/* Curso Corvino — paleta inspirada no app Flutter */
:root {
  --bg: #231f20;
  --bg-soft: #2c2729;
  --fg: #f4f0e6;
  --fg-dim: #a8a29a;
  --gold: #daa520;
  --gold-light: #f0c247;
  --metal: #c9c4ba;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  --radius: 12px;
}

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

html {
  /* Tamanho-base aumentado pra melhor legibilidade (idosos / leitura confortável).
     accessibility.js sobrescreve com zoom personalizado quando ativo. */
  font-size: 18px;
}

html, body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Segoe UI', Roboto, system-ui, sans-serif;
  min-height: 100vh;
  line-height: 1.75;
}

/* Parágrafos do conteúdo da aula com mais respiro */
.lesson-content p,
.lesson-content li {
  font-size: 1.05rem;
  line-height: 1.75;
}

a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold-light); text-decoration: underline; }

/* === HEADER === */
.site-header {
  background: linear-gradient(180deg, #1a1718 0%, var(--bg) 100%);
  border-bottom: 2px solid var(--gold);
  padding: 16px 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.site-header .wrap {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header .logo {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
}

.site-header .logo img {
  height: 64px;
  width: auto;
}

.site-header .logo .title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--gold);
  line-height: 1;
}

.site-header .logo .subtitle {
  font-size: 0.85rem;
  color: var(--fg-dim);
  letter-spacing: 1px;
  margin-top: 4px;
}

.site-header nav { display: flex; gap: 24px; }
.site-header nav a {
  color: var(--fg);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 1px;
}

/* === HERO === */
.hero {
  position: relative;
  max-width: 1280px;
  margin: 32px auto;
  padding: 0 24px;
}

.hero-banner {
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #000;
  aspect-ratio: 16/6;
  position: relative;
}

.hero-banner video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-banner .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.3) 70%);
  display: flex;
  align-items: center;
  padding: 0 60px;
}

.hero-text h1 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  color: var(--gold);
  margin-bottom: 12px;
  line-height: 1.2;
}

.hero-text p {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  color: var(--fg);
  max-width: 600px;
}

.hero-text .cta {
  display: inline-block;
  margin-top: 24px;
  background: var(--gold);
  color: var(--bg);
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.hero-text .cta:hover {
  background: var(--gold-light);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(218, 165, 32, 0.4);
}

/* === SECTION INTRO === */
.intro {
  max-width: 980px;
  margin: 48px auto;
  padding: 0 24px;
  text-align: center;
}

.intro h2 {
  color: var(--gold);
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.intro p {
  color: var(--fg-dim);
  font-size: 1.05rem;
  margin-bottom: 12px;
}

/* === MODULES GRID === */
.modules {
  max-width: 1280px;
  margin: 48px auto;
  padding: 0 24px;
}

.modules h2 {
  color: var(--gold);
  font-size: 1.8rem;
  margin-bottom: 24px;
  text-align: center;
}

.modules-section {
  margin-bottom: 40px;
}

.modules-section h3 {
  color: var(--metal);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  border-left: 3px solid var(--gold);
  padding-left: 12px;
  margin-bottom: 16px;
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.module-card {
  background: var(--bg-soft);
  border: 1px solid #3a3537;
  border-radius: var(--radius);
  padding: 20px;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-decoration: none;
  color: inherit;
}

.module-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: var(--shadow);
  text-decoration: none;
}

.module-card .num {
  color: var(--gold);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.module-card .title {
  color: var(--fg);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.3;
}

.module-card .desc {
  color: var(--fg-dim);
  font-size: 0.9rem;
  flex: 1;
}

.module-card .lessons {
  color: var(--metal);
  font-size: 0.8rem;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid #3a3537;
}

/* Help card — troubleshooting, aparência distinta (não faz parte do curso) */
.module-card.help-card {
  border-color: #6b5a1a;
  background: linear-gradient(135deg, var(--bg-soft) 0%, #2d2818 100%);
}
.module-card.help-card .num {
  color: #e0b84f;
}
.module-card.help-card:hover {
  border-color: #e0b84f;
}

/* === FOOTER === */
.site-footer {
  background: #1a1718;
  border-top: 2px solid var(--gold);
  padding: 32px 24px;
  margin-top: 64px;
  text-align: center;
  color: var(--fg-dim);
  font-size: 0.9rem;
}

.site-footer a { color: var(--gold); }

/* === LESSON PAGE === */
.lesson-layout {
  /* max-width removido: layout fluído ocupa toda a largura da tela.
     Padding mínimo (8px) na direita pro app colar na borda em monitores
     widescreen. À esquerda, 16px pra respiro do conteúdo da aula. */
  margin: 24px auto;
  padding: 0 8px 0 16px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 1100px) {
  /* Layout: conteúdo da aula (fluído) + app fixo de 540px à direita. */
  .lesson-layout { grid-template-columns: minmax(0, 1fr) 540px; }
}

/* === MODO "APP OCULTO" === */
/* Quando o usuário clica em "Ocultar app", body recebe class app-hidden.
   O app some e o conteúdo ocupa toda a largura. */
body.app-hidden .lesson-layout {
  grid-template-columns: 1fr !important;
}
body.app-hidden .app-panel {
  display: none;
}

/* === SPLITTER (divisor arrastável entre aula e app) === */
/* JS injeta <div class="layout-splitter"> entre lesson-content e app-panel,
   formando uma terceira coluna no grid. Em telas <1100px ou com app oculto,
   o splitter fica escondido. */
.layout-splitter {
  display: none;
}

@media (min-width: 1100px) {
  /* Reduzir column-gap — splitter ocupa o meio visualmente */
  .lesson-layout {
    column-gap: 8px;
  }

