/* ==========================================================================
   OuviAula - Estilos Oficiais (ouviaula.com)
   Foco em Acessibilidade, Performance e Design Moderno
   ========================================================================== */

:root {
  /* Paleta Padrão (Light Mode) */
  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --surface-alt: #f1f5f9;
  --border-color: #e2e8f0;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;
  
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  
  --secondary: #0d9488;
  --secondary-hover: #0f766e;
  
  --accent: #f59e0b;
  --success: #16a34a;
  --success-hover: #15803d;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --font-scale: 100%;
}

/* Modo Alto Contraste (Acessibilidade WCAG AAA) */
[data-theme="high-contrast"] {
  --bg-color: #000000;
  --surface-color: #121212;
  --surface-alt: #1e1e1e;
  --border-color: #ffffff;
  
  --text-main: #ffffff;
  --text-muted: #ffff00; /* Amarelo sobre preto tem o maior contraste */
  --text-light: #ffffff;
  
  --primary: #00e5ff;
  --primary-hover: #18ffff;
  --primary-light: #00363a;
  
  --secondary: #ffff00;
  --secondary-hover: #ffd600;
  
  --success: #00e676;
  --success-hover: #00c853;
  
  --shadow-md: 0 0 0 2px #ffffff;
  --shadow-lg: 0 0 0 3px #ffffff;
}

/* Modo Escuro Padrão */
[data-theme="dark"] {
  --bg-color: #0b0f19;
  --surface-color: #111827;
  --surface-alt: #1f2937;
  --border-color: #374151;
  
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --text-light: #6b7280;
  
  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-light: #1e3a8a;
  
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
}

/* ==========================================================================
   Reset e Elementos Base
   ========================================================================== */

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

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

html {
  overflow-x: hidden !important;
  max-width: 100vw !important;
  width: 100% !important;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  transition: background-color 0.25s ease, color 0.25s ease;
  overflow-x: hidden !important;
  max-width: 100vw !important;
  width: 100% !important;
  position: relative;
}

/* Foco visível acessível */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ==========================================================================
   Barra de Acessibilidade Superior
   ========================================================================== */

.accessibility-bar {
  background-color: var(--surface-alt);
  border-bottom: 1px solid var(--border-color);
  padding: 0.4rem 0;
  font-size: 0.875rem;
}

.a11y-container {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 1rem;
}

.a11y-label {
  color: var(--text-muted);
  font-weight: 500;
}

.a11y-controls {
  display: flex;
  gap: 0.5rem;
}

.a11y-btn {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s ease;
}

.a11y-btn:hover {
  background: var(--primary-light);
  border-color: var(--primary);
}

/* ==========================================================================
   Cabeçalho / Header Moderno
   ========================================================================== */

.site-header {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .site-header {
  background: rgba(10, 15, 29, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 4.5rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-main);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.logo-icon {
  font-size: 1.75rem;
  line-height: 1;
}

.logo-highlight {
  color: #2563eb;
}

[data-theme="dark"] .logo-highlight {
  color: #38bdf8;
}

.logo-text strong {
  color: #2563eb;
}

/* Proteção de contraste para páginas e cabeçalhos escuros */
.checkout-body .logo,
.checkout-body .logo-text,
.success-body .logo,
.success-body .logo-text,
.cancel-body .logo,
.cancel-body .logo-text,
.checkout-nav .logo,
.checkout-nav .logo-text {
  color: #ffffff !important;
}

.checkout-body .logo-text strong,
.success-body .logo-text strong,
.cancel-body .logo-text strong,
.checkout-nav .logo-text strong {
  color: #38bdf8 !important;
}

.main-nav {
  display: flex;
  align-items: center;
}

.main-nav .nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.35rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  white-space: nowrap !important;
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.btn-header-login {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  transition: all 0.2s ease;
}

.btn-header-login:hover {
  background: var(--surface-alt);
  border-color: #cbd5e1;
  transform: translateY(-1px);
}

.btn-header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.58rem 1.3rem;
  font-size: 0.88rem;
  font-weight: 700;
  color: #ffffff !important;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  border: none;
  border-radius: 10px;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  transition: all 0.2s ease;
}

.btn-header-cta:hover {
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.45);
}

