/* === Mřížka fotek — edge-to-edge v rámci containeru === */
.photo-grid {
  display: grid;
  /* Mobil — 2 sloupce, fine-grained rows pro masonry packing.
     Span pro každou kartu nese --mob-span (server-side template tag mobile_grid_span). */
  grid-template-columns: repeat(2, 1fr);
  grid-auto-rows: 4px;
  gap: 2px;
  /* Přesah přes px-4 padding containeru, ale nepřekračuje jeho šířku */
  width: calc(100% + 2rem);
  margin-left: -1rem;
}

.photo-card {
  position: relative;
  overflow: hidden;
  /* Skeleton shimmer — animovaný gradient na pozadí dokud lazy <img> nedotečé.
     object-fit: cover na <img> ho po loadu kompletně zakryje, žádný JS na detekci
     loaded stavu není potřeba. Animace běží stále, ale na pokrytých kartách je
     neviditelná (a moderní browsery off-screen elementy nerendrují). */
  background: linear-gradient(
    100deg,
    #111827 30%,
    #1f2937 50%,
    #111827 70%
  );
  background-size: 220% 100%;
  animation: photoCardShimmer 1.4s linear infinite;
  /* Mobil — výška kartu daná span * 6 px (4 row + 2 gap), aspect-ratio neaplikujeme.
     Span pochází z mobile_grid_span filteru pro referenční sloupec 194 px (medián mobilu).
     Krajní viewporty (320–430 px) mají max ±15 % crop přes object-fit: cover — akceptovatelné. */
  grid-row-end: span var(--mob-span, 22);
}
@keyframes photoCardShimmer {
  0%   { background-position: 220% 0; }
  100% { background-position: -120% 0; }
}
/* JS přidá .img-loaded na .photo-card jakmile <img> doteče — animaci vypneme,
   aby na velkých albech (tisíce karet) nezůstala 100× běžet pod obrázkem. */
.photo-card.img-loaded {
  background: #111827;
  animation: none;
}
@media (prefers-reduced-motion: reduce) {
  .photo-card {
    background: #111827;
    animation: none;
  }
}

@media (min-width: 640px) {
  .photo-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    grid-auto-rows: 150px;
    gap: 2px;
  }
  .photo-card {
    /* Desktop ignoruje --mob-span; portrétky berou 2 řádky podle CSS class. */
    grid-row-end: auto;
  }
  .photo-card.portrait {
    grid-row: span 2;
  }
}

.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.2s ease;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
  -webkit-touch-callout: none;
}
.photo-card:hover img {
  transform: scale(1.04);
}
.photo-card .overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  transition: background 0.2s ease;
  pointer-events: none;
}
@media (hover: hover) {
  .photo-card:hover .overlay {
    background: rgba(0,0,0,0.25);
  }
  .photo-card:hover .zoom-hint {
    opacity: 1 !important;
  }
}
.photo-card:has(.cart-btn.in-cart) .overlay {
  background: rgba(79,70,229,0.35);
}

/* Rohy karty fotky — cena (vlevo dole) a košík (vpravo dole). Inline-styly v šabloně by
   se násobily přes 100+ fotek per album a zbytečně nafukovaly HTML payload. */
.photo-card-price-corner {
  position: absolute;
  bottom: 0;
  left: 0;
  z-index: 11;
  pointer-events: none;
}
.photo-card-cart-corner {
  position: absolute;
  bottom: 0;
  right: 0;
  z-index: 10;
}
.photo-card-zoom-hint {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.15s;
}
.photo-price-tag {
  display: block;
  background: rgba(0, 0, 0, 0.52);
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 1px 5px 2px;
  border-radius: 0 3px 0 0;
}
.photo-price-tag--free { color: rgba(134, 239, 172, 0.9); }
.photo-price-tag--override { color: rgba(253, 224, 71, 0.9); }
.cart-form { margin: 0; }

