/* ===========================================================
   SPC — STANDARDS · "Built on standards & principle"
   Standalone home section after «درباره ما». Left: heading +
   numbered working principles. Right (sticky on desktop): the
   certificates as A4 sheets that open the shared lightbox.
   =========================================================== */
.stds{
  --grid:rgba(18,26,40,.05);
  position:relative;isolation:isolate;
  padding:clamp(96px,15vh,180px) 0 clamp(90px,13vh,160px);
  background-color:var(--paper);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:56px 56px;
  border-top:1px solid var(--line);
}
/* soften the drafting grid toward the edges */
.stds::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(110% 85% at 72% 42%,transparent 0%,var(--paper) 78%);}

.stds-grid{display:grid;grid-template-columns:minmax(0,.94fr) minmax(0,1.06fr);
  gap:clamp(44px,6.5vw,112px);align-items:start;}
.stds-side{display:flex;flex-direction:column;gap:clamp(44px,7vh,80px);}

/* ---- heading ---- */
.stds-kicker{display:inline-flex;align-items:center;gap:12px;font-family:var(--mono);font-size:12px;
  letter-spacing:.26em;text-transform:uppercase;color:var(--ink-soft);}
.stds-kicker i{display:block;width:34px;height:1px;background:var(--accent);}
.stds-title{margin-top:22px;font-size:clamp(29px,3.44vw,50px);font-weight:800;line-height:1.02;
  letter-spacing:-.025em;color:var(--ink);text-wrap:balance;}
.stds-intro{margin-top:24px;max-width:46ch;font-size:clamp(15px,1.1vw,17.5px);line-height:1.75;
  color:var(--ink-soft);text-wrap:pretty;}

/* ---- column sub-heading (label · count) ---- */
.stds-sub{display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding-bottom:14px;border-bottom:1px solid var(--ink);
  font-family:var(--mono);font-size:11px;font-weight:400;letter-spacing:.22em;text-transform:uppercase;color:var(--ink);}
.stds-sub b{font-weight:400;color:var(--ink-faint);letter-spacing:.08em;}

/* ---- principles ---- */
.stds-values{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:clamp(24px,3vw,44px);}
.stds-val{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr);column-gap:16px;
  padding:clamp(20px,2.8vh,28px) 0 clamp(22px,3vh,30px);border-bottom:1px solid var(--line);}
.stds-val::after{content:"";position:absolute;inset-inline-start:0;bottom:-1px;width:100%;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:var(--from,left);
  transition:transform .6s cubic-bezier(.16,1,.3,1);}
.stds-val:hover::after{transform:scaleX(1);}
.stds-val-no{grid-row:span 2;padding-top:5px;font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--accent);}
.stds-val h4{font-size:clamp(17px,1.35vw,21px);font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.stds-val p{margin-top:8px;font-size:clamp(13.5px,.95vw,15px);line-height:1.65;color:var(--ink-soft);text-wrap:pretty;}

/* ---- certificates ---- */
.stds-certs-wrap{position:sticky;top:clamp(88px,13vh,130px);}
.stds-certs{list-style:none;display:grid;grid-template-columns:repeat(var(--n,3),minmax(0,1fr));
  gap:clamp(14px,1.7vw,26px);margin-top:clamp(24px,3.4vh,36px);}
.stds-cert{appearance:none;display:flex;flex-direction:column;width:100%;padding:0;margin:0;border:0;
  background:none;font:inherit;color:inherit;text-align:start;cursor:zoom-in;border-radius:8px;}
.stds-cert:disabled{cursor:default;}
.stds-cert:focus-visible{outline:2px solid var(--accent);outline-offset:8px;}

/* an A4 sheet: full certificate visible, coloured top edge per standard */
.stds-paper{position:relative;display:block;aspect-ratio:210/297;overflow:hidden;border-radius:4px;
  background:#fff;border-top:4px solid var(--cc,var(--accent));
  box-shadow:0 1px 0 rgba(16,20,26,.06),0 2px 6px -2px rgba(16,20,26,.12),0 22px 44px -26px rgba(16,20,26,.42);
  transition:transform .6s cubic-bezier(.16,1,.3,1),box-shadow .6s cubic-bezier(.16,1,.3,1);}
.stds-paper img{width:100%;height:100%;object-fit:cover;object-position:top center;display:block;
  transition:transform .9s cubic-bezier(.16,1,.3,1);}
.stds-paper-empty{position:absolute;inset:0;display:grid;place-items:center;padding:16px;text-align:center;
  font-family:var(--mono);font-size:11px;color:var(--ink-faint);}
.stds-zoom{position:absolute;inset-inline-end:10px;bottom:10px;display:grid;place-items:center;
  width:38px;height:38px;border-radius:50%;background:rgba(16,20,26,.8);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  opacity:0;transform:translateY(6px) scale(.92);transition:opacity .35s ease,transform .45s cubic-bezier(.16,1,.3,1);}
.stds-zoom svg{fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;}