/* Botão Hambúrguer Mobile */
.mobile-menu-btn {
  display: none;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  width: 42px;
  height: 42px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  padding: 0;
  color: var(--text-main);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.mobile-menu-btn:hover {
  background: var(--surface-alt);
  border-color: #cbd5e1;
}

.hamburger-bar {
  width: 20px;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] .hamburger-bar {
  background-color: #ffffff;
}

.mobile-menu-btn.active .hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active .hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav-actions {
  display: none;
}

/* ==========================================================================
   Botões e Componentes Comuns
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.45rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(29, 78, 216, 0.6);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(37, 99, 235, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-secondary {
  background-color: var(--surface-color);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.03);
}

.btn-secondary:hover {
  background-color: var(--surface-alt);
  border-color: #cbd5e1;
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.06);
}

.btn-success {
  background: linear-gradient(135deg, #16a34a, #15803d);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(22, 163, 74, 0.35);
}

.btn-success:hover {
  background: linear-gradient(135deg, #15803d, #166534);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(22, 163, 74, 0.45);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-muted);
}

.btn-outline:hover {
  background-color: var(--surface-alt);
  color: var(--text-main);
  border-color: #cbd5e1;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-md);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3rem auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--primary);
  background-color: var(--primary-light);
  border: 1px solid rgba(37, 99, 235, 0.15);
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-size: 2.35rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* ==========================================================================
   Hero Section com Movimento, Aurora e Vitrine Interativa
   ========================================================================== */

.hero-section {
  padding: 5.5rem 0 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Luzes e Efeitos de Fundo com Movimento Suave */
.hero-aurora-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(85px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.16;
}

.hero-aurora-glow.glow-1 {
  top: -10%;
  left: 25%;
  width: 500px;
  height: 450px;
  background: radial-gradient(circle, #2563eb 0%, #3b82f6 100%);
  animation: auroraFloat 12s ease-in-out infinite alternate;
}

.hero-aurora-glow.glow-2 {
  top: 15%;
  right: 15%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, #38bdf8 0%, #6366f1 100%);
  animation: auroraFloatAlt 15s ease-in-out infinite alternate;
}

.hero-aurora-glow.glow-3 {
  bottom: 0%;
  left: 35%;
  width: 460px;
  height: 380px;
  background: radial-gradient(circle, #6366f1 0%, #a855f7 100%);
  opacity: 0.1;
  animation: auroraFloat 18s ease-in-out infinite alternate-reverse;
}

.hero-grid-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 40%, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 40%, black 20%, transparent 80%);
  pointer-events: none;
  z-index: 0;
}

[data-theme="dark"] .hero-grid-pattern {
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
}

@keyframes auroraFloat {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -25px) scale(1.1); }
  100% { transform: translate(-20px, 20px) scale(0.95); }
}

@keyframes auroraFloatAlt {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-35px, 25px) scale(1.12); }
  100% { transform: translate(25px, -20px) scale(0.92); }
}

.hero-container {
  position: relative;
  z-index: 1;
  max-width: 980px;
}

/* Badge com Onda Sonora Ativa */
.hero-sound-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1.25rem;
  background-color: var(--surface-color);
  border: 1px solid rgba(37, 99, 235, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 2rem;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.09);
  backdrop-filter: blur(10px);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.hero-sound-badge:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
}

.sound-wave-equalizer {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  height: 16px;
}

.wave-bar {
  display: inline-block;
  width: 3px;
  background: var(--primary);
  border-radius: 2px;
  animation: soundBarWave 1.2s ease-in-out infinite alternate;
}

.wave-bar.bar-1 { height: 6px; animation-delay: 0.1s; }
.wave-bar.bar-2 { height: 14px; animation-delay: 0.4s; }
.wave-bar.bar-3 { height: 8px; animation-delay: 0.2s; }
.wave-bar.bar-4 { height: 16px; animation-delay: 0.5s; }
.wave-bar.bar-5 { height: 10px; animation-delay: 0.3s; }

@keyframes soundBarWave {
  0% { transform: scaleY(0.3); opacity: 0.5; }
  50% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(0.4); opacity: 0.6; }
}

.badge-live-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: #10b981;
  background: rgba(16, 185, 129, 0.1);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

.live-indicator-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseLiveDot 1.8s infinite;
}

@keyframes pulseLiveDot {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Título com Rotador Dinâmico */
.hero-title {
  font-size: 3.6rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
  margin-bottom: 1.5rem;
  color: var(--text-main);
}