/* Košík tlačítko */
.cart-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 3px 0 0 0;
  border: none;
  background: rgba(0,0,0,0.52);
  color: white;
  cursor: pointer;
  transition: background 0.15s;
}
.cart-btn:hover { background: rgba(0,0,0,0.72); }
.cart-btn.in-cart { background: rgba(79,70,229,0.82); color: white; }
.cart-btn.in-cart:hover { background: rgba(67,56,202,0.92); }
@keyframes cartPop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.15); }
  70%  { transform: scale(0.97); }
  100% { transform: scale(1); }
}
.cart-btn.cart-pop { animation: cartPop 0.35s ease forwards; }

/* === „Výběr fotografa" — kruhový badge s SVG hvězdou v levém horním rohu.
   SVG ikona zajistí konzistentní vzhled napříč OS (emoji ⭐ se každý systém renderuje jinak).
   Pointer-events: none — badge nesmí blokovat klik na thumbnail. */
.photo-pick-badge-sm {
  width: 20px;
  height: 20px;
  top: 4px;
  left: 4px;
}
.photo-pick-badge-sm svg {
  width: 12px;
  height: 12px;
}

/* Lightbox badge „Výběr fotografa" — zlatý pill s SVG hvězdou v info baru */
.lb-pick-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: linear-gradient(135deg, #fde047 0%, #f59e0b 100%);
  color: #78350f;
  font-weight: 700;
  font-size: 0.72rem;
  padding: 2px 9px;
  border-radius: 9999px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45);
}
.lb-pick-badge svg {
  width: 12px;
  height: 12px;
}

/* === Lightbox — full-screen === */
#lightbox {
  display: flex;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #000;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  /* Veškerá touch gesta řeší JS (pinch/pan/swipe) — vypneme browser default. */
  touch-action: none;
  overscroll-behavior: contain;
}
#lbCartBtn:disabled { opacity: 0.6; cursor: wait; }
#lightbox img {
  max-width: 100vw;
  max-height: 90vh;
  object-fit: contain;
  user-select: none;
  -webkit-touch-callout: none;
  /* Pinch-zoom transform aplikuje JS přes inline style. transform-origin uprostřed. */
  transform-origin: center center;
  will-change: transform;
  touch-action: none; /* veškerá touch gesta řeší JS (pinch / pan / swipe) */
  /* Blur-up transition: thumb-first placeholder se rozostří, hires preview ostře.
     Délka 0.25 s je perceptual sweet spot — kratší = blikne, delší = pocit zpoždění. */
  transition: filter 0.25s ease-out;
}
#lbImg.lb-blur {
  /* 24 px blur skryje (ne)existenci vodoznaku na 600 px miniatuře — uživatel nikdy
     nevidí ostrou nevodoznakovou verzi před doběhnutím plnohodnotného náhledu. */
  filter: blur(24px);
}
/* Tmavé pozadí + jemný bílý border + blur — viditelné nad jakkoli světlou fotkou. */
.lb-btn {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.55);
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  width: 48px;
  height: 72px;
  border-radius: 8px;
  font-size: 1.8rem;
  cursor: pointer;
  transition: background 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  text-shadow: 0 1px 2px rgba(0,0,0,0.6);
  z-index: 10001;
}
.lb-btn:hover { background: rgba(0,0,0,0.75); }
#lbPrev { left: 0.5rem; }
#lbNext { right: 0.5rem; }
#lbClose {
  position: fixed;
  top: 0.75rem;
  right: 0.75rem;
  background: rgba(0,0,0,0.55);
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  text-shadow: 0 1px 2px rgba(0,0,0,0.6);
  z-index: 10002;
}
#lbClose:hover { background: rgba(0,0,0,0.75); }
#lbInfo {
  position: fixed;
  top: 0.75rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: rgba(255,255,255,0.9);
  font-size: 0.8rem;
  pointer-events: none;
  white-space: nowrap;
  max-width: calc(100vw - 120px);
  overflow: hidden;
  text-overflow: ellipsis;
  background: rgba(0,0,0,0.6);
  padding: 0.3rem 0.9rem;
  border-radius: 9999px;
  backdrop-filter: blur(6px);
}
#lbInfoAlbum { font-weight: 600; }
#lbInfoPrice { color: #c4b5fd; font-weight: 600; }
#lbCounter {
  position: fixed;
  bottom: 0.6rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  background: rgba(0,0,0,0.5);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
}
#lbCartBtn,
#lbDownloadBtn {
  position: fixed;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 1.25rem;
  min-width: 10rem;
  border-radius: 9999px;
  border: none;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
  text-decoration: none;
  z-index: 10001;
}
/* Cart/download button — tmavé pozadí + bílý border, aby byl čitelný nad světlou fotkou.
   #lbDownloadBtn (FREE album) sdílí vzhled s neutrálním stavem #lbCartBtn.lb-cart-add. */
#lbCartBtn.lb-cart-add,
#lbDownloadBtn  {
  background: rgba(0,0,0,0.6);
  color: white;
  border: 1px solid rgba(255,255,255,0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  text-shadow: 0 1px 2px rgba(0,0,0,0.6);
}
#lbCartBtn.lb-cart-add:hover,
#lbDownloadBtn:hover { background: rgba(0,0,0,0.8); }
#lbCartBtn.lb-cart-in  {
  background: #4f46e5;
  color: white;
  border: 1px solid rgba(255,255,255,0.4);
  box-shadow: 0 2px 12px rgba(79,70,229,0.55);
}
#lbCartBtn.lb-cart-in:hover { background: #4338ca; }

