/* CAA 2026 — Premium design system
   Based on the validated CAA pilot template (CAA - 01..05 premium HTMLs)
   Palette: navy + gold + cream, Inter + Crimson Pro + JetBrains Mono */

:root {
  --navy-deep: #0a1929;
  --navy: #112240;
  --navy-soft: #1a3461;
  --gold: #c9a55b;
  --gold-soft: #d4b876;
  --gold-glow: rgba(201, 165, 91, 0.15);
  --cream: #f4ede0;
  --paper: #faf7f0;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --line: #e3dfd0;
  --success: #2e7d4a;
  --error: #b8364a;
  --shadow-sm: 0 1px 2px rgba(10,25,41,.06), 0 1px 3px rgba(10,25,41,.04);
  --shadow-md: 0 4px 12px rgba(10,25,41,.08), 0 2px 4px rgba(10,25,41,.04);
  --shadow-lg: 0 12px 32px rgba(10,25,41,.12), 0 4px 12px rgba(10,25,41,.06);
  --shadow-xl: 0 24px 60px rgba(10,25,41,.18), 0 8px 24px rgba(10,25,41,.10);
  --radius: 14px;
  --radius-lg: 20px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'ss01', 'cv11';
}
.serif { font-family: 'Crimson Pro', Georgia, serif; }
.mono { font-family: 'JetBrains Mono', 'Cascadia Code', Consolas, monospace; }

/* ===== APP SHELL ===== */
.app { display: flex; min-height: 100vh; }

/* ===== SIDEBAR ===== */
.sidebar {
  width: 320px;
  background: linear-gradient(180deg, var(--navy-deep) 0%, var(--navy) 100%);
  color: var(--cream);
  padding: 32px 24px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  flex-shrink: 0;
  border-right: 1px solid rgba(201,165,91,.12);
}
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--navy-soft); border-radius: 3px; }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; text-decoration: none; color: inherit; }
.brand-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-soft) 100%);
  border-radius: 10px;
  display: grid; place-items: center;
  font-weight: 800; color: var(--navy-deep);
  font-size: 18px; letter-spacing: -0.5px;
  box-shadow: 0 4px 12px rgba(201,165,91,.25);
}
.brand-title { font-weight: 700; font-size: 16px; letter-spacing: -.3px; }
.brand-sub { font-size: 11px; color: var(--gold); text-transform: uppercase; letter-spacing: 1.5px; margin-top: 2px; }
.apostila-info { padding: 20px 0; border-top: 1px solid rgba(201,165,91,.15); border-bottom: 1px solid rgba(201,165,91,.15); margin-bottom: 24px; }
.apostila-info h1 { font-size: 18px; font-weight: 700; line-height: 1.3; color: var(--cream); }
.apostila-info .meta { font-size: 12px; color: var(--gold); margin-top: 8px; letter-spacing: .5px; }

.nav-label { font-size: 10px; text-transform: uppercase; letter-spacing: 2px; color: var(--gold); margin: 24px 0 12px; font-weight: 600; }
.tema-list { list-style: none; }
.tema-item { margin-bottom: 4px; }
.tema-link {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  color: var(--cream);
  text-decoration: none;
  font-size: 14px; font-weight: 500;
  transition: all .2s;
  cursor: pointer;
  border: 1px solid transparent;
}
.tema-link:hover { background: rgba(201,165,91,.08); border-color: rgba(201,165,91,.18); }
.tema-link.active { background: var(--gold-glow); border-color: var(--gold); color: var(--gold-soft); }
.tema-num {
  width: 28px; height: 28px; flex-shrink: 0;
  background: rgba(255,255,255,.06);
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 12px; font-weight: 600;
  border: 1px solid rgba(201,165,91,.2);
}
.tema-link.active .tema-num { background: var(--gold); color: var(--navy-deep); border-color: var(--gold); }
.tema-name { line-height: 1.3; }

.progress-block { margin-top: 32px; padding: 20px; background: rgba(201,165,91,.05); border-radius: 12px; border: 1px solid rgba(201,165,91,.12); }
.progress-label { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--gold); font-weight: 600; margin-bottom: 10px; }
.progress-bar { height: 6px; background: rgba(255,255,255,.06); border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--gold) 0%, var(--gold-soft) 100%); border-radius: 3px; transition: width .5s ease; }
.progress-stats { display: flex; justify-content: space-between; margin-top: 8px; font-size: 11px; color: var(--cream); opacity: .7; }

/* ===== MAIN CONTENT ===== */
.main { flex: 1; padding: 48px 64px; max-width: 100%; overflow-x: hidden; }
.tela { display: none; animation: fadeIn .4s ease; }
.tela.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.topo { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--line); flex-wrap: wrap; gap: 16px; }
.topo-info { display: flex; flex-direction: column; gap: 6px; }
.topo-tema { font-size: 11px; text-transform: uppercase; letter-spacing: 2px; color: var(--gold); font-weight: 600; }
.topo-titulo { font-size: 32px; font-weight: 700; color: var(--navy-deep); letter-spacing: -.8px; }
.topo-tipo { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; background: var(--gold-glow); color: var(--navy); border-radius: 6px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; align-self: flex-start; }
.topo-tipo::before { content: ''; width: 6px; height: 6px; background: var(--gold); border-radius: 50%; }

