body { margin:0; background:var(--paper-0); color:var(--ink-0); }
.tools-shell { width:min(calc(100% - 2rem),1180px); margin:auto; padding:var(--space-7) 0 var(--space-9); }
.tools-hero { max-width:850px; margin-block-end:var(--space-7); }
.tools-hero h1,.tool-heading h1 { margin:.55rem 0 .7rem; font-size:clamp(2.8rem,6vw,5.8rem); line-height:.96; letter-spacing:-.05em; }
.tools-hero p,.tool-heading p { max-width:48rem; margin:0; color:var(--ink-1); font-size:1.08rem; line-height:1.8; }
.tools-grid { display:grid; grid-template-columns:repeat(12,minmax(0,1fr)); gap:1px; border:1px solid var(--line); background:var(--line); }
.tool-card { grid-column:span 4; min-height:17rem; padding:var(--space-5); display:flex; flex-direction:column; background:var(--paper-1); }
.tool-card__meta { display:flex; align-items:start; justify-content:space-between; gap:var(--space-4); }
.tool-index { color:var(--editorial-accent); font-size:var(--text-xs); font-weight:900; }
.tool-card h2 { margin:auto 0 .6rem; font-size:clamp(1.35rem,2.4vw,2rem); }
.tool-card p { margin:0; color:var(--ink-2); line-height:1.65; }
.tool-card__open { margin-block-start:var(--space-4); padding-block-start:var(--space-3); border-block-start:1px solid var(--line); font-size:var(--text-sm); font-weight:900; }
.tool-icon { display:inline-grid; place-items:center; min-inline-size:2.8rem; block-size:2.8rem; padding-inline:.45rem; border:1px solid var(--ink-0); font-weight:900; }
.back-link { display:inline-block; margin-block-end:var(--space-5); color:var(--ink-2); font-weight:800; }
.tool-heading { display:grid; grid-template-columns:auto 1fr; gap:var(--space-5); align-items:start; max-width:920px; }
.tool-workspace { margin-block-start:var(--space-6); border-block:2px solid var(--ink-0); background:var(--paper-1); padding:clamp(1.2rem,4vw,2.2rem); }
.tool-controls { display:grid; gap:var(--space-4); }
.tool-controls label { display:grid; gap:.5rem; color:var(--ink-1); font-weight:750; }
.tool-controls input,.tool-controls textarea,.tool-controls select { box-sizing:border-box; width:100%; padding:.8rem; border:1px solid var(--line); border-radius:0; background:var(--paper-0); color:var(--ink-0); font:inherit; }
.tool-controls textarea { direction:ltr; text-align:left; font-family:ui-monospace,SFMono-Regular,Consolas,monospace; }
.tool-controls button { min-height:2.8rem; padding:.75rem 1rem; border:1px solid var(--ink-0); border-radius:0; background:var(--ink-0); color:var(--paper-1); font-weight:900; cursor:pointer; }
.action-row,.check-row { display:flex; gap:.65rem; flex-wrap:wrap; }
.check-row label { display:flex; align-items:center; gap:.4rem; }
.check-row input { width:auto; }
.privacy-note { margin:var(--space-5) 0 0; padding-block-start:var(--space-4); border-block-start:1px solid var(--line); color:var(--ink-2); font-size:var(--text-sm); }
.tool-error { min-height:1.5em; color:var(--editorial-accent); }
.timestamp-output { display:grid; gap:.5rem; padding:1rem; background:var(--paper-0); border:1px solid var(--line); direction:ltr; text-align:left; }
.text-stats { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:1px; margin-block-start:1rem; background:var(--line); border:1px solid var(--line); }
.text-stats>div { display:grid; gap:.2rem; padding:1rem; background:var(--paper-1); }
.text-stats strong { font-size:1.6rem; }
.text-stats span { color:var(--ink-2); font-size:var(--text-xs); }
@media(max-width:850px){.tool-card{grid-column:span 6}}
@media(max-width:640px){
 .tools-shell{width:min(calc(100% - 1.2rem),1180px);padding-top:var(--space-6)}
 .tool-card{grid-column:1/-1;min-height:13rem}
 .tool-heading{grid-template-columns:1fr}
 .tools-hero h1,.tool-heading h1{font-size:clamp(2.5rem,13vw,4.2rem)}
 .text-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* Visual System V2 — tools remain functional while sharing the publication language. */
html[data-theme="light"] body { background:var(--editorial-page-bg); }
.tools-shell {
  width:min(calc(100% - 2rem),var(--content-max));
  padding:2.5rem 0 4rem;
}
.tools-hero {
  margin-block-end:2.25rem;
}
.tools-hero h1,.tool-heading h1 {
  font-size:clamp(2.7rem,5vw,4.9rem);
  line-height:1;
}
.tools-grid {
  grid-template-columns:repeat(6,minmax(0,1fr));
  gap:1px;
  border:1px solid var(--line);
  background:var(--line);
}
.tool-card {
  grid-column:span 2;
  min-height:15rem;
}
.tool-card:nth-last-child(2):nth-child(3n+1),
.tool-card:last-child:nth-child(3n+2) {
  grid-column:span 3;
}
.tool-card:last-child:nth-child(3n+1) {
  grid-column:1 / -1;
  min-height:12rem;
}
.tool-card h2 {
  font-size:clamp(1.3rem,2vw,1.75rem);
}
.tool-icon {
  min-inline-size:2.55rem;
  block-size:2.55rem;
}
@media(max-width:850px){
  .tools-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tool-card,
  .tool-card:nth-last-child(2):nth-child(3n+1),
  .tool-card:last-child:nth-child(3n+2),
  .tool-card:last-child:nth-child(3n+1){grid-column:auto;min-height:13rem}
}
@media(max-width:640px){
  .tools-shell{padding:1.8rem 0 3rem}
  .tools-grid{grid-template-columns:1fr}
  .tool-card,
  .tool-card:nth-last-child(2):nth-child(3n+1),
  .tool-card:last-child:nth-child(3n+2),
  .tool-card:last-child:nth-child(3n+1){grid-column:1;min-height:11.5rem;padding:1.15rem}
  .tools-hero{margin-block-end:1.6rem}
  .tools-hero h1,.tool-heading h1{font-size:clamp(2.45rem,12vw,3.65rem)}
}