/* Posun pod spodek videa — native <video controls> bar by jinak překrýval cart/download button.
   Aktivuje se z base_photos.html pro mediaType==='video'. */
#lbCartBtn.lb-cart-video,
#lbDownloadBtn.lb-cart-video {
  bottom: 5rem;
}

/* === HTMX — ochrana proti double-submit ===
   HTMX automaticky přidá `htmx-request` class na formulář po dobu requestu.
   Pointer-events: none stačí (opacity dim způsoboval viditelný blik karty). */
form.htmx-request button[type="submit"] {
  pointer-events: none;
}

/* === HTMX gridLoader — delay 250 ms před fade-in ===
   Default htmx-indicator fade-in (200 ms ease-in) způsoboval blik spinneru
   pod mřížkou při každém infinite-scroll fetchu. Tady ho ukáž až když request
   trvá déle než 250 ms (pomalé spojení / velké stránky). Hide je instantní —
   .htmx-request odejde, opacity skočí na 0 bez transition. */
#gridLoader {
  opacity: 0;
  transition: opacity 0ms;
}
.htmx-request#gridLoader {
  opacity: 1;
  transition: opacity 200ms ease-in 250ms;
}

/* === Plovoucí košík bar — decentní glass toast === */
#cartBar {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  /* calc(100% + 1.5rem) = vlastní výška + bottom offset + rezerva na shadow,
     aby v skrytém stavu nic nepokukovalo nad viewport bottom. */
  transform: translateX(-50%) translateY(calc(100% + 1.5rem));
  transition: transform 0.3s cubic-bezier(.4,0,.2,1);
  z-index: 50;
  white-space: nowrap;
  /* Záloha pro prohlížeče bez backdrop-filter — když není visible, nemá smysl
     ani render layer udržovat. */
  pointer-events: none;
}
#cartBar.visible {
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
#cartBar a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s;
  background: rgba(17, 24, 39, 0.94);
  color: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
#cartBar a:hover {
  background: rgba(17, 24, 39, 0.98);
  border-color: rgba(255, 255, 255, 0.14);
}
#cartBar .cartbar-sep {
  color: rgba(255, 255, 255, 0.35);
  font-weight: 400;
  margin: 0 0.125rem;
}
#cartBar .cartbar-eur {
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.75rem;
  font-weight: 400;
  margin-left: 0.5rem;
}
.dark #cartBar a {
  background: rgba(31, 41, 55, 0.94);
  border-color: rgba(255, 255, 255, 0.10);
}
.dark #cartBar a:hover {
  background: rgba(31, 41, 55, 0.98);
  border-color: rgba(255, 255, 255, 0.18);
}