/* ============================================================
   cultural-library — frontend/papers
   Adopte design system v0 (assistant-conventions/design-system/).
   Cards text-only (pas de poster, papers académiques) ; abstract
   clamp 4 lines ; category badge + tags ; detail view long form.
   ============================================================ */

:root {
  /* Surcharges DS — palette papers (bleu encre académique) */
  --surface-color-text:        #1a1a1a;
  --surface-color-bg:          #f3f5f8;  /* gris-bleu très pâle */
  --surface-color-card-bg:     #ffffff;
  --surface-color-muted:       #555;
  --surface-color-rule:        #c8cfd8;
  --surface-color-link:        #2c5282;  /* bleu encre */
  --surface-color-link-hover:  #1e3a5f;
  --surface-color-focus:       #2c5282;
  --surface-color-primary:     #2c5282;
  --surface-color-header-bg:   transparent;
  --surface-color-footer-bg:   transparent;

  /* Aliases legacy */
  --fg: var(--surface-color-text);
  --fg-soft: var(--surface-color-muted);
  --fg-muted: #888;
  --bg: var(--surface-color-bg);
  --surface: var(--surface-color-card-bg);
  --accent: var(--surface-color-primary);
  --accent-soft: #dee5ef;
  --border: var(--surface-color-rule);
  --border-soft: #e0e5eb;
  --shadow-card: var(--ds-shadow-sm);
  --shadow-card-hover: var(--ds-shadow-lg);

  /* Color bands rating (cohérent avec autres univers) */
  --r-low:    #f7d7d4;
  --r-mid:    #fce6cf;
  --r-good:   #fff2c2;
  --r-high:   #d9efc8;
  --r-top:    #aedea7;
}

html, body { font-size: 14px; }

/* ───── Layout sidebar + main (cohérent autres univers) ───── */
body.lib-layout {
  margin: 0;
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
.lib-sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 1em 0.9em;
  display: flex; flex-direction: column;
  gap: 0.9em;
  position: sticky; top: 0;
  max-height: 100vh; overflow-y: auto;
  font-size: 0.92em;
}
.lib-brand {
  font-size: 1.3em; font-weight: 700;
  text-decoration: none; color: var(--fg);
  padding: 0.2em 0.4em;
  border-radius: 5px;
  display: block;
}
.lib-brand:hover { background: var(--accent-soft); color: var(--accent); text-decoration: none; }

.lib-nav { display: flex; flex-direction: column; gap: 0.15em; }
.lib-nav a {
  padding: 0.45em 0.6em;
  text-decoration: none;
  color: var(--fg-soft);
  border-radius: 5px;
  font-size: 0.95em;
}
.lib-nav a:hover { background: #f0f3f7; color: var(--fg); text-decoration: none; }
.lib-nav a.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.lib-section { display: flex; flex-direction: column; gap: 0.4em; }
.lib-section-title {
  margin: 0.5em 0 0.1em;
  font-size: 0.72em; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--fg-muted);
}
.lib-link-btn {
  padding: 0.45em 0.7em; font-size: 0.92em;
  border: 1px solid var(--border); background: white;
  border-radius: 5px; cursor: pointer;
  text-decoration: none; color: var(--fg);
  text-align: center;
  display: inline-block;
}
.lib-link-btn:hover { background: #f0f3f7; text-decoration: none; }

.sort-buttons { display: flex; flex-direction: column; gap: 0.18em; }
.sort-btn {
  padding: 0.4em 0.7em; font-size: 0.92em;
  border: 1px solid var(--border); background: white;
  border-radius: 5px; cursor: pointer;
  text-align: left; color: var(--fg-soft);
  display: flex; justify-content: space-between; align-items: center;
  gap: 0.4em;
}
.sort-btn:hover { background: #f0f3f7; color: var(--fg); }
.sort-btn.active {
  background: var(--accent); color: white;
  border-color: var(--accent);
}
.sort-btn .sort-dir { font-weight: 700; min-width: 1em; text-align: right; }

