:root {
  --navy: #14213d;
  --navy-light: #1f3a6e;
  --gold: #c9a24b;
  --gold-dark: #a9842f;
  --cream: #faf6ef;
  --cream-dark: #f1e9db;
  --ink: #22201c;
  --muted: #6b675f;
  --white: #ffffff;
  --green: #2e7d5b;
  --red: #b3452f;
  --shadow: 0 10px 30px rgba(20, 33, 61, .12);
  --shadow-lg: 0 20px 50px rgba(20, 33, 61, .18);
  --radius: 14px;
  --font-head: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
}

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

.container { width: 100%; max-width: 1150px; margin: 0 auto; padding: 0 22px; }

h1, h2, h3 { font-family: var(--font-head); line-height: 1.2; color: var(--navy); }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 900; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); font-weight: 700; }
h3 { font-size: 1.2rem; }

.btn {
  display: inline-block;
  padding: 14px 30px;
  border: 0;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: .98rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--gold);
  color: #fff;
  box-shadow: 0 8px 20px rgba(201, 162, 75, .4);
}
.btn-primary:hover { background: var(--gold-dark); transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
}
.btn-ghost:hover { background: var(--navy); color: #fff; }
.btn-lg { padding: 16px 40px; font-size: 1.05rem; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  background: rgba(250, 246, 239, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(20, 33, 61, .08);
  transition: box-shadow .2s ease;
}
.site-header.scrolled { box-shadow: var(--shadow); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
}
.brand img { height: 62px; width: auto; }
.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a {
  color: var(--navy);
  text-decoration: none;
  font-weight: 600;
  font-size: .95rem;
}
.main-nav a:hover { color: var(--gold-dark); }
.nav-cta {
  background: var(--navy);
  color: #fff !important;
  padding: 10px 22px;
  border-radius: 999px;
}
.nav-cta:hover { background: var(--gold-dark); color: #fff !important; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  width: 26px; height: 3px;
  background: var(--navy);
  border-radius: 3px;
  transition: transform .2s ease, opacity .2s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding: 150px 0 90px; background: linear-gradient(180deg, #fff 0%, var(--cream) 100%); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 50px;
  align-items: center;
}
.hero-badge {
  display: inline-block;
  background: var(--green);
  color: #fff;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero-lead { font-size: 1.12rem; color: var(--muted); margin: 22px 0; }
.hero-tagline {
  font-family: var(--font-head);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--gold-dark);
  margin-bottom: 30px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-trust { display: flex; gap: 22px; flex-wrap: wrap; color: var(--muted); font-size: .92rem; }
.hero-trust span { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust svg { color: var(--green); flex-shrink: 0; }

.hero-books {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 0;
  padding-top: 30px;
}
.hero-books img {
  box-shadow: var(--shadow-lg);
  border-radius: 6px;
}
.hero-books picture:nth-child(1) img { width: 42%; transform: rotate(-6deg) translateY(6px); }
.hero-books picture:nth-child(2) img { width: 36%; transform: translateY(-10px); z-index: 2; }
.hero-books picture:nth-child(3) img { width: 42%; transform: rotate(6deg) translateY(6px); }

/* ---------- Value ---------- */
.value { background: var(--white); border-top: 1px solid rgba(20,33,61,.06); }
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding: 60px 22px;
}
.value-item { text-align: center; }
.value-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--cream-dark);
  color: var(--gold-dark);
  margin-bottom: 16px;
}
.value-item h3 { margin-bottom: 8px; }
.value-item p { color: var(--muted); font-size: .96rem; }

/* ---------- Sections head ---------- */
.section-head { text-align: center; max-width: 720px; margin: 0 auto 46px; }
.section-kicker {
  display: block;
  color: var(--gold-dark);
  font-weight: 700;
  font-size: .82rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-head p { color: var(--muted); margin-top: 12px; }

/* ---------- Trilogía ---------- */
.trilogy { padding: 90px 0; }
.books-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.book-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px 26px 30px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform .2s ease, box-shadow .2s ease;
}
.book-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.book-cover {
  margin-bottom: 18px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 22px rgba(20,33,61,.18);
}
.book-card h3 { margin-bottom: 8px; }
.book-card > p { color: var(--muted); font-size: .95rem; margin-bottom: 16px; flex-grow: 1; }
.book-price { margin-bottom: 18px; display: flex; align-items: baseline; gap: 10px; justify-content: center; }
.old-price { color: var(--muted); text-decoration: line-through; font-size: 1rem; }
.price { color: var(--gold-dark); font-weight: 800; font-size: 1.5rem; font-family: var(--font-head); }
.price.big { font-size: 2.4rem; }

