/* ============================================================
   TABUADA DESTRAVADA — style.css
   Design premium com glassmorphism, responsivo e acessível
   ============================================================ */

/* ==================== VARIÁVEIS CSS ==================== */
:root {
  /* Paleta principal */
  --primary: #6C5CE7;
  --primary-light: #a29bfe;
  --primary-dark: #5341d6;
  --secondary: #00b894;
  --secondary-light: #55efc4;
  --accent-yellow: #fdcb6e;
  --accent-orange: #e17055;
  --accent-red: #d63031;
  --accent-red-light: #ff7675;

  /* Cores de sinalização */
  --green: #00b894;
  --green-bg: rgba(0, 184, 148, 0.15);
  --yellow: #fdcb6e;
  --yellow-bg: rgba(253, 203, 110, 0.15);
  --red: #d63031;
  --red-bg: rgba(214, 48, 49, 0.15);
  --gray: #b2bec3;
  --gray-bg: rgba(178, 190, 195, 0.15);

  /* Tema claro */
  --bg-primary: #f0f0f7;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.7);
  --text-primary: #2d3436;
  --text-secondary: #636e72;
  --text-muted: #b2bec3;
  --border: rgba(0, 0, 0, 0.08);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(255, 255, 255, 0.3);
  --sidebar-bg: rgba(255, 255, 255, 0.85);
  --input-bg: rgba(255, 255, 255, 0.8);
  --gradient-bg: linear-gradient(135deg, #f0f0f7 0%, #e8e8f0 50%, #f5f0ff 100%);

  /* Tipografia */
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;

  /* Espaçamento */
  --sidebar-width: 240px;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;

  /* Transições */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s ease;
}

/* ==================== TEMA ESCURO ==================== */
[data-theme="dark"] {
  --bg-primary: #0a0a1a;
  --bg-secondary: #151528;
  --bg-card: rgba(25, 25, 50, 0.7);
  --text-primary: #f0f0f7;
  --text-secondary: #a0a0b8;
  --text-muted: #555570;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(25, 25, 50, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --sidebar-bg: rgba(15, 15, 30, 0.92);
  --input-bg: rgba(25, 25, 50, 0.8);
  --gradient-bg: linear-gradient(135deg, #0a0a1a 0%, #12122a 50%, #1a0a2e 100%);
}

/* ==================== ALTO CONTRASTE ==================== */
[data-high-contrast="true"] {
  --text-primary: #000000;
  --text-secondary: #333333;
  --border: rgba(0, 0, 0, 0.3);
}

[data-theme="dark"][data-high-contrast="true"] {
  --text-primary: #ffffff;
  --text-secondary: #e0e0e0;
  --border: rgba(255, 255, 255, 0.3);
}

/* ==================== REABILITAÇÃO: VISibilidade no tema escuro ==================== */
[data-theme="dark"] .villain-card {
  background: rgba(30, 30, 60, 0.85);
  border-color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .villain-card.is-red {
  border-color: #ff6b6b;
  box-shadow: 0 0 20px rgba(255, 107, 107, 0.25);
  animation: pulse-border-dark 2s ease-in-out infinite;
}

@keyframes pulse-border-dark {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.3); }
  50% { box-shadow: 0 0 24px 6px rgba(255, 107, 107, 0.35); }
}

[data-theme="dark"] .villain-fact {
  color: #ffffff;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .villain-status {
  color: #b0b0cc;
}

[data-theme="dark"] .villain-status.rehabilitated {
  color: #55efc4;
}

[data-theme="dark"] .villain-emoji {
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.4));
}

/* Alto contraste escuro: máximo destaque */
[data-theme="dark"][data-high-contrast="true"] .villain-card {
  background: #000000;
  border-color: #ffffff;
}

[data-theme="dark"][data-high-contrast="true"] .villain-card.is-red {
  border-color: #ff4444;
  box-shadow: 0 0 24px rgba(255, 68, 68, 0.5);
}

[data-theme="dark"][data-high-contrast="true"] .villain-fact {
  color: #ffffff;
  text-shadow: none;
  font-size: 1.8rem;
}

[data-theme="dark"][data-high-contrast="true"] .villain-status {
  color: #cccccc;
}

[data-theme="dark"][data-high-contrast="true"] .villain-status.rehabilitated {
  color: #00ff88;
}

/* Tema claro: melhorar também o vermelho pulsante */
[data-theme="light"] .villain-card.is-red {
  border-color: #e74c3c;
  box-shadow: 0 0 16px rgba(231, 76, 60, 0.2);
}

[data-theme="light"][data-high-contrast="true"] .villain-card {
  border-color: #333333;
  border-width: 3px;
}

[data-theme="light"][data-high-contrast="true"] .villain-card.is-red {
  border-color: #cc0000;
  box-shadow: 0 0 20px rgba(204, 0, 0, 0.3);
}

[data-theme="light"][data-high-contrast="true"] .villain-fact {
  color: #000000;
}

