/* Reference details. Panel internals live here; viewer.css owns the media stage
   and mobile-sheet.css owns the draggable shell. */
.vd-rail {
  --vd-inset:24px;
  --vd-control:36px;
  display:flex;
  flex-direction:column;
  height:100%;
  min-width:0;
  min-height:0;
  overflow:hidden;
  background:var(--surface,#fff);
  color:var(--ink,#1f1f1f);
  font-size:14px;
  line-height:1.5;
}
.vd-rail :is(h2,h3,p,dl,dd,form){margin:0}
.vd-rail h3{font:500 14px/1.5 var(--sans);color:var(--ink)}
.vd-rail button,.vd-rail summary,.vd-rail select {
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:var(--vd-control);padding:6px 12px;border:0;border-radius:999px;
  background:transparent;color:var(--ink2);font-size:14px;line-height:1.3;
  cursor:pointer;text-decoration:none;transition:background-color 120ms,color 120ms;
}
.vd-rail button:disabled{cursor:default;opacity:.45}
.vd-rail button:hover:not(:disabled),.vd-rail summary:hover{background:var(--fill);color:var(--ink)}
.vd-rail button:active:not(:disabled){background:var(--fill2)}
.vd-rail :is(button,a,summary,select):focus-visible{outline:2px solid var(--blue,#1000ff);outline-offset:2px}
.vd-rail svg{width:16px;height:16px;flex:none}
.vd-rail a{color:inherit;text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:3px;overflow-wrap:anywhere}
.vd-rail a:hover{text-decoration-color:currentColor}

/* One action row: utilities, then the paired copy action and save. */
.vd-actions{display:flex;align-items:center;gap:4px;flex:none;padding:20px var(--vd-inset) 28px}
.vd-actions button{flex:none;color:var(--ink);white-space:nowrap}
.vd-actions .vd-icon-action{width:var(--vd-control);padding:0}
.vd-actions .vd-copy-split{display:flex;flex:none;margin-inline-start:auto;border-radius:999px;background:var(--fill);overflow:hidden;isolation:isolate}
.vd-copy-split:has(:focus-visible){outline:2px solid var(--blue,#1000ff);outline-offset:2px}
.vd-copy-split [data-copy]{padding-inline:12px 8px;border-radius:999px 0 0 999px}
.vd-copy-split [data-copy-options]{width:32px;padding:0;border-radius:0 999px 999px 0}
.vd-copy-split button:focus-visible{outline:none;background:var(--fill2)}
.vd-actions [data-save]{margin-inline-start:4px;padding-inline:12px;gap:6px;background:var(--fill);color:var(--ink)}
.vd-actions button[data-save]:hover:not(:disabled){background:var(--fill2);color:var(--ink)}
.vd-actions [data-save].vd-primary{background:var(--blue,#1000ff);color:#fff}
.vd-actions button[data-save].vd-primary:hover:not(:disabled){background:#2100dc;color:#fff}
.vd-actions button[data-save].vd-primary:active:not(:disabled){background:#1900b3}

/* A single scrolling region keeps the title, metadata and conversation together. */
.vd-rail-scroll{flex:1 1 0;min-height:0;overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable;padding:0 var(--vd-inset) 24px;scroll-padding-block:16px}
.vd-identity{display:flex;flex-direction:column;gap:12px;min-width:0}
.vd-title-row{display:flex;align-items:flex-start;gap:8px}
.vd-title-row h2{flex:1;min-width:0;font:26px/1.18 var(--serif,Georgia,serif);letter-spacing:-.02em;overflow-wrap:anywhere;text-wrap:pretty}
.vd-title-row button{flex:none;min-height:28px;padding:4px 8px}
.vd-provenance{display:flex;flex-direction:column;align-items:stretch;gap:8px;color:var(--ink3);font-size:13px;line-height:1.4}
.vd-rail .vd-original-source{display:flex;align-items:center;gap:12px;min-height:56px;padding:10px 12px;border-radius:10px;background:var(--fill);color:var(--ink);text-decoration:none}
.vd-rail .vd-original-source:hover{background:var(--fill2)}
.vd-original-source>span{flex:1;min-width:0;overflow-wrap:anywhere}
.vd-original-source strong{display:block;font-size:14px;font-weight:500}
.vd-original-source small{display:block;margin-top:2px;font-size:12px;color:var(--ink3)}
.vd-original-source svg{width:16px;height:16px}
.vd-saved-by,.vd-extra-byline{display:flex;align-items:center;flex-wrap:wrap;gap:6px;min-width:0}
