/* Libros Intensis — hoja de estilos única, sin dependencias.
   Tema claro/oscuro automático (prefers-color-scheme). */

:root {
  --bg: #faf8f5;
  --surface: #ffffff;
  --text: #21201c;
  --muted: #6e6a61;
  --border: #e4e0d8;
  --accent: #8a3324;
  --accent-strong: #b3402e;
  --accent-soft: #f3e4e0;
  --chip-bg: #efece6;
  --shadow: 0 1px 3px rgba(33, 32, 28, .08);
  --radius: 10px;
  --max: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17171a;
    --surface: #1f1f23;
    --text: #e8e6e1;
    --muted: #a09c93;
    --border: #33333a;
    --accent: #e0876f;
    --accent-strong: #f09a80;
    --accent-soft: #2c211d;
    --chip-bg: #2a2a30;
    --shadow: 0 1px 3px rgba(0, 0, 0, .4);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 8px 12px; z-index: 10;
}
.skip-link:focus { left: 0; }

/* ---------- encabezado ---------- */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }

.header-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding-top: 14px; padding-bottom: 6px; flex-wrap: wrap;
}

.brand { font-size: 1.35rem; font-weight: 800; color: var(--text); letter-spacing: -.02em; }
.brand:hover { color: var(--accent); text-decoration: none; }

.site-search { display: flex; gap: 8px; }
.site-search input {
  width: min(280px, 52vw); padding: 8px 10px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--bg); color: var(--text);
}
.site-search button, .search-big button {
  padding: 8px 14px; border: 0; border-radius: var(--radius);
  background: var(--accent); color: #fff; font-weight: 600; cursor: pointer;
}
.site-search button:hover, .search-big button:hover { background: var(--accent-strong); }

.main-nav { display: flex; gap: 14px; flex-wrap: wrap; padding-top: 4px; padding-bottom: 12px; }
.main-nav a { color: var(--muted); font-size: .95rem; }
.main-nav a:hover { color: var(--accent); }

/* ---------- contenido ---------- */
main.wrap { padding-top: 24px; padding-bottom: 48px; min-height: 60vh; }

.page-intro h1 { margin: 0 0 8px; font-size: 1.8rem; letter-spacing: -.02em; }
.lead { color: var(--muted); margin: 0 0 8px; font-size: 1.05rem; }
.result-count { color: var(--muted); font-size: .95rem; }
.muted { color: var(--muted); }
.empty-state { color: var(--muted); text-align: center; padding: 40px 0; }

.breadcrumbs { margin-bottom: 14px; font-size: .9rem; }
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; }
.breadcrumbs li::after { content: "›"; margin-left: 6px; color: var(--muted); }
.breadcrumbs li:last-child::after { content: none; }
.breadcrumbs li { color: var(--muted); }
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--accent); }

/* ---------- tarjetas de libro ---------- */
.book-grid {
  display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  margin-top: 20px;
}

.book-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; box-shadow: var(--shadow);
  transition: transform .12s ease, box-shadow .12s ease;
}
.book-card:hover { transform: translateY(-2px); box-shadow: 0 4px 14px rgba(33, 32, 28, .12); }

.cover-link { display: block; background: var(--chip-bg); }
.cover { display: block; width: 100%; aspect-ratio: 2 / 3; object-fit: cover; }
.cover-placeholder {
  display: flex; align-items: flex-end; padding: 14px; aspect-ratio: 2 / 3;
  font-weight: 700; color: var(--muted); line-height: 1.3;
}

.book-card-body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 4px; }
.book-card-title { margin: 0; font-size: 1.02rem; line-height: 1.35; }
.book-card-title a { color: var(--text); }
.book-card-title a:hover { color: var(--accent); }
.book-card-subtitle { margin: 0; font-size: .85rem; color: var(--muted); }
.book-card-authors { margin: 0; font-size: .88rem; color: var(--muted); }
.book-card-excerpt { margin: 4px 0 0; font-size: .88rem; color: var(--muted); }
.book-card-meta { margin: 8px 0 0; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.meta-year { color: var(--muted); font-size: .85rem; }

.chip {
  display: inline-block; background: var(--chip-bg); color: var(--muted);
  padding: 2px 10px; border-radius: 999px; font-size: .82rem;
}
.chip:hover { background: var(--accent-soft); color: var(--accent); text-decoration: none; }

/* ---------- página de libro ---------- */
.book-detail-grid { display: grid; grid-template-columns: 280px 1fr; gap: 32px; align-items: start; }