  .layout-splitter {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: col-resize;
    background: rgba(218, 165, 32, 0.06);
    border-radius: 6px;
    user-select: none;
    transition: background 0.2s, box-shadow 0.2s;
    position: relative;
  }

  .layout-splitter:hover,
  body.layout-dragging .layout-splitter {
    background: rgba(218, 165, 32, 0.28);
    box-shadow: 0 0 0 1px rgba(218, 165, 32, 0.4);
  }

  .layout-splitter-handle {
    color: #7a7577;
    font-size: 16px;
    line-height: 0.7;
    pointer-events: none;
    transition: color 0.2s;
    letter-spacing: -3px;
    font-weight: 900;
    user-select: none;
  }

  .layout-splitter:hover .layout-splitter-handle,
  body.layout-dragging .layout-splitter-handle {
    color: var(--gold);
  }
}

/* Durante o arraste — cursor col-resize em toda a página + bloqueia seleção */
body.layout-dragging,
body.layout-dragging * {
  cursor: col-resize !important;
  user-select: none !important;
}

/* Quando o app está oculto, splitter não faz sentido */
body.app-hidden .layout-splitter {
  display: none;
}

.lesson-content {
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.lesson-content .breadcrumb {
  color: var(--fg-dim);
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.lesson-content .breadcrumb a { color: var(--metal); }

.lesson-content h1 {
  color: var(--gold);
  font-size: 2rem;
  margin-bottom: 8px;
}

.lesson-content .subtitle {
  color: var(--fg-dim);
  font-size: 1rem;
  margin-bottom: 24px;
}

.lesson-content h2 {
  color: var(--gold-light);
  font-size: 1.3rem;
  margin: 24px 0 12px;
  border-left: 3px solid var(--gold);
  padding-left: 12px;
}

.lesson-content p { margin-bottom: 16px; }

.lesson-content blockquote {
  border-left: 3px solid var(--gold);
  background: rgba(218, 165, 32, 0.06);
  padding: 12px 18px;
  margin: 18px 0;
  font-style: italic;
  color: var(--fg);
}

.lesson-content ul, .lesson-content ol {
  margin: 12px 0 18px 24px;
}

.lesson-content li { margin-bottom: 8px; }

/* Linha do tempo — cada etapa histórica */
.timeline-step {
  border-left: 3px solid var(--gold);
  padding: 16px 0 16px 20px;
  margin: 24px 0;
  position: relative;
}

.timeline-step::before {
  content: '';
  position: absolute;
  left: -9px;
  top: 20px;
  width: 15px;
  height: 15px;
  background: var(--gold);
  border: 3px solid var(--bg-soft);
  border-radius: 50%;
}

.timeline-year {
  display: inline-block;
  color: var(--bg);
  background: var(--gold);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 1px;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.timeline-step h2 {
  color: var(--gold-light);
  border-left: none;
  padding-left: 0;
  margin: 4px 0 12px;
}

/* Bloco "Tente agora" — convite à ação */
.try-now {
  margin-top: 16px;
  background: rgba(218, 165, 32, 0.08);
  border: 1px solid var(--gold);
  border-radius: 10px;
  padding: 14px 18px;
}

.try-now-title {
  color: var(--gold);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.try-now ol {
  margin: 0 0 0 20px;
  padding: 0;
}

.try-now li {
  color: var(--fg);
  margin-bottom: 4px;
}

.lesson-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid #3a3537;
}

.lesson-nav a {
  background: var(--bg);
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid #3a3537;
}

.lesson-nav a:hover {
  border-color: var(--gold);
  text-decoration: none;
}

/* === APP EMBED === */
/* O app fica FIXO na tela conforme o aluno rola a aula —
   sticky em top:110px (abaixo do site-header) com altura limitada
   à viewport pra nunca "deslizar pra fora" em telas baixas. */
.app-panel {
  position: sticky;
  top: 110px;
  align-self: start;
  /* Limita altura à viewport disponível (descontando o header sticky
     de 96px + folga). Se a tela for baixa, o iframe encolhe ao invés
     de empurrar o sticky pra fora. */
  max-height: calc(100vh - 130px);
  display: flex;
  flex-direction: column;
  min-height: 0; /* permite que o flex children encolham abaixo do content-size */
}

.app-panel .panel-title {
  color: var(--metal);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.85rem;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto; /* título não encolhe */
}

.app-panel .panel-title::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--gold);
  border-radius: 50%;
}

.app-frame {
  width: 100%;
  /* Altura ideal de 540px, mas encolhe junto com o app-panel
     em telas baixas (até o min-height). */
  flex: 1 1 540px;
  min-height: 320px;
  border: 2px solid #3a3537;
  border-radius: var(--radius);
  background: #000;
  display: block;
  box-shadow: var(--shadow);
}

/* Em telas mobile (< 1100px) o layout vira 1 coluna e o app fica
   empilhado abaixo da aula — sticky perde o sentido (não há espaço
   lateral). Volta a `position: relative` e altura fixa pra evitar
   o app cobrir conteúdo ao final do scroll. */
@media (max-width: 1099px) {
  .app-panel {
    position: relative;
    top: auto;
    max-height: none;
    display: block;
  }
  .app-frame {
    flex: none;
    height: 480px;
    min-height: 480px;
  }
}

