/* ==========================================================================
   vt99-components.css — variant99 shared component library (Phase 4).
   Companion macros: app/templates/partials/vt99.html.
   Primer reference: todo/new_design/primer/design-system-variant99.md §7, §10,
   §11, §15 (toolbar toggle), §18. All classes `vt-` prefixed; all colors,
   radii and fonts come from --vt-* tokens (vt99-tokens.css).
   ========================================================================== */


/* --------------------------------------------------------------------------
   §11 Terminal head (`term_head` macro) — LED dots + mono filename + meta.
   -------------------------------------------------------------------------- */
.vt-term-head{display:flex;align-items:center;gap:9px;padding:13px 20px;
  border-bottom:1px solid var(--vt-line-soft);font-family:var(--vt-mono);font-size:.68rem;
  letter-spacing:.18em;text-transform:uppercase;color:var(--vt-pip)}
.vt-term-head i{width:8px;height:8px;border-radius:50%;background:var(--vt-text-3);flex:none}
.vt-term-head i.on{background:var(--vt-pip);box-shadow:0 0 8px var(--vt-pip)}
.vt-term-head .vt-th-side{margin-left:auto}


/* --------------------------------------------------------------------------
   §10 Section head (`section_head` macro) — h2 with yellow `<i>// …</i>`
   suffix, optional description, optional right-side element.
   -------------------------------------------------------------------------- */
.vt-sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;
  margin-bottom:28px;flex-wrap:wrap}
.vt-sec-head h2{font-family:var(--vt-disp);font-size:clamp(1.5rem,2.8vw,2.1rem);font-weight:700;
  letter-spacing:-.015em}
.vt-sec-head h2 i{font-style:normal;color:var(--vt-yellow)}
.vt-sec-head p{color:var(--vt-text-2);font-size:.93rem;margin-top:6px;max-width:56ch}
.vt-sec-side{color:var(--vt-text-3);font-size:.78rem;font-family:var(--vt-mono);letter-spacing:.1em}


/* --------------------------------------------------------------------------
   §7 Status badge (`status_badge` macro) — pulsing LED-dot pill.
   -------------------------------------------------------------------------- */
.vt-status-badge{display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  background:rgba(74,222,128,.09);border:1px solid rgba(74,222,128,.35);
  color:var(--vt-green);font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase}
.vt-status-badge::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--vt-green);
  box-shadow:0 0 12px var(--vt-green);animation:vt-pulse 2s infinite}
@keyframes vt-pulse{0%,100%{box-shadow:0 0 0 0 rgba(74,222,128,.5)}55%{box-shadow:0 0 0 7px rgba(74,222,128,0)}}

/* tone variants */
.vt-status-badge--red{background:rgba(248,113,113,.09);border-color:rgba(248,113,113,.35);color:var(--vt-red)}
.vt-status-badge--red::before{background:var(--vt-red);box-shadow:0 0 12px var(--vt-red)}
@keyframes vt-pulse-red{0%,100%{box-shadow:0 0 0 0 rgba(248,113,113,.5)}55%{box-shadow:0 0 0 7px rgba(248,113,113,0)}}
.vt-status-badge--red::before{animation-name:vt-pulse-red}
.vt-status-badge--yellow{background:var(--vt-yellow-glow);border-color:rgba(255,210,51,.35);color:var(--vt-yellow)}
.vt-status-badge--yellow::before{background:var(--vt-yellow);box-shadow:0 0 12px var(--vt-yellow)}
@keyframes vt-pulse-yellow{0%,100%{box-shadow:0 0 0 0 rgba(255,210,51,.5)}55%{box-shadow:0 0 0 7px rgba(255,210,51,0)}}
.vt-status-badge--yellow::before{animation-name:vt-pulse-yellow}

@media(prefers-reduced-motion:reduce){
  .vt-status-badge::before{animation:none}
}