.lib-filter {
  display: flex; align-items: center; gap: 0.4em;
  font-size: 0.92em; color: var(--fg-soft);
}
.lib-filter span { flex: 1; }
.lib-filter input[type=number] {
  width: 4em;
  padding: 0.3em 0.4em; font-size: 0.92em;
  border: 1px solid var(--border); border-radius: 4px;
}
.lib-filter-label {
  margin: 0.5em 0 0.1em;
  font-size: 0.85em; font-weight: 600; color: var(--fg-soft);
}
.chips-wrap { display: flex; flex-wrap: wrap; gap: 0.3em; align-items: center; }
.lib-reset-btn {
  margin-top: 0.6em;
  padding: 0.45em 0.7em; font-size: 0.9em;
  border: 1px solid var(--border); background: white;
  border-radius: 5px; cursor: pointer;
  color: var(--fg-soft);
}
.lib-reset-btn:hover { background: #f0f3f7; }

.control-label.muted { color: var(--fg-muted); font-size: 0.85em; font-style: italic; }

/* Main pane */
.lib-main { min-width: 0; padding: 1.3em 1.5em 2em; }
.lib-main-header {
  padding-bottom: 1em;
  margin-bottom: 0.8em;
  border-bottom: 1px solid var(--border);
}
.lib-main-header h1 {
  margin: 0 0 0.3em; font-size: 1.6em; font-weight: 600;
  font-family: Georgia, "Times New Roman", serif;
}
.lib-main-header p { margin: 0 0 0.7em; color: var(--fg-soft); font-size: 0.95em; }
.lib-search {
  width: 100%; max-width: 480px;
  padding: 0.55em 0.85em; font-size: 1em;
  border: 1px solid var(--border); border-radius: 5px;
}

@media (max-width: 768px) {
  body.lib-layout { grid-template-columns: 1fr; }
  .lib-sidebar {
    position: static;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .lib-main { padding: 1em; }
}

.segmented {
  display: inline-flex !important;
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow: hidden;
  gap: 0 !important;
}
.seg-btn {
  padding: 0.55em 1em;
  background: white; border: none; cursor: pointer;
  font-size: 0.95em;
  color: var(--fg-soft);
}
.seg-btn + .seg-btn { border-left: 1px solid var(--border); }
.seg-btn:hover { background: #f0f3f7; }
.seg-btn.active { background: var(--accent); color: white; }

.chip {
  padding: 0.35em 0.85em;
  border: 1px solid var(--border); background: white;
  border-radius: 16px; font-size: 0.92em;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 0.35em;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}
.chip:hover { background: #f0f3f7; }
.chip[data-state="incl"] {
  background: #2a7a3a; color: white; border-color: #2a7a3a;
}
.chip[data-state="incl"]:hover { background: #226130; }
.chip[data-state="excl"] {
  background: #fce4e4; color: #b03030; border-color: #e9a9a9;
  text-decoration: line-through;
}
.chip[data-state="excl"]:hover { background: #f9d6d6; }
.chip-count {
  font-size: 0.78em;
  color: inherit;
  opacity: 0.75;
  font-variant-numeric: tabular-nums;
}

/* ───── Cards papers (text-only, pas de poster) ───── */
#cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1em;
  padding-top: 0.8em;
}

.card.paper-card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  display: flex; flex-direction: column;
}
.card.paper-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}
.card-link {
  display: flex; flex-direction: column; flex: 1;
  text-decoration: none; color: inherit;
  padding: 0.85em 1em 0.9em;
  gap: 0.45em;
}

.card-paper-header {
  display: flex; justify-content: space-between; align-items: center;
  gap: 0.5em;
}
.card-cat-badge {
  display: inline-block;
  padding: 0.18em 0.55em;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 4px;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 0.78em;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.card-status {
  display: inline-block;
  padding: 0.15em 0.5em;
  border-radius: 10px;
  font-size: 0.72em;
  font-weight: 600;
}
.card-status.read    { background: #d9efc8; color: #2e6020; }
.card-status.reading { background: #fff2c2; color: #7a5c00; }
.card-status.skipped { background: #ececec; color: #777; }
.card-status.to-read { background: var(--accent-soft); color: var(--accent); }

