/* ==========================================================================
   ChapterIA — Estilos das seções e componentes
   ========================================================================== */

/* ==========================================================================
   Navbar
   ========================================================================== */

.navbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background var(--t-base), border-color var(--t-base),
              backdrop-filter var(--t-base);
  border-bottom: 1px solid transparent;
}

.navbar.is-scrolled {
  background: rgba(6, 16, 26, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border-soft);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.navbar__links a {
  font-size: var(--fs-small);
  color: var(--text-muted);
  transition: color var(--t-fast);
}

.navbar__links a:hover { color: var(--text-strong); }

.navbar__cta { margin-left: var(--space-2); }

/* -- Logo (improviso enquanto o definitivo não chega) -------------------- */
.logo {
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #ffffff;
  display: inline-flex;
  align-items: baseline;
  gap: 0.08em;
}

.logo__ia {
  color: var(--color-light-blue); /* #5AA5CD */
}

/* -- Toggle mobile ------------------------------------------------------- */
.navbar__toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
  position: relative;
}

.navbar__toggle span,
.navbar__toggle span::before,
.navbar__toggle span::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 20px;
  height: 2px;
  background: var(--text-strong);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: transform var(--t-fast), opacity var(--t-fast);
}

.navbar__toggle span { top: 50%; transform: translate(-50%, -50%); }
.navbar__toggle span::before { top: -6px; }
.navbar__toggle span::after { top: 6px; }

.navbar__toggle.is-open span { background: transparent; }
.navbar__toggle.is-open span::before { transform: translateX(-50%) rotate(45deg); top: 0; }
.navbar__toggle.is-open span::after  { transform: translateX(-50%) rotate(-45deg); top: 0; }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: 120px var(--space-7);
}

.hero__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

/* overlay gradiente preto para leitura dos textos */
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(4, 10, 16, 0.55) 0%, rgba(4, 10, 16, 0.35) 35%, rgba(6, 16, 26, 0.92) 100%),
    linear-gradient(90deg, rgba(4, 10, 16, 0.85) 0%, rgba(4, 10, 16, 0.25) 60%, transparent 100%);
}

.hero__content {
  max-width: 760px;
}

.hero h1 {
  font-size: var(--fs-display);
  line-height: var(--lh-tight);
  margin-top: var(--space-3);
}

.hero__h2 {
  font-size: var(--fs-h2);
  font-weight: 500;
  color: var(--text-strong);
  margin-top: var(--space-3);
  max-width: 56ch;
}

.hero__desc {
  margin-top: var(--space-3);
  color: var(--text-base);
  max-width: 56ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.hero__note {
  margin-top: var(--space-3);
  font-size: var(--fs-small);
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.hero__note::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-cyan);
  box-shadow: var(--glow-subtle);
}

/* ==========================================================================
   Bloco 2 — Dores (grid de cards)
   ========================================================================== */

.grid {
  display: grid;
  gap: var(--space-3);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.pain-card h3 {
  font-size: var(--fs-h3);
  margin-bottom: var(--space-1);
}

.pain-card__num {
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-cyan);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: var(--space-2);
}

.pain-card p { color: var(--text-muted); font-size: var(--fs-small); }

/* ==========================================================================
   Bloco 3 / 5 / 6 — listas de benefícios
   ========================================================================== */

.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
}

.check-list { display: grid; gap: var(--space-2); }

.check-list li {
  position: relative;
  padding-left: 2.1rem;
  color: var(--text-base);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  width: 1.3rem;
  height: 1.3rem;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid var(--border-glow);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2327E6EC' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 0.75rem;
}

/* lista negativa (bloco 6 — "não é para") */
.cross-list li::before {
  border-color: rgba(111, 113, 161, 0.55);
  background-color: rgba(111, 113, 161, 0.12);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236F71A1' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='18' y1='6' x2='6' y2='18'/%3E%3Cline x1='6' y1='6' x2='18' y2='18'/%3E%3C/svg%3E");
}

.sub-heading {
  font-size: var(--fs-h3);
  margin-bottom: var(--space-3);
  color: var(--text-strong);
}

/* painel destacado (lado direito de blocos split) */
.panel {
  background: var(--gradient-cta-block);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

/* ==========================================================================
   Bloco 4 — Capítulos (cards com thumbnail de vídeo)
   ========================================================================== */

.chapters-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.chapter-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}

