/* =====================================================================
   Invovia — Stack Reference (Elementor widget)
   All rules are scoped under .isr-stack to avoid theme conflicts.
   ===================================================================== */
.isr-stack{
  --isr-white:#FFFFFF;
  --isr-slate:#8B95A8;
  --isr-accent:#4378FF;
  --isr-line:rgba(255,255,255,.08);
  --isr-line2:rgba(255,255,255,.14);
  --isr-mono:'JetBrains Mono',ui-monospace,monospace;
  --isr-disp:'Space Grotesk',sans-serif;
  --isr-body:'Inter',sans-serif;
  position:relative;
  background:#0F1525;
  color:var(--isr-white);
  font-family:var(--isr-body);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
.isr-stack *,
.isr-stack *::before,
.isr-stack *::after{box-sizing:border-box}
.isr-wrap{max-width:1180px;margin:0 auto}
.isr-stack a{color:inherit;text-decoration:none}
.isr-stack :focus-visible{outline:2px solid var(--isr-accent);outline-offset:3px;border-radius:3px}

/* header */
.isr-head{max-width:720px;margin-bottom:2.4rem}
.isr-eyebrow{font-family:var(--isr-mono);font-size:.72rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--isr-accent);margin-bottom:.9rem}
.isr-title{font-family:var(--isr-disp);font-size:clamp(1.8rem,3.2vw,2.8rem);font-weight:700;line-height:1.12;letter-spacing:-.025em;color:var(--isr-white);margin:0 0 1.1rem}
.isr-title .isr-hl{color:var(--isr-accent)}
.isr-lead{font-size:1.02rem;line-height:1.78;color:var(--isr-slate);margin:0}

/* meta bar + legend */
.isr-metabar{border-top:1px solid var(--isr-line);padding-top:2rem;margin-bottom:2.6rem;display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:1rem}
.isr-metalbl{font-family:var(--isr-mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--isr-slate)}
.isr-legend{display:flex;gap:1.3rem;font-family:var(--isr-mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--isr-slate);flex-wrap:wrap}
.isr-legend span{display:inline-flex;align-items:center}
.isr-legend i{width:9px;height:9px;border-radius:2px;display:inline-block;margin-right:.45rem}

/* body layout */
.isr-body{display:grid;gap:3.5rem;align-items:start}
.isr-body.has-map{grid-template-columns:216px 1fr}
.isr-body.no-map{grid-template-columns:1fr}

/* sticky stack map */
.isr-map{position:sticky;top:96px;font-family:var(--isr-mono)}
.isr-map-title{font-size:.6rem;letter-spacing:.18em;text-transform:uppercase;color:var(--isr-slate);margin-bottom:1.1rem;padding-left:.1rem}
.isr-tiergroup{margin-bottom:1.3rem}
.isr-tiername{font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;font-weight:700;margin-bottom:.55rem;display:flex;align-items:center;gap:.5rem;color:var(--isr-white)}
.isr-tiername .isr-dot{width:8px;height:8px;border-radius:2px;flex-shrink:0}
.isr-maplink{display:flex;gap:.6rem;align-items:center;padding:.32rem .1rem .32rem 1.15rem;font-size:.72rem;color:var(--isr-slate);position:relative;transition:color .2s;line-height:1.3;border-left:1px solid var(--isr-line);margin-left:3px}
.isr-maplink .isr-code{font-size:.6rem;color:rgba(255,255,255,.3);flex-shrink:0;width:16px}
.isr-maplink:hover{color:var(--isr-white)}
.isr-maplink.is-active{color:var(--isr-white)}
.isr-maplink.is-active::before{content:'';position:absolute;left:-1px;top:0;bottom:0;width:2px;background:var(--tier,var(--isr-accent))}
.isr-maplink.is-active .isr-code{color:var(--tier,var(--isr-accent))}
.isr-mapfoot{margin-top:1.6rem;padding-top:1.1rem;border-top:1px solid var(--isr-line);font-size:.62rem;line-height:1.6;color:var(--isr-slate)}
.isr-mapfoot .isr-live{display:inline-flex;align-items:center;gap:.4rem;color:#22C55E;font-weight:600;letter-spacing:.05em}
.isr-mapfoot .isr-live i{width:7px;height:7px;border-radius:50%;background:#22C55E;box-shadow:0 0 0 0 rgba(34,197,94,.5);animation:isr-beat 2.4s ease-out infinite}
@keyframes isr-beat{0%{box-shadow:0 0 0 0 rgba(34,197,94,.5)}70%{box-shadow:0 0 0 7px rgba(34,197,94,0)}100%{box-shadow:0 0 0 0 rgba(34,197,94,0)}}