/* === APP LOADING PLACEHOLDER ===
   Mostra "Carregando app Corvino…" sobre o iframe enquanto ele baixa.
   accessibility.js injeta esse div via JS. Some com fade quando iframe
   dispara o evento `load`. */
.app-loading {
  position: absolute;
  top: 28px;          /* abaixo do panel-title */
  left: 0;
  right: 0;
  height: 540px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a1618 0%, #2c2829 100%);
  border: 2px solid #3a3537;
  border-radius: var(--radius);
  z-index: 1;
  pointer-events: none;
  transition: opacity 0.4s ease-out;
}
.app-loading--hidden {
  opacity: 0;
}
.app-loading-icon {
  font-size: 3rem;
  animation: app-loading-pulse 1.4s ease-in-out infinite;
  filter: drop-shadow(0 0 12px rgba(218, 165, 32, 0.4));
}
.app-loading-text {
  margin-top: 16px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.5px;
}
.app-loading-hint {
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--fg-dim);
  font-style: italic;
}
@keyframes app-loading-pulse {
  0%, 100% { transform: scale(1) rotate(-3deg);  opacity: 0.85; }
  50%      { transform: scale(1.12) rotate(3deg); opacity: 1; }
}
@media (max-width: 1099px) {
  .app-loading { height: 480px; }
}
/* Respeita movimento reduzido — pulse mais sutil */
@media (prefers-reduced-motion: reduce) {
  .app-loading-icon { animation: none; opacity: 0.9; }
}

/* === HOWTO STEPS (aula de otimização) === */
.howto-step {
  margin: 32px 0;
  padding: 24px 28px 20px 74px;
  background: var(--bg-soft);
  border: 1px solid #3a3537;
  border-radius: var(--radius);
  position: relative;
}
.howto-step .howto-num {
  position: absolute;
  left: 20px;
  top: 24px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--gold);
  color: #1a1618;
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.howto-step h2 {
  margin: 0 0 12px 0;
  font-size: 1.35rem;
  color: var(--gold);
}
.howto-step p { margin: 10px 0; }
.howto-step ol {
  margin: 12px 0;
  padding-left: 22px;
  color: var(--fg-dim);
}
.howto-step ol li { margin: 6px 0; }
.howto-step .howto-result {
  margin-top: 14px;
  padding: 10px 14px;
  background: rgba(60, 120, 60, 0.12);
  border-left: 3px solid #4a8a4a;
  color: #a8d8a8;
  border-radius: 4px;
  font-size: 0.92rem;
}

/* === CALLOUTS === */
.callout {
  margin: 20px 0;
  padding: 14px 18px;
  border-radius: 6px;
  border-left: 3px solid var(--gold);
  background: var(--bg-soft);
  font-size: 0.95rem;
  line-height: 1.55;
}
.callout-warning {
  border-left-color: #c78b2a;
  background: rgba(199, 139, 42, 0.08);
}
.callout-info {
  border-left-color: #5b8bb5;
  background: rgba(91, 139, 181, 0.08);
}
.callout a { color: var(--gold); }

/* === kbd === */
kbd {
  display: inline-block;
  padding: 1px 7px;
  margin: 0 2px;
  border: 1px solid #4a4245;
  border-bottom-width: 2px;
  border-radius: 4px;
  background: #252022;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.82rem;
  color: #d4c9a8;
}

/* === MANUAL — blocos de controle === */
.control-block {
  margin: 20px 0;
  padding: 18px 22px;
  background: var(--bg-soft);
  border: 1px solid #3a3537;
  border-radius: var(--radius);
}
.control-block .control-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}
.control-block p { margin: 8px 0; }
.control-block ul, .control-block ol {
  margin: 8px 0;
  padding-left: 22px;
  color: var(--fg-dim);
}
.control-block ul li, .control-block ol li { margin: 4px 0; }
.control-block .control-tip {
  margin-top: 12px;
  padding: 8px 12px;
  background: rgba(224, 184, 79, 0.08);
  border-left: 3px solid var(--gold);
  color: #d4c9a8;
  border-radius: 4px;
  font-size: 0.9rem;
}

/* Figura com foto do painel */
.manual-figure {
  margin: 24px 0;
  text-align: center;
}
.manual-figure .manual-panel {
  max-width: 360px;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid #3a3537;
  background: #1a1618;
}
.manual-figure figcaption {
  margin-top: 10px;
  color: var(--fg-dim);
  font-size: 0.88rem;
  font-style: italic;
}

/* === Página de seleção de modelo (Aula 5) === */
.lesson-layout--full {
  grid-template-columns: 1fr !important;
  max-width: 960px;
  margin: 0 auto;
}
.model-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 32px 0;
}
@media (max-width: 720px) {
  .model-grid { grid-template-columns: 1fr; }
}
.model-card {
  background: var(--bg-soft);
  border: 1px solid #3a3537;
  border-radius: var(--radius);
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.model-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: var(--shadow);
  text-decoration: none;
}
.model-card h2 {
  margin: 0;
  color: var(--gold);
  font-size: 1.6rem;
}
.model-img-wrap {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #1a1618;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}
.model-img-wrap img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  z-index: 2;
  position: relative;
}
.model-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 4px;
  opacity: 0.3;
  z-index: 1;
}
.model-hint {
  color: var(--fg-dim);
  font-size: 0.92rem;
  line-height: 1.5;
}
.model-feats {
  margin: 4px 0;
  padding-left: 20px;
  color: var(--fg-dim);
  font-size: 0.88rem;
}
.model-feats li { margin: 3px 0; }
.model-cta {
  margin-top: auto;
  color: var(--gold);
  font-weight: 600;
  font-size: 0.95rem;
  padding-top: 8px;
  border-top: 1px solid #3a3537;
}

/* === Notação musical (aula mão direita / esquerda) === */
.note-grid {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 16px 0;
  justify-content: center;
}
.note {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  padding: 10px 14px;
  background: var(--bg-soft);
  border: 1px solid var(--gold);
  border-radius: 6px;
  font-weight: 700;
  color: var(--gold);
  font-size: 1.05rem;
}

.fingering {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 16px 0;
  justify-content: center;
}
.fingering > div {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-soft);
  border-radius: 6px;
  border: 1px solid #3a3537;
  font-size: 0.95rem;
}
.fnum {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--gold);
  color: #1a1618;
  border-radius: 50%;
  font-weight: 800;
  font-size: 0.95rem;
}

