/* UTIL-022 So sánh văn bản — ô có số dòng, bảng khác biệt song song/hợp nhất. Màu luôn đi kèm ký hiệu (+ − ~ ·). */
.td-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:4px 10px;margin-bottom:2px}
.sou-page .td-head>label{margin:0}
.td-count{color:var(--sou-muted);font-size:14px;font-variant-numeric:tabular-nums}
.td-mini{display:flex;flex-wrap:wrap;gap:0 8px;margin:0 0 4px}
.td-mini .sou-link-button{padding:0 6px}
.td-editor{display:grid;grid-template-columns:auto minmax(0,1fr);border:1px solid #cfdcf2;border-radius:10px;background:#fff;overflow:hidden}
.td-editor:focus-within{outline:2px solid #3869ed;outline-offset:2px}
.td-gutter{position:relative;overflow:hidden;min-width:3.5ch;background:var(--sou-soft);border-right:1px solid var(--sou-line)}
.td-gutter-in{position:absolute;top:0;right:0;left:0;padding:0 8px 0 6px;white-space:pre;text-align:right;color:var(--sou-muted);font-size:14px;line-height:24px;font-variant-numeric:tabular-nums;will-change:transform}
.sou-page .td-editor textarea{display:block;width:100%;min-height:260px;height:260px;margin:0;padding:10px 12px;border:0;border-radius:0;line-height:24px;font-size:16px;white-space:pre;overflow:auto;resize:vertical}
.sou-page .td-editor textarea:focus{outline:none}
.td-limits{margin:0 0 12px}
.sou-page .td-opts{margin:0;padding:10px 16px 6px;border:1px solid var(--sou-line);border-radius:16px;background:#fbfcff;min-width:0}
.sou-page .td-opts>legend{width:auto;margin:0;padding:0 6px;border:0;font-size:16px;font-weight:700;color:var(--sou-ink)}
.td-opt-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:0 18px}
.td-diacritics{margin:6px 0}
.td-opts>.sou-help{margin:4px 0 0}
.td-reset{margin:0 0 4px}
.td-actions{margin:16px 0 4px}
.td-notes{margin:0 0 10px;padding:0;list-style:none;display:grid;gap:6px}
.td-notes li{padding:8px 12px;border-radius:10px;background:var(--sou-warn-bg);color:var(--sou-warn);font-weight:700;font-size:15px}
.td-result{margin-top:8px}
.td-result.is-stale .td-wrap{opacity:.6}
.sou-page .td-title{font-size:20px;margin:0 0 10px}
.td-title:focus{outline:none}
.td-summary{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 12px;padding:0;list-style:none}
.td-summary li{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;font-size:15px;border:1px solid var(--sou-line);background:#fff}
.td-summary strong{font-variant-numeric:tabular-nums}
.td-sign{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;font-weight:700}
.td-s-add .td-sign{background:var(--sou-ok-bg);color:var(--sou-ok)}
.td-s-del .td-sign{background:var(--sou-err-bg);color:var(--sou-err)}
.td-s-mod .td-sign{background:var(--sou-warn-bg);color:var(--sou-warn)}
.td-s-eq .td-sign{background:var(--sou-soft);color:var(--sou-muted)}
.td-bar{display:flex;flex-wrap:wrap;align-items:center;gap:6px 16px;margin-bottom:10px}
.td-view{margin:0}
.td-view button{min-height:44px}
.td-collapse{margin:0}
.td-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-left:auto}
.td-nav .sou-button{min-height:44px;padding:8px 12px;font-size:15px}
.td-pos{color:var(--sou-muted);font-size:14px;font-variant-numeric:tabular-nums;min-width:9em;text-align:center}
.td-wrap{position:relative;max-height:70vh;overflow:auto}
.td-table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:15px}
.td-table.td-split{min-width:640px}
.td-table th{position:sticky;top:0;z-index:1;padding:8px 10px;background:var(--sou-soft);color:var(--sou-ink);text-align:left;font-size:14px}
.td-table th.td-n,.td-table td.td-n{width:4.2em;text-align:right;color:var(--sou-muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.td-table td{padding:3px 10px;border-top:1px solid #eef2fa;vertical-align:top}
.td-table td.td-c{white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;line-height:1.5}
.td-split td.td-n:nth-child(3){border-left:1px solid var(--sou-line)}
.td-mark{display:inline-block;width:1.2em;margin-left:-2px;font-weight:700}
.td-text{white-space:pre-wrap}
.td-empty{color:var(--sou-muted);font-style:italic;font-size:13px}
.td-insert td.td-c:not(.td-none){background:#e5f7ec}
.td-insert .td-mark{color:var(--sou-ok)}
.td-delete td.td-c:not(.td-none){background:#fde8e6}
.td-delete .td-mark{color:var(--sou-err)}
.td-modify td.td-c{background:#fff6e0}
.td-modify .td-mark{color:var(--sou-warn)}
.td-skip td.td-c{color:var(--sou-muted)}
.td-none{background:repeating-linear-gradient(135deg,#f7f9fd 0 6px,#fff 6px 12px)}
.td-table del{background:#f6c4bf;color:#7a1d14;text-decoration:line-through}
.td-table ins{background:#bfe8cf;color:#0f5131;text-decoration:underline}
.td-old,.td-new{display:block}
.td-unified .td-modify .td-mark{float:left}
.td-old{color:#7a1d14}
.td-new{color:#0f5131}
.td-gap td{padding:2px 10px;background:#f7f9fd;text-align:center}
.td-gap .sou-link-button{font-weight:700;font-size:14px}
.td-row:focus{outline:2px solid #3869ed;outline-offset:-2px}
.td-current td{box-shadow:inset 0 2px 0 #3869ed}
.td-more{margin:10px 0 0}
.td-result .sou-toolbar .sou-button{min-height:44px}
@media(max-width:600px){.sou-page .td-editor textarea{min-height:200px;height:200px}.td-nav{display:grid;grid-template-columns:1fr 1fr;width:100%;margin-left:0}.td-nav .sou-button{padding:8px 6px}.td-pos{grid-column:1/-1;order:3;min-width:0}.td-table th.td-n,.td-table td.td-n{width:46px;padding-left:4px;padding-right:4px;font-size:13px}.td-table td{padding-left:6px;padding-right:6px}}
@media print{.td-mini,.td-opts,.td-actions,.td-bar,.td-limits,.td-inputs{display:none!important}.td-wrap{max-height:none;overflow:visible}}