@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Playfair+Display:wght@400;700;900&display=swap');

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

:root {
  --black:    #0a0a0a;
  --dark:     #111114;
  --surface:  #17171b;
  --border:   #2a2a2f;
  --mid:      #5a5a65;
  --light:    #b0b0b8;
  --white:    #f0f0f2;
  --accent:   #e8e0d0;
  --blue:     #2d5fa8;
  --blue-dim: rgba(45,95,168,.12);
  --gap-sm:  1.5rem;
  --gap-md:  3rem;
  --gap-lg:  6rem;
  --max:     1160px;
}

html { font-size: 16px; }
body {
  background: var(--black);
  color: var(--white);
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── UTILIDADES ─── */
.container { max-width: var(--max); margin: 0 auto; padding: 0 2rem; }

.eyebrow {
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mid);
  display: block;
  margin-bottom: .75rem;
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--white);
}

.divider {
  width: 2rem; height: 1px;
  background: var(--border);
  margin: var(--gap-md) 0;
}

/* ─── BOTONES ─── */
.btn {
  display: inline-block;
  padding: .75rem 1.75rem;
  font-size: .8rem;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--white);
  transition: border-color .2s, color .2s;
  cursor: pointer;
}
.btn:hover { border-color: var(--white); }

.btn-solid {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}
.btn-solid:hover { background: var(--accent); border-color: var(--accent); }

.btn-accent {
  background: var(--accent);
  color: var(--black);
  border-color: var(--accent);
}
.btn-accent:hover { background: var(--white); border-color: var(--white); }

.btn-blue {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.btn-blue:hover { background: #2451a0; border-color: #2451a0; }

/* ─── NAV ─── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.1rem 3rem;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(10,10,10,.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  letter-spacing: .08em;
  color: var(--white);
  text-decoration: none;
}
.nav-logo img {
  height: 46px;
  width: auto;
  display: block;
  filter: invert(1);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  align-items: center;
}
.nav-links a {
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--light);
  text-decoration: none;
  transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }

/* ─── NAV CTA (Tally popup button) ─── */
.nav-cta {
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--black);
  background: var(--white);
  border: 1px solid var(--white);
  padding: .5rem 1.25rem;
  transition: background .2s, border-color .2s;
  white-space: nowrap;
  cursor: pointer;
}
.nav-cta:hover { background: var(--accent); border-color: var(--accent); }

/* ─── DROPDOWN ─── */
.nav-dropdown { position: relative; }
.nav-dropdown > a {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: .4rem;
}
.nav-dropdown > a::after {
  content: "\2193";
  font-size: .55rem;
  opacity: .5;
}

/* Bridge invisible para poder llegar al menú sin que desaparezca */
.nav-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: .75rem;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + .75rem);
  left: 0;
  background: var(--dark);
  border: 1px solid var(--border);
  min-width: 280px;
  flex-direction: column;
  z-index: 200;
}
.nav-dropdown:hover .dropdown-menu { display: flex; }

.dropdown-menu a {
  padding: .9rem 1.25rem;
  font-size: .72rem;
  letter-spacing: .08em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  color: var(--light);
  text-decoration: none;
  transition: background .2s, color .2s;
  text-transform: none;
}
.dropdown-menu a:last-child { border-bottom: none; }
.dropdown-menu a:hover { background: var(--surface); color: var(--white); }

/* ─── FOOTER ─── */
footer {
  padding: 2.5rem 3rem;
  border-top: 1px solid var(--border);
  background: var(--dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .7rem;
  color: var(--mid);
  letter-spacing: .08em;
}
footer a { color: var(--mid); text-decoration: none; transition: color .2s; }
footer a:hover { color: var(--white); }

/* ─── MOCKUP NOTE ─── */
.mockup-note {
  position: fixed; bottom: 1rem; right: 1rem;
  background: var(--blue);
  color: white;
  font-size: .65rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: .5rem 1rem;
  z-index: 200;
  display: none; /* ocultar en producción */
}

