/* ===========================
   MARKETING ESSENCIAL — Biblioteca Digital Acadêmica
   Conceito: fichário de biblioteca + carimbo de catálogo,
   aplicado a um acervo de marketing.
   =========================== */

:root {
  --ink:      #1E2420;   /* tinta quase-preta, base de texto/cabeçalho */
  --ink-soft: #4B534C;   /* tinta mais suave para texto corrido */
  --paper:    #EFEEE4;   /* parede da biblioteca (fundo da página) */
  --card:     #FBFAF3;   /* papel da ficha (fundo dos cartões) */
  --kraft:    #B08D57;   /* pasta manila / etiqueta */
  --kraft-soft: #E4D9BE; /* trilho da pasta, bordas suaves */
  --stamp:    #2461C7;   /* tinta de carimbo — azul da logo */
  --stamp-dark: #17469A;
  --rubric:   #A6402B;   /* tinta de carimbo secundária (vencimento/alerta) */
  --gold:     #C8971F;   /* estrelas de avaliação */

  --font-display: 'Archivo Black', 'Arial Black', sans-serif;
  --font-body: 'Lora', Georgia, 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Courier New', monospace;

  --radius: 6px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--paper), var(--paper)),
    repeating-linear-gradient(0deg, rgba(30,36,32,0.025) 0px, rgba(30,36,32,0.025) 1px, transparent 1px, transparent 28px);
  color: var(--ink-soft);
  line-height: 1.6;
}

h1, h2, h3 { font-family: var(--font-display); color: var(--ink); }

a { color: var(--stamp); }

::selection { background: var(--stamp); color: var(--card); }

:focus-visible {
  outline: 3px solid var(--stamp);
  outline-offset: 2px;
}

/* ===========================
   TOPO / HEADER / NAV
   =========================== */
.header {
  background-color: var(--ink);
  color: var(--paper);
  padding: 1.25rem 1rem;
  text-align: center;
  border-bottom: 3px solid var(--stamp);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-bar {
  max-width: 1200px;
  margin: 0 auto .85rem;
  padding: 0 1rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 10px;
}

.header-center { text-align: center; }

.header-title {
  font-size: 1.7rem;
  margin: 0;
  letter-spacing: .01em;
  text-transform: uppercase;
  line-height: 1.15;
  color: var(--paper);
}

.header-subtitle {
  display: inline-block;
  margin-top: .55rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--stamp);
  color: var(--card);
  padding: .3rem .65rem;
  border-radius: 2px;
  transform: rotate(-1.5deg);
}

.header-spacer { min-width: 40px; height: 40px; }

/* Navegação (desktop) */
.main-nav {
  max-width: 1200px;
  margin: 0 auto .75rem;
  padding: 0 1rem;
  display: flex;
  justify-content: center;
  gap: .5rem;
}

.nav-button {
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--paper);
  text-decoration: none;
  padding: .5rem .9rem;
  border-radius: 3px;
  border-bottom: 2px solid transparent;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}
.nav-button:hover { border-color: rgba(255,255,255,.4); }
.nav-button.active {
  background-color: var(--stamp);
  border-color: var(--stamp);
  color: #fff;
}

/* Hambúrguer (mobile) */
.hamburger {
  justify-self: end;
  display: none;
  width: 40px; height: 40px;
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  position: relative;
}
.hamburger:hover { background: rgba(255,255,255,0.08); }
.hamburger span {
  position: absolute;
  left: 50%;
  width: 20px; height: 2px;
  background: var(--paper);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: transform .25s ease, opacity .25s ease, top .25s ease;
}
.hamburger span:nth-child(1) { top: 13px; }
.hamburger span:nth-child(2) { top: 19px; }
.hamburger span:nth-child(3) { top: 25px; }
.hamburger.active span:nth-child(1) { top: 19px; transform: translateX(-50%) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { top: 19px; transform: translateX(-50%) rotate(-45deg); }

/* ===========================
   BUSCA / FILTROS
   =========================== */
.search-and-filter-container {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
  gap: .75rem;
  padding: .65rem .85rem;
  background-color: var(--card);
  border: 1px dashed var(--kraft);
  border-radius: var(--radius);
}
.search-box { display: flex; gap: .4rem; align-items: center; }
#searchInput {
  padding: .5rem .65rem;
  border: 1px solid var(--kraft-soft);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: .88rem;
  width: 200px;
  background: #fff;
  color: var(--ink);
}
#searchInput:focus { border-color: var(--stamp); }

#searchButton {
  padding: .5rem .9rem;
  background-color: var(--stamp);
  color: #fff;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .82rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  transition: background-color .2s ease;
}
#searchButton:hover { background-color: var(--stamp-dark); }

.filter-options {
  display: flex; align-items: center; gap: .4rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: var(--ink);
}
#filterSelect {
  padding: .5rem .6rem;
  border: 1px solid var(--kraft-soft);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: .82rem;
  background-color: #fff;
  color: var(--ink);
  cursor: pointer;
}

/* ===========================
   CONTEÚDO / CARDS
   =========================== */
.main-content { padding: 1.5rem; max-width: 1200px; margin: 0 auto; }

.section-title-container { text-align: center; padding: 2rem 1rem 0; }
.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--kraft);
  margin-bottom: .4rem;
}
.section-title {
  font-size: 1.6rem;
  display: inline-block;
  position: relative;
  padding-bottom: .5rem;
}
.section-title::after {
  content: "";
  display: block;
  width: 64px; height: 3px;
  background: var(--stamp);
  margin: .5rem auto 0;
}

.cards-container {
  counter-reset: catalog;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.75rem 1.5rem;
  justify-items: center;
  padding-top: 1.75rem;
}

.card {
  counter-increment: catalog;
  position: relative;
  background-color: var(--card);
  border: 1px solid var(--kraft-soft);
  border-radius: var(--radius);
  box-shadow: 0 2px 0 var(--kraft-soft);
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease;
  display: flex; flex-direction: column; width: 100%;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 0 var(--kraft-soft), 0 14px 24px rgba(30,36,32,.14);
}

.card::before {
  content: "N\00BA " counter(catalog, decimal-leading-zero);
  position: absolute;
  top: 14px; left: -6px;
  background: var(--stamp);
  color: #fff;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .05em;
  padding: .3rem .55rem;
  border-radius: 2px;
  transform: rotate(-4deg);
  box-shadow: 0 3px 6px rgba(0,0,0,.25);
  z-index: 2;
  pointer-events: none;
}

.card-image {
  width: 100%; height: 300px;
  object-fit: contain;
  background-color: var(--paper);
  border-bottom: 1px solid var(--kraft-soft);
}

.card-content { padding: 1.25rem; display: flex; flex-direction: column; flex-grow: 1; }
.card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.35;
  margin-bottom: .55rem;
  color: var(--ink);
}

/* Avaliação */
.card-rating {
  display: flex; align-items: center; gap: .45rem;
  margin: .1rem 0 .8rem; min-height: 1.1rem;
}
.stars {
  position: relative; display: inline-block;
  font-family: 'Segoe UI Symbol','Apple Color Emoji','Noto Color Emoji', sans-serif;
  font-size: 1.05rem; line-height: 1; letter-spacing: 1px;
}
.stars::before { content: '\2606\2606\2606\2606\2606'; color: #c9c3b4; }
.stars::after {
  content: '\2605\2605\2605\2605\2605'; position: absolute; left: 0; top: 0;
  width: var(--rating-pct, 0%); overflow: hidden; color: var(--gold); white-space: nowrap;
}
.rating-count { font-family: var(--font-mono); font-size: .78rem; color: var(--ink-soft); }