/* --------------------------------------------------------------------------
   §7 Chip (`chip` macro) — stat summary pill.
   -------------------------------------------------------------------------- */
.vt-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:rgba(147,164,255,.06);border:1px solid var(--vt-line-soft);font-family:var(--vt-mono);
  font-size:.76rem;color:var(--vt-text-2);cursor:default;
  transition:transform .25s cubic-bezier(.34,1.56,.64,1),border-color .25s,background .25s}
.vt-chip:hover{transform:translateY(-3px) scale(1.03);border-color:rgba(255,210,51,.4);
  background:var(--vt-yellow-glow)}
.vt-chip b{color:var(--vt-yellow);font-weight:700}


/* --------------------------------------------------------------------------
   §15 Toolbar toggle (`toggle` macro) — pill switch around a real checkbox.
   The input stays keyboard-focusable while visually hidden; the pill shows
   a focus ring via :has(input:focus-visible).
   -------------------------------------------------------------------------- */
.vt-toggle{position:relative;display:inline-flex;align-items:center;gap:9px;cursor:pointer;
  user-select:none;min-height:42px;padding:0 16px;border-radius:999px;border:1px solid var(--vt-line);
  color:var(--vt-text-2);font-size:.8rem;font-weight:650;
  transition:border-color .25s,color .25s,background .25s}
.vt-toggle input{position:absolute;opacity:0;pointer-events:none}
.vt-toggle i{width:32px;height:18px;border-radius:99px;background:rgba(147,164,255,.14);
  position:relative;transition:background .25s;flex:none}
.vt-toggle i::after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;
  border-radius:50%;background:#fff;transition:transform .25s cubic-bezier(.34,1.56,.64,1)}
.vt-toggle:has(input:checked){border-color:rgba(255,210,51,.5);color:var(--vt-text);
  background:var(--vt-yellow-glow)}
.vt-toggle:has(input:checked) i{background:var(--vt-yellow)}
.vt-toggle:has(input:checked) i::after{transform:translateX(14px)}
.vt-toggle:has(input:focus-visible){outline:2px solid var(--vt-blue-2);outline-offset:2px}
@media(hover:hover){
  .vt-toggle:hover{border-color:rgba(255,210,51,.35)}
}


/* --------------------------------------------------------------------------
   §18 CTA banner (`cta_banner` macro) — conversion banner with rotating
   vault-door sprite icon; door cranks open on hover, static under
   prefers-reduced-motion; button full-width below the copy on mobile.
   -------------------------------------------------------------------------- */
.vt-cta{margin-top:76px;border-radius:calc(var(--vt-r-lg) + 4px);overflow:hidden;position:relative;
  border:1px solid rgba(255,210,51,.3);
  background:linear-gradient(120deg,rgba(59,110,246,.14),rgba(12,15,26,.5) 55%,rgba(255,210,51,.08));
  padding:clamp(28px,5vw,50px);display:flex;align-items:center;gap:clamp(22px,4vw,46px);flex-wrap:wrap}
.vt-cta-door{width:88px;height:88px;flex:none;color:var(--vt-yellow);opacity:.9;
  filter:drop-shadow(0 0 18px var(--vt-yellow-glow));
  transition:transform 1.1s cubic-bezier(.22,1,.36,1)}
.vt-cta:hover .vt-cta-door{transform:rotate(120deg)}
.vt-cta-door--copy{transition:transform .4s cubic-bezier(.22,1,.36,1)}
.vt-cta:hover .vt-cta-door--copy{transform:scale(1.08)}
.vt-cta-copy h2{font-family:var(--vt-disp);font-size:clamp(1.5rem,3vw,2.1rem);font-weight:700;
  letter-spacing:-.015em;margin-bottom:8px}
.vt-cta-copy h2 em{font-style:normal;color:var(--vt-yellow)}
.vt-cta-copy p{color:var(--vt-text-2);max-width:48ch;font-size:.94rem}
.vt-cta-btn{margin-left:auto}

@media(max-width:768px){
  .vt-cta-btn{margin-left:0;width:100%;justify-content:center}
}

@media(prefers-reduced-motion:reduce){
  .vt-cta-door{transition:none}
  .vt-cta:hover .vt-cta-door{transform:none}
  .vt-cta-door--copy{transition:none}
  .vt-cta:hover .vt-cta-door--copy{transform:none}
}