/* Passos da reabilitação: mesmo tratamento */
[data-theme="dark"] .rehab-step {
  background: rgba(30, 30, 60, 0.85);
  border-color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .rehab-step .math-display {
  color: #ffffff;
}

[data-theme="dark"][data-high-contrast="true"] .rehab-step {
  background: #000000;
  border-color: #ffffff;
  border-width: 2px;
}

[data-theme="dark"][data-high-contrast="true"] .rehab-step .math-display {
  color: #ffffff;
  font-size: 2.2rem;
}

/* ==================== RESET & BASE ==================== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--gradient-bg);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

/* Fundo animado com blobs */
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  z-index: -1;
  animation: float 20s ease-in-out infinite;
}

body::before {
  width: 500px;
  height: 500px;
  background: var(--primary);
  top: -100px;
  right: -100px;
}

body::after {
  width: 400px;
  height: 400px;
  background: var(--secondary);
  bottom: -100px;
  left: -100px;
  animation-delay: -10s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ==================== BARRA DE ACESSIBILIDADE ==================== */
.a11y-bar {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  gap: 4px;
  padding: 6px 12px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-bottom-left-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  border-top: none;
  border-left: none;
}

.a11y-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.a11y-btn:hover, .a11y-btn:focus {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: scale(1.05);
}

.a11y-btn:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

/* ==================== SIDEBAR ==================== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  backdrop-filter: blur(30px);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform var(--transition);
  overflow-y: auto;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
}

.logo-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.3;
}

.logo-text strong {
  color: var(--primary);
  font-size: var(--font-size-lg);
}

.nav-list {
  list-style: none;
  padding: 12px 10px;
  flex: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  background: var(--glass-bg);
  color: var(--text-primary);
  transform: translateX(4px);
}

.nav-link.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

.nav-link:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Áudio controls na sidebar */
.audio-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
}

.audio-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--glass-bg);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.audio-btn:hover {
  background: var(--primary);
  color: #fff;
  transform: scale(1.1);
}

.audio-btn svg {
  width: 16px;
  height: 16px;
}

.volume-display {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  min-width: 35px;
  text-align: center;
}

/* Theme toggle */
.theme-toggle {
  margin: 12px 16px;
  padding: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--glass-bg);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--accent-yellow);
  color: #2d3436;
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

/* ==================== HAMBURGER ==================== */
.hamburger {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10000;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 1px solid rgba(192,138,40,0.4);
  background: rgba(22,27,46,0.95);
  backdrop-filter: blur(20px);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
  margin: 0;
  -webkit-appearance: none;
  appearance: none;
  line-height: 1;
}

.hamburger span {
  display: block;
  width: 22px;
  min-width: 22px;
  height: 2px;
  min-height: 2px;
  background: #f0f0f7;
  border-radius: 2px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 90;
  opacity: 0;
  transition: opacity var(--transition);
}

.sidebar-overlay.active {
  display: block;
  opacity: 1;
}

/* ==================== CONTEÚDO PRINCIPAL ==================== */
.main-content {
  margin-left: var(--sidebar-width);
  padding: 32px 40px 60px;
  min-height: 100vh;
  transition: margin var(--transition);
}

/* ==================== PÁGINAS ==================== */
.page {
  display: none;
  animation: fadeIn 0.4s ease;
}

.page.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--text-primary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}

.section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 32px 0 16px;
  color: var(--text-primary);
}

/* ==================== GLASSMORPHISM ==================== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.glass:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* ==================== CARDS DE ESTATÍSTICAS ==================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: default;
}

.stat-card:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg {
  width: 24px;
  height: 24px;
}

.xp-icon { background: linear-gradient(135deg, #6C5CE7, #a29bfe); color: #fff; }
.coins-icon { background: linear-gradient(135deg, #fdcb6e, #ffeaa7); color: #2d3436; }
.stars-icon { background: linear-gradient(135deg, #e17055, #fab1a0); color: #fff; }
.streak-icon { background: linear-gradient(135deg, #00b894, #55efc4); color: #fff; }

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: var(--font-size-xl);
  font-weight: 800;
  line-height: 1.2;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ==================== BARRA DE PROGRESSO ==================== */
.progress-section {
  padding: 24px;
  margin-bottom: 24px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.progress-header h2 {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.progress-bar {
  width: 100%;
  height: 12px;
  background: var(--border);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 10px;
  width: 0%;
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.progress-detail {
  margin-top: 8px;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.progress-bar-mini {
  width: 100%;
  height: 6px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill-mini {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 4px;
  width: 0%;
  transition: width 0.6s ease;
}

/* ==================== MÓDULOS GRID ==================== */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.module-card {
  padding: 28px;
  text-align: left;
  border: none;
  cursor: pointer;
  font-family: inherit;
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
}

.module-card:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.module-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.module-card:hover::before {
  opacity: 1;
}

.module-badge {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.module-badge svg {
  width: 28px;
  height: 28px;
}

.module-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 6px;
}

.module-card p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.module-progress-mini {
  margin-top: auto;
}

/* ==================== BOTÕES ==================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border: none;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: var(--font-size-base);
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(108, 92, 231, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