.scale-box {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 20px 0;
  justify-content: center;
  padding: 16px;
  background: rgba(224, 184, 79, 0.05);
  border: 1px dashed var(--gold);
  border-radius: 8px;
}
.scale-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.scale-step .note { min-width: 58px; font-size: 1.15rem; padding: 12px; }

/* === Fileiras de baixo (aula mão esquerda) === */
.bass-rows {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 20px 0;
}
.bass-row-info {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 16px;
  background: var(--bg-soft);
  border: 1px solid #3a3537;
  border-radius: 8px;
}
.bass-row-info p { margin: 4px 0 0 0; color: var(--fg-dim); font-size: 0.92rem; }
.bass-row-info strong { color: var(--gold); }
.row-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--gold);
  color: #1a1618;
  font-weight: 800;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.bass-row-bass .row-badge { background: #d94a4a; color: #fff; }

/* Padrão rítmico (bum-tchim-tchim) */
.pattern-box {
  display: flex;
  gap: 12px;
  margin: 20px 0;
  justify-content: center;
  flex-wrap: wrap;
}
.pattern-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 18px;
  background: rgba(224, 184, 79, 0.06);
  border: 1px solid var(--gold);
  border-radius: 8px;
  min-width: 130px;
}
.pattern-step .beat {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gold);
  color: #1a1618;
  font-weight: 800;
}
.pattern-step .action {
  color: var(--fg);
  font-size: 0.9rem;
  font-weight: 600;
}

/* === Foto do autor (Quem sou eu) === */
.author-photo {
  float: right;
  margin: 0 0 16px 24px;
  width: 220px;
  text-align: center;
}
.author-photo img {
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--gold);
  display: block;
}
.author-photo .author-placeholder {
  display: none;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 3px solid var(--gold);
  background: var(--bg-soft);
  color: var(--gold);
  font-weight: 800;
  font-size: 3.5rem;
  letter-spacing: 2px;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}
.author-photo.no-img img { display: none; }
.author-photo.no-img .author-placeholder { display: flex; }
.author-photo figcaption {
  margin-top: 8px;
  color: var(--fg-dim);
  font-size: 0.85rem;
  font-style: italic;
}
@media (max-width: 720px) {
  .author-photo { float: none; margin: 16px auto; }
}

/* === Partitura (SVG) === */
.score-figure {
  margin: 24px 0;
  text-align: center;
}
.score-svg {
  width: 100%;
  max-width: 720px;
  height: auto;
  display: block;
  margin: 0 auto;
  background: #1a1618;
  border: 1px solid #3a3537;
  border-radius: 8px;
  padding: 8px;
}
.score-figure figcaption {
  margin-top: 10px;
  color: var(--fg-dim);
  font-size: 0.9rem;
  font-style: italic;
}

/* Mnemônico — frases pra decorar notas */
.mnemonic {
  margin: 16px 0;
  padding: 14px 20px;
  background: rgba(224, 184, 79, 0.08);
  border: 1px dashed var(--gold);
  border-radius: 8px;
  text-align: center;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--fg-dim);
}
.mnemonic .m-word {
  color: var(--gold);
  font-weight: 700;
  background: rgba(224, 184, 79, 0.15);
  padding: 1px 4px;
  border-radius: 3px;
}

/* === Compass cards (2/4, 3/4, 4/4) === */
.compass-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0;
}
@media (max-width: 720px) {
  .compass-grid { grid-template-columns: 1fr; }
}
.compass-card {
  padding: 18px;
  background: var(--bg-soft);
  border: 1px solid #3a3537;
  border-radius: 8px;
  text-align: center;
}
.compass-card h3 {
  margin: 8px 0 4px 0;
  color: var(--gold);
  font-size: 1.3rem;
}
.compass-card p {
  margin: 6px 0;
  color: var(--fg-dim);
  font-size: 0.9rem;
  line-height: 1.4;
}
.compass-card .compass-beat {
  color: var(--fg);
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  padding-bottom: 8px;
  border-bottom: 1px solid #3a3537;
}
.compass-num {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  line-height: 0.9;
  color: var(--gold);
  font-family: 'Times New Roman', serif;
  font-weight: 800;
  font-size: 2rem;
}
.compass-num .n-top { border-bottom: 2px solid var(--gold); padding: 0 8px; }
.compass-num .n-bot { padding: 0 8px; }

/* === Score player (botão ouvir + highlight da nota ativa) === */
.score-play-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 12px auto 0;
  padding: 8px 18px;
  background: var(--gold);
  color: #1a1618;
  border: none;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}
.score-play-btn:hover:not(:disabled) { transform: translateY(-1px); }
.score-play-btn:disabled {
  opacity: 0.4;
  cursor: wait;
  background: #887a50;
}
.score-play-btn.playing {
  background: #ff9060;
  color: #1a1618;
}
.score-play-wrap, .synth-play-wrap {
  text-align: center;
  margin: 8px 0 20px;
}

/* Destaque na nota quando está soando */
.score-note-active {
  fill: #ff9060 !important;
  stroke: #ff9060 !important;
  filter: drop-shadow(0 0 6px rgba(255, 144, 96, 0.8));
  transition: fill 0.05s, stroke 0.05s;
}

/* === SYNTHESIA MODE — overlay direto na partitura === */
/* O modo Synthesia atua sobre a partitura SVG existente: uma bolinha
   (cursor) indica qual nota tocar, e cada nota muda de cor conforme o
   aluno acerta/erra. Sem stage separado. */

