/* ============================================================
   SHELL COMPARTILHADO — CEFOR/Ifes (header · breadcrumb · footer)
   Fonte única de estilo da "casca" das páginas.

   Carregar DEPOIS do <style> base de cada página, para prevalecer
   sobre o CSS inline legado (que será removido numa limpeza posterior).
   O HTML do footer é injetado por shell.js; o header permanece inline
   em cada página (navegação primária não deve depender de JS).
   ============================================================ */

/* ============================================================
   DESIGN SYSTEM TOKENS & GLOBALS (Centralizado)
   ============================================================ */
:root {
  /* Layout estrutural */
  --maxw: 1280px;
  --maxw-read: 760px;
  --pad-x: 32px;

  /* Surfaces */
  --bg: #ffffff;
  --bg-2: #f7f5f1;
  --bg-3: #efeae0;
  --paper: #ffffff;

  /* Ink */
  --ink: #14110d;
  --ink-2: #4a4439;
  --ink-3: #8a8273;

  /* Lines */
  --line: #e7e3d8;
  --line-2: #d4cdba;

  /* Marca — verde em 4 tons */
  --verde-profundo: #1c4a36;
  --verde-marca:    #2e7355;
  --verde-claro:    #6ea892;
  --verde-palido:   #e6efe9;
  --verde-on-dark:  #d4ece0;

  /* Acento quente */
  --gold-soft: #f3e7d0;

  /* Família dos artigos — 7 principais */
  --art-roxo:    #9c6dcb;
  --art-azul:    #5d9bd8;
  --art-ambar:   #e8b53a;
  --art-magenta: #c46aac;
  --art-coral:   #ed8366;
  --art-teal:    #5ea9b2;
  --art-anil:    #7b81d7;

  /* Atribuição categoria → cor da família */
  --cat-ferramentas:    var(--art-azul);
  --cat-gestao-moodle:  var(--art-teal);
  --cat-pedagogia:      var(--art-coral);
  --cat-acessibilidade: var(--art-roxo);
  --cat-conduta:        var(--art-ambar);
  --cat-identidade:     var(--art-magenta);

  /* Acentos de protótipos */
  --accent:       #1f5142;
  --accent-2:     #2d6a4f;
  --accent-deep:  #143a30;
  --accent-soft:  #e3ecdf;
  --gold:         #b08544;
  --gold-deep:    #8c6a36;
  --rose:         #b3433a;
  --rose-soft:    #f4dcd7;
  --sun:          #c98a1e;
  --sun-soft:     #f7e6c4;
  --sky:          #2c5e8f;
  --sky-soft:     #d9e7f3;

  /* Tipografia */
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Radii */
  --r-sm: 6px; --r-md: 10px; --r-lg: 16px; --r-xl: 24px;

  /* Elevation */
  --shadow-sm: 0 1px 2px rgba(20,17,13,.04);
  --shadow-md: 0 4px 12px rgba(20,17,13,.06), 0 2px 4px rgba(20,17,13,.04);
  --shadow-lg: 0 24px 48px -12px rgba(20,17,13,.12);

  --font-scale: 1;
}

[data-theme="dark"] {
  --bg: #0e0c0a;
  --bg-2: #16130f;
  --bg-3: #1e1a14;
  --paper: #1a1612;
  --ink: #f4f1ea;
  --ink-2: #c9c2b3;
  --ink-3: #8a8273;
  --line: #2a251e;
  --line-2: #3a342a;
  --verde-profundo: #2e7355;
  --verde-marca:    #6cb89a;
  --verde-claro:    #9ed1bd;
  --verde-palido:   #1f3329;
  --accent:         #6cb89a;
  --accent-2:       #87cdb0;
  --accent-deep:    #143a30;
  --accent-soft:    #19251f;
  --gold-soft:      #3d3424;
  --gold-deep:      #d9a955;
  --rose-soft:      #2e1a17;
  --sun-soft:       #2e2310;
  --sky-soft:       #16222e;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,.25);
  --shadow-lg: 0 24px 48px -12px rgba(0,0,0,.4);
}

/* ---------- RESET & GLOBAL STYLES ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: calc(16px * var(--font-scale)); }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 1rem; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--verde-marca); outline-offset: 3px; border-radius: 4px; }
img, svg { max-width: 100%; display: block; }

/* Skip Links de Acessibilidade */
.skip, .skip-link {
  position: absolute; left: -9999px; top: 8px;
  background: var(--verde-marca); color: #fff;
  padding: 8px 12px; border-radius: var(--r-sm); z-index: 100; font-weight: 600;
  transition: none;
}
.skip:focus, .skip-link:focus { left: 8px; }

/* ---------- DESIGN SYSTEM GRIDS & RESPONSIVENESS ---------- */
.card-grid, .trilha-grid, .trilhas-grid, .percurso-grid, .related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.card-grid, .related-grid { gap: 24px; }
.trilha-grid, .trilhas-grid, .percurso-grid { gap: 22px; }

@media (max-width: 920px) {
  .card-grid, .trilha-grid, .trilhas-grid, .percurso-grid, .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .card-grid, .trilha-grid, .trilhas-grid, .percurso-grid, .related-grid {
    grid-template-columns: 1fr;
  }
}

/* Grid dentro da área principal (ao lado da sidebar de filtros) */
.content-main .card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 920px) {
  .content-main .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .content-main .card-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- HEADER ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--verde-profundo);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.site-header a { text-decoration: none; }
.header-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 14px var(--pad-x);
  display: flex; align-items: center; gap: 24px;
}
/* Folga à direita para a barra flutuante de acessibilidade (a11y.css, top-right)
   não cobrir a busca/hambúrguer. Abaixo de 540px a barra vai para o rodapé. */
@media (min-width: 541px) {
  .header-inner { padding-right: calc(var(--pad-x) + 52px); }
}
.brand { display: flex; align-items: center; gap: 12px; color: #ffffff; }
.brand:hover { text-decoration: none; }
.brand-logo { width: 36px; height: 36px; display: grid; place-items: center; }
.brand-logo svg,
.brand-logo img { width: 100%; height: 100%; object-fit: contain; color: #fff; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: .95rem; letter-spacing: -.01em; color: #fff; font-weight: 600; }
.brand-text span { font-size: .75rem; color: #a8c3ba; }