/* ════════════════════════════════════════════
   HAMBURGER NAV
   ════════════════════════════════════════════ */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .4rem;
  margin-left: 1rem;
  flex-shrink: 0;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--white);
  transition: transform .25s, opacity .25s;
  transform-origin: center;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ════════════════════════════════════════════
   TABLET — ≤ 1024px
   ════════════════════════════════════════════ */
@media (max-width: 1024px) {
  :root {
    --gap-lg: 4rem;
    --gap-md: 2.5rem;
  }

  /* nav */
  nav { padding: 1rem 2rem; }
  .nav-links { gap: 1.75rem; }

  /* héros con grid 1fr 1fr */
  .hero-left { padding: 4rem 2.5rem 4rem 3rem; }

  /* grids de 4 columnas → 2 */
  .how-steps,
  .forwho-grid,
  .price-stages,
  .format-grid { grid-template-columns: repeat(2, 1fr) !important; }

  .stats-inner { grid-template-columns: repeat(4, 1fr) !important; }

  /* paths home */
  .paths-grid { grid-template-columns: 1fr !important; }

  /* módulos ECE */
  .modules-grid { grid-template-columns: 1fr !important; }

  /* pricing ECE */
  .pricing-grid { grid-template-columns: repeat(3, 1fr) !important; }

  /* equipo sobre-laura */
  .team-grid { grid-template-columns: repeat(3, 1fr) !important; }

  /* libros */
  .books-grid { grid-template-columns: 1fr !important; }

  /* formula desglose R=R */
  .formula-blocks { grid-template-columns: 1fr 60px 1fr !important; }
}

/* ════════════════════════════════════════════
   MOBILE — ≤ 768px
   ════════════════════════════════════════════ */
@media (max-width: 768px) {
  /* ── NAV ── */
  nav { padding: 1rem 1.5rem; }

  .nav-hamburger { display: flex; }
  .nav-cta       { display: none; }

  .nav-links {
    display: none;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: rgba(10,10,10,.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 1rem 1.5rem 2rem;
    gap: 0;
    border-bottom: 1px solid var(--border);
    z-index: 99;
    list-style: none;
    max-height: calc(100vh - 68px);
    overflow-y: auto;
  }
  .nav-links.open { display: flex; }
  .nav-links > li { border-bottom: 1px solid var(--border); }
  .nav-links > li:last-child { border-bottom: none; }
  .nav-links a {
    padding: .9rem 0;
    display: block;
    font-size: .8rem;
  }

  /* Dropdown en mobile: siempre expandido inline */
  .nav-dropdown::after { display: none; }
  .nav-dropdown > a::after { display: none; }
  .nav-dropdown .dropdown-menu {
    display: flex !important;
    position: static !important;
    background: transparent;
    border: none;
    min-width: unset;
    flex-direction: column;
    padding-left: 1rem;
    gap: 0;
    top: unset;
  }
  .nav-dropdown .dropdown-menu a {
    font-size: .72rem;
    color: var(--mid);
    padding: .5rem 0;
    border-bottom: none;
    white-space: normal;
  }
  .nav-dropdown .dropdown-menu a:hover { background: transparent; color: var(--white); }

  /* ── HEROES ── */
  /* Todos los heroes grid → columna única */
  .hero {
    grid-template-columns: 1fr !important;
    min-height: unset;
  }

  /* El contenido del hero izquierdo */
  .hero-left {
    padding: 3.5rem 1.5rem 2.5rem !important;
    order: 1;
  }

  /* La foto del hero va abajo en mobile */
  .hero-photo {
    min-height: 56vw;
    order: 2;
  }
  .hero-photo::before {
    background: linear-gradient(to bottom, var(--dark) 0%, transparent 30%) !important;
  }

  /* Hero serie (foto como bg absoluta) queda bien,
     solo ajustamos el padding del content */
  .hero-content { padding: 0 !important; }

  /* Hero sobre-laura: foto primero */
  .hero-photo.left-photo { order: 0; min-height: 60vw; }

  /* ── FICHA TÉCNICA HERO ── */
  .hero-ficha { grid-template-columns: 1fr 1fr !important; }