.vd-rail .vd-person-link{justify-content:flex-start;gap:6px;padding:4px;min-height:36px;font-size:inherit;text-align:start;max-width:100%}
.vd-person-link span:last-child{min-width:0;overflow-wrap:anywhere}
.vd-avatar{position:relative;display:inline-grid;place-items:center;flex:none;width:32px;height:32px;border-radius:50%;overflow:hidden;background:var(--fill2);color:var(--ink2);font-size:11px;font-weight:500;line-height:1}
.vd-avatar>img{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:cover}
.vd-avatar>img[hidden]{display:none}
.vd-person-link .vd-avatar,.vd-reply-person .vd-avatar{width:20px;height:20px;font-size:9px}
.vd-caption,.vd-description,.vd-note{color:var(--ink2);white-space:pre-wrap;overflow-wrap:anywhere}
.vd-media-description{color:var(--ink2);white-space:pre-wrap;overflow-wrap:anywhere}
.vd-media-description small{display:block;margin-block-end:4px;font-size:12px;color:var(--ink3)}
.vd-extra-details{min-width:0}
.vd-rail .vd-extra-details>summary{display:flex;justify-content:flex-start;gap:8px;width:calc(100% + 16px);min-height:44px;margin-inline:-8px;padding:8px;border-radius:10px;list-style:none;text-align:start}
.vd-extra-details>summary::-webkit-details-marker{display:none}
.vd-extra-details>summary>span:first-child{flex:1;min-width:0}
.vd-extra-details>summary>svg{width:14px;height:14px;transition:transform 120ms}
.vd-extra-details[open]>summary>svg{transform:rotate(180deg)}
.vd-details-cues{display:flex;align-items:center;gap:8px;flex:none;font-size:12px;color:var(--ink3)}
.vd-palette-preview{display:flex;padding-inline-start:4px}
.vd-palette-preview i{width:16px;height:16px;margin-inline-start:-4px;border:2px solid var(--surface);border-radius:50%;background:var(--mv-color);box-shadow:0 0 0 1px var(--line)}
.vd-metadata{display:flex;flex-direction:column;gap:16px;padding-block:12px 8px}
.vd-tags{display:flex;flex-wrap:wrap;gap:4px}
.vd-rail .vd-tags button{background:var(--fill);font-size:13px;padding-inline:12px}
.vd-section-heading{display:flex;align-items:center;justify-content:space-between;gap:8px}
.vd-section-heading button{padding-inline:8px}
.vd-palette-tools{display:flex;align-items:center;gap:4px;flex:none}
.vd-palette-format{position:relative;display:flex}
.vd-palette-format>svg{position:absolute;right:12px;top:50%;transform:translateY(-50%);pointer-events:none;color:var(--ink3)}
.vd-rail .vd-palette-tools select{width:96px;min-height:32px;padding:4px 32px 4px 8px;border-radius:8px;background-color:transparent;font-size:13px}
.vd-rail .vd-palette-tools select:hover{background-color:var(--fill);color:var(--ink)}
.vd-rail .vd-palette-tools button{width:32px;min-height:32px;padding:0;border-radius:8px}
.vd-palette{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.vd-rail .vd-color-copy{flex:none;width:44px;height:44px;min-height:44px;padding:0;border:1px solid var(--line);border-radius:8px;background:var(--mv-color);forced-color-adjust:none}
.vd-rail .vd-color-copy:hover{background:var(--mv-color);outline:2px solid var(--ink3);outline-offset:2px}
.vd-memberships h3{margin-bottom:8px}
.vd-memberships>div{display:flex;flex-direction:column;gap:4px}
.vd-rail .vd-collection{display:flex;justify-content:flex-start;gap:12px;width:calc(100% + 16px);margin-inline:-8px;padding:8px;border-radius:10px;text-align:start}
.vd-collection-cover{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(2,minmax(0,1fr));gap:2px;flex:none;width:48px;height:48px;border-radius:6px;overflow:hidden}
.vd-collection-cover:has(>span:only-child){grid-template-columns:1fr;grid-template-rows:1fr}
.vd-collection-cover:has(>span:nth-child(2):last-child){grid-template-rows:1fr}
.vd-collection-cover>span{display:grid;position:relative;place-items:center;min-width:0;min-height:0;overflow:hidden;background:var(--fill)}
.vd-collection-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.vd-collection-cover img[hidden]{display:none}
