@font-face{font-family:'Pulso';src:url('../fonts/PulsoLight.otf') format('opentype');font-weight:300;font-style:normal;font-display:swap;}
@font-face{font-family:'Pulso';src:url('../fonts/PulsoRegular.otf') format('opentype');font-weight:400;font-style:normal;font-display:swap;}
@font-face{font-family:'Pulso';src:url('../fonts/PulsoBold.otf') format('opentype');font-weight:700;font-style:normal;font-display:swap;}

/* ════════════════════════════════════════════════════════════
   NAV GLOBAL · PeriodismoIA 2026
   Botonera unificada para todo el sitio (extraída de index.css)
   ════════════════════════════════════════════════════════════ */

.site-nav { position: fixed; top: 3px; left: 0; right: 0; z-index: 1000; background: rgba(13,27,62,.82); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,.08); }
.nav-inner { max-width: 1180px; margin: 0 auto; padding: .95rem 4rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.nav-brand { display: inline-flex; align-items: center; gap: 0; font-family: 'Pulso',sans-serif; font-weight: 300; font-size: 1.15rem; color: #fff; text-decoration: none; letter-spacing: -.02em; }
.nav-brand span {vertical-align:baseline;position:relative;top:1px; color: #fff; font-weight:300; margin-left:.12em; }
.nav-brand .ver { font-size: .6rem; font-weight: 600; letter-spacing: .12em; color: #00B4D8; border: 1px solid rgba(0,180,216,.4); border-radius: 99px; padding: .12rem .5rem; margin-left: .6rem; }
.nav-right { display: flex; align-items: center; gap: 2rem; }
.nav-links { display: flex; gap: 1.3rem; list-style: none; margin: 0; padding: 0; }
.nav-links > li { list-style: none; }
.nav-links a { font-family: 'Pulso',sans-serif; font-size: .76rem; font-weight: 500; letter-spacing: .04em; color: rgba(255,255,255,.62); text-decoration: none; transition: color .18s; white-space: nowrap; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: #00B4D8; }

/* ─── Dropdown de Capítulos ─── */
.nav-dropdown { position: relative; }
.nav-dropdown-toggle { display: inline-flex; align-items: center; gap: .35rem; cursor: pointer; }
.nav-chevron { transition: transform .25s ease; opacity: .7; }
.nav-dropdown:hover .nav-chevron, .nav-dropdown:focus-within .nav-chevron { transform: rotate(180deg); opacity: 1; }
/* Puente invisible para que el hover no se pierda en el gap */
.nav-dropdown::before { content: ''; position: absolute; top: 100%; left: -1rem; right: -1rem; height: .9rem; }
.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + .85rem);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 300px;
  list-style: none;
  background: rgba(13,27,62,.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 12px;
  padding: .5rem;
  margin: 0;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
  box-shadow: 0 18px 44px -18px rgba(0,0,0,.65);
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-menu li { list-style: none; }
.nav-dropdown-menu a {
  display: flex !important;
  align-items: center;
  gap: .75rem;
  padding: .55rem .8rem;
  border-radius: 8px;
  font-family: 'Pulso',sans-serif;
  font-size: .78rem;
  font-weight: 500;
  color: rgba(255,255,255,.78) !important;
  text-decoration: none;
  transition: background .18s, color .18s;
  white-space: nowrap;
}
.nav-dropdown-menu a:hover,
.nav-dropdown-menu a[aria-current="page"] { background: rgba(255,255,255,.06); color: #00B4D8 !important; }
.nav-cap-num {
  font-family: 'Pulso',sans-serif;
  font-size: 1rem;
  color: #00B4D8;
  min-width: 1.8rem;
  line-height: 1;
}
.nav-cap-title { line-height: 1.25; }

/* CTA "Descargar guía" */
.nav-cta { font-family: 'Pulso',sans-serif; font-size: .7rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: #0D1B3E; background: #00B4D8; text-decoration: none; padding: .62rem 1.1rem; border-radius: 99px; transition: transform .18s, box-shadow .18s; white-space: nowrap; }
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 22px -10px rgba(0,180,216,.8); }