  /* ── PADDING GLOBAL DE SECCIONES ── */
  .container { padding: 0 1.25rem; }

  .paths,
  .method, .courses, .orgs, .books, .final-cta,
  .videos, .what, .chapters, .forwho, .author, .buy-cta,
  .not-section, .formula-section, .how-section, .quote-section, .apply-section,
  .problem, .two-paths, .consulting, .facilitators,
  .for-who, .curriculum, .format-section, .pricing, .platform,
  .trayectoria, .rr-origin, .team, .testimonials,
  .programa, .ficha-section, .why-section, .process,
  .cert-section, .stats-bar { padding-left: 1.25rem !important; padding-right: 1.25rem !important; }

  /* ── GRIDS DOBLES → 1 COLUMNA ── */
  .method-inner,
  .orgs-inner,
  .about-inner,
  .for-who-inner,
  .trayectoria-inner,
  .rr-origin-inner,
  .facilitators-inner,
  .platform-inner,
  .consulting-inner,
  .buy-cta-inner,
  .final-cta-inner,
  .problem-inner,
  .what-inner,
  .cert-header,
  .ficha-inner { grid-template-columns: 1fr !important; gap: 2.5rem !important; }

  /* ── GRIDS MÚLTIPLES ── */
  .courses-grid,
  .books-grid,
  .not-grid,
  .testimonials-grid { grid-template-columns: 1fr !important; }

  /* paths home */
  .paths-grid { grid-template-columns: 1fr !important; }

  /* stats bar */
  .stats-inner { grid-template-columns: 1fr 1fr !important; }

  /* grids 4 col → 1 en mobile */
  .how-steps,
  .format-grid,
  .forwho-grid,
  .price-stages,
  .price-stages { grid-template-columns: 1fr 1fr !important; }

  /* pricing ECE */
  .pricing-grid { grid-template-columns: 1fr 1fr !important; }

  /* equipo */
  .team-grid { grid-template-columns: 1fr 1fr !important; }

  /* apply grid R=R */
  .apply-grid { grid-template-columns: 1fr !important; }

  /* why grid certificación */
  .why-grid { grid-template-columns: 1fr !important; }

  /* formula desglose */
  .formula-blocks { grid-template-columns: 1fr !important; gap: 1rem !important; }
  .formula-eq-center { display: none !important; }

  /* book card */
  .book-card { grid-template-columns: 90px 1fr !important; gap: 1.25rem !important; }

  /* libro principal en libros.html */
  .book-main-inner,
  .book-secondary-inner { grid-template-columns: 1fr !important; gap: 2rem !important; }
  .book-cover-large { max-width: 220px; }

  /* cta final */
  .final-cta-inner { grid-template-columns: 1fr !important; }
  .final-cta-options { gap: .75rem; }

  /* ── TIPOGRAFÍA ── */
  .section-title { font-size: clamp(1.6rem, 5vw, 2.2rem) !important; }
  .hero-formula  { font-size: clamp(2.5rem, 12vw, 5rem)  !important; }

  /* ── EXTRAS ── */
  .hero-credential { display: none; }
  .tabs-bar { top: 68px !important; }

  /* Fases certificación */
  .phases { gap: 0; }

  /* Videos grid → 1 col */
  .videos-grid { grid-template-columns: 1fr !important; }

  /* Capítulos → 1 col */
  .chapters-grid { grid-template-columns: 1fr !important; }

  /* Author serie */
  .author-inner { grid-template-columns: 1fr !important; }
  .author-photo { max-width: 200px; }

  /* Hero home específico */
  .hero-name { font-size: clamp(2.2rem, 9vw, 3.2rem) !important; }
  .hero-credentials { display: none; }
  .hero-formula-inline { font-size: clamp(4rem, 16vw, 7rem) !important; }
}

/* ════════════════════════════════════════════
   SMALL MOBILE — ≤ 480px
   ════════════════════════════════════════════ */
@media (max-width: 480px) {
  .how-steps,
  .format-grid,
  .forwho-grid,
  .price-stages,
  .pricing-grid,
  .team-grid,
  .stats-inner { grid-template-columns: 1fr !important; }

  .hero-ficha   { grid-template-columns: 1fr 1fr !important; }

  .book-card { grid-template-columns: 75px 1fr !important; }

  nav { padding: .85rem 1.25rem; }
  .nav-logo img { height: 38px !important; }

  /* Reduce hero padding */
  .hero-left { padding: 3rem 1.25rem 2rem !important; }
}