/* Cursor de tempo — linha vertical estilo Yousician, injetada no SVG da
   partitura. Move continuamente em X conforme o tempo passa. */
.synth-cursor {
  animation: synth-cursor-pulse 0.8s ease-in-out infinite;
}
@keyframes synth-cursor-pulse {
  0%, 100% { opacity: 0.85; }
  50%      { opacity: 1; }
}

/* Bolinha pulsante — fica sobre a próxima nota a tocar (alvo do aluno).
   Pulsa de tamanho e opacidade pra chamar atenção. */
.synth-ball {
  animation: synth-ball-pulse 0.6s ease-in-out infinite;
}
@keyframes synth-ball-pulse {
  0%, 100% {
    r: 11;
    opacity: 0.85;
    stroke-width: 2.5;
  }
  50% {
    r: 14;
    opacity: 1;
    stroke-width: 3;
  }
}
/* Nota fantasma — quando aluno toca nota que não existe na partitura,
   cria um ellipse vermelho temporário NA POSIÇÃO CORRETA do staff.
   Aluno vê onde aquela nota ESTARIA se a peça tivesse. */
.synth-ghost-note {
  fill: #d94a4a;
  stroke: #d94a4a;
  stroke-width: 2;
  filter: drop-shadow(0 0 8px rgba(217, 74, 74, 0.95))
          drop-shadow(0 0 14px rgba(217, 74, 74, 0.6));
  pointer-events: none;
  animation: synth-ghost-fade 0.6s ease-out forwards;
  transform-origin: center;
  transform-box: fill-box;
}
.synth-ghost-ledger {
  stroke: #d94a4a;
  stroke-width: 1.8;
  pointer-events: none;
  animation: synth-ghost-fade 0.6s ease-out forwards;
}

/* Fantasma de baixo (ME) — cell vermelha temporária na área do bass
   stave com nome do acorde dentro. Mesma anim fade do MD. */
.synth-ghost-bass {
  pointer-events: none;
  animation: synth-ghost-fade 0.6s ease-out forwards;
}
.synth-ghost-bass-shape {
  fill: #d94a4a;
  stroke: #1a1618;
  stroke-width: 2;
  filter: drop-shadow(0 0 8px rgba(217, 74, 74, 0.95))
          drop-shadow(0 0 14px rgba(217, 74, 74, 0.6));
}
.synth-ghost-bass-label {
  fill: #1a1618;
  font-family: sans-serif;
  font-size: 10px;
  font-weight: 700;
}

@keyframes synth-ghost-fade {
  0%   { opacity: 0; }
  20%  { opacity: 1; }
  100% { opacity: 0; }
}

/* Tecla errada — bolinha pulsa VERMELHA brevemente (350ms). Sobrepõe
   o pulso normal por causa da especificidade + animation override. */
.synth-ball.synth-ball-wrong {
  animation: synth-ball-wrong 0.35s ease-out;
  stroke: #d94a4a !important;
  filter: drop-shadow(0 0 10px rgba(217, 74, 74, 0.9))
          drop-shadow(0 0 16px rgba(217, 74, 74, 0.6)) !important;
}
@keyframes synth-ball-wrong {
  0%   { r: 14; stroke-width: 4; }
  50%  { r: 18; stroke-width: 5; }
  100% { r: 11; stroke-width: 2.5; }
}


/* Rótulo DENTRO da bolinha — nome da nota (Dó, Ré, Mi...).
   Confirma qual nota o aluno deve tocar (bate com a partitura). */
.synth-key-label {
  font-family: inherit;
  paint-order: stroke;
  stroke: #ffd060;
  stroke-width: 1.5;
}
/* Hint ACIMA da bolinha — letra da tecla (G, H, J...).
   Diz como tocar (qual tecla do teclado apertar). */
.synth-key-hint {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  paint-order: stroke;
  stroke: rgba(0, 0, 0, 0.85);
  stroke-width: 3;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.6));
}

/* Dedilhado da MD — números 1-5 acima das notas (1=polegar a
   5=mínimo). Cor laranja pra distinguir das notas (douradas) e
   nomes (creme). Stroke escuro melhora legibilidade.
   Quando finger-md tem [data-note], a regra Boomwhackers abaixo
   sobrescreve a cor padrão (cores por nota). */
.finger-md text,
text.finger-md {
  font-family: sans-serif;
  font-weight: 700;
  font-size: 11px;
  fill: #d97a3a;
  text-anchor: middle;
  paint-order: stroke;
  stroke: rgba(26, 22, 24, 0.85);
  stroke-width: 0.8;
}

/* === Sistema Boomwhackers GLOBAL — cores das notas musicais ===
   Aplica-se a qualquer <text> com data-note="Dó/Ré/Mi/Fá/Sol/Lá/Si".
   Sustenidos herdam a cor da natural. Funciona em note-labels (Mi/Sol/etc)
   e em finger-md (1-5) quando tem o atributo. */
text[data-note="Dó"]  { fill: #ff6b6b; }  /* vermelho */
text[data-note="Ré"]  { fill: #ff9944; }  /* laranja */
text[data-note="Mi"]  { fill: #ffd84d; }  /* amarelo */
text[data-note="Fá"]  { fill: #b8e060; }  /* verde-limão */
text[data-note="Sol"] { fill: #66dd88; }  /* verde */
text[data-note="Lá"]  { fill: #5dade2; }  /* azul */
text[data-note="Si"]  { fill: #c98ce8; }  /* roxo */
/* Stroke escuro nos labels pra legibilidade contra fundo */
text.note-label {
  paint-order: stroke;
  stroke: rgba(26, 22, 24, 0.85);
  stroke-width: 0.6;
  font-weight: 700;
}

