/* Celoobrazovkový moderní prohlížeč snímku (Viewer Modal) */

#viewer-modal {
  position: fixed;
  inset: 0;
  z-index: 500;
  background-color: rgba(10, 12, 16, 0.96);
  backdrop-filter: blur(10px);
  display: none;
  flex-direction: column;
  overflow: hidden;
  touch-action: none;
  -webkit-touch-callout: none;
}

#viewer-modal.open {
  display: flex;
}

#viewer-modal:fullscreen {
  background-color: #000;
}

/* Hlavní plátno / viewport pro snímek */
.viewer-viewport {
  position: relative;
  flex: 1;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: #000;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  -webkit-touch-callout: none;
}

.viewer-viewport.grabbing {
  cursor: grabbing;
}

.viewer-image {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
  will-change: transform;
  max-width: none;
  max-height: none;
  visibility: hidden;
  -webkit-user-drag: none;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

.viewer-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
  touch-action: none;
}

/* Výrazný grafický indikátor načítání snímku */
.image-loading-overlay {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  background: radial-gradient(circle at center, rgba(17, 21, 24, 0.85) 0%, rgba(10, 12, 16, 0.5) 70%, transparent 100%);
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.loading-overlay-card {
  background-color: rgba(22, 27, 34, 0.95);
  border: 1px solid var(--color-ubas-orange);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.8), 0 0 24px rgba(254, 121, 6, 0.3);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  backdrop-filter: blur(14px);
  min-width: 240px;
}

.loading-overlay-spinner {
  width: 38px;
  height: 38px;
  border: 3.5px solid rgba(254, 121, 6, 0.2);
  border-top-color: var(--color-ubas-orange);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

.loading-overlay-title {
  color: var(--color-text-white);
  font-size: 15px;
  font-weight: 700;
}

.loading-overlay-sub {
  color: var(--color-text-muted);
  font-size: 12px;
}

/* Horní plovoucí lišta s ovládacími prvky */
.viewer-top-bar {
  position: absolute;
  top: 14px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
  z-index: 30;
  gap: 12px;
  touch-action: auto;
}

.viewer-top-group {
  display: flex;
  gap: 8px;
  align-items: center;
  pointer-events: auto;
  flex-wrap: wrap;
}

/* Pravá skupina tlačítek zarovnaná doprava */
.viewer-top-group.right {
  margin-left: auto;
  flex-wrap: nowrap;
}

/* Tlačítka ve vieweru */
.viewer-btn {
  background-color: rgba(26, 32, 38, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text-white);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

.viewer-btn:hover {
  background-color: rgba(36, 44, 53, 0.98);
  border-color: var(--color-ubas-orange);
  color: var(--color-ubas-orange);
}

.viewer-btn.active {
  background-color: var(--color-ubas-red);
  border-color: var(--color-ubas-orange);
  color: var(--color-text-white);
}

/* Shodná šířka pro pravá tlačítka (Vrstvy, Informace, Zavřít) */
.viewer-btn.uniform-width {
  width: 106px;
  justify-content: center;
  text-align: center;
}

.viewer-btn.close {
  background-color: rgba(158, 26, 23, 0.88);
  border-color: rgba(254, 121, 6, 0.5);
}

.viewer-btn.close:hover {
  background-color: var(--color-ubas-red);
  border-color: var(--color-ubas-orange);
  color: var(--color-text-white);
}

/* Seskupená tlačítka Zoom (+) a (−) */
.viewer-btn-group {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.viewer-btn-group .viewer-btn.group-item {
  padding: 7px 11px;
  border-radius: 0;
}

.viewer-btn-group .viewer-btn.group-item:first-child {
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
  border-right: none;
}

.viewer-btn-group .viewer-btn.group-item:last-child {
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}

/* Ukazatel zoomu a měřítka */
.viewer-zoom-badge {
  background-color: rgba(17, 21, 24, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--color-text-light);
  border-radius: var(--radius-md);
  padding: 6px 12px;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  backdrop-filter: blur(8px);
  white-space: nowrap;
}