/* --------------------------------------------------------------------------
    §12 Stats grid (`stats_grid` / `stat_card` macros) — responsive card grid
    with cursor-following yellow spotlight (--mx/--my set from JS pointermove)
    and count-up numbers (data-vt-countup, animated by vt99-blocks.js).
    -------------------------------------------------------------------------- */
.vt-stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.vt-stat-card{position:relative;padding:22px;border-radius:var(--vt-r-md);overflow:hidden;
  background:var(--vt-panel);border:1px solid var(--vt-line-soft);
  transition:transform .3s cubic-bezier(.22,1,.36,1),border-color .3s,box-shadow .3s}

/* cursor spotlight glow — driven by --mx/--my custom properties set in JS */
.vt-stat-card::before{content:"";position:absolute;inset:0;border-radius:inherit;opacity:0;
  transition:opacity .3s;pointer-events:none;
  background:radial-gradient(220px 220px at var(--mx,50%) var(--my,50%),rgba(255,210,51,.1),transparent 70%)}
.vt-stat-card:hover::before{opacity:1}
@media(hover:hover){
  .vt-stat-card:hover{transform:translateY(-5px);border-color:rgba(255,210,51,.3);
    box-shadow:0 20px 44px -18px rgba(0,0,0,.6)}
}

.vt-stat-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  margin-bottom:16px;background:var(--vt-blue-glow);color:var(--vt-blue-2);
  border:1px solid rgba(109,155,255,.2);
  transition:transform .35s cubic-bezier(.34,1.56,.64,1),background .3s,color .3s}
.vt-stat-icon svg{width:18px;height:18px}
@media(hover:hover){
  .vt-stat-card:hover .vt-stat-icon{transform:scale(1.12) rotate(-7deg);
    background:var(--vt-yellow-glow);color:var(--vt-yellow)}
}

.vt-stat-label{display:block;color:var(--vt-text-3);font-size:.7rem;font-weight:800;
  letter-spacing:.14em;text-transform:uppercase;margin-bottom:6px}
.vt-stat-value{font-family:var(--vt-mono);font-size:1.18rem;font-weight:700;
  font-variant-numeric:tabular-nums}
.vt-stat-value.hl{color:var(--vt-yellow)}   /* hero metrics highlighted yellow */
.vt-stat-note{display:block;color:var(--vt-text-3);font-size:.76rem;margin-top:5px}

@media(max-width:1200px){
  .vt-stats-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:768px){
  .vt-stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .vt-stats-grid{gap:8px}
}
@media(prefers-reduced-motion:reduce){
  .vt-stat-card,.vt-stat-icon,.vt-stat-card::before{transition:none}
  .vt-stat-card:hover{transform:none}
  .vt-stat-card:hover .vt-stat-icon{transform:none}
}


/* --------------------------------------------------------------------------
    §13 Activity chart (`chart_card` macro) — dependency-free div bar chart.
    Columns are built by vt99-blocks.js from the sibling JSON script tag;
    peak column turns yellow; tooltips ride on data-tip (::after) plus a
    title attribute fallback.
    -------------------------------------------------------------------------- */
.vt-chart-card{background:var(--vt-panel);border:1px solid var(--vt-line-soft);
  border-radius:var(--vt-r-lg);padding:0;position:relative;overflow:hidden}
.vt-chart-card::after{content:"";position:absolute;top:-60px;right:-60px;width:200px;height:200px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,210,51,.08),transparent 70%);
  pointer-events:none}                                   /* corner ambient glow */

.vt-chart-body{position:relative;padding:20px 26px 22px;z-index:1}
.vt-chart-wrap{display:flex;align-items:flex-end;gap:8px;height:180px}
.vt-chart-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;height:100%;
  justify-content:flex-end}
.vt-chart-bar{width:100%;max-width:48px;border-radius:8px 8px 3px 3px;position:relative;height:0;
  min-height:4px;background:linear-gradient(180deg,var(--vt-blue-2),rgba(59,110,246,.3));
  transition:height 1s cubic-bezier(.22,1,.36,1),filter .2s}
.vt-chart-col.vt-peak .vt-chart-bar{background:linear-gradient(180deg,var(--vt-yellow),rgba(255,210,51,.35))}
.vt-chart-col:hover .vt-chart-bar{filter:brightness(1.25) drop-shadow(0 0 14px rgba(59,110,246,.4))}