.book-media { position: sticky; top: 16px; display: flex; flex-direction: column; gap: 12px; }
.book-cover { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); }

.btn {
  display: inline-block; background: var(--accent); color: #fff; font-weight: 600;
  padding: 10px 18px; border: 0; border-radius: var(--radius); cursor: pointer; text-align: center;
}
.btn:hover { background: var(--accent-strong); color: #fff; text-decoration: none; }
.btn-affiliate { width: 100%; }
.btn-danger { background: #b3261e; }
.btn-danger:hover { background: #d33c33; }
.btn-small {
  display: inline-block; background: var(--chip-bg); color: var(--text);
  padding: 4px 10px; border: 1px solid var(--border); border-radius: 6px;
  font-size: .85rem; cursor: pointer;
}
.btn-small:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn-link { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }

.book-main h1 { margin: 0 0 6px; font-size: 1.9rem; line-height: 1.2; letter-spacing: -.02em; }
.subtitle { color: var(--muted); font-size: 1.05rem; margin: 0 0 10px; }

.byline { margin: 0 0 4px; font-size: 1rem; }
.byline a:not(:last-child)::after { content: ", "; color: var(--text); }
.roles { margin: 0 0 12px; display: flex; flex-wrap: wrap; gap: 10px; font-size: .88rem; }
.roles:empty { display: none; }
.role-tag { color: var(--muted); }

.book-lede { font-size: 1.02rem; margin: 12px 0; }

.book-facts {
  display: grid; grid-template-columns: max-content 1fr; gap: 2px 16px;
  margin: 16px 0; padding: 14px 16px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); font-size: .92rem;
}
.book-facts dt { color: var(--muted); }
.book-facts dd { margin: 0; }

.chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0 0; }
.publishers { display: flex; gap: 12px; flex-wrap: wrap; margin: 8px 0 0; font-size: .9rem; color: var(--muted); }

.gallery { margin: 28px 0 0; }
.gallery figure { margin: 0 0 12px; }
.gallery img { border-radius: var(--radius); border: 1px solid var(--border); }

.book-summary { margin-top: 32px; }
.book-summary h2, .related h2 { font-size: 1.4rem; border-bottom: 2px solid var(--border); padding-bottom: 6px; }

.markdown-body { font-size: 1.02rem; }
.markdown-body h2 { font-size: 1.3rem; margin: 26px 0 10px; }
.markdown-body h3 { font-size: 1.1rem; margin: 20px 0 8px; }
.markdown-body ul, .markdown-body ol { padding-left: 22px; }
.markdown-body li { margin: 4px 0; }
.markdown-body blockquote {
  margin: 14px 0; padding: 8px 16px; border-left: 3px solid var(--accent);
  background: var(--surface); color: var(--muted);
}
.markdown-body code { background: var(--chip-bg); padding: 1px 5px; border-radius: 4px; font-size: .9em; }
.markdown-body strong { color: var(--accent); }

.related { margin-top: 40px; }

/* ---------- taxonomías ---------- */
.tax-grid { list-style: none; margin: 20px 0 0; padding: 0; display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.tax-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); }
.tax-card h2 { margin: 0 0 6px; font-size: 1.15rem; }
.tax-card h2 a { color: var(--text); }
.tax-card h2 a:hover { color: var(--accent); }
.tax-card p { margin: 0 0 8px; color: var(--muted); font-size: .92rem; }
.tax-card .count { font-size: .85rem; color: var(--accent); font-weight: 600; }

/* ---------- buscador ---------- */
.search-big { display: flex; gap: 8px; max-width: 560px; margin-top: 10px; }
.search-big input {
  flex: 1; padding: 10px 14px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--surface); color: var(--text); font-size: 1rem;
}

/* ---------- paginación ---------- */
.pagination { display: flex; align-items: center; justify-content: center; gap: 16px; margin: 32px 0 8px; flex-wrap: wrap; }
.page-btn { padding: 8px 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.page-btn:hover { border-color: var(--accent); }
.page-info { color: var(--muted); font-size: .92rem; }

/* ---------- anuncios ---------- */
.ad { margin: 20px 0; min-height: 1px; }

/* ---------- errores ---------- */
.error-page { text-align: center; padding: 48px 0; }
.error-code { font-size: 4rem; font-weight: 800; color: var(--accent); margin: 0; line-height: 1; }
.error-page h1 { margin: 8px 0 12px; }
.error-page ul { list-style: none; padding: 0; display: inline-block; text-align: left; }
.error-page li { margin: 4px 0; }