.hero-rotator {
  display: inline-block;
  min-width: 320px;
  position: relative;
}

.rotator-text {
  background: linear-gradient(135deg, #2563eb 0%, #0284c7 50%, #4f46e5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.rotator-text.fade-out {
  opacity: 0;
  transform: translateY(-8px);
}

.rotator-text.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 2.25rem auto;
  line-height: 1.6;
}

.hero-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.75rem;
}

.tag-pill {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.04);
  transition: all 0.25s ease;
}

.tag-pill:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.12);
}

/* Botões do Hero com Efeito de Brilho e Acabamento Premium */
.hero-cta-group {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.15rem;
  flex-wrap: wrap;
  margin-bottom: 2.75rem;
}

.btn-hero-primary {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  padding: 0.95rem 2.15rem;
  font-size: 1.02rem;
  font-weight: 700;
  border-radius: 12px;
  box-shadow: 0 10px 25px -4px rgba(37, 99, 235, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px -4px rgba(37, 99, 235, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
}

.btn-shimmer {
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.28), transparent);
  transform: skewX(-20deg);
  animation: shimmerMove 3.5s infinite;
}

@keyframes shimmerMove {
  0% { left: -100%; }
  35%, 100% { left: 150%; }
}

.btn-hero-secondary {
  background: #ffffff;
  color: #0f172a;
  border: 1.5px solid #cbd5e1;
  padding: 0.95rem 1.95rem;
  font-size: 1.02rem;
  font-weight: 700;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

[data-theme="dark"] .btn-hero-secondary {
  background: #1e293b;
  color: #f8fafc;
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.btn-hero-secondary:hover {
  transform: translateY(-2px);
  background: #ffffff;
  border-color: #2563eb;
  color: #2563eb;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15);
}

[data-theme="dark"] .btn-hero-secondary:hover {
  background: #334155;
  border-color: #38bdf8;
  color: #38bdf8;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

/* ==========================================================
   VITRINE NEXT-GEN DO HERO (Showcase Shell do Aplicativo)
   Design ultra-moderno sem sobreposição ou colisão de texto
   ========================================================== */
.hero-showcase-wrapper {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
  padding: 0.5rem 0 1.5rem 0;
}

/* Aurora Backdrop Glow */
.hero-glow-backdrop {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  height: 75%;
  background: radial-gradient(ellipse at 50% 45%, rgba(59, 130, 246, 0.28) 0%, rgba(139, 92, 246, 0.22) 45%, rgba(16, 185, 129, 0.12) 70%, transparent 80%);
  filter: blur(65px);
  z-index: 0;
  pointer-events: none;
  border-radius: 50%;
}

/* Janela Principal do Aplicativo (App Shell) */
.hero-app-window {
  position: relative;
  z-index: 1;
  background: #0b1120;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  box-shadow: 0 25px 65px -12px rgba(15, 23, 42, 0.45), 0 0 0 1px rgba(99, 102, 241, 0.2);
  overflow: hidden;
  text-align: left;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
}

.hero-app-window:hover {
  transform: translateY(-2px);
  box-shadow: 0 32px 80px -15px rgba(15, 23, 42, 0.55), 0 0 0 1px rgba(56, 189, 248, 0.35);
}

/* Topbar do Aplicativo */
.app-window-topbar {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.8rem 1.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.window-controls-dots {
  display: flex;
  gap: 6px;
}

.window-controls-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.active-doc-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  font-size: 0.78rem;
  color: #cbd5e1;
  font-weight: 500;
}

.topbar-center {
  display: flex;
  align-items: center;
}

.app-brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.84rem;
  font-weight: 700;
  color: #ffffff;
}

.app-status-live {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  animation: pulseLiveDot 1.5s infinite;
}

.topbar-right {
  display: flex;
  align-items: center;
}

.shortcut-hint-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  font-size: 0.74rem;
  color: #94a3b8;
  font-family: monospace;
}

.shortcut-k {
  color: #38bdf8;
  font-weight: 700;
}

.shortcut-sep {
  color: #64748b;
}

/* Corpo Principal da Janela */
.app-window-main {
  padding: 1.6rem 1.85rem;
}

.reading-experience-block {
  margin-bottom: 1.35rem;
}

.reading-context-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #38bdf8;
  margin-bottom: 0.75rem;
}

