.source-import-dialog { width: min(680px, calc(100vw - 40px)); max-height: calc(100vh - 48px); box-sizing: border-box; overflow: auto; margin: auto; color: var(--text-main); font: inherit; text-align: left; }
.source-import-dialog::backdrop { background: transparent; }
.source-import-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.source-import-heading h3 { margin: 0; }
.source-import-close, .source-import-remove { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; flex: 0 0 28px; padding: 0; border: 0; border-radius: 4px; color: var(--yt-muted); background: transparent; cursor: pointer; }
.source-import-close:hover, .source-import-remove:hover:not(:disabled) { color: var(--yt-text); background: var(--yt-surface); }
.source-import-remove:disabled { opacity: .3; cursor: default; }
.source-import-dropzone { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 28px 16px; border: 1px dashed var(--yt-border-strong); border-radius: 8px; background: var(--yt-window); text-align: center; }
.source-import-dropzone > i { font-size: 28px; color: var(--yt-muted); }
.source-import-dropzone p { margin: 0; font-size: 14px; }
.source-import-dropzone small { font-size: 11px; color: var(--yt-muted); }
.source-import-dropzone.is-dragging { border-color: var(--yt-accent); background: color-mix(in srgb, var(--yt-accent) 12%, var(--yt-window)); }
.source-import-list-heading { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin: 20px 0 10px; }
.source-import-list-heading h3 { margin: 0; font-size: 13px; font-weight: 500; }
.source-import-summary, .source-import-empty { font-size: 11px; color: var(--yt-muted); }
.source-import-empty { margin: 0; padding: 24px 12px; text-align: center; border: 1px solid var(--yt-border); border-radius: 6px; }
.source-import-list { max-height: min(32vh, 280px); overflow-y: auto; margin: 0; padding: 0; list-style: none; }
.source-import-item { display: flex; align-items: center; gap: 12px; padding: 10px 8px; border-bottom: 1px solid var(--yt-border); }
.source-import-file { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.source-import-filename { font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.source-import-file small { color: var(--yt-muted); font-size: 10px; }
.source-import-badge { flex-shrink: 0; padding: 3px 7px; border-radius: 4px; background: var(--yt-surface); color: var(--yt-muted); font-size: 11px; }
.is-error .source-import-badge, .is-invalid .source-import-badge, .source-import-error { color: var(--yt-danger); }
.source-import-error { margin: 12px 0 0; font-size: 12px; overflow-wrap: anywhere; }
.source-import-actions { margin-top: 18px; }
.source-import-dialog [hidden] { display: none !important; }

.source-import-submit { border: 1px solid transparent; }
.source-import-dialog .source-import-submit:disabled { color: var(--text-muted); background: var(--yt-disabled); border-color: var(--border-color); opacity: 1; cursor: not-allowed; }

.source-import-dialog, .source-import-list { scrollbar-width: none; }
.source-import-dialog::-webkit-scrollbar, .source-import-list::-webkit-scrollbar { display: none; width: 0; height: 0; }

.is-duplicate .source-import-badge { color: var(--yt-warning); background: rgba(var(--yt-warning-rgb), .1); }

:root[data-theme="light"] .is-duplicate .source-import-badge { color: var(--yt-text); background: rgba(var(--yt-warning-rgb), .22); font-weight: 500; }