/* ═══ Document Library ═══ */
.library-panel {
  width: 100%;
  max-width: 640px;
  background: var(--bg-primary);
  border: 0.5px solid var(--border-tertiary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 4px;
}

.library-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-bottom: 0.5px solid var(--border-tertiary);
  cursor: pointer;
  user-select: none;
}

.library-header:hover { background: var(--bg-secondary); }

.library-icon { font-size: 14px; }

.library-title {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  flex: 1;
}

.library-badge {
  font-size: 10px;
  font-family: var(--font-mono);
  padding: 1px 6px;
  border-radius: 10px;
  background: var(--bg-secondary);
  color: var(--text-tertiary);
}

.library-chevron {
  font-size: 10px;
  color: var(--text-tertiary);
  transition: transform 0.2s;
}

.library-panel.open .library-chevron { transform: rotate(90deg); }

.library-body {
  display: none;
  max-height: 280px;
  overflow-y: auto;
}

.library-panel.open .library-body { display: block; }

.library-empty {
  padding: 20px;
  text-align: center;
  font-size: 12px;
  color: var(--text-tertiary);
}

.library-loading {
  padding: 16px;
  text-align: center;
  font-size: 11px;
  color: var(--text-tertiary);
}

/* File list items */
.lib-file {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-bottom: 0.5px solid var(--border-tertiary);
  cursor: pointer;
  transition: background 0.1s;
}

.lib-file:last-child { border-bottom: none; }
.lib-file:hover { background: var(--bg-secondary); }
.lib-file.selected { background: var(--teal-light); }

.lib-file-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}

.lib-file.selected .lib-file-icon { background: rgba(13, 148, 136, 0.15); }

.lib-file-info { flex: 1; min-width: 0; }

.lib-file-name {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lib-file-meta {
  font-size: 10px;
  color: var(--text-tertiary);
  margin-top: 1px;
}

.lib-file-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.15s;
}

.lib-file:hover .lib-file-actions { opacity: 1; }

.lib-action-btn {
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lib-action-btn:hover { background: var(--bg-tertiary); color: var(--text-secondary); }
.lib-action-btn.delete:hover { background: var(--coral-light); color: var(--coral); }

/* Library toolbar */
.library-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-bottom: 0.5px solid var(--border-tertiary);
  background: var(--bg-secondary);
}

.lib-upload-btn {
  font-size: 11px;
  padding: 4px 10px;
  border: 0.5px solid var(--border-secondary);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
  font-family: var(--font-sans);
  display: flex;
  align-items: center;
  gap: 4px;
}

.lib-upload-btn:hover { background: var(--teal-light); border-color: var(--teal); }

.lib-refresh-btn {
  margin-left: auto;
  font-size: 11px;
  padding: 4px 8px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  font-family: var(--font-sans);
}

.lib-refresh-btn:hover { color: var(--text-secondary); background: var(--bg-primary); }

/* Save to library checkbox in upload card */
.save-to-lib-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px 2px;
  font-size: 11px;
  color: var(--text-secondary);
}

.save-to-lib-row input[type="checkbox"] {
  accent-color: var(--teal);
}