.context-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 10px #38bdf8;
  animation: pulseLiveDot 1.4s infinite;
}

.sample-karaoke-text {
  font-size: 1.15rem;
  line-height: 1.75;
  color: #e2e8f0;
  margin: 0 0 1.25rem 0;
  font-weight: 400;
}

.karaoke-word-active {
  background: linear-gradient(120deg, rgba(37, 99, 235, 0.3) 0%, rgba(56, 189, 248, 0.35) 100%);
  border-bottom: 2.5px solid #38bdf8;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-weight: 700;
  color: #ffffff;
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.25);
}

/* Barra do Player Embutida */
.embedded-player-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: rgba(30, 41, 59, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.7rem 1.15rem;
  border-radius: 14px;
  flex-wrap: wrap;
}

.hero-listen-btn {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  border: none;
  border-radius: 10px;
  padding: 0.55rem 1.15rem;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.hero-listen-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.55);
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

.hero-live-soundwaves {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 24px;
  flex: 1;
  justify-content: center;
  padding: 0 1rem;
  min-width: 120px;
}

.sound-wave-bar {
  width: 3.5px;
  height: 5px;
  background: #475569;
  border-radius: 3px;
  transition: height 0.2s ease, background-color 0.2s ease;
}

.hero-live-soundwaves.playing .sound-wave-bar {
  background: #38bdf8;
  animation: visDance 0.8s ease-in-out infinite alternate;
}

.sound-wave-bar:nth-child(2n) { animation-delay: 0.15s; }
.sound-wave-bar:nth-child(3n) { animation-delay: 0.3s; }
.sound-wave-bar:nth-child(4n) { animation-delay: 0.1s; }
.sound-wave-bar:nth-child(5n) { animation-delay: 0.25s; }

@keyframes visDance {
  0% { height: 4px; }
  50% { height: 22px; }
  100% { height: 6px; }
}

.player-meta-badges {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.meta-badge-speed {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}

.meta-badge-voice {
  background: rgba(255, 255, 255, 0.05);
  color: #94a3b8;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
}

/* ==========================================================
   TUTOR DE IA INTEGRADO (Dock de Inteligência sem Colisão)
   ========================================================== */
.ai-tutor-dock {
  background: rgba(17, 24, 39, 0.75);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: 16px;
  padding: 1.15rem 1.35rem;
  position: relative;
  box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.3);
}

.tutor-dock-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 0.85rem;
}

.tutor-brand-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.tutor-icon-glow {
  font-size: 1.3rem;
  filter: drop-shadow(0 0 8px rgba(168, 85, 247, 0.6));
}

.tutor-title-text {
  font-size: 0.95rem;
  font-weight: 800;
  color: #f1f5f9;
}

.tutor-subtitle-text {
  font-size: 0.82rem;
  color: #94a3b8;
}

.tutor-modes-switch {
  display: flex;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 3px;
  gap: 4px;
}

.tutor-mode-btn {
  border: none;
  background: transparent;
  color: #94a3b8;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.4rem 0.85rem;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.tutor-mode-btn:hover {
  color: #ffffff;
}

.tutor-mode-btn.active {
  background: #7c3aed;
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(124, 58, 237, 0.4);
}

.tdah-points-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.tdah-point-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9rem;
  line-height: 1.5;
  color: #cbd5e1;
}

.point-number {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(124, 58, 237, 0.2);
  color: #c084fc;
  font-weight: 800;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
  border: 1px solid rgba(124, 58, 237, 0.4);
}

.analogia-box {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 12px;
  padding: 0.9rem 1.15rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.analogia-quote-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.analogia-text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.55;
  color: #d1fae5;
}

/* Footer de Recursos da Janela */
.app-window-footer {
  background: rgba(15, 23, 42, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.window-feature-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: #94a3b8;
}

.window-feature-tag strong {
  color: #f1f5f9;
}

/* Responsividade do Hero */
@media (max-width: 900px) {
  .hero-title {
    font-size: 2.5rem;
  }
  .app-window-topbar {
    justify-content: center;
  }
  .topbar-center, .topbar-right {
    display: none;
  }
  .app-window-main {
    padding: 1.25rem 1.25rem;
  }
  .embedded-player-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-live-soundwaves {
    margin: 0.5rem 0;
  }
  .player-meta-badges {
    justify-content: center;
  }
  .tutor-dock-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .app-window-footer {
    justify-content: flex-start;
  }
}