.btn-primary svg {
  width: 20px;
  height: 20px;
}

.btn-large {
  padding: 18px 36px;
  font-size: var(--font-size-lg);
  border-radius: var(--radius);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 24px;
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateX(-4px);
}

.btn-secondary svg {
  width: 18px;
  height: 18px;
}

/* ==================== MÓDULO INTRO ==================== */
.module-intro {
  padding: 40px;
  text-align: center;
  max-width: 700px;
  margin: 0 auto 32px;
}

.module-intro h2 {
  font-size: var(--font-size-xl);
  margin: 20px 0 12px;
}

.module-intro p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

.intro-icon svg {
  width: 80px;
  height: 80px;
}

/* ==================== DIAGNÓSTICO ==================== */

/* Seletor de quantidade de questões */
.diag-count-selector {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 28px;
}

.diag-count-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 3px solid var(--border);
  background: var(--glass-bg);
  color: var(--text-secondary);
  font-size: 1.4rem;
  font-weight: 800;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.diag-count-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
  transform: scale(1.1);
}

.diag-count-btn.active {
  border-color: var(--primary);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
  transform: scale(1.1);
}

.diag-count-btn:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

/* Barra de timer duplo (pergunta + total) */
.diag-timer-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}

.diag-timer-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 70px;
  flex-shrink: 0;
}

.diag-timer-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 2px;
}

.diag-progress-bar {
  flex: 1;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.diag-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 4px;
  width: 0%;
  transition: width 0.4s ease;
}

.diag-progress-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 600;
  text-align: right;
  margin-bottom: 24px;
}

.diag-question-card {
  max-width: 540px;
  margin: 0 auto;
  padding: 48px 40px;
  text-align: center;
}

.diag-timer {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  transition: color 0.2s;
}

.diag-timer-total {
  color: var(--primary);
  font-size: 1.1rem;
}

/* Grid de alternativas múltipla escolha */
.diag-options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  max-width: 400px;
  margin: 0 auto 24px;
}

.diag-option-btn {
  padding: 20px 16px;
  border: 3px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--input-bg);
  color: var(--text-primary);
  font-size: 1.6rem;
  font-weight: 800;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.diag-option-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.diag-option-btn:hover:not(:disabled) {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(108, 92, 231, 0.25);
}

.diag-option-btn:active:not(:disabled) {
  transform: translateY(0);
}

.diag-option-btn:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

/* Estado de seleção: correta */
.diag-option-btn.selected-correct {
  border-color: var(--green);
  background: var(--green-bg);
  color: var(--green);
  animation: popIn 0.3s ease;
  box-shadow: 0 0 24px rgba(0, 184, 148, 0.35);
}

/* Estado de seleção: incorreta */
.diag-option-btn.selected-wrong {
  border-color: var(--red);
  background: var(--red-bg);
  color: var(--red);
  animation: shake 0.4s ease;
}

/* Revelar a correta quando errou */
.diag-option-btn.reveal-correct {
  border-color: var(--green);
  background: var(--green-bg);
  color: var(--green);
}

/* Desabilitar após resposta */
.diag-option-btn:disabled {
  cursor: default;
  opacity: 0.5;
}

.diag-option-btn.selected-correct:disabled,
.diag-option-btn.selected-wrong:disabled,
.diag-option-btn.reveal-correct:disabled {
  opacity: 1;
}

.diag-operation {
  font-size: 4rem;
  font-weight: 900;
  margin-bottom: 32px;
  letter-spacing: 4px;
  background: linear-gradient(135deg, var(--text-primary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.diag-input-group {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.diag-input, .flashcard-input {
  width: 140px;
  padding: 16px 20px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--input-bg);
  color: var(--text-primary);
  font-size: var(--font-size-xl);
  font-weight: 700;
  text-align: center;
  font-family: inherit;
  transition: all var(--transition-fast);
  outline: none;
}

.diag-input:focus, .flashcard-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.15);
}

.diag-feedback, .flashcard-feedback {
  margin-top: 20px;
  font-size: var(--font-size-lg);
  font-weight: 700;
  min-height: 30px;
  transition: all var(--transition-fast);
}

.feedback-correct {
  color: var(--green);
  animation: popIn 0.3s ease;
}

.feedback-wrong {
  color: var(--red);
  animation: shake 0.4s ease;
}

.feedback-slow {
  color: var(--yellow);
}

@keyframes popIn {
  0% { transform: scale(0.5); opacity: 0; }
  50% { transform: scale(1.2); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-10px); }
  40% { transform: translateX(10px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(6px); }
}

/* Resposta correta: brilho verde */
.diag-input.correct {
  border-color: var(--green);
  box-shadow: 0 0 20px rgba(0, 184, 148, 0.4);
  animation: glow-green 0.6s ease;
}

.diag-input.wrong {
  border-color: var(--red);
  box-shadow: 0 0 20px rgba(214, 48, 49, 0.4);
  animation: shake 0.4s ease;
}

