/* ---- SAMPLE CARDS ---- */
.samples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.sample-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2rem;
  transition: border-color 0.3s, transform 0.3s;
}

.sample-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-dim);
  transform: translateY(-2px);
}

.sample-card-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.sample-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-weight: 300;
}

.sample-card-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
  margin-top: 1rem;
}

/* ---- PDF MODAL ---- */
.pdf-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.pdf-modal-overlay.active { opacity: 1; pointer-events: all; }

.pdf-modal {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 4px;
  width: 90%;
  max-width: 900px;
  height: 85vh;
  position: relative;
  display: flex;
  flex-direction: column;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s ease;
}

.pdf-modal-overlay.active .pdf-modal { transform: translateY(0) scale(1); }

.pdf-page-slot {
  margin: 0 auto 10px;
  background: #1a1a1a;
}

/* ---- MODAL TOOLBAR (shared 3-column layout) ---- */
.modal-toolbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid #333;
  background: #1a1a1a;
  border-radius: 4px 4px 0 0;
  flex-shrink: 0;
  gap: 0.75rem;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-self: start;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-self: end;
}

.modal-title-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: #e0e0e0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: center;
  min-width: 0;
}

.pdf-toolbar-btn {
  background: #252525;
  border: 1px solid #444;
  border-radius: 4px;
  color: #e0e0e0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  line-height: 1;
  white-space: nowrap;
}

.pdf-toolbar-btn:hover {
  color: #fff;
  border-color: var(--accent);
  background: #2a2a2a;
}

.pdf-zoom-level {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: #e0e0e0;
  min-width: 3.4rem;
  text-align: center;
  user-select: none;
}

.pdf-modal-close {
  background: #252525;
  border: 1px solid #444;
  border-radius: 4px;
  color: #e0e0e0;
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  line-height: 1;
  padding: 0.25rem 0.6rem;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  font-family: var(--font-mono);
}

.pdf-modal-close:hover {
  color: #fff;
  border-color: var(--accent);
  background: #2a2a2a;
}

/* ---- PDF VIEWER ---- */
#pdfViewer {
  flex: 1;
  overflow: auto;
  padding: 0.75rem;
  cursor: grab;
}

#pdfViewer.dragging {
  cursor: grabbing;
  user-select: none;
}

#pdfViewer img,
#pdfViewer canvas {
  pointer-events: none;
  -webkit-user-drag: none;
  user-select: none;
}

/* ---- PDF SPINNER ---- */
.pdf-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 0;
  gap: 1rem;
}

.pdf-spinner-ring {
  width: 32px;
  height: 32px;
  border: 3px solid #333;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: pdf-spin 0.8s linear infinite;
}

.pdf-spinner-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

@keyframes pdf-spin {
  to { transform: rotate(360deg); }
}

/* ---- IMAGE MODAL ---- */
.img-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.img-modal-overlay.active { opacity: 1; pointer-events: all; }

.img-modal {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 4px;
  width: 90%;
  max-width: 900px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s ease;
}

.img-modal-overlay.active .img-modal { transform: translateY(0) scale(1); }


.img-viewer {
  overflow: auto;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.img-nav-btn {
  font-size: 1.4rem;
  padding: 0.2rem 0.6rem;
}

.img-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
  pointer-events: none;
}

.img-counter {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #e0e0e0;
  min-width: 3rem;
  text-align: center;
  user-select: none;
}

.img-viewer img {
  max-width: 100%;
  max-height: calc(90vh - 3.5rem);
  border-radius: 4px;
  user-select: none;
  -webkit-user-drag: none;
}