/* ============================================================
   Luminous Naïf — Câncer: A Rede Invisível do Amor
   ============================================================ */

:root {
  /* Surfaces */
  --surface: #fcf9f6;
  --surface-dim: #dcdad7;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f6f3f0;
  --surface-container: #f0edea;
  --surface-container-high: #eae8e5;
  --surface-container-highest: #e5e2df;

  /* Text */
  --on-surface: #1c1c1a;
  --on-surface-variant: #5b403f;
  --inverse-surface: #31302f;
  --inverse-on-surface: #f3f0ed;

  /* Lines */
  --outline: #8f6f6e;
  --outline-variant: #e4bebc;

  /* Brand */
  --primary: #b7102a;
  --primary-container: #db313f;
  --on-primary: #ffffff;
  --secondary: #ffb702;
  --on-secondary-container: #6b4b00;
  --tertiary: #00657a;

  /* Shape */
  --radius-sm: 0.125rem;
  --radius: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* Layout */
  --container-max: 1120px;
  --gutter: 24px;
  --section-pad: 120px;

  /* Type */
  --font: 'Epilogue', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
}

/* ------------------------- Reset ------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--on-surface);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, p { margin: 0; }

/* ------------------------- Layout ------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container.narrow { max-width: 720px; }
.center { text-align: center; }

.section { padding-block: var(--section-pad); }

.section-head {
  text-align: center;
  margin-bottom: 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.rule {
  width: 56px;
  height: 3px;
  background: var(--secondary);
  border-radius: var(--radius-full, 9999px);
}

/* ------------------------- Typography -------------------- */
.display {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0;
}

.headline {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
}

.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
}
.eyebrow--gold { color: var(--on-secondary-container); }

.lead {
  font-size: 20px;
  color: var(--on-surface-variant);
  max-width: 46ch;
}
.lead-muted {
  font-size: 18px;
  color: var(--on-surface-variant);
  margin: 16px auto 32px;
  max-width: 56ch;
}

/* ------------------------- Buttons ----------------------- */
.btn {
  --offset: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 26px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
  transform: translateY(var(--offset));
}
.btn:hover { --offset: -2px; }
.btn:active { --offset: 0; }

.btn-sm { padding: 10px 20px; }
.btn-block { width: 100%; }

.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-container); }

.btn-outline {
  background: transparent;
  color: var(--on-surface);
  border-color: var(--outline-variant);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.btn-dark { background: var(--inverse-surface); color: var(--inverse-on-surface); }
.btn-dark:hover { background: var(--on-surface); }

/* ------------------------- Header ------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(252, 249, 246, 0.92);
  border-bottom: 1px solid var(--surface-container-high);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}
.brand { max-width: 60%; }

/* Compact title lockup (header + footer) */
.brand-lockup {
  display: flex;
  flex-direction: column;
  gap: 1px;
  line-height: 1;
}
.brand-lockup__main {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--primary);
}
.brand-lockup__sub {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 500;
  font-style: italic;
  letter-spacing: 0.04em;
  color: var(--on-surface);
}
.brand-lockup__sub strong {
  font-weight: 700;
  font-style: normal;
  text-transform: uppercase;
  color: var(--primary);
}
.brand-lockup--sm .brand-lockup__main { font-size: 21px; }
.brand-lockup--sm .brand-lockup__sub { font-size: 10px; }
.nav { display: flex; gap: 32px; }
.nav a {
  font-size: 15px;
  color: var(--on-surface-variant);
  transition: color .2s ease;
}
.nav a:hover { color: var(--primary); }

.header-actions { display: flex; align-items: center; gap: 16px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 22px;
  background: var(--on-surface);
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------- Hero -------------------------- */
.hero { padding-block: clamp(56px, 8vw, 96px); }
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}
.hero-media img {
  width: 100%;
  border-radius: var(--radius-xl);
  border: 1px solid var(--surface-container-high);
}
.hero-copy { display: flex; flex-direction: column; gap: 24px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 8px; }

