html {
  scroll-behavior: smooth;
}

.bg-grid {
  background-size: 44px 44px;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}

html.dark .bg-grid {
  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);
}

.glass-panel {
  background: rgba(15, 16, 32, 0.6);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.tech-gradient-text {
  background: linear-gradient(120deg, #ffffff 0%, #00f0ff 35%, #8b5cf6 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.product-card {
  position: relative;
  background: #ffffff;
  border: 1px solid rgba(26, 26, 24, 0.05);
  box-shadow: 0 14px 32px -26px rgba(26, 26, 24, 0.45);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.product-card:hover {
  transform: translateY(-2px);
  border-color: rgba(26, 26, 24, 0.08);
  box-shadow: 0 16px 36px -30px rgba(26, 26, 24, 0.4);
}

.card-hidden {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.card-visible {
  opacity: 1;
  transform: translateY(0);
}

.product-tag {
  background: rgba(0, 58, 131, 0.1);
  border: 1px solid rgba(0, 58, 131, 0.3);
  color: #003a83;
}

.price-pill {
  background: rgba(26,26,24,0.03);
  border: 1px solid rgba(26,26,24,0.08);
}

.bg-card-individual {
  background-image: url("img/livro_individual.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #f5f0e8;
  background-blend-mode: multiply;
}

.bg-card-box {
  background-image: url("img/box_trilogia.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #f5f0e8;
  background-blend-mode: multiply;
}

.bg-card-premium {
  background-image: url("img/box_premium.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #f5f0e8;
  background-blend-mode: multiply;
}

.bg-schools {
  background-image: url("img/escolas.jpg");
}

.btn-primary {
  position: relative;
  overflow: hidden;
  background-color: #f59e0b;
  color: #1a1a18;
  border: 2px solid #f59e0b; /* Thicker orange border */
  font-weight: 600;
  transition: all 0.2s ease-in-out;
  box-shadow: none;
}

.btn-primary:hover {
  background-color: #d97706;
  border-color: #d97706;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
}

.faq-grid {
  min-height: auto;
}

.faq-body {
  height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-6px);
  transition: height 280ms ease, opacity 240ms ease, transform 240ms ease;
}

details[open] .faq-body {
  opacity: 1;
  transform: translateY(0);
}

.bg-paper-texture {
  /* textura bem sutil (sem “cara de site tech”) */
  background-image:
    radial-gradient(circle at 15% 20%, rgba(0,0,0,0.06), transparent 35%),
    radial-gradient(circle at 85% 35%, rgba(0,0,0,0.045), transparent 40%),
    radial-gradient(circle at 40% 90%, rgba(0,0,0,0.035), transparent 45%);
}

.hero-bg {
  background-image: url('img/hero.jpg');
  background-size: cover;
  background-position: center calc(50% + 30px);
  background-repeat: no-repeat;
}

.hero-highlight {
  animation: heroGlow 4s ease-in-out infinite;
}

@keyframes heroGlow {
  0%,
  100% {
    color: rgba(255, 255, 255, 0.7);
    text-shadow: 0 0 0 rgba(245, 158, 11, 0);
  }
  50% {
    color: rgba(255, 255, 255, 1);
    text-shadow: 0 0 18px rgba(245, 158, 11, 0.35);
  }
}

.porta-fundo-bg {
  position: absolute;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.bg-porta-fundo-1 {
  background-image: url('img/porta_fundo.png');
}

.bg-porta-fundo-2 {
}

.porta-fundo-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('img/porta_fundo_2.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  pointer-events: none;
}

.porta-fundo-bg.bg-porta-fundo-2::after {
  opacity: 1;
}

.subtitle-part {
  transition: color 1s ease-in-out;
}

#colecao.subtitle-visible .subtitle-part {
  color: #fafaf8;
}

.title-main {
  font-size: 1.2em;
  line-height: 1.1;
}

.title-sub {
  font-size: 0.9em;
  font-weight: 500;
  opacity: 0.9;
}

.escolas-bg {
  background-image: url('img/escolas_bg.jpg');
  background-size: cover;
  background-position: center 90%;
  background-repeat: no-repeat;
}

.escolas-overlay {
  opacity: 0;
  transition: opacity 0.8s ease;
}

.escolas-overlay.is-visible {
  opacity: 1;
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.revealed {
  opacity: 1;
  transform: translateX(0);
}

#depoimentos h3 {
  color: #f59e0b;
}

.final-cta-bg {
  background-image: url('img/as_conversas.jpg');
  background-repeat: no-repeat;
  background-position: 30% center;
  background-size: contain;
}

.final-cta-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('img/as_conversas_2.jpg');
  background-repeat: no-repeat;
  background-position: 30% center;
  background-size: contain;
  opacity: 0;
  transition: opacity 1.6s ease-in-out;
  pointer-events: none;
}

.final-cta-bg.final-cta-bg-2::before {
  opacity: 1;
}

.final-cta-bg.is-leaving {
  transition-duration: 0.9s;
}

.final-cta-bg.is-leaving::before {
  transition-duration: 0.9s;
}