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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  background-size: 400% 400%;
  animation: dynamicGradient 18s ease infinite;
  background-attachment: fixed;
}

[data-theme="light"] body {
  background-image: linear-gradient(
    315deg,
    rgba(238, 242, 255, 0.95) 3%,
    rgba(224, 242, 254, 0.95) 38%,
    rgba(236, 254, 255, 0.92) 68%,
    rgba(253, 242, 248, 0.92) 98%
  );
}

[data-theme="dark"] body {
  background-image: linear-gradient(
    315deg,
    rgba(26, 7, 36, 0.98) 3%,
    rgba(12, 35, 64, 0.98) 38%,
    rgba(8, 44, 56, 0.98) 68%,
    rgba(35, 14, 26, 0.98) 98%
  );
}

@keyframes dynamicGradient {
  0% {
    background-position: 0% 0%;
  }
  50% {
    background-position: 100% 100%;
  }
  100% {
    background-position: 0% 0%;
  }
}

/* Container Fixo de Ondas no Fundo (Background Canvas) */
.presentation-bg-waves {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.presentation-bg-waves .wave {
  border-radius: 1000% 1000% 0 0;
  position: fixed;
  width: 200%;
  height: 13em;
  animation: waveMotion 12s -3s linear infinite;
  transform: translate3d(0, 0, 0);
  bottom: 0;
  left: 0;
  z-index: 0;
  will-change: transform;
}

/* Modo Claro: Ondas em Véu Branco Glassmorphism */
[data-theme="light"] .presentation-bg-waves .wave {
  background: rgba(255, 255, 255, 0.45);
  opacity: 0.85;
}

[data-theme="light"] .presentation-bg-waves .wave:nth-of-type(2) {
  bottom: -1.25em;
  animation: waveMotion 18s linear reverse infinite;
  background: rgba(255, 255, 255, 0.32);
  opacity: 0.8;
}

[data-theme="light"] .presentation-bg-waves .wave:nth-of-type(3) {
  bottom: -2.5em;
  animation: waveMotion 22s -2s reverse infinite;
  background: rgba(255, 255, 255, 0.22);
  opacity: 0.9;
}

/* Modo Escuro: Brilho Cósmico Sutil (Azul, Ciano, Violeta) */
[data-theme="dark"] .presentation-bg-waves .wave {
  background: rgba(99, 102, 241, 0.08);
  opacity: 0.85;
}

[data-theme="dark"] .presentation-bg-waves .wave:nth-of-type(2) {
  bottom: -1.25em;
  animation: waveMotion 18s linear reverse infinite;
  background: rgba(14, 165, 233, 0.06);
  opacity: 0.8;
}

[data-theme="dark"] .presentation-bg-waves .wave:nth-of-type(3) {
  bottom: -2.5em;
  animation: waveMotion 22s -2s reverse infinite;
  background: rgba(139, 92, 246, 0.05);
  opacity: 0.9;
}

@keyframes waveMotion {
  0% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-25%);
  }
  50% {
    transform: translateX(-50%);
  }
  75% {
    transform: translateX(-25%);
  }
  100% {
    transform: translateX(0);
  }
}

/* Elevação do Conteúdo Principal sobre o Fundo */
main {
  position: relative;
  z-index: 1;
}

/* Tipografia */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--text-main);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
}

/* Container Responsivo */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Badges e Pílulas */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.badge-secondary {
  background: rgba(14, 165, 233, 0.12);
  color: var(--secondary);
  border: 1px solid rgba(14, 165, 233, 0.25);
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--gradient-primary);
  color: #ffffff !important;
  box-shadow: 0 4px 14px 0 rgba(79, 70, 229, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4338ca 0%, #6d28d9 100%);
  box-shadow: 0 6px 20px 0 rgba(79, 70, 229, 0.45);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-main) !important;
  border: 1px solid var(--border-hover);
}

.btn-outline:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--primary);
  color: var(--primary) !important;
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  color: var(--text-main) !important;
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-subtle);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 1.1rem 2.25rem;
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
}

/* Gradientes de Texto */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-accent-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Responsividade Base */
@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  .container {
    padding: 0 1.25rem;
  }
  .btn-lg {
    padding: 0.95rem 1.75rem;
    font-size: 1rem;
    width: 100%;
  }
}