/* Biblioteca Italiana — carta, inchiostro e terracotta */
:root {
  --paper: #f6f1e7;
  --paper-2: #efe7d7;
  --card: #fffdf8;
  --ink: #1f2a2e;
  --ink-2: #4a5559;
  --line: #ddd2bd;
  --accent: #a63d2f;
  --accent-ink: #fff;
  --green: #5b7a5e;
  --ochre: #b8862a;
  --t1: #4f8a5b; --t2: #2f8a86; --t3: #2f6f9f; --t4: #5a58a6;
  --t5: #b8862a; --t6: #b5532f; --t7: #8a2f4a;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(31, 42, 46, .06), 0 4px 16px rgba(31, 42, 46, .05);
  --serif: "Fraunces", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #171c1e; --paper-2: #1e2528; --card: #222a2d; --ink: #ece6da; --ink-2: #b4ada1;
    --line: #36403f; --accent: #e07a5f; --accent-ink: #1a1a1a; --green: #8fb293;
    --t1: #7cc08a; --t2: #5cc2bd; --t3: #6aa8d8; --t4: #9b98e0; --t5: #e0b45a; --t6: #e88a63; --t7: #d77a96;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
img, svg { max-width: 100%; }
p, li, td, th, h1, h2, h3 { overflow-wrap: break-word; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--ochre); outline-offset: 2px; border-radius: 6px; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.2; font-weight: 600; letter-spacing: -.01em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); margin: .2em 0 .3em; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin: 1.6em 0 .5em; }
h3 { font-size: 1.2rem; margin: 0 0 .25em; }
.wrap { max-width: 1120px; margin: 0 auto; padding-inline: 20px; }
.narrow { max-width: 760px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px; z-index: 10; }
.skip:focus { left: 8px; }

/* cabeçalho */
.site-header { border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--paper) 92%, transparent); position: sticky; top: calc(-1 * var(--eco, 0px)); z-index: 5; backdrop-filter: blur(8px); }
.site-header .wrap { display: flex; align-items: center; gap: 18px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-family: var(--serif); font-weight: 600; font-size: 1.15rem; }
.brand img { width: 34px; height: 34px; }
.brand small { display: block; font-family: var(--sans); font-weight: 400; font-size: .72rem; color: var(--ink-2); letter-spacing: .04em; }
.nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--ink); text-decoration: none; padding: 6px 12px; border-radius: 999px; font-size: .95rem; }
.nav a:hover { background: var(--paper-2); }
.nav a[aria-current="page"] { background: var(--ink); color: var(--paper); }
.nav-toggle, .filters-toggle { display: none; }
/* ligação com o portal das bibliotecas */
.eco { max-width: 1120px; margin: 0 auto; padding: 6px 20px 0; font-size: .8rem; line-height: 1.4; }
.eco a { display: inline-block; padding: 4px 0; color: var(--ink-2); text-decoration: none; }
.eco a:hover { color: var(--accent); text-decoration: underline; }

/* hero */
.hero { padding: 56px 0 28px; }
.hero .kicker { font-family: var(--serif); font-style: italic; color: var(--accent); font-size: 1.15rem; margin: 0; }
.hero p.lead { font-size: 1.2rem; color: var(--ink-2); max-width: 640px; }
.stats { display: flex; gap: 28px; flex-wrap: wrap; margin: 26px 0 8px; padding: 0; list-style: none; }
.stats li { font-size: .92rem; color: var(--ink-2); }
.stats b { display: block; font-family: var(--serif); font-size: 1.9rem; color: var(--ink); line-height: 1.1; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 999px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper); text-decoration: none; font: 600 .95rem var(--sans); cursor: pointer; }
.btn:hover { filter: brightness(1.15); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.accent { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.small { padding: 6px 12px; font-size: .85rem; }

/* tappe (o percurso) */
.tappe { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(240px, 100%), 1fr)); gap: 14px; margin: 18px 0; }
.tappa { position: relative; display: block; padding: 18px 18px 16px 22px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--ink); box-shadow: var(--shadow); overflow: hidden; transition: transform .15s; }
.tappa::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 6px; background: var(--c); }
.tappa:hover { transform: translateY(-2px); }
.tappa .num { font: 600 .78rem var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--c); }
.tappa h3 { font-size: 1.25rem; margin: 2px 0 2px; font-style: italic; }
.tappa .lvl { font-size: .88rem; font-weight: 600; }
.tappa p { margin: .4em 0 0; font-size: .93rem; color: var(--ink-2); }
.tappa .count { margin-top: 10px; font-size: .85rem; color: var(--ink-2); }
.c1 { --c: var(--t1); } .c2 { --c: var(--t2); } .c3 { --c: var(--t3); } .c4 { --c: var(--t4); }
.c5 { --c: var(--t5); } .c6 { --c: var(--t6); } .c7 { --c: var(--t7); }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr)); gap: 18px; counter-reset: s; padding: 0; list-style: none; }
.steps li { background: var(--paper-2); border-radius: var(--radius); padding: 18px; }
.steps li::before { counter-increment: s; content: counter(s); display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-weight: 700; margin-bottom: 8px; }
.downloads { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr)); gap: 16px; }
.dl { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.dl h3 { margin-bottom: .3em; }
.dl p { margin: 0 0 14px; color: var(--ink-2); font-size: .95rem; }
.note { background: var(--paper-2); border-left: 4px solid var(--green); padding: 14px 18px; border-radius: 0 10px 10px 0; font-size: .95rem; }
.note.warn { border-color: var(--ochre); }