@media (max-width: 600px) {
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .hero-cta-group {
    flex-direction: column;
    gap: 0.75rem;
  }
  .btn-hero-primary, .btn-hero-secondary {
    width: 100%;
    justify-content: center;
    box-sizing: border-box;
  }
  .sample-karaoke-text {
    font-size: 1rem;
    line-height: 1.6;
  }
  .window-feature-tag {
    font-size: 0.76rem;
  }
}

@media (max-width: 600px) {
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .hero-cta-group {
    flex-direction: column;
    gap: 0.75rem;
  }
  .btn-hero-primary, .btn-hero-secondary {
    width: 100%;
    justify-content: center;
    box-sizing: border-box;
  }
}
}

/* ==========================================================================
   Demonstração Interativa (Player)
   ========================================================================== */

.demo-section {
  padding: 4.5rem 0;
  background-color: var(--surface-alt);
}

.demo-card {
  max-width: 860px;
  margin: 0 auto;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-xl);
}

.demo-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.tab-btn {
  background: var(--surface-alt);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.tab-btn:hover {
  background: var(--border-color);
  color: var(--text-main);
}

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

.demo-text-box textarea {
  width: 100%;
  padding: 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1.05rem;
  line-height: 1.6;
  background-color: var(--bg-color);
  color: var(--text-main);
  resize: vertical;
  min-height: 130px;
}

.demo-player-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.player-left {
  display: flex;
  gap: 0.75rem;
}

.player-btn {
  min-width: 150px;
}

.player-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.speed-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.custom-select {
  padding: 0.6rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--surface-color);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.tutor-callout {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  background-color: var(--primary-light);
  border-radius: var(--radius-md);
  border: 1px solid rgba(37, 99, 235, 0.15);
}

.tutor-icon {
  font-size: 1.8rem;
}

.tutor-info strong {
  display: block;
  color: var(--primary);
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.tutor-info p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* ==========================================================================
   Como Funciona (Steps Grid)
   ========================================================================== */

.how-it-works {
  padding: 5rem 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.step-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.step-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 1rem;
}

.step-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.step-card p {
  color: var(--text-muted);
}

/* ==========================================================================
   Público-Alvo (Audience Section)
   ========================================================================== */

.audience-section {
  padding: 5rem 0;
  background-color: var(--surface-alt);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.audience-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-sm);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
}

.audience-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.audience-card p {
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Download Desktop (Preview Mockup)
   ========================================================================== */

.download-section {
  padding: 5rem 0;
}

.download-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.download-content h2 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.download-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.download-checklist {
  list-style: none;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.download-checklist li {
  font-weight: 600;
  color: var(--text-main);
  font-size: 1rem;
}

.download-action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}

.download-action .subtext {
  font-size: 0.85rem;
  color: var(--text-light);
}

.preview-mockup {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.mockup-header {
  background: var(--surface-alt);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  border-bottom: 1px solid var(--border-color);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.mockup-title {
  margin-left: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.mockup-body {
  padding: 1.5rem;
}

.mockup-pill {
  background: var(--surface-alt);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.mockup-controls {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.btn-mock {
  background: var(--surface-alt);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
}

.btn-mock.highlight {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

.mockup-response {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  padding: 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.mockup-response strong {
  color: var(--primary);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 0.3rem;
}

.mockup-response p {
  font-size: 0.9rem;
  color: var(--text-main);
  margin: 0;
}

/* ==========================================================================
   Cadastro / Newsletter
   ========================================================================== */

.signup-section {
  padding: 4rem 0;
}

.signup-box {
  background: linear-gradient(135deg, var(--primary) 0%, #1e40af 100%);
  color: #ffffff;
  padding: 3.5rem 2.5rem;
  border-radius: var(--radius-lg);
  text-align: center;
  max-width: 840px;
  margin: 0 auto;
  box-shadow: var(--shadow-xl);
}

.signup-box h2 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.signup-box p {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 580px;
  margin: 0 auto 2rem auto;
}

.signup-form {
  max-width: 500px;
  margin: 0 auto;
}

.form-group {
  display: flex;
  gap: 0.5rem;
}

.form-group input {
  flex: 1;
  padding: 0.9rem 1.25rem;
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
}