/* Book title (capa-style lockup) */
.book-title {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
}
.book-title__main {
  font-family: var(--font-display);
  font-size: clamp(54px, 8.4vw, 92px);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: 0.005em;
  text-transform: uppercase;
  color: var(--primary);
}
.book-title__sub {
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 32px);
  font-weight: 500;
  font-style: italic;
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--on-surface);
}
.book-title__sub strong {
  font-weight: 800;
  font-style: normal;
  text-transform: uppercase;
  color: var(--primary);
}

/* ------------------------- Cards (synopsis) -------------- */
.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
}
.card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--surface-container-high);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.card-icon {
  width: 44px;
  height: 44px;
  color: var(--primary);
}
.card-icon svg { width: 100%; height: 100%; }
.card-title { font-size: 22px; font-weight: 600; }
.card p { color: var(--on-surface-variant); font-size: 15px; }

/* ------------------------- Split (art) ------------------- */
.section-art { background: var(--surface-container-low); }
.split {
  display: grid;
  grid-template-columns: 0.85fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}
.split-media img {
  width: 100%;
  border-radius: var(--radius-xl);
  border: 1px solid var(--outline-variant);
}
.split-copy { display: flex; flex-direction: column; gap: 18px; }
.split-copy p { color: var(--on-surface-variant); font-size: 17px; }

.quote {
  margin: 12px 0 0;
  padding: 22px 26px;
  background: var(--secondary);
  border-left: 4px solid var(--on-secondary-container);
  border-radius: var(--radius);
  font-size: 17px;
  font-style: italic;
  font-weight: 500;
  color: #4a3500;
}

/* ------------------------- Conteúdos exclusivos ---------- */
.section-exclusive { background: var(--surface-container); }
.qr-card {
  display: inline-flex;
  padding: 18px;
  margin-bottom: 36px;
  background: var(--surface-container-lowest);
  border: 1px solid var(--surface-container-high);
  border-radius: var(--radius-xl);
}
.qr-frame {
  width: 150px;
  height: 150px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1.5px dashed var(--outline-variant);
  border-radius: var(--radius-lg);
  color: var(--surface-dim);
}
.qr-frame svg { width: 64px; height: 64px; }
.qr-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
}

/* ------------------------- Equipe ------------------------ */
.team {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 4vw, 56px);
  text-align: center;
}
.member { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.member-photo {
  width: 132px;
  height: 132px;
  margin-bottom: 10px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.member-photo img { width: 100%; height: 100%; object-fit: cover; }
.member-photo--framed {
  padding: 5px;
  border: 2px solid var(--primary);
}
.member-photo--framed img { border-radius: var(--radius); }
.member-photo--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-container-high);
  color: var(--on-surface-variant);
}
.member-photo--placeholder svg { width: 48px; height: 48px; }
.member-name { font-size: 18px; font-weight: 700; }
.member-role {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
}
.member-bio { font-size: 15px; color: var(--on-surface-variant); max-width: 30ch; }

/* ------------------------- CTA / Form -------------------- */
.cta {
  background: var(--primary);
  background-image: radial-gradient(circle at 80% 20%, var(--primary-container), var(--primary));
  color: var(--on-primary);
}
.display--light { color: var(--on-primary); margin-bottom: 40px; }

/* Two-column purchase layout: physical form + digital QR */
.purchase-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
  max-width: 920px;
  margin-inline: auto;
  text-align: left;
}

.order-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  border-top: 6px solid var(--secondary);
  padding: 40px;
  text-align: left;
  color: var(--on-surface);
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 24px 60px -30px rgba(0,0,0,0.4);
}
.order-card .eyebrow { text-align: center; }