@keyframes glow-green {
  0% { box-shadow: 0 0 0 rgba(0,184,148,0); }
  50% { box-shadow: 0 0 40px rgba(0,184,148,0.6); }
  100% { box-shadow: 0 0 20px rgba(0,184,148,0.4); }
}

/* ==================== MAPA DE CALOR ==================== */
.heatmap-section {
  padding: 32px;
  margin-top: 32px;
}

.heatmap-section h2 {
  font-size: var(--font-size-xl);
  margin-bottom: 8px;
}

.heatmap-section > p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: var(--font-size-sm);
}

.heatmap-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 8px;
}

.heatmap-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 4px;
  min-width: 500px;
}

.heatmap-table th,
.heatmap-table td {
  width: calc(100% / 11);
  aspect-ratio: 1;
  text-align: center;
  font-weight: 700;
  border-radius: var(--radius-xs);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.9rem;
}

.heatmap-table th {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.heatmap-table th:first-child {
  background: transparent;
}

.heatmap-table td {
  cursor: pointer;
  position: relative;
}

.heatmap-table td:hover {
  transform: scale(1.1);
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.heatmap-table td:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.heatmap-cell-label {
  display: block;
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* Cores do mapa de calor */
.heatmap-green { background: var(--green-bg); color: var(--green); border: 2px solid var(--green); }
.heatmap-yellow { background: var(--yellow-bg); color: #e17055; border: 2px solid var(--yellow); }
.heatmap-red { background: var(--red-bg); color: var(--red); border: 2px solid var(--red); }
.heatmap-gray { background: var(--gray-bg); color: var(--text-muted); border: 2px solid transparent; }

.heatmap-legend {
  display: flex;
  gap: 20px;
  margin-top: 16px;
  flex-wrap: wrap;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* Estatísticas do mapa de calor */
.heatmap-stats {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
  padding: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.heatmap-stat-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.heatmap-stat-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.heatmap-stat-dot.green { background: var(--green); }
.heatmap-stat-dot.yellow { background: var(--yellow); }
.heatmap-stat-dot.red { background: var(--red); }
.heatmap-stat-dot.gray { background: var(--gray); }

.heatmap-stat-count {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.heatmap-stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.heatmap-stat-total {
  padding-left: 12px;
  border-left: 2px solid var(--border);
}

.legend-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-right: 6px;
  vertical-align: middle;
}

.legend-dot.green { background: var(--green); }
.legend-dot.yellow { background: var(--yellow); }
.legend-dot.red { background: var(--red); }
.legend-dot.gray { background: var(--gray); }

/* Modal de prática do mapa de calor */
.practice-options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  max-width: 340px;
  margin: 20px auto 0;
}

.practice-option-btn {
  padding: 16px 12px;
  border: 3px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--input-bg);
  color: var(--text-primary);
  font-size: 1.4rem;
  font-weight: 800;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.practice-option-btn:hover:not(:disabled) {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(108, 92, 231, 0.25);
}

.practice-option-btn:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.practice-option-btn.prac-correct {
  border-color: var(--green);
  background: var(--green-bg);
  color: var(--green);
  animation: popIn 0.3s ease;
}

.practice-option-btn.prac-wrong {
  border-color: var(--red);
  background: var(--red-bg);
  color: var(--red);
  animation: shake 0.4s ease;
}

.practice-option-btn.prac-reveal {
  border-color: var(--green);
  background: var(--green-bg);
  color: var(--green);
}

.practice-option-btn:disabled {
  cursor: default;
  opacity: 0.5;
}

.practice-option-btn.prac-correct:disabled,
.practice-option-btn.prac-wrong:disabled,
.practice-option-btn.prac-reveal:disabled {
  opacity: 1;
}

.practice-timer {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-top: 8px;
  font-variant-numeric: tabular-nums;
}

.legend-grid {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ==================== ÂNCORAS / FLASHCARDS ==================== */
.ancora-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.ancora-tab {
  padding: 10px 24px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font-weight: 700;
  font-family: inherit;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.ancora-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.ancora-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.ancora-progress-bar {
  margin-bottom: 24px;
}

.ancora-streak-display {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.flashcard-container {
  max-width: 500px;
  margin: 0 auto 32px;
  text-align: center;
}

.flashcard {
  padding: 48px 40px;
  margin-bottom: 24px;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flashcard-operation {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: 4px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.flashcard-hint {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin-top: 16px;
}

.flashcard-input-group {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 12px;
}

/* Status das âncoras */
.anchor-status-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.anchor-status-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: all var(--transition-fast);
}

.anchor-status-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.anchor-status-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 8px;
}

.anchor-status-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.anchor-status-label.completed {
  color: var(--green);
  font-weight: 700;
}

/* Preview cards das âncoras */
.anchor-cards-preview {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 28px;
}

.anchor-preview-card {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 900;
  color: #fff;
  background: var(--accent);
  box-shadow: 0 4px 15px rgba(0,0,0,0.15);
  animation: bounce 2s ease-in-out infinite;
}

.anchor-preview-card:nth-child(2) { animation-delay: 0.2s; }
.anchor-preview-card:nth-child(3) { animation-delay: 0.4s; }
.anchor-preview-card:nth-child(4) { animation-delay: 0.6s; }