.form-feedback {
  margin-top: 1rem;
  font-weight: 600;
  min-height: 1.5rem;
}

/* ==========================================================================
   FAQ (Accordion)
   ========================================================================== */

.faq-section {
  padding: 5rem 0;
  background-color: var(--surface-alt);
}

.faq-accordion {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.2s;
}

.faq-item[open] .faq-question::after {
  content: '−';
}

.faq-answer {
  padding: 0 1.5rem 1.25rem 1.5rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Rodapé / Footer Moderno, 100% Responsivo e sem Bullets
   ========================================================================== */

.site-footer {
  background: #f8fafc;
  border-top: 1px solid #e2e8f0;
  padding: 4.5rem 0 0 0;
  margin-top: 4rem;
  color: #1e293b;
}

[data-theme="dark"] .site-footer {
  background: #0b0f19;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #f8fafc;
}

.footer-main-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.1fr 1.2fr;
  gap: 3rem;
  padding-bottom: 3.5rem;
}

.footer-col-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.02em;
}

[data-theme="dark"] .footer-logo {
  color: #ffffff;
}

.footer-logo strong {
  color: #2563eb;
}

[data-theme="dark"] .footer-logo strong {
  color: #38bdf8;
}

.footer-brand-description {
  color: #64748b;
  font-size: 0.92rem;
  line-height: 1.6;
  margin: 0;
  max-width: 360px;
}

[data-theme="dark"] .footer-brand-description {
  color: #94a3b8;
}

.footer-brand-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.25rem;
  flex-wrap: wrap;
}

.footer-domain-badge {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
}

.footer-creator-badge {
  font-size: 0.82rem;
  color: #64748b;
}

.footer-creator-badge a {
  color: #0f172a;
  text-decoration: none;
}

[data-theme="dark"] .footer-creator-badge a {
  color: #ffffff;
}

.footer-nav-title {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #0f172a;
  margin: 0 0 1.25rem 0;
}

[data-theme="dark"] .footer-nav-title {
  color: #f8fafc;
}

/* ZERO BULLETS - Strict Reset */
ul.footer-clean-list,
.footer-clean-list {
  list-style: none !important;
  list-style-type: none !important;
  padding: 0 !important;
  margin: 0 !important;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

ul.footer-clean-list li,
.footer-clean-list li {
  list-style: none !important;
  list-style-type: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.footer-clean-list a {
  text-decoration: none;
  color: #64748b;
  font-size: 0.92rem;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
}

[data-theme="dark"] .footer-clean-list a {
  color: #94a3b8;
}

.footer-clean-list a:hover {
  color: #2563eb;
  transform: translateX(3px);
}

.footer-support-card {
  margin-top: 1.5rem;
  padding: 0.9rem 1.1rem;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .footer-support-card {
  background: #111827;
  border-color: rgba(255, 255, 255, 0.1);
}

.support-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.support-email {
  color: #2563eb;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.2s;
}

.support-email:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

/* Barra Inferior */
.footer-bottom-bar {
  border-top: 1px solid #e2e8f0;
  padding: 1.75rem 0;
  background: #f1f5f9;
}

[data-theme="dark"] .footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: #080c14;
}

.footer-bottom-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.copyright-text {
  font-size: 0.875rem;
  color: #64748b;
  margin: 0;
}

[data-theme="dark"] .copyright-text {
  color: #94a3b8;
}

.footer-legal-inline {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: #64748b;
  flex-wrap: wrap;
}

.footer-legal-inline a {
  color: #64748b;
  text-decoration: none;
  transition: color 0.2s;
}

[data-theme="dark"] .footer-legal-inline a {
  color: #94a3b8;
}

.footer-legal-inline a:hover {
  color: #2563eb;
  text-decoration: underline;
}

.dot-separator {
  color: #cbd5e1;
}

/* Responsividade do Footer */
@media (max-width: 1024px) {
  .footer-main-container {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 640px) {
  .footer-main-container {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }
  .footer-bottom-flex {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Banner de Consentimento de Cookies */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 3rem);
  max-width: 860px;
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  padding: 1.15rem 1.6rem;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.6);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  animation: slideUpCookie 0.3s ease-out forwards;
}

@keyframes slideUpCookie {
  from {
    transform: translate(-50%, 30px);
    opacity: 0;
  }
  to {
    transform: translate(-50%, 0);
    opacity: 1;
  }
}

