red); color: #ffffff !important;
  padding: 1px 6px; border-radius: 3px; margin-left: 4px; vertical-align: middle;
  line-height: 1.2;
  text-decoration: none !important;
  text-shadow: none !important;
}
.fq-wrap a.fq-corresp,
.fq-wrap a.fq-corresp:link,
.fq-wrap a.fq-corresp:visited,
.fq-wrap a.fq-corresp:hover,
.fq-wrap a.fq-corresp:focus-visible,
.fq-wrap .fq-author-info .name a.fq-corresp {
  color: #ffffff !important;
  text-decoration: none !important;
}
.fq-wrap a.fq-corresp[data-email]:hover::after,
.fq-wrap a.fq-corresp[data-email]:focus-visible::after {
  content: attr(data-email);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 7px);
  transform: translateX(-50%);
  z-index: 5;
  max-width: 220px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  background: var(--navy);
  color: #ffffff;
  border-radius: 4px;
  padding: 5px 7px;
  box-shadow: 0 8px 18px rgba(26, 46, 74, 0.18);
  font-size: 11px;
  font-weight: 500;
  pointer-events: none;
}

/* ── Meta row ───────────────────────────────────────────────────────────── */
.fq-meta-row {
  display: flex; flex-wrap: wrap; gap: 20px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.fq-meta-item { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.fq-meta-item svg { flex-shrink: 0; opacity: 0.7; }
.fq-meta-item strong { color: var(--navy); font-weight: 500; }

/* ── Section label ──────────────────────────────────────────────────────── */
.fq-section-label {
  font-family: var(--font-head);
  font-size: 16px; font-weight: 600; color: var(--navy);
  margin-bottom: 12px; padding-bottom: 8px;
  border-bottom: 2px solid var(--red);
  display: inline-block;
}
.fq-section { margin-bottom: 36px; }

/* ── Abstract ───────────────────────────────────────────────────────────── */
.fq-abstract,
.fq-abstract p { font-size: 14.5px; color: var(--text-body); line-height: 1.75; }

/* ── Keywords ───────────────────────────────────────────────────────────── */
.fq-kw-list { display: flex; flex-wrap: wrap; gap: 8px; }
.fq-kw-tag {
  background: var(--surface-soft); border: 1px solid var(--border);
  color: var(--navy-light); font-size: 12.5px; padding: 4px 12px; border-radius: 3px;
}

/* ── References ─────────────────────────────────────────────────────────── */
.fq-ref-item {
  font-size: 13px; color: var(--muted); line-height: 1.6;
  padding: 10px 0; border-bottom: 1px solid var(--border);
  display: flex; gap: 10px;
}
.fq-ref-num { color: var(--red); font-weight: 600; font-size: 12px; min-width: 22px; flex-shrink: 0; }
.fq-ref-doi { color: var(--blue); font-size: 12px; text-decoration: none; }
.fq-ref-doi:hover { text-decoration: underline; }

/* ── Sidebar cards ──────────────────────────────────────────────────────── */
.fq-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--card-radius);
  overflow: hidden;
  margin-bottom: 20px;
}
.fq-card-header {
  background: var(--navy);
  padding: 14px 18px;
  display: flex; align-items: center; gap: 8px;
}
.fq-card-header span { color: white; font-size: 14px; font-weight: 500; }
.fq-card-body { padding: 16px 18px; }