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ==================== PONTES ==================== */
.pontes-hub {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.ponte-card {
  padding: 28px;
  text-align: left;
  border: none;
  cursor: pointer;
  font-family: inherit;
  color: var(--text-primary);
}

.ponte-card:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.ponte-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.ponte-icon svg {
  width: 28px;
  height: 28px;
}

.ponte-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: 6px;
}

.ponte-card p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.ponte-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Conteúdo das pontes */
#ponte-content {
  margin-top: 24px;
}

.bridge-explanation {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 32px;
  margin-top: 16px;
}

.bridge-explanation h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 16px;
}

.bridge-step {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.bridge-step:hover {
  transform: translateX(8px);
  border-color: var(--primary);
}

.bridge-step.revealed {
  background: var(--green-bg);
  border-color: var(--green);
}

.bridge-step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex-shrink: 0;
}

.bridge-step-content {
  flex: 1;
}

.bridge-step-title {
  font-weight: 700;
  margin-bottom: 4px;
}

.bridge-step-math {
  font-size: var(--font-size-xl);
  font-weight: 900;
  color: var(--primary);
}

.bridge-step.hidden-step .bridge-step-math {
  color: transparent;
  text-shadow: none;
  user-select: none;
}

.bridge-input-group {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  justify-content: center;
}

/* Mão SVG para dedos do 9 */
.hands-container {
  display: flex;
  gap: 32px;
  justify-content: center;
  margin: 24px 0;
}

.hand-svg {
  max-width: 240px;
}

/* ==================== REABILITAÇÃO / VILÕES ==================== */
.villains-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.villain-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.villain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.villain-card.is-red {
  border-color: var(--red);
  animation: pulse-border 2s ease-in-out infinite;
}

@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 0 0 rgba(214, 48, 49, 0.3); }
  50% { box-shadow: 0 0 20px 4px rgba(214, 48, 49, 0.2); }
}

.villain-card:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.villain-emoji {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.villain-fact {
  font-size: var(--font-size-xl);
  font-weight: 900;
  margin-bottom: 8px;
}

.villain-status {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.villain-status.rehabilitated {
  color: var(--green);
  font-weight: 700;
}

.villain-progress-mini {
  margin-top: 12px;
}

/* Passos da reabilitação */
.rehab-step {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  text-align: center;
  animation: fadeIn 0.4s ease;
}

.rehab-step h3 {
  font-size: var(--font-size-lg);
  margin-bottom: 12px;
  color: var(--primary);
}

.rehab-step .math-display {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  margin: 12px 0;
}

.rehab-input-group {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 16px;
}

.rehab-progress-dots {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 16px;
}

.rehab-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border);
  transition: all var(--transition-fast);
}

.rehab-dot.filled {
  background: var(--green);
  transform: scale(1.2);
}

/* ==================== CONQUISTAS ==================== */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.achievement-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition-fast);
  opacity: 0.5;
}

.achievement-card.unlocked {
  opacity: 1;
  border-color: var(--accent-yellow);
  box-shadow: 0 0 20px rgba(253, 203, 110, 0.15);
}

.achievement-card:hover {
  transform: translateY(-2px);
}

.achievement-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  background: var(--gray-bg);
}

.achievement-card.unlocked .achievement-icon {
  background: linear-gradient(135deg, var(--accent-yellow), var(--accent-orange));
}

.achievement-info h3 {
  font-size: var(--font-size-base);
  margin-bottom: 4px;
}

.achievement-info p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* Ranking */
.ranking-section {
  padding: 24px;
}

.ranking-table {
  width: 100%;
  border-collapse: collapse;
}

.ranking-table th,
.ranking-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.ranking-table th {
  font-weight: 700;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.ranking-table tr:last-child td {
  border-bottom: none;
}

.ranking-table tr.current-player {
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
}

.ranking-table tr.current-player td {
  border-bottom-color: transparent;
}

/* ==================== CONFETTI ==================== */
.confetti-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  width: 10px;
  height: 10px;
  top: -10px;
  animation: confetti-fall linear forwards;
}

@keyframes confetti-fall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

/* ==================== TOAST ==================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-lg);
  font-weight: 600;
  animation: slideInRight 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
  display: flex;
  align-items: center;
  gap: 10px;
}

.toast-success { border-left: 4px solid var(--green); }
.toast-error { border-left: 4px solid var(--red); }
.toast-info { border-left: 4px solid var(--primary); }
.toast-achievement { border-left: 4px solid var(--accent-yellow); }

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; transform: translateY(10px); }
}

/* ==================== MODAL ==================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.modal-content {
  padding: 48px;
  text-align: center;
  max-width: 420px;
  width: 90%;
  animation: popIn 0.4s ease;
}

.modal-content h2 {
  font-size: var(--font-size-2xl);
  margin: 16px 0 8px;
}

.modal-content p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.levelup-star {
  width: 80px;
  height: 80px;
  animation: spin-star 1s ease-out;
}