.cookie-banner-text {
  font-size: 0.875rem;
  line-height: 1.5;
  color: #cbd5e1;
  margin: 0;
}

.cookie-banner-text a {
  color: #38bdf8;
  text-decoration: underline;
  font-weight: 600;
}

.cookie-banner-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .cookie-banner {
    flex-direction: column;
    align-items: stretch;
    bottom: 1rem;
    padding: 1.15rem;
  }
  .cookie-banner-actions {
    justify-content: flex-end;
  }
}

.developer-tag {
  margin-top: 0.9rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.developer-tag a,
.creator-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
  transition: color 0.2s ease;
}

.developer-tag a:hover,
.creator-link:hover {
  text-decoration: underline;
  color: var(--primary-hover);
}

.developed-by {
  color: var(--text-muted);
}

/* ==========================================================================
   Seção de Planos e Preços - Design Premium
   ========================================================================== */

.tag-pulse {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--primary);
  margin-right: 0.45rem;
  box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
  animation: pulseDot 2s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}

@keyframes pulseDot {
  0% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.6);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 7px rgba(37, 99, 235, 0);
  }
  100% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
  }
}

.section-title-gradient {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 0.85rem;
  color: var(--text-main);
}

.pricing-section {
  padding: 6.5rem 0;
  position: relative;
  background-color: var(--bg-color);
  overflow: hidden;
}

.pricing-bg-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, rgba(56, 189, 248, 0.03) 45%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

/* Seletor Mensal / Anual */
.billing-switcher-wrapper {
  display: flex;
  justify-content: center;
  margin: 2.25rem auto 3.75rem auto;
  position: relative;
  z-index: 1;
}

.billing-switcher {
  display: inline-flex;
  align-items: center;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  padding: 0.35rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
  gap: 0.35rem;
}

.billing-tab {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.65rem 1.45rem;
  border-radius: var(--radius-full);
  font-size: 0.925rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.billing-tab:hover:not(.active) {
  color: var(--text-main);
}

.billing-tab.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.discount-pill {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: #dcfce7;
  color: #15803d;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.billing-tab.active .discount-pill {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

/* Grid de Planos */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
  position: relative;
  z-index: 1;
  margin-bottom: 4.5rem;
}

.pricing-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2.75rem 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 8px 24px -4px rgba(15, 23, 42, 0.04), 0 2px 6px -2px rgba(15, 23, 42, 0.02);
  position: relative;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 35px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.03);
  border-color: #cbd5e1;
}

/* Card Destacado (Universitário Pro) */
.pricing-card.card-featured {
  background: linear-gradient(180deg, var(--surface-color) 0%, rgba(239, 246, 255, 0.5) 100%);
  border: 2px solid var(--primary);
  box-shadow: 0 20px 45px -10px rgba(37, 99, 235, 0.22), 0 0 0 1px rgba(37, 99, 235, 0.15);
  transform: scale(1.04);
  z-index: 2;
}

.pricing-card.card-featured:hover {
  transform: scale(1.04) translateY(-6px);
  box-shadow: 0 28px 55px -10px rgba(37, 99, 235, 0.32), 0 0 0 1px rgba(37, 99, 235, 0.25);
}

.featured-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #1d4ed8, #2563eb, #38bdf8);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 0.4rem 1.15rem;
  border-radius: var(--radius-full);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.45);
  display: flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
}

.annual-badge {
  position: absolute;
  top: -13px;
  right: 1.5rem;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #047857;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.32rem 0.85rem;
  border-radius: var(--radius-full);
}

.plan-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 0.75rem;
}

.plan-category.highlight {
  color: var(--primary);
}

.plan-category.success {
  color: #059669;
}

.plan-title {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.plan-description {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.5rem;
  min-height: 44px;
}

/* Caixa de Preço */
.price-box {
  padding: 1.25rem 0 1.5rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.75rem;
}

.price-display {
  display: flex;
  align-items: baseline;
  font-weight: 800;
  color: var(--text-main);
}

.price-display .currency {
  font-size: 1.35rem;
  color: var(--text-muted);
  margin-right: 0.25rem;
}

.price-display .price-num {
  font-size: 3.5rem;
  line-height: 0.95;
  letter-spacing: -0.035em;
}