/* tooltip: content of data-tip, revealed on column hover/focus */
.vt-chart-bar::after{content:attr(data-tip);position:absolute;bottom:calc(100% + 9px);left:50%;
  transform:translateX(-50%) translateY(5px);background:var(--vt-panel-2);border:1px solid var(--vt-line);
  color:var(--vt-text);font-size:.7rem;font-family:var(--vt-mono);padding:6px 10px;border-radius:8px;
  white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:6}
.vt-chart-col:hover .vt-chart-bar::after{opacity:1;transform:translateX(-50%)}
.vt-chart-num{font-family:var(--vt-mono);font-size:.74rem;color:var(--vt-text-3)}
.vt-chart-scale{display:flex;justify-content:space-between;margin-top:12px;color:var(--vt-text-3);
  font-family:var(--vt-mono);font-size:.68rem}

@media(prefers-reduced-motion:reduce){
  .vt-chart-bar{transition:none}
  .vt-chart-bar::after{transition:opacity .2s}
}


/* --------------------------------------------------------------------------
    §14 Video proof card (`video_card` macro) — term-head → sandboxed 16:9
    iframe → meta strip with counter, platform tag and external link.
    -------------------------------------------------------------------------- */
.vt-video-card{border-radius:var(--vt-r-lg);overflow:hidden;border:1px solid var(--vt-line-soft);
  background:var(--vt-panel)}
.vt-proof-player{position:relative;aspect-ratio:16/9;background:#000}
.vt-proof-player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.vt-proof-meta{display:flex;align-items:center;gap:16px;padding:14px 22px;
  border-top:1px solid var(--vt-line-soft);flex-wrap:wrap}
.vt-proof-meta .pos{font-family:var(--vt-mono);color:var(--vt-text-3);font-size:.8rem}
.vt-proof-meta .plat{font-size:.72rem;font-weight:800;letter-spacing:.18em;color:var(--vt-yellow)}
.vt-proof-meta a{margin-left:auto;font-size:.85rem;color:var(--vt-text-2);transition:color .2s;
  display:inline-flex;gap:6px;align-items:center}
.vt-proof-meta a:hover{color:var(--vt-blue-2)}
.vt-proof-meta a svg{width:13px;height:13px}


/* --------------------------------------------------------------------------
    Mini progress bars (`[data-vt-progress]`, driven by vt99-blocks.js).
    Track + fill: the fill element carries data-vt-progress="<percent>" and
    grows to that width at 50% visibility (instant under reduced motion).
    Usage:
        <span class="vt-meter" aria-hidden="true">
          <i data-vt-progress="66"></i>
        </span>
    -------------------------------------------------------------------------- */
.vt-meter{display:inline-block;width:76px;height:4px;border-radius:99px;
  background:rgba(147,164,255,.12);overflow:hidden;flex:none;vertical-align:middle}
.vt-meter i[data-vt-progress]{display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--vt-blue),var(--vt-yellow));
  transition:width 1.2s cubic-bezier(.22,1,.36,1)}

@media(prefers-reduced-motion:reduce){
  .vt-meter i[data-vt-progress]{transition:none}
}


/* --------------------------------------------------------------------------
    §15 Subgoals table (`subgoals_table` macro) — CSS grid rows inside a
    terminal card. Desktop columns 32px 1.3fr 140px 1.1fr 112px; row state
    via data-completed; filters are .vt-toggle pills with data-vt-subgoal-
    filter hooks (JS: vt99-blocks.js); empty state shows when every row
    is hidden. Mobile ≤768px re-grids to 28px 1fr max-content.
    -------------------------------------------------------------------------- */
.vt-sg-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.vt-sg-body{padding:10px 16px 16px;position:relative;z-index:1}
.vt-sg-table{display:flex;flex-direction:column}
.vt-sg-row{display:grid;grid-template-columns:32px 1.3fr 140px 1.1fr 112px;gap:14px;
  align-items:center;padding:13px 16px;border-radius:var(--vt-r-md);position:relative;
  transition:background .2s,padding-left .3s cubic-bezier(.22,1,.36,1)}
.vt-sg-row::before{content:"";position:absolute;left:0;top:20%;bottom:20%;width:3px;
  border-radius:99px;background:var(--vt-yellow);opacity:0;transition:opacity .2s}
@media(hover:hover){
  .vt-sg-row:hover{background:var(--vt-panel-2);padding-left:22px}
  .vt-sg-row:hover::before{opacity:1}
}
.vt-sg-row + .vt-sg-row{border-top:1px solid var(--vt-line-soft)}
.vt-sg-row.is-hidden{display:none}

