/* =========================================================
   Henrique Santos — Portfólio de Autor
   Paleta sóbria, tipografia elegante, mobile-first
   ========================================================= */

:root {
  --color-bg: #faf8f4;
  --color-bg-alt: #f1ece2;
  --color-surface: #ffffff;
  --color-text: #22242b;
  --color-text-muted: #62636d;
  --color-line: #e4ddce;

  --color-accent: #a8763e;
  --color-accent-dark: #8a5f2e;
  --color-dark: #1c1e24;
  --color-dark-2: #14151a;

  --font-serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --container: 1140px;
  --radius: 14px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #15161b;
    --color-bg-alt: #1b1d23;
    --color-surface: #1e2027;
    --color-text: #ece9e2;
    --color-text-muted: #a2a3ab;
    --color-line: #2d2f37;

    --color-accent: #c79a56;
    --color-accent-dark: #dcb06c;
    --color-dark: #0f1013;
    --color-dark-2: #0b0c0e;
  }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, p { margin: 0; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-dark);
  color: #fff;
  padding: 12px 18px;
  z-index: 1000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

.nav {
  display: none;
  gap: 32px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  padding: 6px 0;
  transition: color 0.3s var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible { color: var(--color-text); }
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--color-accent);
  transition: width 0.3s var(--ease);
}
.nav-link:hover::after { width: 100%; }

.menu-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (min-width: 760px) {
  .nav {
    display: flex;
    position: static;
    height: auto;
    background: none;
    box-shadow: none;
    flex-direction: row;
    align-items: center;
    padding: 0;
  }
  .menu-toggle { display: none; }
}

@media (max-width: 759px) {
  .nav {
    display: flex;
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    flex-direction: column;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    padding: 12px 20px 24px;
    gap: 4px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
  }
  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-link { display: block; padding: 12px 4px; font-size: 1rem; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 64px;
}

.hero-inner { position: relative; z-index: 2; text-align: center; }

.eyebrow,
.section-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2.6rem, 10vw, 5rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.hero-tagline {
  margin: 22px auto 0;
  max-width: 520px;
  font-size: 1.08rem;
  color: var(--color-text-muted);
}

.hero-actions {
  margin-top: 38px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.hero-ornament {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(600px 400px at 15% 15%, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 70%),
    radial-gradient(700px 500px at 85% 85%, color-mix(in srgb, var(--color-accent) 10%, transparent), transparent 70%);
  pointer-events: none;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  font-size: 0.94rem;
  font-weight: 600;
  border-radius: 999px;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--color-dark);
  color: var(--color-bg);
}
.btn-primary:hover { background: var(--color-accent-dark); }

.btn-ghost {
  border-color: var(--color-line);
  color: var(--color-text);
}
.btn-ghost:hover { border-color: var(--color-accent); color: var(--color-accent-dark); }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-heading { text-align: center; max-width: 620px; margin: 0 auto 56px; }

.section-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1.15;
}

.section-subtitle {
  margin-top: 14px;
  color: var(--color-text-muted);
  font-size: 1.02rem;
}

/* ---------- Sobre ---------- */
.about-grid {
  display: grid;
  gap: 48px;
  align-items: center;
}

@media (min-width: 760px) {
  .about-grid { grid-template-columns: 300px 1fr; gap: 64px; }
}

.about-portrait { display: flex; justify-content: center; }

.portrait-frame {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  overflow: hidden;
  background: linear-gradient(150deg, var(--color-dark), var(--color-accent-dark));
  box-shadow: 0 24px 48px -20px color-mix(in srgb, var(--color-dark) 55%, transparent);
}
.portrait-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.about-text {
  color: var(--color-text-muted);
  margin-top: 16px;
  font-size: 1.02rem;
}
.about-text:first-of-type { margin-top: 4px; }

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.about-tags span {
  font-size: 0.82rem;
  font-weight: 500;
  padding: 8px 16px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-text-muted);
}

/* ---------- Livros ---------- */
/* auto-fit + justify-content: quantidade de colunas se ajusta sozinha
   conforme livros são adicionados, sem precisar mexer no CSS depois */
.books-grid {
  display: grid;
  gap: 32px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 320px));
  justify-content: center;
}

.book-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.book-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 50px -30px color-mix(in srgb, var(--color-dark) 40%, transparent);
}

