.iwc-subtitle{--ink:#172e29;--green:#176447;--pale:#eaf4ee;--canvas:#f5f8f6;--muted:#526960;--line:#d4e1d9;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--canvas)}.iwc-subtitle, .iwc-subtitle *{box-sizing:border-box}.iwc-subtitle{margin:0}.iwc-subtitle header{background:#fff;border-bottom:1px solid var(--line);padding:22px max(24px,calc((100% - 1320px)/2));display:flex;gap:20px;align-items:center}.iwc-subtitle .brand{font-weight:800;font-size:21px;letter-spacing:-.7px}.iwc-subtitle .brand span{color:var(--green)}.iwc-subtitle .privacy{margin-left:auto;font-size:13px;color:var(--muted)}.iwc-subtitle{max-width:1368px;margin:auto;padding:42px 24px}.iwc-subtitle .intro{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:30px}.iwc-subtitle .eyebrow{font-size:11px;font-weight:750;letter-spacing:1.8px;color:var(--green);margin:0 0 10px}.iwc-subtitle h1{font-family:Georgia,serif;font-size:clamp(34px,4vw,52px);font-weight:500;letter-spacing:-1.5px;margin:0 0 12px;text-align:left}.iwc-subtitle h2{font-size:18px;letter-spacing:-.4px;margin:0 0 12px}.iwc-subtitle p{line-height:1.65;margin:8px 0 16px}.iwc-subtitle .lede{color:var(--muted);font-size:17px}.iwc-subtitle .format-note{border-left:3px solid var(--green);padding:14px 24px;display:grid;gap:8px}.iwc-subtitle .format-note strong{font:24px Georgia,serif}.iwc-subtitle .format-note span{font-size:13px;color:var(--muted)}.iwc-subtitle .panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px}.iwc-subtitle .import{border-top:4px solid var(--green)}.iwc-subtitle .import p{max-width:780px;color:var(--muted)}.iwc-subtitle .actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.iwc-subtitle button, .iwc-subtitle .file-button, .iwc-subtitle select, .iwc-subtitle input, .iwc-subtitle textarea{font:inherit}.iwc-subtitle button, .iwc-subtitle .file-button{border:1px solid #b5c9bc;border-radius:8px;min-height:44px;padding:10px 15px;background:white;color:var(--ink);font-size:13px;font-weight:650;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}.iwc-subtitle button:hover, .iwc-subtitle .file-button:hover{background:var(--pale)}.iwc-subtitle button.primary{background:var(--green);color:white;border-color:var(--green)}.iwc-subtitle button:disabled{cursor:default;opacity:.5}.iwc-subtitle button:focus-visible, .iwc-subtitle input:focus-visible, .iwc-subtitle select:focus-visible, .iwc-subtitle textarea:focus-visible, .iwc-subtitle .file-button:focus-within{outline:3px solid #25835d;outline-offset:3px}.iwc-subtitle .file-button input{position:absolute;width:1px;height:1px;opacity:0}.iwc-subtitle label{display:block;font-size:13px;font-weight:650;margin:12px 0 8px}.iwc-subtitle input, .iwc-subtitle select, .iwc-subtitle textarea{border:1px solid #a7bdb0;border-radius:7px;background:#fff;color:var(--ink);min-height:44px;padding:10px 12px;max-width:100%}.iwc-subtitle textarea{width:100%;line-height:1.6;resize:vertical}.iwc-subtitle #source, .iwc-subtitle #export-preview{font:13px/1.6 ui-monospace,monospace}.iwc-subtitle #source-panel{margin-top:20px}.iwc-subtitle .small{font-size:12px;color:var(--muted);line-height:1.65}.iwc-subtitle .badge{font-size:11px;font-weight:650;border:1px solid var(--line);background:var(--pale);padding:6px 9px;border-radius:5px;white-space:nowrap}.iwc-subtitle #status{min-height:32px;font-size:14px;padding:10px 2px;color:var(--green)}.iwc-subtitle #status.error{color:#9b3025}.iwc-subtitle .workbar{display:flex;justify-content:space-between;gap:15px;align-items:center;margin:5px 0 18px}.iwc-subtitle .workbar p{font-size:14px;font-weight:650;margin:0}.iwc-subtitle .workgrid{display:grid;grid-template-columns:minmax(280px,.86fr) minmax(0,1.4fr);gap:20px;align-items:start}.iwc-subtitle .editor-stack{display:grid;gap:20px}.iwc-subtitle .section-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px}.iwc-subtitle .section-head h2{margin:0}.iwc-subtitle .section-head input{width:60%;font-size:13px}.iwc-subtitle .cue-panel{padding:20px 0 0;overflow:hidden}.iwc-subtitle .cue-panel .section-head{padding:0 20px}.iwc-subtitle .cue-list{max-height:690px;overflow:auto;border-top:1px solid var(--line)}.iwc-subtitle .cue{display:block;text-align:left;width:100%;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:18px 20px;min-height:100px;background:white;font-weight:400}.iwc-subtitle .cue[aria-current=true]{background:var(--pale);box-shadow:inset 4px 0 var(--green)}.iwc-subtitle .cue time{display:block;font:11px ui-monospace,monospace;color:var(--muted);margin-bottom:8px}.iwc-subtitle .cue span{display:block;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.55}.iwc-subtitle .pagination{padding:14px;display:flex;justify-content:space-between;align-items:center;gap:8px}.iwc-subtitle .pagination button{font-size:11px;padding:8px}.iwc-subtitle .pagination span{font-size:11px;color:var(--muted)}.iwc-subtitle .ruler{display:flex;justify-content:space-between;border-top:2px solid var(--green);padding-top:10px;margin:20px 0 8px;font:9px ui-monospace,monospace;letter-spacing:1px;color:var(--muted)}.iwc-subtitle .time-fields{display:grid;grid-template-columns:1fr 1fr;gap:16px}.iwc-subtitle .time-fields input{width:100%;font-family:ui-monospace,monospace}.iwc-subtitle #cue-text{font-size:16px}.iwc-subtitle .video-panel video{display:block;width:100%;max-height:300px;background:#16221e;border-radius:8px;margin-top:16px}.iwc-subtitle .caption-preview{background:#edf2ee;border-radius:8px;min-height:68px;padding:18px;text-align:center;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;margin-top:14px}.iwc-subtitle #offset{width:115px}.iwc-subtitle .diagnostics{margin-top:20px}.iwc-subtitle .diagnostics li, .iwc-subtitle #losses li{margin-bottom:10px;font-size:13px;line-height:1.6}.iwc-subtitle footer{font-size:12px;color:var(--muted);margin-top:30px;max-width:850px;line-height:1.7}.iwc-subtitle dialog{width:min(760px,calc(100% - 32px));max-height:90vh;border:1px solid var(--line);border-radius:16px;padding:28px;color:var(--ink)}.iwc-subtitle dialog::backdrop{background:#142c2380}.iwc-subtitle .ack{display:flex;gap:10px;align-items:center;font-weight:500;margin:18px 0}.iwc-subtitle .ack input{min-height:20px;width:20px;flex-shrink:0}.iwc-subtitle #export-status{font-size:13px;color:var(--green)}.iwc-subtitle [hidden]{display:none!important}.iwc-subtitle .skip, .iwc-subtitle .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.iwc-subtitle .skip:focus{width:auto;height:auto;clip-path:none;padding:15px;background:white;z-index:2}.iwc-subtitle body:has(dialog[open]){overflow:hidden}@media(max-width:800px){.iwc-subtitle{padding:28px 16px}.iwc-subtitle .intro{display:block}.iwc-subtitle .format-note{margin-top:24px;padding:8px 16px}.iwc-subtitle .workgrid{grid-template-columns:1fr}.iwc-subtitle .cue-list{max-height:320px}.iwc-subtitle .workbar{align-items:flex-start;flex-direction:column}.iwc-subtitle .panel{padding:18px}.iwc-subtitle .cue-panel{padding:18px 0 0}.iwc-subtitle .privacy{display:none}.iwc-subtitle header{padding:18px 16px;gap:12px}.iwc-subtitle .brand{font-size:18px}.iwc-subtitle .badge{font-size:10px}.iwc-subtitle .time-fields{gap:10px}.iwc-subtitle .section-head{flex-wrap:wrap}.iwc-subtitle dialog{padding:20px}.iwc-subtitle .intro .lede br{display:none}}