.vd-collection-cover svg{width:14px;height:14px}
.vd-collection-label{flex:1;min-width:0}
.vd-collection-label strong{display:block;overflow-wrap:anywhere;font-size:14px;font-weight:500;color:var(--ink)}
.vd-collection-label small{display:block;margin-top:4px;font-size:12px;color:var(--ink3)}
.vd-collection>svg{color:var(--ink3)}

/* Conversation rhythm is shared by empty, selected, editing and reply states. */
.vd-conversation{display:flex;flex-direction:column;gap:24px;margin-top:24px;padding-top:24px;border-top:1px solid var(--line)}
.vd-section>.vd-note{margin-top:8px}
.vd-conversation-head{display:flex;align-items:baseline;flex-wrap:wrap;column-gap:8px;row-gap:4px}
.vd-conversation-head h3{font-size:14px}
.vd-conversation-head h3>span{margin-inline-start:2px;font-weight:400;color:var(--ink3)}
.vd-conversation-scope{min-width:0;font-size:13px;color:var(--ink3);overflow-wrap:anywhere}
.vd-comments{display:flex;flex-direction:column;gap:16px;margin-top:16px}
.vd-comment{min-width:0;scroll-margin-block:16px}
.vd-comment-main{display:flex;align-items:flex-start;gap:12px;margin-inline:-8px;padding:8px;border-radius:12px}
.vd-comment.is-selected>.vd-comment-main{background:var(--fill)}
.vd-comment-content{flex:1;min-width:0}
.vd-comment-content>header{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;min-height:32px;margin-bottom:8px}
.vd-comment-byline{display:flex;flex-wrap:wrap;align-items:baseline;column-gap:8px;row-gap:0;min-width:0;line-height:1.4;padding-top:3px}
.vd-comment-byline strong{font-size:14px;font-weight:500;overflow-wrap:anywhere}
.vd-comment-byline time{font-size:12px;color:var(--ink3);white-space:nowrap}
.vd-rail .vd-target-link{flex:none;max-width:55%;gap:4px;min-height:28px;padding:4px 8px;background:var(--fill);font-size:12px;text-align:start}
.vd-target-link svg{width:14px;height:14px}
.vd-target-link span{min-width:0;overflow-wrap:anywhere}
.vd-comment-content>p{font-size:14px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}
.vd-comment-actions{display:flex;flex-wrap:wrap;gap:0;margin-top:4px;margin-inline-start:-8px}
.vd-rail .vd-comment-actions button{min-width:32px;min-height:32px;padding:4px 8px;gap:4px;font-size:12px}
.vd-comment-actions [aria-pressed=true] svg{fill:currentColor}
.vd-rail .vd-comment-actions [aria-pressed=true]{color:var(--blue,#1000ff)}
.vd-comment-deleted{color:var(--ink3);font-style:italic}
.vd-replies{display:flex;flex-direction:column;gap:12px;margin-top:12px;margin-inline-start:16px;padding-inline-start:12px;border-inline-start:1px solid var(--line)}
.vd-replies .vd-replies{margin-inline-start:0}
.vd-empty-label,.vd-empty-copy{padding-block:16px;color:var(--ink3);font-size:14px}
.vd-confirm{display:flex;align-items:center;flex-wrap:wrap;gap:4px;margin-top:8px;padding:8px;border-radius:8px;background:var(--fill);font-size:13px}
.vd-confirm>span{flex:1 1 100%}
.vd-inline-mention{border-radius:4px;color:var(--blue,#1000ff)}

/* Compact composer grows with the draft, anchored outside the scrolling region. */
.vd-compose-dock{flex:none;padding:12px var(--vd-inset) 20px;border-top:1px solid var(--line);background:var(--surface);z-index:2}
.vd-rail .vd-composer{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:0 4px;padding:6px;border:1px solid var(--line);border-radius:16px;background:var(--fill)}
.vd-composer:focus-within{border-color:var(--blue,#1000ff);box-shadow:0 0 0 1px var(--blue,#1000ff)}
.vd-rail textarea,.vd-rail input{width:100%;min-width:0;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);font-size:14px;line-height:1.5}
.vd-rail textarea{resize:vertical}
.vd-rail .vd-composer textarea{align-self:center;display:block;height:44px;min-height:44px;max-height:128px;padding:11px 8px;border:0;border-radius:0;outline:none;background:transparent;resize:none;font-size:14px;line-height:22px;box-shadow:none}
.vd-composer textarea::placeholder{color:var(--ink3);opacity:1}
.vd-composer-actions{display:flex;align-items:flex-end;gap:0;align-self:end}