/* Design System V3 — first-party SVG tool icon language. */
.tool-icon {
  inline-size: 2.7rem;
  min-inline-size: 2.7rem;
  block-size: 2.7rem;
  padding: 0;
  border-color: color-mix(in srgb, var(--accent) 42%, var(--border-subtle));
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
}
.tool-icon__svg {
  inline-size: 1.35rem;
  block-size: 1.35rem;
  stroke-width: 1.7;
}
.tool-card__open,
.back-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}
.tool-card__arrow {
  inline-size: 1rem;
  block-size: 1rem;
  transition: transform var(--motion-fast) var(--ease-productive);
}
.tool-card__open:hover { color: var(--accent); }
.tool-card__open:hover .tool-card__arrow { transform: translateX(-2px); }
[dir="ltr"] .tool-card__open:hover .tool-card__arrow { transform: translateX(2px); }
.tool-controls textarea {
  font-family: var(--font-mono);
}


/* Public Surface Quality V2 — tools as task surfaces, not bordered grid cells. */
.tools-grid{
  gap:1rem;
  border:0;
  background:transparent;
}
.tool-card{
  border:1px solid var(--quality-surface-border);
  border-radius:var(--quality-radius-panel);
  background:var(--quality-surface-bg);
  box-shadow:var(--quality-surface-shadow);
  overflow:hidden;
}
.tool-card:hover{
  border-color:var(--quality-surface-border-strong);
  box-shadow:var(--quality-surface-shadow-hover);
  transform:translateY(-2px);
}
.tool-icon{
  border-color:var(--quality-icon-border);
  border-radius:var(--quality-radius-control);
  background:var(--quality-icon-bg);
  color:var(--accent);
  box-shadow:var(--shadow-1);
}
.tool-workspace{
  border:1px solid var(--quality-surface-border);
  border-radius:var(--quality-radius-panel);
  background:var(--quality-surface-bg);
  box-shadow:var(--quality-surface-shadow);
}
.tool-controls input,
.tool-controls textarea,
.tool-controls select{
  border-color:var(--quality-surface-border-strong);
  border-radius:var(--quality-radius-control);
  background:var(--surface-raised);
}
.tool-controls button{
  border-color:var(--accent);
  border-radius:var(--quality-radius-control);
  background:var(--accent);
  color:var(--editorial-active-text);
  box-shadow:var(--shadow-1);
}
.timestamp-output,
.text-stats{
  border-color:var(--quality-surface-border);
  border-radius:var(--quality-radius-control);
  background:var(--quality-surface-soft);
}

/* Public Surface Quality V2.1 — tool Web Component owns grid placement. */
.tools-grid > eg-tool-card{
  display:block;
  grid-column:span 2;
  min-inline-size:0;
}
.tools-grid > eg-tool-card > .tool-card{
  box-sizing:border-box;
  grid-column:auto;
  min-height:15rem;
  height:100%;
}
.tools-grid > eg-tool-card:nth-last-child(2):nth-child(3n+1),
.tools-grid > eg-tool-card:last-child:nth-child(3n+2){
  grid-column:span 3;
}
.tools-grid > eg-tool-card:last-child:nth-child(3n+1){
  grid-column:1 / -1;
}
@media(max-width:850px){
  .tools-grid > eg-tool-card,
  .tools-grid > eg-tool-card:nth-last-child(2):nth-child(3n+1),
  .tools-grid > eg-tool-card:last-child:nth-child(3n+2),
  .tools-grid > eg-tool-card:last-child:nth-child(3n+1){
    grid-column:auto;
  }
  .tools-grid > eg-tool-card > .tool-card{min-height:13rem}
}
@media(max-width:640px){
  .tools-grid > eg-tool-card{grid-column:1}
  .tools-grid > eg-tool-card > .tool-card{
    min-height:11.5rem;
    padding:1.15rem;
  }
}

/* Tool Lab V4 — grouped specialist tool catalog. */
.tool-categories{display:grid;gap:2.3rem}
.tool-category{display:grid;gap:.85rem}
.tool-category__head{
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:.7rem;
  align-items:end;
  padding-block-end:.65rem;
  border-block-end:1px solid var(--border-subtle);
}
.tool-category__head h2{margin:0;font-size:clamp(1.45rem,2.2vw,2rem);line-height:1.15}
.tool-category__head>span:last-child{color:var(--text-muted);font-size:.72rem;font-weight:900}
.tool-card--featured{
  border-color:color-mix(in srgb,var(--accent) 34%,var(--quality-surface-border));
  background:
    linear-gradient(145deg,color-mix(in srgb,var(--accent) 5%,transparent),transparent 52%),
    var(--quality-surface-bg);
}
.tool-card--featured .tool-icon{
  border-color:color-mix(in srgb,var(--accent) 54%,var(--quality-icon-border));
}
@media(max-width:640px){
  .tool-categories{gap:1.8rem}
  .tool-category__head{grid-template-columns:auto 1fr auto;align-items:center}
  .tool-category__head h2{font-size:1.3rem}
}