/* =========================================================
   Alfredo Barrera Martín — Web de autor
   Estilo: Gráfico y atrevido (rojo / negro / crema)
   ========================================================= */

:root {
  --cream: #f2ead9;
  --black: #141110;
  --black-alt: #1a1512;
  --card: #1f1a17;
  --card-line: #332a24;
  --red: #c8331f;
  --red-dark: #8f2115;
  --red-soft: #e2543c;
  --ink-soft: #c9beac;
  --ink-faint: #8f8368;
  --line: #2a2420;
  --shadow-red: 10px 10px 0 var(--red);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--black);
  color: var(--cream);
  font-family: 'Work Sans', -apple-system, 'Segoe UI', sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 {
  font-family: 'Anton', sans-serif;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: .01em;
  margin: 0 0 .4em;
  text-wrap: balance;
}

p { margin: 0 0 1em; }
a { color: inherit; text-decoration: none; }

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--red);
  margin: 0 0 14px;
  font-weight: 500;
}

.section-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 28px;
}

.section { padding: 100px 0; }
.section-libros { background: var(--black); }
.section-autor { background: var(--black-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-perfumes { background: var(--black); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 15px 32px;
  font-family: 'Work Sans', sans-serif;
  font-weight: 700;
  font-size: 14.5px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  border: 3px solid var(--red);
  transition: transform 0.15s ease, background 0.2s ease, color 0.2s ease;
}
.btn-primary { background: var(--red); color: var(--cream); }
.btn-primary:hover { background: var(--red-soft); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--red); }
.btn-outline:hover { background: var(--red); color: var(--cream); transform: translateY(-2px); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(20, 17, 16, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--red);
}
.nav-wrap {
  max-width: 1160px;
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-family: 'Work Sans', sans-serif;
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--cream);
}
.main-nav { display: flex; gap: 34px; }
.main-nav a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--ink-soft);
  transition: color 0.15s ease;
}
.main-nav a:hover { color: var(--red); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
  cursor: pointer;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--cream); display: block; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 28px 90px;
  position: relative;
  overflow: hidden;
  background:
    repeating-linear-gradient(135deg, rgba(200,51,31,0.05) 0 2px, transparent 2px 40px),
    var(--black);
}
.hero::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0; height: 10px;
  background: repeating-linear-gradient(90deg, var(--red) 0 40px, var(--black) 40px 80px);
}
.hero-inner { max-width: 900px; position: relative; }
.hero h1 {
  font-size: clamp(34px, 6.6vw, 76px);
  line-height: 1.02;
  margin-bottom: 28px;
  color: var(--cream);
}
.hero h1 span { color: var(--red); }
.hero-sub {
  color: var(--ink-soft);
  font-size: 17px;
  max-width: 58ch;
  margin: 0 auto 38px;
}

/* ---------- Libros ---------- */
.books-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 90px;
  margin-top: 54px;
}

.book-card {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 50px;
  align-items: start;
}

.book-card:nth-of-type(2) { direction: rtl; }
.book-card:nth-of-type(2) > * { direction: ltr; }

.book-cover {
  aspect-ratio: 2 / 3;
  overflow: hidden;
  position: relative;
  transform: rotate(-2deg);
  box-shadow: var(--shadow-red);
}
.book-card:nth-of-type(2) .book-cover {
  transform: rotate(2deg);
  box-shadow: -10px 10px 0 var(--red);
}
.book-cover img { width: 100%; height: 100%; object-fit: cover; }

.book-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 8px;
}
.book-info h3 { font-size: clamp(30px, 3.6vw, 44px); }
.book-hook {
  color: var(--red);
  font-weight: 600;
  font-size: 16.5px;
  margin-bottom: 20px;
  font-family: 'Work Sans', sans-serif;
}
.book-synopsis { color: var(--ink-soft); font-size: 15.5px; }
.book-synopsis-tag { color: var(--cream); }

.reviews {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin: 26px 0 30px;
}
.review { background: var(--red-dark); border: 2px solid var(--red); padding: 16px 18px; }
.review .stars { color: var(--cream); font-size: 13px; letter-spacing: 2px; margin-bottom: 8px; }
.review p { font-size: 13.5px; color: var(--cream); margin: 0 0 10px; }
.review cite { font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--cream); opacity: .8; }

/* ---------- Autor ---------- */
.autor-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 64px;
  align-items: center;
}
.autor-photo {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  transform: rotate(-1.5deg);
  box-shadow: var(--shadow-red);
}
.autor-photo img { width: 100%; height: 100%; object-fit: cover; }

.autor-text p { color: var(--ink-soft); font-size: 16px; }
.autor-firma { color: var(--cream); font-size: 17px; margin-top: 22px; font-weight: 600; }
.autor-firma em {
  color: var(--red);
  font-style: normal;
  font-family: 'Anton', sans-serif;
  text-transform: uppercase;
  letter-spacing: .01em;
}

/* ---------- Perfumes ---------- */
.perfumes-inner { text-align: center; max-width: 700px; }
.perfumes-text { color: var(--ink-soft); font-size: 16px; }
.perfumes-stats { display: flex; justify-content: center; gap: 50px; margin: 36px 0 42px; }
.pstat { text-align: center; }
.pstat .n { display: block; font-family: 'Anton', sans-serif; font-size: 44px; color: var(--red); }
.pstat .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ---------- Footer ---------- */
.site-footer { background: var(--black-alt); border-top: 2px solid var(--red); padding: 48px 0; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; }
.brand-footer {
  font-family: 'Work Sans', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  font-size: 15px;
  margin: 0;
}
.footer-nav { display: flex; gap: 26px; }
.footer-nav a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.footer-nav a:hover { color: var(--red); }
.footer-copy { width: 100%; font-size: 12.5px; color: var(--ink-faint); margin: 8px 0 0; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* =========================================================
   Responsive — tablet
   ========================================================= */
@media (max-width: 900px) {
  .autor-grid { grid-template-columns: 1fr; text-align: center; }
  .autor-photo { max-width: 420px; margin: 0 auto; transform: none; box-shadow: 8px 8px 0 var(--red); }
}

@media (max-width: 860px) {
  .book-card { grid-template-columns: 1fr; }
  .book-card:nth-of-type(2) { direction: ltr; }
  .book-cover { max-width: 270px; margin: 0 auto; transform: none !important; box-shadow: 8px 8px 0 var(--red) !important; }
  .book-info { text-align: left; }
}

/* =========================================================
   Responsive — mobile
   ========================================================= */
@media (max-width: 700px) {
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    background: var(--black);
    border-bottom: 2px solid var(--red);
    flex-direction: column;
    padding: 20px 28px 28px;
    gap: 20px;
    transform: translateY(-130%);
    transition: transform 0.25s ease;
  }
  .main-nav.is-open { transform: translateY(0); }
  .nav-toggle { display: flex; }

  .section { padding: 72px 0; }
  .hero { padding: 120px 22px 70px; min-height: 92vh; }
  .hero h1 { font-size: clamp(30px, 9vw, 44px); }
  .hero-sub { font-size: 15.5px; }

  .book-hook { font-size: 15.5px; }
  .reviews { grid-template-columns: 1fr; }

  .perfumes-stats { gap: 26px; }
  .pstat .n { font-size: 34px; }

  .footer-inner { flex-direction: column; align-items: flex-start; text-align: left; }
}

@media (max-width: 420px) {
  .section-inner { padding: 0 20px; }
  .btn { width: 100%; text-align: center; padding: 15px 20px; }
}