.vd-rail .vd-composer-actions button{width:36px;min-height:44px;padding:0}
.vd-rail .vd-composer-actions .vd-mention-button{font-size:20px}
.vd-rail .vd-composer-actions .vd-send{align-self:center;flex:none;width:36px;min-width:36px;min-height:36px;height:36px;aspect-ratio:1;border-radius:50%;background:var(--ink);color:var(--surface)}
.vd-rail .vd-send:hover:not(:disabled){background:var(--ink2);color:var(--surface)}
.vd-rail .vd-send:disabled{background:var(--fill2);color:var(--ink3);opacity:1}
.vd-replying,.vd-composer-target{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:8px;margin:0 4px 4px;padding:0 0 4px;border-bottom:1px solid var(--line);font-size:12px;color:var(--ink2)}
.vd-reply-person{display:flex;align-items:center;flex-wrap:wrap;gap:4px;min-width:0}
.vd-reply-person>span:last-child{overflow-wrap:anywhere}
.vd-rail .vd-replying>button,.vd-rail .vd-composer-target>button{padding-inline:8px;font-size:12px}
.vd-mentions{position:absolute;inset:auto -1px calc(100% + 8px);display:flex;flex-direction:column;max-height:240px;overflow:auto;padding:4px;border:1px solid var(--line);border-radius:12px;background:var(--surface);box-shadow:0 4px 16px #00000014;z-index:5}
.vd-rail .vd-mentions>button{justify-content:flex-start;width:100%;min-height:44px;padding:8px;border-radius:8px;text-align:start}
.vd-mentions small{margin-inline-start:auto;min-width:0;color:var(--ink3);overflow-wrap:anywhere}
.vd-edit-form{display:flex;flex-direction:column;gap:16px}
.vd-edit-form label{display:flex;flex-direction:column;gap:8px;font-size:13px}
.vd-field-help{color:var(--ink3);font-size:12px}
.vd-inline-edit{margin-top:8px}
.vd-form-actions{display:flex;justify-content:flex-end;gap:4px;margin-top:8px}
.vd-form-actions .vd-primary{background:var(--ink);color:var(--surface)}
.vd-form-actions .vd-primary:hover{background:var(--ink2);color:var(--surface)}

@media(max-width:760px){
  .vd-rail{--vd-inset:16px;--vd-control:44px;flex:0 0 auto;height:calc(var(--mv-sheet-height,200px) - 44px)}
  .vd-actions{padding-block:0 16px}
  .vd-copy-split [data-copy-options]{width:44px}
  .vd-rail-scroll{padding-bottom:24px}
  .vd-provenance{column-gap:12px}
  .vd-original-source,.vd-rail .vd-person-link{min-height:44px}
  .vd-compose-dock{padding-block:12px max(12px,env(safe-area-inset-bottom))}
  .vd-rail textarea,.vd-rail input{font-size:16px}
  .vd-rail .vd-composer textarea{font-size:16px}
  .vd-rail .vd-composer-actions button{width:44px;min-height:44px}
  .vd-rail .vd-composer-actions .vd-send{width:44px;min-width:44px;min-height:44px;height:44px}
  .vd-rail .vd-comment-actions button{min-width:44px;min-height:44px;font-size:13px}
  .vd-rail .vd-palette-tools select{width:104px;min-height:44px;font-size:16px}
  .vd-rail .vd-palette-tools button{width:44px;min-height:44px}
  .vd-rail .vd-target-link{min-height:32px}
  .vd-comment-content>p{font-size:15px}
  .mv-details[data-sheet-state=peek] .vd-compose-dock,
  .mv-details[data-sheet-state=peek] .vd-rail-scroll>:not(.vd-identity),
  .mv-details[data-sheet-state=peek] .vd-identity>:not(.vd-title-row){display:none}
  .mv-details[data-sheet-state=peek] .vd-rail-scroll{overflow:hidden;padding-bottom:16px}
  .mv-details[data-sheet-state=peek] .vd-title-row h2{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}
}
@media(max-width:360px){
  .vd-actions{gap:0}
  .vd-actions [data-copy]{padding-inline:10px 4px;gap:6px;font-size:13px}
  .vd-actions [data-copy]>svg,.vd-actions [data-save]>svg{display:none}
  .vd-actions [data-save]{padding-inline:10px;gap:4px;font-size:13px}
  .vd-details-cues{gap:6px}
  .vd-details-cues>span:last-child{display:none}
  .vd-comment-content>header{flex-wrap:wrap;gap:4px}
  .vd-comment-byline{flex:1 1 100%}
  .vd-replies{margin-inline-start:8px;padding-inline-start:8px}
}
@media(prefers-reduced-motion:reduce){.vd-rail button,.vd-rail summary,.vd-extra-details>summary>svg{transition:none}}