/* Burger para móvil */
.nav-burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 4px; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.nav-burger span { width: 26px; height: 2px; background: #fff; display: block; border-radius: 2px; }

@media (max-width: 900px) {
  .nav-inner { padding: .9rem 1.5rem; position: relative; }
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: flex; }

  /* Menú móvil abierto */
  .site-nav.is-open .nav-links {
    display: flex !important;
    position: absolute;
    flex-direction: column;
    top: 100%;
    left: 1rem;
    right: 1rem;
    background: rgba(13,27,62,.97);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: .9rem 1.3rem 1.2rem;
    border-radius: 0 0 14px 14px;
    border: 1px solid rgba(255,255,255,.1);
    border-top: 0;
    gap: 0.55rem;
    z-index: 200;
    box-shadow: 0 18px 44px -16px rgba(0,0,0,.5);
    max-height: calc(100vh - 72px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }
  /* CTA "Descargar guía" inyectado dentro del menú abierto (vía JS) */
  .site-nav.is-open .nav-links .nav-cta {
    display: inline-flex !important;
    width: 100%;
    justify-content: center;
    margin-top: .35rem;
    position: static;
  }
  /* Estado activo (página actual) en mobile */
  .site-nav.is-open .nav-links a[aria-current="page"] {
    color: var(--cyan);
    position: relative;
    padding-left: .8rem;
  }
  .site-nav.is-open .nav-links a[aria-current="page"]::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 16px;
    background: var(--cyan);
    border-radius: 2px;
  }

  /* Burger animado a "X" cuando está abierto */
  .nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav-burger span { transition: transform .25s ease, opacity .2s ease; }

  /* Dropdown de Capítulos en mobile: expansión inline, no hover */
  .nav-dropdown::before { display: none; }
  .nav-dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    background: transparent;
    border: 0;
    box-shadow: none;
    padding: 0;
    margin: 0;
    max-height: 0;
    min-width: 0;
    width: 100%;
    overflow: hidden;
    transition: max-height .35s ease;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .nav-dropdown.is-open .nav-dropdown-menu {
    max-height: 600px;
    margin-top: .35rem;
    padding: .2rem 0 .15rem .7rem;
    border-left: 1px solid rgba(0,180,216,.25);
  }
  /* Items del dropdown en mobile */
  .nav-dropdown-menu a {
    white-space: normal !important;
    padding: .32rem .45rem !important;
    font-size: .8rem;
  }
  .nav-cap-num { min-width: 1.6rem; font-size: .9rem; }
  .nav-cap-title { line-height: 1.25; flex: 1; min-width: 0; }
  .nav-chevron { transition: transform .25s ease; }
  .nav-dropdown.is-open .nav-chevron { transform: rotate(180deg); }
  /* Anular el hover de desktop en mobile (que se queda pegado en touch) */
  /* CRÍTICO: también resetear transform para neutralizar translateX(-50%) del desktop */
  .nav-dropdown:hover .nav-dropdown-menu,
  .nav-dropdown:focus-within .nav-dropdown-menu {
    max-height: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
  }
  .nav-dropdown.is-open:hover .nav-dropdown-menu,
  .nav-dropdown.is-open:focus-within .nav-dropdown-menu {
    max-height: 600px;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}


/* ─── Toggle de idioma ES | EN ─── */
.nav-lang { display: flex; align-items: center; gap: 5px; font-family: 'Pulso', sans-serif; font-size: .68rem; font-weight: 700; letter-spacing: .09em; }
.nav-lang-sep { color: rgba(255,255,255,.22); }
.nav-lang a { color: rgba(255,255,255,.38); text-decoration: none; transition: color .18s; }
.nav-lang a:hover { color: rgba(255,255,255,.75); }
.nav-lang a.is-active { color: #00B4D8; border-bottom: 1.5px solid #00B4D8; padding-bottom: 1px; }
@media (max-width: 900px) { .nav-lang { font-size: .72rem; } }