@keyframes spin-star {
  0% { transform: scale(0) rotate(-180deg); }
  60% { transform: scale(1.3) rotate(20deg); }
  100% { transform: scale(1) rotate(0deg); }
}

.levelup-rewards {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 24px;
}

.levelup-rewards span {
  padding: 8px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-weight: 700;
}

/* ==================== UTILITÁRIOS ==================== */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ==================== SIDEBAR: DIVIDER & SECUNDÁRIO ==================== */
.nav-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 16px;
  list-style: none;
}

.nav-list-secondary {
  margin-top: auto;
  padding-top: 0;
}

/* ==================== CONFIGURAÇÕES ==================== */
.settings-group {
  padding: 28px;
  margin-bottom: 20px;
}

.settings-group-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.settings-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  color: var(--primary);
}

.settings-group-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* Theme Picker */
.theme-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.theme-card {
  border: 3px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.theme-card:hover {
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

.theme-card.active {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(108, 92, 231, 0.25);
}

.theme-card:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

.theme-card-label {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
}

/* Miniaturas de preview de tema */
.theme-preview {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  position: relative;
  border: 1px solid rgba(0,0,0,0.1);
}

.theme-preview-light {
  background: #f0f0f7;
}

.theme-preview-dark {
  background: #0a0a1a;
}

.theme-preview-hc {
  background: #000000;
}

.tp-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 20%;
}

.theme-preview-light .tp-bar { background: #fff; border-bottom: 1px solid #ddd; }
.theme-preview-dark .tp-bar { background: #151528; border-bottom: 1px solid #252540; }
.theme-preview-hc .tp-bar { background: #000; border-bottom: 2px solid #fff; }

.tp-sidebar {
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 0;
  width: 28%;
}

.theme-preview-light .tp-sidebar { background: #fff; border-right: 1px solid #ddd; }
.theme-preview-dark .tp-sidebar { background: #0f0f1e; border-right: 1px solid #252540; }
.theme-preview-hc .tp-sidebar { background: #111; border-right: 2px solid #fff; }

.tp-content {
  position: absolute;
  left: 28%;
  top: 20%;
  right: 0;
  bottom: 0;
  padding: 8%;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tp-block {
  height: 18%;
  border-radius: 3px;
}

.theme-preview-light .tp-block { background: #e0e0ea; }
.theme-preview-dark .tp-block { background: #252540; }
.theme-preview-hc .tp-block { background: #fff; }

/* Font Size Control */
.font-size-control {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.font-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--glass-bg);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-family: inherit;
  position: relative;
}

.font-btn:hover {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.font-btn:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

.font-btn-label {
  font-weight: 800;
  font-size: 0.85rem;
  line-height: 1;
}

.font-btn-label.font-large {
  font-size: 1.1rem;
}

.font-btn-sign {
  font-size: 0.6rem;
  line-height: 1;
  opacity: 0.6;
}

.font-size-display {
  display: flex;
  align-items: baseline;
  gap: 2px;
  min-width: 50px;
  justify-content: center;
}

#cfg-font-size-value {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--primary);
}

.font-size-unit {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

.font-preview {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: font-size var(--transition);
}

/* Toggle Switch */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.toggle-row:last-child {
  border-bottom: none;
}

.toggle-label {
  font-weight: 600;
  color: var(--text-primary);
}

.toggle-desc {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.toggle-switch {
  position: relative;
  width: 50px;
  height: 28px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 28px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  left: 3px;
  top: 3px;
  transition: transform var(--transition-fast);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--primary);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(22px);
}

.toggle-switch input:focus-visible + .toggle-slider {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

/* Volume Slider */
.audio-settings {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.volume-label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.volume-slider-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.audio-btn-sm {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--glass-bg);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.audio-btn-sm:hover {
  background: var(--primary);
  color: #fff;
}

.audio-btn-sm svg {
  width: 16px;
  height: 16px;
}

.volume-slider {
  flex: 1;
  height: 8px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border);
  border-radius: 4px;
  outline: none;
  cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(108, 92, 231, 0.4);
  transition: transform var(--transition-fast);
}

.volume-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.volume-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 6px rgba(108, 92, 231, 0.4);
}

.volume-value-text {
  font-weight: 700;
  min-width: 40px;
  text-align: right;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

/* Data Actions */
.data-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-danger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 2px solid var(--red);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--red);
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-danger:hover {
  background: var(--red);
  color: #fff;
  transform: translateY(-2px);
}

.btn-danger:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 3px;
}

/* ==================== AJUDA ==================== */
.help-intro {
  padding: 32px;
  margin-bottom: 24px;
}

.help-intro h2 {
  font-size: var(--font-size-xl);
  margin-bottom: 12px;
}

.help-intro p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Acordeão */
.help-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.help-item {
  overflow: hidden;
}

.help-item-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 24px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  color: var(--text-primary);
  text-align: left;
  transition: background var(--transition-fast);
}

.help-item-header:hover {
  background: var(--glass-bg);
}

.help-item-header:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: -3px;
  border-radius: var(--radius);
}