.nav-telas { display: flex; gap: 8px; flex-wrap: wrap; }
.btn-nav {
  padding: 8px 16px; border-radius: 8px;
  background: white; color: var(--navy);
  border: 1px solid var(--line);
  font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all .2s;
  font-family: inherit;
  display: inline-flex; align-items: center; gap: 6px;
  text-decoration: none;
}
.btn-nav:hover { background: var(--navy); color: var(--cream); border-color: var(--navy); }
.btn-nav:disabled { opacity: .35; cursor: not-allowed; }
.btn-nav.primary { background: var(--gold-glow); border-color: var(--gold); color: var(--navy-deep); font-weight: 600; }
.btn-nav.primary:hover { background: var(--gold); color: var(--navy-deep); border-color: var(--gold); }

/* ===== MAPA MENTAL ===== */
.mindmap { background: white; border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-md); border: 1px solid var(--line); }
.mindmap pre {
  font-family: 'JetBrains Mono', 'Cascadia Code', Consolas, monospace;
  font-size: 13px; line-height: 1.7;
  color: var(--ink); white-space: pre; overflow-x: auto;
  background: linear-gradient(180deg, #fdfcf7 0%, #f7f3e9 100%);
  padding: 28px; border-radius: 12px;
  border: 1px solid var(--line);
}
.mindmap pre .root { color: var(--navy); font-weight: 700; }

/* ===== RESUMO EXECUTIVO ===== */
.resumo-card {
  background: linear-gradient(135deg, white 0%, #fdfcf7 100%);
  border-radius: var(--radius-lg);
  padding: 40px 44px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
}
.resumo-eyebrow { font-size: 11px; text-transform: uppercase; letter-spacing: 2px; color: var(--gold); font-weight: 700; margin-bottom: 16px; }
.resumo-titulo { font-family: 'Crimson Pro', Georgia, serif; font-size: 28px; font-weight: 600; color: var(--navy-deep); margin-bottom: 20px; line-height: 1.3; letter-spacing: -.3px; }
.resumo-texto { font-size: 17px; line-height: 1.8; color: var(--ink); }
.resumo-texto strong { color: var(--navy); font-weight: 600; }

/* ===== CONCEITOS-CHAVE ===== */
.conceitos-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.conceito-card {
  background: white;
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  display: flex; gap: 14px;
  transition: all .2s;
}
.conceito-card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); border-color: var(--gold-soft); }
.conceito-bullet { color: var(--gold); font-size: 20px; line-height: 1.6; flex-shrink: 0; }
.conceito-texto { font-size: 15px; line-height: 1.6; color: var(--ink); }
.conceito-texto strong { color: var(--navy); font-weight: 600; }
.conceito-texto em { color: var(--ink-soft); font-style: normal; font-size: 13px; }

/* ===== FLASHCARDS ===== */
.flashcard-stage { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.flashcard {
  width: 100%; max-width: 640px;
  min-height: 340px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
  padding: 40px;
  position: relative;
  perspective: 1200px;
  cursor: pointer;
  user-select: none;
}
.flashcard-inner {
  position: relative; width: 100%; height: 100%;
  transition: transform .6s cubic-bezier(.4,0,.2,1);
  transform-style: preserve-3d;
  min-height: 260px;
}
.flashcard.flipped .flashcard-inner { transform: rotateY(180deg); }
.flashcard-face {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  backface-visibility: hidden;
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 8px;
}
.flashcard-back { transform: rotateY(180deg); }
.flashcard-label { font-size: 11px; text-transform: uppercase; letter-spacing: 2px; color: var(--gold); font-weight: 700; margin-bottom: 16px; }
.flashcard-question { font-family: 'Crimson Pro', Georgia, serif; font-size: 22px; line-height: 1.5; color: var(--navy-deep); font-weight: 500; }
.flashcard-answer { font-size: 16px; line-height: 1.7; color: var(--ink); }
.flashcard-answer strong { color: var(--navy); }
.flashcard-hint { position: absolute; bottom: 16px; right: 20px; font-size: 11px; color: var(--ink-soft); display: flex; align-items: center; gap: 6px; }
.flashcard-hint::before { content: '↻'; font-size: 14px; }

.flashcard-controls { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.btn-acertei, .btn-errei {
  padding: 14px 24px; border-radius: 10px;
  font-size: 14px; font-weight: 600;
  border: 1px solid; cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  font-family: inherit;
  transition: all .2s;
}
.btn-acertei { background: rgba(46,125,74,.08); color: var(--success); border-color: rgba(46,125,74,.3); }
.btn-acertei:hover { background: var(--success); color: white; border-color: var(--success); }
.btn-errei { background: rgba(184,54,74,.08); color: var(--error); border-color: rgba(184,54,74,.3); }
.btn-errei:hover { background: var(--error); color: white; border-color: var(--error); }

.flashcard-counter { font-size: 13px; color: var(--ink-soft); font-weight: 500; }
.flashcard-counter strong { color: var(--navy); }