/* ── Buttons ────────────────────────────────────────────────────────────── */
.fq-wrap .fq-btn,
.fq-wrap a.fq-btn,
.fq-wrap button.fq-btn,
.fq-wrap span.fq-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 11px; border-radius: var(--control-radius);
  font-size: 13.5px; font-weight: 500; cursor: pointer; border: none;
  margin-bottom: 8px; text-decoration: none;
  font-family: var(--font-body);
  line-height: 1.25;
  appearance: none;
  -webkit-appearance: none;
  box-shadow: none;
  outline: none;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}
.fq-wrap .fq-btn svg { flex-shrink: 0; }
.fq-wrap .fq-btn.primary   { background: var(--red); color: #ffffff; }
.fq-wrap .fq-btn.secondary { background: var(--navy); color: #ffffff; }
.fq-wrap .fq-btn.outline   { background: transparent; color: var(--navy); border: 1.5px solid var(--border); }
.fq-wrap .fq-btn.primary:hover,
.fq-wrap .fq-btn.primary:focus-visible,
.fq-wrap .fq-btn.primary:active {
  background: var(--navy);
  color: #ffffff;
  border-color: var(--navy);
  box-shadow: 0 10px 22px rgba(26, 46, 74, 0.18);
  transform: translateY(-1px);
}
.fq-wrap .fq-btn.secondary:hover,
.fq-wrap .fq-btn.secondary:focus-visible,
.fq-wrap .fq-btn.secondary:active {
  background: var(--navy-light);
  color: #ffffff;
  border-color: var(--navy-light);
  box-shadow: 0 10px 22px rgba(26, 46, 74, 0.18);
  transform: translateY(-1px);
}
.fq-wrap .fq-btn.outline:hover,
.fq-wrap .fq-btn.outline:focus-visible,
.fq-wrap .fq-btn.outline:active {
  background: var(--surface-soft);
  color: var(--navy);
  border-color: var(--navy-light);
  box-shadow: 0 10px 22px rgba(26, 46, 74, 0.1);
  transform: translateY(-1px);
}
.fq-wrap .fq-btn.fq-disabled,
.fq-wrap .fq-btn.fq-disabled:hover,
.fq-wrap .fq-btn.fq-disabled:focus-visible,
.fq-wrap .fq-btn.fq-disabled:active {
  opacity: 0.4;
  pointer-events: none;
  transform: none;
  box-shadow: none;
  background: var(--red);
  color: #ffffff;
}

/* ── DOI box ────────────────────────────────────────────────────────────── */
.fq-divider { height: 1px; background: var(--border); margin: 12px 0; }
.fq-doi-box {
  background: var(--surface-soft); border: 1px solid var(--border);
  border-radius: var(--control-radius); padding: 12px;
  display: grid;
  gap: 10px;
}
.fq-doi-box.is-empty { background: var(--gray-bg); }
.fq-doi-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.fq-doi-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 4px; }
.fq-doi-link {
  color: var(--blue);
  font-size: 11.5px;
  font-weight: 600;
  text-decoration: none;
}
.fq-doi-link:hover,
.fq-doi-link:focus-visible { text-decoration: underline; }
.fq-doi-value {
  font-size: 12.5px;
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', monospace;
  word-break: break-word;
  line-height: 1.6;
}
.fq-doi-box.is-empty .fq-doi-value {
  color: var(--muted);
  font-family: var(--font-body);
}
.fq-doi-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.fq-wrap .fq-copy-btn,
.fq-wrap button.fq-copy-btn {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-height: 38px;
  padding: 0 14px !important;
  border-radius: var(--control-radius) !important;
  border: 1px solid var(--navy) !important;
  background: var(--navy) !important;
  color: #ffffff !important;
  cursor: pointer;
  margin: 0;
  font-family: var(--font-body) !important;
  font-size: 12px !important;
  font-weight: 600 !important;
  text-decoration: none !important;
  letter-spacing: 0.01em;
  line-height: 1 !important;
  appearance: none !important;
  -webkit-appearance: none !important;
  box-shadow: none !important;
  outline: none !important;
  transition: background-color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}
.fq-wrap .fq-copy-btn:hover,
.fq-wrap .fq-copy-btn:focus-visible,
.fq-wrap .fq-copy-btn:active {
  background: var(--navy-light) !important;
  border-color: var(--navy-light) !important;
  color: #ffffff !important;
  box-shadow: 0 10px 22px rgba(26, 46, 74, 0.16) !important;
  transform: translateY(-1px);
}
.fq-wrap .fq-copy-btn.is-success,
.fq-wrap .fq-copy-btn.is-success:hover,
.fq-wrap .fq-copy-btn.is-success:focus-visible,
.fq-wrap .fq-copy-btn.is-success:active {
  background: var(--red) !important;
  border-color: var(--red) !important;
  color: #ffffff !important;
}
.fq-wrap .fq-copy-btn.is-error,
.fq-wrap .fq-copy-btn.is-error:hover,
.fq-wrap .fq-copy-btn.is-error:focus-visible,
.fq-wrap .fq-copy-btn.is-error:active {
  background: transparent !important;
  border-color: var(--red) !important;
  color: var(--red) !important;
  box-shadow: none !important;
  transform: none;
}
.fq-copy-status {
  font-size: 11.5px;
  color: var(--muted);
  line-height: 1.4;
}
.fq-copy-status:empty { display: none; }
.fq-copy-status.is-muted { color: var(--muted); }