.help-item-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.help-item-icon svg {
  width: 22px;
  height: 22px;
}

.help-item-title {
  flex: 1;
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.help-chevron {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.help-item.open .help-chevron {
  transform: rotate(180deg);
}

.help-item-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
  padding: 0 24px;
}

.help-item.open .help-item-body {
  max-height: 2000px;
  padding: 0 24px 24px;
}

.help-item-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 16px 0 8px;
  color: var(--primary);
}

.help-item-body h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 12px 0 4px;
}

.help-item-body p,
.help-item-body li {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

.help-item-body ul,
.help-item-body ol {
  padding-left: 20px;
  margin: 8px 0;
}

.help-item-body li {
  margin-bottom: 6px;
}

.help-strategy {
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin: 8px 0;
}

.help-strategy h4 {
  margin-top: 0;
  color: var(--primary);
}

.help-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-right: 4px;
  vertical-align: middle;
}

.help-green { background: var(--green-bg); color: var(--green); }
.help-yellow { background: var(--yellow-bg); color: #e17055; }
.help-red { background: var(--red-bg); color: var(--red); }

/* ==================== RESPONSIVIDADE ==================== */

/* Tablet */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .modules-grid,
  .pontes-hub {
    grid-template-columns: 1fr;
  }

  .anchor-status-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .main-content {
    padding: 24px 24px 60px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .hamburger {
    display: flex;
  }

  .main-content {
    margin-left: 0;
    padding: 80px 16px 60px;
  }

  .page-title {
    font-size: var(--font-size-2xl);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .stat-card {
    padding: 14px;
  }

  .stat-icon {
    width: 40px;
    height: 40px;
  }

  .diag-operation {
    font-size: 2.5rem;
  }

  .diag-question-card {
    padding: 32px 20px;
  }

  .diag-options-grid {
    gap: 8px;
  }

  .diag-option-btn {
    padding: 16px 12px;
    font-size: 1.3rem;
  }

  .diag-count-btn {
    width: 54px;
    height: 54px;
    font-size: 1.2rem;
  }

  .diag-timer-bar {
    gap: 10px;
  }

  .diag-timer-item {
    min-width: 55px;
  }

  .flashcard-operation {
    font-size: 2.5rem;
  }

  .flashcard {
    padding: 32px 24px;
  }

  .anchor-status-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .villains-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .achievements-grid {
    grid-template-columns: 1fr;
  }

  .a11y-bar {
    top: auto;
    bottom: 0;
    right: 0;
    left: 0;
    border-radius: 0;
    justify-content: center;
    border: none;
    border-top: 1px solid var(--glass-border);
  }

  .module-intro {
    padding: 24px;
  }

  .heatmap-table th,
  .heatmap-table td {
    font-size: 0.75rem;
    padding: 4px;
  }

  .bridge-step {
    flex-direction: column;
    text-align: center;
  }

  .hands-container {
    flex-direction: column;
    align-items: center;
  }

  .legend-grid {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  .toast-container {
    left: 16px;
    right: 16px;
    bottom: 60px;
  }

  .toast {
    width: 100%;
  }

  /* Configurações e Ajuda mobile */
  .theme-picker {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .theme-card {
    padding: 8px;
  }

  .theme-card-label {
    font-size: 0.75rem;
  }

  .font-size-control {
    flex-wrap: wrap;
    justify-content: center;
  }

  .settings-group {
    padding: 20px;
  }

  .help-item-header {
    padding: 14px 16px;
  }

  .help-item-body {
    padding: 0 16px;
  }

  .help-item.open .help-item-body {
    padding: 0 16px 20px;
  }

  .help-item-title {
    font-size: 1rem;
  }

  .data-actions {
    flex-direction: column;
  }

  .data-actions .btn-secondary,
  .data-actions .btn-danger {
    width: 100%;
    justify-content: center;
  }

  /* Painel dos pais mobile */
  .parent-summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .parent-table-grid {
    grid-template-columns: 1fr;
  }

  .parent-analysis {
    grid-template-columns: 1fr;
  }

  .modal-actions {
    flex-direction: column;
  }

  /* Teclado virtual mobile */
  .virtual-numpad {
    max-width: 100%;
    gap: 6px;
  }

  .numpad-btn {
    height: 52px;
    font-size: 1.3rem;
  }
}

/* Telas muito pequenas */
@media (max-width: 480px) {
  .virtual-numpad {
    max-width: 260px;
    gap: 5px;
  }

  .numpad-btn {
    height: 48px;
    font-size: 1.2rem;
  }

  .flashcard-operation {
    font-size: 2rem;
  }

  .flashcard {
    padding: 24px 16px;
  }

  .rehab-step {
    padding: 16px;
  }

  .rehab-step .math-display {
    font-size: 1.6rem;
  }
}

/* TV / Telas grandes */
@media (min-width: 1600px) {
  :root {
    --font-size-base: 20px;
    --sidebar-width: 280px;
  }

  .main-content {
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding-left: calc(var(--sidebar-width) + 40px);
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .modules-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==================== PRINT ==================== */
@media print {
  .sidebar, .hamburger, .a11y-bar, .audio-controls, .theme-toggle {
    display: none;
  }