/* Estados das notas durante o jogo (ellipses/rects/circles ganham
   via JS). Glow forte pra ficar visível mesmo em elementos que já
   têm cor (rects do baixo com fill harmônica). */
.synth-preview {
  fill: #ffd060 !important;
  stroke: #ffd060 !important;
  filter:
    drop-shadow(0 0 8px rgba(255, 208, 96, 1))
    drop-shadow(0 0 14px rgba(255, 208, 96, 0.7));
  transition: fill 0.1s, stroke 0.1s, filter 0.1s;
}
.synth-hit {
  fill: #5ab45a !important;
  stroke: #5ab45a !important;
  filter:
    drop-shadow(0 0 8px rgba(120, 220, 120, 1))
    drop-shadow(0 0 14px rgba(120, 220, 120, 0.7));
  transition: fill 0.1s, stroke 0.1s, filter 0.1s;
}
.synth-miss {
  fill: #d94a4a !important;
  stroke: #d94a4a !important;
  filter:
    drop-shadow(0 0 8px rgba(255, 100, 100, 1))
    drop-shadow(0 0 14px rgba(255, 100, 100, 0.7));
  transition: fill 0.1s, stroke 0.1s, filter 0.1s;
}

/* Botão Synthesia — cor diferente pra destacar do Lento/Normal */
.score-play-btn.synth-trigger {
  background: linear-gradient(180deg, #b8632a, #8a4a1f);
  border-color: #d97a3a;
  transition: box-shadow 0.08s, transform 0.08s;
}
.score-play-btn.synth-trigger:hover {
  background: linear-gradient(180deg, #d97a3a, #b8632a);
}
.score-play-btn.synth-trigger.playing {
  background: linear-gradient(180deg, #d94a4a, #b03030);
  border-color: #ff6060;
}
/* Feedback visual quando o listener captura uma tecla mapeada */
.score-play-btn.synth-trigger.synth-key-flash {
  box-shadow: 0 0 0 4px rgba(255, 208, 96, 0.85),
              0 0 14px rgba(255, 208, 96, 0.7);
  transform: scale(1.04);
}

/* === Toolbar do player (topo da partitura) === */
/* JS injeta como primeiro filho de .score-figure: play + BPM control.
   Cada attachScorePlayer adiciona uma row. */
.score-toolbar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 0 14px 0;
  padding: 12px 14px;
  background: rgba(218, 165, 32, 0.06);
  border: 1px solid rgba(218, 165, 32, 0.25);
  border-radius: 10px;
}

.score-toolbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
/* Row de OPÇÕES — sempre a última. Contém os toggles MD/ME (claves)
   e o botão Synthesia (se existir). Compartilhado por todos os players
   da figure (Lento, Normal, etc). Borda superior tracejada pra separar
   visualmente das play rows. */
.score-toolbar-row.score-toolbar-options {
  justify-content: center;
  padding-top: 10px;
  margin-top: 4px;
  border-top: 1px dashed rgba(218, 165, 32, 0.22);
  gap: 18px;
}

/* Play maior e mais legível dentro da toolbar */
.score-toolbar .score-play-main {
  margin: 0;
  padding: 10px 22px;
  font-size: 1rem;
  min-height: 42px;
  flex: 1 1 auto;
}

.score-toolbar .score-play-main.count-in,
.score-play-btn.synth-trigger.count-in {
  background: #d4a740;
  animation: count-in-pulse 0.5s ease-in-out infinite alternate;
}

@keyframes count-in-pulse {
  from { opacity: 0.85; }
  to { opacity: 1; transform: scale(1.02); }
}

/* Grupo BPM */
.score-bpm {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid #3a3537;
  border-radius: 999px;
  padding: 4px 6px;
}

.score-bpm-label {
  color: var(--fg-dim);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 0 6px 0 8px;
  text-transform: uppercase;
}

.score-bpm-btn {
  background: transparent;
  border: 1px solid #3a3537;
  color: var(--gold);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  font-weight: 900;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}
.score-bpm-btn:hover:not(:disabled) {
  background: rgba(218, 165, 32, 0.2);
  border-color: var(--gold);
}
.score-bpm-btn:active:not(:disabled) { transform: translateY(1px); }
.score-bpm-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.score-bpm-display {
  background: transparent;
  border: none;
  color: var(--fg);
  font-size: 1.1rem;
  font-weight: 800;
  font-family: inherit;
  cursor: pointer;
  min-width: 44px;
  text-align: center;
  padding: 4px 6px;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
}
.score-bpm-display:hover:not(:disabled) {
  background: rgba(218, 165, 32, 0.15);
}
/* Indica visualmente quando o aluno mudou o BPM do padrão */
.score-bpm-display.modified {
  color: var(--gold);
}
.score-bpm-display.modified::after {
  content: ' ↻';
  font-size: 0.7rem;
  opacity: 0.7;
}
.score-bpm-display:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* === Toggle de mãos automáticas (MD / ME) === */
/* Aluno pode mutar uma mão pra estudar a outra solo. Quando muta, o
   som da mão para mas a partitura continua acendendo as notas como
   guia visual. Estado active = toca; sem active = mudo. */
.score-hands {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  background: rgba(218, 165, 32, 0.07);
  border: 1px solid rgba(218, 165, 32, 0.2);
  border-radius: 8px;
}
.score-hands-label {
  font-size: 0.78rem;
  color: #c8bfa8;
  margin-right: 2px;
  letter-spacing: 0.02em;
}
.score-hand-btn {
  padding: 2px 10px 4px;
  font-weight: 600;
  font-family: inherit;
  background: rgba(40, 30, 25, 0.6);
  color: #806a4a;
  border: 1px solid rgba(218, 165, 32, 0.25);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s, box-shadow 0.12s;
  position: relative;
  min-width: 42px;
  text-align: center;
  line-height: 1;
}
/* Clave de Sol (MD) e clave de Fá (ME) — mesmas glifos da partitura.
   Fonte serif renderiza os caracteres unicode musicais (𝄞 𝄢). */
.score-hand-btn .clef-glyph {
  font-family: "Bravura", "Bravura Text", "Cambria Math",
               "Sergoe UI Symbol", serif;
  display: inline-block;
  line-height: 1;
}
.score-hand-btn .clef-treble {
  font-size: 1.55rem;
  vertical-align: -0.18em;  /* clave de Sol é alta — desce um pouco */
}
.score-hand-btn .clef-bass {
  font-size: 1.4rem;
  vertical-align: -0.05em;  /* clave de Fá é mais compacta */
}
/* Util pra acessibilidade — texto invisível mas lido por screen readers */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.score-hand-btn:hover {
  background: rgba(60, 45, 35, 0.7);
  border-color: rgba(218, 165, 32, 0.5);
}
.score-hand-btn.active {
  background: linear-gradient(180deg, #b8632a, #8a4a1f);
  color: #fff;
  border-color: #d97a3a;
  box-shadow: 0 0 0 1px rgba(218, 165, 32, 0.3),
              0 1px 4px rgba(0, 0, 0, 0.4);
}
.score-hand-btn.active:hover {
  background: linear-gradient(180deg, #d97a3a, #b8632a);
}
/* Indicador visual "muted" — overlay riscado pra deixar claro */
.score-hand-btn:not(.active)::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 14%;
  right: 14%;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}