.chapter-card__thumb {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-700);
}

.chapter-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow);
}

.chapter-card:hover .chapter-card__thumb img { transform: scale(1.05); }

.chapter-card__thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(6, 16, 26, 0.65) 100%);
}

.chapter-card__play {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
}

.chapter-card__play span {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(6, 16, 26, 0.55);
  border: 1px solid var(--border-glow);
  display: grid;
  place-items: center;
  backdrop-filter: blur(4px);
  transition: transform var(--t-base), box-shadow var(--t-base), background var(--t-base);
}

.chapter-card__play span::before {
  content: "";
  width: 0; height: 0;
  border-style: solid;
  border-width: 9px 0 9px 15px;
  border-color: transparent transparent transparent var(--color-cyan);
  margin-left: 4px;
}

.chapter-card:hover .chapter-card__play span {
  transform: scale(1.08);
  background: rgba(24, 163, 183, 0.35);
  box-shadow: var(--glow-cyan);
}

/* player embutido (substitui a thumbnail ao clicar) */
.chapter-card__player {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
}

.chapter-card__player iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.chapter-card__body { padding: var(--space-3) var(--space-4) var(--space-4); }

.chapter-card__tag {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cyan);
}

.chapter-card__body h3 {
  font-size: var(--fs-h3);
  margin: 0.4rem 0 var(--space-2);
}

.chapter-card__body p { color: var(--text-muted); font-size: var(--fs-small); }

.chapter-card--bonus .chapter-card__tag { color: var(--color-purple); }

/* ==========================================================================
   Bloco 7 — Quem está por trás
   ========================================================================== */

.author {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-6);
  align-items: center;
}

.author__visual {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  background:
    radial-gradient(120% 90% at 30% 10%, rgba(24,163,183,0.28), transparent 60%),
    var(--gradient-deep);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.author__visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 22%; /* favorece o rosto no recorte 4:5 */
}

/* leve gradiente de leitura + tom da marca sobre a foto */
.author__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 55%, rgba(6, 16, 26, 0.55) 100%),
    linear-gradient(135deg, rgba(24, 163, 183, 0.10), transparent 55%);
  pointer-events: none;
}

.author__body p { color: var(--text-muted); margin-top: var(--space-2); }
.author__body p:first-of-type { margin-top: var(--space-3); }
.author__body .sub-heading { margin-top: var(--space-4); margin-bottom: var(--space-1); }

/* ==========================================================================
   Bloco 8 — Ferramentas (chips)
   ========================================================================== */

.tools-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: var(--space-2);
}

.tool-chip {
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  background: var(--surface-faint);
  color: var(--text-base);
  font-size: var(--fs-small);
  font-weight: 500;
  transition: border-color var(--t-fast), color var(--t-fast), transform var(--t-fast);
}

.tool-chip:hover {
  border-color: var(--border-glow);
  color: var(--text-strong);
  transform: translateY(-2px);
}

.tool-chip--more {
  background: var(--accent-soft);
  border-color: var(--border-glow);
  color: var(--color-cyan);
}

/* ==========================================================================
   Bloco 9 — Chamada final
   ========================================================================== */

.final-cta {
  position: relative;
  overflow: hidden;
}

.final-cta__inner {
  position: relative;
  text-align: center;
  background: var(--gradient-cta-block);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(3rem, 7vw, 6rem) var(--gutter);
  overflow: hidden;
}

.final-cta__inner::before {
  content: "";
  position: absolute;
  width: 540px; height: 540px;
  top: -260px; left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(39,230,236,0.20), transparent 60%);
  pointer-events: none;
}

.final-cta h2 { font-size: var(--fs-display); line-height: var(--lh-tight); }
.final-cta .section-subtitle { margin-inline: auto; }
.final-cta__desc { margin: var(--space-3) auto 0; max-width: 60ch; color: var(--text-base); }
.final-cta__actions { margin-top: var(--space-4); }
.final-cta__note { margin-top: var(--space-3); font-size: var(--fs-small); color: var(--text-muted); }

/* ==========================================================================
   Bloco 10 — FAQ (accordion)
   ========================================================================== */

.faq-list {
  max-width: 820px;
  margin-inline: auto;
  display: grid;
  gap: var(--space-2);
}

.faq-item {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  background: var(--surface-faint);
  overflow: hidden;
  transition: border-color var(--t-base);
}