.stds-cert-meta{display:flex;flex-direction:column;gap:5px;margin-top:16px;}
.stds-cert-std{display:flex;align-items:center;gap:8px;font-size:clamp(14px,1.1vw,17px);font-weight:800;
  letter-spacing:-.01em;color:var(--ink);}
.stds-cert-std::before{content:"";flex:none;width:7px;height:7px;border-radius:50%;background:var(--cc,var(--accent));}
.stds-cert-scope{font-family:var(--mono);font-size:11px;letter-spacing:.03em;line-height:1.5;color:var(--ink-soft);}
.stds-cert-view{display:inline-flex;align-items:center;gap:6px;margin-top:8px;
  font-size:12.5px;font-weight:600;color:var(--accent);}
.stds-cert-view i{font-style:normal;transition:transform .35s cubic-bezier(.16,1,.3,1);}
.stds-cert:disabled .stds-cert-view{display:none;}

@media (hover:hover){
  .stds-cert:not(:disabled):hover .stds-paper{transform:translateY(-8px);
    box-shadow:0 1px 0 rgba(16,20,26,.06),0 4px 10px -4px rgba(16,20,26,.16),0 34px 60px -28px rgba(16,20,26,.5);}
  .stds-cert:not(:disabled):hover .stds-paper img{transform:scale(1.035);}
  .stds-cert:not(:disabled):hover .stds-zoom{opacity:1;transform:none;}
  .stds-cert:not(:disabled):hover .stds-cert-view i{transform:translate(2px,-2px);}
}
.stds-cert:focus-visible .stds-zoom{opacity:1;transform:none;}

/* ---- scroll reveal (armed by SectionsReveal via data-cs → .cs-pre) ---- */
.stds-rv{transition:opacity .8s ease var(--d,0ms),transform .95s cubic-bezier(.16,1,.3,1) var(--d,0ms);}
.stds.cs-pre .stds-rv{opacity:0;transform:translateY(26px);}

/* ---- tablet: one column — heading, certificates, then principles ---- */
@media (max-width:1080px){
  .stds-grid{grid-template-columns:minmax(0,1fr);gap:clamp(40px,7vh,64px);}
  .stds-side{display:contents;}
  .stds-head{order:1;}
  .stds-certs-wrap{order:2;position:static;}
  .stds-values-wrap{order:3;}
  .stds-certs{max-width:820px;}
}
/* ---- phone: swipeable sheets, single-column principles ---- */
@media (max-width:640px){
  .stds{padding:clamp(72px,11vh,100px) 0;}
  .stds-certs{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;
    margin-inline:calc(var(--pad) * -1);padding:0 var(--pad) 18px;scroll-padding-inline:var(--pad);}
  .stds-certs::-webkit-scrollbar{display:none;}
  .stds-certs li{flex:0 0 64%;scroll-snap-align:start;}
  .stds-values{grid-template-columns:minmax(0,1fr);}
}
@media (prefers-reduced-motion:reduce){
  .stds.cs-pre .stds-rv{opacity:1;transform:none;}
  .stds-rv,.stds-paper,.stds-paper img,.stds-val::after{transition:none;}
}

/* ---- RTL / Persian ---- */
html[dir="rtl"] .stds-val{--from:right;}
html[dir="rtl"] .stds-title{font-family:var(--morabba);font-weight:500;line-height:1.22;font-size:clamp(26px,2.96vw,43px);}
html[dir="rtl"] .stds-sub{font-family:var(--mono);font-weight:500;font-size:12.5px;}
html[dir="rtl"] .stds-cert-std{font-family:var(--sans);}
html[dir="rtl"] .stds-cert-view i{transform:scaleX(-1);}
@media (hover:hover){
  html[dir="rtl"] .stds-cert:not(:disabled):hover .stds-cert-view i{transform:scaleX(-1) translate(2px,-2px);}
}

/* ---- tidy, aligned cards: equal-height columns, one-line names,
        two-line scope slot, the "view" link pinned to the same baseline ---- */
.stds-certs > li{display:flex;}
.stds-cert{height:100%;}
.stds-cert-meta{flex:1;display:grid;grid-template-rows:auto auto 1fr;row-gap:6px;margin-top:18px;}
.stds-cert-std{min-width:0;font-size:clamp(13px,1vw,16px);white-space:nowrap;}
.stds-cert-std bdi{min-width:0;overflow:hidden;text-overflow:ellipsis;}
.stds-cert-scope{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:calc(2 * 1.5em);}
.stds-cert-view{align-self:end;margin-top:6px;}