/* header row variant */
.vt-sg-head-row{padding:8px 16px;color:var(--vt-text-3);font-size:.66rem;font-weight:800;
  letter-spacing:.16em;text-transform:uppercase;border-bottom:1px solid var(--vt-line-soft)}
.vt-sg-head-row::before{display:none}
.vt-sg-head-row .vt-sg-time{text-align:right}

/* checkbox cell */
.vt-sg-check{width:25px;height:25px;border-radius:9px;display:grid;place-items:center;
  border:1.5px solid var(--vt-line);color:transparent;font-size:.76rem;
  transition:transform .3s cubic-bezier(.34,1.56,.64,1)}
@media(hover:hover){
  .vt-sg-row:hover .vt-sg-check{transform:scale(1.12)}
}
.vt-sg-row[data-completed="true"] .vt-sg-check{background:rgba(74,222,128,.1);
  border-color:rgba(74,222,128,.5);color:var(--vt-green)}
.vt-sg-row[data-completed="false"] .vt-sg-check{border-color:rgba(255,210,51,.5);
  color:var(--vt-yellow)}

/* name cell with animated underline link */
.vt-sg-name{font-weight:650;font-size:.93rem;line-height:1.35}
.vt-sg-name a{background-image:linear-gradient(var(--vt-blue-2),var(--vt-blue-2));
  background-size:0% 1.5px;background-repeat:no-repeat;background-position:0 100%;
  padding-bottom:2px;color:var(--vt-text);
  transition:background-size .35s,color .2s}
.vt-sg-name a:hover,.vt-sg-name a:focus-visible{color:var(--vt-blue-2);background-size:100% 1.5px}
.vt-sg-name a:focus-visible{outline:2px solid var(--vt-blue-2);outline-offset:2px;border-radius:4px}
.vt-sg-nolink{color:var(--vt-text)}

/* category chip */
.vt-sg-cat{justify-self:start;display:inline-flex;align-items:center;gap:7px;font-size:.63rem;
  font-weight:800;letter-spacing:.1em;text-transform:uppercase;padding:5px 11px;
  border-radius:999px;white-space:nowrap;background:var(--vt-blue-glow);color:var(--vt-blue-2);
  border:1px solid rgba(109,155,255,.2)}

/* detail cell: count + meter and/or acquisition text */
.vt-sg-detail{color:var(--vt-text-3);font-size:.82rem;display:flex;align-items:center;
  gap:10px;flex-wrap:wrap}
.vt-sg-count{font-family:var(--vt-mono);font-variant-numeric:tabular-nums;color:var(--vt-text-2)}
.vt-sg-detail .vt-meter{vertical-align:baseline}

/* time cell */
.vt-sg-time{font-family:var(--vt-mono);font-size:.82rem;color:var(--vt-text-2);text-align:right;
  font-variant-numeric:tabular-nums;transition:color .2s;white-space:nowrap}
@media(hover:hover){
  .vt-sg-row:hover .vt-sg-time{color:var(--vt-yellow)}
}
.vt-sg-row[data-completed="false"] .vt-sg-time{color:var(--vt-text-3)}

/* empty state — hidden by default; JS removes [hidden] when 0 rows visible */
.vt-sg-empty{display:none;color:var(--vt-text-3);padding:18px 16px;font-size:.88rem;margin:0}
.vt-sg-empty:not([hidden]){display:block}