/* ── Info list ──────────────────────────────────────────────────────────── */
.fq-info-list { list-style: none; }
.fq-info-list li {
  display: flex; justify-content: space-between; align-items: center;
  padding: 7px 0; font-size: 13px; border-bottom: 1px solid #f2f2f2;
}
.fq-info-list li:last-child { border-bottom: none; }
.fq-info-list .lbl { color: var(--muted); }
.fq-info-list .val { color: var(--navy); font-weight: 500; text-align: right; max-width: 60%; }
.fq-session-badge {
  display: inline-block; background: var(--surface-soft); border: 1px solid var(--border);
  color: var(--blue); font-size: 12px; padding: 4px 10px; border-radius: var(--control-radius); font-weight: 500;
}

/* ── Stats ──────────────────────────────────────────────────────────────── */
.fq-stats-row { display: flex; gap: 8px; margin-bottom: 20px; }
.fq-stat-box { flex: 1; background: var(--gray-bg); border-radius: 8px; padding: 12px 10px; text-align: center; }
.fq-stat-box { border-radius: var(--control-radius); }
.fq-stat-box .num { font-size: 22px; font-weight: 600; color: var(--navy); }
.fq-stat-box .lbl { font-size: 11px; color: var(--muted); margin-top: 2px; }

/* ── Cite block ─────────────────────────────────────────────────────────── */
.fq-cite-tabs { display: flex; gap: 6px; margin-bottom: 10px; }
.fq-wrap .fq-cite-tab,
.fq-wrap button.fq-cite-tab {
  flex: 1; padding: 6px; font-size: 12px; border-radius: var(--control-radius); cursor: pointer;
  font-family: var(--font-body); font-weight: 500;
  border: 1.5px solid var(--border); background: transparent; color: var(--navy);
  appearance: none;
  -webkit-appearance: none;
  box-shadow: none;
  outline: none;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.fq-wrap .fq-cite-tab:hover,
.fq-wrap .fq-cite-tab:focus-visible {
  border-color: var(--navy-light);
  box-shadow: 0 6px 14px rgba(26, 46, 74, 0.08);
}
.fq-wrap .fq-cite-tab.active,
.fq-wrap .fq-cite-tab.active:hover,
.fq-wrap .fq-cite-tab.active:focus-visible,
.fq-wrap .fq-cite-tab.active:active { background: var(--red); color: white; border-color: var(--red); box-shadow: none; }
.fq-cite-output {
  background: var(--surface-soft); border: 1px dashed var(--border);
  border-radius: var(--control-radius); padding: 12px; font-size: 12px; font-family: monospace;
  color: var(--text-body); line-height: 1.7; white-space: pre-wrap; word-break: break-word;
}
.fq-cite-actions { margin-top: 12px; }
.fq-cite-actions .fq-btn { margin-bottom: 0; }

/* ── Footer note ────────────────────────────────────────────────────────── */
.fq-footer-note {
  font-size: 11.5px; color: var(--muted); text-align: center;
  padding: calc(var(--page-padding) * 0.6) var(--page-padding); border-top: 1px solid var(--border); margin-top: 8px;
}
.fq-footer-note a { color: var(--blue); text-decoration: none; }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 820px) {
  .fq-layout { grid-template-columns: 1fr; padding: 20px 16px; gap: 24px; }
  .fq-sidebar { order: -1; }
  .fq-breadcrumb { padding: 10px 16px; }
  .fq-wrap h1.fq-title { font-size: 20px; }
  .fq-footer-note { padding: 16px; }
  .fq-doi-head,
  .fq-doi-actions { align-items: stretch; }
  .fq-doi-head,
  .fq-doi-actions { flex-direction: column; }
  .fq-wrap .fq-copy-btn,
  .fq-wrap button.fq-copy-btn { width: 100%; }
}