/* Em telas estreitas, empilha play + bpm + hands */
@media (max-width: 720px) {
  .score-toolbar-row {
    flex-direction: column;
    align-items: stretch;
  }
  .score-toolbar .score-play-main {
    width: 100%;
  }
  .score-bpm,
  .score-hands {
    align-self: center;
  }
}

/* === Quiz interativo (mini-check de fim de módulo) === */
.quiz {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 24px 0;
}
.quiz-q {
  padding: 18px 20px;
  background: var(--bg-soft);
  border: 1px solid #3a3537;
  border-radius: 8px;
}
.quiz-question {
  margin: 0 0 12px 0;
  color: var(--fg);
  font-size: 1.02rem;
  line-height: 1.4;
}
.quiz-alt {
  display: block;
  width: 100%;
  text-align: left;
  padding: 10px 14px;
  margin: 6px 0;
  background: #1a1618;
  color: var(--fg);
  border: 1px solid #3a3537;
  border-radius: 6px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  font-family: inherit;
}
.quiz-alt:hover:not(:disabled) {
  background: #252022;
  border-color: var(--gold);
}
.quiz-alt:disabled { cursor: default; }
.quiz-alt.alt-correct {
  background: rgba(90, 180, 90, 0.18);
  border-color: #5ab45a;
  color: #b8e8b8;
}
.quiz-alt.alt-wrong {
  background: rgba(217, 74, 74, 0.18);
  border-color: #d94a4a;
  color: #f0b8b8;
}
.quiz-feedback {
  margin-top: 10px;
  padding: 0;
  color: var(--fg-dim);
  font-size: 0.9rem;
  line-height: 1.5;
}
.quiz-feedback .fb-ok { color: #6bd06b; font-weight: 700; }
.quiz-feedback .fb-err { color: #ff7f7f; font-weight: 700; }
.quiz-score {
  padding: 10px 14px;
  text-align: center;
  color: var(--gold);
  font-weight: 700;
  border-top: 1px dashed #3a3537;
  margin-top: 8px;
}

/* === nav-links (fim de aula) === */
.nav-links {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid #3a3537;
  display: flex;
  gap: 12px;
}
.btn-secondary {
  padding: 10px 18px;
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.92rem;
  transition: background 0.2s;
}
.btn-secondary:hover {
  background: rgba(224, 184, 79, 0.1);
  text-decoration: none;
}

/* === REPERTÓRIO GRID (Módulo 9) === */
.repertorio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  margin: 20px 0;
}
.rep-card {
  display: block;
  padding: 14px 16px;
  background: var(--bg-soft);
  border: 1px solid #3a3537;
  border-left: 3px solid var(--gold);
  border-radius: 8px;
  text-decoration: none;
  color: var(--fg);
  transition: border-color 0.2s, transform 0.2s;
  position: relative;
}
.rep-card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  text-decoration: none;
}
.rep-num {
  position: absolute;
  top: 10px;
  right: 12px;
  color: var(--gold);
  font-size: 1.4rem;
  font-weight: 700;
  opacity: 0.6;
}
.rep-title {
  color: var(--gold);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
  padding-right: 28px;
}
.rep-meta {
  color: var(--fg-dim);
  font-size: 0.78rem;
  margin-bottom: 6px;
  font-style: italic;
}
.rep-desc {
  color: var(--fg);
  font-size: 0.88rem;
  line-height: 1.4;
}

/* ============================================ */
/* === PAINEL DE ACESSIBILIDADE (a11y-panel) === */
/* ============================================ */
/* Painel colapsado: aparece como botão pequeno (ícone ⚙) no canto. */
/* Click → expande os controles. Click fora → colapsa. */
#a11y-panel {
  position: fixed;
  top: 130px;            /* abaixo do header sticky */
  right: 14px;
  z-index: 999;          /* abaixo do header (z=100) só quando overlap, mas visível */
  font-family: 'Segoe UI', system-ui, sans-serif;
}

/* O ícone ⚙ — sempre visível */
.a11y-toggle-icon {
  background: rgba(35, 31, 32, 0.92);
  border: 1.5px solid var(--gold);
  color: var(--gold);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
  transition: transform 0.15s, background 0.15s;
  font-family: inherit;
}
.a11y-toggle-icon:hover {
  background: var(--gold);
  color: #1a1618;
  transform: rotate(60deg);
}