/* catálogo */
.filters { position: sticky; top: var(--topo, 64px); z-index: 4; background: var(--paper); padding: 14px 0 10px; border-bottom: 1px solid var(--line); }
.search { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.search input[type=search] { flex: 1 1 260px; padding: 11px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink); font: inherit; }
.search select { padding: 10px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink); font: inherit; font-size: .92rem; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
.chip-btn { border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: 5px 12px; border-radius: 999px; font: 500 .86rem var(--sans); cursor: pointer; }
.chip-btn[aria-pressed="true"] { background: var(--c, var(--ink)); border-color: var(--c, var(--ink)); color: var(--paper); }
.toggles { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; font-size: .9rem; color: var(--ink-2); align-items: center; }
.toggles label { display: inline-flex; gap: 6px; align-items: center; cursor: pointer; }
.result-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin: 14px 0; color: var(--ink-2); font-size: .92rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr)); gap: 14px; padding-bottom: 40px; }
.obra { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 16px 14px; display: flex; flex-direction: column; gap: 6px; box-shadow: var(--shadow); }
.obra.flash { outline: 3px solid var(--ochre); }
.obra .top { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.tag { display: inline-flex; align-items: center; gap: 4px; font-size: .76rem; font-weight: 600; padding: 2px 9px; border-radius: 999px; background: var(--paper-2); color: var(--ink-2); }
.tag.t { background: var(--c); color: var(--paper); }
.tag.audio { color: var(--green); }
.tag.dl-tag { color: var(--accent); }
.obra h3 { margin-top: 2px; }
.obra .autor { margin: 0; color: var(--ink-2); font-size: .93rem; }
.obra .meta { margin: 0; font-size: .85rem; color: var(--ink-2); }
.obra .acts { display: flex; gap: 8px; flex-wrap: wrap; margin-top: auto; padding-top: 8px; align-items: center; }
.mark { border: 1px solid var(--line); background: transparent; color: var(--ink-2); border-radius: 999px; padding: 5px 10px; font: 500 .82rem var(--sans); cursor: pointer; }
.mark[aria-pressed="true"] { background: var(--green); border-color: var(--green); color: var(--paper); }
.mark.want[aria-pressed="true"] { background: var(--ochre); border-color: var(--ochre); }
.empty { text-align: center; padding: 40px; color: var(--ink-2); }
.verify { font-size: .8rem; color: var(--ochre); margin: 0; }

/* plano / texto longo */
.prose h2 { border-top: 1px solid var(--line); padding-top: 1.1em; }
.prose table { width: 100%; border-collapse: collapse; font-size: .93rem; margin: 10px 0 18px; }
.prose th, .prose td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-2); }
.table-scroll { overflow-x: auto; }
.tappa-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.tappa-head .tag { font-size: .85rem; }
.box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin: 14px 0; }
.two { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); gap: 14px; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 8px 0; }
summary { cursor: pointer; font-weight: 600; }

footer.site-footer { border-top: 1px solid var(--line); margin-top: 48px; padding: 28px 0 40px; color: var(--ink-2); font-size: .9rem; }
footer .wrap { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
footer p { margin: .3em 0; }

/* telas baixas (celular deitado): cabeçalho e filtros fixos cobririam toda a tela */
@media (max-height: 600px) { .site-header, .filters { position: static; } }

/* toque: sem efeito de hover preso e sem animação de elevação */
@media (hover: none) { .tappa:hover { transform: none; } }

/* telas estreitas: menu em lista, filtros fora do fluxo fixo, alvos de toque de 40 px ou mais */
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding-inline: 16px; }
  .eco { padding: 4px 16px 0; }
  .eco a { padding: 8px 0 2px; }
  .site-header { position: static; backdrop-filter: none; }
  .site-header .wrap { gap: 10px; min-height: 60px; }
  .brand { flex: 1; min-width: 0; font-size: 1.05rem; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; min-width: 44px; padding: 0 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); color: var(--ink); font: 600 .95rem var(--sans); cursor: pointer; }
  .nav-toggle[aria-expanded="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
  .nav { width: 100%; margin: 0 0 10px; flex-direction: column; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); overflow: hidden; }
  .nav.closed { display: none; }
  .nav a { display: block; padding: 13px 16px; min-height: 48px; border-radius: 0; border-top: 1px solid var(--line); font-size: 1rem; }
  .nav a:first-child { border-top: 0; }
  .nav a:hover { background: var(--paper-2); }
  .nav a[aria-current="page"] { background: var(--paper-2); color: var(--ink); font-weight: 600; box-shadow: inset 4px 0 var(--accent); }
  .hero { padding-top: 32px; }
  .stats { gap: 18px 24px; }
  .btn { min-height: 44px; }
  .btn.small, .mark { min-height: 40px; padding: 8px 14px; }
  .filters { position: static; padding: 12px 0 10px; }
  .search input[type=search] { flex: 1 1 100%; min-height: 44px; }
  .search select { flex: 1 1 40%; min-height: 44px; }
  .filters-toggle { display: inline-flex; align-items: center; justify-content: center; width: 100%; min-height: 44px; margin-top: 10px; padding: 0 14px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--ink); font: 600 .92rem var(--sans); cursor: pointer; }
  .filters-toggle[aria-expanded="true"] { background: var(--paper-2); }
  .filters-more.closed { display: none; }
  .chip-btn { min-height: 40px; padding: 8px 14px; }
  .toggles { gap: 8px 16px; }
  .toggles label { min-height: 40px; }
  .toggles input[type=checkbox] { width: 20px; height: 20px; margin: 0; }
  .result-bar { align-items: flex-start; }
  .result-bar > span:last-child { display: flex; gap: 8px; flex-wrap: wrap; }
  .obra .acts { gap: 8px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }