/* Tema da Biblioteca no padrão visual do site da SBrT (ww2.sbrt.org.br).
   Carregado depois do MDB: sobrescreve cores, tipografia e componentes. */

:root {
  --sbrt-navy: #122a45;
  --sbrt-navy-dark: #0c243c;
  --sbrt-navy-deep: #081a2c;
  --sbrt-blue: #1f6fb2;
  --sbrt-blue-light: #6fa8dd;
  --sbrt-bg: #fdfdfc;
  --sbrt-surface: #fff;
  --sbrt-muted-bg: #eef1f4;
  --sbrt-chip-bg: #eef2f5;
  --sbrt-border: #e2e8ee;
  --sbrt-text: #12212f;
  --sbrt-text-2: #44515e;
  --sbrt-text-3: #54606c;
  --sbrt-meta: #6a7169;
  --sbrt-footer-text: #a9c2dd;
  --sbrt-footer-dim: #7c94ab;
  --sbrt-serif: 'Newsreader', Georgia, serif;
  --sbrt-sans: 'Public Sans', system-ui, sans-serif;
  --sbrt-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

/* ---------- Base ---------- */
body {
  font-family: var(--sbrt-sans);
  background: var(--sbrt-bg);
  color: var(--sbrt-text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
main { flex: 1 0 auto; }
a { color: var(--sbrt-blue); }
a:hover { color: var(--sbrt-navy); }
h1, h2, h3, h4, h5, .sbrt-serif { font-family: var(--sbrt-serif); font-weight: 500; color: var(--sbrt-text); }
a:focus-visible, button:focus-visible, select:focus-visible, input:focus-visible {
  outline: 3px solid var(--sbrt-blue); outline-offset: 3px; border-radius: 3px;
}

.sbrt-wrap { max-width: 1200px; width: 100%; margin: 0 auto; padding: 0 48px; }
.sbrt-eyebrow {
  font-family: var(--sbrt-mono); font-size: 12px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--sbrt-blue);
}
.sbrt-meta { font-family: var(--sbrt-mono); font-size: 12px; color: var(--sbrt-meta); letter-spacing: .02em; }
.sbrt-muted { color: var(--sbrt-text-3); }
.sbrt-link-arrow { font-size: 14px; font-weight: 600; color: var(--sbrt-blue); text-decoration: none; }
.sbrt-link-arrow:hover { text-decoration: underline; }

/* ---------- Botões (MDB deixa em caixa alta e com sombra) ---------- */
.btn {
  text-transform: none; letter-spacing: 0; box-shadow: none;
  font-family: var(--sbrt-sans); font-weight: 600; border-radius: 7px;
}
.btn:hover, .btn:focus, .btn:active { box-shadow: none; }
.btn-primary { background-color: var(--sbrt-navy); color: #fff; }
.btn-primary:hover, .btn-primary:focus, .btn-primary:active { background-color: var(--sbrt-blue); color: #fff; }
.btn-outline {
  border: 1px solid var(--sbrt-border); background: var(--sbrt-surface); color: var(--sbrt-navy);
}
.btn-outline:hover { border-color: var(--sbrt-navy); color: var(--sbrt-navy); background: var(--sbrt-surface); }
.btn.disabled { opacity: .45; }

/* ---------- Barra superior e cabeçalho ---------- */
.sbrt-utilbar {
  background: var(--sbrt-navy-dark); color: var(--sbrt-footer-text);
  font-size: 12.5px; letter-spacing: .02em; padding: 8px 0;
}
.sbrt-utilbar .sbrt-wrap { display: flex; justify-content: space-between; gap: 16px; }
.sbrt-utilbar a { color: var(--sbrt-footer-text); text-decoration: none; }
.sbrt-utilbar a:hover { color: #fff; }

.sbrt-header {
  background: var(--sbrt-surface); border-bottom: 1px solid var(--sbrt-border);
  position: sticky; top: 0; z-index: 1020; padding: 18px 0; box-shadow: none;
}
.sbrt-header .navbar { padding: 0; box-shadow: none; background: transparent; }
.sbrt-header .sbrt-wrap { width: 100%; }
.sbrt-brand { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.sbrt-brand img { height: 48px; width: auto; border-radius: 6px; }
.sbrt-brand-text {
  border-left: 1px solid var(--sbrt-border); padding-left: 14px; line-height: 1.2;
}
.sbrt-brand-title { display: block; font-family: var(--sbrt-serif); font-size: 22px; font-weight: 500; color: var(--sbrt-navy); }
.sbrt-brand-sub { display: block; font-size: 12px; color: #5b6b7d; letter-spacing: .02em; margin-top: 2px; }
.sbrt-nav { gap: 26px; align-items: center; }
.sbrt-nav .nav-link {
  color: var(--sbrt-navy); font-size: 14.5px; font-weight: 500; padding: 0;
}
.sbrt-nav .nav-link:hover, .sbrt-nav .nav-link.active { color: var(--sbrt-blue); }
.sbrt-nav .sbrt-ext { font-size: 11px; color: #5f6b78; }
.sbrt-nav .btn { padding: 9px 18px; font-size: 14.5px; }
.sbrt-header .navbar-toggler { color: var(--sbrt-navy); font-size: 22px; padding: 4px 6px; }