/* mobile re-grid (§15): header row gone; name+time share row 1,
   category+detail span full width below; time never wraps */
@media(max-width:768px){
  .vt-sg-toolbar{gap:8px;margin-bottom:12px}
  .vt-toggle{min-height:44px}                       /* touch targets ≥44px */
  .vt-sg-body{padding:6px 0 12px}
  .vt-sg-head-row{display:none}
  .vt-sg-row{grid-template-columns:28px 1fr max-content;gap:10px;padding:11px 0;row-gap:3px}
  .vt-sg-row:hover{padding-left:0}
  .vt-sg-name{grid-column:2;grid-row:1;align-self:center}
  .vt-sg-time{grid-column:3;grid-row:1;align-self:center;min-width:max-content;font-size:.76rem}
  .vt-sg-cat,.vt-sg-detail{grid-column:2/4}
}
@media(max-width:480px){
  .vt-sg-row{padding:10px 0;gap:8px}
}
@media(prefers-reduced-motion:reduce){
  .vt-sg-row,.vt-sg-check,.vt-sg-time{transition:none}
}


/* --------------------------------------------------------------------------
    §17 Event log / timeline (`event_log` macro) — grid rows date | type |
    title | game-time. Type modifier class vt-log-<type> color-codes the
    type cell; the completion row gets a yellow gradient wash + left border.
    -------------------------------------------------------------------------- */
.vt-log-card .vt-log{padding-top:8px;padding-bottom:8px}
.vt-log{display:flex;flex-direction:column;font-size:.86rem}
.vt-log-row{display:grid;grid-template-columns:158px 96px 1fr 112px;gap:14px;
  align-items:baseline;padding:11px 18px;border-left:2px solid transparent;
  transition:background .18s,border-color .18s,padding-left .25s}
@media(hover:hover){
  .vt-log-row:hover{background:var(--vt-panel-2);border-left-color:var(--vt-yellow);
    padding-left:24px}
}
.vt-log-row + .vt-log-row{border-top:1px solid var(--vt-line-soft)}

.vt-log-date{color:var(--vt-text-3);font-family:var(--vt-mono);font-size:.73rem}
.vt-log-type{font-family:var(--vt-mono);font-size:.64rem;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--vt-text-3)}

/* type color coding (primer §17) */
.vt-log-create .vt-log-type{color:var(--vt-blue-2)}
.vt-log-start .vt-log-type{color:var(--vt-text-2)}
.vt-log-pause .vt-log-type,.vt-log-resume .vt-log-type{color:var(--vt-text-2)}
.vt-log-goal_change .vt-log-type{color:var(--vt-blue-2)}
.vt-log-subgoal_add .vt-log-type,.vt-log-subgoal_delete .vt-log-type{color:var(--vt-text-3)}
.vt-log-subgoal_complete .vt-log-type{color:var(--vt-green)}
.vt-log-complete .vt-log-type{color:var(--vt-yellow)}

.vt-log-title{color:var(--vt-text)}
.vt-log-title a{border-bottom:1px dashed var(--vt-text-3);color:inherit;
  transition:color .2s,border-color .2s}
.vt-log-title a:hover,.vt-log-title a:focus-visible{color:var(--vt-blue-2);
  border-color:var(--vt-blue-2)}

.vt-log-time{color:var(--vt-text-2);font-family:var(--vt-mono);font-size:.8rem;
  text-align:right;font-variant-numeric:tabular-nums}
@media(hover:hover){
  .vt-log-row:hover .vt-log-time{color:var(--vt-yellow)}
}

/* completion row highlight */
.vt-log-complete{background:linear-gradient(90deg,rgba(255,210,51,.07),transparent);
  border-left-color:var(--vt-yellow)}

/* mobile re-grid (§17): title+time top, type below, date hidden */
@media(max-width:768px){
  .vt-log-row{grid-template-columns:1fr auto;gap:10px;padding:10px 0}
  .vt-log-row:hover{padding-left:0}
  .vt-log-date{display:none}
  .vt-log-title{grid-column:1;grid-row:1}
  .vt-log-time{grid-column:2;grid-row:1;white-space:nowrap;font-size:.74rem}
  .vt-log-type{grid-column:1;grid-row:2;font-size:.58rem}
}
@media(max-width:480px){
  .vt-log-row{padding:9px 0;gap:8px}
}
@media(prefers-reduced-motion:reduce){
  .vt-log-row{transition:none}
}