  .main-content {
    margin-left: 0;
    padding: 0;
  }

  body::before, body::after {
    display: none;
  }
}

/* ==================== PAINEL DOS PAIS ==================== */
.parent-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.parent-summary-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all var(--transition-fast);
}

.parent-summary-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.parent-summary-icon {
  font-size: 2rem;
  margin-bottom: 8px;
  display: block;
}

.parent-summary-value {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 4px;
}

.parent-summary-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 600;
}

/* Grade de tabuadas */
.parent-table-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.parent-table-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all var(--transition-fast);
}

.parent-table-card:hover {
  box-shadow: var(--shadow);
}

.parent-table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.parent-table-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
}

.parent-table-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.parent-table-badge.badge-green {
  background: var(--green-bg, rgba(0,184,148,0.15));
  color: var(--green);
}

.parent-table-badge.badge-yellow {
  background: var(--yellow-bg, rgba(253,203,110,0.15));
  color: var(--yellow);
}

.parent-table-badge.badge-red {
  background: var(--red-bg, rgba(214,48,49,0.15));
  color: var(--red);
}

.parent-table-badge.badge-gray {
  background: var(--border);
  color: var(--text-muted);
}

.parent-table-stats {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.parent-table-stat {
  display: flex;
  align-items: center;
  gap: 4px;
}

.parent-table-bar {
  height: 8px;
  border-radius: 4px;
  background: var(--border);
  overflow: hidden;
}

.parent-table-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s ease;
}

.parent-table-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 10px;
}

.parent-fact-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  font-size: 0.65rem;
  font-weight: 700;
  color: #fff;
}

.parent-fact-chip.fact-green { background: var(--green); }
.parent-fact-chip.fact-yellow { background: var(--yellow); color: #000; }
.parent-fact-chip.fact-red { background: var(--red); }
.parent-fact-chip.fact-gray { background: var(--text-muted); }

/* Análise detalhada */
.parent-analysis {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.parent-analysis-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
}

.parent-analysis-title {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.parent-analysis-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.parent-analysis-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.parent-analysis-list li:last-child {
  border-bottom: none;
}

.parent-analysis-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
}

.parent-empty-msg {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.9rem;
}

/* Ações do painel */
.parent-actions {
  text-align: center;
  padding: 24px 0;
  border-top: 1px solid var(--border);
}

.parent-note {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Modal de confirmação */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
}

.modal-card {
  max-width: 420px;
  width: 90%;
  padding: 32px;
  border-radius: var(--radius-lg);
  text-align: center;
}

.modal-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.modal-card p {
  color: var(--text-secondary);
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

.btn-danger {
  background: var(--red);
  color: #fff;
  border: none;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.btn-danger:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(214, 48, 49, 0.3);
}

.btn-danger svg {
  width: 18px;
  height: 18px;
}

/* ==================== TECLADO VIRTUAL ==================== */
.virtual-numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  max-width: 280px;
  margin: 16px auto 0;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.numpad-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  border-radius: var(--radius);
  border: 2px solid var(--border);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  color: var(--text-primary);
  font-size: 1.4rem;
  font-weight: 700;
  font-family: 'Nunito', sans-serif;
  cursor: pointer;
  transition: all 0.15s ease;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.numpad-btn:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  transform: scale(1.05);
}

.numpad-btn:active {
  transform: scale(0.95);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.numpad-btn.numpad-active {
  transform: scale(0.92);
  background: var(--primary) !important;
  color: #ffffff !important;
  border-color: var(--primary) !important;
  box-shadow: 0 2px 12px rgba(0,0,0,0.25);
}

.numpad-btn:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.numpad-btn.is-zero {
  font-size: 1.6rem;
}

.numpad-btn.is-action {
  font-size: 1.2rem;
  font-weight: 800;
}

.numpad-btn.numpad-backspace {
  color: var(--red);
  border-color: var(--red);
}

.numpad-btn.numpad-backspace:hover {
  background: var(--red);
  color: #ffffff;
}

.numpad-btn.numpad-enter {
  color: var(--green);
  border-color: var(--green);
}

.numpad-btn.numpad-enter:hover {
  background: var(--green);
  color: #ffffff;
}

.numpad-btn.numpad-clear {
  color: var(--yellow);
  border-color: var(--yellow);
}

.numpad-btn.numpad-clear:hover {
  background: var(--yellow);
  color: #000000;
}

/* Indicador do teclado */
.numpad-display {
  text-align: center;
  margin-bottom: 8px;
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.numpad-display .cursor {
  display: inline-block;
  width: 3px;
  height: 2rem;
  background: var(--primary);
  animation: blink-cursor 1s step-end infinite;
}

@keyframes blink-cursor {
  50% { opacity: 0; }
}

/* Alto contraste: bordas mais grossas */
[data-high-contrast="true"] .numpad-btn {
  border-width: 3px;
  font-weight: 900;
}

/* ==================== REDUCE MOTION ==================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}