/* ---------- Rodapé ---------- */
.sbrt-footer { background: var(--sbrt-navy-deep); color: var(--sbrt-footer-text); padding: 52px 0; margin-top: 72px; font-size: 13.5px; }
.sbrt-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.sbrt-footer img { height: 44px; width: auto; border-radius: 6px; background: #fff; padding: 4px; }
.sbrt-footer p { line-height: 1.6; margin: 16px 0 0; max-width: 300px; }
.sbrt-footer-col { display: flex; flex-direction: column; gap: 9px; }
.sbrt-footer-col strong { color: #fff; font-weight: 600; }
.sbrt-footer a { color: var(--sbrt-footer-text); text-decoration: none; }
.sbrt-footer a:hover { color: #fff; }
.sbrt-footer-bottom {
  margin-top: 36px; padding-top: 20px; border-top: 1px solid #1b3853;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-size: 12.5px; color: var(--sbrt-footer-dim);
}
.sbrt-footer-bottom a { color: var(--sbrt-footer-dim); }

/* ---------- Busca ---------- */
.sbrt-search { display: flex; max-width: 640px; }
.sbrt-search input, .sbrt-search select {
  border: 1px solid #c7cfd8; background: var(--sbrt-surface); color: var(--sbrt-text);
  font-family: var(--sbrt-sans); font-size: 15px; padding: 11px 14px; min-width: 0;
}
.sbrt-search input { flex: 1; border-radius: 8px 0 0 8px; }
.sbrt-search select { border-left: 0; cursor: pointer; }
.sbrt-search button { border-radius: 0 8px 8px 0; padding: 0 20px; }
.sbrt-search input:focus, .sbrt-search select:focus { outline: 2px solid var(--sbrt-blue); outline-offset: -1px; }

/* ---------- Campos de formulário simples (login) ---------- */
.sbrt-field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--sbrt-navy); margin-bottom: 6px; }
.sbrt-field input {
  width: 100%; border: 1px solid #c7cfd8; border-radius: 8px; padding: 10px 12px;
  font-family: var(--sbrt-sans); font-size: 15px; background: var(--sbrt-surface); color: var(--sbrt-text);
}
.sbrt-field input:focus { outline: 2px solid var(--sbrt-blue); outline-offset: -1px; }

/* ---------- Início ---------- */
.sbrt-hero { padding: 56px 0 40px; }
.sbrt-hero h1 { font-size: clamp(32px, 5vw, 48px); line-height: 1.12; margin: 14px 0 16px; max-width: 820px; }
.sbrt-hero p { font-size: 17px; color: var(--sbrt-text-2); line-height: 1.6; max-width: 720px; margin-bottom: 28px; }

.sbrt-section-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  border-top: 3px solid var(--sbrt-navy); padding-top: 22px; margin: 16px 0 28px;
}
.sbrt-section-head h2 { font-size: 32px; margin: 0; color: var(--sbrt-navy-dark); }

.sbrt-events { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px 28px; }
.sbrt-event { display: block; text-decoration: none; color: inherit; }
.sbrt-event-logo {
  aspect-ratio: 4 / 3; border-radius: 12px; background: var(--sbrt-muted-bg);
  display: flex; align-items: center; justify-content: center; padding: 18px; overflow: hidden;
  transition: background .15s;
}
.sbrt-event-logo img { max-width: 100%; max-height: 100%; object-fit: contain; }
.sbrt-event:hover .sbrt-event-logo { background: #e2e8ee; }
.sbrt-event .sbrt-meta { margin-top: 14px; }
.sbrt-event h3 { font-size: 21px; margin: 6px 0 4px; line-height: 1.25; }
.sbrt-event:hover h3 { color: var(--sbrt-blue); }
.sbrt-event p { font-size: 14px; color: var(--sbrt-text-3); line-height: 1.5; margin: 0; }

/* ---------- Cabeçalho de página (evento, busca, artigo) ---------- */
.sbrt-pagehead { padding: 40px 0 8px; }
.sbrt-pagehead h1 { font-size: clamp(28px, 4vw, 40px); line-height: 1.15; margin: 12px 0 10px; }
.sbrt-eventhead { display: flex; gap: 28px; align-items: center; }
.sbrt-eventhead .sbrt-event-logo { width: 180px; flex: none; }
.sbrt-back { font-family: var(--sbrt-mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; text-decoration: none; }

