/* ============================================================
   VÁNOČNÍ KONCERT 18. 12. 2026 — popup s plakátem (dočasné)
   Vykresluje js/promo.js, od 19. 12. se nezobrazí. Po koncertu lze
   smazat promo.css + promo.js, plakát a 2 řádky v index.html.
   ============================================================ */

/* Šířka plakátu: max. 440 px, ale vždy se vejde na šířku i výšku obrazovky.
   8rem = okraje + rámeček + tlačítko, .7071 = poměr stran plakátu (1200 × 1697). */
.promo {
  --pw: min(440px, 100vw - 3.2rem, (100vh - 8rem) * .7071);
  position: fixed; inset: 0; z-index: 400;
  width: 100%; height: 100%; max-width: none; max-height: none;
  margin: 0; padding: 1rem; border: 0; overflow-y: auto;
  display: grid; color: var(--text);
  background: radial-gradient(ellipse 50% 45% at 50% 50%, rgba(200,162,76,.16), transparent 70%), rgba(6,6,8,.82);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  opacity: 0; transition: opacity .3s var(--ease);
}
@supports (height: 100svh) {
  .promo { --pw: min(440px, 100vw - 3.2rem, (100svh - 8rem) * .7071); }
}
.promo:not([open]) { display: none; }
.promo::backdrop { background: transparent; }
.promo.is-open { opacity: 1; transition-duration: .5s; }

.promo__card {
  position: relative; margin: auto; width: calc(var(--pw) + 1.2rem + 2px); padding: .6rem;
  background: var(--bg-2); border: 1px solid var(--line-2); border-radius: var(--radius-lg);
  box-shadow: 0 50px 120px -30px rgba(0,0,0,.95);
  transform: translateY(28px) scale(.97); transition: transform .3s var(--ease);
}
.promo.is-open .promo__card { transform: none; transition-duration: .7s; }
.promo__title { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; } /* jen pro čtečky */
.promo__poster { display: block; overflow: hidden; border-radius: calc(var(--radius-lg) - .6rem); background: #0b0d13; }
.promo__poster img { width: 100%; height: auto; transition: transform .8s var(--ease); }
.promo__poster:hover img { transform: scale(1.025); }
.promo__cta { margin-top: .6rem; }

.promo__close {
  position: absolute; top: -.85rem; right: -.85rem; z-index: 2;
  width: 2.5rem; height: 2.5rem; border-radius: 50%; display: grid; place-items: center;
  background: var(--surface-2); border: 1px solid var(--line-2); color: var(--text);
  box-shadow: 0 8px 22px -6px rgba(0,0,0,.7);
  transition: color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}
.promo__close:hover { color: var(--accent); border-color: var(--accent); transform: scale(1.08); }
.promo__close:focus-visible, .promo__cta:focus-visible, .promo-chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* Telefon na šířku / nízké okno: plakát vlevo, tlačítko vedle (jinak by byl plakát drobný) */
@media (orientation: landscape) and (max-height: 520px) {
  .promo { --pw: min(440px, 100vw - 19rem, (100vh - 3.2rem - 2px) * .7071); }
  @supports (height: 100svh) {
    .promo { --pw: min(440px, 100vw - 19rem, (100svh - 3.2rem - 2px) * .7071); }
  }
  .promo__card { display: flex; align-items: center; gap: 1rem; width: auto; }
  .promo__poster { flex: none; width: var(--pw); }
  .promo__cta { width: auto; margin: 0 .4rem 0 0; white-space: nowrap; }
}

/* Zamknutí scrollu stránky pod popupem (gutter = bez poskočení layoutu) */
html.promo-lock { scrollbar-gutter: stable; }
html.promo-lock body { overflow: hidden; }

/* Připomínka po zavření — vlevo dole (zrcadlí košík vpravo), nad Spotify lištou */
.promo-chip {
  position: fixed; left: clamp(1rem, 3vw, 1.4rem); bottom: 104px; z-index: 95;
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .6rem 1.1rem .6rem .85rem; border-radius: 100px;
  background: rgba(17,17,20,.88); border: 1px solid rgba(200,162,76,.55);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  font-size: .85rem; font-weight: 500; line-height: 1.2; color: var(--text);
  box-shadow: 0 14px 34px -12px rgba(0,0,0,.7);
  opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity .45s var(--ease), transform .45s var(--ease), visibility 0s linear .45s, border-color .3s var(--ease), bottom .3s var(--ease);
}
.promo-chip.is-on { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.promo-chip.is-on:hover { border-color: var(--accent); transform: translateY(-2px); }
.promo-chip svg { color: var(--accent); flex: none; }
.promo-chip__date { color: var(--accent); font-weight: 600; }
body.player-off .promo-chip { bottom: 4.2rem; } /* nad tlačítkem „Poslouchat" */

@media (prefers-reduced-motion: reduce) {
  .promo__card, .promo-chip { transform: none; }
}