/* strata */
.isr-strata{display:flex;flex-direction:column;min-width:0}
.isr-band{padding:.2rem 0}
.isr-bandhead{display:flex;align-items:center;gap:1rem;margin:2.6rem 0 .4rem;font-family:var(--isr-mono)}
.isr-band:first-child .isr-bandhead{margin-top:0}
.isr-bandhead .isr-tcode{font-size:.7rem;font-weight:700;letter-spacing:.06em;color:var(--tier)}
.isr-bandhead .isr-tname{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--isr-white);font-weight:600}
.isr-bandhead .isr-trule{flex:1;height:1px;background:linear-gradient(90deg,var(--tier),transparent)}

.isr-stratum{position:relative;display:grid;grid-template-columns:64px 1fr;gap:1.4rem;padding:2rem 0;border-bottom:1px solid var(--isr-line);scroll-margin-top:92px}
.isr-stratum:last-child{border-bottom:none}
.isr-index{font-family:var(--isr-mono);font-weight:700;font-size:1.45rem;color:var(--tier);line-height:1;letter-spacing:-.02em;position:relative}
.isr-index::after{content:attr(data-tier);display:block;font-size:.54rem;letter-spacing:.14em;color:var(--isr-slate);margin-top:.5rem;font-weight:500}
.isr-spine{position:absolute;left:31px;top:3.7rem;bottom:-2rem;width:1px;background:var(--isr-line)}
.isr-stratum:last-child .isr-spine{display:none}
.isr-node{position:absolute;left:26.5px;top:3.15rem;width:11px;height:11px;border-radius:50%;border:2px solid var(--tier);background:#0F1525;transition:box-shadow .3s,background .3s}
.isr-stratum:hover .isr-node{background:var(--tier);box-shadow:0 0 0 5px color-mix(in srgb,var(--tier) 22%,transparent)}

.isr-main{min-width:0}
.isr-top{display:flex;align-items:flex-start;gap:1rem;margin-bottom:.7rem}
.isr-glyph{width:46px;height:46px;border-radius:10px;flex-shrink:0;display:grid;place-items:center;border:1px solid var(--isr-line2);background:rgba(255,255,255,.03);color:var(--tier);transition:border-color .3s,transform .3s}
.isr-stratum:hover .isr-glyph{border-color:var(--tier);transform:translateY(-2px)}
.isr-glyph svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.isr-sttitle{font-family:var(--isr-disp);font-size:1.28rem;font-weight:600;color:var(--isr-white);line-height:1.25;letter-spacing:-.01em;padding-top:.35rem;margin:0}
.isr-desc{font-size:.94rem;color:var(--isr-slate);line-height:1.72;max-width:640px;margin:0}

/* tags */
.isr-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.15rem}
.isr-tag{font-family:var(--isr-mono);font-size:.72rem;font-weight:500;color:var(--isr-white);background:rgba(255,255,255,.03);border:1px solid var(--isr-line);border-radius:5px;padding:.32rem .7rem .32rem 1.15rem;letter-spacing:.01em;position:relative;transition:border-color .2s,color .2s,background .2s}
.isr-tag::before{content:'';position:absolute;left:.55rem;top:50%;transform:translateY(-50%);width:4px;height:4px;border-radius:1px;background:var(--tier);opacity:.7}
.isr-tag:hover{border-color:var(--tier);color:var(--isr-white);background:color-mix(in srgb,var(--tier) 10%,transparent)}

/* callout */
.isr-callout{margin-top:2.5rem;border:1px solid var(--isr-line2);border-radius:12px;background:rgba(27,92,255,.05);padding:1.6rem 1.9rem}
.isr-callout p{margin:0;font-size:.96rem;color:var(--isr-white);line-height:1.7}

/* reveal (progressive enhancement; visible by default without JS) */
.isr-stack.js-on .isr-reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.isr-stack.js-on .isr-reveal.is-in{opacity:1;transform:none}

/* responsive */
@media(max-width:900px){
  .isr-body.has-map{grid-template-columns:1fr;gap:1.5rem}
  .isr-map{position:relative;top:0;display:flex;gap:1rem;overflow-x:auto;padding-bottom:.6rem;border-bottom:1px solid var(--isr-line)}
  .isr-map-title,.isr-mapfoot{display:none}
  .isr-tiergroup{margin-bottom:0;flex-shrink:0}
  .isr-tiername{margin-bottom:.4rem}
  .isr-maplink{border-left:none;padding-left:.2rem;white-space:nowrap}
  .isr-maplink.is-active::before{display:none}
  .isr-metabar{align-items:flex-start}
}
@media(max-width:640px){
  .isr-stratum{grid-template-columns:1fr;gap:.9rem}
  .isr-index{display:flex;align-items:baseline;gap:.7rem}
  .isr-index::after{margin-top:0}
  .isr-spine,.isr-node{display:none}
}
@media(prefers-reduced-motion:reduce){
  .isr-stack *{animation:none!important;scroll-behavior:auto!important}
  .isr-stack.js-on .isr-reveal{opacity:1;transform:none;transition:none}
}