.iwc-subtitle .structural-actions{border-top:1px solid var(--line);margin-top:20px;padding-top:16px}.iwc-subtitle .structural-actions>span{font-size:12px;color:var(--muted);margin-right:4px}.iwc-subtitle .split-preview{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--pale);padding:12px;border-radius:7px;font-size:13px}.iwc-subtitle #operation-error{color:#9b3025;font-size:13px}.iwc-subtitle #operation-description{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px}.iwc-subtitle #split-at, .iwc-subtitle #split-position{width:100%}

.iwc-subtitle .cue-help{padding:0 20px;margin:0 0 14px}.iwc-subtitle .selection-tools{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:0 20px 16px}.iwc-subtitle .selection-tools span{width:100%;font-size:12px;color:var(--muted)}.iwc-subtitle .selection-tools button{font-size:11px;padding:8px 10px}.iwc-subtitle .cue-row{display:flex;align-items:stretch;border-bottom:1px solid var(--line)}.iwc-subtitle .cue-row .cue{min-width:0;flex:1;border-bottom:0;padding-left:10px}.iwc-subtitle .cue-check{display:flex;align-items:center;justify-content:center;flex:0 0 44px;min-height:44px;margin:0;cursor:pointer}.iwc-subtitle .cue-check input{width:20px;height:20px;min-height:20px;margin:0;accent-color:var(--green)}

.iwc-subtitle .reading-checks{border-top:1px solid var(--line);margin-top:20px;padding-top:20px}.iwc-subtitle .reading-checks summary{font-size:17px;font-weight:700;cursor:pointer;min-height:44px;padding:10px 0}.iwc-subtitle .reading-fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:16px}.iwc-subtitle .reading-fields input{width:100%}.iwc-subtitle #reading-summary{font-size:14px;color:var(--muted)}.iwc-subtitle #reading-error{color:#9b3025;font-size:13px}.iwc-subtitle #reading-notices li{margin-bottom:12px}.iwc-subtitle #reading-notices button{margin-left:10px;font-size:11px;padding:8px 12px}@media(max-width:650px){.iwc-subtitle .reading-fields{grid-template-columns:1fr}.iwc-subtitle .reading-fields label{margin-top:4px}}

.iwc-subtitle .reading-checks>.small{max-width:85ch}

.iwc-subtitle .source-toolbar{margin:12px 0}.iwc-subtitle .source-editor{border:1px solid #a7bdb0;border-radius:8px;overflow:hidden;min-height:120px;background:#fff}.iwc-subtitle .source-editor:empty{display:none}.iwc-subtitle #source-help{max-width:85ch}.iwc-subtitle .source-editor .cm-search{display:flex;gap:8px;flex-wrap:wrap;align-items:center;padding:12px}.iwc-subtitle .source-editor .cm-search label{margin:0;font-size:12px}.iwc-subtitle .source-editor .cm-search input[type=checkbox]{min-height:18px;width:18px;height:18px}.iwc-subtitle .source-editor .cm-search button{font-size:12px}.iwc-subtitle .source-editor .cm-gotoLine{padding:12px}.iwc-subtitle .source-editor .cm-panel input{max-width:100%}@media(max-width:650px){.iwc-subtitle .source-toolbar button{font-size:12px;padding:8px 10px}.iwc-subtitle .source-editor .cm-search .cm-textfield{max-width:100%;min-width:0;width:160px}}

