.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.88) 0%, rgba(0, 0, 0, 0.82) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0.85rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  z-index: 999;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.22);
}

.bottom-bar .btn {
  flex: 1;
  max-width: 220px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

@media (max-width: 576px) {
  .bottom-bar {
    padding: 0.65rem 0.85rem;
  }

  .bottom-bar .btn {
    font-size: 0.9rem;
    padding: 0.5rem 0.75rem;
  }
}

.thumb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 10px;
  padding: 0;
  margin: 0;
}

.thumb-item {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 3px solid transparent;
  background-color: var(--surface-alt);
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.thumb-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
  border-color: var(--primary-color);
}

.thumb-item.active,
.thumb-item.selected {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-shadow), 0 6px 16px rgba(0, 0, 0, 0.14);
  transform: scale(1.04);
}

.thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (max-width: 576px) {
  .thumb-grid {
    gap: 8px;
  }
}

.image-container {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
  background-color: var(--surface-alt);
  background-image:
          linear-gradient(45deg, #f0f0f0 25%, transparent 25%),
          linear-gradient(-45deg, #f0f0f0 25%, transparent 25%),
          linear-gradient(45deg, transparent 75%, #f0f0f0 75%),
          linear-gradient(-45deg, transparent 75%, #f0f0f0 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.preview-wrapper {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
}

.preview-wrapper.is-loading {
  opacity: 0.7;
  pointer-events: none;
}

.preview-wrapper.preview-wrapper--min-620 {
  min-height: 620px;
}

.preview-wrapper.preview-wrapper--min-420 {
  min-height: 420px;
}

.preview-wrapper.preview-wrapper--radius-bottom {
  border-radius: 0 0 8px 8px;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  border-radius: inherit;
}

.loading-overlay.d-none {
  display: none !important;
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-color);
  font-size: 0.9rem;
}

.toolbar {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.tool-btn {
  background-color: var(--surface);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-color);
  font-size: 1.1rem;
}

.tool-btn:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--text-on-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.tool-btn:active {
  transform: translateY(0);
}

@media (max-width: 576px) {
  .tool-btn {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
}

.live-preview-panel-holder {
  position: relative;
}

.live-preview-panel-holder .card {
  position: sticky;
  top: calc(var(--sticky-nav-offset, 80px) + 1rem);
}

.live-preview-panel-holder.is-static .card {
  position: static;
}

@media (max-width: 991.98px) {
  .live-preview-panel-holder .card {
    position: static;
  }
}

.mobile-page-preview-wrapper {
  background-color: var(--surface-alt);
  border-radius: var(--border-radius);
  overflow: hidden;
  min-height: 300px;
}

.mobile-cover-preview,
.mobile-month-preview {
  width: 100%;
  height: auto;
  display: block;
  opacity: 1;
  transition: opacity 0.2s ease;
}

.mobile-cover-preview:not(.is-ready),
.mobile-month-preview:not(.is-ready) {
  opacity: 0.3;
}

@media (min-width: 1200px) {
  .mobile-page-preview-wrapper {
    display: none;
  }
}

.cropper-container {
  background-color: transparent !important;
}

.cropper-view-box {
  outline: 2px solid var(--primary-color);
  outline-offset: -2px;
}

.cropper-crop-box {
  background-color: transparent !important;
}

.cropper-point {
  background-color: var(--primary-color);
  opacity: 0.9;
}

.cropper-line {
  background-color: var(--primary-color);
  opacity: 0.6;
}

.cropper-bg {
  background-image:
          linear-gradient(45deg, #f0f0f0 25%, transparent 25%),
          linear-gradient(-45deg, #f0f0f0 25%, transparent 25%),
          linear-gradient(45deg, transparent 75%, #f0f0f0 75%),
          linear-gradient(-45deg, transparent 75%, #f0f0f0 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

#coverOptionsCanvas.offcanvas-bottom {
  height: 70vh;
  max-height: 85vh;
}

#coverOptionsCanvas .offcanvas-body {
  overflow-y: auto;
}

@media (min-width: 1200px) {
  .sticky-preview-col {
    position: sticky;
    top: var(--sticky-nav-offset, 80px);
    align-self: flex-start;
    z-index: 20;
  }

  .sticky-preview-col .preview-wrapper {
    max-height: calc(100vh - var(--sticky-nav-offset, 80px) - var(--sticky-preview-extra-offset, 0px));
    overflow: hidden;
  }

  .sticky-preview-col object#live-preview-iframe {
    height: calc(100vh - var(--sticky-nav-offset, 80px) - var(--sticky-preview-extra-offset, 0px));
  }
}

@media (max-width: 1199.98px) {
  footer {
    display: none !important;
  }

  .mobile-page-preview-wrapper {
    margin-bottom: 0 !important;
  }
}

.preview-pdf-object {
  z-index: 5;
  transition: opacity 0.2s ease;
  border: none;
  display: block;
}

.preview-wrapper.preview-wrapper--min-400 { min-height: 400px; }
.preview-pdf-object { z-index: 5; transition: opacity 0.2s ease; border: none; display: block; }