/* ===== AUDIO PLAYER ===== */
.audio-block {
  background: linear-gradient(135deg, white 0%, #fdfcf7 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 0 0 32px;
  display: flex; gap: 16px; align-items: center;
  box-shadow: var(--shadow-sm);
}
.audio-block .ico {
  font-size: 28px; flex-shrink: 0;
  width: 48px; height: 48px;
  display: grid; place-items: center;
  background: var(--gold-glow);
  border-radius: 12px;
}
.audio-block .audio-info { flex: 1; min-width: 0; }
.audio-block .audio-info .label { font-size: 11px; text-transform: uppercase; letter-spacing: 2px; color: var(--gold); font-weight: 700; }
.audio-block .audio-info .desc { font-size: 13px; color: var(--ink-soft); margin-top: 2px; }
.audio-block audio { width: 100%; margin-top: 8px; height: 36px; }

/* ===== MATERIA BODY (artigo renderizado do MD) ===== */
.materia-body {
  background: white;
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.75;
}
.materia-body > * + * { margin-top: 18px; }
.materia-body > h1 + *,
.materia-body > h2 + *,
.materia-body > h3 + * { margin-top: 12px; }
.materia-body h1 { font-family: 'Crimson Pro', Georgia, serif; font-size: 34px; font-weight: 600; color: var(--navy-deep); letter-spacing: -.5px; line-height: 1.2; border-bottom: 2px solid var(--gold); padding-bottom: 16px; }
.materia-body h2 { font-family: 'Crimson Pro', Georgia, serif; font-size: 24px; font-weight: 600; color: var(--navy-deep); margin-top: 36px !important; padding-bottom: 8px; border-bottom: 1px solid var(--line); letter-spacing: -.3px; }
.materia-body h3 { font-family: 'Inter', sans-serif; font-size: 18px; font-weight: 700; color: var(--gold); margin-top: 28px !important; letter-spacing: -.2px; }
.materia-body h4 { font-size: 16px; font-weight: 700; color: var(--navy); margin-top: 22px !important; }
.materia-body p { color: var(--ink); }
.materia-body strong { color: var(--navy-deep); font-weight: 600; }
.materia-body em { color: var(--ink-soft); }
.materia-body a { color: var(--navy); text-decoration: underline; text-decoration-color: var(--gold); text-underline-offset: 3px; }
.materia-body a:hover { color: var(--gold-soft); }
.materia-body ul, .materia-body ol { padding-left: 24px; }
.materia-body li { margin: 6px 0; }
.materia-body li > strong:first-child { color: var(--navy); }
.materia-body blockquote {
  border-left: 4px solid var(--gold);
  background: linear-gradient(90deg, var(--gold-glow) 0%, transparent 100%);
  padding: 14px 20px;
  margin: 20px 0;
  border-radius: 0 8px 8px 0;
  color: var(--ink-soft);
  font-style: normal;
}
.materia-body blockquote p { color: var(--ink-soft); }
.materia-body code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  background: #fdfcf7;
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--navy-deep);
}
.materia-body pre {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.6;
  background: linear-gradient(180deg, #fdfcf7 0%, #f7f3e9 100%);
  padding: 20px 24px;
  border-radius: 10px;
  border: 1px solid var(--line);
  overflow-x: auto;
}
.materia-body pre code { background: transparent; border: none; padding: 0; }
.materia-body table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px; }
.materia-body th, .materia-body td { padding: 10px 14px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.materia-body th { background: #f7f3e9; color: var(--navy-deep); font-weight: 700; }
.materia-body tr:nth-child(even) td { background: #fdfcf7; }
.materia-body hr { border: none; border-top: 1px solid var(--line); margin: 32px 0; }
.materia-body input[type="checkbox"] { accent-color: var(--gold); transform: scale(1.1); margin-right: 6px; }

/* ===== ACTION ROW (botoes finais) ===== */
.action-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.action-row .btn-nav { padding: 10px 18px; font-size: 14px; }

/* ===== FOOTER ===== */
.footer-premium {
  margin-top: 64px;
  padding: 32px 64px;
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--ink-soft);
  font-size: 13px;
}
.footer-premium code { font-family: 'JetBrains Mono', monospace; color: var(--navy); }

/* ===== DIVIDER ===== */
.divider-gold { width: 60px; height: 2px; background: var(--gold); margin: 24px 0; }

/* ===== UTILITÁRIOS ===== */
.icon { width: 16px; height: 16px; }

/* ===== RESPONSIVO ===== */
@media (max-width: 900px) {
  .app { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: relative; padding: 20px; max-height: 320px; }
  .main { padding: 24px 20px; }
  .topo { flex-direction: column; align-items: flex-start; gap: 16px; }
  .topo-titulo { font-size: 24px; }
  .resumo-card, .mindmap { padding: 24px; }
  .flashcard { padding: 24px; min-height: 280px; }
  .flashcard-question { font-size: 18px; }
  .materia-body { padding: 28px 24px; }
  .materia-body h1 { font-size: 26px; }
  .materia-body h2 { font-size: 20px; }
  .footer-premium { padding: 20px; }
}