/* O painel de controles — escondido por padrão */
.a11y-content {
  display: none;
  background: rgba(35, 31, 32, 0.95);
  border: 1px solid var(--gold);
  border-radius: 10px;
  padding: 10px 12px;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  margin-top: 6px;
  min-width: 180px;
}

#a11y-panel.a11y-open .a11y-content {
  display: flex;
}
#a11y-panel.a11y-open .a11y-toggle-icon {
  background: var(--gold);
  color: #1a1618;
}

.a11y-section {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.a11y-section-label {
  font-size: 0.7rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  width: 100%;
  margin-bottom: 2px;
}

.a11y-btn {
  background: var(--bg-soft);
  border: 1px solid #3a3537;
  color: var(--fg);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
  transition: background 0.15s, border-color 0.15s;
  min-height: 36px;
  min-width: 36px;
  font-family: inherit;
}
.a11y-btn:hover {
  background: rgba(218, 165, 32, 0.15);
  border-color: var(--gold);
}
.a11y-btn:active {
  transform: translateY(1px);
}

.a11y-zoom {
  font-weight: 700;
}
.a11y-zoom-plus {
  font-size: 0.95rem;
}

.a11y-toggle-app {
  font-size: 0.78rem;
  width: 100%;
  text-align: center;
  padding: 8px 10px;
}

/* Em telas pequenas, painel vai pro rodapé direito */
@media (max-width: 700px) {
  #a11y-panel {
    top: auto;
    bottom: 14px;
    right: 8px;
  }
  .a11y-content {
    min-width: 160px;
  }
  .a11y-btn { padding: 4px 8px; font-size: 0.75rem; min-height: 32px; }
}

/* ============================================================
   BOTÃO REPORTAR BUG (debug-report.js)
   FAB discreto no canto inferior esquerdo. Aluno aperta pra
   abrir um modal com console + infos do sistema, pode copiar
   ou mandar pelo WhatsApp.
   ============================================================ */
.dbg-fab {
  position: fixed;
  bottom: 14px;
  left: 14px;
  z-index: 9998;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(218, 165, 32, 0.45);
  background: rgba(26, 22, 24, 0.85);
  color: #ffd060;
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0.55;
  transition: opacity 0.15s, transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.dbg-fab:hover {
  opacity: 1;
  transform: scale(1.08);
  box-shadow: 0 0 0 3px rgba(255, 208, 96, 0.25),
              0 4px 14px rgba(0, 0, 0, 0.5);
}
.dbg-fab:focus-visible {
  outline: 2px solid #ffd060;
  outline-offset: 3px;
  opacity: 1;
}
@media (max-width: 700px) {
  .dbg-fab {
    bottom: 10px;
    left: 10px;
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }
}

/* Modal */
.dbg-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: dbg-fade-in 0.15s ease-out;
}
@keyframes dbg-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.dbg-modal-bg {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(2px);
}
.dbg-modal-card {
  position: relative;
  width: min(680px, 92vw);
  max-height: 88vh;
  overflow: auto;
  background: #1a1618;
  border: 1px solid rgba(218, 165, 32, 0.35);
  border-radius: 12px;
  padding: 22px 22px 18px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  color: #f0e6d2;
}
.dbg-title {
  margin: 0 0 8px;
  font-size: 1.15rem;
  color: #ffd060;
}
.dbg-help {
  margin: 0 0 14px;
  font-size: 0.88rem;
  line-height: 1.4;
  color: #c8bfa8;
}
.dbg-help b { color: #ffd060; }
.dbg-label {
  margin: 14px 0 4px;
  font-size: 0.8rem;
  color: #9c947f;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.dbg-user-msg {
  width: 100%;
  min-height: 60px;
  padding: 10px 12px;
  background: #0f0d0f;
  border: 1px solid rgba(218, 165, 32, 0.25);
  border-radius: 8px;
  color: #f0e6d2;
  font-family: inherit;
  font-size: 0.92rem;
  resize: vertical;
  box-sizing: border-box;
}
.dbg-user-msg:focus {
  outline: none;
  border-color: #ffd060;
  box-shadow: 0 0 0 2px rgba(255, 208, 96, 0.18);
}
.dbg-textarea {
  width: 100%;
  height: 220px;
  padding: 10px 12px;
  background: #0a0908;
  border: 1px solid rgba(218, 165, 32, 0.18);
  border-radius: 8px;
  color: #d0c8b0;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.4;
  resize: vertical;
  box-sizing: border-box;
  white-space: pre;
  overflow: auto;
}
.dbg-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.dbg-btn {
  padding: 9px 16px;
  background: #2a2426;
  border: 1px solid rgba(218, 165, 32, 0.3);
  border-radius: 7px;
  color: #f0e6d2;
  cursor: pointer;
  font-size: 0.92rem;
  font-family: inherit;
  text-decoration: none;
  display: inline-block;
  transition: background 0.12s, border-color 0.12s;
}
.dbg-btn:hover {
  background: #3a3032;
  border-color: rgba(218, 165, 32, 0.55);
}
.dbg-btn-primary {
  background: linear-gradient(180deg, #b8632a, #8a4a1f);
  border-color: #d97a3a;
  color: #fff;
}
.dbg-btn-primary:hover {
  background: linear-gradient(180deg, #d97a3a, #b8632a);
}
.dbg-btn-wpp {
  background: linear-gradient(180deg, #25d366, #1aa84d);
  border-color: #25d366;
  color: #0f3320;
  font-weight: 600;
}
.dbg-btn-wpp:hover {
  background: linear-gradient(180deg, #2bea73, #25d366);
}
@media (max-width: 700px) {
  .dbg-modal-card {
    width: 96vw;
    padding: 16px 14px;
  }
  .dbg-textarea { height: 180px; font-size: 0.72rem; }
  .dbg-btn { width: 100%; text-align: center; }
}