.card-description {
  font-size: .95rem;
  color: var(--ink-soft);
  margin-bottom: 1.1rem;
  flex-grow: 1;
}
.card-button {
  display: inline-block; width: 100%; padding: .7rem 1.1rem;
  background-color: var(--stamp); color: #fff; text-decoration: none;
  text-align: center; border-radius: 3px;
  font-family: var(--font-mono); font-weight: 700; font-size: .82rem;
  letter-spacing: .06em; text-transform: uppercase;
  transition: background-color .2s ease, transform .2s ease;
  border: none; cursor: pointer;
}
.card-button:hover { background-color: var(--stamp-dark); transform: rotate(-.5deg); }
.no-results {
  text-align: center; color: var(--ink-soft); font-family: var(--font-mono);
  font-size: .95rem; padding: 2rem 0; grid-column: 1 / -1;
}

/* ===========================
   PÁGINA SOBRE
   =========================== */
.about-container {
  max-width: 800px; margin: 2rem auto; padding: 2.25rem;
  background-color: var(--card);
  border: 1px solid var(--kraft-soft);
  border-left: 6px solid var(--kraft);
  border-radius: var(--radius);
  box-shadow: 0 2px 0 var(--kraft-soft);
}
.about-title {
  font-size: 1.5rem; margin-bottom: 1rem;
  position: relative; display: inline-block; padding-bottom: .5rem;
}
.about-title::after {
  content: ""; display: block; width: 56px; height: 3px;
  background: var(--stamp); margin-top: .5rem;
}
.about-text { font-size: 1.02rem; line-height: 1.85; color: var(--ink-soft); margin-bottom: 1.5rem; text-align: left; }
.about-text li {
  list-style: none;
  font-family: var(--font-mono);
  font-size: .95rem;
  padding: .5rem 0 .5rem 1.4rem;
  border-bottom: 1px dashed var(--kraft-soft);
  position: relative;
}
.about-text li::before {
  content: "\00BB";
  position: absolute; left: 0; color: var(--stamp); font-weight: 700;
}
.about-text li:last-child { border-bottom: none; }

/* ===========================
   LEITOR DE PDF
   =========================== */
.pdf-title-container { max-width: 900px; margin: 1rem auto .5rem; padding: 0 1rem; }
.pdf-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  text-align: center; line-height: 1.3; margin: 0 auto; position: relative;
}
.pdf-title::after {
  content: ""; display: block; width: 64px; height: 3px; background: var(--stamp);
  border-radius: 2px; margin: .6rem auto 0;
}
.pdf-container { padding: .75rem 1.5rem 1.5rem; max-width: 900px; margin: 0 auto; }
#pdf-viewer {
  width: 100%; height: 78vh;
  border: 1px solid var(--kraft-soft);
  border-radius: var(--radius);
  background: var(--card);
}

/* ===========================
   FORMULÁRIO: PEDIR CONTEÚDO
   =========================== */
.form-container {
  max-width: 720px; margin: 2rem auto; padding: 2.25rem;
  background: var(--card);
  border: 1px dashed var(--kraft);
  border-radius: var(--radius);
  box-shadow: 0 2px 0 var(--kraft-soft);
}
.form-eyebrow {
  display: block; text-align: center;
  font-family: var(--font-mono); font-size: .74rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase; color: var(--kraft);
  margin-bottom: .5rem;
}
.form-title { font-size: 1.4rem; margin-bottom: 1.5rem; text-align: center; }
.request-form { display: grid; gap: 1.1rem; }
.form-group { display: grid; gap: .4rem; }
.form-group label {
  font-family: var(--font-mono); font-size: .78rem; font-weight: 700;
  letter-spacing: .06em; text-transform: uppercase; color: var(--ink);
}

