/* ——— Cartell de l'agenda (10.10.2026) ———
   Banda de portada #cartell: el cartell de l'acte destacat (una hackató, un
   congrés) i, al costat, els propers actes. La pinta public/cartell.js a partir
   de public/data/agenda.json; amagada si no hi ha cap acte proper.
   Full independent per no tocar portada.css (regla de CLAUDE.md).
   Distinció visual: és l'única banda que es llegeix com un cartell (tinta fosca,
   trama de punts i la data enorme en llima), perquè ha de fer l'efecte d'un
   anunci d'esdeveniment, no d'una peça per llegir. */

.cartell-band { width: var(--shell); margin: 0 auto 30px; }
.cartell-band[hidden] { display: none; }

.cartell-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.75fr) minmax(260px, 1fr);
  gap: 18px;
  align-items: stretch;
}

/* El cartell */
.cartell-poster {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "cap cap"
    "titol data"
    "lema lema"
    "desc desc"
    "fitxa fitxa"
    "xips xips"
    "accions accions";
  align-content: start;
  min-height: 420px;
  padding: 34px 38px 32px;
  border-radius: 34px;
  color: #fff;
  background:
    radial-gradient(circle at 88% 8%, rgba(45, 226, 245, .32), transparent 34%),
    radial-gradient(circle at 6% 100%, rgba(140, 91, 255, .45), transparent 46%),
    linear-gradient(150deg, #151a33, var(--ink) 58%, #0c0f1d);
  box-shadow: 0 26px 70px rgba(17, 21, 38, .22);
}

.cartell-poster__trama {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(rgba(217, 255, 72, .22) 1.2px, transparent 1.4px);
  background-size: 18px 18px;
  -webkit-mask-image: linear-gradient(115deg, transparent 30%, #000 75%);
  mask-image: linear-gradient(115deg, transparent 30%, #000 75%);
}

.cartell-poster--imatge .cartell-poster__img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .32;
}

.cartell-poster__cap { grid-area: cap; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 26px; }

.cartell-poster__tipus,
.cartell-poster__compte {
  margin: 0;
  padding: 7px 12px;
  border-radius: 999px;
  font: 600 10px var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.cartell-poster__tipus { color: var(--ink); background: var(--lime); }
.cartell-poster__compte { color: #dfe4ff; border: 1px solid rgba(255, 255, 255, .26); }

.cartell-poster__titol {
  grid-area: titol;
  align-self: end;
  margin: 0;
  max-width: 640px;
  font: 600 clamp(34px, 4.6vw, 60px)/.98 var(--sans);
  letter-spacing: -.045em;
  text-wrap: balance;
}

.cartell-poster__data {
  grid-area: data;
  align-self: end;
  display: grid;
  justify-items: end;
  margin-left: 24px;
  color: var(--lime);
  text-align: right;
}
.cartell-poster__data strong { font: 700 clamp(46px, 6vw, 84px)/.9 var(--sans); letter-spacing: -.06em; white-space: nowrap; }
.cartell-poster__data span { margin-top: 6px; color: #f3ffd0; font: 600 12px var(--mono); letter-spacing: .14em; text-transform: uppercase; }

.cartell-poster__lema { grid-area: lema; margin: 14px 0 0; color: var(--cyan); font: italic 500 22px/1.25 var(--serif); }

.cartell-poster__desc { grid-area: desc; max-width: 640px; margin: 16px 0 0; color: #c9cfe6; font-size: 15px; line-height: 1.6; }

.cartell-poster__fitxa {
  grid-area: fitxa;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px 22px;
  margin: 24px 0 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .14);
}
.cartell-poster__fitxa div { min-width: 0; }
.cartell-poster__fitxa dt { margin-bottom: 4px; color: #8f98b8; font: 600 9px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.cartell-poster__fitxa dd { margin: 0; color: #fff; font-size: 14px; line-height: 1.4; overflow-wrap: anywhere; }

.cartell-poster__xips { grid-area: xips; display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.cartell-poster__xips span { padding: 5px 10px; border-radius: 999px; color: #dfe4ff; background: rgba(255, 255, 255, .08); font: 600 10px var(--mono); letter-spacing: .06em; text-transform: uppercase; }

.cartell-poster__accions { grid-area: accions; display: flex; flex-wrap: wrap; gap: 12px 22px; align-items: center; margin: 26px 0 0; }

.cartell-boto {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 13px 20px;
  border-radius: 999px;
  color: var(--ink);
  background: var(--lime);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease;
}
.cartell-boto:hover, .cartell-boto:focus-visible { transform: translateY(-1px); box-shadow: 0 10px 26px rgba(217, 255, 72, .28); }
.cartell-boto:focus-visible, .cartell-enllac:focus-visible, .cartell-propers a:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }

.cartell-enllac { color: inherit; font-weight: 600; font-size: 14px; text-decoration: none; border-bottom: 1px solid currentColor; }
.cartell-poster .cartell-enllac { color: #fff; }

/* Propers actes */
.cartell-propers {
  display: flex;
  flex-direction: column;
  padding: 28px 26px 24px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(17, 21, 38, .06);
}
.cartell-propers__eti { width: fit-content; margin: 0 0 12px; padding: 6px 10px; border-radius: 999px; color: #2744bf; background: #e4e9ff; font: 600 9px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.cartell-propers h3 { margin: 0 0 14px; font: 500 28px/1.05 var(--serif); letter-spacing: -.03em; }
.cartell-propers ol { flex: 1; margin: 0 0 16px; padding: 0; list-style: none; }
.cartell-propers li + li { border-top: 1px solid var(--line); }
.cartell-propers li a { display: grid; gap: 3px; padding: 12px 0; color: var(--ink); text-decoration: none; }
.cartell-propers li a[href]:hover strong { color: var(--blue); }
.cartell-propers time { color: var(--coral); font: 600 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.cartell-propers strong { font-size: 15px; line-height: 1.3; }
.cartell-propers li span { color: var(--muted); font-size: 12.5px; line-height: 1.4; }
.cartell-propers > .cartell-enllac { align-self: flex-start; color: var(--ink); }

@media (max-width: 980px) {
  .cartell-layout { grid-template-columns: 1fr; }
  .cartell-poster { min-height: 0; }
}

@media (max-width: 620px) {
  .cartell-poster {
    grid-template-columns: 1fr;
    grid-template-areas: "cap" "data" "titol" "lema" "desc" "fitxa" "xips" "accions";
    padding: 26px 22px 24px;
    border-radius: 26px;
  }
  .cartell-poster__data { justify-items: start; margin: 0 0 12px; text-align: left; }
  .cartell-poster__cap { margin-bottom: 18px; }
  .cartell-propers { border-radius: 26px; padding: 24px 20px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .cartell-boto { transition: none; }
}