:root {
  --amber: #854F0B;
  --amber-light: #BA7517;
  --text-main: #2C2C2A;
  --text-secondary: #5F5E5A;
  --bg-main: #F5F2EA;
  --bg-soft: #FAEEDA;
  --bg-card: #FFFFFF;
  --border: #E5E2D9;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, sans-serif;
  background-color: #c8b99a;
  background-image: url('/biblioteca/ms-bach.png');
  background-size: cover;
  background-attachment: fixed;
  background-position: center top;
  color: var(--text-main);
}

a { color: inherit; }

.wrapper {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 20px 70px;
  background: rgba(245, 242, 234, 0.94);
  box-shadow: 0 0 80px rgba(0,0,0,0.20);
  min-height: 100vh;
}

/* ── Header estilo Mercado ───────────────────────────────────────────────── */
.bib-sticky-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: transparent;
}

.bib-topbar-utility {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 10px 20px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.bib-back-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color .2s;
}
.bib-back-link:hover { color: var(--amber); }
.bib-back-link svg { flex-shrink: 0; }

.bib-topbar-info { display: none; }
@media (min-width: 768px) { .bib-topbar-info { display: block; } }

.bib-header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: #ffffff;
}

.logo {
  text-decoration: none;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 13px;
  color: var(--text-secondary);
}

.nav a { text-decoration: none; }
.nav a:hover { color: var(--amber); }

.hero { margin-bottom: 26px; padding-top: 28px; }

.hero h1 {
  font-family: "EB Garamond", serif;
  font-weight: 500;
  font-size: 42px;
  line-height: 1.05;
  margin: 0 0 8px;
}

.hero p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.tools {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 18px;
  margin-bottom: 28px;
}

.search-row {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.search-row input {
  flex: 1;
  height: 42px;
  border: 1px solid var(--border);
  padding: 0 13px;
  font-family: Inter, sans-serif;
  font-size: 14px;
}

.btn {
  border: 0;
  background: var(--amber);
  color: white;
  padding: 0 15px;
  height: 42px;
  font-family: Inter, sans-serif;
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.btn:hover { background: var(--amber-light); }

.filter-block {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 12px;
}

.sort-block { margin-top: 6px; border-top: 1px solid var(--border); padding-top: 10px; }
.sort-label { font-size: 12px; color: var(--text-secondary); display: flex; align-items: center; }

.chip:hover,
.chip.active {
  color: #fff;
  background: var(--amber);
  border-color: var(--amber);
}

.section-title {
  font-family: "EB Garamond", serif;
  font-size: 28px;
  font-weight: 500;
  margin: 34px 0 14px;
}

.count {
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 14px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  min-height: 285px;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.card:hover,
.card:focus {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(44,44,42,.08);
  border-color: #D8C7AA;
  outline: none;
}

.thumb {
  aspect-ratio: 1 / 1;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.pdf-icon,
.file-placeholder span {
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--amber);
  border: 1px solid var(--amber);
  padding: 10px 13px;
}

.file-placeholder {
  width: 100%;
  height: 100%;
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-placeholder .zip {
  color: #5e35b1;
  border-color: #5e35b1;
}

.file-placeholder .file {
  color: var(--text-secondary);
  border-color: var(--text-secondary);
}

.card-body {
  padding: 13px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-family: "EB Garamond", serif;
  font-size: 19px;
  line-height: 1.1;
  margin-bottom: 8px;
}

.card-composer {
  font-size: 12px;
  color: var(--text-main);
  font-style: italic;
  margin-bottom: 4px;
}

.card-meta {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.badge {
  display: inline-block;
  width: fit-content;
  font-size: 11px;
  color: var(--amber);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 3px 7px;
  margin-bottom: 8px;
}

.badge.free { color: var(--text-secondary); }

.card-actions { margin-top: auto; }

.download {
  display: inline-flex;
  align-items: center;
  background: var(--amber);
  color: #fff;
  text-decoration: none;
  font-size: 12px;
  padding: 8px 10px;
}

.download:hover { background: var(--amber-light); }

.admin-link {
  margin-top: 22px;
  display: inline-flex;
  font-size: 12px;
  color: var(--text-secondary);
}

.empty {
  background: #fff;
  border: 1px solid var(--border);
  padding: 24px;
  color: var(--text-secondary);
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
}

.modal.is-open { display: block; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(44,44,42,.42);
}

.modal-panel {
  position: relative;
  width: min(920px, calc(100% - 32px));
  max-height: calc(100vh - 130px);
  overflow: auto;
  margin: 125px auto 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: grid;
  grid-template-columns: 360px 1fr;
  box-shadow: 0 24px 60px rgba(0,0,0,.18);
}

.modal-cover {
  background: var(--bg-soft);
  min-height: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--border);
}

.modal-cover img {
  width: 100%;
  height: 100%;
  min-height: 460px;
  object-fit: cover;
  display: block;
}

.modal-content {
  padding: 26px;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-main);
  width: 34px;
  height: 34px;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
}

.modal-title {
  font-family: "EB Garamond", serif;
  font-size: 34px;
  line-height: 1.05;
  font-weight: 500;
  margin: 24px 40px 12px 0;
}

.modal-meta {
  display: grid;
  gap: 9px;
  margin: 18px 0 22px;
  color: var(--text-secondary);
  font-size: 13px;
}

.modal-meta strong {
  color: var(--text-main);
  font-weight: 500;
}

.modal-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.modal-download {
  display: inline-flex;
  align-items: center;
  background: var(--amber);
  color: #fff;
  text-decoration: none;
  font-size: 13px;
  padding: 11px 14px;
}

.modal-download:hover { background: var(--amber-light); }

.modal-share {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-secondary);
  font-size: 13px;
  padding: 11px 14px;
  cursor: pointer;
  font-family: Inter, sans-serif;
}
.modal-share:hover { border-color: var(--amber); color: var(--amber); }
.modal-share.copied { border-color: #4caf50; color: #4caf50; }

.modal-note {
  color: var(--text-secondary);
  font-size: 12px;
  margin-top: 16px;
  line-height: 1.5;
}

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .modal-panel { grid-template-columns: 1fr; }
  .modal-cover { min-height: 320px; border-right: 0; border-bottom: 1px solid var(--border); }
  .modal-cover img { min-height: 320px; }
}

@media (max-width: 680px) {
  .topbar {
    flex-direction: row;
    align-items: center;
  }
  .search-row {
    flex-direction: column;
    align-items: stretch;
  }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero h1 { font-size: 28px; }
  .wrapper { padding: 0 12px 70px; }
  .topbar { margin-left: -12px; margin-right: -12px; padding: 10px 12px; }
}

@media (max-width: 768px) {
  .thumb {
    aspect-ratio: unset;
    height: 160px;
    overflow: hidden;
  }
  .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
  }
}
/* ── Paginación ──────────────────────────────────────────────────────────── */
.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 28px 0 14px;
  align-items: center;
  border-bottom: 2px solid var(--text-secondary);
  padding-bottom: 28px;
}


.page-link {
  display: inline-flex;
  align-items: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  justify-content: center;
}

.page-link:hover,
.page-link.active {
  background: var(--amber);
  border-color: var(--amber);
  color: #fff;
}

.page-ellipsis {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 6px;
  color: var(--text-secondary);
  font-size: 13px;
}  

/* ── Scroll to top ───────────────────────────────────────────────────────── */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--amber);
  color: #fff;
  border: none;
  padding: 10px 14px;
  font-family: Inter, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s, background .2s;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.scroll-top:hover { background: var(--amber-light); }