.request-form input,
.request-form textarea,
.form-group input,
.form-group textarea {
  -webkit-appearance: none; appearance: none; width: 100%;
  padding: .6rem .1rem; border: none; border-bottom: 2px solid var(--kraft-soft);
  border-radius: 0; font-family: var(--font-body); font-size: 1rem;
  background: transparent; color: var(--ink); box-sizing: border-box;
}
.request-form textarea { border: 1px solid var(--kraft-soft); border-radius: 3px; padding: .7rem .85rem; }
.request-form input:focus,
.request-form textarea:focus,
.form-group input:focus,
.form-group textarea:focus {
  outline: none; border-color: var(--stamp);
}
.request-form ::placeholder { color: #9a9587; opacity: 1; }

/* Feedback do formulário */
.form-alert {
  margin-top: 1rem; padding: .75rem 1rem; border-radius: 3px;
  font-family: var(--font-mono); font-size: .88rem; font-weight: 700;
  border: 1px solid transparent; text-align: center; display: none;
}
.form-alert.success { display: block; background: #e8f0e4; color: #33502a; border-color: #c7d9bc; }
.form-alert.error { display: block; background: #f7e6e2; color: var(--rubric); border-color: #e6c3ba; }

/* ===========================
   RODAPÉ
   =========================== */
.site-footer {
  background: var(--ink);
  color: var(--paper);
  border-top: 3px solid var(--stamp);
  margin-top: 2.5rem;
  padding: 1.75rem 1rem;
  text-align: center;
}
.footer-inner { max-width: 1200px; margin: 0 auto; display: grid; gap: .35rem; }
.footer-brand {
  font-family: var(--font-display); font-size: 1rem; letter-spacing: .02em; text-transform: uppercase;
}
.footer-tag {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .04em;
  color: rgba(239,238,228,.7);
}

/* ===========================
   MOBILE
   =========================== */
@media (max-width: 768px) {
  .header { padding: 1.25rem 1rem; }
  .header-bar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto .9rem;
    padding: 0 1rem;
  }
  .header-spacer { display: none; }
  .header-center { padding: 0 52px; text-align: center; }
  .header-title { font-size: 1.3rem; }
  .header-subtitle { display: none; }

  .hamburger {
    display: inline-flex;
    position: absolute;
    right: 12px; top: 50%;
    transform: translateY(-50%);
  }

  .main-nav {
    width: calc(100% - 2rem);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 10px;
    box-shadow: 0 10px 28px rgba(0,0,0,.2);
    overflow: hidden auto;
    max-height: 0;
    padding: 0;
    transition: max-height .35s ease, padding .25s ease;
    display: flex;
    flex-direction: column;
    margin: 0 auto .5rem;
  }
  .main-nav.open { max-height: 80vh; padding: 8px 10px; }

  .main-nav .nav-button {
    display: block; width: 100%; text-align: left;
    padding: .85rem .85rem; border-radius: 6px; border-bottom: none;
  }
  .main-nav .nav-button:hover,
  .main-nav .nav-button.active { background: rgba(255,255,255,0.1); }

  .main-nav .search-and-filter-container {
    display: grid; gap: 10px; padding: 10px; margin-top: 6px;
    background: rgba(255,255,255,0.05); border: 1px dashed rgba(255,255,255,0.25);
  }
  .main-nav .search-box { width: 100%; display: grid; grid-template-columns: 1fr auto; gap: 8px; }
  .main-nav #searchInput { width: 100%; }
  .main-nav #searchButton { width: 100%; }
  .main-nav .filter-options { width: 100%; display: grid; gap: 6px; color: var(--paper); }
  .main-nav #filterSelect { width: 100%; }

  .cards-container { grid-template-columns: 1fr; gap: 1.5rem; }
  .card { max-width: 92%; margin: 0 auto; }
  .section-title { font-size: 1.4rem; }

  .pdf-container { padding: .5rem 1rem 1.25rem; }
  #pdf-viewer { height: 60vh; }

  .stars { font-size: 1.2rem; }

  .about-container, .form-container { padding: 1.5rem; margin: 1.25rem auto; }
}

/* Acessibilidade: reduz animações */
@media (prefers-reduced-motion: reduce) {
  .main-nav, .hamburger span, .card, .card-button { transition: none !important; }
}