.viewer-zoom-badge b {
  color: var(--color-ubas-orange);
}

/* Grafické měřítko (Scale bar) */
.viewer-scale-bar {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.scale-bar-line {
  height: 3px;
  background-color: var(--color-text-white);
  border-left: 2px solid var(--color-text-white);
  border-right: 2px solid var(--color-text-white);
}

.scale-bar-label {
  font-size: 10px;
  color: var(--color-text-light);
  line-height: 1;
}

/* Spodní lišta pro přepínání produktů */
.viewer-product-bar {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: rgba(17, 21, 24, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  padding: 5px 8px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
  z-index: 30;
  max-width: calc(100% - 32px);
  overflow-x: auto;
  touch-action: pan-x;
}

.product-pill-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.product-pill-btn:hover {
  color: var(--color-text-white);
  border-color: rgba(255, 255, 255, 0.2);
}

.product-pill-btn.active {
  background-color: var(--color-ubas-red);
  color: var(--color-text-white);
  border-color: var(--color-ubas-orange);
  box-shadow: 0 2px 8px rgba(158, 26, 23, 0.5);
}

.product-nav-arrow {
  background: transparent;
  border: none;
  color: var(--color-text-light);
  font-size: 14px;
  padding: 4px 6px;
  cursor: pointer;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
}

.product-nav-arrow:hover {
  color: var(--color-ubas-orange);
}

/* Mobilní rozbalovací seznam pro výběr typu snímku */
.mobile-product-select {
  display: none;
  background: transparent;
  color: var(--color-text-white);
  border: none;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  padding: 6px 8px;
  width: 100%;
  outline: none;
}

.mobile-product-select option {
  background-color: var(--color-panel-dark);
  color: var(--color-text-white);
}

/* Navigační minimapa */
.viewer-minimap {
  position: absolute;
  bottom: 20px;
  right: 20px;
  width: 130px;
  background-color: #000;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  z-index: 25;
  pointer-events: none;
}

.minimap-thumb {
  width: 100%;
  height: 100%;
  background-position: center;
  background-size: cover;
  opacity: 0.65;
}

.minimap-viewport-box {
  position: absolute;
  border: 2px solid var(--color-ubas-orange);
  background-color: rgba(254, 121, 6, 0.2);
  pointer-events: none;
}

/* Plovoucí stavový pruh načítání plného rozlišení */
.full-res-loader {
  position: absolute;
  top: 64px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(17, 21, 24, 0.94);
  border: 1px solid var(--color-ubas-orange);
  color: var(--color-text-white);
  padding: 7px 18px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 10px;
  backdrop-filter: blur(8px);
}

.loader-spinner-mini {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(254, 121, 6, 0.3);
  border-top-color: var(--color-ubas-orange);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Responzivní přizpůsobení na mobilu */
@media (max-width: 720px) {
  .viewer-top-bar {
    top: 10px;
    left: 10px;
    right: 10px;
    flex-direction: column;
    gap: 8px;
  }

  .viewer-top-group {
    width: 100%;
  }

  .viewer-top-group.right {
    margin-left: 0;
    justify-content: flex-end;
  }

  .viewer-btn.uniform-width {
    flex: 1;
    width: auto;
    min-width: 70px;
    padding: 6px 8px;
    font-size: 11.5px;
  }

  /* Mobilní lišta produktů: celá šířka s výběrem */
  .viewer-product-bar {
    width: calc(100% - 24px);
    justify-content: space-between;
    padding: 4px 6px;
    bottom: 12px;
  }

  .product-pill-btn {
    display: none;
  }

  .mobile-product-select {
    display: block;
  }

  .viewer-minimap {
    display: none; /* Pro čistotu na malých displejích */
  }

  .viewer-zoom-badge {
    padding: 4px 8px;
    font-size: 11px;
  }
}