.book-cover {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: linear-gradient(155deg, var(--cover-a, #2b2f3a), var(--cover-b, #4a3a2a));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* .book-cover também é um <button> nos livros com capa real: zera estilos nativos */
button.book-cover-trigger {
  position: relative;
  border: none;
  margin: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.book-cover-zoom {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  background: color-mix(in srgb, var(--color-dark) 35%, transparent);
  transition: opacity 0.3s var(--ease);
}
.book-cover-zoom svg {
  width: 24px;
  height: 24px;
  color: #fff;
  padding: 12px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-dark) 55%, transparent);
  transform: translateY(6px);
  transition: transform 0.3s var(--ease);
}
.book-cover-trigger:hover .book-cover-zoom,
.book-cover-trigger:focus-visible .book-cover-zoom {
  opacity: 1;
}
.book-cover-trigger:hover .book-cover-zoom svg,
.book-cover-trigger:focus-visible .book-cover-zoom svg {
  transform: translateY(0);
}
.book-cover-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.5rem;
  text-align: center;
  color: rgba(255,255,255,0.92);
  line-height: 1.25;
}

/* Variante com capa real (foto) no lugar do texto placeholder */
.book-cover-photo { padding: 0; }
.book-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.book-info { padding: 24px; }

.book-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
}

.book-desc {
  margin-top: 10px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.book-link {
  display: block;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  margin-top: 20px;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), background 0.3s var(--ease), transform 0.3s var(--ease);
}
.book-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
  background: color-mix(in srgb, var(--color-accent) 8%, transparent);
}

.book-link-primary {
  background: var(--color-dark);
  color: var(--color-bg);
  border-color: transparent;
}
.book-link-primary:hover {
  background: var(--color-accent-dark);
  color: var(--color-bg);
  transform: translateY(-2px);
}

/* ---------- Contato ---------- */
.contact-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) {
  .contact-grid { grid-template-columns: repeat(3, 1fr); }
}

.contact-grid-single {
  max-width: 320px;
  margin: 0 auto;
}
@media (min-width: 700px) {
  .contact-grid-single { grid-template-columns: 1fr; }
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  padding: 32px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}
.contact-card:hover { transform: translateY(-4px); border-color: var(--color-accent); }

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--color-accent) 14%, transparent);
  color: var(--color-accent-dark);
  margin-bottom: 6px;
}
.contact-icon svg { width: 20px; height: 20px; }

.contact-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  font-weight: 600;
}
.contact-value { font-size: 1rem; font-weight: 600; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-dark);
  color: color-mix(in srgb, var(--color-bg) 70%, transparent);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.85rem;
}

.back-to-top {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.back-to-top:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.back-to-top svg { width: 16px; height: 16px; }

/* ---------- Popup de livro (capa + prefácio) ---------- */
.book-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.book-modal[hidden] { display: none; }

.book-modal-backdrop {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--color-dark) 70%, transparent);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}

.book-modal-dialog {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 860px;
  max-height: min(720px, 90vh);
  overflow-y: auto;
  display: grid;
  grid-template-columns: 1fr;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: 0 40px 80px -30px color-mix(in srgb, var(--color-dark) 60%, transparent);
  opacity: 0;
  transform: translateY(16px) scale(0.98);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

@media (min-width: 700px) {
  .book-modal-dialog {
    grid-template-columns: 280px 1fr;
    height: min(600px, 85vh);
    max-height: min(600px, 85vh);
    overflow: hidden;
  }
}

.book-modal.is-open .book-modal-backdrop { opacity: 1; }
.book-modal.is-open .book-modal-dialog { opacity: 1; transform: translateY(0) scale(1); }

.book-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-dark) 55%, transparent);
  color: #fff;
  cursor: pointer;
  transition: background 0.3s var(--ease);
}
.book-modal-close:hover { background: var(--color-accent-dark); }
.book-modal-close svg { width: 16px; height: 16px; }

.book-modal-cover {
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}
.book-modal-cover img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.book-modal-content {
  padding: 32px;
  overflow-y: auto;
}

.book-modal-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  padding-right: 32px;
}

.book-modal-eyebrow {
  margin-top: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.book-modal-preface {
  margin-top: 10px;
  color: var(--color-text-muted);
  font-size: 0.96rem;
  line-height: 1.7;
}
.book-modal-preface p + p { margin-top: 12px; }

body.book-modal-open { overflow: hidden; }