/* ---------- Pack ---------- */
.pack { padding-bottom: 90px; }
.pack-box {
  background: var(--navy);
  color: #fff;
  border-radius: 22px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 50px 50px;
  box-shadow: var(--shadow-lg);
}
.pack-box .section-kicker { color: var(--gold); }
.pack-box h2 { color: #fff; }
.pack-copy p { color: rgba(255,255,255,.8); margin: 14px 0 18px; }
.pack-visual img { border-radius: 12px; box-shadow: 0 14px 40px rgba(0,0,0,.35); }
.pack-list { list-style: none; margin-bottom: 22px; }
.pack-list li { display: flex; align-items: center; gap: 10px; padding: 6px 0; color: rgba(255,255,255,.9); }
.pack-list svg { color: var(--gold); flex-shrink: 0; }
.pack-price { display: flex; align-items: baseline; gap: 14px; margin-bottom: 22px; }
.pack-price .old-price { color: rgba(255,255,255,.55); }
.pack-price .price { color: var(--gold); }
.save {
  background: var(--green);
  color: #fff;
  font-size: .8rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
}

/* ---------- Autor ---------- */
.autor { padding: 0 0 90px; }
.autor-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 50px;
  align-items: center;
}
.autor-visual img { border-radius: var(--radius); box-shadow: var(--shadow); }
.autor-copy p { color: var(--muted); margin-bottom: 14px; }
.autor-copy h2 { margin-bottom: 16px; }
.autor-quote {
  font-family: var(--font-head);
  font-style: italic;
  color: var(--gold-dark);
  font-size: 1.15rem;
  border-left: 4px solid var(--gold);
  padding-left: 18px;
}

/* ---------- Testimonios ---------- */
.testimonios { padding: 0 0 90px; }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.gallery-grid figure {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  cursor: zoom-in;
  box-shadow: var(--shadow);
  aspect-ratio: 3/5;
  background: var(--cream-dark);
}
.gallery-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.gallery-grid figure:hover img { transform: scale(1.05); }

/* ---------- Pedido ---------- */
.pedido { padding-bottom: 90px; }
.pedido-box {
  background: var(--white);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 50px;
  max-width: 820px;
  margin: 0 auto;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-weight: 600; font-size: .9rem; color: var(--navy); }
.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 12px 14px;
  border: 1.5px solid var(--cream-dark);
  border-radius: 10px;
  background: var(--cream);
  color: var(--ink);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201,162,75,.18);
  background: #fff;
}
.form-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--cream);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 22px 0 8px;
  font-weight: 600;
}
.form-total strong { font-family: var(--font-head); font-size: 1.5rem; color: var(--gold-dark); }
.form-consent { margin: 14px 0 20px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: .9rem; color: var(--muted); cursor: pointer; }
.check input { margin-top: 4px; accent-color: var(--gold); }
.check a { color: var(--navy); font-weight: 600; }
.form-note { text-align: center; color: var(--muted); font-size: .85rem; margin-top: 14px; }
.form-error {
  margin-top: 18px;
  background: #fdecea;
  color: var(--red);
  border: 1px solid #f3c1b6;
  border-radius: 10px;
  padding: 14px 18px;
  font-weight: 600;
}
.form-error a { color: var(--red); }

/* ---------- Footer ---------- */
.footer { background: var(--navy); color: rgba(255,255,255,.75); padding: 60px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand img { width: 80px; height: auto; margin-bottom: 12px; }
.footer-brand p { font-size: .9rem; }
.footer-col h4 {
  color: #fff;
  font-family: var(--font-body);
  font-size: .85rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.footer-col a { display: block; color: rgba(255,255,255,.75); text-decoration: none; font-size: .92rem; padding: 4px 0; }
.footer-col a:hover { color: var(--gold); }
.footer-col p { font-size: .92rem; padding: 4px 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 20px 22px;
  font-size: .82rem;
  color: rgba(255,255,255,.5);
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid, .pack-box, .autor-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 130px; }
  .hero-visual { order: -1; }
  .hero-books picture:nth-child(2) { display: none; }
  .books-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .value-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 700px) {
  .menu-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 88px;
    left: 0; right: 0;
    background: var(--cream);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 10px 22px 20px;
    box-shadow: var(--shadow);
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 0; width: 100%; border-bottom: 1px solid rgba(20,33,61,.07); }
  .main-nav .nav-cta { text-align: center; border: 0; }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.full { grid-column: auto; }
  .pedido-box { padding: 30px 22px; }
  .pack-box { padding: 34px 24px; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
}