/* ---------- pie ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); margin-top: 48px; }
.footer-row { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 18px 16px; color: var(--muted); font-size: .9rem; }
.footer-row p { margin: 0; }
.footer-row nav { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-row a { color: var(--muted); }
.footer-row a:hover { color: var(--accent); }

/* ---------- panel de administración ---------- */
.admin-login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; width: min(380px, 92vw); box-shadow: var(--shadow);
}
.login-box h1 { margin: 0 0 2px; font-size: 1.4rem; }
.login-box form { display: flex; flex-direction: column; gap: 14px; margin-top: 16px; }
.login-box label { display: flex; flex-direction: column; gap: 4px; font-size: .92rem; }

.admin-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.admin-header .header-row { padding-top: 12px; padding-bottom: 12px; }
.admin-header nav { display: flex; gap: 14px; flex-wrap: wrap; }
.admin-header nav a { color: var(--muted); }
.admin-header nav a:hover { color: var(--accent); }
.logout-form { margin: 0; }

.admin-main { padding-top: 24px; padding-bottom: 56px; }

.stat-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); margin: 18px 0 28px; }
.stat-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; text-align: center; box-shadow: var(--shadow); color: var(--text);
}
.stat-card:hover { border-color: var(--accent); text-decoration: none; }
.stat-num { display: block; font-size: 1.9rem; font-weight: 800; color: var(--accent); }
.stat-label { color: var(--muted); font-size: .9rem; }

.admin-panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 24px; }
.admin-panel h2 { margin-top: 0; font-size: 1.15rem; }

.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap; }
.tabs { display: flex; gap: 10px; align-items: center; margin: 0 0 14px; flex-wrap: wrap; }
.tab { padding: 6px 14px; border-radius: 999px; background: var(--chip-bg); color: var(--muted); }
.tab.active { background: var(--accent); color: #fff; }
.admin-search { display: flex; gap: 8px; margin-bottom: 14px; }
.admin-search input { padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--text); }

.admin-table { width: 100%; border-collapse: collapse; font-size: .93rem; }
.admin-table th, .admin-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
.admin-table th { color: var(--muted); font-weight: 600; }
.admin-table code { font-size: .82em; color: var(--muted); }
.actions { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
form.inline { display: inline; }
.badge { background: var(--chip-bg); padding: 2px 8px; border-radius: 999px; font-size: .8rem; }

.admin-form { display: flex; flex-direction: column; gap: 14px; max-width: 860px; }
.admin-form.compact { max-width: 480px; }
.admin-form fieldset { border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px 18px; display: flex; flex-direction: column; gap: 12px; }
.admin-form legend { font-weight: 700; padding: 0 6px; }
.admin-form label { display: flex; flex-direction: column; gap: 4px; font-size: .92rem; }
.admin-form input[type=text], .admin-form input[type=url], .admin-form input[type=number],
.admin-form input[type=date], .admin-form select, .admin-form textarea {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--bg); color: var(--text); font: inherit; width: 100%;
}
.admin-form textarea.mono-ish { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .88rem; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.label-plain { margin: 0; font-size: .92rem; font-weight: 600; }
.check-grid { display: flex; flex-wrap: wrap; gap: 10px 18px; }
.check-inline { flex-direction: row !important; align-items: center; gap: 6px !important; }

.form-rows { display: flex; flex-direction: column; gap: 8px; }
.form-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.form-row select { width: auto; min-width: 140px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--text); }
.form-row input[type=url], .form-row input[type=text] { flex: 1; min-width: 200px; width: auto; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--text); }
.btn-remove { border: 0; background: none; color: var(--muted); cursor: pointer; font-size: 1rem; padding: 4px; }
.btn-remove:hover { color: #b3261e; }

.form-actions { display: flex; gap: 14px; align-items: center; margin-top: 6px; flex-wrap: wrap; }
.spacer { flex: 1; }

.alert { padding: 10px 14px; border-radius: var(--radius); margin: 0 0 16px; font-size: .94rem; }
.alert-ok { background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent); }
.alert-error { background: #fdecea; color: #b3261e; border: 1px solid #b3261e; }
@media (prefers-color-scheme: dark) {
  .alert-error { background: #2c1c1a; color: #f2a29b; border-color: #7c2b22; }
}

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  .book-detail-grid { grid-template-columns: 1fr; }
  .book-media { position: static; max-width: 260px; }
  .header-row { flex-direction: column; align-items: stretch; }
  .site-search input { width: 100%; }
  .book-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; }
  .book-main h1 { font-size: 1.5rem; }
}