.faq-item.is-open { border-color: var(--border-strong); }

.faq-item__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--fs-h3);
  font-weight: 500;
  color: var(--text-strong);
}

.faq-item__icon {
  flex-shrink: 0;
  width: 22px; height: 22px;
  position: relative;
}

.faq-item__icon::before,
.faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 12px; height: 2px;
  background: var(--color-cyan);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform var(--t-base);
}

.faq-item__icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item.is-open .faq-item__icon::after { transform: translate(-50%, -50%) rotate(0); }

.faq-item__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--t-base);
}

.faq-item__a p {
  padding: 0 var(--space-4) var(--space-4);
  color: var(--text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  border-top: 1px solid var(--border-soft);
  padding-block: var(--space-6) var(--space-4);
  background: rgba(6, 16, 26, 0.5);
}

.footer__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.footer__tagline {
  color: var(--text-muted);
  max-width: 36ch;
  margin-top: var(--space-2);
  font-size: var(--fs-small);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__nav a {
  font-size: var(--fs-small);
  color: var(--text-muted);
  transition: color var(--t-fast);
}
.footer__nav a:hover { color: var(--text-strong); }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-soft);
  font-size: var(--fs-small);
  color: var(--text-faint);
}

/* ==========================================================================
   Modal de captura de lead
   ========================================================================== */

.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--gutter);
}

.modal.is-open { display: flex; }

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 10, 16, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: modal-fade var(--t-base);
}

.modal__dialog {
  position: relative;
  width: 100%;
  max-width: 460px;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(24, 163, 183, 0.18), transparent 60%),
    var(--bg-700);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 2.5rem);
  box-shadow: var(--shadow-lg), var(--glow-subtle);
  animation: modal-pop var(--t-base);
}

.modal__close {
  position: absolute;
  top: 0.9rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--text-muted);
  transition: color var(--t-fast), background var(--t-fast);
}

.modal__close:hover { color: var(--text-strong); background: rgba(255,255,255,0.05); }

.modal__title { font-size: var(--fs-h1); margin-top: var(--space-2); }
.modal__desc { color: var(--text-muted); margin-top: var(--space-1); font-size: var(--fs-small); }

.modal__form {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.field { display: grid; gap: 0.45rem; }

.field label {
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--text-base);
}

.field input {
  width: 100%;
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  background: rgba(6, 16, 26, 0.6);
  border: 1px solid var(--border-soft);
  color: var(--text-strong);
  font-size: 1rem;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

.field input::placeholder { color: var(--text-faint); }

.field input:focus {
  outline: none;
  border-color: var(--border-glow);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.field input.is-invalid {
  border-color: rgba(255, 107, 107, 0.7);
}

.field__error {
  font-size: 0.78rem;
  color: #ff8b8b;
  min-height: 0;
}

.modal__status {
  font-size: var(--fs-small);
  text-align: center;
  margin: 0;
  min-height: 0;
}
.modal__status:empty { display: none; }
.modal__status.is-error { color: #ff8b8b; }
.modal__status.is-success { color: var(--color-cyan); }

.modal__submit { width: 100%; margin-top: var(--space-1); }

.modal__note {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 0.25rem;
}

@keyframes modal-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modal-pop {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .modal__backdrop, .modal__dialog { animation: none; }
}

/* ==========================================================================
   Responsivo
   ========================================================================== */

@media (max-width: 900px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: 1fr; }
  .feature-split { grid-template-columns: 1fr; gap: var(--space-4); }
  .author { grid-template-columns: 1fr; gap: var(--space-4); }
  .author__visual { max-width: 360px; }
  .chapters-grid { grid-template-columns: 1fr; }

  .navbar__links {
    position: fixed;
    inset: 76px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(6, 16, 26, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-soft);
    padding: var(--space-2) var(--gutter) var(--space-4);
    transform: translateY(-130%);
    transition: transform var(--t-base);
  }
  .navbar__links.is-open { transform: translateY(0); }
  .navbar__links a { padding: var(--space-2) 0; border-bottom: 1px solid var(--border-soft); }
  .navbar__cta { margin: var(--space-2) 0 0; }
  .navbar__toggle { display: block; }
}

@media (max-width: 560px) {
  .grid--4, .grid--2 { grid-template-columns: 1fr; }
  .hero__actions .btn { width: 100%; }
}