/* ════════════════════════════════════════════════════════
   TESSERA · newsletter.css
   La página de la newsletter (newsletter.html): la cabecera, la lista de
   números y un número entero. Reutiliza los tokens de styles.css.
   El cuerpo de cada número lo pinta js/newsletter-bloques.js (clases nl-*).
   ════════════════════════════════════════════════════════ */

/* ══════════════════ CABECERA ══════════════════ */
#nl-hero {
  padding: 11rem 0 5rem;
  background: linear-gradient(135deg, #587579 0%, #202031 75%);
  color: var(--beige);
}
#nl-hero .hero-eyebrow { margin-bottom: 1.4rem; }
.nl-hero-titulo {
  font-size: clamp(2.6rem, 6vw, 4.8rem);
  font-weight: 200;
  line-height: 1.05;
  color: #fff;
}
.nl-hero-titulo strong { font-weight: 800; }
/* el nombre de Tessera, siempre con la letra del logo */
.nl-marca { font-family: var(--ff-logo); font-weight: 400; letter-spacing: .06em; }
.nl-hero-sub {
  margin-top: 1.4rem;
  max-width: 52ch;
  font-size: 1.05rem;
  line-height: 1.7;
  font-weight: 300;
  color: var(--beige);
}
/* leyendo un número, la cabecera se recoge: el protagonista es el artículo */
.nl-leyendo #nl-hero { padding: 8rem 0 2.4rem; }
.nl-leyendo .nl-hero-titulo { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.nl-leyendo .nl-hero-sub { display: none; }

/* ══════════════════ LISTA ══════════════════ */
#nl-lista {
  padding: 5rem 0 7rem;
  background: var(--bg);
  min-height: 40vh;
}
.nl-cargando p, .nl-vacio {
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--mid);
}
.nl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}
.nl-tarjeta {
  display: flex;
  flex-direction: column;
  background: var(--bg-lt);
  border-radius: 6px;
  overflow: hidden;
  color: var(--navy);
  text-decoration: none;
  box-shadow: 0 1px 2px rgba(32, 32, 49, .05), 0 18px 40px -28px rgba(32, 32, 49, .45);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}
.nl-tarjeta:hover { transform: translateY(-4px); box-shadow: 0 2px 4px rgba(32, 32, 49, .06), 0 26px 50px -28px rgba(32, 32, 49, .55); }
.nl-tarjeta:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }
.nl-tarjeta-foto {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #587579 0%, #202031 75%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.nl-tarjeta-foto img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .8s var(--ease); }
.nl-tarjeta:hover .nl-tarjeta-foto img { transform: scale(1.04); }
.nl-tarjeta-logo { font-family: var(--ff-logo); letter-spacing: .3em; color: rgba(255, 255, 255, .7); font-size: 1.2rem; }
.nl-tarjeta-texto { padding: 1.6rem 1.6rem 1.8rem; display: flex; flex-direction: column; gap: .6rem; flex: 1; }
.nl-tarjeta h2 { font-size: 1.35rem; font-weight: 600; line-height: 1.25; }
.nl-tarjeta-resumen { font-size: .95rem; line-height: 1.65; color: var(--mid); font-weight: 300; }
.nl-leer {
  margin-top: auto;
  padding-top: .6rem;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--teal);
}
.nl-fecha {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--teal);
}

/* ══════════════════ UN NÚMERO ══════════════════ */
.nl-articulo { max-width: 760px; margin: 0 auto; color: var(--navy); }
.nl-portada { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; border-radius: 6px; margin-bottom: 2.6rem; }
.nl-cab { margin-bottom: 2.4rem; }
.nl-titulo { margin-top: .9rem; font-size: clamp(2rem, 4.2vw, 3.2rem); font-weight: 200; line-height: 1.12; }
.nl-resumen { margin-top: 1.2rem; font-size: 1.2rem; line-height: 1.65; font-weight: 300; color: var(--mid); }
.nl-cuerpo { font-size: 1.08rem; line-height: 1.85; font-weight: 400; color: #34344a; }
.nl-texto p { margin: 0 0 1.3rem; }
.nl-texto strong { font-weight: 700; color: var(--navy); }
.nl-cuerpo a { color: var(--teal); text-underline-offset: 3px; }
.nl-subtitulo { margin: 2.8rem 0 1rem; font-size: clamp(1.4rem, 2.4vw, 1.8rem); font-weight: 600; line-height: 1.25; color: var(--navy); }
.nl-figura { margin: 2.4rem 0; }
.nl-figura img, .nl-video { width: 100%; display: block; border-radius: 6px; }
.nl-figura figcaption { margin-top: .8rem; font-size: .85rem; color: var(--mid); font-weight: 300; }
.nl-embed { position: relative; aspect-ratio: 16 / 9; border-radius: 6px; overflow: hidden; background: #16161f; }
.nl-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.nl-cita {
  margin: 2.6rem 0;
  padding: .4rem 0 .4rem 1.6rem;
  border-left: 3px solid var(--teal);
}
.nl-cita p { font-size: clamp(1.25rem, 2.2vw, 1.55rem); font-weight: 300; font-style: italic; line-height: 1.5; color: var(--navy); }
.nl-cita cite { display: block; margin-top: .8rem; font-style: normal; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: var(--teal); }
.nl-boton { margin: 2.2rem 0; }
.nl-boton a {
  display: inline-flex;
  align-items: center;
  padding: 1rem 2rem;
  border-radius: 999px;
  background: var(--navy);
  color: #fff;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background .3s var(--ease);
}
.nl-boton a:hover { background: var(--teal); }

.nl-volver {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  margin: 0 0 2.4rem;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--teal);
  text-decoration: none;
}
.nl-volver:last-child { margin: 3rem 0 0; }
.nl-articulo + .nl-compartir, .nl-compartir { max-width: 760px; margin: 3.4rem auto 0; padding-top: 1.6rem; border-top: 1px solid var(--dust);
  display: flex; align-items: center; gap: 1rem; }
.nl-compartir span { font-size: .72rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--mid); margin-right: .4rem; }
.nl-compartir a, .nl-compartir button {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--dust); background: var(--bg-lt);
  display: inline-flex; align-items: center; justify-content: center; color: var(--navy); cursor: pointer;
  transition: border-color .3s var(--ease), color .3s var(--ease);
}
.nl-compartir a:hover, .nl-compartir button:hover { border-color: var(--teal); color: var(--teal); }
.nl-compartir button.copiado { border-color: var(--teal); color: var(--teal); }
#nlContenido > .nl-volver:first-child { display: flex; max-width: 760px; margin-left: auto; margin-right: auto; }
#nlContenido > .nl-volver:last-child { display: flex; max-width: 760px; margin-left: auto; margin-right: auto; }

@media (max-width: 768px) {
  #nl-hero { padding: 8rem 0 3.4rem; }
  .nl-leyendo #nl-hero { padding: 6.4rem 0 1.6rem; }
  #nl-lista { padding: 3rem 0 5rem; }
  .nl-grid { grid-template-columns: 1fr; gap: 1.4rem; }
  .nl-cuerpo { font-size: 1.02rem; }
}