.nav { display: flex; gap: 6px; margin-left: auto; }
.nav a {
  color: rgba(255, 255, 255, 0.85); font-size: .92rem; font-weight: 500;
  padding: 8px 14px; border-radius: var(--r-md, 10px);
}
.nav a:hover { background: rgba(255, 255, 255, 0.14); color: #fff; }
.nav a.active { background: rgba(255, 255, 255, 0.14); color: #fff; }

/* Botão hambúrguer — injetado por shell.js, visível só no mobile */
.nav-toggle {
  display: none;
  align-items: center; justify-content: center;
  width: 42px; height: 42px;
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--r-md, 10px);
  color: #fff; cursor: pointer;
}
.nav-toggle:hover { background: rgba(255, 255, 255, 0.18); }
.nav-toggle:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle .icon-close { display: none; }
.site-header.menu-open .nav-toggle .icon-open { display: none; }
.site-header.menu-open .nav-toggle .icon-close { display: block; }

.header-search { position: relative; max-width: 280px; flex: 0 0 280px; display: flex; gap: 6px; }
.header-search input {
  flex: 1; min-width: 0; padding: 9px 12px; font: inherit; font-size: .88rem;
  background: rgba(255, 255, 255, 0.10); border: 1px solid rgba(255, 255, 255, 0.18); color: #fff;
  border-radius: var(--r-md, 10px);
}
.header-search input::placeholder { color: rgba(255, 255, 255, 0.55); }
/* O "x" nativo de limpar (WebKit/Blink) herda cor escura e some no fundo
   verde — redesenhado via mask para acompanhar a paleta do header. */
.header-search input::-webkit-search-cancel-button {
  -webkit-appearance: none; appearance: none;
  width: 14px; height: 14px; flex: 0 0 auto; cursor: pointer;
  background-color: rgba(255, 255, 255, 0.55);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 6l12 12M18 6L6 18' stroke='%23000' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 6l12 12M18 6L6 18' stroke='%23000' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") center / contain no-repeat;
}
.header-search input::-webkit-search-cancel-button:hover { background-color: #ffffff; }
.header-search button {
  flex: 0 0 auto; min-width: 38px; padding: 0 10px;
  background: rgba(255, 255, 255, 0.14); border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.85); border-radius: var(--r-md, 10px); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .15s, color .15s;
}
.header-search button:hover { background: rgba(255, 255, 255, 0.25); color: #fff; }
.header-search button svg { width: 16px; height: 16px; }

@media (max-width: 960px) {
  .header-inner { flex-wrap: wrap; gap: 12px 16px; }
  .brand { order: 1; }
  .nav-toggle { order: 2; margin-left: auto; }
  .header-search { order: 3; flex: 1 0 100%; max-width: none; }
  .nav { order: 4; flex-basis: 100%; margin-left: 0; }

  /* Com JS: o hambúrguer controla um drawer empilhado abaixo da marca */
  .site-header.has-js .nav-toggle { display: inline-flex; }
  .site-header.has-js .nav,
  .site-header.has-js .header-search { display: none; }
  .site-header.has-js.menu-open .header-search { display: flex; }
  .site-header.has-js.menu-open .nav {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px;
    padding-bottom: 4px;
  }
  .site-header.has-js.menu-open .nav a { padding: 12px 14px; }

  /* Sem JS (fallback): nav e busca sempre visíveis, empilhadas */
  .site-header:not(.has-js) .nav { display: flex; flex-wrap: wrap; }
}

/* ---------- BREADCRUMB ---------- */
.breadcrumb {
  background: var(--bg-2); padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: .82rem; color: var(--ink-3);
}
.breadcrumb-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad-x);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--ink-2); text-decoration: none; }
.breadcrumb a:hover { color: var(--verde-marca); }
.breadcrumb .sep { color: var(--ink-3); }
.breadcrumb .current { color: var(--ink); font-weight: 600; }

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--verde-profundo); color: rgba(255, 255, 255, 0.78);
  padding: 56px 0 32px;
}
.footer-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad-x);
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px;
}
.footer-inner h5 { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: #fff; margin: 0 0 16px; font-weight: 700; }
.footer-inner a { display: block; padding: 4px 0; font-size: .9rem; color: rgba(255, 255, 255, 0.78); text-decoration: none; }
.footer-inner a:hover { color: #fff; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-brand-mark { width: 32px; height: 32px; display: grid; place-items: center; }
.footer-brand-mark svg,
.footer-brand-mark img { width: 100%; height: 100%; object-fit: contain; color: #fff; }
.footer-brand-text { font-size: .9rem; color: #fff; font-weight: 600; }
.footer-desc { font-size: .88rem; color: rgba(255, 255, 255, 0.78); line-height: 1.55; margin: 0 0 12px; }
.footer-license { font-size: .8rem; color: rgba(255, 255, 255, 0.55); line-height: 1.4; }
.footer-bottom {
  max-width: var(--maxw); margin: 28px auto 0; padding: 20px var(--pad-x) 0;
  border-top: 1px solid rgba(255, 255, 255, .12);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: .8rem; color: rgba(255, 255, 255, 0.55);
}
@media (max-width: 768px) { .footer-inner { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-inner { grid-template-columns: 1fr; } }