/* ---------- Lista de artigos ---------- */
.sbrt-articles { border-top: 1px solid var(--sbrt-border); }
.sbrt-article-item {
  display: grid; grid-template-columns: 1fr 120px; gap: 28px;
  padding: 28px 0; border-bottom: 1px solid var(--sbrt-border);
}
.sbrt-article-item h3 { font-size: 22px; line-height: 1.3; margin: 8px 0 8px; }
.sbrt-article-item h3 a { color: var(--sbrt-text); text-decoration: none; }
.sbrt-article-item h3 a:hover { color: var(--sbrt-blue); }
.sbrt-authors { font-size: 14.5px; color: var(--sbrt-text-2); margin-bottom: 10px; }
.sbrt-abstract { font-size: 14.5px; color: var(--sbrt-text-3); line-height: 1.6; margin-bottom: 12px; }
.sbrt-actions { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; margin-top: 14px; }
.sbrt-actions .btn { padding: 7px 14px; font-size: 13.5px; }
.sbrt-thumb {
  display: block; border: 1px solid var(--sbrt-border); border-radius: 6px; overflow: hidden;
  background: var(--sbrt-surface); align-self: start;
}
.sbrt-thumb img { width: 100%; display: block; }
.sbrt-thumb:hover { border-color: var(--sbrt-navy); }

.sbrt-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.sbrt-chip {
  background: var(--sbrt-chip-bg); color: var(--sbrt-navy); border-radius: 100px;
  font-size: 12.5px; padding: 3px 11px; line-height: 1.5;
}

.sbrt-pagination { display: flex; justify-content: center; align-items: center; gap: 10px; margin: 28px 0; font-size: 14px; color: var(--sbrt-text-3); }
.sbrt-pagination select { border: 1px solid #c7cfd8; border-radius: 6px; padding: 4px 6px; background: var(--sbrt-surface); }
.sbrt-pagination .btn { padding: 6px 12px; }

/* ---------- Página do artigo ---------- */
.sbrt-article { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 56px; padding-top: 40px; }
.sbrt-article h1 { font-size: clamp(28px, 4vw, 40px); line-height: 1.18; margin: 12px 0 14px; }
.sbrt-article .sbrt-authors { font-size: 16px; }
.sbrt-article h2 { font-size: 22px; margin: 32px 0 10px; }
.sbrt-article .sbrt-abstract { font-size: 16px; color: var(--sbrt-text-2); line-height: 1.7; }
.sbrt-aside { display: flex; flex-direction: column; gap: 16px; }
.sbrt-aside .sbrt-thumb { max-width: 220px; }
.sbrt-aside dl { margin: 8px 0 0; font-size: 14px; }
.sbrt-aside dt { font-family: var(--sbrt-mono); font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--sbrt-meta); font-weight: 400; margin-top: 14px; }
.sbrt-aside dd { margin: 4px 0 0; word-break: break-word; }

/* ---------- Componentes do MDB usados pelo admin ---------- */
.card { border: 1px solid var(--sbrt-border); border-radius: 12px; box-shadow: none; }
.badge.bg-dark { background: var(--sbrt-chip-bg) !important; color: var(--sbrt-navy); font-weight: 500; }
.form-outline .form-control:focus ~ .form-notch .form-notch-leading,
.form-outline .form-control:focus ~ .form-notch .form-notch-middle,
.form-outline .form-control:focus ~ .form-notch .form-notch-trailing { border-color: var(--sbrt-blue); }
.form-outline .form-control:focus ~ .form-label { color: var(--sbrt-blue); }
.alert { border-radius: 8px; }

/* ---------- Responsivo ---------- */
@media (max-width: 991px) {
  .sbrt-events { grid-template-columns: repeat(3, 1fr); }
  .sbrt-nav { gap: 14px; align-items: flex-start; padding: 16px 0 4px; }
  .sbrt-footer-grid { grid-template-columns: 1fr 1fr; }
  .sbrt-article { grid-template-columns: 1fr; gap: 32px; }
  .sbrt-aside { flex-direction: row; flex-wrap: wrap; align-items: flex-start; }
}
@media (max-width: 640px) {
  .sbrt-wrap { padding: 0 20px; }
  .sbrt-utilbar .sbrt-hide-sm { display: none; }
  .sbrt-events { grid-template-columns: repeat(2, 1fr); gap: 24px 16px; }
  .sbrt-event h3 { font-size: 18px; }
  .sbrt-brand-sub { display: none; }
  .sbrt-brand img { height: 40px; }
  .sbrt-eventhead { flex-direction: column; align-items: flex-start; gap: 16px; }
  .sbrt-eventhead .sbrt-event-logo { width: 140px; }
  .sbrt-article-item { grid-template-columns: 1fr 72px; gap: 16px; }
  .sbrt-search { flex-wrap: wrap; }
  .sbrt-search input { flex-basis: 100%; border-radius: 8px 8px 0 0; }
  .sbrt-search select { flex: 1; border-left: 1px solid #c7cfd8; border-top: 0; border-radius: 0 0 0 8px; }
  .sbrt-search button { border-radius: 0 0 8px 0; padding: 10px 20px; }
  .sbrt-footer-grid { grid-template-columns: 1fr; }
}