.field { display: flex; flex-direction: column; gap: 7px; }
.field label {
  font-size: 13px;
  font-weight: 700;
  color: var(--on-surface);
}
.field input,
.field textarea {
  font-family: var(--font);
  font-size: 15px;
  color: var(--on-surface);
  padding: 13px 14px;
  background: var(--surface-container-lowest);
  border: 1px solid var(--surface-dim);
  border-radius: var(--radius);
  resize: vertical;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field input::placeholder,
.field textarea::placeholder { color: #9a9794; }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(183, 16, 42, 0.12);
}

.order-card .btn-primary { margin-top: 6px; }

/* Digital book / QR card (next to the form) */
.digital-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  border-top: 6px solid var(--secondary);
  padding: 40px 32px;
  color: var(--on-surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  text-align: center;
  box-shadow: 0 24px 60px -30px rgba(0,0,0,0.4);
}
.qr-card--digital { margin-bottom: 0; }
.digital-note {
  font-size: 16px;
  font-weight: 600;
  color: var(--on-surface-variant);
  max-width: 24ch;
}

.form-feedback {
  margin: 4px 0 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--tertiary);
  text-align: center;
}

.cta-note {
  margin-top: 32px;
  font-size: 15px;
  font-style: italic;
  color: rgba(255, 255, 255, 0.82);
  max-width: 52ch;
  margin-inline: auto;
}

/* ------------------------- Páginas internas (legal / contato) -------- */
.page-head {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 48px;
}
.page-head .headline { font-size: clamp(34px, 5vw, 52px); }
.updated {
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--on-surface-variant);
}

.prose {
  color: var(--on-surface-variant);
  font-size: 16px;
  line-height: 1.7;
}
.prose h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--on-surface);
  margin: 36px 0 12px;
}
.prose p { margin: 0 0 14px; }
.prose ul { margin: 0 0 16px; padding-left: 22px; }
.prose li { margin-bottom: 8px; }
.prose em { color: var(--on-surface); font-style: italic; }
.prose a { color: var(--primary); font-weight: 600; }
.prose a:hover { text-decoration: underline; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 44px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--primary);
  transition: gap .2s ease;
}
.back-link:hover { gap: 12px; }

.contact-alt {
  margin-top: 24px;
  text-align: center;
  font-size: 15px;
  color: var(--on-surface-variant);
}
.contact-alt a { color: var(--primary); font-weight: 700; }
.contact-alt a:hover { text-decoration: underline; }

/* ------------------------- Footer ------------------------ */
.site-footer {
  background: var(--surface-container-low);
  border-top: 1px solid var(--surface-container-high);
  padding-block: 32px;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
}
.footer-brand { font-weight: 700; color: var(--primary); }
.footer-nav { display: flex; gap: 28px; }
.footer-nav a { font-size: 14px; color: var(--on-surface-variant); }
.footer-nav a:hover { color: var(--primary); }
.footer-copy { font-size: 13px; color: var(--on-surface-variant); }
.footer-logo {
  height: 26px;
  width: auto;
  margin-left: auto;
  opacity: 0.6;
}

/* ------------------------- Responsive -------------------- */
@media (max-width: 900px) {
  :root { --section-pad: 72px; }

  .nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--surface-container-high);
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .nav.open { max-height: 280px; }
  .nav a { padding: 16px 24px; border-top: 1px solid var(--surface-container-high); }
  .nav-toggle { display: flex; }

  .hero-grid { grid-template-columns: 1fr; }
  .hero-media { order: -1; max-width: 420px; margin-inline: auto; }
  .hero-copy { align-items: flex-start; }

  .cards-3 { grid-template-columns: 1fr; }
  .purchase-grid { grid-template-columns: 1fr; max-width: 480px; }
  .split { grid-template-columns: 1fr; }
  .split-media { max-width: 440px; margin-inline: auto; }
  .team { grid-template-columns: 1fr; max-width: 360px; margin-inline: auto; }
}

@media (max-width: 560px) {
  :root { --gutter: 20px; }
  .brand { font-size: 15px; max-width: 58%; }
  .header-actions .btn-sm { display: none; }
  .order-card { padding: 28px 22px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-logo { margin-left: 0; }
}