/* === Image to PDF — Tool Styles === */

.itp-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1rem 3rem;
}

/* Hero */
.itp-hero {
  padding-top: 2.5rem;
  margin-bottom: 1.5rem;
}
.itp-hero h1 {
  font-size: clamp(1.75rem, 1rem + 3vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text-primary);
}
.itp-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin: 0;
}

/* Drop Zone */
.itp-dropzone {
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  padding: 2.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  margin-bottom: 1.5rem;
  user-select: none;
}
.itp-dropzone:hover,
.itp-dropzone:focus,
.itp-dragover {
  border-color: var(--accent);
  background: var(--accent-light);
  outline: none;
}
.itp-dropzone__inner {
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.itp-dropzone__icon {
  font-size: 2.5rem;
  display: block;
}
.itp-dropzone__text {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  margin: 0;
}
.itp-dropzone__or {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}
.itp-dropzone__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin: 0;
}

/* Thumbnails Container */
.itp-thumbnails-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}
.itp-thumbnails-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}
.itp-image-count {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}
.itp-thumbnails-actions {
  display: flex;
  gap: 6px;
}
.itp-reorder-hint {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin: 0.75rem 0 0;
  text-align: center;
}

/* Thumbnails Grid */
.itp-thumbnails-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.75rem;
}

/* Thumbnail Card */
.itp-thumb-card {
  background: var(--bg-page, #fff);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: grab;
  transition: border-color var(--transition), box-shadow var(--transition);
  position: relative;
}
.itp-thumb-card:hover {
  border-color: var(--accent);
}
.itp-thumb-card.itp-dragging {
  opacity: 0.45;
  cursor: grabbing;
}
.itp-thumb-card.itp-drag-over {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent);
}
.itp-thumb-img-wrap {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--bg-hover);
  overflow: hidden;
}
.itp-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.itp-thumb-badge {
  position: absolute;
  top: 4px;
  left: 4px;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1.4;
  pointer-events: none;
}
.itp-thumb-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  background: rgba(0,0,0,0.55);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 0.75rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.itp-thumb-remove:hover {
  background: #ef4444;
}
.itp-thumb-info {
  padding: 6px 8px 4px;
  flex: 1;
}
.itp-thumb-name {
  font-size: 0.72rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
}
.itp-thumb-dims {
  font-size: 0.68rem;
  color: var(--text-secondary);
}
.itp-thumb-controls {
  display: flex;
  border-top: 1px solid var(--border-color);
}
.itp-thumb-btn {
  flex: 1;
  padding: 5px 0;
  background: transparent;
  border: none;
  font-size: 0.7rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  line-height: 1;
}
.itp-thumb-btn:hover {
  background: var(--bg-hover);
  color: var(--accent);
}
.itp-thumb-btn + .itp-thumb-btn {
  border-left: 1px solid var(--border-color);
}

/* Settings Panel */
.itp-settings-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}
.itp-settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.5rem;
}
.itp-setting-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.itp-setting-group--wide {
  grid-column: span 2;
}
.itp-setting-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.itp-setting-group select {
  padding: 7px 10px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-page, #fff);
  color: var(--text-primary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: border-color var(--transition);
}
.itp-setting-group select:focus {
  outline: none;
  border-color: var(--accent);
}
.itp-filename-wrapper {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.itp-filename-wrapper:focus-within {
  border-color: var(--accent);
}
.itp-filename-wrapper input {
  flex: 1;
  padding: 7px 10px;
  border: none;
  background: var(--bg-page, #fff);
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
}
.itp-filename-ext {
  padding: 7px 10px 7px 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: var(--bg-page, #fff);
  white-space: nowrap;
}

/* Progress */
.itp-progress-section {
  margin-bottom: 1rem;
}
.itp-progress-bar-wrap {
  height: 8px;
  background: var(--bg-hover);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 8px;
}
.itp-progress-bar {
  height: 100%;
  width: var(--itp-progress, 0%);
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.2s ease;
}
.itp-progress-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin: 0;
  text-align: center;
}

/* Error */
.itp-error {
  padding: 10px 14px;
  border-radius: 8px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
  font-size: 0.875rem;
  margin-bottom: 12px;
}

/* Actions */
.itp-actions {
  margin-bottom: 1.25rem;
}

/* Result */
.itp-result-section {
  background: var(--bg-card);
  border: 1px solid rgba(34, 197, 94, 0.35);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
}
.itp-result-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.itp-result-success {
  font-size: 0.9rem;
  font-weight: 600;
  color: #16a34a;
}
.itp-result-meta {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Buttons */
.itp-btn {
  padding: 8px 22px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition), opacity var(--transition);
  white-space: nowrap;
}
.itp-btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.itp-btn--primary:hover:not(:disabled) {
  background: var(--accent-hover, #1d4ed8);
  border-color: var(--accent-hover, #1d4ed8);
}
.itp-btn--primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.itp-btn--secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}
.itp-btn--secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.itp-btn--danger {
  background: transparent;
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.4);
}
.itp-btn--danger:hover {
  background: rgba(239, 68, 68, 0.08);
  border-color: #ef4444;
}
.itp-btn--sm {
  padding: 5px 12px;
  height: 30px;
  font-size: 0.8rem;
}
.itp-btn--lg {
  height: 44px;
  padding: 10px 28px;
  font-size: 0.95rem;
}

/* FAQ */
.itp-faq {
  margin-top: 2.5rem;
}
.itp-faq h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 14px;
}
.itp-faq__item {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 8px;
  overflow: hidden;
}
.itp-faq__item summary {
  padding: 12px 16px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}
.itp-faq__item summary::-webkit-details-marker { display: none; }
.itp-faq__item summary::after {
  content: '+';
  font-size: 1.1rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  margin-left: 8px;
  transition: transform var(--transition);
}
.itp-faq__item[open] summary::after {
  transform: rotate(45deg);
}
.itp-faq__item p {
  padding: 0 16px 14px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Responsive */
@media (max-width: 600px) {
  .itp-settings-grid {
    grid-template-columns: 1fr;
  }
  .itp-setting-group--wide {
    grid-column: span 1;
  }
  .itp-thumbnails-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 0.5rem;
  }
  .itp-result-section {
    flex-direction: column;
    align-items: flex-start;
  }
  .itp-btn--lg {
    width: 100%;
  }
  .itp-actions {
    display: flex;
  }
  .itp-actions .itp-btn--lg {
    flex: 1;
  }
}