.price-display .price-cents {
  font-size: 1.75rem;
  line-height: 0.95;
}

.price-display .price-cycle {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 0.4rem;
}

.price-subtext {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-light);
  margin-top: 0.5rem;
}

.billing-annual-tag {
  color: #059669;
  font-weight: 600;
}

/* Recursos / Features */
.card-features-wrapper {
  flex-grow: 1;
  margin-bottom: 2rem;
}

.features-label {
  display: block;
  font-size: 0.775rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-light);
  margin-bottom: 1rem;
}

.features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.925rem;
  line-height: 1.45;
  color: var(--text-main);
}

.feature-item strong {
  font-weight: 700;
  color: var(--text-main);
}

.feature-item.highlighted strong {
  color: var(--primary);
}

.feature-item.disabled {
  color: var(--text-light);
  opacity: 0.6;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  min-width: 20px;
  max-width: 20px;
  min-height: 20px;
  max-height: 20px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
  overflow: hidden;
}

.feature-icon svg {
  width: 12px !important;
  height: 12px !important;
  max-width: 12px !important;
  max-height: 12px !important;
  display: block;
}

.feature-icon.check {
  background: #eff6ff;
  color: #2563eb;
}

.feature-icon.check-pro {
  background: #2563eb;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.35);
}

.feature-icon.check-success {
  background: #ecfdf5;
  color: #059669;
}

.feature-icon.cross {
  background: var(--surface-alt);
  color: var(--text-light);
}

/* Botão Premium Pro */
.btn-premium {
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 50%, #38bdf8 100%);
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px -4px rgba(37, 99, 235, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-premium:hover {
  background: linear-gradient(135deg, #1e40af 0%, #1d4ed8 50%, #0284c7 100%);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -4px rgba(37, 99, 235, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-arrow {
  transition: transform 0.2s ease;
  font-size: 1.15rem;
}

.btn-premium:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-block {
  display: flex;
  width: 100%;
  justify-content: center;
  text-align: center;
  padding: 0.9rem 1.25rem;
}

/* Pilares de Confiança */
.pricing-trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  position: relative;
  z-index: 1;
}

.trust-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  display: flex;
  gap: 1.15rem;
  align-items: flex-start;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
  transition: transform 0.2s ease;
}

.trust-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.trust-icon-box {
  font-size: 1.85rem;
  line-height: 1;
  flex-shrink: 0;
}

.trust-info h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.trust-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0;
}

/* ==========================================================================
   Responsividade Mobile & Tablets
   ========================================================================== */

@media (max-width: 960px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
    gap: 2.75rem;
  }
  
  .pricing-card.card-featured {
    transform: none;
  }

  .pricing-card.card-featured:hover {
    transform: translateY(-6px);
  }

  .pricing-trust-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
    gap: 1.25rem;
  }

  .hero-title {
    font-size: 2.4rem;
  }
  
  .download-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .footer-main-container {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 960px) {
  .desktop-only {
    display: none !important;
  }

  .mobile-menu-btn {
    display: flex !important;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 999;
  }

  .header-container {
    position: relative;
    height: 4.25rem;
  }

  .main-nav {
    display: none !important;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    background: #ffffff;
    border-bottom: 1px solid #e2e8f0;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.14);
    padding: 1.25rem 1.5rem 1.75rem 1.5rem;
    flex-direction: column;
    gap: 1rem;
    z-index: 1000;
    box-sizing: border-box;
  }

  [data-theme="dark"] .main-nav {
    background: #0f172a;
    border-bottom-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
  }

  .main-nav.mobile-active {
    display: flex !important;
    animation: slideDownMenu 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

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

  .main-nav .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
  }

  .main-nav .nav-link {
    font-size: 1.05rem;
    font-weight: 600;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    display: block;
    color: var(--text-main);
  }

  .main-nav .nav-link:hover {
    background: var(--surface-alt);
    color: var(--primary);
  }

  .mobile-nav-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
  }

  .btn-block {
    width: 100%;
    text-align: center;
    padding: 0.85rem;
    font-size: 0.95rem;
    box-sizing: border-box;
  }

  .footer-main-container {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }
}

@media (max-width: 640px) {

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .hero-cta-group {
    flex-direction: column;
  }

  .form-group {
    flex-direction: column;
  }

  .demo-player-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .player-left {
    flex-direction: column;
  }

  .player-right {
    justify-content: space-between;
  }
}