/* --------------------------------------------------------------------------
    §16 History accordion (`history_accordion` macro) — native <details>
    disclosure; chevron rotates when open; items are bordered meta rows.
    -------------------------------------------------------------------------- */
.vt-history{border-top:1px solid var(--vt-line-soft)}
.vt-history summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;
  padding:17px 20px;font-weight:650;font-size:.92rem;user-select:none;color:var(--vt-text-2);
  transition:color .2s;min-height:44px;box-sizing:border-box}
.vt-history summary::-webkit-details-marker{display:none}
.vt-history summary:hover,.vt-history summary:focus-visible{color:var(--vt-text)}
.vt-history summary:focus-visible{outline:2px solid var(--vt-blue-2);outline-offset:-2px;
  border-radius:var(--vt-r-md)}
.vt-history summary small{color:var(--vt-text-3);font-family:var(--vt-mono);font-weight:400;
  font-size:.78rem}
.vt-hist-chev{margin-left:auto;display:inline-flex;color:var(--vt-text-3);
  transition:transform .3s}
.vt-history[open] .vt-hist-chev{transform:rotate(180deg)}
.vt-history-body{padding:0 20px 18px}
.vt-history-item{display:flex;gap:14px;align-items:baseline;flex-wrap:wrap;padding:13px 16px;
  border:1px solid var(--vt-line-soft);border-radius:var(--vt-r-md);background:var(--vt-panel-2);
  font-size:.88rem}
.vt-history-item + .vt-history-item{margin-top:8px}
.vt-history-item time{font-family:var(--vt-mono);color:var(--vt-text-3);font-size:.75rem}
.vt-history-item strong{font-weight:650}
.vt-history-item .tag{margin-left:auto;font-size:.64rem;font-weight:800;letter-spacing:.14em;
  text-transform:uppercase;color:var(--vt-yellow)}

@media(max-width:768px){
  .vt-history summary{padding:14px 0}
  .vt-history-body{padding:0 0 14px}
}
@media(prefers-reduced-motion:reduce){
  .vt-hist-chev{transition:none}
}

/* ==========================================================================
   §20 — Floating utilities: to-top + toast (Step 4.4)
   The to-top button keeps its legacy classes until Phase 5 wiring; these
   rules fully re-skin it once vt99-components.css is linked (later sheet
   wins the cascade at equal specificity).
   ========================================================================== */
.vt-to-top{position:fixed;right:22px;bottom:calc(22px + env(safe-area-inset-bottom));z-index:450;
  width:48px;height:48px;padding:0;border-radius:15px;
  background:var(--vt-panel-2);border:1px solid var(--vt-line);color:var(--vt-text-2);
  display:grid;place-items:center;
  opacity:0;pointer-events:none;transform:translateY(14px);
  transition:opacity .3s,transform .35s cubic-bezier(.34,1.56,.64,1),
             border-color .2s,color .2s,box-shadow .25s;
  box-shadow:0 12px 32px rgba(0,0,0,.5)}
.vt-to-top[hidden]{display:none}
.vt-to-top.show{opacity:1;pointer-events:auto;transform:none}      /* shown past 600px scroll */
.vt-to-top:hover{color:var(--vt-yellow);border-color:rgba(255,210,51,.4);transform:translateY(-3px)}
.vt-to-top:focus-visible{outline:2px solid var(--vt-blue-2);outline-offset:2px}

.vt-toast{position:fixed;left:50%;bottom:calc(30px + env(safe-area-inset-bottom));z-index:500;
  transform:translate(-50%,90px);max-width:min(92vw,480px);
  background:var(--vt-panel-2);border:1px solid rgba(255,210,51,.45);color:var(--vt-text);
  padding:13px 26px;border-radius:14px;font-family:var(--vt-sans);
  font-size:.87rem;font-weight:600;text-align:center;
  box-shadow:0 20px 50px rgba(0,0,0,.6);opacity:0;pointer-events:none;
  transition:transform .4s cubic-bezier(.22,1,.36,1),opacity .3s}
.vt-toast.show{transform:translate(-50%,0);opacity:1}

@media(max-width:768px){
  .vt-toast{display:flex;align-items:center;justify-content:center;
    min-height:44px;padding:12px 18px}
}
@media(prefers-reduced-motion:reduce){
  .vt-to-top,.vt-toast{transition:none}
}