.iwc-subtitle .iwc-source-search .iwc-search-help, .iwc-subtitle .iwc-source-search .iwc-search-status{flex:1 0 100%;font-size:12px;margin:0}.iwc-subtitle .iwc-source-search .iwc-search-status:empty{display:none}.iwc-subtitle .source-editor .iwc-source-search label{display:flex;align-items:center;gap:8px;min-height:44px}.iwc-subtitle .source-editor .iwc-source-search button, .iwc-subtitle .source-editor .iwc-source-search .cm-textfield{min-height:44px}.iwc-subtitle .iwc-source-search button[hidden]{display:none}

.iwc-subtitle .source-editor .iwc-source-search{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;gap:12px}.iwc-subtitle .source-editor .iwc-source-search .iwc-search-row{display:flex;flex:1 0 100%;flex-wrap:wrap;align-items:center;gap:8px}.iwc-subtitle .source-editor .iwc-source-search label.iwc-search-field{display:grid;gap:6px;flex:1 0 100%;font-size:12px;max-width:520px}.iwc-subtitle .source-editor .iwc-source-search .iwc-search-field .cm-textfield{width:100%;max-width:100%}.iwc-subtitle .source-editor .iwc-source-search .iwc-search-row label{margin-right:16px}.iwc-subtitle .source-editor .iwc-source-search .iwc-search-help{line-height:1.5;color:var(--muted)}

/* Workbench form boundaries and modal review accessibility. */
.iwc-subtitle{--control-border:#718a7c}.iwc-subtitle input, .iwc-subtitle select, .iwc-subtitle textarea, .iwc-subtitle .source-editor{border-color:var(--control-border)}.iwc-subtitle .form-error{font-size:14px;line-height:1.6;color:#9b3025;margin:0 0 16px}.iwc-subtitle .form-error:empty{display:none}.iwc-subtitle .form-error:focus{outline:3px solid #25835d;outline-offset:4px}.iwc-subtitle input[aria-invalid=true], .iwc-subtitle textarea[aria-invalid=true]{border-color:#9b3025;border-width:2px;scroll-margin-block:24px}
.iwc-subtitle dialog{padding:0;max-height:90vh;max-height:90dvh;overflow:hidden}.iwc-subtitle dialog .dialog-shell{display:flex;flex-direction:column;max-height:calc(90vh - 2px);max-height:calc(90dvh - 2px);margin:0}.iwc-subtitle dialog .dialog-head{flex:0 0 auto;padding:20px 28px;margin:0;border-bottom:1px solid var(--line);background:#fff}.iwc-subtitle dialog .dialog-head h2{min-width:0;overflow-wrap:anywhere}.iwc-subtitle dialog .dialog-scroll{min-height:0;overflow:auto;overscroll-behavior:contain;padding:20px 28px 28px;scroll-padding-block:20px}.iwc-subtitle dialog .dialog-scroll :focus{scroll-margin-block:20px}@media(max-width:650px){.iwc-subtitle dialog .dialog-head{padding:16px 20px}.iwc-subtitle dialog .dialog-scroll{padding:16px 20px 20px}}
.iwc-subtitle .source-editor .cm-editor .cm-textfield{border-color:var(--control-border)}

.iwc-subtitle .cue-preview-note{display:block;margin-top:10px;font:12px/1.5 system-ui,-apple-system,sans-serif;color:var(--muted)}

/* Keep long CodeMirror lines inside their editor, including grid min-content sizing. */
.iwc-subtitle .editor-stack{min-width:0;grid-template-columns:minmax(0,1fr)}.iwc-subtitle .editor-stack>.panel{min-width:0}.iwc-subtitle .source-editor{min-width:0;max-width:100%}