/* learn.drbernardho.com — components layered on the shared Hunter Green / Sand Dune system */

/* Filters */
.filters{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{background:var(--surface);border:1.5px solid var(--line);color:var(--ink);
  padding:6px 13px;border-radius:20px;font-size:13px;font-weight:500;transition:all .12s}
.chip:hover{border-color:var(--brand-green)}
.chip.active{background:var(--navy);color:var(--on-accent);border-color:var(--navy)}

/* Library cards (extends .card / .grid from styles.css) */
.lib-card{cursor:pointer}
.lib-card .card-thumb{font-family:'Lora',serif;font-weight:700;letter-spacing:.06em}
.kind-note .card-thumb{background:linear-gradient(135deg,var(--surface-2),var(--parchment))}
.kind-pdf  .card-thumb{background:var(--thumb-pdf)}
.kind-slide .card-thumb{background:var(--thumb-pptx)}
.kind-image .card-thumb{padding:0}
.kind-image .card-thumb img{width:100%;height:100%;object-fit:cover}
.lib-kind{position:absolute;top:10px;left:10px;background:var(--brand-green);color:var(--brand-sand);
  font-size:10px;font-weight:600;padding:3px 8px;border-radius:20px;letter-spacing:.04em;text-transform:uppercase}
.tag-row{display:flex;flex-wrap:wrap;gap:5px;margin-top:8px}
.tag{font-size:10.5px;background:var(--surface-2);color:var(--blue);border:1px solid var(--line);
  padding:2px 7px;border-radius:6px;font-weight:500}
.card-summary{font-size:12.5px;color:var(--slate);line-height:1.45;margin-top:4px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.badge-auto{font-size:9.5px;background:#c98a18;color:#fff;padding:1px 6px;border-radius:10px;
  font-weight:600;letter-spacing:.03em;vertical-align:middle}

/* References (Zotero) */
.z-status{font-size:13px;color:var(--slate);margin-bottom:14px}
.z-status.err{color:var(--danger);font-weight:500}
.ref-list{display:flex;flex-direction:column;gap:12px}
.ref-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;box-shadow:var(--shadow)}
.ref-title{font-family:'Lora',serif;font-weight:600;font-size:15px;line-height:1.3;color:var(--ink)}
.ref-meta{font-size:12.5px;color:var(--slate);margin-top:3px}
.ref-bib{font-size:12.5px;color:var(--ink);margin-top:8px;line-height:1.5;opacity:.9}
.ref-foot{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:10px}
.ref-foot a{font-size:12px;color:var(--blue);font-weight:600;text-decoration:none;
  border:1px solid var(--line);padding:4px 10px;border-radius:7px}
.ref-foot a:hover{border-color:var(--brand-green)}
.ref-key{font-size:11px;color:var(--slate);font-family:ui-monospace,Menlo,monospace}

/* Viewer overlay */
.viewer{position:fixed;inset:0;z-index:120;background:var(--bg);display:flex;flex-direction:column}
.viewer-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 20px;border-bottom:1px solid var(--line);background:var(--surface)}
.viewer-title{font-family:'Lora',serif;font-weight:600;font-size:16px;color:var(--ink);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.viewer-actions{display:flex;gap:8px;flex-shrink:0}
.viewer-body{flex:1;overflow:auto;display:flex;justify-content:center}
.viewer-body iframe{width:100%;height:100%;border:0;background:#525659}
.viewer-body img{max-width:100%;height:auto;align-self:flex-start;margin:24px}
.viewer-body .prose{max-width:780px;width:100%;padding:32px 28px 80px}

/* Prose (note reader + about) */
.prose{color:var(--ink);line-height:1.65}
.prose h1{font-size:26px;margin:0 0 14px}
.prose h2{font-size:21px;margin:26px 0 10px}
.prose h3{font-size:16px;margin:20px 0 8px;color:var(--blue)}
.prose p{margin:0 0 12px}
.prose ul,.prose ol{margin:0 0 12px 22px;display:flex;flex-direction:column;gap:5px}
.prose code{background:var(--surface-2);border:1px solid var(--line);border-radius:5px;
  padding:1px 6px;font-size:12.5px;font-family:ui-monospace,Menlo,monospace}
.prose blockquote{border-left:3px solid var(--brand-green);padding:6px 14px;margin:0 0 12px;
  background:var(--surface-2);border-radius:0 8px 8px 0;color:var(--slate)}
.prose a{color:var(--blue);font-weight:600}
.prose .small{font-size:12px}
.about{max-width:760px;margin:8px auto 0}

/* note-meta line in reader */
.note-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:12.5px;
  color:var(--slate);margin:-6px 0 18px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.note-meta .topic{color:var(--blue);font-weight:600}
.note-refs{margin-top:24px;padding-top:16px;border-top:1px solid var(--line)}
.note-refs h3{margin-top:0}
.note-refs .ref-pill{display:inline-block;font-family:ui-monospace,Menlo,monospace;font-size:11.5px;
  background:var(--surface-2);border:1px solid var(--line);padding:3px 8px;border-radius:6px;margin:0 6px 6px 0}