.card-title {
  margin: 0;
  font-size: 1em;
  font-weight: 600;
  line-height: 1.3;
  font-family: Georgia, serif;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-authors {
  margin: 0;
  font-size: 0.82em;
  color: var(--fg-soft);
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-abstract {
  margin: 0;
  font-size: 0.85em;
  color: var(--fg-soft);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.card-footer {
  display: flex; flex-direction: column; gap: 0.35em;
  margin-top: auto;
  padding-top: 0.5em;
  border-top: 1px solid var(--border-soft);
}
.card-stats { display: flex; gap: 0.3em; flex-wrap: wrap; }
.card-tags { display: flex; gap: 0.25em; flex-wrap: wrap; }
.card-tag {
  font-size: 0.72em;
  padding: 0.1em 0.45em;
  background: #f0f3f7;
  color: var(--fg-soft);
  border-radius: 3px;
  white-space: nowrap;
}
.card-meta {
  font-size: 0.78em;
  color: var(--fg-muted);
}

.cell-tag {
  display: inline-block;
  min-width: 2.2em; text-align: center;
  padding: 0.15em 0.45em;
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  font-size: 0.85em;
}
.cell-tag.r-low    { background: var(--r-low); }
.cell-tag.r-mid    { background: var(--r-mid); }
.cell-tag.r-good   { background: var(--r-good); }
.cell-tag.r-high   { background: var(--r-high); }
.cell-tag.r-top    { background: var(--r-top); color: #15521a; }
.cell-tag.big {
  font-size: 1.1em;
  padding: 0.2em 0.6em;
  min-width: 3em;
}

.empty-state {
  text-align: center; color: var(--fg-muted);
  padding: 3em 1em; font-size: 1em;
}

/* ───── Detail view ───── */
.detail-view {
  max-width: 760px;
  margin: 0 auto;
  padding: 1em 0;
}
.detail-back {
  display: inline-block;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.95em;
  margin: 0 0 1em;
}
.detail-back:hover { text-decoration: underline; }

.detail-body { padding: 0 0.5em; }
.detail-info { display: flex; flex-direction: column; }

.detail-cat-row {
  display: flex; align-items: center; gap: 0.7em;
  margin-bottom: 0.5em;
}
.detail-cat-badge {
  padding: 0.2em 0.65em;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 4px;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 0.85em;
  font-weight: 600;
}
.detail-arxiv-id {
  color: var(--fg-muted);
  font-family: "SF Mono", Menlo, monospace;
  font-size: 0.85em;
}

.detail-title {
  margin: 0 0 0.4em;
  font-size: 1.7em;
  font-weight: 700;
  font-family: Georgia, serif;
  line-height: 1.2;
}
.detail-authors {
  margin: 0 0 0.3em;
  color: var(--fg-soft);
  font-style: italic;
  font-size: 0.95em;
}
.detail-subtitle {
  margin: 0 0 1em;
  color: var(--fg-muted);
  font-size: 0.88em;
}
.detail-stats {
  display: flex; flex-wrap: wrap; gap: 0.8em 1.4em;
  margin-bottom: 0.7em;
}
.stat-block {
  display: flex; flex-direction: column; gap: 0.2em;
}
.stat-label {
  font-size: 0.75em;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
  font-weight: 600;
}

.detail-tags {
  margin-bottom: 0.8em;
  display: flex; flex-wrap: wrap; gap: 0.3em; align-items: center;
}

.detail-abstract {
  margin: 1em 0;
  padding: 1em 0;
  font-size: 1em;
  line-height: 1.65;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  white-space: pre-wrap;
  font-family: Georgia, serif;
}

.detail-takeaway {
  margin: 1em 0;
  padding: 0.8em 1em;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  font-size: 0.92em;
}
.detail-takeaway h4 {
  margin: 0 0 0.3em;
  font-size: 0.78em;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  font-weight: 600;
}
.detail-takeaway p {
  margin: 0;
  font-style: italic;
}

.detail-notes-display {
  margin: 0.8em 0;
  padding: 0.7em 0.9em;
  background: #fff8e6;
  border-left: 3px solid #d4a017;
  border-radius: 4px;
  white-space: pre-wrap;
  font-size: 0.92em;
}

.detail-links {
  margin: 1.5em 0 1em;
  font-size: 0.95em;
}
.detail-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.detail-links a:hover { text-decoration: underline; }

footer {
  padding: 1em; text-align: center; color: var(--fg-soft); font-size: 0.8em;
  border-top: 1px solid var(--border-soft);
}

@media (max-width: 700px) {
  .detail-title { font-size: 1.4em; }
  #cards { grid-template-columns: 1fr; gap: 0.7em; }
}